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10162 lines
369 KiB
10162 lines
369 KiB
/*
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* Copyright (c) 1995, 2015, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.awt;
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import java.io.PrintStream;
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import java.io.PrintWriter;
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import java.util.Objects;
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import java.util.Vector;
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import java.util.Locale;
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import java.util.EventListener;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import java.util.Collections;
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import java.awt.peer.ComponentPeer;
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import java.awt.peer.ContainerPeer;
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import java.awt.peer.LightweightPeer;
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import java.awt.image.BufferStrategy;
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import java.awt.image.ImageObserver;
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import java.awt.image.ImageProducer;
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import java.awt.image.ColorModel;
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import java.awt.image.VolatileImage;
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import java.awt.event.*;
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import java.io.Serializable;
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import java.io.ObjectOutputStream;
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import java.io.ObjectInputStream;
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import java.io.IOException;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeSupport;
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import java.beans.Transient;
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import java.awt.im.InputContext;
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import java.awt.im.InputMethodRequests;
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import java.awt.dnd.DropTarget;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.AccessControlContext;
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import javax.accessibility.*;
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import java.applet.Applet;
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import sun.security.action.GetPropertyAction;
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import sun.awt.AppContext;
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import sun.awt.AWTAccessor;
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import sun.awt.ConstrainableGraphics;
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import sun.awt.SubRegionShowable;
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import sun.awt.SunToolkit;
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import sun.awt.WindowClosingListener;
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import sun.awt.CausedFocusEvent;
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import sun.awt.EmbeddedFrame;
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import sun.awt.dnd.SunDropTargetEvent;
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import sun.awt.im.CompositionArea;
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import sun.font.FontManager;
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import sun.font.FontManagerFactory;
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import sun.font.SunFontManager;
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import sun.java2d.SunGraphics2D;
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import sun.java2d.pipe.Region;
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import sun.awt.image.VSyncedBSManager;
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import sun.java2d.pipe.hw.ExtendedBufferCapabilities;
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import static sun.java2d.pipe.hw.ExtendedBufferCapabilities.VSyncType.*;
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import sun.awt.RequestFocusController;
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import sun.java2d.SunGraphicsEnvironment;
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import sun.util.logging.PlatformLogger;
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/**
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* A <em>component</em> is an object having a graphical representation
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* that can be displayed on the screen and that can interact with the
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* user. Examples of components are the buttons, checkboxes, and scrollbars
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* of a typical graphical user interface. <p>
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* The <code>Component</code> class is the abstract superclass of
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* the nonmenu-related Abstract Window Toolkit components. Class
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* <code>Component</code> can also be extended directly to create a
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* lightweight component. A lightweight component is a component that is
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* not associated with a native window. On the contrary, a heavyweight
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* component is associated with a native window. The {@link #isLightweight()}
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* method may be used to distinguish between the two kinds of the components.
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* <p>
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* Lightweight and heavyweight components may be mixed in a single component
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* hierarchy. However, for correct operating of such a mixed hierarchy of
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* components, the whole hierarchy must be valid. When the hierarchy gets
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* invalidated, like after changing the bounds of components, or
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* adding/removing components to/from containers, the whole hierarchy must be
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* validated afterwards by means of the {@link Container#validate()} method
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* invoked on the top-most invalid container of the hierarchy.
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*
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* <h3>Serialization</h3>
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* It is important to note that only AWT listeners which conform
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* to the <code>Serializable</code> protocol will be saved when
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* the object is stored. If an AWT object has listeners that
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* aren't marked serializable, they will be dropped at
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* <code>writeObject</code> time. Developers will need, as always,
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* to consider the implications of making an object serializable.
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* One situation to watch out for is this:
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* <pre>
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* import java.awt.*;
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* import java.awt.event.*;
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* import java.io.Serializable;
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*
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* class MyApp implements ActionListener, Serializable
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* {
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* BigObjectThatShouldNotBeSerializedWithAButton bigOne;
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* Button aButton = new Button();
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*
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* MyApp()
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* {
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* // Oops, now aButton has a listener with a reference
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* // to bigOne!
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* aButton.addActionListener(this);
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* }
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*
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* public void actionPerformed(ActionEvent e)
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* {
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* System.out.println("Hello There");
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* }
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* }
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* </pre>
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* In this example, serializing <code>aButton</code> by itself
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* will cause <code>MyApp</code> and everything it refers to
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* to be serialized as well. The problem is that the listener
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* is serializable by coincidence, not by design. To separate
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* the decisions about <code>MyApp</code> and the
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* <code>ActionListener</code> being serializable one can use a
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* nested class, as in the following example:
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* <pre>
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* import java.awt.*;
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* import java.awt.event.*;
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* import java.io.Serializable;
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*
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* class MyApp implements java.io.Serializable
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* {
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* BigObjectThatShouldNotBeSerializedWithAButton bigOne;
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* Button aButton = new Button();
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*
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* static class MyActionListener implements ActionListener
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* {
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* public void actionPerformed(ActionEvent e)
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* {
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* System.out.println("Hello There");
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* }
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* }
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*
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* MyApp()
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* {
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* aButton.addActionListener(new MyActionListener());
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* }
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* }
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* </pre>
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* <p>
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* <b>Note</b>: For more information on the paint mechanisms utilitized
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* by AWT and Swing, including information on how to write the most
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* efficient painting code, see
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* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
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* <p>
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* For details on the focus subsystem, see
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* <a href="https://docs.oracle.com/javase/tutorial/uiswing/misc/focus.html">
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* How to Use the Focus Subsystem</a>,
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* a section in <em>The Java Tutorial</em>, and the
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* <a href="../../java/awt/doc-files/FocusSpec.html">Focus Specification</a>
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* for more information.
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*
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* @author Arthur van Hoff
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* @author Sami Shaio
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*/
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public abstract class Component implements ImageObserver, MenuContainer,
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Serializable
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{
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private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Component");
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private static final PlatformLogger eventLog = PlatformLogger.getLogger("java.awt.event.Component");
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private static final PlatformLogger focusLog = PlatformLogger.getLogger("java.awt.focus.Component");
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private static final PlatformLogger mixingLog = PlatformLogger.getLogger("java.awt.mixing.Component");
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/**
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* The peer of the component. The peer implements the component's
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* behavior. The peer is set when the <code>Component</code> is
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* added to a container that also is a peer.
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* @see #addNotify
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* @see #removeNotify
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*/
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transient ComponentPeer peer;
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/**
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* The parent of the object. It may be <code>null</code>
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* for top-level components.
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* @see #getParent
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*/
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transient Container parent;
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/**
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* The <code>AppContext</code> of the component. Applets/Plugin may
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* change the AppContext.
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*/
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transient AppContext appContext;
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/**
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* The x position of the component in the parent's coordinate system.
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*
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* @serial
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* @see #getLocation
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*/
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int x;
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/**
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* The y position of the component in the parent's coordinate system.
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*
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* @serial
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* @see #getLocation
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*/
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int y;
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/**
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* The width of the component.
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*
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* @serial
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* @see #getSize
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*/
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int width;
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/**
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* The height of the component.
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*
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* @serial
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* @see #getSize
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*/
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int height;
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/**
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* The foreground color for this component.
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* <code>foreground</code> can be <code>null</code>.
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*
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* @serial
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* @see #getForeground
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* @see #setForeground
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*/
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Color foreground;
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/**
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* The background color for this component.
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* <code>background</code> can be <code>null</code>.
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*
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* @serial
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* @see #getBackground
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* @see #setBackground
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*/
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Color background;
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/**
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* The font used by this component.
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* The <code>font</code> can be <code>null</code>.
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*
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* @serial
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* @see #getFont
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* @see #setFont
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*/
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volatile Font font;
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/**
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* The font which the peer is currently using.
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* (<code>null</code> if no peer exists.)
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*/
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Font peerFont;
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/**
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* The cursor displayed when pointer is over this component.
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* This value can be <code>null</code>.
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*
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* @serial
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* @see #getCursor
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* @see #setCursor
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*/
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Cursor cursor;
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/**
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* The locale for the component.
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*
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* @serial
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* @see #getLocale
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* @see #setLocale
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*/
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Locale locale;
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/**
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* A reference to a <code>GraphicsConfiguration</code> object
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* used to describe the characteristics of a graphics
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* destination.
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* This value can be <code>null</code>.
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*
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* @since 1.3
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* @serial
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* @see GraphicsConfiguration
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* @see #getGraphicsConfiguration
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*/
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private transient volatile GraphicsConfiguration graphicsConfig;
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/**
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* A reference to a <code>BufferStrategy</code> object
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* used to manipulate the buffers on this component.
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*
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* @since 1.4
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* @see java.awt.image.BufferStrategy
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* @see #getBufferStrategy()
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*/
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transient BufferStrategy bufferStrategy = null;
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/**
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* True when the object should ignore all repaint events.
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*
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* @since 1.4
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* @serial
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* @see #setIgnoreRepaint
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* @see #getIgnoreRepaint
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*/
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boolean ignoreRepaint = false;
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/**
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* True when the object is visible. An object that is not
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* visible is not drawn on the screen.
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*
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* @serial
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* @see #isVisible
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* @see #setVisible
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*/
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boolean visible = true;
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/**
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* True when the object is enabled. An object that is not
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* enabled does not interact with the user.
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*
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* @serial
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* @see #isEnabled
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* @see #setEnabled
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*/
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boolean enabled = true;
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/**
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* True when the object is valid. An invalid object needs to
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* be layed out. This flag is set to false when the object
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* size is changed.
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*
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* @serial
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* @see #isValid
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* @see #validate
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* @see #invalidate
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*/
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private volatile boolean valid = false;
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/**
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* The <code>DropTarget</code> associated with this component.
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*
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* @since 1.2
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* @serial
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* @see #setDropTarget
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* @see #getDropTarget
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*/
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DropTarget dropTarget;
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/**
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* @serial
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* @see #add
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*/
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Vector<PopupMenu> popups;
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/**
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* A component's name.
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* This field can be <code>null</code>.
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*
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* @serial
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* @see #getName
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* @see #setName(String)
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*/
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private String name;
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/**
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* A bool to determine whether the name has
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* been set explicitly. <code>nameExplicitlySet</code> will
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* be false if the name has not been set and
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* true if it has.
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*
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* @serial
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* @see #getName
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* @see #setName(String)
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*/
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private boolean nameExplicitlySet = false;
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/**
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* Indicates whether this Component can be focused.
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*
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* @serial
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* @see #setFocusable
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* @see #isFocusable
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* @since 1.4
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*/
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private boolean focusable = true;
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private static final int FOCUS_TRAVERSABLE_UNKNOWN = 0;
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private static final int FOCUS_TRAVERSABLE_DEFAULT = 1;
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private static final int FOCUS_TRAVERSABLE_SET = 2;
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/**
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* Tracks whether this Component is relying on default focus travesability.
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*
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* @serial
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* @since 1.4
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*/
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private int isFocusTraversableOverridden = FOCUS_TRAVERSABLE_UNKNOWN;
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/**
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* The focus traversal keys. These keys will generate focus traversal
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* behavior for Components for which focus traversal keys are enabled. If a
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* value of null is specified for a traversal key, this Component inherits
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* that traversal key from its parent. If all ancestors of this Component
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* have null specified for that traversal key, then the current
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* KeyboardFocusManager's default traversal key is used.
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*
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* @serial
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* @see #setFocusTraversalKeys
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* @see #getFocusTraversalKeys
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* @since 1.4
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*/
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Set<AWTKeyStroke>[] focusTraversalKeys;
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private static final String[] focusTraversalKeyPropertyNames = {
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"forwardFocusTraversalKeys",
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"backwardFocusTraversalKeys",
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"upCycleFocusTraversalKeys",
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"downCycleFocusTraversalKeys"
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};
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/**
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* Indicates whether focus traversal keys are enabled for this Component.
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* Components for which focus traversal keys are disabled receive key
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* events for focus traversal keys. Components for which focus traversal
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* keys are enabled do not see these events; instead, the events are
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* automatically converted to traversal operations.
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*
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* @serial
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* @see #setFocusTraversalKeysEnabled
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* @see #getFocusTraversalKeysEnabled
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* @since 1.4
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*/
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private boolean focusTraversalKeysEnabled = true;
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/**
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* The locking object for AWT component-tree and layout operations.
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*
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* @see #getTreeLock
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*/
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static final Object LOCK = new AWTTreeLock();
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static class AWTTreeLock {}
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/*
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* The component's AccessControlContext.
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*/
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private transient volatile AccessControlContext acc =
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AccessController.getContext();
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/**
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* Minimum size.
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* (This field perhaps should have been transient).
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*
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* @serial
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*/
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Dimension minSize;
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/**
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* Whether or not setMinimumSize has been invoked with a non-null value.
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*/
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boolean minSizeSet;
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/**
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* Preferred size.
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* (This field perhaps should have been transient).
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*
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* @serial
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*/
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Dimension prefSize;
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/**
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* Whether or not setPreferredSize has been invoked with a non-null value.
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*/
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boolean prefSizeSet;
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/**
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* Maximum size
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*
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* @serial
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*/
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Dimension maxSize;
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|
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/**
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* Whether or not setMaximumSize has been invoked with a non-null value.
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*/
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boolean maxSizeSet;
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/**
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* The orientation for this component.
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* @see #getComponentOrientation
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* @see #setComponentOrientation
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*/
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transient ComponentOrientation componentOrientation
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= ComponentOrientation.UNKNOWN;
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|
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/**
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* <code>newEventsOnly</code> will be true if the event is
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* one of the event types enabled for the component.
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* It will then allow for normal processing to
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* continue. If it is false the event is passed
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* to the component's parent and up the ancestor
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* tree until the event has been consumed.
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*
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* @serial
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* @see #dispatchEvent
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*/
|
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boolean newEventsOnly = false;
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transient ComponentListener componentListener;
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transient FocusListener focusListener;
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transient HierarchyListener hierarchyListener;
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transient HierarchyBoundsListener hierarchyBoundsListener;
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transient KeyListener keyListener;
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transient MouseListener mouseListener;
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transient MouseMotionListener mouseMotionListener;
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transient MouseWheelListener mouseWheelListener;
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transient InputMethodListener inputMethodListener;
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transient RuntimeException windowClosingException = null;
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|
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/** Internal, constants for serialization */
|
|
final static String actionListenerK = "actionL";
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final static String adjustmentListenerK = "adjustmentL";
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final static String componentListenerK = "componentL";
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final static String containerListenerK = "containerL";
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final static String focusListenerK = "focusL";
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final static String itemListenerK = "itemL";
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final static String keyListenerK = "keyL";
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final static String mouseListenerK = "mouseL";
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final static String mouseMotionListenerK = "mouseMotionL";
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final static String mouseWheelListenerK = "mouseWheelL";
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final static String textListenerK = "textL";
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final static String ownedWindowK = "ownedL";
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final static String windowListenerK = "windowL";
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|
final static String inputMethodListenerK = "inputMethodL";
|
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final static String hierarchyListenerK = "hierarchyL";
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final static String hierarchyBoundsListenerK = "hierarchyBoundsL";
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|
final static String windowStateListenerK = "windowStateL";
|
|
final static String windowFocusListenerK = "windowFocusL";
|
|
|
|
/**
|
|
* The <code>eventMask</code> is ONLY set by subclasses via
|
|
* <code>enableEvents</code>.
|
|
* The mask should NOT be set when listeners are registered
|
|
* so that we can distinguish the difference between when
|
|
* listeners request events and subclasses request them.
|
|
* One bit is used to indicate whether input methods are
|
|
* enabled; this bit is set by <code>enableInputMethods</code> and is
|
|
* on by default.
|
|
*
|
|
* @serial
|
|
* @see #enableInputMethods
|
|
* @see AWTEvent
|
|
*/
|
|
long eventMask = AWTEvent.INPUT_METHODS_ENABLED_MASK;
|
|
|
|
/**
|
|
* Static properties for incremental drawing.
|
|
* @see #imageUpdate
|
|
*/
|
|
static boolean isInc;
|
|
static int incRate;
|
|
static {
|
|
/* ensure that the necessary native libraries are loaded */
|
|
Toolkit.loadLibraries();
|
|
/* initialize JNI field and method ids */
|
|
if (!GraphicsEnvironment.isHeadless()) {
|
|
initIDs();
|
|
}
|
|
|
|
String s = java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("awt.image.incrementaldraw"));
|
|
isInc = (s == null || s.equals("true"));
|
|
|
|
s = java.security.AccessController.doPrivileged(
|
|
new GetPropertyAction("awt.image.redrawrate"));
|
|
incRate = (s != null) ? Integer.parseInt(s) : 100;
|
|
}
|
|
|
|
/**
|
|
* Ease-of-use constant for <code>getAlignmentY()</code>.
|
|
* Specifies an alignment to the top of the component.
|
|
* @see #getAlignmentY
|
|
*/
|
|
public static final float TOP_ALIGNMENT = 0.0f;
|
|
|
|
/**
|
|
* Ease-of-use constant for <code>getAlignmentY</code> and
|
|
* <code>getAlignmentX</code>. Specifies an alignment to
|
|
* the center of the component
|
|
* @see #getAlignmentX
|
|
* @see #getAlignmentY
|
|
*/
|
|
public static final float CENTER_ALIGNMENT = 0.5f;
|
|
|
|
/**
|
|
* Ease-of-use constant for <code>getAlignmentY</code>.
|
|
* Specifies an alignment to the bottom of the component.
|
|
* @see #getAlignmentY
|
|
*/
|
|
public static final float BOTTOM_ALIGNMENT = 1.0f;
|
|
|
|
/**
|
|
* Ease-of-use constant for <code>getAlignmentX</code>.
|
|
* Specifies an alignment to the left side of the component.
|
|
* @see #getAlignmentX
|
|
*/
|
|
public static final float LEFT_ALIGNMENT = 0.0f;
|
|
|
|
/**
|
|
* Ease-of-use constant for <code>getAlignmentX</code>.
|
|
* Specifies an alignment to the right side of the component.
|
|
* @see #getAlignmentX
|
|
*/
|
|
public static final float RIGHT_ALIGNMENT = 1.0f;
|
|
|
|
/*
|
|
* JDK 1.1 serialVersionUID
|
|
*/
|
|
private static final long serialVersionUID = -7644114512714619750L;
|
|
|
|
/**
|
|
* If any <code>PropertyChangeListeners</code> have been registered,
|
|
* the <code>changeSupport</code> field describes them.
|
|
*
|
|
* @serial
|
|
* @since 1.2
|
|
* @see #addPropertyChangeListener
|
|
* @see #removePropertyChangeListener
|
|
* @see #firePropertyChange
|
|
*/
|
|
private PropertyChangeSupport changeSupport;
|
|
|
|
/*
|
|
* In some cases using "this" as an object to synchronize by
|
|
* can lead to a deadlock if client code also uses synchronization
|
|
* by a component object. For every such situation revealed we should
|
|
* consider possibility of replacing "this" with the package private
|
|
* objectLock object introduced below. So far there're 3 issues known:
|
|
* - CR 6708322 (the getName/setName methods);
|
|
* - CR 6608764 (the PropertyChangeListener machinery);
|
|
* - CR 7108598 (the Container.paint/KeyboardFocusManager.clearMostRecentFocusOwner methods).
|
|
*
|
|
* Note: this field is considered final, though readObject() prohibits
|
|
* initializing final fields.
|
|
*/
|
|
private transient Object objectLock = new Object();
|
|
Object getObjectLock() {
|
|
return objectLock;
|
|
}
|
|
|
|
/*
|
|
* Returns the acc this component was constructed with.
|
|
*/
|
|
final AccessControlContext getAccessControlContext() {
|
|
if (acc == null) {
|
|
throw new SecurityException("Component is missing AccessControlContext");
|
|
}
|
|
return acc;
|
|
}
|
|
|
|
boolean isPacked = false;
|
|
|
|
/**
|
|
* Pseudoparameter for direct Geometry API (setLocation, setBounds setSize
|
|
* to signal setBounds what's changing. Should be used under TreeLock.
|
|
* This is only needed due to the inability to change the cross-calling
|
|
* order of public and deprecated methods.
|
|
*/
|
|
private int boundsOp = ComponentPeer.DEFAULT_OPERATION;
|
|
|
|
/**
|
|
* Enumeration of the common ways the baseline of a component can
|
|
* change as the size changes. The baseline resize behavior is
|
|
* primarily for layout managers that need to know how the
|
|
* position of the baseline changes as the component size changes.
|
|
* In general the baseline resize behavior will be valid for sizes
|
|
* greater than or equal to the minimum size (the actual minimum
|
|
* size; not a developer specified minimum size). For sizes
|
|
* smaller than the minimum size the baseline may change in a way
|
|
* other than the baseline resize behavior indicates. Similarly,
|
|
* as the size approaches <code>Integer.MAX_VALUE</code> and/or
|
|
* <code>Short.MAX_VALUE</code> the baseline may change in a way
|
|
* other than the baseline resize behavior indicates.
|
|
*
|
|
* @see #getBaselineResizeBehavior
|
|
* @see #getBaseline(int,int)
|
|
* @since 1.6
|
|
*/
|
|
public enum BaselineResizeBehavior {
|
|
/**
|
|
* Indicates the baseline remains fixed relative to the
|
|
* y-origin. That is, <code>getBaseline</code> returns
|
|
* the same value regardless of the height or width. For example, a
|
|
* <code>JLabel</code> containing non-empty text with a
|
|
* vertical alignment of <code>TOP</code> should have a
|
|
* baseline type of <code>CONSTANT_ASCENT</code>.
|
|
*/
|
|
CONSTANT_ASCENT,
|
|
|
|
/**
|
|
* Indicates the baseline remains fixed relative to the height
|
|
* and does not change as the width is varied. That is, for
|
|
* any height H the difference between H and
|
|
* <code>getBaseline(w, H)</code> is the same. For example, a
|
|
* <code>JLabel</code> containing non-empty text with a
|
|
* vertical alignment of <code>BOTTOM</code> should have a
|
|
* baseline type of <code>CONSTANT_DESCENT</code>.
|
|
*/
|
|
CONSTANT_DESCENT,
|
|
|
|
/**
|
|
* Indicates the baseline remains a fixed distance from
|
|
* the center of the component. That is, for any height H the
|
|
* difference between <code>getBaseline(w, H)</code> and
|
|
* <code>H / 2</code> is the same (plus or minus one depending upon
|
|
* rounding error).
|
|
* <p>
|
|
* Because of possible rounding errors it is recommended
|
|
* you ask for the baseline with two consecutive heights and use
|
|
* the return value to determine if you need to pad calculations
|
|
* by 1. The following shows how to calculate the baseline for
|
|
* any height:
|
|
* <pre>
|
|
* Dimension preferredSize = component.getPreferredSize();
|
|
* int baseline = getBaseline(preferredSize.width,
|
|
* preferredSize.height);
|
|
* int nextBaseline = getBaseline(preferredSize.width,
|
|
* preferredSize.height + 1);
|
|
* // Amount to add to height when calculating where baseline
|
|
* // lands for a particular height:
|
|
* int padding = 0;
|
|
* // Where the baseline is relative to the mid point
|
|
* int baselineOffset = baseline - height / 2;
|
|
* if (preferredSize.height % 2 == 0 &&
|
|
* baseline != nextBaseline) {
|
|
* padding = 1;
|
|
* }
|
|
* else if (preferredSize.height % 2 == 1 &&
|
|
* baseline == nextBaseline) {
|
|
* baselineOffset--;
|
|
* padding = 1;
|
|
* }
|
|
* // The following calculates where the baseline lands for
|
|
* // the height z:
|
|
* int calculatedBaseline = (z + padding) / 2 + baselineOffset;
|
|
* </pre>
|
|
*/
|
|
CENTER_OFFSET,
|
|
|
|
/**
|
|
* Indicates the baseline resize behavior can not be expressed using
|
|
* any of the other constants. This may also indicate the baseline
|
|
* varies with the width of the component. This is also returned
|
|
* by components that do not have a baseline.
|
|
*/
|
|
OTHER
|
|
}
|
|
|
|
/*
|
|
* The shape set with the applyCompoundShape() method. It uncludes the result
|
|
* of the HW/LW mixing related shape computation. It may also include
|
|
* the user-specified shape of the component.
|
|
* The 'null' value means the component has normal shape (or has no shape at all)
|
|
* and applyCompoundShape() will skip the following shape identical to normal.
|
|
*/
|
|
private transient Region compoundShape = null;
|
|
|
|
/*
|
|
* Represents the shape of this lightweight component to be cut out from
|
|
* heavyweight components should they intersect. Possible values:
|
|
* 1. null - consider the shape rectangular
|
|
* 2. EMPTY_REGION - nothing gets cut out (children still get cut out)
|
|
* 3. non-empty - this shape gets cut out.
|
|
*/
|
|
private transient Region mixingCutoutRegion = null;
|
|
|
|
/*
|
|
* Indicates whether addNotify() is complete
|
|
* (i.e. the peer is created).
|
|
*/
|
|
private transient boolean isAddNotifyComplete = false;
|
|
|
|
/**
|
|
* Should only be used in subclass getBounds to check that part of bounds
|
|
* is actualy changing
|
|
*/
|
|
int getBoundsOp() {
|
|
assert Thread.holdsLock(getTreeLock());
|
|
return boundsOp;
|
|
}
|
|
|
|
void setBoundsOp(int op) {
|
|
assert Thread.holdsLock(getTreeLock());
|
|
if (op == ComponentPeer.RESET_OPERATION) {
|
|
boundsOp = ComponentPeer.DEFAULT_OPERATION;
|
|
} else
|
|
if (boundsOp == ComponentPeer.DEFAULT_OPERATION) {
|
|
boundsOp = op;
|
|
}
|
|
}
|
|
|
|
// Whether this Component has had the background erase flag
|
|
// specified via SunToolkit.disableBackgroundErase(). This is
|
|
// needed in order to make this function work on X11 platforms,
|
|
// where currently there is no chance to interpose on the creation
|
|
// of the peer and therefore the call to XSetBackground.
|
|
transient boolean backgroundEraseDisabled;
|
|
|
|
static {
|
|
AWTAccessor.setComponentAccessor(new AWTAccessor.ComponentAccessor() {
|
|
public void setBackgroundEraseDisabled(Component comp, boolean disabled) {
|
|
comp.backgroundEraseDisabled = disabled;
|
|
}
|
|
public boolean getBackgroundEraseDisabled(Component comp) {
|
|
return comp.backgroundEraseDisabled;
|
|
}
|
|
public Rectangle getBounds(Component comp) {
|
|
return new Rectangle(comp.x, comp.y, comp.width, comp.height);
|
|
}
|
|
public void setMixingCutoutShape(Component comp, Shape shape) {
|
|
Region region = shape == null ? null :
|
|
Region.getInstance(shape, null);
|
|
|
|
synchronized (comp.getTreeLock()) {
|
|
boolean needShowing = false;
|
|
boolean needHiding = false;
|
|
|
|
if (!comp.isNonOpaqueForMixing()) {
|
|
needHiding = true;
|
|
}
|
|
|
|
comp.mixingCutoutRegion = region;
|
|
|
|
if (!comp.isNonOpaqueForMixing()) {
|
|
needShowing = true;
|
|
}
|
|
|
|
if (comp.isMixingNeeded()) {
|
|
if (needHiding) {
|
|
comp.mixOnHiding(comp.isLightweight());
|
|
}
|
|
if (needShowing) {
|
|
comp.mixOnShowing();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public void setGraphicsConfiguration(Component comp,
|
|
GraphicsConfiguration gc)
|
|
{
|
|
comp.setGraphicsConfiguration(gc);
|
|
}
|
|
public boolean requestFocus(Component comp, CausedFocusEvent.Cause cause) {
|
|
return comp.requestFocus(cause);
|
|
}
|
|
public boolean canBeFocusOwner(Component comp) {
|
|
return comp.canBeFocusOwner();
|
|
}
|
|
|
|
public boolean isVisible(Component comp) {
|
|
return comp.isVisible_NoClientCode();
|
|
}
|
|
public void setRequestFocusController
|
|
(RequestFocusController requestController)
|
|
{
|
|
Component.setRequestFocusController(requestController);
|
|
}
|
|
public AppContext getAppContext(Component comp) {
|
|
return comp.appContext;
|
|
}
|
|
public void setAppContext(Component comp, AppContext appContext) {
|
|
comp.appContext = appContext;
|
|
}
|
|
public Container getParent(Component comp) {
|
|
return comp.getParent_NoClientCode();
|
|
}
|
|
public void setParent(Component comp, Container parent) {
|
|
comp.parent = parent;
|
|
}
|
|
public void setSize(Component comp, int width, int height) {
|
|
comp.width = width;
|
|
comp.height = height;
|
|
}
|
|
public Point getLocation(Component comp) {
|
|
return comp.location_NoClientCode();
|
|
}
|
|
public void setLocation(Component comp, int x, int y) {
|
|
comp.x = x;
|
|
comp.y = y;
|
|
}
|
|
public boolean isEnabled(Component comp) {
|
|
return comp.isEnabledImpl();
|
|
}
|
|
public boolean isDisplayable(Component comp) {
|
|
return comp.peer != null;
|
|
}
|
|
public Cursor getCursor(Component comp) {
|
|
return comp.getCursor_NoClientCode();
|
|
}
|
|
public ComponentPeer getPeer(Component comp) {
|
|
return comp.peer;
|
|
}
|
|
public void setPeer(Component comp, ComponentPeer peer) {
|
|
comp.peer = peer;
|
|
}
|
|
public boolean isLightweight(Component comp) {
|
|
return (comp.peer instanceof LightweightPeer);
|
|
}
|
|
public boolean getIgnoreRepaint(Component comp) {
|
|
return comp.ignoreRepaint;
|
|
}
|
|
public int getWidth(Component comp) {
|
|
return comp.width;
|
|
}
|
|
public int getHeight(Component comp) {
|
|
return comp.height;
|
|
}
|
|
public int getX(Component comp) {
|
|
return comp.x;
|
|
}
|
|
public int getY(Component comp) {
|
|
return comp.y;
|
|
}
|
|
public Color getForeground(Component comp) {
|
|
return comp.foreground;
|
|
}
|
|
public Color getBackground(Component comp) {
|
|
return comp.background;
|
|
}
|
|
public void setBackground(Component comp, Color background) {
|
|
comp.background = background;
|
|
}
|
|
public Font getFont(Component comp) {
|
|
return comp.getFont_NoClientCode();
|
|
}
|
|
public void processEvent(Component comp, AWTEvent e) {
|
|
comp.processEvent(e);
|
|
}
|
|
|
|
public AccessControlContext getAccessControlContext(Component comp) {
|
|
return comp.getAccessControlContext();
|
|
}
|
|
|
|
public void revalidateSynchronously(Component comp) {
|
|
comp.revalidateSynchronously();
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Constructs a new component. Class <code>Component</code> can be
|
|
* extended directly to create a lightweight component that does not
|
|
* utilize an opaque native window. A lightweight component must be
|
|
* hosted by a native container somewhere higher up in the component
|
|
* tree (for example, by a <code>Frame</code> object).
|
|
*/
|
|
protected Component() {
|
|
appContext = AppContext.getAppContext();
|
|
}
|
|
|
|
@SuppressWarnings({"rawtypes", "unchecked"})
|
|
void initializeFocusTraversalKeys() {
|
|
focusTraversalKeys = new Set[3];
|
|
}
|
|
|
|
/**
|
|
* Constructs a name for this component. Called by <code>getName</code>
|
|
* when the name is <code>null</code>.
|
|
*/
|
|
String constructComponentName() {
|
|
return null; // For strict compliance with prior platform versions, a Component
|
|
// that doesn't set its name should return null from
|
|
// getName()
|
|
}
|
|
|
|
/**
|
|
* Gets the name of the component.
|
|
* @return this component's name
|
|
* @see #setName
|
|
* @since JDK1.1
|
|
*/
|
|
public String getName() {
|
|
if (name == null && !nameExplicitlySet) {
|
|
synchronized(getObjectLock()) {
|
|
if (name == null && !nameExplicitlySet)
|
|
name = constructComponentName();
|
|
}
|
|
}
|
|
return name;
|
|
}
|
|
|
|
/**
|
|
* Sets the name of the component to the specified string.
|
|
* @param name the string that is to be this
|
|
* component's name
|
|
* @see #getName
|
|
* @since JDK1.1
|
|
*/
|
|
public void setName(String name) {
|
|
String oldName;
|
|
synchronized(getObjectLock()) {
|
|
oldName = this.name;
|
|
this.name = name;
|
|
nameExplicitlySet = true;
|
|
}
|
|
firePropertyChange("name", oldName, name);
|
|
}
|
|
|
|
/**
|
|
* Gets the parent of this component.
|
|
* @return the parent container of this component
|
|
* @since JDK1.0
|
|
*/
|
|
public Container getParent() {
|
|
return getParent_NoClientCode();
|
|
}
|
|
|
|
// NOTE: This method may be called by privileged threads.
|
|
// This functionality is implemented in a package-private method
|
|
// to insure that it cannot be overridden by client subclasses.
|
|
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
|
|
final Container getParent_NoClientCode() {
|
|
return parent;
|
|
}
|
|
|
|
// This method is overridden in the Window class to return null,
|
|
// because the parent field of the Window object contains
|
|
// the owner of the window, not its parent.
|
|
Container getContainer() {
|
|
return getParent_NoClientCode();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* programs should not directly manipulate peers;
|
|
* replaced by <code>boolean isDisplayable()</code>.
|
|
*/
|
|
@Deprecated
|
|
public ComponentPeer getPeer() {
|
|
return peer;
|
|
}
|
|
|
|
/**
|
|
* Associate a <code>DropTarget</code> with this component.
|
|
* The <code>Component</code> will receive drops only if it
|
|
* is enabled.
|
|
*
|
|
* @see #isEnabled
|
|
* @param dt The DropTarget
|
|
*/
|
|
|
|
public synchronized void setDropTarget(DropTarget dt) {
|
|
if (dt == dropTarget || (dropTarget != null && dropTarget.equals(dt)))
|
|
return;
|
|
|
|
DropTarget old;
|
|
|
|
if ((old = dropTarget) != null) {
|
|
if (peer != null) dropTarget.removeNotify(peer);
|
|
|
|
DropTarget t = dropTarget;
|
|
|
|
dropTarget = null;
|
|
|
|
try {
|
|
t.setComponent(null);
|
|
} catch (IllegalArgumentException iae) {
|
|
// ignore it.
|
|
}
|
|
}
|
|
|
|
// if we have a new one, and we have a peer, add it!
|
|
|
|
if ((dropTarget = dt) != null) {
|
|
try {
|
|
dropTarget.setComponent(this);
|
|
if (peer != null) dropTarget.addNotify(peer);
|
|
} catch (IllegalArgumentException iae) {
|
|
if (old != null) {
|
|
try {
|
|
old.setComponent(this);
|
|
if (peer != null) dropTarget.addNotify(peer);
|
|
} catch (IllegalArgumentException iae1) {
|
|
// ignore it!
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>DropTarget</code> associated with this
|
|
* <code>Component</code>.
|
|
*/
|
|
|
|
public synchronized DropTarget getDropTarget() { return dropTarget; }
|
|
|
|
/**
|
|
* Gets the <code>GraphicsConfiguration</code> associated with this
|
|
* <code>Component</code>.
|
|
* If the <code>Component</code> has not been assigned a specific
|
|
* <code>GraphicsConfiguration</code>,
|
|
* the <code>GraphicsConfiguration</code> of the
|
|
* <code>Component</code> object's top-level container is
|
|
* returned.
|
|
* If the <code>Component</code> has been created, but not yet added
|
|
* to a <code>Container</code>, this method returns <code>null</code>.
|
|
*
|
|
* @return the <code>GraphicsConfiguration</code> used by this
|
|
* <code>Component</code> or <code>null</code>
|
|
* @since 1.3
|
|
*/
|
|
public GraphicsConfiguration getGraphicsConfiguration() {
|
|
return getGraphicsConfiguration_NoClientCode();
|
|
}
|
|
|
|
final GraphicsConfiguration getGraphicsConfiguration_NoClientCode() {
|
|
return graphicsConfig;
|
|
}
|
|
|
|
void setGraphicsConfiguration(GraphicsConfiguration gc) {
|
|
synchronized(getTreeLock()) {
|
|
if (updateGraphicsData(gc)) {
|
|
removeNotify();
|
|
addNotify();
|
|
}
|
|
}
|
|
}
|
|
|
|
boolean updateGraphicsData(GraphicsConfiguration gc) {
|
|
checkTreeLock();
|
|
|
|
if (graphicsConfig == gc) {
|
|
return false;
|
|
}
|
|
|
|
graphicsConfig = gc;
|
|
|
|
ComponentPeer peer = getPeer();
|
|
if (peer != null) {
|
|
return peer.updateGraphicsData(gc);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks that this component's <code>GraphicsDevice</code>
|
|
* <code>idString</code> matches the string argument.
|
|
*/
|
|
void checkGD(String stringID) {
|
|
if (graphicsConfig != null) {
|
|
if (!graphicsConfig.getDevice().getIDstring().equals(stringID)) {
|
|
throw new IllegalArgumentException(
|
|
"adding a container to a container on a different GraphicsDevice");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets this component's locking object (the object that owns the thread
|
|
* synchronization monitor) for AWT component-tree and layout
|
|
* operations.
|
|
* @return this component's locking object
|
|
*/
|
|
public final Object getTreeLock() {
|
|
return LOCK;
|
|
}
|
|
|
|
final void checkTreeLock() {
|
|
if (!Thread.holdsLock(getTreeLock())) {
|
|
throw new IllegalStateException("This function should be called while holding treeLock");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the toolkit of this component. Note that
|
|
* the frame that contains a component controls which
|
|
* toolkit is used by that component. Therefore if the component
|
|
* is moved from one frame to another, the toolkit it uses may change.
|
|
* @return the toolkit of this component
|
|
* @since JDK1.0
|
|
*/
|
|
public Toolkit getToolkit() {
|
|
return getToolkitImpl();
|
|
}
|
|
|
|
/*
|
|
* This is called by the native code, so client code can't
|
|
* be called on the toolkit thread.
|
|
*/
|
|
final Toolkit getToolkitImpl() {
|
|
Container parent = this.parent;
|
|
if (parent != null) {
|
|
return parent.getToolkitImpl();
|
|
}
|
|
return Toolkit.getDefaultToolkit();
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component is valid. A component is valid
|
|
* when it is correctly sized and positioned within its parent
|
|
* container and all its children are also valid.
|
|
* In order to account for peers' size requirements, components are invalidated
|
|
* before they are first shown on the screen. By the time the parent container
|
|
* is fully realized, all its components will be valid.
|
|
* @return <code>true</code> if the component is valid, <code>false</code>
|
|
* otherwise
|
|
* @see #validate
|
|
* @see #invalidate
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isValid() {
|
|
return (peer != null) && valid;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component is displayable. A component is
|
|
* displayable when it is connected to a native screen resource.
|
|
* <p>
|
|
* A component is made displayable either when it is added to
|
|
* a displayable containment hierarchy or when its containment
|
|
* hierarchy is made displayable.
|
|
* A containment hierarchy is made displayable when its ancestor
|
|
* window is either packed or made visible.
|
|
* <p>
|
|
* A component is made undisplayable either when it is removed from
|
|
* a displayable containment hierarchy or when its containment hierarchy
|
|
* is made undisplayable. A containment hierarchy is made
|
|
* undisplayable when its ancestor window is disposed.
|
|
*
|
|
* @return <code>true</code> if the component is displayable,
|
|
* <code>false</code> otherwise
|
|
* @see Container#add(Component)
|
|
* @see Window#pack
|
|
* @see Window#show
|
|
* @see Container#remove(Component)
|
|
* @see Window#dispose
|
|
* @since 1.2
|
|
*/
|
|
public boolean isDisplayable() {
|
|
return getPeer() != null;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component should be visible when its
|
|
* parent is visible. Components are
|
|
* initially visible, with the exception of top level components such
|
|
* as <code>Frame</code> objects.
|
|
* @return <code>true</code> if the component is visible,
|
|
* <code>false</code> otherwise
|
|
* @see #setVisible
|
|
* @since JDK1.0
|
|
*/
|
|
@Transient
|
|
public boolean isVisible() {
|
|
return isVisible_NoClientCode();
|
|
}
|
|
final boolean isVisible_NoClientCode() {
|
|
return visible;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component will be displayed on the screen.
|
|
* @return <code>true</code> if the component and all of its ancestors
|
|
* until a toplevel window or null parent are visible,
|
|
* <code>false</code> otherwise
|
|
*/
|
|
boolean isRecursivelyVisible() {
|
|
return visible && (parent == null || parent.isRecursivelyVisible());
|
|
}
|
|
|
|
/**
|
|
* Determines the bounds of a visible part of the component relative to its
|
|
* parent.
|
|
*
|
|
* @return the visible part of bounds
|
|
*/
|
|
private Rectangle getRecursivelyVisibleBounds() {
|
|
final Component container = getContainer();
|
|
final Rectangle bounds = getBounds();
|
|
if (container == null) {
|
|
// we are top level window or haven't a container, return our bounds
|
|
return bounds;
|
|
}
|
|
// translate the container's bounds to our coordinate space
|
|
final Rectangle parentsBounds = container.getRecursivelyVisibleBounds();
|
|
parentsBounds.setLocation(0, 0);
|
|
return parentsBounds.intersection(bounds);
|
|
}
|
|
|
|
/**
|
|
* Translates absolute coordinates into coordinates in the coordinate
|
|
* space of this component.
|
|
*/
|
|
Point pointRelativeToComponent(Point absolute) {
|
|
Point compCoords = getLocationOnScreen();
|
|
return new Point(absolute.x - compCoords.x,
|
|
absolute.y - compCoords.y);
|
|
}
|
|
|
|
/**
|
|
* Assuming that mouse location is stored in PointerInfo passed
|
|
* to this method, it finds a Component that is in the same
|
|
* Window as this Component and is located under the mouse pointer.
|
|
* If no such Component exists, null is returned.
|
|
* NOTE: this method should be called under the protection of
|
|
* tree lock, as it is done in Component.getMousePosition() and
|
|
* Container.getMousePosition(boolean).
|
|
*/
|
|
Component findUnderMouseInWindow(PointerInfo pi) {
|
|
if (!isShowing()) {
|
|
return null;
|
|
}
|
|
Window win = getContainingWindow();
|
|
if (!Toolkit.getDefaultToolkit().getMouseInfoPeer().isWindowUnderMouse(win)) {
|
|
return null;
|
|
}
|
|
final boolean INCLUDE_DISABLED = true;
|
|
Point relativeToWindow = win.pointRelativeToComponent(pi.getLocation());
|
|
Component inTheSameWindow = win.findComponentAt(relativeToWindow.x,
|
|
relativeToWindow.y,
|
|
INCLUDE_DISABLED);
|
|
return inTheSameWindow;
|
|
}
|
|
|
|
/**
|
|
* Returns the position of the mouse pointer in this <code>Component</code>'s
|
|
* coordinate space if the <code>Component</code> is directly under the mouse
|
|
* pointer, otherwise returns <code>null</code>.
|
|
* If the <code>Component</code> is not showing on the screen, this method
|
|
* returns <code>null</code> even if the mouse pointer is above the area
|
|
* where the <code>Component</code> would be displayed.
|
|
* If the <code>Component</code> is partially or fully obscured by other
|
|
* <code>Component</code>s or native windows, this method returns a non-null
|
|
* value only if the mouse pointer is located above the unobscured part of the
|
|
* <code>Component</code>.
|
|
* <p>
|
|
* For <code>Container</code>s it returns a non-null value if the mouse is
|
|
* above the <code>Container</code> itself or above any of its descendants.
|
|
* Use {@link Container#getMousePosition(boolean)} if you need to exclude children.
|
|
* <p>
|
|
* Sometimes the exact mouse coordinates are not important, and the only thing
|
|
* that matters is whether a specific <code>Component</code> is under the mouse
|
|
* pointer. If the return value of this method is <code>null</code>, mouse
|
|
* pointer is not directly above the <code>Component</code>.
|
|
*
|
|
* @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
|
|
* @see #isShowing
|
|
* @see Container#getMousePosition
|
|
* @return mouse coordinates relative to this <code>Component</code>, or null
|
|
* @since 1.5
|
|
*/
|
|
public Point getMousePosition() throws HeadlessException {
|
|
if (GraphicsEnvironment.isHeadless()) {
|
|
throw new HeadlessException();
|
|
}
|
|
|
|
PointerInfo pi = java.security.AccessController.doPrivileged(
|
|
new java.security.PrivilegedAction<PointerInfo>() {
|
|
public PointerInfo run() {
|
|
return MouseInfo.getPointerInfo();
|
|
}
|
|
}
|
|
);
|
|
|
|
synchronized (getTreeLock()) {
|
|
Component inTheSameWindow = findUnderMouseInWindow(pi);
|
|
if (!isSameOrAncestorOf(inTheSameWindow, true)) {
|
|
return null;
|
|
}
|
|
return pointRelativeToComponent(pi.getLocation());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Overridden in Container. Must be called under TreeLock.
|
|
*/
|
|
boolean isSameOrAncestorOf(Component comp, boolean allowChildren) {
|
|
return comp == this;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component is showing on screen. This means
|
|
* that the component must be visible, and it must be in a container
|
|
* that is visible and showing.
|
|
* <p>
|
|
* <strong>Note:</strong> sometimes there is no way to detect whether the
|
|
* {@code Component} is actually visible to the user. This can happen when:
|
|
* <ul>
|
|
* <li>the component has been added to a visible {@code ScrollPane} but
|
|
* the {@code Component} is not currently in the scroll pane's view port.
|
|
* <li>the {@code Component} is obscured by another {@code Component} or
|
|
* {@code Container}.
|
|
* </ul>
|
|
* @return <code>true</code> if the component is showing,
|
|
* <code>false</code> otherwise
|
|
* @see #setVisible
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isShowing() {
|
|
if (visible && (peer != null)) {
|
|
Container parent = this.parent;
|
|
return (parent == null) || parent.isShowing();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Determines whether this component is enabled. An enabled component
|
|
* can respond to user input and generate events. Components are
|
|
* enabled initially by default. A component may be enabled or disabled by
|
|
* calling its <code>setEnabled</code> method.
|
|
* @return <code>true</code> if the component is enabled,
|
|
* <code>false</code> otherwise
|
|
* @see #setEnabled
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean isEnabled() {
|
|
return isEnabledImpl();
|
|
}
|
|
|
|
/*
|
|
* This is called by the native code, so client code can't
|
|
* be called on the toolkit thread.
|
|
*/
|
|
final boolean isEnabledImpl() {
|
|
return enabled;
|
|
}
|
|
|
|
/**
|
|
* Enables or disables this component, depending on the value of the
|
|
* parameter <code>b</code>. An enabled component can respond to user
|
|
* input and generate events. Components are enabled initially by default.
|
|
*
|
|
* <p>Note: Disabling a lightweight component does not prevent it from
|
|
* receiving MouseEvents.
|
|
* <p>Note: Disabling a heavyweight container prevents all components
|
|
* in this container from receiving any input events. But disabling a
|
|
* lightweight container affects only this container.
|
|
*
|
|
* @param b If <code>true</code>, this component is
|
|
* enabled; otherwise this component is disabled
|
|
* @see #isEnabled
|
|
* @see #isLightweight
|
|
* @since JDK1.1
|
|
*/
|
|
public void setEnabled(boolean b) {
|
|
enable(b);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setEnabled(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void enable() {
|
|
if (!enabled) {
|
|
synchronized (getTreeLock()) {
|
|
enabled = true;
|
|
ComponentPeer peer = this.peer;
|
|
if (peer != null) {
|
|
peer.setEnabled(true);
|
|
if (visible && !getRecursivelyVisibleBounds().isEmpty()) {
|
|
updateCursorImmediately();
|
|
}
|
|
}
|
|
}
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.ENABLED);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setEnabled(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void enable(boolean b) {
|
|
if (b) {
|
|
enable();
|
|
} else {
|
|
disable();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setEnabled(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void disable() {
|
|
if (enabled) {
|
|
KeyboardFocusManager.clearMostRecentFocusOwner(this);
|
|
synchronized (getTreeLock()) {
|
|
enabled = false;
|
|
// A disabled lw container is allowed to contain a focus owner.
|
|
if ((isFocusOwner() || (containsFocus() && !isLightweight())) &&
|
|
KeyboardFocusManager.isAutoFocusTransferEnabled())
|
|
{
|
|
// Don't clear the global focus owner. If transferFocus
|
|
// fails, we want the focus to stay on the disabled
|
|
// Component so that keyboard traversal, et. al. still
|
|
// makes sense to the user.
|
|
transferFocus(false);
|
|
}
|
|
ComponentPeer peer = this.peer;
|
|
if (peer != null) {
|
|
peer.setEnabled(false);
|
|
if (visible && !getRecursivelyVisibleBounds().isEmpty()) {
|
|
updateCursorImmediately();
|
|
}
|
|
}
|
|
}
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.ENABLED);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if this component is painted to an offscreen image
|
|
* ("buffer") that's copied to the screen later. Component
|
|
* subclasses that support double buffering should override this
|
|
* method to return true if double buffering is enabled.
|
|
*
|
|
* @return false by default
|
|
*/
|
|
public boolean isDoubleBuffered() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Enables or disables input method support for this component. If input
|
|
* method support is enabled and the component also processes key events,
|
|
* incoming events are offered to
|
|
* the current input method and will only be processed by the component or
|
|
* dispatched to its listeners if the input method does not consume them.
|
|
* By default, input method support is enabled.
|
|
*
|
|
* @param enable true to enable, false to disable
|
|
* @see #processKeyEvent
|
|
* @since 1.2
|
|
*/
|
|
public void enableInputMethods(boolean enable) {
|
|
if (enable) {
|
|
if ((eventMask & AWTEvent.INPUT_METHODS_ENABLED_MASK) != 0)
|
|
return;
|
|
|
|
// If this component already has focus, then activate the
|
|
// input method by dispatching a synthesized focus gained
|
|
// event.
|
|
if (isFocusOwner()) {
|
|
InputContext inputContext = getInputContext();
|
|
if (inputContext != null) {
|
|
FocusEvent focusGainedEvent =
|
|
new FocusEvent(this, FocusEvent.FOCUS_GAINED);
|
|
inputContext.dispatchEvent(focusGainedEvent);
|
|
}
|
|
}
|
|
|
|
eventMask |= AWTEvent.INPUT_METHODS_ENABLED_MASK;
|
|
} else {
|
|
if ((eventMask & AWTEvent.INPUT_METHODS_ENABLED_MASK) != 0) {
|
|
InputContext inputContext = getInputContext();
|
|
if (inputContext != null) {
|
|
inputContext.endComposition();
|
|
inputContext.removeNotify(this);
|
|
}
|
|
}
|
|
eventMask &= ~AWTEvent.INPUT_METHODS_ENABLED_MASK;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Shows or hides this component depending on the value of parameter
|
|
* <code>b</code>.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param b if <code>true</code>, shows this component;
|
|
* otherwise, hides this component
|
|
* @see #isVisible
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setVisible(boolean b) {
|
|
show(b);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setVisible(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void show() {
|
|
if (!visible) {
|
|
synchronized (getTreeLock()) {
|
|
visible = true;
|
|
mixOnShowing();
|
|
ComponentPeer peer = this.peer;
|
|
if (peer != null) {
|
|
peer.setVisible(true);
|
|
createHierarchyEvents(HierarchyEvent.HIERARCHY_CHANGED,
|
|
this, parent,
|
|
HierarchyEvent.SHOWING_CHANGED,
|
|
Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK));
|
|
if (peer instanceof LightweightPeer) {
|
|
repaint();
|
|
}
|
|
updateCursorImmediately();
|
|
}
|
|
|
|
if (componentListener != null ||
|
|
(eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 ||
|
|
Toolkit.enabledOnToolkit(AWTEvent.COMPONENT_EVENT_MASK)) {
|
|
ComponentEvent e = new ComponentEvent(this,
|
|
ComponentEvent.COMPONENT_SHOWN);
|
|
Toolkit.getEventQueue().postEvent(e);
|
|
}
|
|
}
|
|
Container parent = this.parent;
|
|
if (parent != null) {
|
|
parent.invalidate();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setVisible(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void show(boolean b) {
|
|
if (b) {
|
|
show();
|
|
} else {
|
|
hide();
|
|
}
|
|
}
|
|
|
|
boolean containsFocus() {
|
|
return isFocusOwner();
|
|
}
|
|
|
|
void clearMostRecentFocusOwnerOnHide() {
|
|
KeyboardFocusManager.clearMostRecentFocusOwner(this);
|
|
}
|
|
|
|
void clearCurrentFocusCycleRootOnHide() {
|
|
/* do nothing */
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setVisible(boolean)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void hide() {
|
|
isPacked = false;
|
|
|
|
if (visible) {
|
|
clearCurrentFocusCycleRootOnHide();
|
|
clearMostRecentFocusOwnerOnHide();
|
|
synchronized (getTreeLock()) {
|
|
visible = false;
|
|
mixOnHiding(isLightweight());
|
|
if (containsFocus() && KeyboardFocusManager.isAutoFocusTransferEnabled()) {
|
|
transferFocus(true);
|
|
}
|
|
ComponentPeer peer = this.peer;
|
|
if (peer != null) {
|
|
peer.setVisible(false);
|
|
createHierarchyEvents(HierarchyEvent.HIERARCHY_CHANGED,
|
|
this, parent,
|
|
HierarchyEvent.SHOWING_CHANGED,
|
|
Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK));
|
|
if (peer instanceof LightweightPeer) {
|
|
repaint();
|
|
}
|
|
updateCursorImmediately();
|
|
}
|
|
if (componentListener != null ||
|
|
(eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 ||
|
|
Toolkit.enabledOnToolkit(AWTEvent.COMPONENT_EVENT_MASK)) {
|
|
ComponentEvent e = new ComponentEvent(this,
|
|
ComponentEvent.COMPONENT_HIDDEN);
|
|
Toolkit.getEventQueue().postEvent(e);
|
|
}
|
|
}
|
|
Container parent = this.parent;
|
|
if (parent != null) {
|
|
parent.invalidate();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the foreground color of this component.
|
|
* @return this component's foreground color; if this component does
|
|
* not have a foreground color, the foreground color of its parent
|
|
* is returned
|
|
* @see #setForeground
|
|
* @since JDK1.0
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
@Transient
|
|
public Color getForeground() {
|
|
Color foreground = this.foreground;
|
|
if (foreground != null) {
|
|
return foreground;
|
|
}
|
|
Container parent = this.parent;
|
|
return (parent != null) ? parent.getForeground() : null;
|
|
}
|
|
|
|
/**
|
|
* Sets the foreground color of this component.
|
|
* @param c the color to become this component's
|
|
* foreground color; if this parameter is <code>null</code>
|
|
* then this component will inherit
|
|
* the foreground color of its parent
|
|
* @see #getForeground
|
|
* @since JDK1.0
|
|
*/
|
|
public void setForeground(Color c) {
|
|
Color oldColor = foreground;
|
|
ComponentPeer peer = this.peer;
|
|
foreground = c;
|
|
if (peer != null) {
|
|
c = getForeground();
|
|
if (c != null) {
|
|
peer.setForeground(c);
|
|
}
|
|
}
|
|
// This is a bound property, so report the change to
|
|
// any registered listeners. (Cheap if there are none.)
|
|
firePropertyChange("foreground", oldColor, c);
|
|
}
|
|
|
|
/**
|
|
* Returns whether the foreground color has been explicitly set for this
|
|
* Component. If this method returns <code>false</code>, this Component is
|
|
* inheriting its foreground color from an ancestor.
|
|
*
|
|
* @return <code>true</code> if the foreground color has been explicitly
|
|
* set for this Component; <code>false</code> otherwise.
|
|
* @since 1.4
|
|
*/
|
|
public boolean isForegroundSet() {
|
|
return (foreground != null);
|
|
}
|
|
|
|
/**
|
|
* Gets the background color of this component.
|
|
* @return this component's background color; if this component does
|
|
* not have a background color,
|
|
* the background color of its parent is returned
|
|
* @see #setBackground
|
|
* @since JDK1.0
|
|
*/
|
|
@Transient
|
|
public Color getBackground() {
|
|
Color background = this.background;
|
|
if (background != null) {
|
|
return background;
|
|
}
|
|
Container parent = this.parent;
|
|
return (parent != null) ? parent.getBackground() : null;
|
|
}
|
|
|
|
/**
|
|
* Sets the background color of this component.
|
|
* <p>
|
|
* The background color affects each component differently and the
|
|
* parts of the component that are affected by the background color
|
|
* may differ between operating systems.
|
|
*
|
|
* @param c the color to become this component's color;
|
|
* if this parameter is <code>null</code>, then this
|
|
* component will inherit the background color of its parent
|
|
* @see #getBackground
|
|
* @since JDK1.0
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setBackground(Color c) {
|
|
Color oldColor = background;
|
|
ComponentPeer peer = this.peer;
|
|
background = c;
|
|
if (peer != null) {
|
|
c = getBackground();
|
|
if (c != null) {
|
|
peer.setBackground(c);
|
|
}
|
|
}
|
|
// This is a bound property, so report the change to
|
|
// any registered listeners. (Cheap if there are none.)
|
|
firePropertyChange("background", oldColor, c);
|
|
}
|
|
|
|
/**
|
|
* Returns whether the background color has been explicitly set for this
|
|
* Component. If this method returns <code>false</code>, this Component is
|
|
* inheriting its background color from an ancestor.
|
|
*
|
|
* @return <code>true</code> if the background color has been explicitly
|
|
* set for this Component; <code>false</code> otherwise.
|
|
* @since 1.4
|
|
*/
|
|
public boolean isBackgroundSet() {
|
|
return (background != null);
|
|
}
|
|
|
|
/**
|
|
* Gets the font of this component.
|
|
* @return this component's font; if a font has not been set
|
|
* for this component, the font of its parent is returned
|
|
* @see #setFont
|
|
* @since JDK1.0
|
|
*/
|
|
@Transient
|
|
public Font getFont() {
|
|
return getFont_NoClientCode();
|
|
}
|
|
|
|
// NOTE: This method may be called by privileged threads.
|
|
// This functionality is implemented in a package-private method
|
|
// to insure that it cannot be overridden by client subclasses.
|
|
// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
|
|
final Font getFont_NoClientCode() {
|
|
Font font = this.font;
|
|
if (font != null) {
|
|
return font;
|
|
}
|
|
Container parent = this.parent;
|
|
return (parent != null) ? parent.getFont_NoClientCode() : null;
|
|
}
|
|
|
|
/**
|
|
* Sets the font of this component.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param f the font to become this component's font;
|
|
* if this parameter is <code>null</code> then this
|
|
* component will inherit the font of its parent
|
|
* @see #getFont
|
|
* @see #invalidate
|
|
* @since JDK1.0
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setFont(Font f) {
|
|
Font oldFont, newFont;
|
|
synchronized(getTreeLock()) {
|
|
oldFont = font;
|
|
newFont = font = f;
|
|
ComponentPeer peer = this.peer;
|
|
if (peer != null) {
|
|
f = getFont();
|
|
if (f != null) {
|
|
peer.setFont(f);
|
|
peerFont = f;
|
|
}
|
|
}
|
|
}
|
|
// This is a bound property, so report the change to
|
|
// any registered listeners. (Cheap if there are none.)
|
|
firePropertyChange("font", oldFont, newFont);
|
|
|
|
// This could change the preferred size of the Component.
|
|
// Fix for 6213660. Should compare old and new fonts and do not
|
|
// call invalidate() if they are equal.
|
|
if (f != oldFont && (oldFont == null ||
|
|
!oldFont.equals(f))) {
|
|
invalidateIfValid();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns whether the font has been explicitly set for this Component. If
|
|
* this method returns <code>false</code>, this Component is inheriting its
|
|
* font from an ancestor.
|
|
*
|
|
* @return <code>true</code> if the font has been explicitly set for this
|
|
* Component; <code>false</code> otherwise.
|
|
* @since 1.4
|
|
*/
|
|
public boolean isFontSet() {
|
|
return (font != null);
|
|
}
|
|
|
|
/**
|
|
* Gets the locale of this component.
|
|
* @return this component's locale; if this component does not
|
|
* have a locale, the locale of its parent is returned
|
|
* @see #setLocale
|
|
* @exception IllegalComponentStateException if the <code>Component</code>
|
|
* does not have its own locale and has not yet been added to
|
|
* a containment hierarchy such that the locale can be determined
|
|
* from the containing parent
|
|
* @since JDK1.1
|
|
*/
|
|
public Locale getLocale() {
|
|
Locale locale = this.locale;
|
|
if (locale != null) {
|
|
return locale;
|
|
}
|
|
Container parent = this.parent;
|
|
|
|
if (parent == null) {
|
|
throw new IllegalComponentStateException("This component must have a parent in order to determine its locale");
|
|
} else {
|
|
return parent.getLocale();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the locale of this component. This is a bound property.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param l the locale to become this component's locale
|
|
* @see #getLocale
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setLocale(Locale l) {
|
|
Locale oldValue = locale;
|
|
locale = l;
|
|
|
|
// This is a bound property, so report the change to
|
|
// any registered listeners. (Cheap if there are none.)
|
|
firePropertyChange("locale", oldValue, l);
|
|
|
|
// This could change the preferred size of the Component.
|
|
invalidateIfValid();
|
|
}
|
|
|
|
/**
|
|
* Gets the instance of <code>ColorModel</code> used to display
|
|
* the component on the output device.
|
|
* @return the color model used by this component
|
|
* @see java.awt.image.ColorModel
|
|
* @see java.awt.peer.ComponentPeer#getColorModel()
|
|
* @see Toolkit#getColorModel()
|
|
* @since JDK1.0
|
|
*/
|
|
public ColorModel getColorModel() {
|
|
ComponentPeer peer = this.peer;
|
|
if ((peer != null) && ! (peer instanceof LightweightPeer)) {
|
|
return peer.getColorModel();
|
|
} else if (GraphicsEnvironment.isHeadless()) {
|
|
return ColorModel.getRGBdefault();
|
|
} // else
|
|
return getToolkit().getColorModel();
|
|
}
|
|
|
|
/**
|
|
* Gets the location of this component in the form of a
|
|
* point specifying the component's top-left corner.
|
|
* The location will be relative to the parent's coordinate space.
|
|
* <p>
|
|
* Due to the asynchronous nature of native event handling, this
|
|
* method can return outdated values (for instance, after several calls
|
|
* of <code>setLocation()</code> in rapid succession). For this
|
|
* reason, the recommended method of obtaining a component's position is
|
|
* within <code>java.awt.event.ComponentListener.componentMoved()</code>,
|
|
* which is called after the operating system has finished moving the
|
|
* component.
|
|
* </p>
|
|
* @return an instance of <code>Point</code> representing
|
|
* the top-left corner of the component's bounds in
|
|
* the coordinate space of the component's parent
|
|
* @see #setLocation
|
|
* @see #getLocationOnScreen
|
|
* @since JDK1.1
|
|
*/
|
|
public Point getLocation() {
|
|
return location();
|
|
}
|
|
|
|
/**
|
|
* Gets the location of this component in the form of a point
|
|
* specifying the component's top-left corner in the screen's
|
|
* coordinate space.
|
|
* @return an instance of <code>Point</code> representing
|
|
* the top-left corner of the component's bounds in the
|
|
* coordinate space of the screen
|
|
* @throws IllegalComponentStateException if the
|
|
* component is not showing on the screen
|
|
* @see #setLocation
|
|
* @see #getLocation
|
|
*/
|
|
public Point getLocationOnScreen() {
|
|
synchronized (getTreeLock()) {
|
|
return getLocationOnScreen_NoTreeLock();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* a package private version of getLocationOnScreen
|
|
* used by GlobalCursormanager to update cursor
|
|
*/
|
|
final Point getLocationOnScreen_NoTreeLock() {
|
|
|
|
if (peer != null && isShowing()) {
|
|
if (peer instanceof LightweightPeer) {
|
|
// lightweight component location needs to be translated
|
|
// relative to a native component.
|
|
Container host = getNativeContainer();
|
|
Point pt = host.peer.getLocationOnScreen();
|
|
for(Component c = this; c != host; c = c.getParent()) {
|
|
pt.x += c.x;
|
|
pt.y += c.y;
|
|
}
|
|
return pt;
|
|
} else {
|
|
Point pt = peer.getLocationOnScreen();
|
|
return pt;
|
|
}
|
|
} else {
|
|
throw new IllegalComponentStateException("component must be showing on the screen to determine its location");
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>getLocation()</code>.
|
|
*/
|
|
@Deprecated
|
|
public Point location() {
|
|
return location_NoClientCode();
|
|
}
|
|
|
|
private Point location_NoClientCode() {
|
|
return new Point(x, y);
|
|
}
|
|
|
|
/**
|
|
* Moves this component to a new location. The top-left corner of
|
|
* the new location is specified by the <code>x</code> and <code>y</code>
|
|
* parameters in the coordinate space of this component's parent.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param x the <i>x</i>-coordinate of the new location's
|
|
* top-left corner in the parent's coordinate space
|
|
* @param y the <i>y</i>-coordinate of the new location's
|
|
* top-left corner in the parent's coordinate space
|
|
* @see #getLocation
|
|
* @see #setBounds
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setLocation(int x, int y) {
|
|
move(x, y);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setLocation(int, int)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void move(int x, int y) {
|
|
synchronized(getTreeLock()) {
|
|
setBoundsOp(ComponentPeer.SET_LOCATION);
|
|
setBounds(x, y, width, height);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves this component to a new location. The top-left corner of
|
|
* the new location is specified by point <code>p</code>. Point
|
|
* <code>p</code> is given in the parent's coordinate space.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param p the point defining the top-left corner
|
|
* of the new location, given in the coordinate space of this
|
|
* component's parent
|
|
* @see #getLocation
|
|
* @see #setBounds
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setLocation(Point p) {
|
|
setLocation(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* Returns the size of this component in the form of a
|
|
* <code>Dimension</code> object. The <code>height</code>
|
|
* field of the <code>Dimension</code> object contains
|
|
* this component's height, and the <code>width</code>
|
|
* field of the <code>Dimension</code> object contains
|
|
* this component's width.
|
|
* @return a <code>Dimension</code> object that indicates the
|
|
* size of this component
|
|
* @see #setSize
|
|
* @since JDK1.1
|
|
*/
|
|
public Dimension getSize() {
|
|
return size();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>getSize()</code>.
|
|
*/
|
|
@Deprecated
|
|
public Dimension size() {
|
|
return new Dimension(width, height);
|
|
}
|
|
|
|
/**
|
|
* Resizes this component so that it has width <code>width</code>
|
|
* and height <code>height</code>.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param width the new width of this component in pixels
|
|
* @param height the new height of this component in pixels
|
|
* @see #getSize
|
|
* @see #setBounds
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setSize(int width, int height) {
|
|
resize(width, height);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setSize(int, int)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void resize(int width, int height) {
|
|
synchronized(getTreeLock()) {
|
|
setBoundsOp(ComponentPeer.SET_SIZE);
|
|
setBounds(x, y, width, height);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Resizes this component so that it has width <code>d.width</code>
|
|
* and height <code>d.height</code>.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param d the dimension specifying the new size
|
|
* of this component
|
|
* @throws NullPointerException if {@code d} is {@code null}
|
|
* @see #setSize
|
|
* @see #setBounds
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setSize(Dimension d) {
|
|
resize(d);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setSize(Dimension)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void resize(Dimension d) {
|
|
setSize(d.width, d.height);
|
|
}
|
|
|
|
/**
|
|
* Gets the bounds of this component in the form of a
|
|
* <code>Rectangle</code> object. The bounds specify this
|
|
* component's width, height, and location relative to
|
|
* its parent.
|
|
* @return a rectangle indicating this component's bounds
|
|
* @see #setBounds
|
|
* @see #getLocation
|
|
* @see #getSize
|
|
*/
|
|
public Rectangle getBounds() {
|
|
return bounds();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>getBounds()</code>.
|
|
*/
|
|
@Deprecated
|
|
public Rectangle bounds() {
|
|
return new Rectangle(x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Moves and resizes this component. The new location of the top-left
|
|
* corner is specified by <code>x</code> and <code>y</code>, and the
|
|
* new size is specified by <code>width</code> and <code>height</code>.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param x the new <i>x</i>-coordinate of this component
|
|
* @param y the new <i>y</i>-coordinate of this component
|
|
* @param width the new <code>width</code> of this component
|
|
* @param height the new <code>height</code> of this
|
|
* component
|
|
* @see #getBounds
|
|
* @see #setLocation(int, int)
|
|
* @see #setLocation(Point)
|
|
* @see #setSize(int, int)
|
|
* @see #setSize(Dimension)
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setBounds(int x, int y, int width, int height) {
|
|
reshape(x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>setBounds(int, int, int, int)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void reshape(int x, int y, int width, int height) {
|
|
synchronized (getTreeLock()) {
|
|
try {
|
|
setBoundsOp(ComponentPeer.SET_BOUNDS);
|
|
boolean resized = (this.width != width) || (this.height != height);
|
|
boolean moved = (this.x != x) || (this.y != y);
|
|
if (!resized && !moved) {
|
|
return;
|
|
}
|
|
int oldX = this.x;
|
|
int oldY = this.y;
|
|
int oldWidth = this.width;
|
|
int oldHeight = this.height;
|
|
this.x = x;
|
|
this.y = y;
|
|
this.width = width;
|
|
this.height = height;
|
|
|
|
if (resized) {
|
|
isPacked = false;
|
|
}
|
|
|
|
boolean needNotify = true;
|
|
mixOnReshaping();
|
|
if (peer != null) {
|
|
// LightwightPeer is an empty stub so can skip peer.reshape
|
|
if (!(peer instanceof LightweightPeer)) {
|
|
reshapeNativePeer(x, y, width, height, getBoundsOp());
|
|
// Check peer actualy changed coordinates
|
|
resized = (oldWidth != this.width) || (oldHeight != this.height);
|
|
moved = (oldX != this.x) || (oldY != this.y);
|
|
// fix for 5025858: do not send ComponentEvents for toplevel
|
|
// windows here as it is done from peer or native code when
|
|
// the window is really resized or moved, otherwise some
|
|
// events may be sent twice
|
|
if (this instanceof Window) {
|
|
needNotify = false;
|
|
}
|
|
}
|
|
if (resized) {
|
|
invalidate();
|
|
}
|
|
if (parent != null) {
|
|
parent.invalidateIfValid();
|
|
}
|
|
}
|
|
if (needNotify) {
|
|
notifyNewBounds(resized, moved);
|
|
}
|
|
repaintParentIfNeeded(oldX, oldY, oldWidth, oldHeight);
|
|
} finally {
|
|
setBoundsOp(ComponentPeer.RESET_OPERATION);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void repaintParentIfNeeded(int oldX, int oldY, int oldWidth,
|
|
int oldHeight)
|
|
{
|
|
if (parent != null && peer instanceof LightweightPeer && isShowing()) {
|
|
// Have the parent redraw the area this component occupied.
|
|
parent.repaint(oldX, oldY, oldWidth, oldHeight);
|
|
// Have the parent redraw the area this component *now* occupies.
|
|
repaint();
|
|
}
|
|
}
|
|
|
|
private void reshapeNativePeer(int x, int y, int width, int height, int op) {
|
|
// native peer might be offset by more than direct
|
|
// parent since parent might be lightweight.
|
|
int nativeX = x;
|
|
int nativeY = y;
|
|
for (Component c = parent;
|
|
(c != null) && (c.peer instanceof LightweightPeer);
|
|
c = c.parent)
|
|
{
|
|
nativeX += c.x;
|
|
nativeY += c.y;
|
|
}
|
|
peer.setBounds(nativeX, nativeY, width, height, op);
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
private void notifyNewBounds(boolean resized, boolean moved) {
|
|
if (componentListener != null
|
|
|| (eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0
|
|
|| Toolkit.enabledOnToolkit(AWTEvent.COMPONENT_EVENT_MASK))
|
|
{
|
|
if (resized) {
|
|
ComponentEvent e = new ComponentEvent(this,
|
|
ComponentEvent.COMPONENT_RESIZED);
|
|
Toolkit.getEventQueue().postEvent(e);
|
|
}
|
|
if (moved) {
|
|
ComponentEvent e = new ComponentEvent(this,
|
|
ComponentEvent.COMPONENT_MOVED);
|
|
Toolkit.getEventQueue().postEvent(e);
|
|
}
|
|
} else {
|
|
if (this instanceof Container && ((Container)this).countComponents() > 0) {
|
|
boolean enabledOnToolkit =
|
|
Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK);
|
|
if (resized) {
|
|
|
|
((Container)this).createChildHierarchyEvents(
|
|
HierarchyEvent.ANCESTOR_RESIZED, 0, enabledOnToolkit);
|
|
}
|
|
if (moved) {
|
|
((Container)this).createChildHierarchyEvents(
|
|
HierarchyEvent.ANCESTOR_MOVED, 0, enabledOnToolkit);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves and resizes this component to conform to the new
|
|
* bounding rectangle <code>r</code>. This component's new
|
|
* position is specified by <code>r.x</code> and <code>r.y</code>,
|
|
* and its new size is specified by <code>r.width</code> and
|
|
* <code>r.height</code>
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @param r the new bounding rectangle for this component
|
|
* @throws NullPointerException if {@code r} is {@code null}
|
|
* @see #getBounds
|
|
* @see #setLocation(int, int)
|
|
* @see #setLocation(Point)
|
|
* @see #setSize(int, int)
|
|
* @see #setSize(Dimension)
|
|
* @see #invalidate
|
|
* @since JDK1.1
|
|
*/
|
|
public void setBounds(Rectangle r) {
|
|
setBounds(r.x, r.y, r.width, r.height);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current x coordinate of the components origin.
|
|
* This method is preferable to writing
|
|
* <code>component.getBounds().x</code>,
|
|
* or <code>component.getLocation().x</code> because it doesn't
|
|
* cause any heap allocations.
|
|
*
|
|
* @return the current x coordinate of the components origin
|
|
* @since 1.2
|
|
*/
|
|
public int getX() {
|
|
return x;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current y coordinate of the components origin.
|
|
* This method is preferable to writing
|
|
* <code>component.getBounds().y</code>,
|
|
* or <code>component.getLocation().y</code> because it
|
|
* doesn't cause any heap allocations.
|
|
*
|
|
* @return the current y coordinate of the components origin
|
|
* @since 1.2
|
|
*/
|
|
public int getY() {
|
|
return y;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current width of this component.
|
|
* This method is preferable to writing
|
|
* <code>component.getBounds().width</code>,
|
|
* or <code>component.getSize().width</code> because it
|
|
* doesn't cause any heap allocations.
|
|
*
|
|
* @return the current width of this component
|
|
* @since 1.2
|
|
*/
|
|
public int getWidth() {
|
|
return width;
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the current height of this component.
|
|
* This method is preferable to writing
|
|
* <code>component.getBounds().height</code>,
|
|
* or <code>component.getSize().height</code> because it
|
|
* doesn't cause any heap allocations.
|
|
*
|
|
* @return the current height of this component
|
|
* @since 1.2
|
|
*/
|
|
public int getHeight() {
|
|
return height;
|
|
}
|
|
|
|
/**
|
|
* Stores the bounds of this component into "return value" <b>rv</b> and
|
|
* return <b>rv</b>. If rv is <code>null</code> a new
|
|
* <code>Rectangle</code> is allocated.
|
|
* This version of <code>getBounds</code> is useful if the caller
|
|
* wants to avoid allocating a new <code>Rectangle</code> object
|
|
* on the heap.
|
|
*
|
|
* @param rv the return value, modified to the components bounds
|
|
* @return rv
|
|
*/
|
|
public Rectangle getBounds(Rectangle rv) {
|
|
if (rv == null) {
|
|
return new Rectangle(getX(), getY(), getWidth(), getHeight());
|
|
}
|
|
else {
|
|
rv.setBounds(getX(), getY(), getWidth(), getHeight());
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stores the width/height of this component into "return value" <b>rv</b>
|
|
* and return <b>rv</b>. If rv is <code>null</code> a new
|
|
* <code>Dimension</code> object is allocated. This version of
|
|
* <code>getSize</code> is useful if the caller wants to avoid
|
|
* allocating a new <code>Dimension</code> object on the heap.
|
|
*
|
|
* @param rv the return value, modified to the components size
|
|
* @return rv
|
|
*/
|
|
public Dimension getSize(Dimension rv) {
|
|
if (rv == null) {
|
|
return new Dimension(getWidth(), getHeight());
|
|
}
|
|
else {
|
|
rv.setSize(getWidth(), getHeight());
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stores the x,y origin of this component into "return value" <b>rv</b>
|
|
* and return <b>rv</b>. If rv is <code>null</code> a new
|
|
* <code>Point</code> is allocated.
|
|
* This version of <code>getLocation</code> is useful if the
|
|
* caller wants to avoid allocating a new <code>Point</code>
|
|
* object on the heap.
|
|
*
|
|
* @param rv the return value, modified to the components location
|
|
* @return rv
|
|
*/
|
|
public Point getLocation(Point rv) {
|
|
if (rv == null) {
|
|
return new Point(getX(), getY());
|
|
}
|
|
else {
|
|
rv.setLocation(getX(), getY());
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns true if this component is completely opaque, returns
|
|
* false by default.
|
|
* <p>
|
|
* An opaque component paints every pixel within its
|
|
* rectangular region. A non-opaque component paints only some of
|
|
* its pixels, allowing the pixels underneath it to "show through".
|
|
* A component that does not fully paint its pixels therefore
|
|
* provides a degree of transparency.
|
|
* <p>
|
|
* Subclasses that guarantee to always completely paint their
|
|
* contents should override this method and return true.
|
|
*
|
|
* @return true if this component is completely opaque
|
|
* @see #isLightweight
|
|
* @since 1.2
|
|
*/
|
|
public boolean isOpaque() {
|
|
if (getPeer() == null) {
|
|
return false;
|
|
}
|
|
else {
|
|
return !isLightweight();
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* A lightweight component doesn't have a native toolkit peer.
|
|
* Subclasses of <code>Component</code> and <code>Container</code>,
|
|
* other than the ones defined in this package like <code>Button</code>
|
|
* or <code>Scrollbar</code>, are lightweight.
|
|
* All of the Swing components are lightweights.
|
|
* <p>
|
|
* This method will always return <code>false</code> if this component
|
|
* is not displayable because it is impossible to determine the
|
|
* weight of an undisplayable component.
|
|
*
|
|
* @return true if this component has a lightweight peer; false if
|
|
* it has a native peer or no peer
|
|
* @see #isDisplayable
|
|
* @since 1.2
|
|
*/
|
|
public boolean isLightweight() {
|
|
return getPeer() instanceof LightweightPeer;
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the preferred size of this component to a constant
|
|
* value. Subsequent calls to <code>getPreferredSize</code> will always
|
|
* return this value. Setting the preferred size to <code>null</code>
|
|
* restores the default behavior.
|
|
*
|
|
* @param preferredSize The new preferred size, or null
|
|
* @see #getPreferredSize
|
|
* @see #isPreferredSizeSet
|
|
* @since 1.5
|
|
*/
|
|
public void setPreferredSize(Dimension preferredSize) {
|
|
Dimension old;
|
|
// If the preferred size was set, use it as the old value, otherwise
|
|
// use null to indicate we didn't previously have a set preferred
|
|
// size.
|
|
if (prefSizeSet) {
|
|
old = this.prefSize;
|
|
}
|
|
else {
|
|
old = null;
|
|
}
|
|
this.prefSize = preferredSize;
|
|
prefSizeSet = (preferredSize != null);
|
|
firePropertyChange("preferredSize", old, preferredSize);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns true if the preferred size has been set to a
|
|
* non-<code>null</code> value otherwise returns false.
|
|
*
|
|
* @return true if <code>setPreferredSize</code> has been invoked
|
|
* with a non-null value.
|
|
* @since 1.5
|
|
*/
|
|
public boolean isPreferredSizeSet() {
|
|
return prefSizeSet;
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the preferred size of this component.
|
|
* @return a dimension object indicating this component's preferred size
|
|
* @see #getMinimumSize
|
|
* @see LayoutManager
|
|
*/
|
|
public Dimension getPreferredSize() {
|
|
return preferredSize();
|
|
}
|
|
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>getPreferredSize()</code>.
|
|
*/
|
|
@Deprecated
|
|
public Dimension preferredSize() {
|
|
/* Avoid grabbing the lock if a reasonable cached size value
|
|
* is available.
|
|
*/
|
|
Dimension dim = prefSize;
|
|
if (dim == null || !(isPreferredSizeSet() || isValid())) {
|
|
synchronized (getTreeLock()) {
|
|
prefSize = (peer != null) ?
|
|
peer.getPreferredSize() :
|
|
getMinimumSize();
|
|
dim = prefSize;
|
|
}
|
|
}
|
|
return new Dimension(dim);
|
|
}
|
|
|
|
/**
|
|
* Sets the minimum size of this component to a constant
|
|
* value. Subsequent calls to <code>getMinimumSize</code> will always
|
|
* return this value. Setting the minimum size to <code>null</code>
|
|
* restores the default behavior.
|
|
*
|
|
* @param minimumSize the new minimum size of this component
|
|
* @see #getMinimumSize
|
|
* @see #isMinimumSizeSet
|
|
* @since 1.5
|
|
*/
|
|
public void setMinimumSize(Dimension minimumSize) {
|
|
Dimension old;
|
|
// If the minimum size was set, use it as the old value, otherwise
|
|
// use null to indicate we didn't previously have a set minimum
|
|
// size.
|
|
if (minSizeSet) {
|
|
old = this.minSize;
|
|
}
|
|
else {
|
|
old = null;
|
|
}
|
|
this.minSize = minimumSize;
|
|
minSizeSet = (minimumSize != null);
|
|
firePropertyChange("minimumSize", old, minimumSize);
|
|
}
|
|
|
|
/**
|
|
* Returns whether or not <code>setMinimumSize</code> has been
|
|
* invoked with a non-null value.
|
|
*
|
|
* @return true if <code>setMinimumSize</code> has been invoked with a
|
|
* non-null value.
|
|
* @since 1.5
|
|
*/
|
|
public boolean isMinimumSizeSet() {
|
|
return minSizeSet;
|
|
}
|
|
|
|
/**
|
|
* Gets the minimum size of this component.
|
|
* @return a dimension object indicating this component's minimum size
|
|
* @see #getPreferredSize
|
|
* @see LayoutManager
|
|
*/
|
|
public Dimension getMinimumSize() {
|
|
return minimumSize();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>getMinimumSize()</code>.
|
|
*/
|
|
@Deprecated
|
|
public Dimension minimumSize() {
|
|
/* Avoid grabbing the lock if a reasonable cached size value
|
|
* is available.
|
|
*/
|
|
Dimension dim = minSize;
|
|
if (dim == null || !(isMinimumSizeSet() || isValid())) {
|
|
synchronized (getTreeLock()) {
|
|
minSize = (peer != null) ?
|
|
peer.getMinimumSize() :
|
|
size();
|
|
dim = minSize;
|
|
}
|
|
}
|
|
return new Dimension(dim);
|
|
}
|
|
|
|
/**
|
|
* Sets the maximum size of this component to a constant
|
|
* value. Subsequent calls to <code>getMaximumSize</code> will always
|
|
* return this value. Setting the maximum size to <code>null</code>
|
|
* restores the default behavior.
|
|
*
|
|
* @param maximumSize a <code>Dimension</code> containing the
|
|
* desired maximum allowable size
|
|
* @see #getMaximumSize
|
|
* @see #isMaximumSizeSet
|
|
* @since 1.5
|
|
*/
|
|
public void setMaximumSize(Dimension maximumSize) {
|
|
// If the maximum size was set, use it as the old value, otherwise
|
|
// use null to indicate we didn't previously have a set maximum
|
|
// size.
|
|
Dimension old;
|
|
if (maxSizeSet) {
|
|
old = this.maxSize;
|
|
}
|
|
else {
|
|
old = null;
|
|
}
|
|
this.maxSize = maximumSize;
|
|
maxSizeSet = (maximumSize != null);
|
|
firePropertyChange("maximumSize", old, maximumSize);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the maximum size has been set to a non-<code>null</code>
|
|
* value otherwise returns false.
|
|
*
|
|
* @return true if <code>maximumSize</code> is non-<code>null</code>,
|
|
* false otherwise
|
|
* @since 1.5
|
|
*/
|
|
public boolean isMaximumSizeSet() {
|
|
return maxSizeSet;
|
|
}
|
|
|
|
/**
|
|
* Gets the maximum size of this component.
|
|
* @return a dimension object indicating this component's maximum size
|
|
* @see #getMinimumSize
|
|
* @see #getPreferredSize
|
|
* @see LayoutManager
|
|
*/
|
|
public Dimension getMaximumSize() {
|
|
if (isMaximumSizeSet()) {
|
|
return new Dimension(maxSize);
|
|
}
|
|
return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE);
|
|
}
|
|
|
|
/**
|
|
* Returns the alignment along the x axis. This specifies how
|
|
* the component would like to be aligned relative to other
|
|
* components. The value should be a number between 0 and 1
|
|
* where 0 represents alignment along the origin, 1 is aligned
|
|
* the furthest away from the origin, 0.5 is centered, etc.
|
|
*/
|
|
public float getAlignmentX() {
|
|
return CENTER_ALIGNMENT;
|
|
}
|
|
|
|
/**
|
|
* Returns the alignment along the y axis. This specifies how
|
|
* the component would like to be aligned relative to other
|
|
* components. The value should be a number between 0 and 1
|
|
* where 0 represents alignment along the origin, 1 is aligned
|
|
* the furthest away from the origin, 0.5 is centered, etc.
|
|
*/
|
|
public float getAlignmentY() {
|
|
return CENTER_ALIGNMENT;
|
|
}
|
|
|
|
/**
|
|
* Returns the baseline. The baseline is measured from the top of
|
|
* the component. This method is primarily meant for
|
|
* <code>LayoutManager</code>s to align components along their
|
|
* baseline. A return value less than 0 indicates this component
|
|
* does not have a reasonable baseline and that
|
|
* <code>LayoutManager</code>s should not align this component on
|
|
* its baseline.
|
|
* <p>
|
|
* The default implementation returns -1. Subclasses that support
|
|
* baseline should override appropriately. If a value >= 0 is
|
|
* returned, then the component has a valid baseline for any
|
|
* size >= the minimum size and <code>getBaselineResizeBehavior</code>
|
|
* can be used to determine how the baseline changes with size.
|
|
*
|
|
* @param width the width to get the baseline for
|
|
* @param height the height to get the baseline for
|
|
* @return the baseline or < 0 indicating there is no reasonable
|
|
* baseline
|
|
* @throws IllegalArgumentException if width or height is < 0
|
|
* @see #getBaselineResizeBehavior
|
|
* @see java.awt.FontMetrics
|
|
* @since 1.6
|
|
*/
|
|
public int getBaseline(int width, int height) {
|
|
if (width < 0 || height < 0) {
|
|
throw new IllegalArgumentException(
|
|
"Width and height must be >= 0");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Returns an enum indicating how the baseline of the component
|
|
* changes as the size changes. This method is primarily meant for
|
|
* layout managers and GUI builders.
|
|
* <p>
|
|
* The default implementation returns
|
|
* <code>BaselineResizeBehavior.OTHER</code>. Subclasses that have a
|
|
* baseline should override appropriately. Subclasses should
|
|
* never return <code>null</code>; if the baseline can not be
|
|
* calculated return <code>BaselineResizeBehavior.OTHER</code>. Callers
|
|
* should first ask for the baseline using
|
|
* <code>getBaseline</code> and if a value >= 0 is returned use
|
|
* this method. It is acceptable for this method to return a
|
|
* value other than <code>BaselineResizeBehavior.OTHER</code> even if
|
|
* <code>getBaseline</code> returns a value less than 0.
|
|
*
|
|
* @return an enum indicating how the baseline changes as the component
|
|
* size changes
|
|
* @see #getBaseline(int, int)
|
|
* @since 1.6
|
|
*/
|
|
public BaselineResizeBehavior getBaselineResizeBehavior() {
|
|
return BaselineResizeBehavior.OTHER;
|
|
}
|
|
|
|
/**
|
|
* Prompts the layout manager to lay out this component. This is
|
|
* usually called when the component (more specifically, container)
|
|
* is validated.
|
|
* @see #validate
|
|
* @see LayoutManager
|
|
*/
|
|
public void doLayout() {
|
|
layout();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>doLayout()</code>.
|
|
*/
|
|
@Deprecated
|
|
public void layout() {
|
|
}
|
|
|
|
/**
|
|
* Validates this component.
|
|
* <p>
|
|
* The meaning of the term <i>validating</i> is defined by the ancestors of
|
|
* this class. See {@link Container#validate} for more details.
|
|
*
|
|
* @see #invalidate
|
|
* @see #doLayout()
|
|
* @see LayoutManager
|
|
* @see Container#validate
|
|
* @since JDK1.0
|
|
*/
|
|
public void validate() {
|
|
synchronized (getTreeLock()) {
|
|
ComponentPeer peer = this.peer;
|
|
boolean wasValid = isValid();
|
|
if (!wasValid && peer != null) {
|
|
Font newfont = getFont();
|
|
Font oldfont = peerFont;
|
|
if (newfont != oldfont && (oldfont == null
|
|
|| !oldfont.equals(newfont))) {
|
|
peer.setFont(newfont);
|
|
peerFont = newfont;
|
|
}
|
|
peer.layout();
|
|
}
|
|
valid = true;
|
|
if (!wasValid) {
|
|
mixOnValidating();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Invalidates this component and its ancestors.
|
|
* <p>
|
|
* By default, all the ancestors of the component up to the top-most
|
|
* container of the hierarchy are marked invalid. If the {@code
|
|
* java.awt.smartInvalidate} system property is set to {@code true},
|
|
* invalidation stops on the nearest validate root of this component.
|
|
* Marking a container <i>invalid</i> indicates that the container needs to
|
|
* be laid out.
|
|
* <p>
|
|
* This method is called automatically when any layout-related information
|
|
* changes (e.g. setting the bounds of the component, or adding the
|
|
* component to a container).
|
|
* <p>
|
|
* This method might be called often, so it should work fast.
|
|
*
|
|
* @see #validate
|
|
* @see #doLayout
|
|
* @see LayoutManager
|
|
* @see java.awt.Container#isValidateRoot
|
|
* @since JDK1.0
|
|
*/
|
|
public void invalidate() {
|
|
synchronized (getTreeLock()) {
|
|
/* Nullify cached layout and size information.
|
|
* For efficiency, propagate invalidate() upwards only if
|
|
* some other component hasn't already done so first.
|
|
*/
|
|
valid = false;
|
|
if (!isPreferredSizeSet()) {
|
|
prefSize = null;
|
|
}
|
|
if (!isMinimumSizeSet()) {
|
|
minSize = null;
|
|
}
|
|
if (!isMaximumSizeSet()) {
|
|
maxSize = null;
|
|
}
|
|
invalidateParent();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Invalidates the parent of this component if any.
|
|
*
|
|
* This method MUST BE invoked under the TreeLock.
|
|
*/
|
|
void invalidateParent() {
|
|
if (parent != null) {
|
|
parent.invalidateIfValid();
|
|
}
|
|
}
|
|
|
|
/** Invalidates the component unless it is already invalid.
|
|
*/
|
|
final void invalidateIfValid() {
|
|
if (isValid()) {
|
|
invalidate();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Revalidates the component hierarchy up to the nearest validate root.
|
|
* <p>
|
|
* This method first invalidates the component hierarchy starting from this
|
|
* component up to the nearest validate root. Afterwards, the component
|
|
* hierarchy is validated starting from the nearest validate root.
|
|
* <p>
|
|
* This is a convenience method supposed to help application developers
|
|
* avoid looking for validate roots manually. Basically, it's equivalent to
|
|
* first calling the {@link #invalidate()} method on this component, and
|
|
* then calling the {@link #validate()} method on the nearest validate
|
|
* root.
|
|
*
|
|
* @see Container#isValidateRoot
|
|
* @since 1.7
|
|
*/
|
|
public void revalidate() {
|
|
revalidateSynchronously();
|
|
}
|
|
|
|
/**
|
|
* Revalidates the component synchronously.
|
|
*/
|
|
final void revalidateSynchronously() {
|
|
synchronized (getTreeLock()) {
|
|
invalidate();
|
|
|
|
Container root = getContainer();
|
|
if (root == null) {
|
|
// There's no parents. Just validate itself.
|
|
validate();
|
|
} else {
|
|
while (!root.isValidateRoot()) {
|
|
if (root.getContainer() == null) {
|
|
// If there's no validate roots, we'll validate the
|
|
// topmost container
|
|
break;
|
|
}
|
|
|
|
root = root.getContainer();
|
|
}
|
|
|
|
root.validate();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a graphics context for this component. This method will
|
|
* return <code>null</code> if this component is currently not
|
|
* displayable.
|
|
* @return a graphics context for this component, or <code>null</code>
|
|
* if it has none
|
|
* @see #paint
|
|
* @since JDK1.0
|
|
*/
|
|
public Graphics getGraphics() {
|
|
if (peer instanceof LightweightPeer) {
|
|
// This is for a lightweight component, need to
|
|
// translate coordinate spaces and clip relative
|
|
// to the parent.
|
|
if (parent == null) return null;
|
|
Graphics g = parent.getGraphics();
|
|
if (g == null) return null;
|
|
if (g instanceof ConstrainableGraphics) {
|
|
((ConstrainableGraphics) g).constrain(x, y, width, height);
|
|
} else {
|
|
g.translate(x,y);
|
|
g.setClip(0, 0, width, height);
|
|
}
|
|
g.setFont(getFont());
|
|
return g;
|
|
} else {
|
|
ComponentPeer peer = this.peer;
|
|
return (peer != null) ? peer.getGraphics() : null;
|
|
}
|
|
}
|
|
|
|
final Graphics getGraphics_NoClientCode() {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof LightweightPeer) {
|
|
// This is for a lightweight component, need to
|
|
// translate coordinate spaces and clip relative
|
|
// to the parent.
|
|
Container parent = this.parent;
|
|
if (parent == null) return null;
|
|
Graphics g = parent.getGraphics_NoClientCode();
|
|
if (g == null) return null;
|
|
if (g instanceof ConstrainableGraphics) {
|
|
((ConstrainableGraphics) g).constrain(x, y, width, height);
|
|
} else {
|
|
g.translate(x,y);
|
|
g.setClip(0, 0, width, height);
|
|
}
|
|
g.setFont(getFont_NoClientCode());
|
|
return g;
|
|
} else {
|
|
return (peer != null) ? peer.getGraphics() : null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the font metrics for the specified font.
|
|
* Warning: Since Font metrics are affected by the
|
|
* {@link java.awt.font.FontRenderContext FontRenderContext} and
|
|
* this method does not provide one, it can return only metrics for
|
|
* the default render context which may not match that used when
|
|
* rendering on the Component if {@link Graphics2D} functionality is being
|
|
* used. Instead metrics can be obtained at rendering time by calling
|
|
* {@link Graphics#getFontMetrics()} or text measurement APIs on the
|
|
* {@link Font Font} class.
|
|
* @param font the font for which font metrics is to be
|
|
* obtained
|
|
* @return the font metrics for <code>font</code>
|
|
* @see #getFont
|
|
* @see #getPeer
|
|
* @see java.awt.peer.ComponentPeer#getFontMetrics(Font)
|
|
* @see Toolkit#getFontMetrics(Font)
|
|
* @since JDK1.0
|
|
*/
|
|
public FontMetrics getFontMetrics(Font font) {
|
|
// This is an unsupported hack, but left in for a customer.
|
|
// Do not remove.
|
|
FontManager fm = FontManagerFactory.getInstance();
|
|
if (fm instanceof SunFontManager
|
|
&& ((SunFontManager) fm).usePlatformFontMetrics()) {
|
|
|
|
if (peer != null &&
|
|
!(peer instanceof LightweightPeer)) {
|
|
return peer.getFontMetrics(font);
|
|
}
|
|
}
|
|
return sun.font.FontDesignMetrics.getMetrics(font);
|
|
}
|
|
|
|
/**
|
|
* Sets the cursor image to the specified cursor. This cursor
|
|
* image is displayed when the <code>contains</code> method for
|
|
* this component returns true for the current cursor location, and
|
|
* this Component is visible, displayable, and enabled. Setting the
|
|
* cursor of a <code>Container</code> causes that cursor to be displayed
|
|
* within all of the container's subcomponents, except for those
|
|
* that have a non-<code>null</code> cursor.
|
|
* <p>
|
|
* The method may have no visual effect if the Java platform
|
|
* implementation and/or the native system do not support
|
|
* changing the mouse cursor shape.
|
|
* @param cursor One of the constants defined
|
|
* by the <code>Cursor</code> class;
|
|
* if this parameter is <code>null</code>
|
|
* then this component will inherit
|
|
* the cursor of its parent
|
|
* @see #isEnabled
|
|
* @see #isShowing
|
|
* @see #getCursor
|
|
* @see #contains
|
|
* @see Toolkit#createCustomCursor
|
|
* @see Cursor
|
|
* @since JDK1.1
|
|
*/
|
|
public void setCursor(Cursor cursor) {
|
|
this.cursor = cursor;
|
|
updateCursorImmediately();
|
|
}
|
|
|
|
/**
|
|
* Updates the cursor. May not be invoked from the native
|
|
* message pump.
|
|
*/
|
|
final void updateCursorImmediately() {
|
|
if (peer instanceof LightweightPeer) {
|
|
Container nativeContainer = getNativeContainer();
|
|
|
|
if (nativeContainer == null) return;
|
|
|
|
ComponentPeer cPeer = nativeContainer.getPeer();
|
|
|
|
if (cPeer != null) {
|
|
cPeer.updateCursorImmediately();
|
|
}
|
|
} else if (peer != null) {
|
|
peer.updateCursorImmediately();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the cursor set in the component. If the component does
|
|
* not have a cursor set, the cursor of its parent is returned.
|
|
* If no cursor is set in the entire hierarchy,
|
|
* <code>Cursor.DEFAULT_CURSOR</code> is returned.
|
|
* @see #setCursor
|
|
* @since JDK1.1
|
|
*/
|
|
public Cursor getCursor() {
|
|
return getCursor_NoClientCode();
|
|
}
|
|
|
|
final Cursor getCursor_NoClientCode() {
|
|
Cursor cursor = this.cursor;
|
|
if (cursor != null) {
|
|
return cursor;
|
|
}
|
|
Container parent = this.parent;
|
|
if (parent != null) {
|
|
return parent.getCursor_NoClientCode();
|
|
} else {
|
|
return Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns whether the cursor has been explicitly set for this Component.
|
|
* If this method returns <code>false</code>, this Component is inheriting
|
|
* its cursor from an ancestor.
|
|
*
|
|
* @return <code>true</code> if the cursor has been explicitly set for this
|
|
* Component; <code>false</code> otherwise.
|
|
* @since 1.4
|
|
*/
|
|
public boolean isCursorSet() {
|
|
return (cursor != null);
|
|
}
|
|
|
|
/**
|
|
* Paints this component.
|
|
* <p>
|
|
* This method is called when the contents of the component should
|
|
* be painted; such as when the component is first being shown or
|
|
* is damaged and in need of repair. The clip rectangle in the
|
|
* <code>Graphics</code> parameter is set to the area
|
|
* which needs to be painted.
|
|
* Subclasses of <code>Component</code> that override this
|
|
* method need not call <code>super.paint(g)</code>.
|
|
* <p>
|
|
* For performance reasons, <code>Component</code>s with zero width
|
|
* or height aren't considered to need painting when they are first shown,
|
|
* and also aren't considered to need repair.
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
*
|
|
* @param g the graphics context to use for painting
|
|
* @see #update
|
|
* @since JDK1.0
|
|
*/
|
|
public void paint(Graphics g) {
|
|
}
|
|
|
|
/**
|
|
* Updates this component.
|
|
* <p>
|
|
* If this component is not a lightweight component, the
|
|
* AWT calls the <code>update</code> method in response to
|
|
* a call to <code>repaint</code>. You can assume that
|
|
* the background is not cleared.
|
|
* <p>
|
|
* The <code>update</code> method of <code>Component</code>
|
|
* calls this component's <code>paint</code> method to redraw
|
|
* this component. This method is commonly overridden by subclasses
|
|
* which need to do additional work in response to a call to
|
|
* <code>repaint</code>.
|
|
* Subclasses of Component that override this method should either
|
|
* call <code>super.update(g)</code>, or call <code>paint(g)</code>
|
|
* directly from their <code>update</code> method.
|
|
* <p>
|
|
* The origin of the graphics context, its
|
|
* (<code>0</code>, <code>0</code>) coordinate point, is the
|
|
* top-left corner of this component. The clipping region of the
|
|
* graphics context is the bounding rectangle of this component.
|
|
*
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
*
|
|
* @param g the specified context to use for updating
|
|
* @see #paint
|
|
* @see #repaint()
|
|
* @since JDK1.0
|
|
*/
|
|
public void update(Graphics g) {
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Paints this component and all of its subcomponents.
|
|
* <p>
|
|
* The origin of the graphics context, its
|
|
* (<code>0</code>, <code>0</code>) coordinate point, is the
|
|
* top-left corner of this component. The clipping region of the
|
|
* graphics context is the bounding rectangle of this component.
|
|
*
|
|
* @param g the graphics context to use for painting
|
|
* @see #paint
|
|
* @since JDK1.0
|
|
*/
|
|
public void paintAll(Graphics g) {
|
|
if (isShowing()) {
|
|
GraphicsCallback.PeerPaintCallback.getInstance().
|
|
runOneComponent(this, new Rectangle(0, 0, width, height),
|
|
g, g.getClip(),
|
|
GraphicsCallback.LIGHTWEIGHTS |
|
|
GraphicsCallback.HEAVYWEIGHTS);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Simulates the peer callbacks into java.awt for painting of
|
|
* lightweight Components.
|
|
* @param g the graphics context to use for painting
|
|
* @see #paintAll
|
|
*/
|
|
void lightweightPaint(Graphics g) {
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Paints all the heavyweight subcomponents.
|
|
*/
|
|
void paintHeavyweightComponents(Graphics g) {
|
|
}
|
|
|
|
/**
|
|
* Repaints this component.
|
|
* <p>
|
|
* If this component is a lightweight component, this method
|
|
* causes a call to this component's <code>paint</code>
|
|
* method as soon as possible. Otherwise, this method causes
|
|
* a call to this component's <code>update</code> method as soon
|
|
* as possible.
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
|
|
*
|
|
* @see #update(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void repaint() {
|
|
repaint(0, 0, 0, width, height);
|
|
}
|
|
|
|
/**
|
|
* Repaints the component. If this component is a lightweight
|
|
* component, this results in a call to <code>paint</code>
|
|
* within <code>tm</code> milliseconds.
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
*
|
|
* @param tm maximum time in milliseconds before update
|
|
* @see #paint
|
|
* @see #update(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void repaint(long tm) {
|
|
repaint(tm, 0, 0, width, height);
|
|
}
|
|
|
|
/**
|
|
* Repaints the specified rectangle of this component.
|
|
* <p>
|
|
* If this component is a lightweight component, this method
|
|
* causes a call to this component's <code>paint</code> method
|
|
* as soon as possible. Otherwise, this method causes a call to
|
|
* this component's <code>update</code> method as soon as possible.
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
*
|
|
* @param x the <i>x</i> coordinate
|
|
* @param y the <i>y</i> coordinate
|
|
* @param width the width
|
|
* @param height the height
|
|
* @see #update(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void repaint(int x, int y, int width, int height) {
|
|
repaint(0, x, y, width, height);
|
|
}
|
|
|
|
/**
|
|
* Repaints the specified rectangle of this component within
|
|
* <code>tm</code> milliseconds.
|
|
* <p>
|
|
* If this component is a lightweight component, this method causes
|
|
* a call to this component's <code>paint</code> method.
|
|
* Otherwise, this method causes a call to this component's
|
|
* <code>update</code> method.
|
|
* <p>
|
|
* <b>Note</b>: For more information on the paint mechanisms utilitized
|
|
* by AWT and Swing, including information on how to write the most
|
|
* efficient painting code, see
|
|
* <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
|
|
*
|
|
* @param tm maximum time in milliseconds before update
|
|
* @param x the <i>x</i> coordinate
|
|
* @param y the <i>y</i> coordinate
|
|
* @param width the width
|
|
* @param height the height
|
|
* @see #update(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void repaint(long tm, int x, int y, int width, int height) {
|
|
if (this.peer instanceof LightweightPeer) {
|
|
// Needs to be translated to parent coordinates since
|
|
// a parent native container provides the actual repaint
|
|
// services. Additionally, the request is restricted to
|
|
// the bounds of the component.
|
|
if (parent != null) {
|
|
if (x < 0) {
|
|
width += x;
|
|
x = 0;
|
|
}
|
|
if (y < 0) {
|
|
height += y;
|
|
y = 0;
|
|
}
|
|
|
|
int pwidth = (width > this.width) ? this.width : width;
|
|
int pheight = (height > this.height) ? this.height : height;
|
|
|
|
if (pwidth <= 0 || pheight <= 0) {
|
|
return;
|
|
}
|
|
|
|
int px = this.x + x;
|
|
int py = this.y + y;
|
|
parent.repaint(tm, px, py, pwidth, pheight);
|
|
}
|
|
} else {
|
|
if (isVisible() && (this.peer != null) &&
|
|
(width > 0) && (height > 0)) {
|
|
PaintEvent e = new PaintEvent(this, PaintEvent.UPDATE,
|
|
new Rectangle(x, y, width, height));
|
|
SunToolkit.postEvent(SunToolkit.targetToAppContext(this), e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prints this component. Applications should override this method
|
|
* for components that must do special processing before being
|
|
* printed or should be printed differently than they are painted.
|
|
* <p>
|
|
* The default implementation of this method calls the
|
|
* <code>paint</code> method.
|
|
* <p>
|
|
* The origin of the graphics context, its
|
|
* (<code>0</code>, <code>0</code>) coordinate point, is the
|
|
* top-left corner of this component. The clipping region of the
|
|
* graphics context is the bounding rectangle of this component.
|
|
* @param g the graphics context to use for printing
|
|
* @see #paint(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void print(Graphics g) {
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Prints this component and all of its subcomponents.
|
|
* <p>
|
|
* The origin of the graphics context, its
|
|
* (<code>0</code>, <code>0</code>) coordinate point, is the
|
|
* top-left corner of this component. The clipping region of the
|
|
* graphics context is the bounding rectangle of this component.
|
|
* @param g the graphics context to use for printing
|
|
* @see #print(Graphics)
|
|
* @since JDK1.0
|
|
*/
|
|
public void printAll(Graphics g) {
|
|
if (isShowing()) {
|
|
GraphicsCallback.PeerPrintCallback.getInstance().
|
|
runOneComponent(this, new Rectangle(0, 0, width, height),
|
|
g, g.getClip(),
|
|
GraphicsCallback.LIGHTWEIGHTS |
|
|
GraphicsCallback.HEAVYWEIGHTS);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Simulates the peer callbacks into java.awt for printing of
|
|
* lightweight Components.
|
|
* @param g the graphics context to use for printing
|
|
* @see #printAll
|
|
*/
|
|
void lightweightPrint(Graphics g) {
|
|
print(g);
|
|
}
|
|
|
|
/**
|
|
* Prints all the heavyweight subcomponents.
|
|
*/
|
|
void printHeavyweightComponents(Graphics g) {
|
|
}
|
|
|
|
private Insets getInsets_NoClientCode() {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof ContainerPeer) {
|
|
return (Insets)((ContainerPeer)peer).getInsets().clone();
|
|
}
|
|
return new Insets(0, 0, 0, 0);
|
|
}
|
|
|
|
/**
|
|
* Repaints the component when the image has changed.
|
|
* This <code>imageUpdate</code> method of an <code>ImageObserver</code>
|
|
* is called when more information about an
|
|
* image which had been previously requested using an asynchronous
|
|
* routine such as the <code>drawImage</code> method of
|
|
* <code>Graphics</code> becomes available.
|
|
* See the definition of <code>imageUpdate</code> for
|
|
* more information on this method and its arguments.
|
|
* <p>
|
|
* The <code>imageUpdate</code> method of <code>Component</code>
|
|
* incrementally draws an image on the component as more of the bits
|
|
* of the image are available.
|
|
* <p>
|
|
* If the system property <code>awt.image.incrementaldraw</code>
|
|
* is missing or has the value <code>true</code>, the image is
|
|
* incrementally drawn. If the system property has any other value,
|
|
* then the image is not drawn until it has been completely loaded.
|
|
* <p>
|
|
* Also, if incremental drawing is in effect, the value of the
|
|
* system property <code>awt.image.redrawrate</code> is interpreted
|
|
* as an integer to give the maximum redraw rate, in milliseconds. If
|
|
* the system property is missing or cannot be interpreted as an
|
|
* integer, the redraw rate is once every 100ms.
|
|
* <p>
|
|
* The interpretation of the <code>x</code>, <code>y</code>,
|
|
* <code>width</code>, and <code>height</code> arguments depends on
|
|
* the value of the <code>infoflags</code> argument.
|
|
*
|
|
* @param img the image being observed
|
|
* @param infoflags see <code>imageUpdate</code> for more information
|
|
* @param x the <i>x</i> coordinate
|
|
* @param y the <i>y</i> coordinate
|
|
* @param w the width
|
|
* @param h the height
|
|
* @return <code>false</code> if the infoflags indicate that the
|
|
* image is completely loaded; <code>true</code> otherwise.
|
|
*
|
|
* @see java.awt.image.ImageObserver
|
|
* @see Graphics#drawImage(Image, int, int, Color, java.awt.image.ImageObserver)
|
|
* @see Graphics#drawImage(Image, int, int, java.awt.image.ImageObserver)
|
|
* @see Graphics#drawImage(Image, int, int, int, int, Color, java.awt.image.ImageObserver)
|
|
* @see Graphics#drawImage(Image, int, int, int, int, java.awt.image.ImageObserver)
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean imageUpdate(Image img, int infoflags,
|
|
int x, int y, int w, int h) {
|
|
int rate = -1;
|
|
if ((infoflags & (FRAMEBITS|ALLBITS)) != 0) {
|
|
rate = 0;
|
|
} else if ((infoflags & SOMEBITS) != 0) {
|
|
if (isInc) {
|
|
rate = incRate;
|
|
if (rate < 0) {
|
|
rate = 0;
|
|
}
|
|
}
|
|
}
|
|
if (rate >= 0) {
|
|
repaint(rate, 0, 0, width, height);
|
|
}
|
|
return (infoflags & (ALLBITS|ABORT)) == 0;
|
|
}
|
|
|
|
/**
|
|
* Creates an image from the specified image producer.
|
|
* @param producer the image producer
|
|
* @return the image produced
|
|
* @since JDK1.0
|
|
*/
|
|
public Image createImage(ImageProducer producer) {
|
|
ComponentPeer peer = this.peer;
|
|
if ((peer != null) && ! (peer instanceof LightweightPeer)) {
|
|
return peer.createImage(producer);
|
|
}
|
|
return getToolkit().createImage(producer);
|
|
}
|
|
|
|
/**
|
|
* Creates an off-screen drawable image
|
|
* to be used for double buffering.
|
|
* @param width the specified width
|
|
* @param height the specified height
|
|
* @return an off-screen drawable image, which can be used for double
|
|
* buffering. The return value may be <code>null</code> if the
|
|
* component is not displayable. This will always happen if
|
|
* <code>GraphicsEnvironment.isHeadless()</code> returns
|
|
* <code>true</code>.
|
|
* @see #isDisplayable
|
|
* @see GraphicsEnvironment#isHeadless
|
|
* @since JDK1.0
|
|
*/
|
|
public Image createImage(int width, int height) {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof LightweightPeer) {
|
|
if (parent != null) { return parent.createImage(width, height); }
|
|
else { return null;}
|
|
} else {
|
|
return (peer != null) ? peer.createImage(width, height) : null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a volatile off-screen drawable image
|
|
* to be used for double buffering.
|
|
* @param width the specified width.
|
|
* @param height the specified height.
|
|
* @return an off-screen drawable image, which can be used for double
|
|
* buffering. The return value may be <code>null</code> if the
|
|
* component is not displayable. This will always happen if
|
|
* <code>GraphicsEnvironment.isHeadless()</code> returns
|
|
* <code>true</code>.
|
|
* @see java.awt.image.VolatileImage
|
|
* @see #isDisplayable
|
|
* @see GraphicsEnvironment#isHeadless
|
|
* @since 1.4
|
|
*/
|
|
public VolatileImage createVolatileImage(int width, int height) {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof LightweightPeer) {
|
|
if (parent != null) {
|
|
return parent.createVolatileImage(width, height);
|
|
}
|
|
else { return null;}
|
|
} else {
|
|
return (peer != null) ?
|
|
peer.createVolatileImage(width, height) : null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a volatile off-screen drawable image, with the given capabilities.
|
|
* The contents of this image may be lost at any time due
|
|
* to operating system issues, so the image must be managed
|
|
* via the <code>VolatileImage</code> interface.
|
|
* @param width the specified width.
|
|
* @param height the specified height.
|
|
* @param caps the image capabilities
|
|
* @exception AWTException if an image with the specified capabilities cannot
|
|
* be created
|
|
* @return a VolatileImage object, which can be used
|
|
* to manage surface contents loss and capabilities.
|
|
* @see java.awt.image.VolatileImage
|
|
* @since 1.4
|
|
*/
|
|
public VolatileImage createVolatileImage(int width, int height,
|
|
ImageCapabilities caps) throws AWTException {
|
|
// REMIND : check caps
|
|
return createVolatileImage(width, height);
|
|
}
|
|
|
|
/**
|
|
* Prepares an image for rendering on this component. The image
|
|
* data is downloaded asynchronously in another thread and the
|
|
* appropriate screen representation of the image is generated.
|
|
* @param image the <code>Image</code> for which to
|
|
* prepare a screen representation
|
|
* @param observer the <code>ImageObserver</code> object
|
|
* to be notified as the image is being prepared
|
|
* @return <code>true</code> if the image has already been fully
|
|
* prepared; <code>false</code> otherwise
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean prepareImage(Image image, ImageObserver observer) {
|
|
return prepareImage(image, -1, -1, observer);
|
|
}
|
|
|
|
/**
|
|
* Prepares an image for rendering on this component at the
|
|
* specified width and height.
|
|
* <p>
|
|
* The image data is downloaded asynchronously in another thread,
|
|
* and an appropriately scaled screen representation of the image is
|
|
* generated.
|
|
* @param image the instance of <code>Image</code>
|
|
* for which to prepare a screen representation
|
|
* @param width the width of the desired screen representation
|
|
* @param height the height of the desired screen representation
|
|
* @param observer the <code>ImageObserver</code> object
|
|
* to be notified as the image is being prepared
|
|
* @return <code>true</code> if the image has already been fully
|
|
* prepared; <code>false</code> otherwise
|
|
* @see java.awt.image.ImageObserver
|
|
* @since JDK1.0
|
|
*/
|
|
public boolean prepareImage(Image image, int width, int height,
|
|
ImageObserver observer) {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof LightweightPeer) {
|
|
return (parent != null)
|
|
? parent.prepareImage(image, width, height, observer)
|
|
: getToolkit().prepareImage(image, width, height, observer);
|
|
} else {
|
|
return (peer != null)
|
|
? peer.prepareImage(image, width, height, observer)
|
|
: getToolkit().prepareImage(image, width, height, observer);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the status of the construction of a screen representation
|
|
* of the specified image.
|
|
* <p>
|
|
* This method does not cause the image to begin loading. An
|
|
* application must use the <code>prepareImage</code> method
|
|
* to force the loading of an image.
|
|
* <p>
|
|
* Information on the flags returned by this method can be found
|
|
* with the discussion of the <code>ImageObserver</code> interface.
|
|
* @param image the <code>Image</code> object whose status
|
|
* is being checked
|
|
* @param observer the <code>ImageObserver</code>
|
|
* object to be notified as the image is being prepared
|
|
* @return the bitwise inclusive <b>OR</b> of
|
|
* <code>ImageObserver</code> flags indicating what
|
|
* information about the image is currently available
|
|
* @see #prepareImage(Image, int, int, java.awt.image.ImageObserver)
|
|
* @see Toolkit#checkImage(Image, int, int, java.awt.image.ImageObserver)
|
|
* @see java.awt.image.ImageObserver
|
|
* @since JDK1.0
|
|
*/
|
|
public int checkImage(Image image, ImageObserver observer) {
|
|
return checkImage(image, -1, -1, observer);
|
|
}
|
|
|
|
/**
|
|
* Returns the status of the construction of a screen representation
|
|
* of the specified image.
|
|
* <p>
|
|
* This method does not cause the image to begin loading. An
|
|
* application must use the <code>prepareImage</code> method
|
|
* to force the loading of an image.
|
|
* <p>
|
|
* The <code>checkImage</code> method of <code>Component</code>
|
|
* calls its peer's <code>checkImage</code> method to calculate
|
|
* the flags. If this component does not yet have a peer, the
|
|
* component's toolkit's <code>checkImage</code> method is called
|
|
* instead.
|
|
* <p>
|
|
* Information on the flags returned by this method can be found
|
|
* with the discussion of the <code>ImageObserver</code> interface.
|
|
* @param image the <code>Image</code> object whose status
|
|
* is being checked
|
|
* @param width the width of the scaled version
|
|
* whose status is to be checked
|
|
* @param height the height of the scaled version
|
|
* whose status is to be checked
|
|
* @param observer the <code>ImageObserver</code> object
|
|
* to be notified as the image is being prepared
|
|
* @return the bitwise inclusive <b>OR</b> of
|
|
* <code>ImageObserver</code> flags indicating what
|
|
* information about the image is currently available
|
|
* @see #prepareImage(Image, int, int, java.awt.image.ImageObserver)
|
|
* @see Toolkit#checkImage(Image, int, int, java.awt.image.ImageObserver)
|
|
* @see java.awt.image.ImageObserver
|
|
* @since JDK1.0
|
|
*/
|
|
public int checkImage(Image image, int width, int height,
|
|
ImageObserver observer) {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer instanceof LightweightPeer) {
|
|
return (parent != null)
|
|
? parent.checkImage(image, width, height, observer)
|
|
: getToolkit().checkImage(image, width, height, observer);
|
|
} else {
|
|
return (peer != null)
|
|
? peer.checkImage(image, width, height, observer)
|
|
: getToolkit().checkImage(image, width, height, observer);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a new strategy for multi-buffering on this component.
|
|
* Multi-buffering is useful for rendering performance. This method
|
|
* attempts to create the best strategy available with the number of
|
|
* buffers supplied. It will always create a <code>BufferStrategy</code>
|
|
* with that number of buffers.
|
|
* A page-flipping strategy is attempted first, then a blitting strategy
|
|
* using accelerated buffers. Finally, an unaccelerated blitting
|
|
* strategy is used.
|
|
* <p>
|
|
* Each time this method is called,
|
|
* the existing buffer strategy for this component is discarded.
|
|
* @param numBuffers number of buffers to create, including the front buffer
|
|
* @exception IllegalArgumentException if numBuffers is less than 1.
|
|
* @exception IllegalStateException if the component is not displayable
|
|
* @see #isDisplayable
|
|
* @see Window#getBufferStrategy()
|
|
* @see Canvas#getBufferStrategy()
|
|
* @since 1.4
|
|
*/
|
|
void createBufferStrategy(int numBuffers) {
|
|
BufferCapabilities bufferCaps;
|
|
if (numBuffers > 1) {
|
|
// Try to create a page-flipping strategy
|
|
bufferCaps = new BufferCapabilities(new ImageCapabilities(true),
|
|
new ImageCapabilities(true),
|
|
BufferCapabilities.FlipContents.UNDEFINED);
|
|
try {
|
|
createBufferStrategy(numBuffers, bufferCaps);
|
|
return; // Success
|
|
} catch (AWTException e) {
|
|
// Failed
|
|
}
|
|
}
|
|
// Try a blitting (but still accelerated) strategy
|
|
bufferCaps = new BufferCapabilities(new ImageCapabilities(true),
|
|
new ImageCapabilities(true),
|
|
null);
|
|
try {
|
|
createBufferStrategy(numBuffers, bufferCaps);
|
|
return; // Success
|
|
} catch (AWTException e) {
|
|
// Failed
|
|
}
|
|
// Try an unaccelerated blitting strategy
|
|
bufferCaps = new BufferCapabilities(new ImageCapabilities(false),
|
|
new ImageCapabilities(false),
|
|
null);
|
|
try {
|
|
createBufferStrategy(numBuffers, bufferCaps);
|
|
return; // Success
|
|
} catch (AWTException e) {
|
|
// Code should never reach here (an unaccelerated blitting
|
|
// strategy should always work)
|
|
throw new InternalError("Could not create a buffer strategy", e);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a new strategy for multi-buffering on this component with the
|
|
* required buffer capabilities. This is useful, for example, if only
|
|
* accelerated memory or page flipping is desired (as specified by the
|
|
* buffer capabilities).
|
|
* <p>
|
|
* Each time this method
|
|
* is called, <code>dispose</code> will be invoked on the existing
|
|
* <code>BufferStrategy</code>.
|
|
* @param numBuffers number of buffers to create
|
|
* @param caps the required capabilities for creating the buffer strategy;
|
|
* cannot be <code>null</code>
|
|
* @exception AWTException if the capabilities supplied could not be
|
|
* supported or met; this may happen, for example, if there is not enough
|
|
* accelerated memory currently available, or if page flipping is specified
|
|
* but not possible.
|
|
* @exception IllegalArgumentException if numBuffers is less than 1, or if
|
|
* caps is <code>null</code>
|
|
* @see Window#getBufferStrategy()
|
|
* @see Canvas#getBufferStrategy()
|
|
* @since 1.4
|
|
*/
|
|
void createBufferStrategy(int numBuffers,
|
|
BufferCapabilities caps) throws AWTException {
|
|
// Check arguments
|
|
if (numBuffers < 1) {
|
|
throw new IllegalArgumentException(
|
|
"Number of buffers must be at least 1");
|
|
}
|
|
if (caps == null) {
|
|
throw new IllegalArgumentException("No capabilities specified");
|
|
}
|
|
// Destroy old buffers
|
|
if (bufferStrategy != null) {
|
|
bufferStrategy.dispose();
|
|
}
|
|
if (numBuffers == 1) {
|
|
bufferStrategy = new SingleBufferStrategy(caps);
|
|
} else {
|
|
SunGraphicsEnvironment sge = (SunGraphicsEnvironment)
|
|
GraphicsEnvironment.getLocalGraphicsEnvironment();
|
|
if (!caps.isPageFlipping() && sge.isFlipStrategyPreferred(peer)) {
|
|
caps = new ProxyCapabilities(caps);
|
|
}
|
|
// assert numBuffers > 1;
|
|
if (caps.isPageFlipping()) {
|
|
bufferStrategy = new FlipSubRegionBufferStrategy(numBuffers, caps);
|
|
} else {
|
|
bufferStrategy = new BltSubRegionBufferStrategy(numBuffers, caps);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is a proxy capabilities class used when a FlipBufferStrategy
|
|
* is created instead of the requested Blit strategy.
|
|
*
|
|
* @see sun.java2d.SunGraphicsEnvironment#isFlipStrategyPreferred(ComponentPeer)
|
|
*/
|
|
private class ProxyCapabilities extends ExtendedBufferCapabilities {
|
|
private BufferCapabilities orig;
|
|
private ProxyCapabilities(BufferCapabilities orig) {
|
|
super(orig.getFrontBufferCapabilities(),
|
|
orig.getBackBufferCapabilities(),
|
|
orig.getFlipContents() ==
|
|
BufferCapabilities.FlipContents.BACKGROUND ?
|
|
BufferCapabilities.FlipContents.BACKGROUND :
|
|
BufferCapabilities.FlipContents.COPIED);
|
|
this.orig = orig;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return the buffer strategy used by this component
|
|
* @see Window#createBufferStrategy
|
|
* @see Canvas#createBufferStrategy
|
|
* @since 1.4
|
|
*/
|
|
BufferStrategy getBufferStrategy() {
|
|
return bufferStrategy;
|
|
}
|
|
|
|
/**
|
|
* @return the back buffer currently used by this component's
|
|
* BufferStrategy. If there is no BufferStrategy or no
|
|
* back buffer, this method returns null.
|
|
*/
|
|
Image getBackBuffer() {
|
|
if (bufferStrategy != null) {
|
|
if (bufferStrategy instanceof BltBufferStrategy) {
|
|
BltBufferStrategy bltBS = (BltBufferStrategy)bufferStrategy;
|
|
return bltBS.getBackBuffer();
|
|
} else if (bufferStrategy instanceof FlipBufferStrategy) {
|
|
FlipBufferStrategy flipBS = (FlipBufferStrategy)bufferStrategy;
|
|
return flipBS.getBackBuffer();
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Inner class for flipping buffers on a component. That component must
|
|
* be a <code>Canvas</code> or <code>Window</code>.
|
|
* @see Canvas
|
|
* @see Window
|
|
* @see java.awt.image.BufferStrategy
|
|
* @author Michael Martak
|
|
* @since 1.4
|
|
*/
|
|
protected class FlipBufferStrategy extends BufferStrategy {
|
|
/**
|
|
* The number of buffers
|
|
*/
|
|
protected int numBuffers; // = 0
|
|
/**
|
|
* The buffering capabilities
|
|
*/
|
|
protected BufferCapabilities caps; // = null
|
|
/**
|
|
* The drawing buffer
|
|
*/
|
|
protected Image drawBuffer; // = null
|
|
/**
|
|
* The drawing buffer as a volatile image
|
|
*/
|
|
protected VolatileImage drawVBuffer; // = null
|
|
/**
|
|
* Whether or not the drawing buffer has been recently restored from
|
|
* a lost state.
|
|
*/
|
|
protected boolean validatedContents; // = false
|
|
/**
|
|
* Size of the back buffers. (Note: these fields were added in 6.0
|
|
* but kept package-private to avoid exposing them in the spec.
|
|
* None of these fields/methods really should have been marked
|
|
* protected when they were introduced in 1.4, but now we just have
|
|
* to live with that decision.)
|
|
*/
|
|
int width;
|
|
int height;
|
|
|
|
/**
|
|
* Creates a new flipping buffer strategy for this component.
|
|
* The component must be a <code>Canvas</code> or <code>Window</code>.
|
|
* @see Canvas
|
|
* @see Window
|
|
* @param numBuffers the number of buffers
|
|
* @param caps the capabilities of the buffers
|
|
* @exception AWTException if the capabilities supplied could not be
|
|
* supported or met
|
|
* @exception ClassCastException if the component is not a canvas or
|
|
* window.
|
|
* @exception IllegalStateException if the component has no peer
|
|
* @exception IllegalArgumentException if {@code numBuffers} is less than two,
|
|
* or if {@code BufferCapabilities.isPageFlipping} is not
|
|
* {@code true}.
|
|
* @see #createBuffers(int, BufferCapabilities)
|
|
*/
|
|
protected FlipBufferStrategy(int numBuffers, BufferCapabilities caps)
|
|
throws AWTException
|
|
{
|
|
if (!(Component.this instanceof Window) &&
|
|
!(Component.this instanceof Canvas))
|
|
{
|
|
throw new ClassCastException(
|
|
"Component must be a Canvas or Window");
|
|
}
|
|
this.numBuffers = numBuffers;
|
|
this.caps = caps;
|
|
createBuffers(numBuffers, caps);
|
|
}
|
|
|
|
/**
|
|
* Creates one or more complex, flipping buffers with the given
|
|
* capabilities.
|
|
* @param numBuffers number of buffers to create; must be greater than
|
|
* one
|
|
* @param caps the capabilities of the buffers.
|
|
* <code>BufferCapabilities.isPageFlipping</code> must be
|
|
* <code>true</code>.
|
|
* @exception AWTException if the capabilities supplied could not be
|
|
* supported or met
|
|
* @exception IllegalStateException if the component has no peer
|
|
* @exception IllegalArgumentException if numBuffers is less than two,
|
|
* or if <code>BufferCapabilities.isPageFlipping</code> is not
|
|
* <code>true</code>.
|
|
* @see java.awt.BufferCapabilities#isPageFlipping()
|
|
*/
|
|
protected void createBuffers(int numBuffers, BufferCapabilities caps)
|
|
throws AWTException
|
|
{
|
|
if (numBuffers < 2) {
|
|
throw new IllegalArgumentException(
|
|
"Number of buffers cannot be less than two");
|
|
} else if (peer == null) {
|
|
throw new IllegalStateException(
|
|
"Component must have a valid peer");
|
|
} else if (caps == null || !caps.isPageFlipping()) {
|
|
throw new IllegalArgumentException(
|
|
"Page flipping capabilities must be specified");
|
|
}
|
|
|
|
// save the current bounds
|
|
width = getWidth();
|
|
height = getHeight();
|
|
|
|
if (drawBuffer != null) {
|
|
// dispose the existing backbuffers
|
|
drawBuffer = null;
|
|
drawVBuffer = null;
|
|
destroyBuffers();
|
|
// ... then recreate the backbuffers
|
|
}
|
|
|
|
if (caps instanceof ExtendedBufferCapabilities) {
|
|
ExtendedBufferCapabilities ebc =
|
|
(ExtendedBufferCapabilities)caps;
|
|
if (ebc.getVSync() == VSYNC_ON) {
|
|
// if this buffer strategy is not allowed to be v-synced,
|
|
// change the caps that we pass to the peer but keep on
|
|
// trying to create v-synced buffers;
|
|
// do not throw IAE here in case it is disallowed, see
|
|
// ExtendedBufferCapabilities for more info
|
|
if (!VSyncedBSManager.vsyncAllowed(this)) {
|
|
caps = ebc.derive(VSYNC_DEFAULT);
|
|
}
|
|
}
|
|
}
|
|
|
|
peer.createBuffers(numBuffers, caps);
|
|
updateInternalBuffers();
|
|
}
|
|
|
|
/**
|
|
* Updates internal buffers (both volatile and non-volatile)
|
|
* by requesting the back-buffer from the peer.
|
|
*/
|
|
private void updateInternalBuffers() {
|
|
// get the images associated with the draw buffer
|
|
drawBuffer = getBackBuffer();
|
|
if (drawBuffer instanceof VolatileImage) {
|
|
drawVBuffer = (VolatileImage)drawBuffer;
|
|
} else {
|
|
drawVBuffer = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return direct access to the back buffer, as an image.
|
|
* @exception IllegalStateException if the buffers have not yet
|
|
* been created
|
|
*/
|
|
protected Image getBackBuffer() {
|
|
if (peer != null) {
|
|
return peer.getBackBuffer();
|
|
} else {
|
|
throw new IllegalStateException(
|
|
"Component must have a valid peer");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Flipping moves the contents of the back buffer to the front buffer,
|
|
* either by copying or by moving the video pointer.
|
|
* @param flipAction an integer value describing the flipping action
|
|
* for the contents of the back buffer. This should be one of the
|
|
* values of the <code>BufferCapabilities.FlipContents</code>
|
|
* property.
|
|
* @exception IllegalStateException if the buffers have not yet
|
|
* been created
|
|
* @see java.awt.BufferCapabilities#getFlipContents()
|
|
*/
|
|
protected void flip(BufferCapabilities.FlipContents flipAction) {
|
|
if (peer != null) {
|
|
Image backBuffer = getBackBuffer();
|
|
if (backBuffer != null) {
|
|
peer.flip(0, 0,
|
|
backBuffer.getWidth(null),
|
|
backBuffer.getHeight(null), flipAction);
|
|
}
|
|
} else {
|
|
throw new IllegalStateException(
|
|
"Component must have a valid peer");
|
|
}
|
|
}
|
|
|
|
void flipSubRegion(int x1, int y1, int x2, int y2,
|
|
BufferCapabilities.FlipContents flipAction)
|
|
{
|
|
if (peer != null) {
|
|
peer.flip(x1, y1, x2, y2, flipAction);
|
|
} else {
|
|
throw new IllegalStateException(
|
|
"Component must have a valid peer");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Destroys the buffers created through this object
|
|
*/
|
|
protected void destroyBuffers() {
|
|
VSyncedBSManager.releaseVsync(this);
|
|
if (peer != null) {
|
|
peer.destroyBuffers();
|
|
} else {
|
|
throw new IllegalStateException(
|
|
"Component must have a valid peer");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return the buffering capabilities of this strategy
|
|
*/
|
|
public BufferCapabilities getCapabilities() {
|
|
if (caps instanceof ProxyCapabilities) {
|
|
return ((ProxyCapabilities)caps).orig;
|
|
} else {
|
|
return caps;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return the graphics on the drawing buffer. This method may not
|
|
* be synchronized for performance reasons; use of this method by multiple
|
|
* threads should be handled at the application level. Disposal of the
|
|
* graphics object must be handled by the application.
|
|
*/
|
|
public Graphics getDrawGraphics() {
|
|
revalidate();
|
|
return drawBuffer.getGraphics();
|
|
}
|
|
|
|
/**
|
|
* Restore the drawing buffer if it has been lost
|
|
*/
|
|
protected void revalidate() {
|
|
revalidate(true);
|
|
}
|
|
|
|
void revalidate(boolean checkSize) {
|
|
validatedContents = false;
|
|
|
|
if (checkSize && (getWidth() != width || getHeight() != height)) {
|
|
// component has been resized; recreate the backbuffers
|
|
try {
|
|
createBuffers(numBuffers, caps);
|
|
} catch (AWTException e) {
|
|
// shouldn't be possible
|
|
}
|
|
validatedContents = true;
|
|
}
|
|
|
|
// get the buffers from the peer every time since they
|
|
// might have been replaced in response to a display change event
|
|
updateInternalBuffers();
|
|
|
|
// now validate the backbuffer
|
|
if (drawVBuffer != null) {
|
|
GraphicsConfiguration gc =
|
|
getGraphicsConfiguration_NoClientCode();
|
|
int returnCode = drawVBuffer.validate(gc);
|
|
if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) {
|
|
try {
|
|
createBuffers(numBuffers, caps);
|
|
} catch (AWTException e) {
|
|
// shouldn't be possible
|
|
}
|
|
if (drawVBuffer != null) {
|
|
// backbuffers were recreated, so validate again
|
|
drawVBuffer.validate(gc);
|
|
}
|
|
validatedContents = true;
|
|
} else if (returnCode == VolatileImage.IMAGE_RESTORED) {
|
|
validatedContents = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return whether the drawing buffer was lost since the last call to
|
|
* <code>getDrawGraphics</code>
|
|
*/
|
|
public boolean contentsLost() {
|
|
if (drawVBuffer == null) {
|
|
return false;
|
|
}
|
|
return drawVBuffer.contentsLost();
|
|
}
|
|
|
|
/**
|
|
* @return whether the drawing buffer was recently restored from a lost
|
|
* state and reinitialized to the default background color (white)
|
|
*/
|
|
public boolean contentsRestored() {
|
|
return validatedContents;
|
|
}
|
|
|
|
/**
|
|
* Makes the next available buffer visible by either blitting or
|
|
* flipping.
|
|
*/
|
|
public void show() {
|
|
flip(caps.getFlipContents());
|
|
}
|
|
|
|
/**
|
|
* Makes specified region of the the next available buffer visible
|
|
* by either blitting or flipping.
|
|
*/
|
|
void showSubRegion(int x1, int y1, int x2, int y2) {
|
|
flipSubRegion(x1, y1, x2, y2, caps.getFlipContents());
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
* @since 1.6
|
|
*/
|
|
public void dispose() {
|
|
if (Component.this.bufferStrategy == this) {
|
|
Component.this.bufferStrategy = null;
|
|
if (peer != null) {
|
|
destroyBuffers();
|
|
}
|
|
}
|
|
}
|
|
|
|
} // Inner class FlipBufferStrategy
|
|
|
|
/**
|
|
* Inner class for blitting offscreen surfaces to a component.
|
|
*
|
|
* @author Michael Martak
|
|
* @since 1.4
|
|
*/
|
|
protected class BltBufferStrategy extends BufferStrategy {
|
|
|
|
/**
|
|
* The buffering capabilities
|
|
*/
|
|
protected BufferCapabilities caps; // = null
|
|
/**
|
|
* The back buffers
|
|
*/
|
|
protected VolatileImage[] backBuffers; // = null
|
|
/**
|
|
* Whether or not the drawing buffer has been recently restored from
|
|
* a lost state.
|
|
*/
|
|
protected boolean validatedContents; // = false
|
|
/**
|
|
* Size of the back buffers
|
|
*/
|
|
protected int width;
|
|
protected int height;
|
|
|
|
/**
|
|
* Insets for the hosting Component. The size of the back buffer
|
|
* is constrained by these.
|
|
*/
|
|
private Insets insets;
|
|
|
|
/**
|
|
* Creates a new blt buffer strategy around a component
|
|
* @param numBuffers number of buffers to create, including the
|
|
* front buffer
|
|
* @param caps the capabilities of the buffers
|
|
*/
|
|
protected BltBufferStrategy(int numBuffers, BufferCapabilities caps) {
|
|
this.caps = caps;
|
|
createBackBuffers(numBuffers - 1);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
* @since 1.6
|
|
*/
|
|
public void dispose() {
|
|
if (backBuffers != null) {
|
|
for (int counter = backBuffers.length - 1; counter >= 0;
|
|
counter--) {
|
|
if (backBuffers[counter] != null) {
|
|
backBuffers[counter].flush();
|
|
backBuffers[counter] = null;
|
|
}
|
|
}
|
|
}
|
|
if (Component.this.bufferStrategy == this) {
|
|
Component.this.bufferStrategy = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates the back buffers
|
|
*/
|
|
protected void createBackBuffers(int numBuffers) {
|
|
if (numBuffers == 0) {
|
|
backBuffers = null;
|
|
} else {
|
|
// save the current bounds
|
|
width = getWidth();
|
|
height = getHeight();
|
|
insets = getInsets_NoClientCode();
|
|
int iWidth = width - insets.left - insets.right;
|
|
int iHeight = height - insets.top - insets.bottom;
|
|
|
|
// It is possible for the component's width and/or height
|
|
// to be 0 here. Force the size of the backbuffers to
|
|
// be > 0 so that creating the image won't fail.
|
|
iWidth = Math.max(1, iWidth);
|
|
iHeight = Math.max(1, iHeight);
|
|
if (backBuffers == null) {
|
|
backBuffers = new VolatileImage[numBuffers];
|
|
} else {
|
|
// flush any existing backbuffers
|
|
for (int i = 0; i < numBuffers; i++) {
|
|
if (backBuffers[i] != null) {
|
|
backBuffers[i].flush();
|
|
backBuffers[i] = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
// create the backbuffers
|
|
for (int i = 0; i < numBuffers; i++) {
|
|
backBuffers[i] = createVolatileImage(iWidth, iHeight);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return the buffering capabilities of this strategy
|
|
*/
|
|
public BufferCapabilities getCapabilities() {
|
|
return caps;
|
|
}
|
|
|
|
/**
|
|
* @return the draw graphics
|
|
*/
|
|
public Graphics getDrawGraphics() {
|
|
revalidate();
|
|
Image backBuffer = getBackBuffer();
|
|
if (backBuffer == null) {
|
|
return getGraphics();
|
|
}
|
|
SunGraphics2D g = (SunGraphics2D)backBuffer.getGraphics();
|
|
g.constrain(-insets.left, -insets.top,
|
|
backBuffer.getWidth(null) + insets.left,
|
|
backBuffer.getHeight(null) + insets.top);
|
|
return g;
|
|
}
|
|
|
|
/**
|
|
* @return direct access to the back buffer, as an image.
|
|
* If there is no back buffer, returns null.
|
|
*/
|
|
Image getBackBuffer() {
|
|
if (backBuffers != null) {
|
|
return backBuffers[backBuffers.length - 1];
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes the next available buffer visible.
|
|
*/
|
|
public void show() {
|
|
showSubRegion(insets.left, insets.top,
|
|
width - insets.right,
|
|
height - insets.bottom);
|
|
}
|
|
|
|
/**
|
|
* Package-private method to present a specific rectangular area
|
|
* of this buffer. This class currently shows only the entire
|
|
* buffer, by calling showSubRegion() with the full dimensions of
|
|
* the buffer. Subclasses (e.g., BltSubRegionBufferStrategy
|
|
* and FlipSubRegionBufferStrategy) may have region-specific show
|
|
* methods that call this method with actual sub regions of the
|
|
* buffer.
|
|
*/
|
|
void showSubRegion(int x1, int y1, int x2, int y2) {
|
|
if (backBuffers == null) {
|
|
return;
|
|
}
|
|
// Adjust location to be relative to client area.
|
|
x1 -= insets.left;
|
|
x2 -= insets.left;
|
|
y1 -= insets.top;
|
|
y2 -= insets.top;
|
|
Graphics g = getGraphics_NoClientCode();
|
|
if (g == null) {
|
|
// Not showing, bail
|
|
return;
|
|
}
|
|
try {
|
|
// First image copy is in terms of Frame's coordinates, need
|
|
// to translate to client area.
|
|
g.translate(insets.left, insets.top);
|
|
for (int i = 0; i < backBuffers.length; i++) {
|
|
g.drawImage(backBuffers[i],
|
|
x1, y1, x2, y2,
|
|
x1, y1, x2, y2,
|
|
null);
|
|
g.dispose();
|
|
g = null;
|
|
g = backBuffers[i].getGraphics();
|
|
}
|
|
} finally {
|
|
if (g != null) {
|
|
g.dispose();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Restore the drawing buffer if it has been lost
|
|
*/
|
|
protected void revalidate() {
|
|
revalidate(true);
|
|
}
|
|
|
|
void revalidate(boolean checkSize) {
|
|
validatedContents = false;
|
|
|
|
if (backBuffers == null) {
|
|
return;
|
|
}
|
|
|
|
if (checkSize) {
|
|
Insets insets = getInsets_NoClientCode();
|
|
if (getWidth() != width || getHeight() != height ||
|
|
!insets.equals(this.insets)) {
|
|
// component has been resized; recreate the backbuffers
|
|
createBackBuffers(backBuffers.length);
|
|
validatedContents = true;
|
|
}
|
|
}
|
|
|
|
// now validate the backbuffer
|
|
GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
|
|
int returnCode =
|
|
backBuffers[backBuffers.length - 1].validate(gc);
|
|
if (returnCode == VolatileImage.IMAGE_INCOMPATIBLE) {
|
|
if (checkSize) {
|
|
createBackBuffers(backBuffers.length);
|
|
// backbuffers were recreated, so validate again
|
|
backBuffers[backBuffers.length - 1].validate(gc);
|
|
}
|
|
// else case means we're called from Swing on the toolkit
|
|
// thread, don't recreate buffers as that'll deadlock
|
|
// (creating VolatileImages invokes getting GraphicsConfig
|
|
// which grabs treelock).
|
|
validatedContents = true;
|
|
} else if (returnCode == VolatileImage.IMAGE_RESTORED) {
|
|
validatedContents = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return whether the drawing buffer was lost since the last call to
|
|
* <code>getDrawGraphics</code>
|
|
*/
|
|
public boolean contentsLost() {
|
|
if (backBuffers == null) {
|
|
return false;
|
|
} else {
|
|
return backBuffers[backBuffers.length - 1].contentsLost();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return whether the drawing buffer was recently restored from a lost
|
|
* state and reinitialized to the default background color (white)
|
|
*/
|
|
public boolean contentsRestored() {
|
|
return validatedContents;
|
|
}
|
|
} // Inner class BltBufferStrategy
|
|
|
|
/**
|
|
* Private class to perform sub-region flipping.
|
|
*/
|
|
private class FlipSubRegionBufferStrategy extends FlipBufferStrategy
|
|
implements SubRegionShowable
|
|
{
|
|
|
|
protected FlipSubRegionBufferStrategy(int numBuffers,
|
|
BufferCapabilities caps)
|
|
throws AWTException
|
|
{
|
|
super(numBuffers, caps);
|
|
}
|
|
|
|
public void show(int x1, int y1, int x2, int y2) {
|
|
showSubRegion(x1, y1, x2, y2);
|
|
}
|
|
|
|
// This is invoked by Swing on the toolkit thread.
|
|
public boolean showIfNotLost(int x1, int y1, int x2, int y2) {
|
|
if (!contentsLost()) {
|
|
showSubRegion(x1, y1, x2, y2);
|
|
return !contentsLost();
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Private class to perform sub-region blitting. Swing will use
|
|
* this subclass via the SubRegionShowable interface in order to
|
|
* copy only the area changed during a repaint.
|
|
* See javax.swing.BufferStrategyPaintManager.
|
|
*/
|
|
private class BltSubRegionBufferStrategy extends BltBufferStrategy
|
|
implements SubRegionShowable
|
|
{
|
|
|
|
protected BltSubRegionBufferStrategy(int numBuffers,
|
|
BufferCapabilities caps)
|
|
{
|
|
super(numBuffers, caps);
|
|
}
|
|
|
|
public void show(int x1, int y1, int x2, int y2) {
|
|
showSubRegion(x1, y1, x2, y2);
|
|
}
|
|
|
|
// This method is called by Swing on the toolkit thread.
|
|
public boolean showIfNotLost(int x1, int y1, int x2, int y2) {
|
|
if (!contentsLost()) {
|
|
showSubRegion(x1, y1, x2, y2);
|
|
return !contentsLost();
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Inner class for flipping buffers on a component. That component must
|
|
* be a <code>Canvas</code> or <code>Window</code>.
|
|
* @see Canvas
|
|
* @see Window
|
|
* @see java.awt.image.BufferStrategy
|
|
* @author Michael Martak
|
|
* @since 1.4
|
|
*/
|
|
private class SingleBufferStrategy extends BufferStrategy {
|
|
|
|
private BufferCapabilities caps;
|
|
|
|
public SingleBufferStrategy(BufferCapabilities caps) {
|
|
this.caps = caps;
|
|
}
|
|
public BufferCapabilities getCapabilities() {
|
|
return caps;
|
|
}
|
|
public Graphics getDrawGraphics() {
|
|
return getGraphics();
|
|
}
|
|
public boolean contentsLost() {
|
|
return false;
|
|
}
|
|
public boolean contentsRestored() {
|
|
return false;
|
|
}
|
|
public void show() {
|
|
// Do nothing
|
|
}
|
|
} // Inner class SingleBufferStrategy
|
|
|
|
/**
|
|
* Sets whether or not paint messages received from the operating system
|
|
* should be ignored. This does not affect paint events generated in
|
|
* software by the AWT, unless they are an immediate response to an
|
|
* OS-level paint message.
|
|
* <p>
|
|
* This is useful, for example, if running under full-screen mode and
|
|
* better performance is desired, or if page-flipping is used as the
|
|
* buffer strategy.
|
|
*
|
|
* @since 1.4
|
|
* @see #getIgnoreRepaint
|
|
* @see Canvas#createBufferStrategy
|
|
* @see Window#createBufferStrategy
|
|
* @see java.awt.image.BufferStrategy
|
|
* @see GraphicsDevice#setFullScreenWindow
|
|
*/
|
|
public void setIgnoreRepaint(boolean ignoreRepaint) {
|
|
this.ignoreRepaint = ignoreRepaint;
|
|
}
|
|
|
|
/**
|
|
* @return whether or not paint messages received from the operating system
|
|
* should be ignored.
|
|
*
|
|
* @since 1.4
|
|
* @see #setIgnoreRepaint
|
|
*/
|
|
public boolean getIgnoreRepaint() {
|
|
return ignoreRepaint;
|
|
}
|
|
|
|
/**
|
|
* Checks whether this component "contains" the specified point,
|
|
* where <code>x</code> and <code>y</code> are defined to be
|
|
* relative to the coordinate system of this component.
|
|
* @param x the <i>x</i> coordinate of the point
|
|
* @param y the <i>y</i> coordinate of the point
|
|
* @see #getComponentAt(int, int)
|
|
* @since JDK1.1
|
|
*/
|
|
public boolean contains(int x, int y) {
|
|
return inside(x, y);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by contains(int, int).
|
|
*/
|
|
@Deprecated
|
|
public boolean inside(int x, int y) {
|
|
return (x >= 0) && (x < width) && (y >= 0) && (y < height);
|
|
}
|
|
|
|
/**
|
|
* Checks whether this component "contains" the specified point,
|
|
* where the point's <i>x</i> and <i>y</i> coordinates are defined
|
|
* to be relative to the coordinate system of this component.
|
|
* @param p the point
|
|
* @throws NullPointerException if {@code p} is {@code null}
|
|
* @see #getComponentAt(Point)
|
|
* @since JDK1.1
|
|
*/
|
|
public boolean contains(Point p) {
|
|
return contains(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* Determines if this component or one of its immediate
|
|
* subcomponents contains the (<i>x</i>, <i>y</i>) location,
|
|
* and if so, returns the containing component. This method only
|
|
* looks one level deep. If the point (<i>x</i>, <i>y</i>) is
|
|
* inside a subcomponent that itself has subcomponents, it does not
|
|
* go looking down the subcomponent tree.
|
|
* <p>
|
|
* The <code>locate</code> method of <code>Component</code> simply
|
|
* returns the component itself if the (<i>x</i>, <i>y</i>)
|
|
* coordinate location is inside its bounding box, and <code>null</code>
|
|
* otherwise.
|
|
* @param x the <i>x</i> coordinate
|
|
* @param y the <i>y</i> coordinate
|
|
* @return the component or subcomponent that contains the
|
|
* (<i>x</i>, <i>y</i>) location;
|
|
* <code>null</code> if the location
|
|
* is outside this component
|
|
* @see #contains(int, int)
|
|
* @since JDK1.0
|
|
*/
|
|
public Component getComponentAt(int x, int y) {
|
|
return locate(x, y);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by getComponentAt(int, int).
|
|
*/
|
|
@Deprecated
|
|
public Component locate(int x, int y) {
|
|
return contains(x, y) ? this : null;
|
|
}
|
|
|
|
/**
|
|
* Returns the component or subcomponent that contains the
|
|
* specified point.
|
|
* @param p the point
|
|
* @see java.awt.Component#contains
|
|
* @since JDK1.1
|
|
*/
|
|
public Component getComponentAt(Point p) {
|
|
return getComponentAt(p.x, p.y);
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>dispatchEvent(AWTEvent e)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void deliverEvent(Event e) {
|
|
postEvent(e);
|
|
}
|
|
|
|
/**
|
|
* Dispatches an event to this component or one of its sub components.
|
|
* Calls <code>processEvent</code> before returning for 1.1-style
|
|
* events which have been enabled for the <code>Component</code>.
|
|
* @param e the event
|
|
*/
|
|
public final void dispatchEvent(AWTEvent e) {
|
|
dispatchEventImpl(e);
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
void dispatchEventImpl(AWTEvent e) {
|
|
int id = e.getID();
|
|
|
|
// Check that this component belongs to this app-context
|
|
AppContext compContext = appContext;
|
|
if (compContext != null && !compContext.equals(AppContext.getAppContext())) {
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
eventLog.fine("Event " + e + " is being dispatched on the wrong AppContext");
|
|
}
|
|
}
|
|
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
eventLog.finest("{0}", e);
|
|
}
|
|
|
|
/*
|
|
* 0. Set timestamp and modifiers of current event.
|
|
*/
|
|
if (!(e instanceof KeyEvent)) {
|
|
// Timestamp of a key event is set later in DKFM.preDispatchKeyEvent(KeyEvent).
|
|
EventQueue.setCurrentEventAndMostRecentTime(e);
|
|
}
|
|
|
|
/*
|
|
* 1. Pre-dispatchers. Do any necessary retargeting/reordering here
|
|
* before we notify AWTEventListeners.
|
|
*/
|
|
|
|
if (e instanceof SunDropTargetEvent) {
|
|
((SunDropTargetEvent)e).dispatch();
|
|
return;
|
|
}
|
|
|
|
if (!e.focusManagerIsDispatching) {
|
|
// Invoke the private focus retargeting method which provides
|
|
// lightweight Component support
|
|
if (e.isPosted) {
|
|
e = KeyboardFocusManager.retargetFocusEvent(e);
|
|
e.isPosted = true;
|
|
}
|
|
|
|
// Now, with the event properly targeted to a lightweight
|
|
// descendant if necessary, invoke the public focus retargeting
|
|
// and dispatching function
|
|
if (KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
dispatchEvent(e))
|
|
{
|
|
return;
|
|
}
|
|
}
|
|
if ((e instanceof FocusEvent) && focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("" + e);
|
|
}
|
|
// MouseWheel may need to be retargeted here so that
|
|
// AWTEventListener sees the event go to the correct
|
|
// Component. If the MouseWheelEvent needs to go to an ancestor,
|
|
// the event is dispatched to the ancestor, and dispatching here
|
|
// stops.
|
|
if (id == MouseEvent.MOUSE_WHEEL &&
|
|
(!eventTypeEnabled(id)) &&
|
|
(peer != null && !peer.handlesWheelScrolling()) &&
|
|
(dispatchMouseWheelToAncestor((MouseWheelEvent)e)))
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* 2. Allow the Toolkit to pass this to AWTEventListeners.
|
|
*/
|
|
Toolkit toolkit = Toolkit.getDefaultToolkit();
|
|
toolkit.notifyAWTEventListeners(e);
|
|
|
|
|
|
/*
|
|
* 3. If no one has consumed a key event, allow the
|
|
* KeyboardFocusManager to process it.
|
|
*/
|
|
if (!e.isConsumed()) {
|
|
if (e instanceof java.awt.event.KeyEvent) {
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
processKeyEvent(this, (KeyEvent)e);
|
|
if (e.isConsumed()) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 4. Allow input methods to process the event
|
|
*/
|
|
if (areInputMethodsEnabled()) {
|
|
// We need to pass on InputMethodEvents since some host
|
|
// input method adapters send them through the Java
|
|
// event queue instead of directly to the component,
|
|
// and the input context also handles the Java composition window
|
|
if(((e instanceof InputMethodEvent) && !(this instanceof CompositionArea))
|
|
||
|
|
// Otherwise, we only pass on input and focus events, because
|
|
// a) input methods shouldn't know about semantic or component-level events
|
|
// b) passing on the events takes time
|
|
// c) isConsumed() is always true for semantic events.
|
|
(e instanceof InputEvent) || (e instanceof FocusEvent)) {
|
|
InputContext inputContext = getInputContext();
|
|
|
|
|
|
if (inputContext != null) {
|
|
inputContext.dispatchEvent(e);
|
|
if (e.isConsumed()) {
|
|
if ((e instanceof FocusEvent) && focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("3579: Skipping " + e);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// When non-clients get focus, we need to explicitly disable the native
|
|
// input method. The native input method is actually not disabled when
|
|
// the active/passive/peered clients loose focus.
|
|
if (id == FocusEvent.FOCUS_GAINED) {
|
|
InputContext inputContext = getInputContext();
|
|
if (inputContext != null && inputContext instanceof sun.awt.im.InputContext) {
|
|
((sun.awt.im.InputContext)inputContext).disableNativeIM();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* 5. Pre-process any special events before delivery
|
|
*/
|
|
switch(id) {
|
|
// Handling of the PAINT and UPDATE events is now done in the
|
|
// peer's handleEvent() method so the background can be cleared
|
|
// selectively for non-native components on Windows only.
|
|
// - Fred.Ecks@Eng.sun.com, 5-8-98
|
|
|
|
case KeyEvent.KEY_PRESSED:
|
|
case KeyEvent.KEY_RELEASED:
|
|
Container p = (Container)((this instanceof Container) ? this : parent);
|
|
if (p != null) {
|
|
p.preProcessKeyEvent((KeyEvent)e);
|
|
if (e.isConsumed()) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Pre-process consumed event");
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case WindowEvent.WINDOW_CLOSING:
|
|
if (toolkit instanceof WindowClosingListener) {
|
|
windowClosingException = ((WindowClosingListener)
|
|
toolkit).windowClosingNotify((WindowEvent)e);
|
|
if (checkWindowClosingException()) {
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* 6. Deliver event for normal processing
|
|
*/
|
|
if (newEventsOnly) {
|
|
// Filtering needs to really be moved to happen at a lower
|
|
// level in order to get maximum performance gain; it is
|
|
// here temporarily to ensure the API spec is honored.
|
|
//
|
|
if (eventEnabled(e)) {
|
|
processEvent(e);
|
|
}
|
|
} else if (id == MouseEvent.MOUSE_WHEEL) {
|
|
// newEventsOnly will be false for a listenerless ScrollPane, but
|
|
// MouseWheelEvents still need to be dispatched to it so scrolling
|
|
// can be done.
|
|
autoProcessMouseWheel((MouseWheelEvent)e);
|
|
} else if (!(e instanceof MouseEvent && !postsOldMouseEvents())) {
|
|
//
|
|
// backward compatibility
|
|
//
|
|
Event olde = e.convertToOld();
|
|
if (olde != null) {
|
|
int key = olde.key;
|
|
int modifiers = olde.modifiers;
|
|
|
|
postEvent(olde);
|
|
if (olde.isConsumed()) {
|
|
e.consume();
|
|
}
|
|
// if target changed key or modifier values, copy them
|
|
// back to original event
|
|
//
|
|
switch(olde.id) {
|
|
case Event.KEY_PRESS:
|
|
case Event.KEY_RELEASE:
|
|
case Event.KEY_ACTION:
|
|
case Event.KEY_ACTION_RELEASE:
|
|
if (olde.key != key) {
|
|
((KeyEvent)e).setKeyChar(olde.getKeyEventChar());
|
|
}
|
|
if (olde.modifiers != modifiers) {
|
|
((KeyEvent)e).setModifiers(olde.modifiers);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 8. Special handling for 4061116 : Hook for browser to close modal
|
|
* dialogs.
|
|
*/
|
|
if (id == WindowEvent.WINDOW_CLOSING && !e.isConsumed()) {
|
|
if (toolkit instanceof WindowClosingListener) {
|
|
windowClosingException =
|
|
((WindowClosingListener)toolkit).
|
|
windowClosingDelivered((WindowEvent)e);
|
|
if (checkWindowClosingException()) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 9. Allow the peer to process the event.
|
|
* Except KeyEvents, they will be processed by peer after
|
|
* all KeyEventPostProcessors
|
|
* (see DefaultKeyboardFocusManager.dispatchKeyEvent())
|
|
*/
|
|
if (!(e instanceof KeyEvent)) {
|
|
ComponentPeer tpeer = peer;
|
|
if (e instanceof FocusEvent && (tpeer == null || tpeer instanceof LightweightPeer)) {
|
|
// if focus owner is lightweight then its native container
|
|
// processes event
|
|
Component source = (Component)e.getSource();
|
|
if (source != null) {
|
|
Container target = source.getNativeContainer();
|
|
if (target != null) {
|
|
tpeer = target.getPeer();
|
|
}
|
|
}
|
|
}
|
|
if (tpeer != null) {
|
|
tpeer.handleEvent(e);
|
|
}
|
|
}
|
|
|
|
if (SunToolkit.isTouchKeyboardAutoShowEnabled() &&
|
|
(toolkit instanceof SunToolkit) &&
|
|
((e instanceof MouseEvent) || (e instanceof FocusEvent))) {
|
|
((SunToolkit)toolkit).showOrHideTouchKeyboard(this, e);
|
|
}
|
|
} // dispatchEventImpl()
|
|
|
|
/*
|
|
* If newEventsOnly is false, method is called so that ScrollPane can
|
|
* override it and handle common-case mouse wheel scrolling. NOP
|
|
* for Component.
|
|
*/
|
|
void autoProcessMouseWheel(MouseWheelEvent e) {}
|
|
|
|
/*
|
|
* Dispatch given MouseWheelEvent to the first ancestor for which
|
|
* MouseWheelEvents are enabled.
|
|
*
|
|
* Returns whether or not event was dispatched to an ancestor
|
|
*/
|
|
boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {
|
|
int newX, newY;
|
|
newX = e.getX() + getX(); // Coordinates take into account at least
|
|
newY = e.getY() + getY(); // the cursor's position relative to this
|
|
// Component (e.getX()), and this Component's
|
|
// position relative to its parent.
|
|
MouseWheelEvent newMWE;
|
|
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
eventLog.finest("dispatchMouseWheelToAncestor");
|
|
eventLog.finest("orig event src is of " + e.getSource().getClass());
|
|
}
|
|
|
|
/* parent field for Window refers to the owning Window.
|
|
* MouseWheelEvents should NOT be propagated into owning Windows
|
|
*/
|
|
synchronized (getTreeLock()) {
|
|
Container anc = getParent();
|
|
while (anc != null && !anc.eventEnabled(e)) {
|
|
// fix coordinates to be relative to new event source
|
|
newX += anc.getX();
|
|
newY += anc.getY();
|
|
|
|
if (!(anc instanceof Window)) {
|
|
anc = anc.getParent();
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
eventLog.finest("new event src is " + anc.getClass());
|
|
}
|
|
|
|
if (anc != null && anc.eventEnabled(e)) {
|
|
// Change event to be from new source, with new x,y
|
|
// For now, just create a new event - yucky
|
|
|
|
newMWE = new MouseWheelEvent(anc, // new source
|
|
e.getID(),
|
|
e.getWhen(),
|
|
e.getModifiers(),
|
|
newX, // x relative to new source
|
|
newY, // y relative to new source
|
|
e.getXOnScreen(),
|
|
e.getYOnScreen(),
|
|
e.getClickCount(),
|
|
e.isPopupTrigger(),
|
|
e.getScrollType(),
|
|
e.getScrollAmount(),
|
|
e.getWheelRotation(),
|
|
e.getPreciseWheelRotation());
|
|
((AWTEvent)e).copyPrivateDataInto(newMWE);
|
|
// When dispatching a wheel event to
|
|
// ancestor, there is no need trying to find descendant
|
|
// lightweights to dispatch event to.
|
|
// If we dispatch the event to toplevel ancestor,
|
|
// this could encolse the loop: 6480024.
|
|
anc.dispatchEventToSelf(newMWE);
|
|
if (newMWE.isConsumed()) {
|
|
e.consume();
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
boolean checkWindowClosingException() {
|
|
if (windowClosingException != null) {
|
|
if (this instanceof Dialog) {
|
|
((Dialog)this).interruptBlocking();
|
|
} else {
|
|
windowClosingException.fillInStackTrace();
|
|
windowClosingException.printStackTrace();
|
|
windowClosingException = null;
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
boolean areInputMethodsEnabled() {
|
|
// in 1.2, we assume input method support is required for all
|
|
// components that handle key events, but components can turn off
|
|
// input methods by calling enableInputMethods(false).
|
|
return ((eventMask & AWTEvent.INPUT_METHODS_ENABLED_MASK) != 0) &&
|
|
((eventMask & AWTEvent.KEY_EVENT_MASK) != 0 || keyListener != null);
|
|
}
|
|
|
|
// REMIND: remove when filtering is handled at lower level
|
|
boolean eventEnabled(AWTEvent e) {
|
|
return eventTypeEnabled(e.id);
|
|
}
|
|
|
|
boolean eventTypeEnabled(int type) {
|
|
switch(type) {
|
|
case ComponentEvent.COMPONENT_MOVED:
|
|
case ComponentEvent.COMPONENT_RESIZED:
|
|
case ComponentEvent.COMPONENT_SHOWN:
|
|
case ComponentEvent.COMPONENT_HIDDEN:
|
|
if ((eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 ||
|
|
componentListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case FocusEvent.FOCUS_GAINED:
|
|
case FocusEvent.FOCUS_LOST:
|
|
if ((eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 ||
|
|
focusListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case KeyEvent.KEY_PRESSED:
|
|
case KeyEvent.KEY_RELEASED:
|
|
case KeyEvent.KEY_TYPED:
|
|
if ((eventMask & AWTEvent.KEY_EVENT_MASK) != 0 ||
|
|
keyListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case MouseEvent.MOUSE_PRESSED:
|
|
case MouseEvent.MOUSE_RELEASED:
|
|
case MouseEvent.MOUSE_ENTERED:
|
|
case MouseEvent.MOUSE_EXITED:
|
|
case MouseEvent.MOUSE_CLICKED:
|
|
if ((eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 ||
|
|
mouseListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case MouseEvent.MOUSE_MOVED:
|
|
case MouseEvent.MOUSE_DRAGGED:
|
|
if ((eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 ||
|
|
mouseMotionListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case MouseEvent.MOUSE_WHEEL:
|
|
if ((eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 ||
|
|
mouseWheelListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
|
case InputMethodEvent.CARET_POSITION_CHANGED:
|
|
if ((eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 ||
|
|
inputMethodListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case HierarchyEvent.HIERARCHY_CHANGED:
|
|
if ((eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 ||
|
|
hierarchyListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
|
if ((eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 ||
|
|
hierarchyBoundsListener != null) {
|
|
return true;
|
|
}
|
|
break;
|
|
case ActionEvent.ACTION_PERFORMED:
|
|
if ((eventMask & AWTEvent.ACTION_EVENT_MASK) != 0) {
|
|
return true;
|
|
}
|
|
break;
|
|
case TextEvent.TEXT_VALUE_CHANGED:
|
|
if ((eventMask & AWTEvent.TEXT_EVENT_MASK) != 0) {
|
|
return true;
|
|
}
|
|
break;
|
|
case ItemEvent.ITEM_STATE_CHANGED:
|
|
if ((eventMask & AWTEvent.ITEM_EVENT_MASK) != 0) {
|
|
return true;
|
|
}
|
|
break;
|
|
case AdjustmentEvent.ADJUSTMENT_VALUE_CHANGED:
|
|
if ((eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0) {
|
|
return true;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
//
|
|
// Always pass on events defined by external programs.
|
|
//
|
|
if (type > AWTEvent.RESERVED_ID_MAX) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by dispatchEvent(AWTEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean postEvent(Event e) {
|
|
ComponentPeer peer = this.peer;
|
|
|
|
if (handleEvent(e)) {
|
|
e.consume();
|
|
return true;
|
|
}
|
|
|
|
Component parent = this.parent;
|
|
int eventx = e.x;
|
|
int eventy = e.y;
|
|
if (parent != null) {
|
|
e.translate(x, y);
|
|
if (parent.postEvent(e)) {
|
|
e.consume();
|
|
return true;
|
|
}
|
|
// restore coords
|
|
e.x = eventx;
|
|
e.y = eventy;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Event source interfaces
|
|
|
|
/**
|
|
* Adds the specified component listener to receive component events from
|
|
* this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the component listener
|
|
* @see java.awt.event.ComponentEvent
|
|
* @see java.awt.event.ComponentListener
|
|
* @see #removeComponentListener
|
|
* @see #getComponentListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void addComponentListener(ComponentListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
componentListener = AWTEventMulticaster.add(componentListener, l);
|
|
newEventsOnly = true;
|
|
}
|
|
|
|
/**
|
|
* Removes the specified component listener so that it no longer
|
|
* receives component events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
* @param l the component listener
|
|
* @see java.awt.event.ComponentEvent
|
|
* @see java.awt.event.ComponentListener
|
|
* @see #addComponentListener
|
|
* @see #getComponentListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void removeComponentListener(ComponentListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
componentListener = AWTEventMulticaster.remove(componentListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the component listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all <code>ComponentListener</code>s of this component
|
|
* or an empty array if no component
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addComponentListener
|
|
* @see #removeComponentListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized ComponentListener[] getComponentListeners() {
|
|
return getListeners(ComponentListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified focus listener to receive focus events from
|
|
* this component when this component gains input focus.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the focus listener
|
|
* @see java.awt.event.FocusEvent
|
|
* @see java.awt.event.FocusListener
|
|
* @see #removeFocusListener
|
|
* @see #getFocusListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void addFocusListener(FocusListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
focusListener = AWTEventMulticaster.add(focusListener, l);
|
|
newEventsOnly = true;
|
|
|
|
// if this is a lightweight component, enable focus events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(AWTEvent.FOCUS_EVENT_MASK);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified focus listener so that it no longer
|
|
* receives focus events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the focus listener
|
|
* @see java.awt.event.FocusEvent
|
|
* @see java.awt.event.FocusListener
|
|
* @see #addFocusListener
|
|
* @see #getFocusListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void removeFocusListener(FocusListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
focusListener = AWTEventMulticaster.remove(focusListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the focus listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>FocusListener</code>s
|
|
* or an empty array if no component
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addFocusListener
|
|
* @see #removeFocusListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized FocusListener[] getFocusListeners() {
|
|
return getListeners(FocusListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified hierarchy listener to receive hierarchy changed
|
|
* events from this component when the hierarchy to which this container
|
|
* belongs changes.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the hierarchy listener
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyListener
|
|
* @see #removeHierarchyListener
|
|
* @see #getHierarchyListeners
|
|
* @since 1.3
|
|
*/
|
|
public void addHierarchyListener(HierarchyListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
boolean notifyAncestors;
|
|
synchronized (this) {
|
|
notifyAncestors =
|
|
(hierarchyListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) == 0);
|
|
hierarchyListener = AWTEventMulticaster.add(hierarchyListener, l);
|
|
notifyAncestors = (notifyAncestors && hierarchyListener != null);
|
|
newEventsOnly = true;
|
|
}
|
|
if (notifyAncestors) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(AWTEvent.HIERARCHY_EVENT_MASK,
|
|
1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified hierarchy listener so that it no longer
|
|
* receives hierarchy changed events from this component. This method
|
|
* performs no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the hierarchy listener
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyListener
|
|
* @see #addHierarchyListener
|
|
* @see #getHierarchyListeners
|
|
* @since 1.3
|
|
*/
|
|
public void removeHierarchyListener(HierarchyListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
boolean notifyAncestors;
|
|
synchronized (this) {
|
|
notifyAncestors =
|
|
(hierarchyListener != null &&
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) == 0);
|
|
hierarchyListener =
|
|
AWTEventMulticaster.remove(hierarchyListener, l);
|
|
notifyAncestors = (notifyAncestors && hierarchyListener == null);
|
|
}
|
|
if (notifyAncestors) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(AWTEvent.HIERARCHY_EVENT_MASK,
|
|
-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the hierarchy listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>HierarchyListener</code>s
|
|
* or an empty array if no hierarchy
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addHierarchyListener
|
|
* @see #removeHierarchyListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized HierarchyListener[] getHierarchyListeners() {
|
|
return getListeners(HierarchyListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified hierarchy bounds listener to receive hierarchy
|
|
* bounds events from this component when the hierarchy to which this
|
|
* container belongs changes.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the hierarchy bounds listener
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyBoundsListener
|
|
* @see #removeHierarchyBoundsListener
|
|
* @see #getHierarchyBoundsListeners
|
|
* @since 1.3
|
|
*/
|
|
public void addHierarchyBoundsListener(HierarchyBoundsListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
boolean notifyAncestors;
|
|
synchronized (this) {
|
|
notifyAncestors =
|
|
(hierarchyBoundsListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) == 0);
|
|
hierarchyBoundsListener =
|
|
AWTEventMulticaster.add(hierarchyBoundsListener, l);
|
|
notifyAncestors = (notifyAncestors &&
|
|
hierarchyBoundsListener != null);
|
|
newEventsOnly = true;
|
|
}
|
|
if (notifyAncestors) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(
|
|
AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified hierarchy bounds listener so that it no longer
|
|
* receives hierarchy bounds events from this component. This method
|
|
* performs no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the hierarchy bounds listener
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyBoundsListener
|
|
* @see #addHierarchyBoundsListener
|
|
* @see #getHierarchyBoundsListeners
|
|
* @since 1.3
|
|
*/
|
|
public void removeHierarchyBoundsListener(HierarchyBoundsListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
boolean notifyAncestors;
|
|
synchronized (this) {
|
|
notifyAncestors =
|
|
(hierarchyBoundsListener != null &&
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) == 0);
|
|
hierarchyBoundsListener =
|
|
AWTEventMulticaster.remove(hierarchyBoundsListener, l);
|
|
notifyAncestors = (notifyAncestors &&
|
|
hierarchyBoundsListener == null);
|
|
}
|
|
if (notifyAncestors) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(
|
|
AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK, -1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Should only be called while holding the tree lock
|
|
int numListening(long mask) {
|
|
// One mask or the other, but not neither or both.
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
if ((mask != AWTEvent.HIERARCHY_EVENT_MASK) &&
|
|
(mask != AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK))
|
|
{
|
|
eventLog.fine("Assertion failed");
|
|
}
|
|
}
|
|
if ((mask == AWTEvent.HIERARCHY_EVENT_MASK &&
|
|
(hierarchyListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0)) ||
|
|
(mask == AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK &&
|
|
(hierarchyBoundsListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0))) {
|
|
return 1;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
// Should only be called while holding tree lock
|
|
int countHierarchyMembers() {
|
|
return 1;
|
|
}
|
|
// Should only be called while holding the tree lock
|
|
int createHierarchyEvents(int id, Component changed,
|
|
Container changedParent, long changeFlags,
|
|
boolean enabledOnToolkit) {
|
|
switch (id) {
|
|
case HierarchyEvent.HIERARCHY_CHANGED:
|
|
if (hierarchyListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 ||
|
|
enabledOnToolkit) {
|
|
HierarchyEvent e = new HierarchyEvent(this, id, changed,
|
|
changedParent,
|
|
changeFlags);
|
|
dispatchEvent(e);
|
|
return 1;
|
|
}
|
|
break;
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
if (changeFlags != 0) {
|
|
eventLog.fine("Assertion (changeFlags == 0) failed");
|
|
}
|
|
}
|
|
if (hierarchyBoundsListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 ||
|
|
enabledOnToolkit) {
|
|
HierarchyEvent e = new HierarchyEvent(this, id, changed,
|
|
changedParent);
|
|
dispatchEvent(e);
|
|
return 1;
|
|
}
|
|
break;
|
|
default:
|
|
// assert false
|
|
if (eventLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
eventLog.fine("This code must never be reached");
|
|
}
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the hierarchy bounds listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>HierarchyBoundsListener</code>s
|
|
* or an empty array if no hierarchy bounds
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addHierarchyBoundsListener
|
|
* @see #removeHierarchyBoundsListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized HierarchyBoundsListener[] getHierarchyBoundsListeners() {
|
|
return getListeners(HierarchyBoundsListener.class);
|
|
}
|
|
|
|
/*
|
|
* Should only be called while holding the tree lock.
|
|
* It's added only for overriding in java.awt.Window
|
|
* because parent in Window is owner.
|
|
*/
|
|
void adjustListeningChildrenOnParent(long mask, int num) {
|
|
if (parent != null) {
|
|
parent.adjustListeningChildren(mask, num);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds the specified key listener to receive key events from
|
|
* this component.
|
|
* If l is null, no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the key listener.
|
|
* @see java.awt.event.KeyEvent
|
|
* @see java.awt.event.KeyListener
|
|
* @see #removeKeyListener
|
|
* @see #getKeyListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void addKeyListener(KeyListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
keyListener = AWTEventMulticaster.add(keyListener, l);
|
|
newEventsOnly = true;
|
|
|
|
// if this is a lightweight component, enable key events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(AWTEvent.KEY_EVENT_MASK);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified key listener so that it no longer
|
|
* receives key events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the key listener
|
|
* @see java.awt.event.KeyEvent
|
|
* @see java.awt.event.KeyListener
|
|
* @see #addKeyListener
|
|
* @see #getKeyListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void removeKeyListener(KeyListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
keyListener = AWTEventMulticaster.remove(keyListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the key listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>KeyListener</code>s
|
|
* or an empty array if no key
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addKeyListener
|
|
* @see #removeKeyListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized KeyListener[] getKeyListeners() {
|
|
return getListeners(KeyListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified mouse listener to receive mouse events from
|
|
* this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse listener
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseListener
|
|
* @see #removeMouseListener
|
|
* @see #getMouseListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void addMouseListener(MouseListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseListener = AWTEventMulticaster.add(mouseListener,l);
|
|
newEventsOnly = true;
|
|
|
|
// if this is a lightweight component, enable mouse events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(AWTEvent.MOUSE_EVENT_MASK);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified mouse listener so that it no longer
|
|
* receives mouse events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse listener
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseListener
|
|
* @see #addMouseListener
|
|
* @see #getMouseListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void removeMouseListener(MouseListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseListener = AWTEventMulticaster.remove(mouseListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the mouse listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>MouseListener</code>s
|
|
* or an empty array if no mouse
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addMouseListener
|
|
* @see #removeMouseListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized MouseListener[] getMouseListeners() {
|
|
return getListeners(MouseListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified mouse motion listener to receive mouse motion
|
|
* events from this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse motion listener
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseMotionListener
|
|
* @see #removeMouseMotionListener
|
|
* @see #getMouseMotionListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void addMouseMotionListener(MouseMotionListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseMotionListener = AWTEventMulticaster.add(mouseMotionListener,l);
|
|
newEventsOnly = true;
|
|
|
|
// if this is a lightweight component, enable mouse events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(AWTEvent.MOUSE_MOTION_EVENT_MASK);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified mouse motion listener so that it no longer
|
|
* receives mouse motion events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse motion listener
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseMotionListener
|
|
* @see #addMouseMotionListener
|
|
* @see #getMouseMotionListeners
|
|
* @since JDK1.1
|
|
*/
|
|
public synchronized void removeMouseMotionListener(MouseMotionListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseMotionListener = AWTEventMulticaster.remove(mouseMotionListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the mouse motion listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>MouseMotionListener</code>s
|
|
* or an empty array if no mouse motion
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addMouseMotionListener
|
|
* @see #removeMouseMotionListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized MouseMotionListener[] getMouseMotionListeners() {
|
|
return getListeners(MouseMotionListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified mouse wheel listener to receive mouse wheel events
|
|
* from this component. Containers also receive mouse wheel events from
|
|
* sub-components.
|
|
* <p>
|
|
* For information on how mouse wheel events are dispatched, see
|
|
* the class description for {@link MouseWheelEvent}.
|
|
* <p>
|
|
* If l is <code>null</code>, no exception is thrown and no
|
|
* action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse wheel listener
|
|
* @see java.awt.event.MouseWheelEvent
|
|
* @see java.awt.event.MouseWheelListener
|
|
* @see #removeMouseWheelListener
|
|
* @see #getMouseWheelListeners
|
|
* @since 1.4
|
|
*/
|
|
public synchronized void addMouseWheelListener(MouseWheelListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseWheelListener = AWTEventMulticaster.add(mouseWheelListener,l);
|
|
newEventsOnly = true;
|
|
|
|
// if this is a lightweight component, enable mouse events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(AWTEvent.MOUSE_WHEEL_EVENT_MASK);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified mouse wheel listener so that it no longer
|
|
* receives mouse wheel events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If l is null, no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the mouse wheel listener.
|
|
* @see java.awt.event.MouseWheelEvent
|
|
* @see java.awt.event.MouseWheelListener
|
|
* @see #addMouseWheelListener
|
|
* @see #getMouseWheelListeners
|
|
* @since 1.4
|
|
*/
|
|
public synchronized void removeMouseWheelListener(MouseWheelListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
mouseWheelListener = AWTEventMulticaster.remove(mouseWheelListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the mouse wheel listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>MouseWheelListener</code>s
|
|
* or an empty array if no mouse wheel
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addMouseWheelListener
|
|
* @see #removeMouseWheelListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized MouseWheelListener[] getMouseWheelListeners() {
|
|
return getListeners(MouseWheelListener.class);
|
|
}
|
|
|
|
/**
|
|
* Adds the specified input method listener to receive
|
|
* input method events from this component. A component will
|
|
* only receive input method events from input methods
|
|
* if it also overrides <code>getInputMethodRequests</code> to return an
|
|
* <code>InputMethodRequests</code> instance.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="{@docRoot}/java/awt/doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the input method listener
|
|
* @see java.awt.event.InputMethodEvent
|
|
* @see java.awt.event.InputMethodListener
|
|
* @see #removeInputMethodListener
|
|
* @see #getInputMethodListeners
|
|
* @see #getInputMethodRequests
|
|
* @since 1.2
|
|
*/
|
|
public synchronized void addInputMethodListener(InputMethodListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
inputMethodListener = AWTEventMulticaster.add(inputMethodListener, l);
|
|
newEventsOnly = true;
|
|
}
|
|
|
|
/**
|
|
* Removes the specified input method listener so that it no longer
|
|
* receives input method events from this component. This method performs
|
|
* no function, nor does it throw an exception, if the listener
|
|
* specified by the argument was not previously added to this component.
|
|
* If listener <code>l</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
|
|
* >AWT Threading Issues</a> for details on AWT's threading model.
|
|
*
|
|
* @param l the input method listener
|
|
* @see java.awt.event.InputMethodEvent
|
|
* @see java.awt.event.InputMethodListener
|
|
* @see #addInputMethodListener
|
|
* @see #getInputMethodListeners
|
|
* @since 1.2
|
|
*/
|
|
public synchronized void removeInputMethodListener(InputMethodListener l) {
|
|
if (l == null) {
|
|
return;
|
|
}
|
|
inputMethodListener = AWTEventMulticaster.remove(inputMethodListener, l);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the input method listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>InputMethodListener</code>s
|
|
* or an empty array if no input method
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addInputMethodListener
|
|
* @see #removeInputMethodListener
|
|
* @since 1.4
|
|
*/
|
|
public synchronized InputMethodListener[] getInputMethodListeners() {
|
|
return getListeners(InputMethodListener.class);
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the objects currently registered
|
|
* as <code><em>Foo</em>Listener</code>s
|
|
* upon this <code>Component</code>.
|
|
* <code><em>Foo</em>Listener</code>s are registered using the
|
|
* <code>add<em>Foo</em>Listener</code> method.
|
|
*
|
|
* <p>
|
|
* You can specify the <code>listenerType</code> argument
|
|
* with a class literal, such as
|
|
* <code><em>Foo</em>Listener.class</code>.
|
|
* For example, you can query a
|
|
* <code>Component</code> <code>c</code>
|
|
* for its mouse listeners with the following code:
|
|
*
|
|
* <pre>MouseListener[] mls = (MouseListener[])(c.getListeners(MouseListener.class));</pre>
|
|
*
|
|
* If no such listeners exist, this method returns an empty array.
|
|
*
|
|
* @param listenerType the type of listeners requested; this parameter
|
|
* should specify an interface that descends from
|
|
* <code>java.util.EventListener</code>
|
|
* @return an array of all objects registered as
|
|
* <code><em>Foo</em>Listener</code>s on this component,
|
|
* or an empty array if no such listeners have been added
|
|
* @exception ClassCastException if <code>listenerType</code>
|
|
* doesn't specify a class or interface that implements
|
|
* <code>java.util.EventListener</code>
|
|
* @throws NullPointerException if {@code listenerType} is {@code null}
|
|
* @see #getComponentListeners
|
|
* @see #getFocusListeners
|
|
* @see #getHierarchyListeners
|
|
* @see #getHierarchyBoundsListeners
|
|
* @see #getKeyListeners
|
|
* @see #getMouseListeners
|
|
* @see #getMouseMotionListeners
|
|
* @see #getMouseWheelListeners
|
|
* @see #getInputMethodListeners
|
|
* @see #getPropertyChangeListeners
|
|
*
|
|
* @since 1.3
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
|
|
EventListener l = null;
|
|
if (listenerType == ComponentListener.class) {
|
|
l = componentListener;
|
|
} else if (listenerType == FocusListener.class) {
|
|
l = focusListener;
|
|
} else if (listenerType == HierarchyListener.class) {
|
|
l = hierarchyListener;
|
|
} else if (listenerType == HierarchyBoundsListener.class) {
|
|
l = hierarchyBoundsListener;
|
|
} else if (listenerType == KeyListener.class) {
|
|
l = keyListener;
|
|
} else if (listenerType == MouseListener.class) {
|
|
l = mouseListener;
|
|
} else if (listenerType == MouseMotionListener.class) {
|
|
l = mouseMotionListener;
|
|
} else if (listenerType == MouseWheelListener.class) {
|
|
l = mouseWheelListener;
|
|
} else if (listenerType == InputMethodListener.class) {
|
|
l = inputMethodListener;
|
|
} else if (listenerType == PropertyChangeListener.class) {
|
|
return (T[])getPropertyChangeListeners();
|
|
}
|
|
return AWTEventMulticaster.getListeners(l, listenerType);
|
|
}
|
|
|
|
/**
|
|
* Gets the input method request handler which supports
|
|
* requests from input methods for this component. A component
|
|
* that supports on-the-spot text input must override this
|
|
* method to return an <code>InputMethodRequests</code> instance.
|
|
* At the same time, it also has to handle input method events.
|
|
*
|
|
* @return the input method request handler for this component,
|
|
* <code>null</code> by default
|
|
* @see #addInputMethodListener
|
|
* @since 1.2
|
|
*/
|
|
public InputMethodRequests getInputMethodRequests() {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Gets the input context used by this component for handling
|
|
* the communication with input methods when text is entered
|
|
* in this component. By default, the input context used for
|
|
* the parent component is returned. Components may
|
|
* override this to return a private input context.
|
|
*
|
|
* @return the input context used by this component;
|
|
* <code>null</code> if no context can be determined
|
|
* @since 1.2
|
|
*/
|
|
public InputContext getInputContext() {
|
|
Container parent = this.parent;
|
|
if (parent == null) {
|
|
return null;
|
|
} else {
|
|
return parent.getInputContext();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Enables the events defined by the specified event mask parameter
|
|
* to be delivered to this component.
|
|
* <p>
|
|
* Event types are automatically enabled when a listener for
|
|
* that event type is added to the component.
|
|
* <p>
|
|
* This method only needs to be invoked by subclasses of
|
|
* <code>Component</code> which desire to have the specified event
|
|
* types delivered to <code>processEvent</code> regardless of whether
|
|
* or not a listener is registered.
|
|
* @param eventsToEnable the event mask defining the event types
|
|
* @see #processEvent
|
|
* @see #disableEvents
|
|
* @see AWTEvent
|
|
* @since JDK1.1
|
|
*/
|
|
protected final void enableEvents(long eventsToEnable) {
|
|
long notifyAncestors = 0;
|
|
synchronized (this) {
|
|
if ((eventsToEnable & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
|
|
hierarchyListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) == 0) {
|
|
notifyAncestors |= AWTEvent.HIERARCHY_EVENT_MASK;
|
|
}
|
|
if ((eventsToEnable & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 &&
|
|
hierarchyBoundsListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) == 0) {
|
|
notifyAncestors |= AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK;
|
|
}
|
|
eventMask |= eventsToEnable;
|
|
newEventsOnly = true;
|
|
}
|
|
|
|
// if this is a lightweight component, enable mouse events
|
|
// in the native container.
|
|
if (peer instanceof LightweightPeer) {
|
|
parent.proxyEnableEvents(eventMask);
|
|
}
|
|
if (notifyAncestors != 0) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(notifyAncestors, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Disables the events defined by the specified event mask parameter
|
|
* from being delivered to this component.
|
|
* @param eventsToDisable the event mask defining the event types
|
|
* @see #enableEvents
|
|
* @since JDK1.1
|
|
*/
|
|
protected final void disableEvents(long eventsToDisable) {
|
|
long notifyAncestors = 0;
|
|
synchronized (this) {
|
|
if ((eventsToDisable & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
|
|
hierarchyListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0) {
|
|
notifyAncestors |= AWTEvent.HIERARCHY_EVENT_MASK;
|
|
}
|
|
if ((eventsToDisable & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK)!=0 &&
|
|
hierarchyBoundsListener == null &&
|
|
(eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0) {
|
|
notifyAncestors |= AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK;
|
|
}
|
|
eventMask &= ~eventsToDisable;
|
|
}
|
|
if (notifyAncestors != 0) {
|
|
synchronized (getTreeLock()) {
|
|
adjustListeningChildrenOnParent(notifyAncestors, -1);
|
|
}
|
|
}
|
|
}
|
|
|
|
transient sun.awt.EventQueueItem[] eventCache;
|
|
|
|
/**
|
|
* @see #isCoalescingEnabled
|
|
* @see #checkCoalescing
|
|
*/
|
|
transient private boolean coalescingEnabled = checkCoalescing();
|
|
|
|
/**
|
|
* Weak map of known coalesceEvent overriders.
|
|
* Value indicates whether overriden.
|
|
* Bootstrap classes are not included.
|
|
*/
|
|
private static final Map<Class<?>, Boolean> coalesceMap =
|
|
new java.util.WeakHashMap<Class<?>, Boolean>();
|
|
|
|
/**
|
|
* Indicates whether this class overrides coalesceEvents.
|
|
* It is assumed that all classes that are loaded from the bootstrap
|
|
* do not.
|
|
* The boostrap class loader is assumed to be represented by null.
|
|
* We do not check that the method really overrides
|
|
* (it might be static, private or package private).
|
|
*/
|
|
private boolean checkCoalescing() {
|
|
if (getClass().getClassLoader()==null) {
|
|
return false;
|
|
}
|
|
final Class<? extends Component> clazz = getClass();
|
|
synchronized (coalesceMap) {
|
|
// Check cache.
|
|
Boolean value = coalesceMap.get(clazz);
|
|
if (value != null) {
|
|
return value;
|
|
}
|
|
|
|
// Need to check non-bootstraps.
|
|
Boolean enabled = java.security.AccessController.doPrivileged(
|
|
new java.security.PrivilegedAction<Boolean>() {
|
|
public Boolean run() {
|
|
return isCoalesceEventsOverriden(clazz);
|
|
}
|
|
}
|
|
);
|
|
coalesceMap.put(clazz, enabled);
|
|
return enabled;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parameter types of coalesceEvents(AWTEvent,AWTEVent).
|
|
*/
|
|
private static final Class[] coalesceEventsParams = {
|
|
AWTEvent.class, AWTEvent.class
|
|
};
|
|
|
|
/**
|
|
* Indicates whether a class or its superclasses override coalesceEvents.
|
|
* Must be called with lock on coalesceMap and privileged.
|
|
* @see checkCoalescing
|
|
*/
|
|
private static boolean isCoalesceEventsOverriden(Class<?> clazz) {
|
|
assert Thread.holdsLock(coalesceMap);
|
|
|
|
// First check superclass - we may not need to bother ourselves.
|
|
Class<?> superclass = clazz.getSuperclass();
|
|
if (superclass == null) {
|
|
// Only occurs on implementations that
|
|
// do not use null to represent the bootsrap class loader.
|
|
return false;
|
|
}
|
|
if (superclass.getClassLoader() != null) {
|
|
Boolean value = coalesceMap.get(superclass);
|
|
if (value == null) {
|
|
// Not done already - recurse.
|
|
if (isCoalesceEventsOverriden(superclass)) {
|
|
coalesceMap.put(superclass, true);
|
|
return true;
|
|
}
|
|
} else if (value) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
try {
|
|
// Throws if not overriden.
|
|
clazz.getDeclaredMethod(
|
|
"coalesceEvents", coalesceEventsParams
|
|
);
|
|
return true;
|
|
} catch (NoSuchMethodException e) {
|
|
// Not present in this class.
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Indicates whether coalesceEvents may do something.
|
|
*/
|
|
final boolean isCoalescingEnabled() {
|
|
return coalescingEnabled;
|
|
}
|
|
|
|
|
|
/**
|
|
* Potentially coalesce an event being posted with an existing
|
|
* event. This method is called by <code>EventQueue.postEvent</code>
|
|
* if an event with the same ID as the event to be posted is found in
|
|
* the queue (both events must have this component as their source).
|
|
* This method either returns a coalesced event which replaces
|
|
* the existing event (and the new event is then discarded), or
|
|
* <code>null</code> to indicate that no combining should be done
|
|
* (add the second event to the end of the queue). Either event
|
|
* parameter may be modified and returned, as the other one is discarded
|
|
* unless <code>null</code> is returned.
|
|
* <p>
|
|
* This implementation of <code>coalesceEvents</code> coalesces
|
|
* two event types: mouse move (and drag) events,
|
|
* and paint (and update) events.
|
|
* For mouse move events the last event is always returned, causing
|
|
* intermediate moves to be discarded. For paint events, the new
|
|
* event is coalesced into a complex <code>RepaintArea</code> in the peer.
|
|
* The new <code>AWTEvent</code> is always returned.
|
|
*
|
|
* @param existingEvent the event already on the <code>EventQueue</code>
|
|
* @param newEvent the event being posted to the
|
|
* <code>EventQueue</code>
|
|
* @return a coalesced event, or <code>null</code> indicating that no
|
|
* coalescing was done
|
|
*/
|
|
protected AWTEvent coalesceEvents(AWTEvent existingEvent,
|
|
AWTEvent newEvent) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Processes events occurring on this component. By default this
|
|
* method calls the appropriate
|
|
* <code>process<event type>Event</code>
|
|
* method for the given class of event.
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the event
|
|
* @see #processComponentEvent
|
|
* @see #processFocusEvent
|
|
* @see #processKeyEvent
|
|
* @see #processMouseEvent
|
|
* @see #processMouseMotionEvent
|
|
* @see #processInputMethodEvent
|
|
* @see #processHierarchyEvent
|
|
* @see #processMouseWheelEvent
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processEvent(AWTEvent e) {
|
|
if (e instanceof FocusEvent) {
|
|
processFocusEvent((FocusEvent)e);
|
|
|
|
} else if (e instanceof MouseEvent) {
|
|
switch(e.getID()) {
|
|
case MouseEvent.MOUSE_PRESSED:
|
|
case MouseEvent.MOUSE_RELEASED:
|
|
case MouseEvent.MOUSE_CLICKED:
|
|
case MouseEvent.MOUSE_ENTERED:
|
|
case MouseEvent.MOUSE_EXITED:
|
|
processMouseEvent((MouseEvent)e);
|
|
break;
|
|
case MouseEvent.MOUSE_MOVED:
|
|
case MouseEvent.MOUSE_DRAGGED:
|
|
processMouseMotionEvent((MouseEvent)e);
|
|
break;
|
|
case MouseEvent.MOUSE_WHEEL:
|
|
processMouseWheelEvent((MouseWheelEvent)e);
|
|
break;
|
|
}
|
|
|
|
} else if (e instanceof KeyEvent) {
|
|
processKeyEvent((KeyEvent)e);
|
|
|
|
} else if (e instanceof ComponentEvent) {
|
|
processComponentEvent((ComponentEvent)e);
|
|
} else if (e instanceof InputMethodEvent) {
|
|
processInputMethodEvent((InputMethodEvent)e);
|
|
} else if (e instanceof HierarchyEvent) {
|
|
switch (e.getID()) {
|
|
case HierarchyEvent.HIERARCHY_CHANGED:
|
|
processHierarchyEvent((HierarchyEvent)e);
|
|
break;
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
|
processHierarchyBoundsEvent((HierarchyEvent)e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes component events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>ComponentListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless component events are
|
|
* enabled for this component. Component events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>ComponentListener</code> object is registered
|
|
* via <code>addComponentListener</code>.
|
|
* <li>Component events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the component event
|
|
* @see java.awt.event.ComponentEvent
|
|
* @see java.awt.event.ComponentListener
|
|
* @see #addComponentListener
|
|
* @see #enableEvents
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processComponentEvent(ComponentEvent e) {
|
|
ComponentListener listener = componentListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case ComponentEvent.COMPONENT_RESIZED:
|
|
listener.componentResized(e);
|
|
break;
|
|
case ComponentEvent.COMPONENT_MOVED:
|
|
listener.componentMoved(e);
|
|
break;
|
|
case ComponentEvent.COMPONENT_SHOWN:
|
|
listener.componentShown(e);
|
|
break;
|
|
case ComponentEvent.COMPONENT_HIDDEN:
|
|
listener.componentHidden(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes focus events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>FocusListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless focus events are
|
|
* enabled for this component. Focus events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>FocusListener</code> object is registered
|
|
* via <code>addFocusListener</code>.
|
|
* <li>Focus events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>
|
|
* If focus events are enabled for a <code>Component</code>,
|
|
* the current <code>KeyboardFocusManager</code> determines
|
|
* whether or not a focus event should be dispatched to
|
|
* registered <code>FocusListener</code> objects. If the
|
|
* events are to be dispatched, the <code>KeyboardFocusManager</code>
|
|
* calls the <code>Component</code>'s <code>dispatchEvent</code>
|
|
* method, which results in a call to the <code>Component</code>'s
|
|
* <code>processFocusEvent</code> method.
|
|
* <p>
|
|
* If focus events are enabled for a <code>Component</code>, calling
|
|
* the <code>Component</code>'s <code>dispatchEvent</code> method
|
|
* with a <code>FocusEvent</code> as the argument will result in a
|
|
* call to the <code>Component</code>'s <code>processFocusEvent</code>
|
|
* method regardless of the current <code>KeyboardFocusManager</code>.
|
|
*
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the focus event
|
|
* @see java.awt.event.FocusEvent
|
|
* @see java.awt.event.FocusListener
|
|
* @see java.awt.KeyboardFocusManager
|
|
* @see #addFocusListener
|
|
* @see #enableEvents
|
|
* @see #dispatchEvent
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processFocusEvent(FocusEvent e) {
|
|
FocusListener listener = focusListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case FocusEvent.FOCUS_GAINED:
|
|
listener.focusGained(e);
|
|
break;
|
|
case FocusEvent.FOCUS_LOST:
|
|
listener.focusLost(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes key events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>KeyListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless key events are
|
|
* enabled for this component. Key events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>KeyListener</code> object is registered
|
|
* via <code>addKeyListener</code>.
|
|
* <li>Key events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
*
|
|
* <p>
|
|
* If key events are enabled for a <code>Component</code>,
|
|
* the current <code>KeyboardFocusManager</code> determines
|
|
* whether or not a key event should be dispatched to
|
|
* registered <code>KeyListener</code> objects. The
|
|
* <code>DefaultKeyboardFocusManager</code> will not dispatch
|
|
* key events to a <code>Component</code> that is not the focus
|
|
* owner or is not showing.
|
|
* <p>
|
|
* As of J2SE 1.4, <code>KeyEvent</code>s are redirected to
|
|
* the focus owner. Please see the
|
|
* <a href="doc-files/FocusSpec.html">Focus Specification</a>
|
|
* for further information.
|
|
* <p>
|
|
* Calling a <code>Component</code>'s <code>dispatchEvent</code>
|
|
* method with a <code>KeyEvent</code> as the argument will
|
|
* result in a call to the <code>Component</code>'s
|
|
* <code>processKeyEvent</code> method regardless of the
|
|
* current <code>KeyboardFocusManager</code> as long as the
|
|
* component is showing, focused, and enabled, and key events
|
|
* are enabled on it.
|
|
* <p>If the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the key event
|
|
* @see java.awt.event.KeyEvent
|
|
* @see java.awt.event.KeyListener
|
|
* @see java.awt.KeyboardFocusManager
|
|
* @see java.awt.DefaultKeyboardFocusManager
|
|
* @see #processEvent
|
|
* @see #dispatchEvent
|
|
* @see #addKeyListener
|
|
* @see #enableEvents
|
|
* @see #isShowing
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processKeyEvent(KeyEvent e) {
|
|
KeyListener listener = keyListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case KeyEvent.KEY_TYPED:
|
|
listener.keyTyped(e);
|
|
break;
|
|
case KeyEvent.KEY_PRESSED:
|
|
listener.keyPressed(e);
|
|
break;
|
|
case KeyEvent.KEY_RELEASED:
|
|
listener.keyReleased(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes mouse events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>MouseListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless mouse events are
|
|
* enabled for this component. Mouse events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>MouseListener</code> object is registered
|
|
* via <code>addMouseListener</code>.
|
|
* <li>Mouse events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the mouse event
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseListener
|
|
* @see #addMouseListener
|
|
* @see #enableEvents
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processMouseEvent(MouseEvent e) {
|
|
MouseListener listener = mouseListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case MouseEvent.MOUSE_PRESSED:
|
|
listener.mousePressed(e);
|
|
break;
|
|
case MouseEvent.MOUSE_RELEASED:
|
|
listener.mouseReleased(e);
|
|
break;
|
|
case MouseEvent.MOUSE_CLICKED:
|
|
listener.mouseClicked(e);
|
|
break;
|
|
case MouseEvent.MOUSE_EXITED:
|
|
listener.mouseExited(e);
|
|
break;
|
|
case MouseEvent.MOUSE_ENTERED:
|
|
listener.mouseEntered(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes mouse motion events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>MouseMotionListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless mouse motion events are
|
|
* enabled for this component. Mouse motion events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>MouseMotionListener</code> object is registered
|
|
* via <code>addMouseMotionListener</code>.
|
|
* <li>Mouse motion events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the mouse motion event
|
|
* @see java.awt.event.MouseEvent
|
|
* @see java.awt.event.MouseMotionListener
|
|
* @see #addMouseMotionListener
|
|
* @see #enableEvents
|
|
* @since JDK1.1
|
|
*/
|
|
protected void processMouseMotionEvent(MouseEvent e) {
|
|
MouseMotionListener listener = mouseMotionListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case MouseEvent.MOUSE_MOVED:
|
|
listener.mouseMoved(e);
|
|
break;
|
|
case MouseEvent.MOUSE_DRAGGED:
|
|
listener.mouseDragged(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes mouse wheel events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>MouseWheelListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless mouse wheel events are
|
|
* enabled for this component. Mouse wheel events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>A <code>MouseWheelListener</code> object is registered
|
|
* via <code>addMouseWheelListener</code>.
|
|
* <li>Mouse wheel events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>
|
|
* For information on how mouse wheel events are dispatched, see
|
|
* the class description for {@link MouseWheelEvent}.
|
|
* <p>
|
|
* Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the mouse wheel event
|
|
* @see java.awt.event.MouseWheelEvent
|
|
* @see java.awt.event.MouseWheelListener
|
|
* @see #addMouseWheelListener
|
|
* @see #enableEvents
|
|
* @since 1.4
|
|
*/
|
|
protected void processMouseWheelEvent(MouseWheelEvent e) {
|
|
MouseWheelListener listener = mouseWheelListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch(id) {
|
|
case MouseEvent.MOUSE_WHEEL:
|
|
listener.mouseWheelMoved(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
boolean postsOldMouseEvents() {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Processes input method events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>InputMethodListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless input method events
|
|
* are enabled for this component. Input method events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>An <code>InputMethodListener</code> object is registered
|
|
* via <code>addInputMethodListener</code>.
|
|
* <li>Input method events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the input method event
|
|
* @see java.awt.event.InputMethodEvent
|
|
* @see java.awt.event.InputMethodListener
|
|
* @see #addInputMethodListener
|
|
* @see #enableEvents
|
|
* @since 1.2
|
|
*/
|
|
protected void processInputMethodEvent(InputMethodEvent e) {
|
|
InputMethodListener listener = inputMethodListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch (id) {
|
|
case InputMethodEvent.INPUT_METHOD_TEXT_CHANGED:
|
|
listener.inputMethodTextChanged(e);
|
|
break;
|
|
case InputMethodEvent.CARET_POSITION_CHANGED:
|
|
listener.caretPositionChanged(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes hierarchy events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>HierarchyListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless hierarchy events
|
|
* are enabled for this component. Hierarchy events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>An <code>HierarchyListener</code> object is registered
|
|
* via <code>addHierarchyListener</code>.
|
|
* <li>Hierarchy events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the hierarchy event
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyListener
|
|
* @see #addHierarchyListener
|
|
* @see #enableEvents
|
|
* @since 1.3
|
|
*/
|
|
protected void processHierarchyEvent(HierarchyEvent e) {
|
|
HierarchyListener listener = hierarchyListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch (id) {
|
|
case HierarchyEvent.HIERARCHY_CHANGED:
|
|
listener.hierarchyChanged(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes hierarchy bounds events occurring on this component by
|
|
* dispatching them to any registered
|
|
* <code>HierarchyBoundsListener</code> objects.
|
|
* <p>
|
|
* This method is not called unless hierarchy bounds events
|
|
* are enabled for this component. Hierarchy bounds events are enabled
|
|
* when one of the following occurs:
|
|
* <ul>
|
|
* <li>An <code>HierarchyBoundsListener</code> object is registered
|
|
* via <code>addHierarchyBoundsListener</code>.
|
|
* <li>Hierarchy bounds events are enabled via <code>enableEvents</code>.
|
|
* </ul>
|
|
* <p>Note that if the event parameter is <code>null</code>
|
|
* the behavior is unspecified and may result in an
|
|
* exception.
|
|
*
|
|
* @param e the hierarchy event
|
|
* @see java.awt.event.HierarchyEvent
|
|
* @see java.awt.event.HierarchyBoundsListener
|
|
* @see #addHierarchyBoundsListener
|
|
* @see #enableEvents
|
|
* @since 1.3
|
|
*/
|
|
protected void processHierarchyBoundsEvent(HierarchyEvent e) {
|
|
HierarchyBoundsListener listener = hierarchyBoundsListener;
|
|
if (listener != null) {
|
|
int id = e.getID();
|
|
switch (id) {
|
|
case HierarchyEvent.ANCESTOR_MOVED:
|
|
listener.ancestorMoved(e);
|
|
break;
|
|
case HierarchyEvent.ANCESTOR_RESIZED:
|
|
listener.ancestorResized(e);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1
|
|
* replaced by processEvent(AWTEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean handleEvent(Event evt) {
|
|
switch (evt.id) {
|
|
case Event.MOUSE_ENTER:
|
|
return mouseEnter(evt, evt.x, evt.y);
|
|
|
|
case Event.MOUSE_EXIT:
|
|
return mouseExit(evt, evt.x, evt.y);
|
|
|
|
case Event.MOUSE_MOVE:
|
|
return mouseMove(evt, evt.x, evt.y);
|
|
|
|
case Event.MOUSE_DOWN:
|
|
return mouseDown(evt, evt.x, evt.y);
|
|
|
|
case Event.MOUSE_DRAG:
|
|
return mouseDrag(evt, evt.x, evt.y);
|
|
|
|
case Event.MOUSE_UP:
|
|
return mouseUp(evt, evt.x, evt.y);
|
|
|
|
case Event.KEY_PRESS:
|
|
case Event.KEY_ACTION:
|
|
return keyDown(evt, evt.key);
|
|
|
|
case Event.KEY_RELEASE:
|
|
case Event.KEY_ACTION_RELEASE:
|
|
return keyUp(evt, evt.key);
|
|
|
|
case Event.ACTION_EVENT:
|
|
return action(evt, evt.arg);
|
|
case Event.GOT_FOCUS:
|
|
return gotFocus(evt, evt.arg);
|
|
case Event.LOST_FOCUS:
|
|
return lostFocus(evt, evt.arg);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseDown(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseMotionEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseDrag(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseUp(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseMotionEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseMove(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseEnter(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processMouseEvent(MouseEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean mouseExit(Event evt, int x, int y) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processKeyEvent(KeyEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean keyDown(Event evt, int key) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processKeyEvent(KeyEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean keyUp(Event evt, int key) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* should register this component as ActionListener on component
|
|
* which fires action events.
|
|
*/
|
|
@Deprecated
|
|
public boolean action(Event evt, Object what) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Makes this <code>Component</code> displayable by connecting it to a
|
|
* native screen resource.
|
|
* This method is called internally by the toolkit and should
|
|
* not be called directly by programs.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
* @see #isDisplayable
|
|
* @see #removeNotify
|
|
* @see #invalidate
|
|
* @since JDK1.0
|
|
*/
|
|
public void addNotify() {
|
|
synchronized (getTreeLock()) {
|
|
ComponentPeer peer = this.peer;
|
|
if (peer == null || peer instanceof LightweightPeer){
|
|
if (peer == null) {
|
|
// Update both the Component's peer variable and the local
|
|
// variable we use for thread safety.
|
|
this.peer = peer = getToolkit().createComponent(this);
|
|
}
|
|
|
|
// This is a lightweight component which means it won't be
|
|
// able to get window-related events by itself. If any
|
|
// have been enabled, then the nearest native container must
|
|
// be enabled.
|
|
if (parent != null) {
|
|
long mask = 0;
|
|
if ((mouseListener != null) || ((eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0)) {
|
|
mask |= AWTEvent.MOUSE_EVENT_MASK;
|
|
}
|
|
if ((mouseMotionListener != null) ||
|
|
((eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0)) {
|
|
mask |= AWTEvent.MOUSE_MOTION_EVENT_MASK;
|
|
}
|
|
if ((mouseWheelListener != null ) ||
|
|
((eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0)) {
|
|
mask |= AWTEvent.MOUSE_WHEEL_EVENT_MASK;
|
|
}
|
|
if (focusListener != null || (eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0) {
|
|
mask |= AWTEvent.FOCUS_EVENT_MASK;
|
|
}
|
|
if (keyListener != null || (eventMask & AWTEvent.KEY_EVENT_MASK) != 0) {
|
|
mask |= AWTEvent.KEY_EVENT_MASK;
|
|
}
|
|
if (mask != 0) {
|
|
parent.proxyEnableEvents(mask);
|
|
}
|
|
}
|
|
} else {
|
|
// It's native. If the parent is lightweight it will need some
|
|
// help.
|
|
Container parent = getContainer();
|
|
if (parent != null && parent.isLightweight()) {
|
|
relocateComponent();
|
|
if (!parent.isRecursivelyVisibleUpToHeavyweightContainer())
|
|
{
|
|
peer.setVisible(false);
|
|
}
|
|
}
|
|
}
|
|
invalidate();
|
|
|
|
int npopups = (popups != null? popups.size() : 0);
|
|
for (int i = 0 ; i < npopups ; i++) {
|
|
PopupMenu popup = popups.elementAt(i);
|
|
popup.addNotify();
|
|
}
|
|
|
|
if (dropTarget != null) dropTarget.addNotify(peer);
|
|
|
|
peerFont = getFont();
|
|
|
|
if (getContainer() != null && !isAddNotifyComplete) {
|
|
getContainer().increaseComponentCount(this);
|
|
}
|
|
|
|
|
|
// Update stacking order
|
|
updateZOrder();
|
|
|
|
if (!isAddNotifyComplete) {
|
|
mixOnShowing();
|
|
}
|
|
|
|
isAddNotifyComplete = true;
|
|
|
|
if (hierarchyListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 ||
|
|
Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK)) {
|
|
HierarchyEvent e =
|
|
new HierarchyEvent(this, HierarchyEvent.HIERARCHY_CHANGED,
|
|
this, parent,
|
|
HierarchyEvent.DISPLAYABILITY_CHANGED |
|
|
((isRecursivelyVisible())
|
|
? HierarchyEvent.SHOWING_CHANGED
|
|
: 0));
|
|
dispatchEvent(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes this <code>Component</code> undisplayable by destroying it native
|
|
* screen resource.
|
|
* <p>
|
|
* This method is called by the toolkit internally and should
|
|
* not be called directly by programs. Code overriding
|
|
* this method should call <code>super.removeNotify</code> as
|
|
* the first line of the overriding method.
|
|
*
|
|
* @see #isDisplayable
|
|
* @see #addNotify
|
|
* @since JDK1.0
|
|
*/
|
|
public void removeNotify() {
|
|
KeyboardFocusManager.clearMostRecentFocusOwner(this);
|
|
if (KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
getPermanentFocusOwner() == this)
|
|
{
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
setGlobalPermanentFocusOwner(null);
|
|
}
|
|
|
|
synchronized (getTreeLock()) {
|
|
if (isFocusOwner() && KeyboardFocusManager.isAutoFocusTransferEnabledFor(this)) {
|
|
transferFocus(true);
|
|
}
|
|
|
|
if (getContainer() != null && isAddNotifyComplete) {
|
|
getContainer().decreaseComponentCount(this);
|
|
}
|
|
|
|
int npopups = (popups != null? popups.size() : 0);
|
|
for (int i = 0 ; i < npopups ; i++) {
|
|
PopupMenu popup = popups.elementAt(i);
|
|
popup.removeNotify();
|
|
}
|
|
// If there is any input context for this component, notify
|
|
// that this component is being removed. (This has to be done
|
|
// before hiding peer.)
|
|
if ((eventMask & AWTEvent.INPUT_METHODS_ENABLED_MASK) != 0) {
|
|
InputContext inputContext = getInputContext();
|
|
if (inputContext != null) {
|
|
inputContext.removeNotify(this);
|
|
}
|
|
}
|
|
|
|
ComponentPeer p = peer;
|
|
if (p != null) {
|
|
boolean isLightweight = isLightweight();
|
|
|
|
if (bufferStrategy instanceof FlipBufferStrategy) {
|
|
((FlipBufferStrategy)bufferStrategy).destroyBuffers();
|
|
}
|
|
|
|
if (dropTarget != null) dropTarget.removeNotify(peer);
|
|
|
|
// Hide peer first to stop system events such as cursor moves.
|
|
if (visible) {
|
|
p.setVisible(false);
|
|
}
|
|
|
|
peer = null; // Stop peer updates.
|
|
peerFont = null;
|
|
|
|
Toolkit.getEventQueue().removeSourceEvents(this, false);
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
discardKeyEvents(this);
|
|
|
|
p.dispose();
|
|
|
|
mixOnHiding(isLightweight);
|
|
|
|
isAddNotifyComplete = false;
|
|
// Nullifying compoundShape means that the component has normal shape
|
|
// (or has no shape at all).
|
|
this.compoundShape = null;
|
|
}
|
|
|
|
if (hierarchyListener != null ||
|
|
(eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 ||
|
|
Toolkit.enabledOnToolkit(AWTEvent.HIERARCHY_EVENT_MASK)) {
|
|
HierarchyEvent e =
|
|
new HierarchyEvent(this, HierarchyEvent.HIERARCHY_CHANGED,
|
|
this, parent,
|
|
HierarchyEvent.DISPLAYABILITY_CHANGED |
|
|
((isRecursivelyVisible())
|
|
? HierarchyEvent.SHOWING_CHANGED
|
|
: 0));
|
|
dispatchEvent(e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processFocusEvent(FocusEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean gotFocus(Event evt, Object what) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by processFocusEvent(FocusEvent).
|
|
*/
|
|
@Deprecated
|
|
public boolean lostFocus(Event evt, Object what) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns whether this <code>Component</code> can become the focus
|
|
* owner.
|
|
*
|
|
* @return <code>true</code> if this <code>Component</code> is
|
|
* focusable; <code>false</code> otherwise
|
|
* @see #setFocusable
|
|
* @since JDK1.1
|
|
* @deprecated As of 1.4, replaced by <code>isFocusable()</code>.
|
|
*/
|
|
@Deprecated
|
|
public boolean isFocusTraversable() {
|
|
if (isFocusTraversableOverridden == FOCUS_TRAVERSABLE_UNKNOWN) {
|
|
isFocusTraversableOverridden = FOCUS_TRAVERSABLE_DEFAULT;
|
|
}
|
|
return focusable;
|
|
}
|
|
|
|
/**
|
|
* Returns whether this Component can be focused.
|
|
*
|
|
* @return <code>true</code> if this Component is focusable;
|
|
* <code>false</code> otherwise.
|
|
* @see #setFocusable
|
|
* @since 1.4
|
|
*/
|
|
public boolean isFocusable() {
|
|
return isFocusTraversable();
|
|
}
|
|
|
|
/**
|
|
* Sets the focusable state of this Component to the specified value. This
|
|
* value overrides the Component's default focusability.
|
|
*
|
|
* @param focusable indicates whether this Component is focusable
|
|
* @see #isFocusable
|
|
* @since 1.4
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setFocusable(boolean focusable) {
|
|
boolean oldFocusable;
|
|
synchronized (this) {
|
|
oldFocusable = this.focusable;
|
|
this.focusable = focusable;
|
|
}
|
|
isFocusTraversableOverridden = FOCUS_TRAVERSABLE_SET;
|
|
|
|
firePropertyChange("focusable", oldFocusable, focusable);
|
|
if (oldFocusable && !focusable) {
|
|
if (isFocusOwner() && KeyboardFocusManager.isAutoFocusTransferEnabled()) {
|
|
transferFocus(true);
|
|
}
|
|
KeyboardFocusManager.clearMostRecentFocusOwner(this);
|
|
}
|
|
}
|
|
|
|
final boolean isFocusTraversableOverridden() {
|
|
return (isFocusTraversableOverridden != FOCUS_TRAVERSABLE_DEFAULT);
|
|
}
|
|
|
|
/**
|
|
* Sets the focus traversal keys for a given traversal operation for this
|
|
* Component.
|
|
* <p>
|
|
* The default values for a Component's focus traversal keys are
|
|
* implementation-dependent. Sun recommends that all implementations for a
|
|
* particular native platform use the same default values. The
|
|
* recommendations for Windows and Unix are listed below. These
|
|
* recommendations are used in the Sun AWT implementations.
|
|
*
|
|
* <table border=1 summary="Recommended default values for a Component's focus traversal keys">
|
|
* <tr>
|
|
* <th>Identifier</th>
|
|
* <th>Meaning</th>
|
|
* <th>Default</th>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS</td>
|
|
* <td>Normal forward keyboard traversal</td>
|
|
* <td>TAB on KEY_PRESSED, CTRL-TAB on KEY_PRESSED</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS</td>
|
|
* <td>Normal reverse keyboard traversal</td>
|
|
* <td>SHIFT-TAB on KEY_PRESSED, CTRL-SHIFT-TAB on KEY_PRESSED</td>
|
|
* </tr>
|
|
* <tr>
|
|
* <td>KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS</td>
|
|
* <td>Go up one focus traversal cycle</td>
|
|
* <td>none</td>
|
|
* </tr>
|
|
* </table>
|
|
*
|
|
* To disable a traversal key, use an empty Set; Collections.EMPTY_SET is
|
|
* recommended.
|
|
* <p>
|
|
* Using the AWTKeyStroke API, client code can specify on which of two
|
|
* specific KeyEvents, KEY_PRESSED or KEY_RELEASED, the focus traversal
|
|
* operation will occur. Regardless of which KeyEvent is specified,
|
|
* however, all KeyEvents related to the focus traversal key, including the
|
|
* associated KEY_TYPED event, will be consumed, and will not be dispatched
|
|
* to any Component. It is a runtime error to specify a KEY_TYPED event as
|
|
* mapping to a focus traversal operation, or to map the same event to
|
|
* multiple default focus traversal operations.
|
|
* <p>
|
|
* If a value of null is specified for the Set, this Component inherits the
|
|
* Set from its parent. If all ancestors of this Component have null
|
|
* specified for the Set, then the current KeyboardFocusManager's default
|
|
* Set is used.
|
|
* <p>
|
|
* This method may throw a {@code ClassCastException} if any {@code Object}
|
|
* in {@code keystrokes} is not an {@code AWTKeyStroke}.
|
|
*
|
|
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
|
|
* @param keystrokes the Set of AWTKeyStroke for the specified operation
|
|
* @see #getFocusTraversalKeys
|
|
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
|
|
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
|
|
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
|
|
* @throws IllegalArgumentException if id is not one of
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or if keystrokes
|
|
* contains null, or if any keystroke represents a KEY_TYPED event,
|
|
* or if any keystroke already maps to another focus traversal
|
|
* operation for this Component
|
|
* @since 1.4
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setFocusTraversalKeys(int id,
|
|
Set<? extends AWTKeyStroke> keystrokes)
|
|
{
|
|
if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH - 1) {
|
|
throw new IllegalArgumentException("invalid focus traversal key identifier");
|
|
}
|
|
|
|
setFocusTraversalKeys_NoIDCheck(id, keystrokes);
|
|
}
|
|
|
|
/**
|
|
* Returns the Set of focus traversal keys for a given traversal operation
|
|
* for this Component. (See
|
|
* <code>setFocusTraversalKeys</code> for a full description of each key.)
|
|
* <p>
|
|
* If a Set of traversal keys has not been explicitly defined for this
|
|
* Component, then this Component's parent's Set is returned. If no Set
|
|
* has been explicitly defined for any of this Component's ancestors, then
|
|
* the current KeyboardFocusManager's default Set is returned.
|
|
*
|
|
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
|
|
* @return the Set of AWTKeyStrokes for the specified operation. The Set
|
|
* will be unmodifiable, and may be empty. null will never be
|
|
* returned.
|
|
* @see #setFocusTraversalKeys
|
|
* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
|
|
* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
|
|
* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
|
|
* @throws IllegalArgumentException if id is not one of
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
|
|
* @since 1.4
|
|
*/
|
|
public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
|
|
if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH - 1) {
|
|
throw new IllegalArgumentException("invalid focus traversal key identifier");
|
|
}
|
|
|
|
return getFocusTraversalKeys_NoIDCheck(id);
|
|
}
|
|
|
|
// We define these methods so that Container does not need to repeat this
|
|
// code. Container cannot call super.<method> because Container allows
|
|
// DOWN_CYCLE_TRAVERSAL_KEY while Component does not. The Component method
|
|
// would erroneously generate an IllegalArgumentException for
|
|
// DOWN_CYCLE_TRAVERSAL_KEY.
|
|
final void setFocusTraversalKeys_NoIDCheck(int id, Set<? extends AWTKeyStroke> keystrokes) {
|
|
Set<AWTKeyStroke> oldKeys;
|
|
|
|
synchronized (this) {
|
|
if (focusTraversalKeys == null) {
|
|
initializeFocusTraversalKeys();
|
|
}
|
|
|
|
if (keystrokes != null) {
|
|
for (AWTKeyStroke keystroke : keystrokes ) {
|
|
|
|
if (keystroke == null) {
|
|
throw new IllegalArgumentException("cannot set null focus traversal key");
|
|
}
|
|
|
|
if (keystroke.getKeyChar() != KeyEvent.CHAR_UNDEFINED) {
|
|
throw new IllegalArgumentException("focus traversal keys cannot map to KEY_TYPED events");
|
|
}
|
|
|
|
for (int i = 0; i < focusTraversalKeys.length; i++) {
|
|
if (i == id) {
|
|
continue;
|
|
}
|
|
|
|
if (getFocusTraversalKeys_NoIDCheck(i).contains(keystroke))
|
|
{
|
|
throw new IllegalArgumentException("focus traversal keys must be unique for a Component");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
oldKeys = focusTraversalKeys[id];
|
|
focusTraversalKeys[id] = (keystrokes != null)
|
|
? Collections.unmodifiableSet(new HashSet<AWTKeyStroke>(keystrokes))
|
|
: null;
|
|
}
|
|
|
|
firePropertyChange(focusTraversalKeyPropertyNames[id], oldKeys,
|
|
keystrokes);
|
|
}
|
|
final Set<AWTKeyStroke> getFocusTraversalKeys_NoIDCheck(int id) {
|
|
// Okay to return Set directly because it is an unmodifiable view
|
|
@SuppressWarnings("unchecked")
|
|
Set<AWTKeyStroke> keystrokes = (focusTraversalKeys != null)
|
|
? focusTraversalKeys[id]
|
|
: null;
|
|
|
|
if (keystrokes != null) {
|
|
return keystrokes;
|
|
} else {
|
|
Container parent = this.parent;
|
|
if (parent != null) {
|
|
return parent.getFocusTraversalKeys(id);
|
|
} else {
|
|
return KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
getDefaultFocusTraversalKeys(id);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns whether the Set of focus traversal keys for the given focus
|
|
* traversal operation has been explicitly defined for this Component. If
|
|
* this method returns <code>false</code>, this Component is inheriting the
|
|
* Set from an ancestor, or from the current KeyboardFocusManager.
|
|
*
|
|
* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
|
|
* @return <code>true</code> if the the Set of focus traversal keys for the
|
|
* given focus traversal operation has been explicitly defined for
|
|
* this Component; <code>false</code> otherwise.
|
|
* @throws IllegalArgumentException if id is not one of
|
|
* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
|
|
* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, or
|
|
* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS
|
|
* @since 1.4
|
|
*/
|
|
public boolean areFocusTraversalKeysSet(int id) {
|
|
if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH - 1) {
|
|
throw new IllegalArgumentException("invalid focus traversal key identifier");
|
|
}
|
|
|
|
return (focusTraversalKeys != null && focusTraversalKeys[id] != null);
|
|
}
|
|
|
|
/**
|
|
* Sets whether focus traversal keys are enabled for this Component.
|
|
* Components for which focus traversal keys are disabled receive key
|
|
* events for focus traversal keys. Components for which focus traversal
|
|
* keys are enabled do not see these events; instead, the events are
|
|
* automatically converted to traversal operations.
|
|
*
|
|
* @param focusTraversalKeysEnabled whether focus traversal keys are
|
|
* enabled for this Component
|
|
* @see #getFocusTraversalKeysEnabled
|
|
* @see #setFocusTraversalKeys
|
|
* @see #getFocusTraversalKeys
|
|
* @since 1.4
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setFocusTraversalKeysEnabled(boolean
|
|
focusTraversalKeysEnabled) {
|
|
boolean oldFocusTraversalKeysEnabled;
|
|
synchronized (this) {
|
|
oldFocusTraversalKeysEnabled = this.focusTraversalKeysEnabled;
|
|
this.focusTraversalKeysEnabled = focusTraversalKeysEnabled;
|
|
}
|
|
firePropertyChange("focusTraversalKeysEnabled",
|
|
oldFocusTraversalKeysEnabled,
|
|
focusTraversalKeysEnabled);
|
|
}
|
|
|
|
/**
|
|
* Returns whether focus traversal keys are enabled for this Component.
|
|
* Components for which focus traversal keys are disabled receive key
|
|
* events for focus traversal keys. Components for which focus traversal
|
|
* keys are enabled do not see these events; instead, the events are
|
|
* automatically converted to traversal operations.
|
|
*
|
|
* @return whether focus traversal keys are enabled for this Component
|
|
* @see #setFocusTraversalKeysEnabled
|
|
* @see #setFocusTraversalKeys
|
|
* @see #getFocusTraversalKeys
|
|
* @since 1.4
|
|
*/
|
|
public boolean getFocusTraversalKeysEnabled() {
|
|
return focusTraversalKeysEnabled;
|
|
}
|
|
|
|
/**
|
|
* Requests that this Component get the input focus, and that this
|
|
* Component's top-level ancestor become the focused Window. This
|
|
* component must be displayable, focusable, visible and all of
|
|
* its ancestors (with the exception of the top-level Window) must
|
|
* be visible for the request to be granted. Every effort will be
|
|
* made to honor the request; however, in some cases it may be
|
|
* impossible to do so. Developers must never assume that this
|
|
* Component is the focus owner until this Component receives a
|
|
* FOCUS_GAINED event. If this request is denied because this
|
|
* Component's top-level Window cannot become the focused Window,
|
|
* the request will be remembered and will be granted when the
|
|
* Window is later focused by the user.
|
|
* <p>
|
|
* This method cannot be used to set the focus owner to no Component at
|
|
* all. Use <code>KeyboardFocusManager.clearGlobalFocusOwner()</code>
|
|
* instead.
|
|
* <p>
|
|
* Because the focus behavior of this method is platform-dependent,
|
|
* developers are strongly encouraged to use
|
|
* <code>requestFocusInWindow</code> when possible.
|
|
*
|
|
* <p>Note: Not all focus transfers result from invoking this method. As
|
|
* such, a component may receive focus without this or any of the other
|
|
* {@code requestFocus} methods of {@code Component} being invoked.
|
|
*
|
|
* @see #requestFocusInWindow
|
|
* @see java.awt.event.FocusEvent
|
|
* @see #addFocusListener
|
|
* @see #isFocusable
|
|
* @see #isDisplayable
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner
|
|
* @since JDK1.0
|
|
*/
|
|
public void requestFocus() {
|
|
requestFocusHelper(false, true);
|
|
}
|
|
|
|
boolean requestFocus(CausedFocusEvent.Cause cause) {
|
|
return requestFocusHelper(false, true, cause);
|
|
}
|
|
|
|
/**
|
|
* Requests that this <code>Component</code> get the input focus,
|
|
* and that this <code>Component</code>'s top-level ancestor
|
|
* become the focused <code>Window</code>. This component must be
|
|
* displayable, focusable, visible and all of its ancestors (with
|
|
* the exception of the top-level Window) must be visible for the
|
|
* request to be granted. Every effort will be made to honor the
|
|
* request; however, in some cases it may be impossible to do
|
|
* so. Developers must never assume that this component is the
|
|
* focus owner until this component receives a FOCUS_GAINED
|
|
* event. If this request is denied because this component's
|
|
* top-level window cannot become the focused window, the request
|
|
* will be remembered and will be granted when the window is later
|
|
* focused by the user.
|
|
* <p>
|
|
* This method returns a boolean value. If <code>false</code> is returned,
|
|
* the request is <b>guaranteed to fail</b>. If <code>true</code> is
|
|
* returned, the request will succeed <b>unless</b> it is vetoed, or an
|
|
* extraordinary event, such as disposal of the component's peer, occurs
|
|
* before the request can be granted by the native windowing system. Again,
|
|
* while a return value of <code>true</code> indicates that the request is
|
|
* likely to succeed, developers must never assume that this component is
|
|
* the focus owner until this component receives a FOCUS_GAINED event.
|
|
* <p>
|
|
* This method cannot be used to set the focus owner to no component at
|
|
* all. Use <code>KeyboardFocusManager.clearGlobalFocusOwner</code>
|
|
* instead.
|
|
* <p>
|
|
* Because the focus behavior of this method is platform-dependent,
|
|
* developers are strongly encouraged to use
|
|
* <code>requestFocusInWindow</code> when possible.
|
|
* <p>
|
|
* Every effort will be made to ensure that <code>FocusEvent</code>s
|
|
* generated as a
|
|
* result of this request will have the specified temporary value. However,
|
|
* because specifying an arbitrary temporary state may not be implementable
|
|
* on all native windowing systems, correct behavior for this method can be
|
|
* guaranteed only for lightweight <code>Component</code>s.
|
|
* This method is not intended
|
|
* for general use, but exists instead as a hook for lightweight component
|
|
* libraries, such as Swing.
|
|
*
|
|
* <p>Note: Not all focus transfers result from invoking this method. As
|
|
* such, a component may receive focus without this or any of the other
|
|
* {@code requestFocus} methods of {@code Component} being invoked.
|
|
*
|
|
* @param temporary true if the focus change is temporary,
|
|
* such as when the window loses the focus; for
|
|
* more information on temporary focus changes see the
|
|
*<a href="../../java/awt/doc-files/FocusSpec.html">Focus Specification</a>
|
|
* @return <code>false</code> if the focus change request is guaranteed to
|
|
* fail; <code>true</code> if it is likely to succeed
|
|
* @see java.awt.event.FocusEvent
|
|
* @see #addFocusListener
|
|
* @see #isFocusable
|
|
* @see #isDisplayable
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner
|
|
* @since 1.4
|
|
*/
|
|
protected boolean requestFocus(boolean temporary) {
|
|
return requestFocusHelper(temporary, true);
|
|
}
|
|
|
|
boolean requestFocus(boolean temporary, CausedFocusEvent.Cause cause) {
|
|
return requestFocusHelper(temporary, true, cause);
|
|
}
|
|
/**
|
|
* Requests that this Component get the input focus, if this
|
|
* Component's top-level ancestor is already the focused
|
|
* Window. This component must be displayable, focusable, visible
|
|
* and all of its ancestors (with the exception of the top-level
|
|
* Window) must be visible for the request to be granted. Every
|
|
* effort will be made to honor the request; however, in some
|
|
* cases it may be impossible to do so. Developers must never
|
|
* assume that this Component is the focus owner until this
|
|
* Component receives a FOCUS_GAINED event.
|
|
* <p>
|
|
* This method returns a boolean value. If <code>false</code> is returned,
|
|
* the request is <b>guaranteed to fail</b>. If <code>true</code> is
|
|
* returned, the request will succeed <b>unless</b> it is vetoed, or an
|
|
* extraordinary event, such as disposal of the Component's peer, occurs
|
|
* before the request can be granted by the native windowing system. Again,
|
|
* while a return value of <code>true</code> indicates that the request is
|
|
* likely to succeed, developers must never assume that this Component is
|
|
* the focus owner until this Component receives a FOCUS_GAINED event.
|
|
* <p>
|
|
* This method cannot be used to set the focus owner to no Component at
|
|
* all. Use <code>KeyboardFocusManager.clearGlobalFocusOwner()</code>
|
|
* instead.
|
|
* <p>
|
|
* The focus behavior of this method can be implemented uniformly across
|
|
* platforms, and thus developers are strongly encouraged to use this
|
|
* method over <code>requestFocus</code> when possible. Code which relies
|
|
* on <code>requestFocus</code> may exhibit different focus behavior on
|
|
* different platforms.
|
|
*
|
|
* <p>Note: Not all focus transfers result from invoking this method. As
|
|
* such, a component may receive focus without this or any of the other
|
|
* {@code requestFocus} methods of {@code Component} being invoked.
|
|
*
|
|
* @return <code>false</code> if the focus change request is guaranteed to
|
|
* fail; <code>true</code> if it is likely to succeed
|
|
* @see #requestFocus
|
|
* @see java.awt.event.FocusEvent
|
|
* @see #addFocusListener
|
|
* @see #isFocusable
|
|
* @see #isDisplayable
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner
|
|
* @since 1.4
|
|
*/
|
|
public boolean requestFocusInWindow() {
|
|
return requestFocusHelper(false, false);
|
|
}
|
|
|
|
boolean requestFocusInWindow(CausedFocusEvent.Cause cause) {
|
|
return requestFocusHelper(false, false, cause);
|
|
}
|
|
|
|
/**
|
|
* Requests that this <code>Component</code> get the input focus,
|
|
* if this <code>Component</code>'s top-level ancestor is already
|
|
* the focused <code>Window</code>. This component must be
|
|
* displayable, focusable, visible and all of its ancestors (with
|
|
* the exception of the top-level Window) must be visible for the
|
|
* request to be granted. Every effort will be made to honor the
|
|
* request; however, in some cases it may be impossible to do
|
|
* so. Developers must never assume that this component is the
|
|
* focus owner until this component receives a FOCUS_GAINED event.
|
|
* <p>
|
|
* This method returns a boolean value. If <code>false</code> is returned,
|
|
* the request is <b>guaranteed to fail</b>. If <code>true</code> is
|
|
* returned, the request will succeed <b>unless</b> it is vetoed, or an
|
|
* extraordinary event, such as disposal of the component's peer, occurs
|
|
* before the request can be granted by the native windowing system. Again,
|
|
* while a return value of <code>true</code> indicates that the request is
|
|
* likely to succeed, developers must never assume that this component is
|
|
* the focus owner until this component receives a FOCUS_GAINED event.
|
|
* <p>
|
|
* This method cannot be used to set the focus owner to no component at
|
|
* all. Use <code>KeyboardFocusManager.clearGlobalFocusOwner</code>
|
|
* instead.
|
|
* <p>
|
|
* The focus behavior of this method can be implemented uniformly across
|
|
* platforms, and thus developers are strongly encouraged to use this
|
|
* method over <code>requestFocus</code> when possible. Code which relies
|
|
* on <code>requestFocus</code> may exhibit different focus behavior on
|
|
* different platforms.
|
|
* <p>
|
|
* Every effort will be made to ensure that <code>FocusEvent</code>s
|
|
* generated as a
|
|
* result of this request will have the specified temporary value. However,
|
|
* because specifying an arbitrary temporary state may not be implementable
|
|
* on all native windowing systems, correct behavior for this method can be
|
|
* guaranteed only for lightweight components. This method is not intended
|
|
* for general use, but exists instead as a hook for lightweight component
|
|
* libraries, such as Swing.
|
|
*
|
|
* <p>Note: Not all focus transfers result from invoking this method. As
|
|
* such, a component may receive focus without this or any of the other
|
|
* {@code requestFocus} methods of {@code Component} being invoked.
|
|
*
|
|
* @param temporary true if the focus change is temporary,
|
|
* such as when the window loses the focus; for
|
|
* more information on temporary focus changes see the
|
|
*<a href="../../java/awt/doc-files/FocusSpec.html">Focus Specification</a>
|
|
* @return <code>false</code> if the focus change request is guaranteed to
|
|
* fail; <code>true</code> if it is likely to succeed
|
|
* @see #requestFocus
|
|
* @see java.awt.event.FocusEvent
|
|
* @see #addFocusListener
|
|
* @see #isFocusable
|
|
* @see #isDisplayable
|
|
* @see KeyboardFocusManager#clearGlobalFocusOwner
|
|
* @since 1.4
|
|
*/
|
|
protected boolean requestFocusInWindow(boolean temporary) {
|
|
return requestFocusHelper(temporary, false);
|
|
}
|
|
|
|
boolean requestFocusInWindow(boolean temporary, CausedFocusEvent.Cause cause) {
|
|
return requestFocusHelper(temporary, false, cause);
|
|
}
|
|
|
|
final boolean requestFocusHelper(boolean temporary,
|
|
boolean focusedWindowChangeAllowed) {
|
|
return requestFocusHelper(temporary, focusedWindowChangeAllowed, CausedFocusEvent.Cause.UNKNOWN);
|
|
}
|
|
|
|
final boolean requestFocusHelper(boolean temporary,
|
|
boolean focusedWindowChangeAllowed,
|
|
CausedFocusEvent.Cause cause)
|
|
{
|
|
// 1) Check if the event being dispatched is a system-generated mouse event.
|
|
AWTEvent currentEvent = EventQueue.getCurrentEvent();
|
|
if (currentEvent instanceof MouseEvent &&
|
|
SunToolkit.isSystemGenerated(currentEvent))
|
|
{
|
|
// 2) Sanity check: if the mouse event component source belongs to the same containing window.
|
|
Component source = ((MouseEvent)currentEvent).getComponent();
|
|
if (source == null || source.getContainingWindow() == getContainingWindow()) {
|
|
focusLog.finest("requesting focus by mouse event \"in window\"");
|
|
|
|
// If both the conditions are fulfilled the focus request should be strictly
|
|
// bounded by the toplevel window. It's assumed that the mouse event activates
|
|
// the window (if it wasn't active) and this makes it possible for a focus
|
|
// request with a strong in-window requirement to change focus in the bounds
|
|
// of the toplevel. If, by any means, due to asynchronous nature of the event
|
|
// dispatching mechanism, the window happens to be natively inactive by the time
|
|
// this focus request is eventually handled, it should not re-activate the
|
|
// toplevel. Otherwise the result may not meet user expectations. See 6981400.
|
|
focusedWindowChangeAllowed = false;
|
|
}
|
|
}
|
|
if (!isRequestFocusAccepted(temporary, focusedWindowChangeAllowed, cause)) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("requestFocus is not accepted");
|
|
}
|
|
return false;
|
|
}
|
|
// Update most-recent map
|
|
KeyboardFocusManager.setMostRecentFocusOwner(this);
|
|
|
|
Component window = this;
|
|
while ( (window != null) && !(window instanceof Window)) {
|
|
if (!window.isVisible()) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("component is recurively invisible");
|
|
}
|
|
return false;
|
|
}
|
|
window = window.parent;
|
|
}
|
|
|
|
ComponentPeer peer = this.peer;
|
|
Component heavyweight = (peer instanceof LightweightPeer)
|
|
? getNativeContainer() : this;
|
|
if (heavyweight == null || !heavyweight.isVisible()) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Component is not a part of visible hierarchy");
|
|
}
|
|
return false;
|
|
}
|
|
peer = heavyweight.peer;
|
|
if (peer == null) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Peer is null");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Focus this Component
|
|
long time = 0;
|
|
if (EventQueue.isDispatchThread()) {
|
|
time = Toolkit.getEventQueue().getMostRecentKeyEventTime();
|
|
} else {
|
|
// A focus request made from outside EDT should not be associated with any event
|
|
// and so its time stamp is simply set to the current time.
|
|
time = System.currentTimeMillis();
|
|
}
|
|
|
|
boolean success = peer.requestFocus
|
|
(this, temporary, focusedWindowChangeAllowed, time, cause);
|
|
if (!success) {
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager
|
|
(appContext).dequeueKeyEvents(time, this);
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Peer request failed");
|
|
}
|
|
} else {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Pass for " + this);
|
|
}
|
|
}
|
|
return success;
|
|
}
|
|
|
|
private boolean isRequestFocusAccepted(boolean temporary,
|
|
boolean focusedWindowChangeAllowed,
|
|
CausedFocusEvent.Cause cause)
|
|
{
|
|
if (!isFocusable() || !isVisible()) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Not focusable or not visible");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
ComponentPeer peer = this.peer;
|
|
if (peer == null) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("peer is null");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Window window = getContainingWindow();
|
|
if (window == null || !window.isFocusableWindow()) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("Component doesn't have toplevel");
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// We have passed all regular checks for focus request,
|
|
// now let's call RequestFocusController and see what it says.
|
|
Component focusOwner = KeyboardFocusManager.getMostRecentFocusOwner(window);
|
|
if (focusOwner == null) {
|
|
// sometimes most recent focus owner may be null, but focus owner is not
|
|
// e.g. we reset most recent focus owner if user removes focus owner
|
|
focusOwner = KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
|
|
if (focusOwner != null && focusOwner.getContainingWindow() != window) {
|
|
focusOwner = null;
|
|
}
|
|
}
|
|
|
|
if (focusOwner == this || focusOwner == null) {
|
|
// Controller is supposed to verify focus transfers and for this it
|
|
// should know both from and to components. And it shouldn't verify
|
|
// transfers from when these components are equal.
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("focus owner is null or this");
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if (CausedFocusEvent.Cause.ACTIVATION == cause) {
|
|
// we shouldn't call RequestFocusController in case we are
|
|
// in activation. We do request focus on component which
|
|
// has got temporary focus lost and then on component which is
|
|
// most recent focus owner. But most recent focus owner can be
|
|
// changed by requestFocsuXXX() call only, so this transfer has
|
|
// been already approved.
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("cause is activation");
|
|
}
|
|
return true;
|
|
}
|
|
|
|
boolean ret = Component.requestFocusController.acceptRequestFocus(focusOwner,
|
|
this,
|
|
temporary,
|
|
focusedWindowChangeAllowed,
|
|
cause);
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
focusLog.finest("RequestFocusController returns {0}", ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
private static RequestFocusController requestFocusController = new DummyRequestFocusController();
|
|
|
|
// Swing access this method through reflection to implement InputVerifier's functionality.
|
|
// Perhaps, we should make this method public (later ;)
|
|
private static class DummyRequestFocusController implements RequestFocusController {
|
|
public boolean acceptRequestFocus(Component from, Component to,
|
|
boolean temporary, boolean focusedWindowChangeAllowed,
|
|
CausedFocusEvent.Cause cause)
|
|
{
|
|
return true;
|
|
}
|
|
};
|
|
|
|
synchronized static void setRequestFocusController(RequestFocusController requestController)
|
|
{
|
|
if (requestController == null) {
|
|
requestFocusController = new DummyRequestFocusController();
|
|
} else {
|
|
requestFocusController = requestController;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the Container which is the focus cycle root of this Component's
|
|
* focus traversal cycle. Each focus traversal cycle has only a single
|
|
* focus cycle root and each Component which is not a Container belongs to
|
|
* only a single focus traversal cycle. Containers which are focus cycle
|
|
* roots belong to two cycles: one rooted at the Container itself, and one
|
|
* rooted at the Container's nearest focus-cycle-root ancestor. For such
|
|
* Containers, this method will return the Container's nearest focus-cycle-
|
|
* root ancestor.
|
|
*
|
|
* @return this Component's nearest focus-cycle-root ancestor
|
|
* @see Container#isFocusCycleRoot()
|
|
* @since 1.4
|
|
*/
|
|
public Container getFocusCycleRootAncestor() {
|
|
Container rootAncestor = this.parent;
|
|
while (rootAncestor != null && !rootAncestor.isFocusCycleRoot()) {
|
|
rootAncestor = rootAncestor.parent;
|
|
}
|
|
return rootAncestor;
|
|
}
|
|
|
|
/**
|
|
* Returns whether the specified Container is the focus cycle root of this
|
|
* Component's focus traversal cycle. Each focus traversal cycle has only
|
|
* a single focus cycle root and each Component which is not a Container
|
|
* belongs to only a single focus traversal cycle.
|
|
*
|
|
* @param container the Container to be tested
|
|
* @return <code>true</code> if the specified Container is a focus-cycle-
|
|
* root of this Component; <code>false</code> otherwise
|
|
* @see Container#isFocusCycleRoot()
|
|
* @since 1.4
|
|
*/
|
|
public boolean isFocusCycleRoot(Container container) {
|
|
Container rootAncestor = getFocusCycleRootAncestor();
|
|
return (rootAncestor == container);
|
|
}
|
|
|
|
Container getTraversalRoot() {
|
|
return getFocusCycleRootAncestor();
|
|
}
|
|
|
|
/**
|
|
* Transfers the focus to the next component, as though this Component were
|
|
* the focus owner.
|
|
* @see #requestFocus()
|
|
* @since JDK1.1
|
|
*/
|
|
public void transferFocus() {
|
|
nextFocus();
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by transferFocus().
|
|
*/
|
|
@Deprecated
|
|
public void nextFocus() {
|
|
transferFocus(false);
|
|
}
|
|
|
|
boolean transferFocus(boolean clearOnFailure) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("clearOnFailure = " + clearOnFailure);
|
|
}
|
|
Component toFocus = getNextFocusCandidate();
|
|
boolean res = false;
|
|
if (toFocus != null && !toFocus.isFocusOwner() && toFocus != this) {
|
|
res = toFocus.requestFocusInWindow(CausedFocusEvent.Cause.TRAVERSAL_FORWARD);
|
|
}
|
|
if (clearOnFailure && !res) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("clear global focus owner");
|
|
}
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwnerPriv();
|
|
}
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("returning result: " + res);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
final Component getNextFocusCandidate() {
|
|
Container rootAncestor = getTraversalRoot();
|
|
Component comp = this;
|
|
while (rootAncestor != null &&
|
|
!(rootAncestor.isShowing() && rootAncestor.canBeFocusOwner()))
|
|
{
|
|
comp = rootAncestor;
|
|
rootAncestor = comp.getFocusCycleRootAncestor();
|
|
}
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("comp = " + comp + ", root = " + rootAncestor);
|
|
}
|
|
Component candidate = null;
|
|
if (rootAncestor != null) {
|
|
FocusTraversalPolicy policy = rootAncestor.getFocusTraversalPolicy();
|
|
Component toFocus = policy.getComponentAfter(rootAncestor, comp);
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("component after is " + toFocus);
|
|
}
|
|
if (toFocus == null) {
|
|
toFocus = policy.getDefaultComponent(rootAncestor);
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("default component is " + toFocus);
|
|
}
|
|
}
|
|
if (toFocus == null) {
|
|
Applet applet = EmbeddedFrame.getAppletIfAncestorOf(this);
|
|
if (applet != null) {
|
|
toFocus = applet;
|
|
}
|
|
}
|
|
candidate = toFocus;
|
|
}
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("Focus transfer candidate: " + candidate);
|
|
}
|
|
return candidate;
|
|
}
|
|
|
|
/**
|
|
* Transfers the focus to the previous component, as though this Component
|
|
* were the focus owner.
|
|
* @see #requestFocus()
|
|
* @since 1.4
|
|
*/
|
|
public void transferFocusBackward() {
|
|
transferFocusBackward(false);
|
|
}
|
|
|
|
boolean transferFocusBackward(boolean clearOnFailure) {
|
|
Container rootAncestor = getTraversalRoot();
|
|
Component comp = this;
|
|
while (rootAncestor != null &&
|
|
!(rootAncestor.isShowing() && rootAncestor.canBeFocusOwner()))
|
|
{
|
|
comp = rootAncestor;
|
|
rootAncestor = comp.getFocusCycleRootAncestor();
|
|
}
|
|
boolean res = false;
|
|
if (rootAncestor != null) {
|
|
FocusTraversalPolicy policy = rootAncestor.getFocusTraversalPolicy();
|
|
Component toFocus = policy.getComponentBefore(rootAncestor, comp);
|
|
if (toFocus == null) {
|
|
toFocus = policy.getDefaultComponent(rootAncestor);
|
|
}
|
|
if (toFocus != null) {
|
|
res = toFocus.requestFocusInWindow(CausedFocusEvent.Cause.TRAVERSAL_BACKWARD);
|
|
}
|
|
}
|
|
if (clearOnFailure && !res) {
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("clear global focus owner");
|
|
}
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().clearGlobalFocusOwnerPriv();
|
|
}
|
|
if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
focusLog.finer("returning result: " + res);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* Transfers the focus up one focus traversal cycle. Typically, the focus
|
|
* owner is set to this Component's focus cycle root, and the current focus
|
|
* cycle root is set to the new focus owner's focus cycle root. If,
|
|
* however, this Component's focus cycle root is a Window, then the focus
|
|
* owner is set to the focus cycle root's default Component to focus, and
|
|
* the current focus cycle root is unchanged.
|
|
*
|
|
* @see #requestFocus()
|
|
* @see Container#isFocusCycleRoot()
|
|
* @see Container#setFocusCycleRoot(boolean)
|
|
* @since 1.4
|
|
*/
|
|
public void transferFocusUpCycle() {
|
|
Container rootAncestor;
|
|
for (rootAncestor = getFocusCycleRootAncestor();
|
|
rootAncestor != null && !(rootAncestor.isShowing() &&
|
|
rootAncestor.isFocusable() &&
|
|
rootAncestor.isEnabled());
|
|
rootAncestor = rootAncestor.getFocusCycleRootAncestor()) {
|
|
}
|
|
|
|
if (rootAncestor != null) {
|
|
Container rootAncestorRootAncestor =
|
|
rootAncestor.getFocusCycleRootAncestor();
|
|
Container fcr = (rootAncestorRootAncestor != null) ?
|
|
rootAncestorRootAncestor : rootAncestor;
|
|
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
setGlobalCurrentFocusCycleRootPriv(fcr);
|
|
rootAncestor.requestFocus(CausedFocusEvent.Cause.TRAVERSAL_UP);
|
|
} else {
|
|
Window window = getContainingWindow();
|
|
|
|
if (window != null) {
|
|
Component toFocus = window.getFocusTraversalPolicy().
|
|
getDefaultComponent(window);
|
|
if (toFocus != null) {
|
|
KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
setGlobalCurrentFocusCycleRootPriv(window);
|
|
toFocus.requestFocus(CausedFocusEvent.Cause.TRAVERSAL_UP);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns <code>true</code> if this <code>Component</code> is the
|
|
* focus owner. This method is obsolete, and has been replaced by
|
|
* <code>isFocusOwner()</code>.
|
|
*
|
|
* @return <code>true</code> if this <code>Component</code> is the
|
|
* focus owner; <code>false</code> otherwise
|
|
* @since 1.2
|
|
*/
|
|
public boolean hasFocus() {
|
|
return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
|
|
getFocusOwner() == this);
|
|
}
|
|
|
|
/**
|
|
* Returns <code>true</code> if this <code>Component</code> is the
|
|
* focus owner.
|
|
*
|
|
* @return <code>true</code> if this <code>Component</code> is the
|
|
* focus owner; <code>false</code> otherwise
|
|
* @since 1.4
|
|
*/
|
|
public boolean isFocusOwner() {
|
|
return hasFocus();
|
|
}
|
|
|
|
/*
|
|
* Used to disallow auto-focus-transfer on disposal of the focus owner
|
|
* in the process of disposing its parent container.
|
|
*/
|
|
private boolean autoFocusTransferOnDisposal = true;
|
|
|
|
void setAutoFocusTransferOnDisposal(boolean value) {
|
|
autoFocusTransferOnDisposal = value;
|
|
}
|
|
|
|
boolean isAutoFocusTransferOnDisposal() {
|
|
return autoFocusTransferOnDisposal;
|
|
}
|
|
|
|
/**
|
|
* Adds the specified popup menu to the component.
|
|
* @param popup the popup menu to be added to the component.
|
|
* @see #remove(MenuComponent)
|
|
* @exception NullPointerException if {@code popup} is {@code null}
|
|
* @since JDK1.1
|
|
*/
|
|
public void add(PopupMenu popup) {
|
|
synchronized (getTreeLock()) {
|
|
if (popup.parent != null) {
|
|
popup.parent.remove(popup);
|
|
}
|
|
if (popups == null) {
|
|
popups = new Vector<PopupMenu>();
|
|
}
|
|
popups.addElement(popup);
|
|
popup.parent = this;
|
|
|
|
if (peer != null) {
|
|
if (popup.peer == null) {
|
|
popup.addNotify();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified popup menu from the component.
|
|
* @param popup the popup menu to be removed
|
|
* @see #add(PopupMenu)
|
|
* @since JDK1.1
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
public void remove(MenuComponent popup) {
|
|
synchronized (getTreeLock()) {
|
|
if (popups == null) {
|
|
return;
|
|
}
|
|
int index = popups.indexOf(popup);
|
|
if (index >= 0) {
|
|
PopupMenu pmenu = (PopupMenu)popup;
|
|
if (pmenu.peer != null) {
|
|
pmenu.removeNotify();
|
|
}
|
|
pmenu.parent = null;
|
|
popups.removeElementAt(index);
|
|
if (popups.size() == 0) {
|
|
popups = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a string representing the state of this component. This
|
|
* method is intended to be used only for debugging purposes, and the
|
|
* content and format of the returned string may vary between
|
|
* implementations. The returned string may be empty but may not be
|
|
* <code>null</code>.
|
|
*
|
|
* @return a string representation of this component's state
|
|
* @since JDK1.0
|
|
*/
|
|
protected String paramString() {
|
|
final String thisName = Objects.toString(getName(), "");
|
|
final String invalid = isValid() ? "" : ",invalid";
|
|
final String hidden = visible ? "" : ",hidden";
|
|
final String disabled = enabled ? "" : ",disabled";
|
|
return thisName + ',' + x + ',' + y + ',' + width + 'x' + height
|
|
+ invalid + hidden + disabled;
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of this component and its values.
|
|
* @return a string representation of this component
|
|
* @since JDK1.0
|
|
*/
|
|
public String toString() {
|
|
return getClass().getName() + '[' + paramString() + ']';
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the standard system output
|
|
* stream <code>System.out</code>.
|
|
* @see java.lang.System#out
|
|
* @since JDK1.0
|
|
*/
|
|
public void list() {
|
|
list(System.out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints a listing of this component to the specified output
|
|
* stream.
|
|
* @param out a print stream
|
|
* @throws NullPointerException if {@code out} is {@code null}
|
|
* @since JDK1.0
|
|
*/
|
|
public void list(PrintStream out) {
|
|
list(out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints out a list, starting at the specified indentation, to the
|
|
* specified print stream.
|
|
* @param out a print stream
|
|
* @param indent number of spaces to indent
|
|
* @see java.io.PrintStream#println(java.lang.Object)
|
|
* @throws NullPointerException if {@code out} is {@code null}
|
|
* @since JDK1.0
|
|
*/
|
|
public void list(PrintStream out, int indent) {
|
|
for (int i = 0 ; i < indent ; i++) {
|
|
out.print(" ");
|
|
}
|
|
out.println(this);
|
|
}
|
|
|
|
/**
|
|
* Prints a listing to the specified print writer.
|
|
* @param out the print writer to print to
|
|
* @throws NullPointerException if {@code out} is {@code null}
|
|
* @since JDK1.1
|
|
*/
|
|
public void list(PrintWriter out) {
|
|
list(out, 0);
|
|
}
|
|
|
|
/**
|
|
* Prints out a list, starting at the specified indentation, to
|
|
* the specified print writer.
|
|
* @param out the print writer to print to
|
|
* @param indent the number of spaces to indent
|
|
* @throws NullPointerException if {@code out} is {@code null}
|
|
* @see java.io.PrintStream#println(java.lang.Object)
|
|
* @since JDK1.1
|
|
*/
|
|
public void list(PrintWriter out, int indent) {
|
|
for (int i = 0 ; i < indent ; i++) {
|
|
out.print(" ");
|
|
}
|
|
out.println(this);
|
|
}
|
|
|
|
/*
|
|
* Fetches the native container somewhere higher up in the component
|
|
* tree that contains this component.
|
|
*/
|
|
final Container getNativeContainer() {
|
|
Container p = getContainer();
|
|
while (p != null && p.peer instanceof LightweightPeer) {
|
|
p = p.getContainer();
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Adds a PropertyChangeListener to the listener list. The listener is
|
|
* registered for all bound properties of this class, including the
|
|
* following:
|
|
* <ul>
|
|
* <li>this Component's font ("font")</li>
|
|
* <li>this Component's background color ("background")</li>
|
|
* <li>this Component's foreground color ("foreground")</li>
|
|
* <li>this Component's focusability ("focusable")</li>
|
|
* <li>this Component's focus traversal keys enabled state
|
|
* ("focusTraversalKeysEnabled")</li>
|
|
* <li>this Component's Set of FORWARD_TRAVERSAL_KEYS
|
|
* ("forwardFocusTraversalKeys")</li>
|
|
* <li>this Component's Set of BACKWARD_TRAVERSAL_KEYS
|
|
* ("backwardFocusTraversalKeys")</li>
|
|
* <li>this Component's Set of UP_CYCLE_TRAVERSAL_KEYS
|
|
* ("upCycleFocusTraversalKeys")</li>
|
|
* <li>this Component's preferred size ("preferredSize")</li>
|
|
* <li>this Component's minimum size ("minimumSize")</li>
|
|
* <li>this Component's maximum size ("maximumSize")</li>
|
|
* <li>this Component's name ("name")</li>
|
|
* </ul>
|
|
* Note that if this <code>Component</code> is inheriting a bound property, then no
|
|
* event will be fired in response to a change in the inherited property.
|
|
* <p>
|
|
* If <code>listener</code> is <code>null</code>,
|
|
* no exception is thrown and no action is performed.
|
|
*
|
|
* @param listener the property change listener to be added
|
|
*
|
|
* @see #removePropertyChangeListener
|
|
* @see #getPropertyChangeListeners
|
|
* @see #addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
*/
|
|
public void addPropertyChangeListener(
|
|
PropertyChangeListener listener) {
|
|
synchronized (getObjectLock()) {
|
|
if (listener == null) {
|
|
return;
|
|
}
|
|
if (changeSupport == null) {
|
|
changeSupport = new PropertyChangeSupport(this);
|
|
}
|
|
changeSupport.addPropertyChangeListener(listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes a PropertyChangeListener from the listener list. This method
|
|
* should be used to remove PropertyChangeListeners that were registered
|
|
* for all bound properties of this class.
|
|
* <p>
|
|
* If listener is null, no exception is thrown and no action is performed.
|
|
*
|
|
* @param listener the PropertyChangeListener to be removed
|
|
*
|
|
* @see #addPropertyChangeListener
|
|
* @see #getPropertyChangeListeners
|
|
* @see #removePropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
|
|
*/
|
|
public void removePropertyChangeListener(
|
|
PropertyChangeListener listener) {
|
|
synchronized (getObjectLock()) {
|
|
if (listener == null || changeSupport == null) {
|
|
return;
|
|
}
|
|
changeSupport.removePropertyChangeListener(listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the property change listeners
|
|
* registered on this component.
|
|
*
|
|
* @return all of this component's <code>PropertyChangeListener</code>s
|
|
* or an empty array if no property change
|
|
* listeners are currently registered
|
|
*
|
|
* @see #addPropertyChangeListener
|
|
* @see #removePropertyChangeListener
|
|
* @see #getPropertyChangeListeners(java.lang.String)
|
|
* @see java.beans.PropertyChangeSupport#getPropertyChangeListeners
|
|
* @since 1.4
|
|
*/
|
|
public PropertyChangeListener[] getPropertyChangeListeners() {
|
|
synchronized (getObjectLock()) {
|
|
if (changeSupport == null) {
|
|
return new PropertyChangeListener[0];
|
|
}
|
|
return changeSupport.getPropertyChangeListeners();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds a PropertyChangeListener to the listener list for a specific
|
|
* property. The specified property may be user-defined, or one of the
|
|
* following:
|
|
* <ul>
|
|
* <li>this Component's font ("font")</li>
|
|
* <li>this Component's background color ("background")</li>
|
|
* <li>this Component's foreground color ("foreground")</li>
|
|
* <li>this Component's focusability ("focusable")</li>
|
|
* <li>this Component's focus traversal keys enabled state
|
|
* ("focusTraversalKeysEnabled")</li>
|
|
* <li>this Component's Set of FORWARD_TRAVERSAL_KEYS
|
|
* ("forwardFocusTraversalKeys")</li>
|
|
* <li>this Component's Set of BACKWARD_TRAVERSAL_KEYS
|
|
* ("backwardFocusTraversalKeys")</li>
|
|
* <li>this Component's Set of UP_CYCLE_TRAVERSAL_KEYS
|
|
* ("upCycleFocusTraversalKeys")</li>
|
|
* </ul>
|
|
* Note that if this <code>Component</code> is inheriting a bound property, then no
|
|
* event will be fired in response to a change in the inherited property.
|
|
* <p>
|
|
* If <code>propertyName</code> or <code>listener</code> is <code>null</code>,
|
|
* no exception is thrown and no action is taken.
|
|
*
|
|
* @param propertyName one of the property names listed above
|
|
* @param listener the property change listener to be added
|
|
*
|
|
* @see #removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
* @see #getPropertyChangeListeners(java.lang.String)
|
|
* @see #addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
*/
|
|
public void addPropertyChangeListener(
|
|
String propertyName,
|
|
PropertyChangeListener listener) {
|
|
synchronized (getObjectLock()) {
|
|
if (listener == null) {
|
|
return;
|
|
}
|
|
if (changeSupport == null) {
|
|
changeSupport = new PropertyChangeSupport(this);
|
|
}
|
|
changeSupport.addPropertyChangeListener(propertyName, listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes a <code>PropertyChangeListener</code> from the listener
|
|
* list for a specific property. This method should be used to remove
|
|
* <code>PropertyChangeListener</code>s
|
|
* that were registered for a specific bound property.
|
|
* <p>
|
|
* If <code>propertyName</code> or <code>listener</code> is <code>null</code>,
|
|
* no exception is thrown and no action is taken.
|
|
*
|
|
* @param propertyName a valid property name
|
|
* @param listener the PropertyChangeListener to be removed
|
|
*
|
|
* @see #addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
* @see #getPropertyChangeListeners(java.lang.String)
|
|
* @see #removePropertyChangeListener(java.beans.PropertyChangeListener)
|
|
*/
|
|
public void removePropertyChangeListener(
|
|
String propertyName,
|
|
PropertyChangeListener listener) {
|
|
synchronized (getObjectLock()) {
|
|
if (listener == null || changeSupport == null) {
|
|
return;
|
|
}
|
|
changeSupport.removePropertyChangeListener(propertyName, listener);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all the listeners which have been associated
|
|
* with the named property.
|
|
*
|
|
* @return all of the <code>PropertyChangeListener</code>s associated with
|
|
* the named property; if no such listeners have been added or
|
|
* if <code>propertyName</code> is <code>null</code>, an empty
|
|
* array is returned
|
|
*
|
|
* @see #addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
* @see #removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)
|
|
* @see #getPropertyChangeListeners
|
|
* @since 1.4
|
|
*/
|
|
public PropertyChangeListener[] getPropertyChangeListeners(
|
|
String propertyName) {
|
|
synchronized (getObjectLock()) {
|
|
if (changeSupport == null) {
|
|
return new PropertyChangeListener[0];
|
|
}
|
|
return changeSupport.getPropertyChangeListeners(propertyName);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Support for reporting bound property changes for Object properties.
|
|
* This method can be called when a bound property has changed and it will
|
|
* send the appropriate PropertyChangeEvent to any registered
|
|
* PropertyChangeListeners.
|
|
*
|
|
* @param propertyName the property whose value has changed
|
|
* @param oldValue the property's previous value
|
|
* @param newValue the property's new value
|
|
*/
|
|
protected void firePropertyChange(String propertyName,
|
|
Object oldValue, Object newValue) {
|
|
PropertyChangeSupport changeSupport;
|
|
synchronized (getObjectLock()) {
|
|
changeSupport = this.changeSupport;
|
|
}
|
|
if (changeSupport == null ||
|
|
(oldValue != null && newValue != null && oldValue.equals(newValue))) {
|
|
return;
|
|
}
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
|
}
|
|
|
|
/**
|
|
* Support for reporting bound property changes for boolean properties.
|
|
* This method can be called when a bound property has changed and it will
|
|
* send the appropriate PropertyChangeEvent to any registered
|
|
* PropertyChangeListeners.
|
|
*
|
|
* @param propertyName the property whose value has changed
|
|
* @param oldValue the property's previous value
|
|
* @param newValue the property's new value
|
|
* @since 1.4
|
|
*/
|
|
protected void firePropertyChange(String propertyName,
|
|
boolean oldValue, boolean newValue) {
|
|
PropertyChangeSupport changeSupport = this.changeSupport;
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
|
}
|
|
|
|
/**
|
|
* Support for reporting bound property changes for integer properties.
|
|
* This method can be called when a bound property has changed and it will
|
|
* send the appropriate PropertyChangeEvent to any registered
|
|
* PropertyChangeListeners.
|
|
*
|
|
* @param propertyName the property whose value has changed
|
|
* @param oldValue the property's previous value
|
|
* @param newValue the property's new value
|
|
* @since 1.4
|
|
*/
|
|
protected void firePropertyChange(String propertyName,
|
|
int oldValue, int newValue) {
|
|
PropertyChangeSupport changeSupport = this.changeSupport;
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
|
}
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a byte)
|
|
* @param newValue the new value of the property (as a byte)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, byte oldValue, byte newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, Byte.valueOf(oldValue), Byte.valueOf(newValue));
|
|
}
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a char)
|
|
* @param newValue the new value of the property (as a char)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, char oldValue, char newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, new Character(oldValue), new Character(newValue));
|
|
}
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a short)
|
|
* @param newValue the old value of the property (as a short)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, short oldValue, short newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, Short.valueOf(oldValue), Short.valueOf(newValue));
|
|
}
|
|
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a long)
|
|
* @param newValue the new value of the property (as a long)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, long oldValue, long newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, Long.valueOf(oldValue), Long.valueOf(newValue));
|
|
}
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a float)
|
|
* @param newValue the new value of the property (as a float)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, float oldValue, float newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, Float.valueOf(oldValue), Float.valueOf(newValue));
|
|
}
|
|
|
|
/**
|
|
* Reports a bound property change.
|
|
*
|
|
* @param propertyName the programmatic name of the property
|
|
* that was changed
|
|
* @param oldValue the old value of the property (as a double)
|
|
* @param newValue the new value of the property (as a double)
|
|
* @see #firePropertyChange(java.lang.String, java.lang.Object,
|
|
* java.lang.Object)
|
|
* @since 1.5
|
|
*/
|
|
public void firePropertyChange(String propertyName, double oldValue, double newValue) {
|
|
if (changeSupport == null || oldValue == newValue) {
|
|
return;
|
|
}
|
|
firePropertyChange(propertyName, Double.valueOf(oldValue), Double.valueOf(newValue));
|
|
}
|
|
|
|
|
|
// Serialization support.
|
|
|
|
/**
|
|
* Component Serialized Data Version.
|
|
*
|
|
* @serial
|
|
*/
|
|
private int componentSerializedDataVersion = 4;
|
|
|
|
/**
|
|
* This hack is for Swing serialization. It will invoke
|
|
* the Swing package private method <code>compWriteObjectNotify</code>.
|
|
*/
|
|
private void doSwingSerialization() {
|
|
Package swingPackage = Package.getPackage("javax.swing");
|
|
// For Swing serialization to correctly work Swing needs to
|
|
// be notified before Component does it's serialization. This
|
|
// hack accomodates this.
|
|
//
|
|
// Swing classes MUST be loaded by the bootstrap class loader,
|
|
// otherwise we don't consider them.
|
|
for (Class<?> klass = Component.this.getClass(); klass != null;
|
|
klass = klass.getSuperclass()) {
|
|
if (klass.getPackage() == swingPackage &&
|
|
klass.getClassLoader() == null) {
|
|
final Class<?> swingClass = klass;
|
|
// Find the first override of the compWriteObjectNotify method
|
|
Method[] methods = AccessController.doPrivileged(
|
|
new PrivilegedAction<Method[]>() {
|
|
public Method[] run() {
|
|
return swingClass.getDeclaredMethods();
|
|
}
|
|
});
|
|
for (int counter = methods.length - 1; counter >= 0;
|
|
counter--) {
|
|
final Method method = methods[counter];
|
|
if (method.getName().equals("compWriteObjectNotify")){
|
|
// We found it, use doPrivileged to make it accessible
|
|
// to use.
|
|
AccessController.doPrivileged(new PrivilegedAction<Void>() {
|
|
public Void run() {
|
|
method.setAccessible(true);
|
|
return null;
|
|
}
|
|
});
|
|
// Invoke the method
|
|
try {
|
|
method.invoke(this, (Object[]) null);
|
|
} catch (IllegalAccessException iae) {
|
|
} catch (InvocationTargetException ite) {
|
|
}
|
|
// We're done, bail.
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Writes default serializable fields to stream. Writes
|
|
* a variety of serializable listeners as optional data.
|
|
* The non-serializable listeners are detected and
|
|
* no attempt is made to serialize them.
|
|
*
|
|
* @param s the <code>ObjectOutputStream</code> to write
|
|
* @serialData <code>null</code> terminated sequence of
|
|
* 0 or more pairs; the pair consists of a <code>String</code>
|
|
* and an <code>Object</code>; the <code>String</code> indicates
|
|
* the type of object and is one of the following (as of 1.4):
|
|
* <code>componentListenerK</code> indicating an
|
|
* <code>ComponentListener</code> object;
|
|
* <code>focusListenerK</code> indicating an
|
|
* <code>FocusListener</code> object;
|
|
* <code>keyListenerK</code> indicating an
|
|
* <code>KeyListener</code> object;
|
|
* <code>mouseListenerK</code> indicating an
|
|
* <code>MouseListener</code> object;
|
|
* <code>mouseMotionListenerK</code> indicating an
|
|
* <code>MouseMotionListener</code> object;
|
|
* <code>inputMethodListenerK</code> indicating an
|
|
* <code>InputMethodListener</code> object;
|
|
* <code>hierarchyListenerK</code> indicating an
|
|
* <code>HierarchyListener</code> object;
|
|
* <code>hierarchyBoundsListenerK</code> indicating an
|
|
* <code>HierarchyBoundsListener</code> object;
|
|
* <code>mouseWheelListenerK</code> indicating an
|
|
* <code>MouseWheelListener</code> object
|
|
* @serialData an optional <code>ComponentOrientation</code>
|
|
* (after <code>inputMethodListener</code>, as of 1.2)
|
|
*
|
|
* @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
|
|
* @see #componentListenerK
|
|
* @see #focusListenerK
|
|
* @see #keyListenerK
|
|
* @see #mouseListenerK
|
|
* @see #mouseMotionListenerK
|
|
* @see #inputMethodListenerK
|
|
* @see #hierarchyListenerK
|
|
* @see #hierarchyBoundsListenerK
|
|
* @see #mouseWheelListenerK
|
|
* @see #readObject(ObjectInputStream)
|
|
*/
|
|
private void writeObject(ObjectOutputStream s)
|
|
throws IOException
|
|
{
|
|
doSwingSerialization();
|
|
|
|
s.defaultWriteObject();
|
|
|
|
AWTEventMulticaster.save(s, componentListenerK, componentListener);
|
|
AWTEventMulticaster.save(s, focusListenerK, focusListener);
|
|
AWTEventMulticaster.save(s, keyListenerK, keyListener);
|
|
AWTEventMulticaster.save(s, mouseListenerK, mouseListener);
|
|
AWTEventMulticaster.save(s, mouseMotionListenerK, mouseMotionListener);
|
|
AWTEventMulticaster.save(s, inputMethodListenerK, inputMethodListener);
|
|
|
|
s.writeObject(null);
|
|
s.writeObject(componentOrientation);
|
|
|
|
AWTEventMulticaster.save(s, hierarchyListenerK, hierarchyListener);
|
|
AWTEventMulticaster.save(s, hierarchyBoundsListenerK,
|
|
hierarchyBoundsListener);
|
|
s.writeObject(null);
|
|
|
|
AWTEventMulticaster.save(s, mouseWheelListenerK, mouseWheelListener);
|
|
s.writeObject(null);
|
|
|
|
}
|
|
|
|
/**
|
|
* Reads the <code>ObjectInputStream</code> and if it isn't
|
|
* <code>null</code> adds a listener to receive a variety
|
|
* of events fired by the component.
|
|
* Unrecognized keys or values will be ignored.
|
|
*
|
|
* @param s the <code>ObjectInputStream</code> to read
|
|
* @see #writeObject(ObjectOutputStream)
|
|
*/
|
|
private void readObject(ObjectInputStream s)
|
|
throws ClassNotFoundException, IOException
|
|
{
|
|
objectLock = new Object();
|
|
|
|
acc = AccessController.getContext();
|
|
|
|
s.defaultReadObject();
|
|
|
|
appContext = AppContext.getAppContext();
|
|
coalescingEnabled = checkCoalescing();
|
|
if (componentSerializedDataVersion < 4) {
|
|
// These fields are non-transient and rely on default
|
|
// serialization. However, the default values are insufficient,
|
|
// so we need to set them explicitly for object data streams prior
|
|
// to 1.4.
|
|
focusable = true;
|
|
isFocusTraversableOverridden = FOCUS_TRAVERSABLE_UNKNOWN;
|
|
initializeFocusTraversalKeys();
|
|
focusTraversalKeysEnabled = true;
|
|
}
|
|
|
|
Object keyOrNull;
|
|
while(null != (keyOrNull = s.readObject())) {
|
|
String key = ((String)keyOrNull).intern();
|
|
|
|
if (componentListenerK == key)
|
|
addComponentListener((ComponentListener)(s.readObject()));
|
|
|
|
else if (focusListenerK == key)
|
|
addFocusListener((FocusListener)(s.readObject()));
|
|
|
|
else if (keyListenerK == key)
|
|
addKeyListener((KeyListener)(s.readObject()));
|
|
|
|
else if (mouseListenerK == key)
|
|
addMouseListener((MouseListener)(s.readObject()));
|
|
|
|
else if (mouseMotionListenerK == key)
|
|
addMouseMotionListener((MouseMotionListener)(s.readObject()));
|
|
|
|
else if (inputMethodListenerK == key)
|
|
addInputMethodListener((InputMethodListener)(s.readObject()));
|
|
|
|
else // skip value for unrecognized key
|
|
s.readObject();
|
|
|
|
}
|
|
|
|
// Read the component's orientation if it's present
|
|
Object orient = null;
|
|
|
|
try {
|
|
orient = s.readObject();
|
|
} catch (java.io.OptionalDataException e) {
|
|
// JDK 1.1 instances will not have this optional data.
|
|
// e.eof will be true to indicate that there is no more
|
|
// data available for this object.
|
|
// If e.eof is not true, throw the exception as it
|
|
// might have been caused by reasons unrelated to
|
|
// componentOrientation.
|
|
|
|
if (!e.eof) {
|
|
throw (e);
|
|
}
|
|
}
|
|
|
|
if (orient != null) {
|
|
componentOrientation = (ComponentOrientation)orient;
|
|
} else {
|
|
componentOrientation = ComponentOrientation.UNKNOWN;
|
|
}
|
|
|
|
try {
|
|
while(null != (keyOrNull = s.readObject())) {
|
|
String key = ((String)keyOrNull).intern();
|
|
|
|
if (hierarchyListenerK == key) {
|
|
addHierarchyListener((HierarchyListener)(s.readObject()));
|
|
}
|
|
else if (hierarchyBoundsListenerK == key) {
|
|
addHierarchyBoundsListener((HierarchyBoundsListener)
|
|
(s.readObject()));
|
|
}
|
|
else {
|
|
// skip value for unrecognized key
|
|
s.readObject();
|
|
}
|
|
}
|
|
} catch (java.io.OptionalDataException e) {
|
|
// JDK 1.1/1.2 instances will not have this optional data.
|
|
// e.eof will be true to indicate that there is no more
|
|
// data available for this object.
|
|
// If e.eof is not true, throw the exception as it
|
|
// might have been caused by reasons unrelated to
|
|
// hierarchy and hierarchyBounds listeners.
|
|
|
|
if (!e.eof) {
|
|
throw (e);
|
|
}
|
|
}
|
|
|
|
try {
|
|
while (null != (keyOrNull = s.readObject())) {
|
|
String key = ((String)keyOrNull).intern();
|
|
|
|
if (mouseWheelListenerK == key) {
|
|
addMouseWheelListener((MouseWheelListener)(s.readObject()));
|
|
}
|
|
else {
|
|
// skip value for unrecognized key
|
|
s.readObject();
|
|
}
|
|
}
|
|
} catch (java.io.OptionalDataException e) {
|
|
// pre-1.3 instances will not have this optional data.
|
|
// e.eof will be true to indicate that there is no more
|
|
// data available for this object.
|
|
// If e.eof is not true, throw the exception as it
|
|
// might have been caused by reasons unrelated to
|
|
// mouse wheel listeners
|
|
|
|
if (!e.eof) {
|
|
throw (e);
|
|
}
|
|
}
|
|
|
|
if (popups != null) {
|
|
int npopups = popups.size();
|
|
for (int i = 0 ; i < npopups ; i++) {
|
|
PopupMenu popup = popups.elementAt(i);
|
|
popup.parent = this;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the language-sensitive orientation that is to be used to order
|
|
* the elements or text within this component. Language-sensitive
|
|
* <code>LayoutManager</code> and <code>Component</code>
|
|
* subclasses will use this property to
|
|
* determine how to lay out and draw components.
|
|
* <p>
|
|
* At construction time, a component's orientation is set to
|
|
* <code>ComponentOrientation.UNKNOWN</code>,
|
|
* indicating that it has not been specified
|
|
* explicitly. The UNKNOWN orientation behaves the same as
|
|
* <code>ComponentOrientation.LEFT_TO_RIGHT</code>.
|
|
* <p>
|
|
* To set the orientation of a single component, use this method.
|
|
* To set the orientation of an entire component
|
|
* hierarchy, use
|
|
* {@link #applyComponentOrientation applyComponentOrientation}.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
*
|
|
* @see ComponentOrientation
|
|
* @see #invalidate
|
|
*
|
|
* @author Laura Werner, IBM
|
|
* @beaninfo
|
|
* bound: true
|
|
*/
|
|
public void setComponentOrientation(ComponentOrientation o) {
|
|
ComponentOrientation oldValue = componentOrientation;
|
|
componentOrientation = o;
|
|
|
|
// This is a bound property, so report the change to
|
|
// any registered listeners. (Cheap if there are none.)
|
|
firePropertyChange("componentOrientation", oldValue, o);
|
|
|
|
// This could change the preferred size of the Component.
|
|
invalidateIfValid();
|
|
}
|
|
|
|
/**
|
|
* Retrieves the language-sensitive orientation that is to be used to order
|
|
* the elements or text within this component. <code>LayoutManager</code>
|
|
* and <code>Component</code>
|
|
* subclasses that wish to respect orientation should call this method to
|
|
* get the component's orientation before performing layout or drawing.
|
|
*
|
|
* @see ComponentOrientation
|
|
*
|
|
* @author Laura Werner, IBM
|
|
*/
|
|
public ComponentOrientation getComponentOrientation() {
|
|
return componentOrientation;
|
|
}
|
|
|
|
/**
|
|
* Sets the <code>ComponentOrientation</code> property of this component
|
|
* and all components contained within it.
|
|
* <p>
|
|
* This method changes layout-related information, and therefore,
|
|
* invalidates the component hierarchy.
|
|
*
|
|
*
|
|
* @param orientation the new component orientation of this component and
|
|
* the components contained within it.
|
|
* @exception NullPointerException if <code>orientation</code> is null.
|
|
* @see #setComponentOrientation
|
|
* @see #getComponentOrientation
|
|
* @see #invalidate
|
|
* @since 1.4
|
|
*/
|
|
public void applyComponentOrientation(ComponentOrientation orientation) {
|
|
if (orientation == null) {
|
|
throw new NullPointerException();
|
|
}
|
|
setComponentOrientation(orientation);
|
|
}
|
|
|
|
final boolean canBeFocusOwner() {
|
|
// It is enabled, visible, focusable.
|
|
if (isEnabled() && isDisplayable() && isVisible() && isFocusable()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks that this component meets the prerequesites to be focus owner:
|
|
* - it is enabled, visible, focusable
|
|
* - it's parents are all enabled and showing
|
|
* - top-level window is focusable
|
|
* - if focus cycle root has DefaultFocusTraversalPolicy then it also checks that this policy accepts
|
|
* this component as focus owner
|
|
* @since 1.5
|
|
*/
|
|
final boolean canBeFocusOwnerRecursively() {
|
|
// - it is enabled, visible, focusable
|
|
if (!canBeFocusOwner()) {
|
|
return false;
|
|
}
|
|
|
|
// - it's parents are all enabled and showing
|
|
synchronized(getTreeLock()) {
|
|
if (parent != null) {
|
|
return parent.canContainFocusOwner(this);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Fix the location of the HW component in a LW container hierarchy.
|
|
*/
|
|
final void relocateComponent() {
|
|
synchronized (getTreeLock()) {
|
|
if (peer == null) {
|
|
return;
|
|
}
|
|
int nativeX = x;
|
|
int nativeY = y;
|
|
for (Component cont = getContainer();
|
|
cont != null && cont.isLightweight();
|
|
cont = cont.getContainer())
|
|
{
|
|
nativeX += cont.x;
|
|
nativeY += cont.y;
|
|
}
|
|
peer.setBounds(nativeX, nativeY, width, height,
|
|
ComponentPeer.SET_LOCATION);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the <code>Window</code> ancestor of the component.
|
|
* @return Window ancestor of the component or component by itself if it is Window;
|
|
* null, if component is not a part of window hierarchy
|
|
*/
|
|
Window getContainingWindow() {
|
|
return SunToolkit.getContainingWindow(this);
|
|
}
|
|
|
|
/**
|
|
* Initialize JNI field and method IDs
|
|
*/
|
|
private static native void initIDs();
|
|
|
|
/*
|
|
* --- Accessibility Support ---
|
|
*
|
|
* Component will contain all of the methods in interface Accessible,
|
|
* though it won't actually implement the interface - that will be up
|
|
* to the individual objects which extend Component.
|
|
*/
|
|
|
|
/**
|
|
* The {@code AccessibleContext} associated with this {@code Component}.
|
|
*/
|
|
protected AccessibleContext accessibleContext = null;
|
|
|
|
/**
|
|
* Gets the <code>AccessibleContext</code> associated
|
|
* with this <code>Component</code>.
|
|
* The method implemented by this base
|
|
* class returns null. Classes that extend <code>Component</code>
|
|
* should implement this method to return the
|
|
* <code>AccessibleContext</code> associated with the subclass.
|
|
*
|
|
*
|
|
* @return the <code>AccessibleContext</code> of this
|
|
* <code>Component</code>
|
|
* @since 1.3
|
|
*/
|
|
public AccessibleContext getAccessibleContext() {
|
|
return accessibleContext;
|
|
}
|
|
|
|
/**
|
|
* Inner class of Component used to provide default support for
|
|
* accessibility. This class is not meant to be used directly by
|
|
* application developers, but is instead meant only to be
|
|
* subclassed by component developers.
|
|
* <p>
|
|
* The class used to obtain the accessible role for this object.
|
|
* @since 1.3
|
|
*/
|
|
protected abstract class AccessibleAWTComponent extends AccessibleContext
|
|
implements Serializable, AccessibleComponent {
|
|
|
|
private static final long serialVersionUID = 642321655757800191L;
|
|
|
|
/**
|
|
* Though the class is abstract, this should be called by
|
|
* all sub-classes.
|
|
*/
|
|
protected AccessibleAWTComponent() {
|
|
}
|
|
|
|
/**
|
|
* Number of PropertyChangeListener objects registered. It's used
|
|
* to add/remove ComponentListener and FocusListener to track
|
|
* target Component's state.
|
|
*/
|
|
private volatile transient int propertyListenersCount = 0;
|
|
|
|
protected ComponentListener accessibleAWTComponentHandler = null;
|
|
protected FocusListener accessibleAWTFocusHandler = null;
|
|
|
|
/**
|
|
* Fire PropertyChange listener, if one is registered,
|
|
* when shown/hidden..
|
|
* @since 1.3
|
|
*/
|
|
protected class AccessibleAWTComponentHandler implements ComponentListener {
|
|
public void componentHidden(ComponentEvent e) {
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
AccessibleState.VISIBLE, null);
|
|
}
|
|
}
|
|
|
|
public void componentShown(ComponentEvent e) {
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.VISIBLE);
|
|
}
|
|
}
|
|
|
|
public void componentMoved(ComponentEvent e) {
|
|
}
|
|
|
|
public void componentResized(ComponentEvent e) {
|
|
}
|
|
} // inner class AccessibleAWTComponentHandler
|
|
|
|
|
|
/**
|
|
* Fire PropertyChange listener, if one is registered,
|
|
* when focus events happen
|
|
* @since 1.3
|
|
*/
|
|
protected class AccessibleAWTFocusHandler implements FocusListener {
|
|
public void focusGained(FocusEvent event) {
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.FOCUSED);
|
|
}
|
|
}
|
|
public void focusLost(FocusEvent event) {
|
|
if (accessibleContext != null) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
AccessibleState.FOCUSED, null);
|
|
}
|
|
}
|
|
} // inner class AccessibleAWTFocusHandler
|
|
|
|
|
|
/**
|
|
* Adds a <code>PropertyChangeListener</code> to the listener list.
|
|
*
|
|
* @param listener the property change listener to be added
|
|
*/
|
|
public void addPropertyChangeListener(PropertyChangeListener listener) {
|
|
if (accessibleAWTComponentHandler == null) {
|
|
accessibleAWTComponentHandler = new AccessibleAWTComponentHandler();
|
|
}
|
|
if (accessibleAWTFocusHandler == null) {
|
|
accessibleAWTFocusHandler = new AccessibleAWTFocusHandler();
|
|
}
|
|
if (propertyListenersCount++ == 0) {
|
|
Component.this.addComponentListener(accessibleAWTComponentHandler);
|
|
Component.this.addFocusListener(accessibleAWTFocusHandler);
|
|
}
|
|
super.addPropertyChangeListener(listener);
|
|
}
|
|
|
|
/**
|
|
* Remove a PropertyChangeListener from the listener list.
|
|
* This removes a PropertyChangeListener that was registered
|
|
* for all properties.
|
|
*
|
|
* @param listener The PropertyChangeListener to be removed
|
|
*/
|
|
public void removePropertyChangeListener(PropertyChangeListener listener) {
|
|
if (--propertyListenersCount == 0) {
|
|
Component.this.removeComponentListener(accessibleAWTComponentHandler);
|
|
Component.this.removeFocusListener(accessibleAWTFocusHandler);
|
|
}
|
|
super.removePropertyChangeListener(listener);
|
|
}
|
|
|
|
// AccessibleContext methods
|
|
//
|
|
/**
|
|
* Gets the accessible name of this object. This should almost never
|
|
* return <code>java.awt.Component.getName()</code>,
|
|
* as that generally isn't a localized name,
|
|
* and doesn't have meaning for the user. If the
|
|
* object is fundamentally a text object (e.g. a menu item), the
|
|
* accessible name should be the text of the object (e.g. "save").
|
|
* If the object has a tooltip, the tooltip text may also be an
|
|
* appropriate String to return.
|
|
*
|
|
* @return the localized name of the object -- can be
|
|
* <code>null</code> if this
|
|
* object does not have a name
|
|
* @see javax.accessibility.AccessibleContext#setAccessibleName
|
|
*/
|
|
public String getAccessibleName() {
|
|
return accessibleName;
|
|
}
|
|
|
|
/**
|
|
* Gets the accessible description of this object. This should be
|
|
* a concise, localized description of what this object is - what
|
|
* is its meaning to the user. If the object has a tooltip, the
|
|
* tooltip text may be an appropriate string to return, assuming
|
|
* it contains a concise description of the object (instead of just
|
|
* the name of the object - e.g. a "Save" icon on a toolbar that
|
|
* had "save" as the tooltip text shouldn't return the tooltip
|
|
* text as the description, but something like "Saves the current
|
|
* text document" instead).
|
|
*
|
|
* @return the localized description of the object -- can be
|
|
* <code>null</code> if this object does not have a description
|
|
* @see javax.accessibility.AccessibleContext#setAccessibleDescription
|
|
*/
|
|
public String getAccessibleDescription() {
|
|
return accessibleDescription;
|
|
}
|
|
|
|
/**
|
|
* Gets the role of this object.
|
|
*
|
|
* @return an instance of <code>AccessibleRole</code>
|
|
* describing the role of the object
|
|
* @see javax.accessibility.AccessibleRole
|
|
*/
|
|
public AccessibleRole getAccessibleRole() {
|
|
return AccessibleRole.AWT_COMPONENT;
|
|
}
|
|
|
|
/**
|
|
* Gets the state of this object.
|
|
*
|
|
* @return an instance of <code>AccessibleStateSet</code>
|
|
* containing the current state set of the object
|
|
* @see javax.accessibility.AccessibleState
|
|
*/
|
|
public AccessibleStateSet getAccessibleStateSet() {
|
|
return Component.this.getAccessibleStateSet();
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>Accessible</code> parent of this object.
|
|
* If the parent of this object implements <code>Accessible</code>,
|
|
* this method should simply return <code>getParent</code>.
|
|
*
|
|
* @return the <code>Accessible</code> parent of this
|
|
* object -- can be <code>null</code> if this
|
|
* object does not have an <code>Accessible</code> parent
|
|
*/
|
|
public Accessible getAccessibleParent() {
|
|
if (accessibleParent != null) {
|
|
return accessibleParent;
|
|
} else {
|
|
Container parent = getParent();
|
|
if (parent instanceof Accessible) {
|
|
return (Accessible) parent;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Gets the index of this object in its accessible parent.
|
|
*
|
|
* @return the index of this object in its parent; or -1 if this
|
|
* object does not have an accessible parent
|
|
* @see #getAccessibleParent
|
|
*/
|
|
public int getAccessibleIndexInParent() {
|
|
return Component.this.getAccessibleIndexInParent();
|
|
}
|
|
|
|
/**
|
|
* Returns the number of accessible children in the object. If all
|
|
* of the children of this object implement <code>Accessible</code>,
|
|
* then this method should return the number of children of this object.
|
|
*
|
|
* @return the number of accessible children in the object
|
|
*/
|
|
public int getAccessibleChildrenCount() {
|
|
return 0; // Components don't have children
|
|
}
|
|
|
|
/**
|
|
* Returns the nth <code>Accessible</code> child of the object.
|
|
*
|
|
* @param i zero-based index of child
|
|
* @return the nth <code>Accessible</code> child of the object
|
|
*/
|
|
public Accessible getAccessibleChild(int i) {
|
|
return null; // Components don't have children
|
|
}
|
|
|
|
/**
|
|
* Returns the locale of this object.
|
|
*
|
|
* @return the locale of this object
|
|
*/
|
|
public Locale getLocale() {
|
|
return Component.this.getLocale();
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>AccessibleComponent</code> associated
|
|
* with this object if one exists.
|
|
* Otherwise return <code>null</code>.
|
|
*
|
|
* @return the component
|
|
*/
|
|
public AccessibleComponent getAccessibleComponent() {
|
|
return this;
|
|
}
|
|
|
|
|
|
// AccessibleComponent methods
|
|
//
|
|
/**
|
|
* Gets the background color of this object.
|
|
*
|
|
* @return the background color, if supported, of the object;
|
|
* otherwise, <code>null</code>
|
|
*/
|
|
public Color getBackground() {
|
|
return Component.this.getBackground();
|
|
}
|
|
|
|
/**
|
|
* Sets the background color of this object.
|
|
* (For transparency, see <code>isOpaque</code>.)
|
|
*
|
|
* @param c the new <code>Color</code> for the background
|
|
* @see Component#isOpaque
|
|
*/
|
|
public void setBackground(Color c) {
|
|
Component.this.setBackground(c);
|
|
}
|
|
|
|
/**
|
|
* Gets the foreground color of this object.
|
|
*
|
|
* @return the foreground color, if supported, of the object;
|
|
* otherwise, <code>null</code>
|
|
*/
|
|
public Color getForeground() {
|
|
return Component.this.getForeground();
|
|
}
|
|
|
|
/**
|
|
* Sets the foreground color of this object.
|
|
*
|
|
* @param c the new <code>Color</code> for the foreground
|
|
*/
|
|
public void setForeground(Color c) {
|
|
Component.this.setForeground(c);
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>Cursor</code> of this object.
|
|
*
|
|
* @return the <code>Cursor</code>, if supported,
|
|
* of the object; otherwise, <code>null</code>
|
|
*/
|
|
public Cursor getCursor() {
|
|
return Component.this.getCursor();
|
|
}
|
|
|
|
/**
|
|
* Sets the <code>Cursor</code> of this object.
|
|
* <p>
|
|
* The method may have no visual effect if the Java platform
|
|
* implementation and/or the native system do not support
|
|
* changing the mouse cursor shape.
|
|
* @param cursor the new <code>Cursor</code> for the object
|
|
*/
|
|
public void setCursor(Cursor cursor) {
|
|
Component.this.setCursor(cursor);
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>Font</code> of this object.
|
|
*
|
|
* @return the <code>Font</code>, if supported,
|
|
* for the object; otherwise, <code>null</code>
|
|
*/
|
|
public Font getFont() {
|
|
return Component.this.getFont();
|
|
}
|
|
|
|
/**
|
|
* Sets the <code>Font</code> of this object.
|
|
*
|
|
* @param f the new <code>Font</code> for the object
|
|
*/
|
|
public void setFont(Font f) {
|
|
Component.this.setFont(f);
|
|
}
|
|
|
|
/**
|
|
* Gets the <code>FontMetrics</code> of this object.
|
|
*
|
|
* @param f the <code>Font</code>
|
|
* @return the <code>FontMetrics</code>, if supported,
|
|
* the object; otherwise, <code>null</code>
|
|
* @see #getFont
|
|
*/
|
|
public FontMetrics getFontMetrics(Font f) {
|
|
if (f == null) {
|
|
return null;
|
|
} else {
|
|
return Component.this.getFontMetrics(f);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines if the object is enabled.
|
|
*
|
|
* @return true if object is enabled; otherwise, false
|
|
*/
|
|
public boolean isEnabled() {
|
|
return Component.this.isEnabled();
|
|
}
|
|
|
|
/**
|
|
* Sets the enabled state of the object.
|
|
*
|
|
* @param b if true, enables this object; otherwise, disables it
|
|
*/
|
|
public void setEnabled(boolean b) {
|
|
boolean old = Component.this.isEnabled();
|
|
Component.this.setEnabled(b);
|
|
if (b != old) {
|
|
if (accessibleContext != null) {
|
|
if (b) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.ENABLED);
|
|
} else {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
AccessibleState.ENABLED, null);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines if the object is visible. Note: this means that the
|
|
* object intends to be visible; however, it may not in fact be
|
|
* showing on the screen because one of the objects that this object
|
|
* is contained by is not visible. To determine if an object is
|
|
* showing on the screen, use <code>isShowing</code>.
|
|
*
|
|
* @return true if object is visible; otherwise, false
|
|
*/
|
|
public boolean isVisible() {
|
|
return Component.this.isVisible();
|
|
}
|
|
|
|
/**
|
|
* Sets the visible state of the object.
|
|
*
|
|
* @param b if true, shows this object; otherwise, hides it
|
|
*/
|
|
public void setVisible(boolean b) {
|
|
boolean old = Component.this.isVisible();
|
|
Component.this.setVisible(b);
|
|
if (b != old) {
|
|
if (accessibleContext != null) {
|
|
if (b) {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
null, AccessibleState.VISIBLE);
|
|
} else {
|
|
accessibleContext.firePropertyChange(
|
|
AccessibleContext.ACCESSIBLE_STATE_PROPERTY,
|
|
AccessibleState.VISIBLE, null);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Determines if the object is showing. This is determined by checking
|
|
* the visibility of the object and ancestors of the object. Note:
|
|
* this will return true even if the object is obscured by another
|
|
* (for example, it happens to be underneath a menu that was pulled
|
|
* down).
|
|
*
|
|
* @return true if object is showing; otherwise, false
|
|
*/
|
|
public boolean isShowing() {
|
|
return Component.this.isShowing();
|
|
}
|
|
|
|
/**
|
|
* Checks whether the specified point is within this object's bounds,
|
|
* where the point's x and y coordinates are defined to be relative to
|
|
* the coordinate system of the object.
|
|
*
|
|
* @param p the <code>Point</code> relative to the
|
|
* coordinate system of the object
|
|
* @return true if object contains <code>Point</code>; otherwise false
|
|
*/
|
|
public boolean contains(Point p) {
|
|
return Component.this.contains(p);
|
|
}
|
|
|
|
/**
|
|
* Returns the location of the object on the screen.
|
|
*
|
|
* @return location of object on screen -- can be
|
|
* <code>null</code> if this object is not on the screen
|
|
*/
|
|
public Point getLocationOnScreen() {
|
|
synchronized (Component.this.getTreeLock()) {
|
|
if (Component.this.isShowing()) {
|
|
return Component.this.getLocationOnScreen();
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the location of the object relative to the parent in the form
|
|
* of a point specifying the object's top-left corner in the screen's
|
|
* coordinate space.
|
|
*
|
|
* @return an instance of Point representing the top-left corner of
|
|
* the object's bounds in the coordinate space of the screen;
|
|
* <code>null</code> if this object or its parent are not on the screen
|
|
*/
|
|
public Point getLocation() {
|
|
return Component.this.getLocation();
|
|
}
|
|
|
|
/**
|
|
* Sets the location of the object relative to the parent.
|
|
* @param p the coordinates of the object
|
|
*/
|
|
public void setLocation(Point p) {
|
|
Component.this.setLocation(p);
|
|
}
|
|
|
|
/**
|
|
* Gets the bounds of this object in the form of a Rectangle object.
|
|
* The bounds specify this object's width, height, and location
|
|
* relative to its parent.
|
|
*
|
|
* @return a rectangle indicating this component's bounds;
|
|
* <code>null</code> if this object is not on the screen
|
|
*/
|
|
public Rectangle getBounds() {
|
|
return Component.this.getBounds();
|
|
}
|
|
|
|
/**
|
|
* Sets the bounds of this object in the form of a
|
|
* <code>Rectangle</code> object.
|
|
* The bounds specify this object's width, height, and location
|
|
* relative to its parent.
|
|
*
|
|
* @param r a rectangle indicating this component's bounds
|
|
*/
|
|
public void setBounds(Rectangle r) {
|
|
Component.this.setBounds(r);
|
|
}
|
|
|
|
/**
|
|
* Returns the size of this object in the form of a
|
|
* <code>Dimension</code> object. The height field of the
|
|
* <code>Dimension</code> object contains this objects's
|
|
* height, and the width field of the <code>Dimension</code>
|
|
* object contains this object's width.
|
|
*
|
|
* @return a <code>Dimension</code> object that indicates
|
|
* the size of this component; <code>null</code> if
|
|
* this object is not on the screen
|
|
*/
|
|
public Dimension getSize() {
|
|
return Component.this.getSize();
|
|
}
|
|
|
|
/**
|
|
* Resizes this object so that it has width and height.
|
|
*
|
|
* @param d - the dimension specifying the new size of the object
|
|
*/
|
|
public void setSize(Dimension d) {
|
|
Component.this.setSize(d);
|
|
}
|
|
|
|
/**
|
|
* Returns the <code>Accessible</code> child,
|
|
* if one exists, contained at the local
|
|
* coordinate <code>Point</code>. Otherwise returns
|
|
* <code>null</code>.
|
|
*
|
|
* @param p the point defining the top-left corner of
|
|
* the <code>Accessible</code>, given in the
|
|
* coordinate space of the object's parent
|
|
* @return the <code>Accessible</code>, if it exists,
|
|
* at the specified location; else <code>null</code>
|
|
*/
|
|
public Accessible getAccessibleAt(Point p) {
|
|
return null; // Components don't have children
|
|
}
|
|
|
|
/**
|
|
* Returns whether this object can accept focus or not.
|
|
*
|
|
* @return true if object can accept focus; otherwise false
|
|
*/
|
|
public boolean isFocusTraversable() {
|
|
return Component.this.isFocusTraversable();
|
|
}
|
|
|
|
/**
|
|
* Requests focus for this object.
|
|
*/
|
|
public void requestFocus() {
|
|
Component.this.requestFocus();
|
|
}
|
|
|
|
/**
|
|
* Adds the specified focus listener to receive focus events from this
|
|
* component.
|
|
*
|
|
* @param l the focus listener
|
|
*/
|
|
public void addFocusListener(FocusListener l) {
|
|
Component.this.addFocusListener(l);
|
|
}
|
|
|
|
/**
|
|
* Removes the specified focus listener so it no longer receives focus
|
|
* events from this component.
|
|
*
|
|
* @param l the focus listener
|
|
*/
|
|
public void removeFocusListener(FocusListener l) {
|
|
Component.this.removeFocusListener(l);
|
|
}
|
|
|
|
} // inner class AccessibleAWTComponent
|
|
|
|
|
|
/**
|
|
* Gets the index of this object in its accessible parent.
|
|
* If this object does not have an accessible parent, returns
|
|
* -1.
|
|
*
|
|
* @return the index of this object in its accessible parent
|
|
*/
|
|
int getAccessibleIndexInParent() {
|
|
synchronized (getTreeLock()) {
|
|
int index = -1;
|
|
Container parent = this.getParent();
|
|
if (parent != null && parent instanceof Accessible) {
|
|
Component ca[] = parent.getComponents();
|
|
for (int i = 0; i < ca.length; i++) {
|
|
if (ca[i] instanceof Accessible) {
|
|
index++;
|
|
}
|
|
if (this.equals(ca[i])) {
|
|
return index;
|
|
}
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the current state set of this object.
|
|
*
|
|
* @return an instance of <code>AccessibleStateSet</code>
|
|
* containing the current state set of the object
|
|
* @see AccessibleState
|
|
*/
|
|
AccessibleStateSet getAccessibleStateSet() {
|
|
synchronized (getTreeLock()) {
|
|
AccessibleStateSet states = new AccessibleStateSet();
|
|
if (this.isEnabled()) {
|
|
states.add(AccessibleState.ENABLED);
|
|
}
|
|
if (this.isFocusTraversable()) {
|
|
states.add(AccessibleState.FOCUSABLE);
|
|
}
|
|
if (this.isVisible()) {
|
|
states.add(AccessibleState.VISIBLE);
|
|
}
|
|
if (this.isShowing()) {
|
|
states.add(AccessibleState.SHOWING);
|
|
}
|
|
if (this.isFocusOwner()) {
|
|
states.add(AccessibleState.FOCUSED);
|
|
}
|
|
if (this instanceof Accessible) {
|
|
AccessibleContext ac = ((Accessible) this).getAccessibleContext();
|
|
if (ac != null) {
|
|
Accessible ap = ac.getAccessibleParent();
|
|
if (ap != null) {
|
|
AccessibleContext pac = ap.getAccessibleContext();
|
|
if (pac != null) {
|
|
AccessibleSelection as = pac.getAccessibleSelection();
|
|
if (as != null) {
|
|
states.add(AccessibleState.SELECTABLE);
|
|
int i = ac.getAccessibleIndexInParent();
|
|
if (i >= 0) {
|
|
if (as.isAccessibleChildSelected(i)) {
|
|
states.add(AccessibleState.SELECTED);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (Component.isInstanceOf(this, "javax.swing.JComponent")) {
|
|
if (((javax.swing.JComponent) this).isOpaque()) {
|
|
states.add(AccessibleState.OPAQUE);
|
|
}
|
|
}
|
|
return states;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks that the given object is instance of the given class.
|
|
* @param obj Object to be checked
|
|
* @param className The name of the class. Must be fully-qualified class name.
|
|
* @return true, if this object is instanceof given class,
|
|
* false, otherwise, or if obj or className is null
|
|
*/
|
|
static boolean isInstanceOf(Object obj, String className) {
|
|
if (obj == null) return false;
|
|
if (className == null) return false;
|
|
|
|
Class<?> cls = obj.getClass();
|
|
while (cls != null) {
|
|
if (cls.getName().equals(className)) {
|
|
return true;
|
|
}
|
|
cls = cls.getSuperclass();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
// ************************** MIXING CODE *******************************
|
|
|
|
/**
|
|
* Check whether we can trust the current bounds of the component.
|
|
* The return value of false indicates that the container of the
|
|
* component is invalid, and therefore needs to be layed out, which would
|
|
* probably mean changing the bounds of its children.
|
|
* Null-layout of the container or absence of the container mean
|
|
* the bounds of the component are final and can be trusted.
|
|
*/
|
|
final boolean areBoundsValid() {
|
|
Container cont = getContainer();
|
|
return cont == null || cont.isValid() || cont.getLayout() == null;
|
|
}
|
|
|
|
/**
|
|
* Applies the shape to the component
|
|
* @param shape Shape to be applied to the component
|
|
*/
|
|
void applyCompoundShape(Region shape) {
|
|
checkTreeLock();
|
|
|
|
if (!areBoundsValid()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (!isLightweight()) {
|
|
ComponentPeer peer = getPeer();
|
|
if (peer != null) {
|
|
// The Region class has some optimizations. That's why
|
|
// we should manually check whether it's empty and
|
|
// substitute the object ourselves. Otherwise we end up
|
|
// with some incorrect Region object with loX being
|
|
// greater than the hiX for instance.
|
|
if (shape.isEmpty()) {
|
|
shape = Region.EMPTY_REGION;
|
|
}
|
|
|
|
|
|
// Note: the shape is not really copied/cloned. We create
|
|
// the Region object ourselves, so there's no any possibility
|
|
// to modify the object outside of the mixing code.
|
|
// Nullifying compoundShape means that the component has normal shape
|
|
// (or has no shape at all).
|
|
if (shape.equals(getNormalShape())) {
|
|
if (this.compoundShape == null) {
|
|
return;
|
|
}
|
|
this.compoundShape = null;
|
|
peer.applyShape(null);
|
|
} else {
|
|
if (shape.equals(getAppliedShape())) {
|
|
return;
|
|
}
|
|
this.compoundShape = shape;
|
|
Point compAbsolute = getLocationOnWindow();
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINER)) {
|
|
mixingLog.fine("this = " + this +
|
|
"; compAbsolute=" + compAbsolute + "; shape=" + shape);
|
|
}
|
|
peer.applyShape(shape.getTranslatedRegion(-compAbsolute.x, -compAbsolute.y));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the shape previously set with applyCompoundShape().
|
|
* If the component is LW or no shape was applied yet,
|
|
* the method returns the normal shape.
|
|
*/
|
|
private Region getAppliedShape() {
|
|
checkTreeLock();
|
|
//XXX: if we allow LW components to have a shape, this must be changed
|
|
return (this.compoundShape == null || isLightweight()) ? getNormalShape() : this.compoundShape;
|
|
}
|
|
|
|
Point getLocationOnWindow() {
|
|
checkTreeLock();
|
|
Point curLocation = getLocation();
|
|
|
|
for (Container parent = getContainer();
|
|
parent != null && !(parent instanceof Window);
|
|
parent = parent.getContainer())
|
|
{
|
|
curLocation.x += parent.getX();
|
|
curLocation.y += parent.getY();
|
|
}
|
|
|
|
return curLocation;
|
|
}
|
|
|
|
/**
|
|
* Returns the full shape of the component located in window coordinates
|
|
*/
|
|
final Region getNormalShape() {
|
|
checkTreeLock();
|
|
//XXX: we may take into account a user-specified shape for this component
|
|
Point compAbsolute = getLocationOnWindow();
|
|
return
|
|
Region.getInstanceXYWH(
|
|
compAbsolute.x,
|
|
compAbsolute.y,
|
|
getWidth(),
|
|
getHeight()
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns the "opaque shape" of the component.
|
|
*
|
|
* The opaque shape of a lightweight components is the actual shape that
|
|
* needs to be cut off of the heavyweight components in order to mix this
|
|
* lightweight component correctly with them.
|
|
*
|
|
* The method is overriden in the java.awt.Container to handle non-opaque
|
|
* containers containing opaque children.
|
|
*
|
|
* See 6637655 for details.
|
|
*/
|
|
Region getOpaqueShape() {
|
|
checkTreeLock();
|
|
if (mixingCutoutRegion != null) {
|
|
return mixingCutoutRegion;
|
|
} else {
|
|
return getNormalShape();
|
|
}
|
|
}
|
|
|
|
final int getSiblingIndexAbove() {
|
|
checkTreeLock();
|
|
Container parent = getContainer();
|
|
if (parent == null) {
|
|
return -1;
|
|
}
|
|
|
|
int nextAbove = parent.getComponentZOrder(this) - 1;
|
|
|
|
return nextAbove < 0 ? -1 : nextAbove;
|
|
}
|
|
|
|
final ComponentPeer getHWPeerAboveMe() {
|
|
checkTreeLock();
|
|
|
|
Container cont = getContainer();
|
|
int indexAbove = getSiblingIndexAbove();
|
|
|
|
while (cont != null) {
|
|
for (int i = indexAbove; i > -1; i--) {
|
|
Component comp = cont.getComponent(i);
|
|
if (comp != null && comp.isDisplayable() && !comp.isLightweight()) {
|
|
return comp.getPeer();
|
|
}
|
|
}
|
|
// traversing the hierarchy up to the closest HW container;
|
|
// further traversing may return a component that is not actually
|
|
// a native sibling of this component and this kind of z-order
|
|
// request may not be allowed by the underlying system (6852051).
|
|
if (!cont.isLightweight()) {
|
|
break;
|
|
}
|
|
|
|
indexAbove = cont.getSiblingIndexAbove();
|
|
cont = cont.getContainer();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
final int getSiblingIndexBelow() {
|
|
checkTreeLock();
|
|
Container parent = getContainer();
|
|
if (parent == null) {
|
|
return -1;
|
|
}
|
|
|
|
int nextBelow = parent.getComponentZOrder(this) + 1;
|
|
|
|
return nextBelow >= parent.getComponentCount() ? -1 : nextBelow;
|
|
}
|
|
|
|
final boolean isNonOpaqueForMixing() {
|
|
return mixingCutoutRegion != null &&
|
|
mixingCutoutRegion.isEmpty();
|
|
}
|
|
|
|
private Region calculateCurrentShape() {
|
|
checkTreeLock();
|
|
Region s = getNormalShape();
|
|
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; normalShape=" + s);
|
|
}
|
|
|
|
if (getContainer() != null) {
|
|
Component comp = this;
|
|
Container cont = comp.getContainer();
|
|
|
|
while (cont != null) {
|
|
for (int index = comp.getSiblingIndexAbove(); index != -1; --index) {
|
|
/* It is assumed that:
|
|
*
|
|
* getComponent(getContainer().getComponentZOrder(comp)) == comp
|
|
*
|
|
* The assumption has been made according to the current
|
|
* implementation of the Container class.
|
|
*/
|
|
Component c = cont.getComponent(index);
|
|
if (c.isLightweight() && c.isShowing()) {
|
|
s = s.getDifference(c.getOpaqueShape());
|
|
}
|
|
}
|
|
|
|
if (cont.isLightweight()) {
|
|
s = s.getIntersection(cont.getNormalShape());
|
|
} else {
|
|
break;
|
|
}
|
|
|
|
comp = cont;
|
|
cont = cont.getContainer();
|
|
}
|
|
}
|
|
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("currentShape=" + s);
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
void applyCurrentShape() {
|
|
checkTreeLock();
|
|
if (!areBoundsValid()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
|
|
}
|
|
return; // Because applyCompoundShape() ignores such components anyway
|
|
}
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this);
|
|
}
|
|
applyCompoundShape(calculateCurrentShape());
|
|
}
|
|
|
|
final void subtractAndApplyShape(Region s) {
|
|
checkTreeLock();
|
|
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; s=" + s);
|
|
}
|
|
|
|
applyCompoundShape(getAppliedShape().getDifference(s));
|
|
}
|
|
|
|
private final void applyCurrentShapeBelowMe() {
|
|
checkTreeLock();
|
|
Container parent = getContainer();
|
|
if (parent != null && parent.isShowing()) {
|
|
// First, reapply shapes of my siblings
|
|
parent.recursiveApplyCurrentShape(getSiblingIndexBelow());
|
|
|
|
// Second, if my container is non-opaque, reapply shapes of siblings of my container
|
|
Container parent2 = parent.getContainer();
|
|
while (!parent.isOpaque() && parent2 != null) {
|
|
parent2.recursiveApplyCurrentShape(parent.getSiblingIndexBelow());
|
|
|
|
parent = parent2;
|
|
parent2 = parent.getContainer();
|
|
}
|
|
}
|
|
}
|
|
|
|
final void subtractAndApplyShapeBelowMe() {
|
|
checkTreeLock();
|
|
Container parent = getContainer();
|
|
if (parent != null && isShowing()) {
|
|
Region opaqueShape = getOpaqueShape();
|
|
|
|
// First, cut my siblings
|
|
parent.recursiveSubtractAndApplyShape(opaqueShape, getSiblingIndexBelow());
|
|
|
|
// Second, if my container is non-opaque, cut siblings of my container
|
|
Container parent2 = parent.getContainer();
|
|
while (!parent.isOpaque() && parent2 != null) {
|
|
parent2.recursiveSubtractAndApplyShape(opaqueShape, parent.getSiblingIndexBelow());
|
|
|
|
parent = parent2;
|
|
parent2 = parent.getContainer();
|
|
}
|
|
}
|
|
}
|
|
|
|
void mixOnShowing() {
|
|
synchronized (getTreeLock()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this);
|
|
}
|
|
if (!isMixingNeeded()) {
|
|
return;
|
|
}
|
|
if (isLightweight()) {
|
|
subtractAndApplyShapeBelowMe();
|
|
} else {
|
|
applyCurrentShape();
|
|
}
|
|
}
|
|
}
|
|
|
|
void mixOnHiding(boolean isLightweight) {
|
|
// We cannot be sure that the peer exists at this point, so we need the argument
|
|
// to find out whether the hiding component is (well, actually was) a LW or a HW.
|
|
synchronized (getTreeLock()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; isLightweight = " + isLightweight);
|
|
}
|
|
if (!isMixingNeeded()) {
|
|
return;
|
|
}
|
|
if (isLightweight) {
|
|
applyCurrentShapeBelowMe();
|
|
}
|
|
}
|
|
}
|
|
|
|
void mixOnReshaping() {
|
|
synchronized (getTreeLock()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this);
|
|
}
|
|
if (!isMixingNeeded()) {
|
|
return;
|
|
}
|
|
if (isLightweight()) {
|
|
applyCurrentShapeBelowMe();
|
|
} else {
|
|
applyCurrentShape();
|
|
}
|
|
}
|
|
}
|
|
|
|
void mixOnZOrderChanging(int oldZorder, int newZorder) {
|
|
synchronized (getTreeLock()) {
|
|
boolean becameHigher = newZorder < oldZorder;
|
|
Container parent = getContainer();
|
|
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this +
|
|
"; oldZorder=" + oldZorder + "; newZorder=" + newZorder + "; parent=" + parent);
|
|
}
|
|
if (!isMixingNeeded()) {
|
|
return;
|
|
}
|
|
if (isLightweight()) {
|
|
if (becameHigher) {
|
|
if (parent != null && isShowing()) {
|
|
parent.recursiveSubtractAndApplyShape(getOpaqueShape(), getSiblingIndexBelow(), oldZorder);
|
|
}
|
|
} else {
|
|
if (parent != null) {
|
|
parent.recursiveApplyCurrentShape(oldZorder, newZorder);
|
|
}
|
|
}
|
|
} else {
|
|
if (becameHigher) {
|
|
applyCurrentShape();
|
|
} else {
|
|
if (parent != null) {
|
|
Region shape = getAppliedShape();
|
|
|
|
for (int index = oldZorder; index < newZorder; index++) {
|
|
Component c = parent.getComponent(index);
|
|
if (c.isLightweight() && c.isShowing()) {
|
|
shape = shape.getDifference(c.getOpaqueShape());
|
|
}
|
|
}
|
|
applyCompoundShape(shape);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void mixOnValidating() {
|
|
// This method gets overriden in the Container. Obviously, a plain
|
|
// non-container components don't need to handle validation.
|
|
}
|
|
|
|
final boolean isMixingNeeded() {
|
|
if (SunToolkit.getSunAwtDisableMixing()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINEST)) {
|
|
mixingLog.finest("this = " + this + "; Mixing disabled via sun.awt.disableMixing");
|
|
}
|
|
return false;
|
|
}
|
|
if (!areBoundsValid()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; areBoundsValid = " + areBoundsValid());
|
|
}
|
|
return false;
|
|
}
|
|
Window window = getContainingWindow();
|
|
if (window != null) {
|
|
if (!window.hasHeavyweightDescendants() || !window.hasLightweightDescendants() || window.isDisposing()) {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("containing window = " + window +
|
|
"; has h/w descendants = " + window.hasHeavyweightDescendants() +
|
|
"; has l/w descendants = " + window.hasLightweightDescendants() +
|
|
"; disposing = " + window.isDisposing());
|
|
}
|
|
return false;
|
|
}
|
|
} else {
|
|
if (mixingLog.isLoggable(PlatformLogger.Level.FINE)) {
|
|
mixingLog.fine("this = " + this + "; containing window is null");
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// ****************** END OF MIXING CODE ********************************
|
|
|
|
// Note that the method is overriden in the Window class,
|
|
// a window doesn't need to be updated in the Z-order.
|
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void updateZOrder() {
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peer.setZOrder(getHWPeerAboveMe());
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}
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}
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