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1324 lines
44 KiB
1324 lines
44 KiB
/*
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* Copyright (c) 1995, 2013, 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.awt.peer.FramePeer;
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import java.awt.event.*;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Vector;
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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 sun.awt.AppContext;
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import sun.awt.SunToolkit;
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import sun.awt.AWTAccessor;
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import java.lang.ref.WeakReference;
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import javax.accessibility.*;
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/**
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* A <code>Frame</code> is a top-level window with a title and a border.
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* <p>
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* The size of the frame includes any area designated for the
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* border. The dimensions of the border area may be obtained
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* using the <code>getInsets</code> method, however, since
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* these dimensions are platform-dependent, a valid insets
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* value cannot be obtained until the frame is made displayable
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* by either calling <code>pack</code> or <code>show</code>.
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* Since the border area is included in the overall size of the
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* frame, the border effectively obscures a portion of the frame,
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* constraining the area available for rendering and/or displaying
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* subcomponents to the rectangle which has an upper-left corner
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* location of <code>(insets.left, insets.top)</code>, and has a size of
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* <code>width - (insets.left + insets.right)</code> by
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* <code>height - (insets.top + insets.bottom)</code>.
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* <p>
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* The default layout for a frame is <code>BorderLayout</code>.
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* <p>
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* A frame may have its native decorations (i.e. <code>Frame</code>
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* and <code>Titlebar</code>) turned off
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* with <code>setUndecorated</code>. This can only be done while the frame
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* is not {@link Component#isDisplayable() displayable}.
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* <p>
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* In a multi-screen environment, you can create a <code>Frame</code>
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* on a different screen device by constructing the <code>Frame</code>
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* with {@link #Frame(GraphicsConfiguration)} or
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* {@link #Frame(String title, GraphicsConfiguration)}. The
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* <code>GraphicsConfiguration</code> object is one of the
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* <code>GraphicsConfiguration</code> objects of the target screen
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* device.
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* <p>
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* In a virtual device multi-screen environment in which the desktop
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* area could span multiple physical screen devices, the bounds of all
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* configurations are relative to the virtual-coordinate system. The
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* origin of the virtual-coordinate system is at the upper left-hand
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* corner of the primary physical screen. Depending on the location
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* of the primary screen in the virtual device, negative coordinates
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* are possible, as shown in the following figure.
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* <p>
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* <img src="doc-files/MultiScreen.gif"
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* alt="Diagram of virtual device encompassing three physical screens and one primary physical screen. The primary physical screen
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* shows (0,0) coords while a different physical screen shows (-80,-100) coords."
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* style="float:center; margin: 7px 10px;">
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* <p>
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* In such an environment, when calling <code>setLocation</code>,
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* you must pass a virtual coordinate to this method. Similarly,
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* calling <code>getLocationOnScreen</code> on a <code>Frame</code>
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* returns virtual device coordinates. Call the <code>getBounds</code>
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* method of a <code>GraphicsConfiguration</code> to find its origin in
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* the virtual coordinate system.
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* <p>
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* The following code sets the
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* location of the <code>Frame</code> at (10, 10) relative
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* to the origin of the physical screen of the corresponding
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* <code>GraphicsConfiguration</code>. If the bounds of the
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* <code>GraphicsConfiguration</code> is not taken into account, the
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* <code>Frame</code> location would be set at (10, 10) relative to the
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* virtual-coordinate system and would appear on the primary physical
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* screen, which might be different from the physical screen of the
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* specified <code>GraphicsConfiguration</code>.
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*
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* <pre>
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* Frame f = new Frame(GraphicsConfiguration gc);
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* Rectangle bounds = gc.getBounds();
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* f.setLocation(10 + bounds.x, 10 + bounds.y);
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* </pre>
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*
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* <p>
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* Frames are capable of generating the following types of
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* <code>WindowEvent</code>s:
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* <ul>
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* <li><code>WINDOW_OPENED</code>
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* <li><code>WINDOW_CLOSING</code>:
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* <br>If the program doesn't
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* explicitly hide or dispose the window while processing
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* this event, the window close operation is canceled.
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* <li><code>WINDOW_CLOSED</code>
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* <li><code>WINDOW_ICONIFIED</code>
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* <li><code>WINDOW_DEICONIFIED</code>
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* <li><code>WINDOW_ACTIVATED</code>
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* <li><code>WINDOW_DEACTIVATED</code>
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* <li><code>WINDOW_GAINED_FOCUS</code>
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* <li><code>WINDOW_LOST_FOCUS</code>
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* <li><code>WINDOW_STATE_CHANGED</code>
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* </ul>
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*
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* @author Sami Shaio
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* @see WindowEvent
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* @see Window#addWindowListener
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* @since JDK1.0
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*/
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public class Frame extends Window implements MenuContainer {
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/* Note: These are being obsoleted; programs should use the Cursor class
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* variables going forward. See Cursor and Component.setCursor.
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*/
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/**
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* @deprecated replaced by <code>Cursor.DEFAULT_CURSOR</code>.
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*/
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@Deprecated
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public static final int DEFAULT_CURSOR = Cursor.DEFAULT_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.CROSSHAIR_CURSOR</code>.
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*/
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@Deprecated
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public static final int CROSSHAIR_CURSOR = Cursor.CROSSHAIR_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.TEXT_CURSOR</code>.
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*/
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@Deprecated
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public static final int TEXT_CURSOR = Cursor.TEXT_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.WAIT_CURSOR</code>.
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*/
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@Deprecated
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public static final int WAIT_CURSOR = Cursor.WAIT_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.SW_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int SW_RESIZE_CURSOR = Cursor.SW_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.SE_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int SE_RESIZE_CURSOR = Cursor.SE_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.NW_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int NW_RESIZE_CURSOR = Cursor.NW_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.NE_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int NE_RESIZE_CURSOR = Cursor.NE_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.N_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int N_RESIZE_CURSOR = Cursor.N_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.S_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int S_RESIZE_CURSOR = Cursor.S_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.W_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int W_RESIZE_CURSOR = Cursor.W_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.E_RESIZE_CURSOR</code>.
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*/
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@Deprecated
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public static final int E_RESIZE_CURSOR = Cursor.E_RESIZE_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.HAND_CURSOR</code>.
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*/
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@Deprecated
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public static final int HAND_CURSOR = Cursor.HAND_CURSOR;
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/**
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* @deprecated replaced by <code>Cursor.MOVE_CURSOR</code>.
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*/
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@Deprecated
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public static final int MOVE_CURSOR = Cursor.MOVE_CURSOR;
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/**
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* Frame is in the "normal" state. This symbolic constant names a
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* frame state with all state bits cleared.
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* @see #setExtendedState(int)
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* @see #getExtendedState
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*/
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public static final int NORMAL = 0;
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/**
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* This state bit indicates that frame is iconified.
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* @see #setExtendedState(int)
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* @see #getExtendedState
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*/
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public static final int ICONIFIED = 1;
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/**
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* This state bit indicates that frame is maximized in the
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* horizontal direction.
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* @see #setExtendedState(int)
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* @see #getExtendedState
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* @since 1.4
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*/
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public static final int MAXIMIZED_HORIZ = 2;
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/**
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* This state bit indicates that frame is maximized in the
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* vertical direction.
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* @see #setExtendedState(int)
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* @see #getExtendedState
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* @since 1.4
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*/
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public static final int MAXIMIZED_VERT = 4;
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/**
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* This state bit mask indicates that frame is fully maximized
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* (that is both horizontally and vertically). It is just a
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* convenience alias for
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* <code>MAXIMIZED_VERT | MAXIMIZED_HORIZ</code>.
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*
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* <p>Note that the correct test for frame being fully maximized is
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* <pre>
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* (state & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH
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* </pre>
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*
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* <p>To test is frame is maximized in <em>some</em> direction use
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* <pre>
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* (state & Frame.MAXIMIZED_BOTH) != 0
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* </pre>
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*
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* @see #setExtendedState(int)
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* @see #getExtendedState
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* @since 1.4
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*/
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public static final int MAXIMIZED_BOTH = MAXIMIZED_VERT | MAXIMIZED_HORIZ;
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/**
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* Maximized bounds for this frame.
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* @see #setMaximizedBounds(Rectangle)
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* @see #getMaximizedBounds
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* @serial
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* @since 1.4
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*/
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Rectangle maximizedBounds;
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/**
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* This is the title of the frame. It can be changed
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* at any time. <code>title</code> can be null and if
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* this is the case the <code>title</code> = "".
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*
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* @serial
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* @see #getTitle
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* @see #setTitle(String)
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*/
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String title = "Untitled";
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/**
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* The frames menubar. If <code>menuBar</code> = null
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* the frame will not have a menubar.
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*
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* @serial
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* @see #getMenuBar
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* @see #setMenuBar(MenuBar)
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*/
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MenuBar menuBar;
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/**
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* This field indicates whether the frame is resizable.
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* This property can be changed at any time.
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* <code>resizable</code> will be true if the frame is
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* resizable, otherwise it will be false.
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*
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* @serial
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* @see #isResizable()
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*/
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boolean resizable = true;
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/**
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* This field indicates whether the frame is undecorated.
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* This property can only be changed while the frame is not displayable.
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* <code>undecorated</code> will be true if the frame is
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* undecorated, otherwise it will be false.
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*
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* @serial
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* @see #setUndecorated(boolean)
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* @see #isUndecorated()
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* @see Component#isDisplayable()
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* @since 1.4
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*/
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boolean undecorated = false;
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/**
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* <code>mbManagement</code> is only used by the Motif implementation.
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*
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* @serial
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*/
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boolean mbManagement = false; /* used only by the Motif impl. */
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// XXX: uwe: abuse old field for now
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// will need to take care of serialization
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private int state = NORMAL;
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/*
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* The Windows owned by the Frame.
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* Note: in 1.2 this has been superceded by Window.ownedWindowList
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*
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* @serial
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* @see java.awt.Window#ownedWindowList
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*/
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Vector<Window> ownedWindows;
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private static final String base = "frame";
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private static int nameCounter = 0;
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/*
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* JDK 1.1 serialVersionUID
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*/
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private static final long serialVersionUID = 2673458971256075116L;
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static {
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/* ensure that the necessary native libraries are loaded */
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Toolkit.loadLibraries();
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if (!GraphicsEnvironment.isHeadless()) {
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initIDs();
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}
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}
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/**
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* Constructs a new instance of <code>Frame</code> that is
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* initially invisible. The title of the <code>Frame</code>
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* is empty.
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* @exception HeadlessException when
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* <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
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* @see java.awt.GraphicsEnvironment#isHeadless()
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* @see Component#setSize
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* @see Component#setVisible(boolean)
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*/
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public Frame() throws HeadlessException {
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this("");
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}
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/**
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* Constructs a new, initially invisible {@code Frame} with the
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* specified {@code GraphicsConfiguration}.
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*
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* @param gc the <code>GraphicsConfiguration</code>
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* of the target screen device. If <code>gc</code>
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* is <code>null</code>, the system default
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* <code>GraphicsConfiguration</code> is assumed.
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* @exception IllegalArgumentException if
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* <code>gc</code> is not from a screen device.
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* @exception HeadlessException when
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* <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
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* @see java.awt.GraphicsEnvironment#isHeadless()
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* @since 1.3
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*/
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public Frame(GraphicsConfiguration gc) {
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this("", gc);
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}
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/**
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* Constructs a new, initially invisible <code>Frame</code> object
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* with the specified title.
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* @param title the title to be displayed in the frame's border.
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* A <code>null</code> value
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* is treated as an empty string, "".
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* @exception HeadlessException when
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* <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
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* @see java.awt.GraphicsEnvironment#isHeadless()
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* @see java.awt.Component#setSize
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* @see java.awt.Component#setVisible(boolean)
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* @see java.awt.GraphicsConfiguration#getBounds
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*/
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public Frame(String title) throws HeadlessException {
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init(title, null);
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}
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/**
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* Constructs a new, initially invisible <code>Frame</code> object
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* with the specified title and a
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* <code>GraphicsConfiguration</code>.
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* @param title the title to be displayed in the frame's border.
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* A <code>null</code> value
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* is treated as an empty string, "".
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* @param gc the <code>GraphicsConfiguration</code>
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* of the target screen device. If <code>gc</code> is
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* <code>null</code>, the system default
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* <code>GraphicsConfiguration</code> is assumed.
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* @exception IllegalArgumentException if <code>gc</code>
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* is not from a screen device.
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* @exception HeadlessException when
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* <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
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* @see java.awt.GraphicsEnvironment#isHeadless()
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* @see java.awt.Component#setSize
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* @see java.awt.Component#setVisible(boolean)
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* @see java.awt.GraphicsConfiguration#getBounds
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* @since 1.3
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*/
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public Frame(String title, GraphicsConfiguration gc) {
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super(gc);
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init(title, gc);
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}
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private void init(String title, GraphicsConfiguration gc) {
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this.title = title;
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SunToolkit.checkAndSetPolicy(this);
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}
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/**
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* Construct a name for this component. Called by getName() when the
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* name is null.
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*/
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String constructComponentName() {
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synchronized (Frame.class) {
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return base + nameCounter++;
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}
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}
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/**
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* Makes this Frame displayable by connecting it to
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* a native screen resource. Making a frame displayable will
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* cause any of its children to be made displayable.
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* This method is called internally by the toolkit and should
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* not be called directly by programs.
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* @see Component#isDisplayable
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* @see #removeNotify
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*/
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public void addNotify() {
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synchronized (getTreeLock()) {
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if (peer == null) {
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peer = getToolkit().createFrame(this);
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}
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FramePeer p = (FramePeer)peer;
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MenuBar menuBar = this.menuBar;
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if (menuBar != null) {
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mbManagement = true;
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menuBar.addNotify();
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p.setMenuBar(menuBar);
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}
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p.setMaximizedBounds(maximizedBounds);
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super.addNotify();
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}
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}
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/**
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* Gets the title of the frame. The title is displayed in the
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* frame's border.
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* @return the title of this frame, or an empty string ("")
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* if this frame doesn't have a title.
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* @see #setTitle(String)
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*/
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public String getTitle() {
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return title;
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}
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|
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/**
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* Sets the title for this frame to the specified string.
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* @param title the title to be displayed in the frame's border.
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* A <code>null</code> value
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* is treated as an empty string, "".
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* @see #getTitle
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*/
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public void setTitle(String title) {
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String oldTitle = this.title;
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if (title == null) {
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title = "";
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}
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synchronized(this) {
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this.title = title;
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FramePeer peer = (FramePeer)this.peer;
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if (peer != null) {
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|
peer.setTitle(title);
|
|
}
|
|
}
|
|
firePropertyChange("title", oldTitle, title);
|
|
}
|
|
|
|
/**
|
|
* Returns the image to be displayed as the icon for this frame.
|
|
* <p>
|
|
* This method is obsolete and kept for backward compatibility
|
|
* only. Use {@link Window#getIconImages Window.getIconImages()} instead.
|
|
* <p>
|
|
* If a list of several images was specified as a Window's icon,
|
|
* this method will return the first item of the list.
|
|
*
|
|
* @return the icon image for this frame, or <code>null</code>
|
|
* if this frame doesn't have an icon image.
|
|
* @see #setIconImage(Image)
|
|
* @see Window#getIconImages()
|
|
* @see Window#setIconImages
|
|
*/
|
|
public Image getIconImage() {
|
|
java.util.List<Image> icons = this.icons;
|
|
if (icons != null) {
|
|
if (icons.size() > 0) {
|
|
return icons.get(0);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public void setIconImage(Image image) {
|
|
super.setIconImage(image);
|
|
}
|
|
|
|
/**
|
|
* Gets the menu bar for this frame.
|
|
* @return the menu bar for this frame, or <code>null</code>
|
|
* if this frame doesn't have a menu bar.
|
|
* @see #setMenuBar(MenuBar)
|
|
*/
|
|
public MenuBar getMenuBar() {
|
|
return menuBar;
|
|
}
|
|
|
|
/**
|
|
* Sets the menu bar for this frame to the specified menu bar.
|
|
* @param mb the menu bar being set.
|
|
* If this parameter is <code>null</code> then any
|
|
* existing menu bar on this frame is removed.
|
|
* @see #getMenuBar
|
|
*/
|
|
public void setMenuBar(MenuBar mb) {
|
|
synchronized (getTreeLock()) {
|
|
if (menuBar == mb) {
|
|
return;
|
|
}
|
|
if ((mb != null) && (mb.parent != null)) {
|
|
mb.parent.remove(mb);
|
|
}
|
|
if (menuBar != null) {
|
|
remove(menuBar);
|
|
}
|
|
menuBar = mb;
|
|
if (menuBar != null) {
|
|
menuBar.parent = this;
|
|
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
mbManagement = true;
|
|
menuBar.addNotify();
|
|
invalidateIfValid();
|
|
peer.setMenuBar(menuBar);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Indicates whether this frame is resizable by the user.
|
|
* By default, all frames are initially resizable.
|
|
* @return <code>true</code> if the user can resize this frame;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Frame#setResizable(boolean)
|
|
*/
|
|
public boolean isResizable() {
|
|
return resizable;
|
|
}
|
|
|
|
/**
|
|
* Sets whether this frame is resizable by the user.
|
|
* @param resizable <code>true</code> if this frame is resizable;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Frame#isResizable
|
|
*/
|
|
public void setResizable(boolean resizable) {
|
|
boolean oldResizable = this.resizable;
|
|
boolean testvalid = false;
|
|
|
|
synchronized (this) {
|
|
this.resizable = resizable;
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
peer.setResizable(resizable);
|
|
testvalid = true;
|
|
}
|
|
}
|
|
|
|
// On some platforms, changing the resizable state affects
|
|
// the insets of the Frame. If we could, we'd call invalidate()
|
|
// from the peer, but we need to guarantee that we're not holding
|
|
// the Frame lock when we call invalidate().
|
|
if (testvalid) {
|
|
invalidateIfValid();
|
|
}
|
|
firePropertyChange("resizable", oldResizable, resizable);
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the state of this frame (obsolete).
|
|
* <p>
|
|
* In older versions of JDK a frame state could only be NORMAL or
|
|
* ICONIFIED. Since JDK 1.4 set of supported frame states is
|
|
* expanded and frame state is represented as a bitwise mask.
|
|
* <p>
|
|
* For compatibility with applications developed
|
|
* earlier this method still accepts
|
|
* {@code Frame.NORMAL} and
|
|
* {@code Frame.ICONIFIED} only. The iconic
|
|
* state of the frame is only changed, other aspects
|
|
* of frame state are not affected by this method. If
|
|
* the state passed to this method is neither {@code
|
|
* Frame.NORMAL} nor {@code Frame.ICONIFIED} the
|
|
* method performs no actions at all.
|
|
* <p>Note that if the state is not supported on a
|
|
* given platform, neither the state nor the return
|
|
* value of the {@link #getState} method will be
|
|
* changed. The application may determine whether a
|
|
* specific state is supported via the {@link
|
|
* java.awt.Toolkit#isFrameStateSupported} method.
|
|
* <p><b>If the frame is currently visible on the
|
|
* screen</b> (the {@link #isShowing} method returns
|
|
* {@code true}), the developer should examine the
|
|
* return value of the {@link
|
|
* java.awt.event.WindowEvent#getNewState} method of
|
|
* the {@code WindowEvent} received through the
|
|
* {@link java.awt.event.WindowStateListener} to
|
|
* determine that the state has actually been
|
|
* changed.
|
|
* <p><b>If the frame is not visible on the
|
|
* screen</b>, the events may or may not be
|
|
* generated. In this case the developer may assume
|
|
* that the state changes immediately after this
|
|
* method returns. Later, when the {@code
|
|
* setVisible(true)} method is invoked, the frame
|
|
* will attempt to apply this state. Receiving any
|
|
* {@link
|
|
* java.awt.event.WindowEvent#WINDOW_STATE_CHANGED}
|
|
* events is not guaranteed in this case also.
|
|
*
|
|
* @param state either <code>Frame.NORMAL</code> or
|
|
* <code>Frame.ICONIFIED</code>.
|
|
* @see #setExtendedState(int)
|
|
* @see java.awt.Window#addWindowStateListener
|
|
*/
|
|
public synchronized void setState(int state) {
|
|
int current = getExtendedState();
|
|
if (state == ICONIFIED && (current & ICONIFIED) == 0) {
|
|
setExtendedState(current | ICONIFIED);
|
|
}
|
|
else if (state == NORMAL && (current & ICONIFIED) != 0) {
|
|
setExtendedState(current & ~ICONIFIED);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the state of this frame. The state is
|
|
* represented as a bitwise mask.
|
|
* <ul>
|
|
* <li><code>NORMAL</code>
|
|
* <br>Indicates that no state bits are set.
|
|
* <li><code>ICONIFIED</code>
|
|
* <li><code>MAXIMIZED_HORIZ</code>
|
|
* <li><code>MAXIMIZED_VERT</code>
|
|
* <li><code>MAXIMIZED_BOTH</code>
|
|
* <br>Concatenates <code>MAXIMIZED_HORIZ</code>
|
|
* and <code>MAXIMIZED_VERT</code>.
|
|
* </ul>
|
|
* <p>Note that if the state is not supported on a
|
|
* given platform, neither the state nor the return
|
|
* value of the {@link #getExtendedState} method will
|
|
* be changed. The application may determine whether
|
|
* a specific state is supported via the {@link
|
|
* java.awt.Toolkit#isFrameStateSupported} method.
|
|
* <p><b>If the frame is currently visible on the
|
|
* screen</b> (the {@link #isShowing} method returns
|
|
* {@code true}), the developer should examine the
|
|
* return value of the {@link
|
|
* java.awt.event.WindowEvent#getNewState} method of
|
|
* the {@code WindowEvent} received through the
|
|
* {@link java.awt.event.WindowStateListener} to
|
|
* determine that the state has actually been
|
|
* changed.
|
|
* <p><b>If the frame is not visible on the
|
|
* screen</b>, the events may or may not be
|
|
* generated. In this case the developer may assume
|
|
* that the state changes immediately after this
|
|
* method returns. Later, when the {@code
|
|
* setVisible(true)} method is invoked, the frame
|
|
* will attempt to apply this state. Receiving any
|
|
* {@link
|
|
* java.awt.event.WindowEvent#WINDOW_STATE_CHANGED}
|
|
* events is not guaranteed in this case also.
|
|
*
|
|
* @param state a bitwise mask of frame state constants
|
|
* @since 1.4
|
|
* @see java.awt.Window#addWindowStateListener
|
|
*/
|
|
public void setExtendedState(int state) {
|
|
if ( !isFrameStateSupported( state ) ) {
|
|
return;
|
|
}
|
|
synchronized (getObjectLock()) {
|
|
this.state = state;
|
|
}
|
|
// peer.setState must be called outside of object lock
|
|
// synchronization block to avoid possible deadlock
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
peer.setState(state);
|
|
}
|
|
}
|
|
private boolean isFrameStateSupported(int state) {
|
|
if( !getToolkit().isFrameStateSupported( state ) ) {
|
|
// * Toolkit.isFrameStateSupported returns always false
|
|
// on compound state even if all parts are supported;
|
|
// * if part of state is not supported, state is not supported;
|
|
// * MAXIMIZED_BOTH is not a compound state.
|
|
if( ((state & ICONIFIED) != 0) &&
|
|
!getToolkit().isFrameStateSupported( ICONIFIED )) {
|
|
return false;
|
|
}else {
|
|
state &= ~ICONIFIED;
|
|
}
|
|
return getToolkit().isFrameStateSupported( state );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Gets the state of this frame (obsolete).
|
|
* <p>
|
|
* In older versions of JDK a frame state could only be NORMAL or
|
|
* ICONIFIED. Since JDK 1.4 set of supported frame states is
|
|
* expanded and frame state is represented as a bitwise mask.
|
|
* <p>
|
|
* For compatibility with old programs this method still returns
|
|
* <code>Frame.NORMAL</code> and <code>Frame.ICONIFIED</code> but
|
|
* it only reports the iconic state of the frame, other aspects of
|
|
* frame state are not reported by this method.
|
|
*
|
|
* @return <code>Frame.NORMAL</code> or <code>Frame.ICONIFIED</code>.
|
|
* @see #setState(int)
|
|
* @see #getExtendedState
|
|
*/
|
|
public synchronized int getState() {
|
|
return (getExtendedState() & ICONIFIED) != 0 ? ICONIFIED : NORMAL;
|
|
}
|
|
|
|
|
|
/**
|
|
* Gets the state of this frame. The state is
|
|
* represented as a bitwise mask.
|
|
* <ul>
|
|
* <li><code>NORMAL</code>
|
|
* <br>Indicates that no state bits are set.
|
|
* <li><code>ICONIFIED</code>
|
|
* <li><code>MAXIMIZED_HORIZ</code>
|
|
* <li><code>MAXIMIZED_VERT</code>
|
|
* <li><code>MAXIMIZED_BOTH</code>
|
|
* <br>Concatenates <code>MAXIMIZED_HORIZ</code>
|
|
* and <code>MAXIMIZED_VERT</code>.
|
|
* </ul>
|
|
*
|
|
* @return a bitwise mask of frame state constants
|
|
* @see #setExtendedState(int)
|
|
* @since 1.4
|
|
*/
|
|
public int getExtendedState() {
|
|
synchronized (getObjectLock()) {
|
|
return state;
|
|
}
|
|
}
|
|
|
|
static {
|
|
AWTAccessor.setFrameAccessor(
|
|
new AWTAccessor.FrameAccessor() {
|
|
public void setExtendedState(Frame frame, int state) {
|
|
synchronized(frame.getObjectLock()) {
|
|
frame.state = state;
|
|
}
|
|
}
|
|
public int getExtendedState(Frame frame) {
|
|
synchronized(frame.getObjectLock()) {
|
|
return frame.state;
|
|
}
|
|
}
|
|
public Rectangle getMaximizedBounds(Frame frame) {
|
|
synchronized(frame.getObjectLock()) {
|
|
return frame.maximizedBounds;
|
|
}
|
|
}
|
|
}
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Sets the maximized bounds for this frame.
|
|
* <p>
|
|
* When a frame is in maximized state the system supplies some
|
|
* defaults bounds. This method allows some or all of those
|
|
* system supplied values to be overridden.
|
|
* <p>
|
|
* If <code>bounds</code> is <code>null</code>, accept bounds
|
|
* supplied by the system. If non-<code>null</code> you can
|
|
* override some of the system supplied values while accepting
|
|
* others by setting those fields you want to accept from system
|
|
* to <code>Integer.MAX_VALUE</code>.
|
|
* <p>
|
|
* Note, the given maximized bounds are used as a hint for the native
|
|
* system, because the underlying platform may not support setting the
|
|
* location and/or size of the maximized windows. If that is the case, the
|
|
* provided values do not affect the appearance of the frame in the
|
|
* maximized state.
|
|
*
|
|
* @param bounds bounds for the maximized state
|
|
* @see #getMaximizedBounds()
|
|
* @since 1.4
|
|
*/
|
|
public void setMaximizedBounds(Rectangle bounds) {
|
|
synchronized(getObjectLock()) {
|
|
this.maximizedBounds = bounds;
|
|
}
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
peer.setMaximizedBounds(bounds);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets maximized bounds for this frame.
|
|
* Some fields may contain <code>Integer.MAX_VALUE</code> to indicate
|
|
* that system supplied values for this field must be used.
|
|
*
|
|
* @return maximized bounds for this frame; may be <code>null</code>
|
|
* @see #setMaximizedBounds(Rectangle)
|
|
* @since 1.4
|
|
*/
|
|
public Rectangle getMaximizedBounds() {
|
|
synchronized(getObjectLock()) {
|
|
return maximizedBounds;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Disables or enables decorations for this frame.
|
|
* <p>
|
|
* This method can only be called while the frame is not displayable. To
|
|
* make this frame decorated, it must be opaque and have the default shape,
|
|
* otherwise the {@code IllegalComponentStateException} will be thrown.
|
|
* Refer to {@link Window#setShape}, {@link Window#setOpacity} and {@link
|
|
* Window#setBackground} for details
|
|
*
|
|
* @param undecorated {@code true} if no frame decorations are to be
|
|
* enabled; {@code false} if frame decorations are to be enabled
|
|
*
|
|
* @throws IllegalComponentStateException if the frame is displayable
|
|
* @throws IllegalComponentStateException if {@code undecorated} is
|
|
* {@code false}, and this frame does not have the default shape
|
|
* @throws IllegalComponentStateException if {@code undecorated} is
|
|
* {@code false}, and this frame opacity is less than {@code 1.0f}
|
|
* @throws IllegalComponentStateException if {@code undecorated} is
|
|
* {@code false}, and the alpha value of this frame background
|
|
* color is less than {@code 1.0f}
|
|
*
|
|
* @see #isUndecorated
|
|
* @see Component#isDisplayable
|
|
* @see Window#getShape
|
|
* @see Window#getOpacity
|
|
* @see Window#getBackground
|
|
* @see javax.swing.JFrame#setDefaultLookAndFeelDecorated(boolean)
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
public void setUndecorated(boolean undecorated) {
|
|
/* Make sure we don't run in the middle of peer creation.*/
|
|
synchronized (getTreeLock()) {
|
|
if (isDisplayable()) {
|
|
throw new IllegalComponentStateException("The frame is displayable.");
|
|
}
|
|
if (!undecorated) {
|
|
if (getOpacity() < 1.0f) {
|
|
throw new IllegalComponentStateException("The frame is not opaque");
|
|
}
|
|
if (getShape() != null) {
|
|
throw new IllegalComponentStateException("The frame does not have a default shape");
|
|
}
|
|
Color bg = getBackground();
|
|
if ((bg != null) && (bg.getAlpha() < 255)) {
|
|
throw new IllegalComponentStateException("The frame background color is not opaque");
|
|
}
|
|
}
|
|
this.undecorated = undecorated;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Indicates whether this frame is undecorated.
|
|
* By default, all frames are initially decorated.
|
|
* @return <code>true</code> if frame is undecorated;
|
|
* <code>false</code> otherwise.
|
|
* @see java.awt.Frame#setUndecorated(boolean)
|
|
* @since 1.4
|
|
*/
|
|
public boolean isUndecorated() {
|
|
return undecorated;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
@Override
|
|
public void setOpacity(float opacity) {
|
|
synchronized (getTreeLock()) {
|
|
if ((opacity < 1.0f) && !isUndecorated()) {
|
|
throw new IllegalComponentStateException("The frame is decorated");
|
|
}
|
|
super.setOpacity(opacity);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
@Override
|
|
public void setShape(Shape shape) {
|
|
synchronized (getTreeLock()) {
|
|
if ((shape != null) && !isUndecorated()) {
|
|
throw new IllegalComponentStateException("The frame is decorated");
|
|
}
|
|
super.setShape(shape);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
@Override
|
|
public void setBackground(Color bgColor) {
|
|
synchronized (getTreeLock()) {
|
|
if ((bgColor != null) && (bgColor.getAlpha() < 255) && !isUndecorated()) {
|
|
throw new IllegalComponentStateException("The frame is decorated");
|
|
}
|
|
super.setBackground(bgColor);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes the specified menu bar from this frame.
|
|
* @param m the menu component to remove.
|
|
* If <code>m</code> is <code>null</code>, then
|
|
* no action is taken
|
|
*/
|
|
public void remove(MenuComponent m) {
|
|
if (m == null) {
|
|
return;
|
|
}
|
|
synchronized (getTreeLock()) {
|
|
if (m == menuBar) {
|
|
menuBar = null;
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
mbManagement = true;
|
|
invalidateIfValid();
|
|
peer.setMenuBar(null);
|
|
m.removeNotify();
|
|
}
|
|
m.parent = null;
|
|
} else {
|
|
super.remove(m);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Makes this Frame undisplayable by removing its connection
|
|
* to its native screen resource. Making a Frame undisplayable
|
|
* will cause any of its children to be made undisplayable.
|
|
* This method is called by the toolkit internally and should
|
|
* not be called directly by programs.
|
|
* @see Component#isDisplayable
|
|
* @see #addNotify
|
|
*/
|
|
public void removeNotify() {
|
|
synchronized (getTreeLock()) {
|
|
FramePeer peer = (FramePeer)this.peer;
|
|
if (peer != null) {
|
|
// get the latest Frame state before disposing
|
|
getState();
|
|
|
|
if (menuBar != null) {
|
|
mbManagement = true;
|
|
peer.setMenuBar(null);
|
|
menuBar.removeNotify();
|
|
}
|
|
}
|
|
super.removeNotify();
|
|
}
|
|
}
|
|
|
|
void postProcessKeyEvent(KeyEvent e) {
|
|
if (menuBar != null && menuBar.handleShortcut(e)) {
|
|
e.consume();
|
|
return;
|
|
}
|
|
super.postProcessKeyEvent(e);
|
|
}
|
|
|
|
/**
|
|
* Returns a string representing the state of this <code>Frame</code>.
|
|
* 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 the parameter string of this frame
|
|
*/
|
|
protected String paramString() {
|
|
String str = super.paramString();
|
|
if (title != null) {
|
|
str += ",title=" + title;
|
|
}
|
|
if (resizable) {
|
|
str += ",resizable";
|
|
}
|
|
int state = getExtendedState();
|
|
if (state == NORMAL) {
|
|
str += ",normal";
|
|
}
|
|
else {
|
|
if ((state & ICONIFIED) != 0) {
|
|
str += ",iconified";
|
|
}
|
|
if ((state & MAXIMIZED_BOTH) == MAXIMIZED_BOTH) {
|
|
str += ",maximized";
|
|
}
|
|
else if ((state & MAXIMIZED_HORIZ) != 0) {
|
|
str += ",maximized_horiz";
|
|
}
|
|
else if ((state & MAXIMIZED_VERT) != 0) {
|
|
str += ",maximized_vert";
|
|
}
|
|
}
|
|
return str;
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>Component.setCursor(Cursor)</code>.
|
|
*/
|
|
@Deprecated
|
|
public void setCursor(int cursorType) {
|
|
if (cursorType < DEFAULT_CURSOR || cursorType > MOVE_CURSOR) {
|
|
throw new IllegalArgumentException("illegal cursor type");
|
|
}
|
|
setCursor(Cursor.getPredefinedCursor(cursorType));
|
|
}
|
|
|
|
/**
|
|
* @deprecated As of JDK version 1.1,
|
|
* replaced by <code>Component.getCursor()</code>.
|
|
*/
|
|
@Deprecated
|
|
public int getCursorType() {
|
|
return (getCursor().getType());
|
|
}
|
|
|
|
/**
|
|
* Returns an array of all {@code Frame}s created by this application.
|
|
* If called from an applet, the array includes only the {@code Frame}s
|
|
* accessible by that applet.
|
|
* <p>
|
|
* <b>Warning:</b> this method may return system created frames, such
|
|
* as a shared, hidden frame which is used by Swing. Applications
|
|
* should not assume the existence of these frames, nor should an
|
|
* application assume anything about these frames such as component
|
|
* positions, <code>LayoutManager</code>s or serialization.
|
|
* <p>
|
|
* <b>Note</b>: To obtain a list of all ownerless windows, including
|
|
* ownerless {@code Dialog}s (introduced in release 1.6), use {@link
|
|
* Window#getOwnerlessWindows Window.getOwnerlessWindows}.
|
|
*
|
|
* @see Window#getWindows()
|
|
* @see Window#getOwnerlessWindows
|
|
*
|
|
* @since 1.2
|
|
*/
|
|
public static Frame[] getFrames() {
|
|
Window[] allWindows = Window.getWindows();
|
|
|
|
int frameCount = 0;
|
|
for (Window w : allWindows) {
|
|
if (w instanceof Frame) {
|
|
frameCount++;
|
|
}
|
|
}
|
|
|
|
Frame[] frames = new Frame[frameCount];
|
|
int c = 0;
|
|
for (Window w : allWindows) {
|
|
if (w instanceof Frame) {
|
|
frames[c++] = (Frame)w;
|
|
}
|
|
}
|
|
|
|
return frames;
|
|
}
|
|
|
|
/* Serialization support. If there's a MenuBar we restore
|
|
* its (transient) parent field here. Likewise for top level
|
|
* windows that are "owned" by this frame.
|
|
*/
|
|
|
|
/**
|
|
* <code>Frame</code>'s Serialized Data Version.
|
|
*
|
|
* @serial
|
|
*/
|
|
private int frameSerializedDataVersion = 1;
|
|
|
|
/**
|
|
* Writes default serializable fields to stream. Writes
|
|
* an optional serializable icon <code>Image</code>, which is
|
|
* available as of 1.4.
|
|
*
|
|
* @param s the <code>ObjectOutputStream</code> to write
|
|
* @serialData an optional icon <code>Image</code>
|
|
* @see java.awt.Image
|
|
* @see #getIconImage
|
|
* @see #setIconImage(Image)
|
|
* @see #readObject(ObjectInputStream)
|
|
*/
|
|
private void writeObject(ObjectOutputStream s)
|
|
throws IOException
|
|
{
|
|
s.defaultWriteObject();
|
|
if (icons != null && icons.size() > 0) {
|
|
Image icon1 = icons.get(0);
|
|
if (icon1 instanceof Serializable) {
|
|
s.writeObject(icon1);
|
|
return;
|
|
}
|
|
}
|
|
s.writeObject(null);
|
|
}
|
|
|
|
/**
|
|
* Reads the <code>ObjectInputStream</code>. Tries
|
|
* to read an icon <code>Image</code>, which is optional
|
|
* data available as of 1.4. If an icon <code>Image</code>
|
|
* is not available, but anything other than an EOF
|
|
* is detected, an <code>OptionalDataException</code>
|
|
* will be thrown.
|
|
* Unrecognized keys or values will be ignored.
|
|
*
|
|
* @param s the <code>ObjectInputStream</code> to read
|
|
* @exception java.io.OptionalDataException if an icon <code>Image</code>
|
|
* is not available, but anything other than an EOF
|
|
* is detected
|
|
* @exception HeadlessException if
|
|
* <code>GraphicsEnvironment.isHeadless</code> returns
|
|
* <code>true</code>
|
|
* @see java.awt.GraphicsEnvironment#isHeadless()
|
|
* @see java.awt.Image
|
|
* @see #getIconImage
|
|
* @see #setIconImage(Image)
|
|
* @see #writeObject(ObjectOutputStream)
|
|
*/
|
|
private void readObject(ObjectInputStream s)
|
|
throws ClassNotFoundException, IOException, HeadlessException
|
|
{
|
|
// HeadlessException is thrown by Window's readObject
|
|
s.defaultReadObject();
|
|
try {
|
|
Image icon = (Image) s.readObject();
|
|
if (icons == null) {
|
|
icons = new ArrayList<Image>();
|
|
icons.add(icon);
|
|
}
|
|
} catch (java.io.OptionalDataException e) {
|
|
// pre-1.4 instances will not have this optional data.
|
|
// 1.6 and later instances serialize icons in the Window class
|
|
// 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 unrelated reasons.
|
|
if (!e.eof) {
|
|
throw (e);
|
|
}
|
|
}
|
|
|
|
if (menuBar != null)
|
|
menuBar.parent = this;
|
|
|
|
// Ensure 1.1 serialized Frames can read & hook-up
|
|
// owned windows properly
|
|
//
|
|
if (ownedWindows != null) {
|
|
for (int i = 0; i < ownedWindows.size(); i++) {
|
|
connectOwnedWindow(ownedWindows.elementAt(i));
|
|
}
|
|
ownedWindows = null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Initialize JNI field and method IDs
|
|
*/
|
|
private static native void initIDs();
|
|
|
|
/*
|
|
* --- Accessibility Support ---
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Gets the AccessibleContext associated with this Frame.
|
|
* For frames, the AccessibleContext takes the form of an
|
|
* AccessibleAWTFrame.
|
|
* A new AccessibleAWTFrame instance is created if necessary.
|
|
*
|
|
* @return an AccessibleAWTFrame that serves as the
|
|
* AccessibleContext of this Frame
|
|
* @since 1.3
|
|
*/
|
|
public AccessibleContext getAccessibleContext() {
|
|
if (accessibleContext == null) {
|
|
accessibleContext = new AccessibleAWTFrame();
|
|
}
|
|
return accessibleContext;
|
|
}
|
|
|
|
/**
|
|
* This class implements accessibility support for the
|
|
* <code>Frame</code> class. It provides an implementation of the
|
|
* Java Accessibility API appropriate to frame user-interface elements.
|
|
* @since 1.3
|
|
*/
|
|
protected class AccessibleAWTFrame extends AccessibleAWTWindow
|
|
{
|
|
/*
|
|
* JDK 1.3 serialVersionUID
|
|
*/
|
|
private static final long serialVersionUID = -6172960752956030250L;
|
|
|
|
/**
|
|
* Get the role of this object.
|
|
*
|
|
* @return an instance of AccessibleRole describing the role of the
|
|
* object
|
|
* @see AccessibleRole
|
|
*/
|
|
public AccessibleRole getAccessibleRole() {
|
|
return AccessibleRole.FRAME;
|
|
}
|
|
|
|
/**
|
|
* Get the state of this object.
|
|
*
|
|
* @return an instance of AccessibleStateSet containing the current
|
|
* state set of the object
|
|
* @see AccessibleState
|
|
*/
|
|
public AccessibleStateSet getAccessibleStateSet() {
|
|
AccessibleStateSet states = super.getAccessibleStateSet();
|
|
if (getFocusOwner() != null) {
|
|
states.add(AccessibleState.ACTIVE);
|
|
}
|
|
if (isResizable()) {
|
|
states.add(AccessibleState.RESIZABLE);
|
|
}
|
|
return states;
|
|
}
|
|
|
|
|
|
} // inner class AccessibleAWTFrame
|
|
|
|
}
|