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414 lines
14 KiB
414 lines
14 KiB
/*
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* Copyright (c) 1997, 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 javax.swing.plaf.basic;
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import java.awt.*;
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import java.awt.event.*;
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import java.beans.*;
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import java.net.URL;
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import java.net.MalformedURLException;
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import javax.swing.*;
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import javax.swing.text.*;
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import javax.swing.text.html.*;
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import javax.swing.plaf.*;
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import javax.swing.border.*;
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/**
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* Provides the look and feel for a JEditorPane.
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* <p>
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* <strong>Warning:</strong>
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* Serialized objects of this class will not be compatible with
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* future Swing releases. The current serialization support is
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* appropriate for short term storage or RMI between applications running
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* the same version of Swing. As of 1.4, support for long term storage
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* of all JavaBeans™
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* has been added to the <code>java.beans</code> package.
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* Please see {@link java.beans.XMLEncoder}.
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*
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* @author Timothy Prinzing
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*/
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public class BasicEditorPaneUI extends BasicTextUI {
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/**
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* Creates a UI for the JTextPane.
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*
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* @param c the JTextPane component
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* @return the UI
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*/
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public static ComponentUI createUI(JComponent c) {
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return new BasicEditorPaneUI();
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}
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/**
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* Creates a new BasicEditorPaneUI.
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*/
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public BasicEditorPaneUI() {
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super();
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}
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/**
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* Fetches the name used as a key to lookup properties through the
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* UIManager. This is used as a prefix to all the standard
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* text properties.
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*
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* @return the name ("EditorPane")
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*/
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protected String getPropertyPrefix() {
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return "EditorPane";
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}
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/**
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*{@inheritDoc}
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*
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* @since 1.5
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*/
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public void installUI(JComponent c) {
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super.installUI(c);
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updateDisplayProperties(c.getFont(),
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c.getForeground());
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}
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/**
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*{@inheritDoc}
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*
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* @since 1.5
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*/
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public void uninstallUI(JComponent c) {
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cleanDisplayProperties();
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super.uninstallUI(c);
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}
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/**
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* Fetches the EditorKit for the UI. This is whatever is
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* currently set in the associated JEditorPane.
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*
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* @return the editor capabilities
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* @see TextUI#getEditorKit
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*/
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public EditorKit getEditorKit(JTextComponent tc) {
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JEditorPane pane = (JEditorPane) getComponent();
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return pane.getEditorKit();
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}
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/**
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* Fetch an action map to use. The map for a JEditorPane
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* is not shared because it changes with the EditorKit.
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*/
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ActionMap getActionMap() {
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ActionMap am = new ActionMapUIResource();
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am.put("requestFocus", new FocusAction());
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EditorKit editorKit = getEditorKit(getComponent());
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if (editorKit != null) {
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Action[] actions = editorKit.getActions();
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if (actions != null) {
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addActions(am, actions);
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}
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}
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am.put(TransferHandler.getCutAction().getValue(Action.NAME),
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TransferHandler.getCutAction());
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am.put(TransferHandler.getCopyAction().getValue(Action.NAME),
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TransferHandler.getCopyAction());
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am.put(TransferHandler.getPasteAction().getValue(Action.NAME),
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TransferHandler.getPasteAction());
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return am;
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}
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/**
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* This method gets called when a bound property is changed
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* on the associated JTextComponent. This is a hook
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* which UI implementations may change to reflect how the
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* UI displays bound properties of JTextComponent subclasses.
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* This is implemented to rebuild the ActionMap based upon an
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* EditorKit change.
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*
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* @param evt the property change event
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*/
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protected void propertyChange(PropertyChangeEvent evt) {
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super.propertyChange(evt);
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String name = evt.getPropertyName();
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if ("editorKit".equals(name)) {
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ActionMap map = SwingUtilities.getUIActionMap(getComponent());
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if (map != null) {
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Object oldValue = evt.getOldValue();
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if (oldValue instanceof EditorKit) {
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Action[] actions = ((EditorKit)oldValue).getActions();
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if (actions != null) {
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removeActions(map, actions);
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}
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}
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Object newValue = evt.getNewValue();
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if (newValue instanceof EditorKit) {
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Action[] actions = ((EditorKit)newValue).getActions();
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if (actions != null) {
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addActions(map, actions);
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}
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}
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}
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updateFocusTraversalKeys();
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} else if ("editable".equals(name)) {
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updateFocusTraversalKeys();
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} else if ("foreground".equals(name)
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|| "font".equals(name)
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|| "document".equals(name)
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|| JEditorPane.W3C_LENGTH_UNITS.equals(name)
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|| JEditorPane.HONOR_DISPLAY_PROPERTIES.equals(name)
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) {
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JComponent c = getComponent();
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updateDisplayProperties(c.getFont(), c.getForeground());
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if ( JEditorPane.W3C_LENGTH_UNITS.equals(name)
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|| JEditorPane.HONOR_DISPLAY_PROPERTIES.equals(name) ) {
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modelChanged();
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}
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if ("foreground".equals(name)) {
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Object honorDisplayPropertiesObject = c.
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getClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);
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boolean honorDisplayProperties = false;
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if (honorDisplayPropertiesObject instanceof Boolean) {
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honorDisplayProperties =
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((Boolean)honorDisplayPropertiesObject).booleanValue();
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}
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if (honorDisplayProperties) {
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modelChanged();
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}
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}
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}
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}
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void removeActions(ActionMap map, Action[] actions) {
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int n = actions.length;
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for (int i = 0; i < n; i++) {
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Action a = actions[i];
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map.remove(a.getValue(Action.NAME));
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}
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}
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void addActions(ActionMap map, Action[] actions) {
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int n = actions.length;
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for (int i = 0; i < n; i++) {
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Action a = actions[i];
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map.put(a.getValue(Action.NAME), a);
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}
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}
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void updateDisplayProperties(Font font, Color fg) {
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JComponent c = getComponent();
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Object honorDisplayPropertiesObject = c.
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getClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);
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boolean honorDisplayProperties = false;
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Object w3cLengthUnitsObject = c.getClientProperty(JEditorPane.
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W3C_LENGTH_UNITS);
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boolean w3cLengthUnits = false;
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if (honorDisplayPropertiesObject instanceof Boolean) {
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honorDisplayProperties =
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((Boolean)honorDisplayPropertiesObject).booleanValue();
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}
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if (w3cLengthUnitsObject instanceof Boolean) {
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w3cLengthUnits = ((Boolean)w3cLengthUnitsObject).booleanValue();
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}
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if (this instanceof BasicTextPaneUI
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|| honorDisplayProperties) {
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//using equals because can not use UIResource for Boolean
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Document doc = getComponent().getDocument();
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if (doc instanceof StyledDocument) {
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if (doc instanceof HTMLDocument
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&& honorDisplayProperties) {
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updateCSS(font, fg);
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} else {
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updateStyle(font, fg);
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}
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}
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} else {
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cleanDisplayProperties();
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}
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if ( w3cLengthUnits ) {
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Document doc = getComponent().getDocument();
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if (doc instanceof HTMLDocument) {
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StyleSheet documentStyleSheet =
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((HTMLDocument)doc).getStyleSheet();
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documentStyleSheet.addRule("W3C_LENGTH_UNITS_ENABLE");
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}
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} else {
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Document doc = getComponent().getDocument();
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if (doc instanceof HTMLDocument) {
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StyleSheet documentStyleSheet =
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((HTMLDocument)doc).getStyleSheet();
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documentStyleSheet.addRule("W3C_LENGTH_UNITS_DISABLE");
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}
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}
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}
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/**
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* Attribute key to reference the default font.
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* used in javax.swing.text.StyleContext.getFont
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* to resolve the default font.
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*/
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private static final String FONT_ATTRIBUTE_KEY = "FONT_ATTRIBUTE_KEY";
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void cleanDisplayProperties() {
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Document document = getComponent().getDocument();
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if (document instanceof HTMLDocument) {
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StyleSheet documentStyleSheet =
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((HTMLDocument)document).getStyleSheet();
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StyleSheet[] styleSheets = documentStyleSheet.getStyleSheets();
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if (styleSheets != null) {
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for (StyleSheet s : styleSheets) {
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if (s instanceof StyleSheetUIResource) {
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documentStyleSheet.removeStyleSheet(s);
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documentStyleSheet.addRule("BASE_SIZE_DISABLE");
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break;
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}
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}
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}
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Style style = ((StyledDocument) document).getStyle(StyleContext.DEFAULT_STYLE);
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if (style.getAttribute(FONT_ATTRIBUTE_KEY) != null) {
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style.removeAttribute(FONT_ATTRIBUTE_KEY);
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}
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}
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}
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static class StyleSheetUIResource extends StyleSheet implements UIResource {
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}
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private void updateCSS(Font font, Color fg) {
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JTextComponent component = getComponent();
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Document document = component.getDocument();
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if (document instanceof HTMLDocument) {
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StyleSheet styleSheet = new StyleSheetUIResource();
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StyleSheet documentStyleSheet =
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((HTMLDocument)document).getStyleSheet();
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StyleSheet[] styleSheets = documentStyleSheet.getStyleSheets();
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if (styleSheets != null) {
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for (StyleSheet s : styleSheets) {
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if (s instanceof StyleSheetUIResource) {
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documentStyleSheet.removeStyleSheet(s);
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}
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}
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}
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String cssRule = sun.swing.
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SwingUtilities2.displayPropertiesToCSS(font,
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fg);
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styleSheet.addRule(cssRule);
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documentStyleSheet.addStyleSheet(styleSheet);
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documentStyleSheet.addRule("BASE_SIZE " +
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component.getFont().getSize());
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Style style = ((StyledDocument) document).getStyle(StyleContext.DEFAULT_STYLE);
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if (! font.equals(style.getAttribute(FONT_ATTRIBUTE_KEY))) {
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style.addAttribute(FONT_ATTRIBUTE_KEY, font);
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}
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}
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}
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private void updateStyle(Font font, Color fg) {
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updateFont(font);
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updateForeground(fg);
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}
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/**
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* Update the color in the default style of the document.
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*
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* @param color the new color to use or null to remove the color attribute
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* from the document's style
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*/
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private void updateForeground(Color color) {
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StyledDocument doc = (StyledDocument)getComponent().getDocument();
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Style style = doc.getStyle(StyleContext.DEFAULT_STYLE);
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if (style == null) {
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return;
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}
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if (color == null) {
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if (style.getAttribute(StyleConstants.Foreground) != null) {
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style.removeAttribute(StyleConstants.Foreground);
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}
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} else {
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if (! color.equals(StyleConstants.getForeground(style))) {
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StyleConstants.setForeground(style, color);
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}
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}
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}
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/**
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* Update the font in the default style of the document.
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*
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* @param font the new font to use or null to remove the font attribute
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* from the document's style
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*/
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private void updateFont(Font font) {
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StyledDocument doc = (StyledDocument)getComponent().getDocument();
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Style style = doc.getStyle(StyleContext.DEFAULT_STYLE);
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if (style == null) {
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return;
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}
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String fontFamily = (String) style.getAttribute(StyleConstants.FontFamily);
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Integer fontSize = (Integer) style.getAttribute(StyleConstants.FontSize);
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Boolean isBold = (Boolean) style.getAttribute(StyleConstants.Bold);
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Boolean isItalic = (Boolean) style.getAttribute(StyleConstants.Italic);
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Font fontAttribute = (Font) style.getAttribute(FONT_ATTRIBUTE_KEY);
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if (font == null) {
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if (fontFamily != null) {
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style.removeAttribute(StyleConstants.FontFamily);
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}
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if (fontSize != null) {
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style.removeAttribute(StyleConstants.FontSize);
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}
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if (isBold != null) {
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style.removeAttribute(StyleConstants.Bold);
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}
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if (isItalic != null) {
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style.removeAttribute(StyleConstants.Italic);
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}
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if (fontAttribute != null) {
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style.removeAttribute(FONT_ATTRIBUTE_KEY);
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}
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} else {
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if (! font.getName().equals(fontFamily)) {
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StyleConstants.setFontFamily(style, font.getName());
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}
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if (fontSize == null
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|| fontSize.intValue() != font.getSize()) {
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StyleConstants.setFontSize(style, font.getSize());
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}
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if (isBold == null
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|| isBold.booleanValue() != font.isBold()) {
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StyleConstants.setBold(style, font.isBold());
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}
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if (isItalic == null
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|| isItalic.booleanValue() != font.isItalic()) {
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StyleConstants.setItalic(style, font.isItalic());
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}
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if (! font.equals(fontAttribute)) {
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style.addAttribute(FONT_ATTRIBUTE_KEY, font);
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}
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}
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}
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}
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