/* * @(#)BasicEditorPaneUI.java	1.33 05/11/10 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package javax.swing.plaf.basic;import java.awt.*;import java.awt.event.*;import java.beans.*;import java.net.URL;import java.net.MalformedURLException;import javax.swing.*;import javax.swing.text.*;import javax.swing.text.html.*;import javax.swing.plaf.*;import javax.swing.border.*;/** * Provides the look and feel for a JEditorPane. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing.  As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author  Timothy Prinzing * @version 1.33 11/10/05 */public class BasicEditorPaneUI extends BasicTextUI {    /**     * Creates a UI for the JTextPane.     *     * @param c the JTextPane component     * @return the UI     */    public static ComponentUI createUI(JComponent c) {        return new BasicEditorPaneUI();    }    /**     * Creates a new BasicEditorPaneUI.     */    public BasicEditorPaneUI() {	super();    }    /**     * Fetches the name used as a key to lookup properties through the     * UIManager.  This is used as a prefix to all the standard     * text properties.     *     * @return the name ("EditorPane")     */    protected String getPropertyPrefix() {	return "EditorPane";    }    /**     *{@inheritDoc}     *     * @since 1.5     */    public void installUI(JComponent c) {        super.installUI(c);        updateDisplayProperties(c.getFont(),                                c.getForeground());    }    /**     *{@inheritDoc}     *     * @since 1.5     */    public void uninstallUI(JComponent c) {        cleanDisplayProperties();        super.uninstallUI(c);    }        /**     * Fetches the EditorKit for the UI.  This is whatever is     * currently set in the associated JEditorPane.     *     * @return the editor capabilities     * @see TextUI#getEditorKit     */    public EditorKit getEditorKit(JTextComponent tc) {	JEditorPane pane = (JEditorPane) getComponent();	return pane.getEditorKit();    }    /**     * Fetch an action map to use.  The map for a JEditorPane     * is not shared because it changes with the EditorKit.     */    ActionMap getActionMap() {        ActionMap am = new ActionMapUIResource();        am.put("requestFocus", new FocusAction());	EditorKit editorKit = getEditorKit(getComponent());	if (editorKit != null) {	    Action[] actions = editorKit.getActions();	    if (actions != null) {		addActions(am, actions);	    }	}        am.put(TransferHandler.getCutAction().getValue(Action.NAME),                TransferHandler.getCutAction());        am.put(TransferHandler.getCopyAction().getValue(Action.NAME),                TransferHandler.getCopyAction());        am.put(TransferHandler.getPasteAction().getValue(Action.NAME),                TransferHandler.getPasteAction());	return am;    }    /**     * This method gets called when a bound property is changed     * on the associated JTextComponent.  This is a hook     * which UI implementations may change to reflect how the     * UI displays bound properties of JTextComponent subclasses.     * This is implemented to rebuild the ActionMap based upon an     * EditorKit change.     *     * @param evt the property change event     */    protected void propertyChange(PropertyChangeEvent evt) {        String name = evt.getPropertyName();	if ("editorKit".equals(name)) {	    ActionMap map = SwingUtilities.getUIActionMap(getComponent());	    if (map != null) {		Object oldValue = evt.getOldValue();		if (oldValue instanceof EditorKit) {		    Action[] actions = ((EditorKit)oldValue).getActions();		    if (actions != null) {			removeActions(map, actions);		    }		}		Object newValue = evt.getNewValue();		if (newValue instanceof EditorKit) {		    Action[] actions = ((EditorKit)newValue).getActions();		    if (actions != null) {			addActions(map, actions);		    }		}	    }	    updateFocusTraversalKeys();	} else if ("editable".equals(name)) {	    updateFocusTraversalKeys();	} else if ("foreground".equals(name)                   || "font".equals(name)                   || "document".equals(name)                   || JEditorPane.W3C_LENGTH_UNITS.equals(name)                   || JEditorPane.HONOR_DISPLAY_PROPERTIES.equals(name)                   ) {            JComponent c = getComponent();            updateDisplayProperties(c.getFont(), c.getForeground());            if ( JEditorPane.W3C_LENGTH_UNITS.equals(name)                 || JEditorPane.HONOR_DISPLAY_PROPERTIES.equals(name) ) {                modelChanged();            }            if ("foreground".equals(name)) {                Object honorDisplayPropertiesObject = c.                    getClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);                boolean honorDisplayProperties = false;                if (honorDisplayPropertiesObject instanceof Boolean) {                    honorDisplayProperties =                         ((Boolean)honorDisplayPropertiesObject).booleanValue();                }                if (honorDisplayProperties) {                    modelChanged();                }            }                       }    }    void removeActions(ActionMap map, Action[] actions) {	int n = actions.length;	for (int i = 0; i < n; i++) {	    Action a = actions[i];	    map.remove(a.getValue(Action.NAME));	}    }    void addActions(ActionMap map, Action[] actions) {	int n = actions.length;	for (int i = 0; i < n; i++) {	    Action a = actions[i];	    map.put(a.getValue(Action.NAME), a);	}    }    void updateDisplayProperties(Font font, Color fg) {        JComponent c = getComponent();        Object honorDisplayPropertiesObject = c.            getClientProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);        boolean honorDisplayProperties = false;        Object w3cLengthUnitsObject = c.getClientProperty(JEditorPane.                                                          W3C_LENGTH_UNITS);        boolean w3cLengthUnits = false;        if (honorDisplayPropertiesObject instanceof Boolean) {            honorDisplayProperties =                 ((Boolean)honorDisplayPropertiesObject).booleanValue();        }        if (w3cLengthUnitsObject instanceof Boolean) {            w3cLengthUnits = ((Boolean)w3cLengthUnitsObject).booleanValue();        }        if (this instanceof BasicTextPaneUI            || honorDisplayProperties) {             //using equals because can not use UIResource for Boolean            Document doc = getComponent().getDocument();            if (doc instanceof StyledDocument) {                if (doc instanceof HTMLDocument                    && honorDisplayProperties) {                    updateCSS(font, fg);                } else {                    updateStyle(font, fg);                }            }        } else {            cleanDisplayProperties();        }        if ( w3cLengthUnits ) {            Document doc = getComponent().getDocument();            if (doc instanceof HTMLDocument) {                StyleSheet documentStyleSheet =                     ((HTMLDocument)doc).getStyleSheet();                documentStyleSheet.addRule("W3C_LENGTH_UNITS_ENABLE");            }        } else {            Document doc = getComponent().getDocument();            if (doc instanceof HTMLDocument) {                StyleSheet documentStyleSheet =                     ((HTMLDocument)doc).getStyleSheet();                documentStyleSheet.addRule("W3C_LENGTH_UNITS_DISABLE");            }        }    }        /**     * Attribute key to reference the default font.     * used in javax.swing.text.StyleContext.getFont     * to resolve the default font.     */    private static final String FONT_ATTRIBUTE_KEY = "FONT_ATTRIBUTE_KEY";    void cleanDisplayProperties() {        Document document = getComponent().getDocument();        if (document instanceof HTMLDocument) {            StyleSheet documentStyleSheet =                 ((HTMLDocument)document).getStyleSheet();            StyleSheet[] styleSheets = documentStyleSheet.getStyleSheets();            if (styleSheets != null) {                for (StyleSheet s : styleSheets) {                    if (s instanceof StyleSheetUIResource) {                        documentStyleSheet.removeStyleSheet(s);                        documentStyleSheet.addRule("BASE_SIZE_DISABLE");                        break;                    }                }            }            Style style = ((StyledDocument) document).getStyle(StyleContext.DEFAULT_STYLE);            style.removeAttribute(FONT_ATTRIBUTE_KEY);        }    }        static class StyleSheetUIResource extends StyleSheet implements UIResource {    }        private void updateCSS(Font font, Color fg) {        JTextComponent component = getComponent();        Document document = component.getDocument();        if (document instanceof HTMLDocument) {            StyleSheet styleSheet = new StyleSheetUIResource();            StyleSheet documentStyleSheet =                 ((HTMLDocument)document).getStyleSheet();            StyleSheet[] styleSheets = documentStyleSheet.getStyleSheets();            if (styleSheets != null) {                for (StyleSheet s : styleSheets) {                    if (s instanceof StyleSheetUIResource) {                        documentStyleSheet.removeStyleSheet(s);                    }                }            }            String cssRule = com.sun.java.swing.                SwingUtilities2.displayPropertiesToCSS(font,                                                       fg);            styleSheet.addRule(cssRule);            documentStyleSheet.addStyleSheet(styleSheet);            documentStyleSheet.addRule("BASE_SIZE " +                                        component.getFont().getSize());            Style style = ((StyledDocument) document).getStyle(StyleContext.DEFAULT_STYLE);            style.addAttribute(FONT_ATTRIBUTE_KEY, font);        }    }    private void updateStyle(Font font, Color fg) {        updateFont(font);        updateForeground(fg);    }    /**     * Update the color in the default style of the document.     *     * @param color the new color to use or null to remove the color attribute     *              from the document's style     */    private void updateForeground(Color color) {        StyledDocument doc = (StyledDocument)getComponent().getDocument();        Style style = doc.getStyle(StyleContext.DEFAULT_STYLE);        if (style == null) {            return;        }        if (color == null) {            style.removeAttribute(StyleConstants.Foreground);        } else {            StyleConstants.setForeground(style, color);        }    }        /**     * Update the font in the default style of the document.     *     * @param font the new font to use or null to remove the font attribute     *             from the document's style     */    private void updateFont(Font font) {        StyledDocument doc = (StyledDocument)getComponent().getDocument();        Style style = doc.getStyle(StyleContext.DEFAULT_STYLE);        if (style == null) {            return;        }        if (font == null) {            style.removeAttribute(StyleConstants.FontFamily);            style.removeAttribute(StyleConstants.FontSize);            style.removeAttribute(StyleConstants.Bold);            style.removeAttribute(StyleConstants.Italic);            style.removeAttribute(FONT_ATTRIBUTE_KEY);        } else {            StyleConstants.setFontFamily(style, font.getName());            StyleConstants.setFontSize(style, font.getSize());            StyleConstants.setBold(style, font.isBold());            StyleConstants.setItalic(style, font.isItalic());            style.addAttribute(FONT_ATTRIBUTE_KEY, font);        }    }}