/* * @(#)BasicRootPaneUI.java	1.15 03/12/19 * * 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.event.ActionEvent;import java.awt.KeyboardFocusManager;import java.awt.Component;import java.awt.Point;import java.awt.Rectangle;import java.beans.PropertyChangeEvent;import java.beans.PropertyChangeListener;import javax.swing.*;import javax.swing.plaf.*;import sun.swing.DefaultLookup;import sun.swing.UIAction;/** * Basic implementation of RootPaneUI, there is one shared between all * JRootPane instances. * * @version 1.15 12/19/03 * @author Scott Violet */public class BasicRootPaneUI extends RootPaneUI implements                  PropertyChangeListener {    private static RootPaneUI rootPaneUI = new BasicRootPaneUI();    public static ComponentUI createUI(JComponent c) {        return rootPaneUI;    }    public void installUI(JComponent c) {         installDefaults((JRootPane)c);        installComponents((JRootPane)c);        installListeners((JRootPane)c);        installKeyboardActions((JRootPane)c);    }        public void uninstallUI(JComponent c) {         uninstallDefaults((JRootPane)c);        uninstallComponents((JRootPane)c);        uninstallListeners((JRootPane)c);        uninstallKeyboardActions((JRootPane)c);    }    protected void installDefaults(JRootPane c){        LookAndFeel.installProperty(c, "opaque", Boolean.FALSE);    }    protected void installComponents(JRootPane root) {    }    protected void installListeners(JRootPane root) {	root.addPropertyChangeListener(this);    }    protected void installKeyboardActions(JRootPane root) {	InputMap km = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW, root);	SwingUtilities.replaceUIInputMap(root,                JComponent.WHEN_IN_FOCUSED_WINDOW, km);        km = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,                root);        SwingUtilities.replaceUIInputMap(root,                JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, km);        LazyActionMap.installLazyActionMap(root, BasicRootPaneUI.class,                "RootPane.actionMap");	updateDefaultButtonBindings(root);    }    protected void uninstallDefaults(JRootPane root) {    }    protected void uninstallComponents(JRootPane root) {    }    protected void uninstallListeners(JRootPane root) {	root.removePropertyChangeListener(this);    }    protected void uninstallKeyboardActions(JRootPane root) {	SwingUtilities.replaceUIInputMap(root, JComponent.				       WHEN_IN_FOCUSED_WINDOW, null);	SwingUtilities.replaceUIActionMap(root, null);    }    InputMap getInputMap(int condition, JComponent c) {        if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {            return (InputMap)DefaultLookup.get(c, this,                                       "RootPane.ancestorInputMap");        }	if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {	    return createInputMap(condition, c);	}	return null;    }    ComponentInputMap createInputMap(int condition, JComponent c) {	return new RootPaneInputMap(c);    }    static void loadActionMap(LazyActionMap map) {	map.put(new Actions(Actions.PRESS));	map.put(new Actions(Actions.RELEASE));	map.put(new Actions(Actions.POST_POPUP));    }    /**     * Invoked when the default button property has changed. This reloads     * the bindings from the defaults table with name     * <code>RootPane.defaultButtonWindowKeyBindings</code>.     */    void updateDefaultButtonBindings(JRootPane root) {	InputMap km = SwingUtilities.getUIInputMap(root, JComponent.					       WHEN_IN_FOCUSED_WINDOW);	while (km != null && !(km instanceof RootPaneInputMap)) {	    km = km.getParent();	}	if (km != null) {	    km.clear();	    if (root.getDefaultButton() != null) {		Object[] bindings = (Object[])DefaultLookup.get(root, this,                           "RootPane.defaultButtonWindowKeyBindings");		if (bindings != null) {		    LookAndFeel.loadKeyBindings(km, bindings);		}	    }	}    }    /**     * Invoked when a property changes on the root pane. If the event     * indicates the <code>defaultButton</code> has changed, this will     * reinstall the keyboard actions.     */    public void propertyChange(PropertyChangeEvent e) {	if(e.getPropertyName().equals("defaultButton")) {	    JRootPane rootpane = (JRootPane)e.getSource();	    updateDefaultButtonBindings(rootpane);	    if (rootpane.getClientProperty("temporaryDefaultButton") == null) {		rootpane.putClientProperty("initialDefaultButton", e.getNewValue());	    }	}    }    static class Actions extends UIAction {        public static final String PRESS = "press";        public static final String RELEASE = "release";        public static final String POST_POPUP = "postPopup";        Actions(String name) {            super(name);        }        public void actionPerformed(ActionEvent evt) {            JRootPane root = (JRootPane)evt.getSource();	    JButton owner = root.getDefaultButton();            String key = getName();            if (key == POST_POPUP) { // Action to post popup                Component c = KeyboardFocusManager                        .getCurrentKeyboardFocusManager()                         .getFocusOwner();                if(c instanceof JComponent) {                    JComponent src = (JComponent) c;                    JPopupMenu jpm = src.getComponentPopupMenu();                    if(jpm != null) {                        Point pt = src.getPopupLocation(null);                        if(pt == null) {                            Rectangle vis = src.getVisibleRect();                            pt = new Point(vis.x+vis.width/2,                                           vis.y+vis.height/2);                        }                        jpm.show(c, pt.x, pt.y);                    }                }            }            else if (owner != null                     && SwingUtilities.getRootPane(owner) == root) {                if (key == PRESS) {                    owner.doClick(20);                }            }        }        public boolean isEnabled(Object sender) {            String key = getName();            if(key == POST_POPUP) {                MenuElement[] elems = MenuSelectionManager                        .defaultManager()                        .getSelectedPath();                if(elems != null && elems.length != 0) {                    return false;                    // We shall not interfere with already opened menu                }                Component c = KeyboardFocusManager                       .getCurrentKeyboardFocusManager()                        .getFocusOwner();                if(c instanceof JComponent) {                    JComponent src = (JComponent) c;                    return src.getComponentPopupMenu() != null;                }                return false;            }                            if (sender != null && sender instanceof JRootPane) {	        JButton owner = ((JRootPane)sender).getDefaultButton();                return (owner != null && owner.getModel().isEnabled());            }            return true;        }    }    private static class RootPaneInputMap extends ComponentInputMapUIResource {	public RootPaneInputMap(JComponent c) {	    super(c);	}    }}