/* * @(#)SynthPopupMenuUI.java	1.21 03/12/19 * * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package javax.swing.plaf.synth;import javax.swing.*;import javax.swing.event.*;import javax.swing.plaf.*;import javax.swing.plaf.basic.*;import javax.swing.border.*;import java.applet.Applet;import java.awt.Component;import java.awt.Container;import java.awt.Dimension;import java.awt.Graphics;import java.awt.KeyboardFocusManager;import java.awt.Window;import java.awt.event.*;import java.awt.AWTEvent;import java.awt.Toolkit;import java.beans.PropertyChangeListener;import java.beans.PropertyChangeEvent;import java.util.*;import sun.swing.plaf.synth.SynthUI;/** * Synth's PopupMenuUI. * * @version 1.21, 12/19/03 * @author Georges Saab * @author David Karlton * @author Arnaud Weber */class SynthPopupMenuUI extends BasicPopupMenuUI implements                PropertyChangeListener, SynthUI {    /**     * Maximum size of the text portion of the children menu items.     */    private int maxTextWidth;    /**     * Maximum size of the text for the acclerator portion of the children     * menu items.     */    private int maxAcceleratorWidth;    private SynthStyle style;    public static ComponentUI createUI(JComponent x) {	return new SynthPopupMenuUI();    }    public void installDefaults() {	if (popupMenu.getLayout() == null ||	    popupMenu.getLayout() instanceof UIResource) {	    popupMenu.setLayout(new DefaultMenuLayout(                                    popupMenu, BoxLayout.Y_AXIS));        }        updateStyle(popupMenu);    }    private void updateStyle(JComponent c) {        SynthContext context = getContext(c, ENABLED);        SynthStyle oldStyle = style;        style = SynthLookAndFeel.updateStyle(context, this);        if (style != oldStyle) {            if (oldStyle != null) {                uninstallKeyboardActions();                installKeyboardActions();            }        }        context.dispose();    }    protected void installListeners() {        super.installListeners();        popupMenu.addPropertyChangeListener(this);    }    protected void uninstallDefaults() {        SynthContext context = getContext(popupMenu, ENABLED);        style.uninstallDefaults(context);        context.dispose();        style = null;        if (popupMenu.getLayout() instanceof UIResource) {            popupMenu.setLayout(null);        }    }    protected void uninstallListeners() {        super.uninstallListeners();        popupMenu.removePropertyChangeListener(this);    }    public SynthContext getContext(JComponent c) {        return getContext(c, getComponentState(c));    }    private SynthContext getContext(JComponent c, int state) {        return SynthContext.getContext(SynthContext.class, c,                    SynthLookAndFeel.getRegion(c), style, state);    }    private Region getRegion(JComponent c) {        return SynthLookAndFeel.getRegion(c);    }    private int getComponentState(JComponent c) {        return SynthLookAndFeel.getComponentState(c);    }    /**     * Resets the max text and accerator widths.     */    void resetAcceleratorWidths() {        maxTextWidth = maxAcceleratorWidth = 0;    }    /**     * Adjusts the width needed to display the maximum menu item string.     *     * @param width Text width.     * @return max width     */    int adjustTextWidth(int width) {        maxTextWidth = Math.max(maxTextWidth, width);        return maxTextWidth;    }    /**     * Adjusts the width needed to display the maximum accelerator.     *     * @param width Text width.     * @return max width     */    int adjustAcceleratorWidth(int width) {        maxAcceleratorWidth = Math.max(maxAcceleratorWidth, width);        return maxAcceleratorWidth;    }    /**     * Maximum size to display text of children menu items.     */    int getMaxTextWidth() {        return maxTextWidth;    }    /**     * Maximum size needed to display accelerators of children menu items.     */    int getMaxAcceleratorWidth() {        return maxAcceleratorWidth;    }    public void update(Graphics g, JComponent c) {        SynthContext context = getContext(c);        SynthLookAndFeel.update(context, g);        context.getPainter().paintPopupMenuBackground(context,                          g, 0, 0, c.getWidth(), c.getHeight());        paint(context, g);        context.dispose();    }    public void paint(Graphics g, JComponent c) {        SynthContext context = getContext(c);        paint(context, g);        context.dispose();    }    protected void paint(SynthContext context, Graphics g) {    }    public void paintBorder(SynthContext context, Graphics g, int x,                            int y, int w, int h) {        context.getPainter().paintPopupMenuBorder(context, g, x, y, w, h);    }    public void propertyChange(PropertyChangeEvent e) {        if (SynthLookAndFeel.shouldUpdateStyle(e)) {            updateStyle(popupMenu);        }    }}