synthrootpaneui.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)SynthRootPaneUI.java	1.13 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.swing.plaf.synth;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicRootPaneUI;
import sun.swing.plaf.synth.SynthUI;

/**
 * Synth's RootPaneUI.
 *
 * @version 1.13, 11/17/05
 * @author Scott Violet
 */
class SynthRootPaneUI extends BasicRootPaneUI implements SynthUI {
    private SynthStyle style;

    public static ComponentUI createUI(JComponent c) {
        return new SynthRootPaneUI();
    }

    protected void installDefaults(JRootPane c){
        updateStyle(c);
    }

    protected void uninstallDefaults(JRootPane root) {
        SynthContext context = getContext(root, ENABLED);

        style.uninstallDefaults(context);
        context.dispose();
        style = null;
    }

    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);
    }

    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((JRootPane)c);
                installKeyboardActions((JRootPane)c);
            }
        }
        context.dispose();
    }

    public void update(Graphics g, JComponent c) {
        SynthContext context = getContext(c);

        SynthLookAndFeel.update(context, g);
        context.getPainter().paintRootPaneBackground(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().paintRootPaneBorder(context, g, x, y, w, h);
    }

    /**
     * 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 (SynthLookAndFeel.shouldUpdateStyle(e)) {
            updateStyle((JRootPane)e.getSource());
        }
        super.propertyChange(e);
    }
}