/* * @(#)SynthPanelUI.java	1.12 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 java.awt.*;import javax.swing.*;import javax.swing.border.*;import javax.swing.plaf.*;import javax.swing.plaf.basic.BasicPanelUI;import java.awt.*;import java.awt.event.*;import java.beans.*;import sun.swing.plaf.synth.SynthUI;/** * Synth's PanelUI. * * @version 1.12, 12/19/03 * @author Steve Wilson */class SynthPanelUI extends BasicPanelUI implements PropertyChangeListener,        SynthUI {    private SynthStyle style;    public static ComponentUI createUI(JComponent c) {        return new SynthPanelUI();    }    public void installUI(JComponent c) {        JPanel p = (JPanel)c;        super.installUI(c);        installListeners(p);    }    public void uninstallUI(JComponent c) {        JPanel p = (JPanel)c;        uninstallListeners(p);        super.uninstallUI(c);    }    protected void installListeners(JPanel p) {        p.addPropertyChangeListener(this);    }    protected void uninstallListeners(JPanel p) {        p.removePropertyChangeListener(this);    }    protected void installDefaults(JPanel p) {        updateStyle(p);    }    protected void uninstallDefaults(JPanel p) {        SynthContext context = getContext(p, ENABLED);        style.uninstallDefaults(context);        context.dispose();        style = null;    }    private void updateStyle(JPanel c) {        SynthContext context = getContext(c, ENABLED);        style = SynthLookAndFeel.updateStyle(context, this);        context.dispose();    }    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);    }    public void update(Graphics g, JComponent c) {        SynthContext context = getContext(c);        SynthLookAndFeel.update(context, g);        context.getPainter().paintPanelBackground(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) {        // do actual painting    }    public void paintBorder(SynthContext context, Graphics g, int x,                            int y, int w, int h) {        context.getPainter().paintPanelBorder(context, g, x, y, w, h);    }    public void propertyChange(PropertyChangeEvent pce) {        if (SynthLookAndFeel.shouldUpdateStyle(pce)) {            updateStyle((JPanel)pce.getSource());        }    }}