/* * @(#)BasicPanelUI.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.basic;import java.awt.*;import javax.swing.*;import javax.swing.border.*;import javax.swing.plaf.*;import java.awt.*;import java.awt.event.*;/** * BasicPanel implementation * * @version 1.13 11/17/05 * @author Steve Wilson */public class BasicPanelUI extends PanelUI {    // Shared UI object    private static PanelUI panelUI;    public static ComponentUI createUI(JComponent c) {	if(panelUI == null) {            panelUI = new BasicPanelUI();	}        return panelUI;    }    public void installUI(JComponent c) {        JPanel p = (JPanel)c;        super.installUI(p);        installDefaults(p);    }    public void uninstallUI(JComponent c) {        JPanel p = (JPanel)c;        uninstallDefaults(p);        super.uninstallUI(c);    }    protected void installDefaults(JPanel p) {        LookAndFeel.installColorsAndFont(p,					 "Panel.background",					 "Panel.foreground",					 "Panel.font");        LookAndFeel.installBorder(p,"Panel.border");        LookAndFeel.installProperty(p, "opaque", Boolean.TRUE);    }    protected void uninstallDefaults(JPanel p) {        LookAndFeel.uninstallBorder(p);    }    /**     * Returns the baseline.     *     * @throws NullPointerException {@inheritDoc}     * @throws IllegalArgumentException {@inheritDoc}     * @see javax.swing.JComponent#getBaseline(int, int)     * @since 1.6     */    public int getBaseline(JComponent c, int width, int height) {        super.getBaseline(c, width, height);        Border border = c.getBorder();        if (border instanceof AbstractBorder) {            return ((AbstractBorder)border).getBaseline(c, width, height);        }        return -1;    }    /**     * Returns an enum indicating how the baseline of the component     * changes as the size changes.     *     * @throws NullPointerException {@inheritDoc}     * @see javax.swing.JComponent#getBaseline(int, int)     * @since 1.6     */    public Component.BaselineResizeBehavior getBaselineResizeBehavior(            JComponent c) {        super.getBaselineResizeBehavior(c);        Border border = c.getBorder();        if (border instanceof AbstractBorder) {            return ((AbstractBorder)border).getBaselineResizeBehavior(c);        }        return Component.BaselineResizeBehavior.OTHER;    }}