/*
* @(#)MotifScrollPaneUI.java 1.19 04/03/03
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package com.sun.java.swing.plaf.motif;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicScrollPaneUI;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
/**
* A CDE/Motif L&F implementation of ScrollPaneUI.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is appropriate
* for short term storage or RMI between applications running the same
* version of Swing. A future release of Swing will provide support for
* long term persistence.
*
* @version 1.10 08/28/98
* @author Hans Muller
*/
public class MotifScrollPaneUI extends BasicScrollPaneUI
{
private final static Border vsbMarginBorderR = new EmptyBorder(0, 4, 0, 0);
private final static Border vsbMarginBorderL = new EmptyBorder(0, 0, 0, 4);
private final static Border hsbMarginBorder = new EmptyBorder(4, 0, 0, 0);
private CompoundBorder vsbBorder;
private CompoundBorder hsbBorder;
private PropertyChangeListener propertyChangeHandler;
protected void installListeners(JScrollPane scrollPane) {
super.installListeners(scrollPane);
propertyChangeHandler = createPropertyChangeHandler();
scrollPane.addPropertyChangeListener(propertyChangeHandler);
}
protected void uninstallListeners(JScrollPane scrollPane) {
super.uninstallListeners(scrollPane);
scrollPane.removePropertyChangeListener(propertyChangeHandler);
}
private PropertyChangeListener createPropertyChangeHandler() {
return new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent e) {
String propertyName = e.getPropertyName();
if (propertyName.equals("componentOrientation")) {
JScrollPane pane = (JScrollPane)e.getSource();
JScrollBar vsb = pane.getVerticalScrollBar();
if (vsb != null && vsbBorder != null &&
vsb.getBorder() == vsbBorder) {
// The Border on the verticall scrollbar matches
// what we installed, reset it.
if (MotifGraphicsUtils.isLeftToRight(pane)) {
vsbBorder = new CompoundBorder(vsbMarginBorderR,
vsbBorder.getInsideBorder());
} else {
vsbBorder = new CompoundBorder(vsbMarginBorderL,
vsbBorder.getInsideBorder());
}
vsb.setBorder(vsbBorder);
}
}
}};
}
protected void installDefaults(JScrollPane scrollpane) {
super.installDefaults(scrollpane);
JScrollBar vsb = scrollpane.getVerticalScrollBar();
if (vsb != null) {
if (MotifGraphicsUtils.isLeftToRight(scrollpane)) {
vsbBorder = new CompoundBorder(vsbMarginBorderR,
vsb.getBorder());
}
else {
vsbBorder = new CompoundBorder(vsbMarginBorderL,
vsb.getBorder());
}
vsb.setBorder(vsbBorder);
}
JScrollBar hsb = scrollpane.getHorizontalScrollBar();
if (hsb != null) {
hsbBorder = new CompoundBorder(hsbMarginBorder, hsb.getBorder());
hsb.setBorder(hsbBorder);
}
}
protected void uninstallDefaults(JScrollPane c) {
super.uninstallDefaults(c);
JScrollBar vsb = scrollpane.getVerticalScrollBar();
if (vsb != null) {
if (vsb.getBorder() == vsbBorder) {
vsb.setBorder(null);
}
vsbBorder = null;
}
JScrollBar hsb = scrollpane.getHorizontalScrollBar();
if (hsb != null) {
if (hsb.getBorder() == hsbBorder) {
hsb.setBorder(null);
}
hsbBorder = null;
}
}
public static ComponentUI createUI(JComponent x) {
return new MotifScrollPaneUI();
}
}
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