- /*
- * @(#)MetalScrollPaneUI.java 1.17 03/01/27
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package javax.swing.plaf.metal;
-
- import javax.swing.*;
- import javax.swing.event.*;
- import javax.swing.border.*;
- import javax.swing.plaf.*;
- import javax.swing.plaf.basic.*;
-
- import java.awt.*;
- import java.beans.*;
- import java.awt.event.*;
-
-
- /**
- * A Metal 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. As of 1.4, support for long term storage
- * of all JavaBeans<sup><font size="-2">TM</font></sup>
- * has been added to the <code>java.beans</code> package.
- * Please see {@link java.beans.XMLEncoder}.
- *
- * @version 1.17 01/27/03
- * @author Steve Wilson
- */
- public class MetalScrollPaneUI extends BasicScrollPaneUI
- {
-
- private PropertyChangeListener scrollBarSwapListener;
-
- public static ComponentUI createUI(JComponent x) {
- return new MetalScrollPaneUI();
- }
-
- public void installUI(JComponent c) {
-
- super.installUI(c);
-
- JScrollPane sp = (JScrollPane)c;
- JScrollBar hsb = sp.getHorizontalScrollBar();
- JScrollBar vsb = sp.getVerticalScrollBar();
- updateScrollbarsFreeStanding();
- }
-
- public void uninstallUI(JComponent c) {
- super.uninstallUI(c);
-
- JScrollPane sp = (JScrollPane)c;
- JScrollBar hsb = sp.getHorizontalScrollBar();
- JScrollBar vsb = sp.getVerticalScrollBar();
- hsb.putClientProperty( MetalScrollBarUI.FREE_STANDING_PROP, null);
- vsb.putClientProperty( MetalScrollBarUI.FREE_STANDING_PROP, null);
- }
-
-
- public void installListeners(JScrollPane scrollPane) {
- super.installListeners(scrollPane);
- scrollBarSwapListener = createScrollBarSwapListener();
- scrollPane.addPropertyChangeListener(scrollBarSwapListener);
- }
-
-
- public void uninstallListeners(JScrollPane scrollPane) {
- super.uninstallListeners(scrollPane);
-
- scrollPane.removePropertyChangeListener(scrollBarSwapListener);
- }
-
- /**
- * If the border of the scrollpane is an instance of
- * <code>MetalBorders.ScrollPaneBorder</code>, the client property
- * <code>FREE_STANDING_PROP</code> of the scrollbars
- * is set to false, otherwise it is set to true.
- */
- private void updateScrollbarsFreeStanding() {
- if (scrollpane == null) {
- return;
- }
- Border border = scrollpane.getBorder();
- Object value;
-
- if (border instanceof MetalBorders.ScrollPaneBorder) {
- value = Boolean.FALSE;
- }
- else {
- value = Boolean.TRUE;
- }
- scrollpane.getHorizontalScrollBar().putClientProperty
- (MetalScrollBarUI.FREE_STANDING_PROP, value);
- scrollpane.getVerticalScrollBar().putClientProperty
- (MetalScrollBarUI.FREE_STANDING_PROP, value);
- }
-
- protected PropertyChangeListener createScrollBarSwapListener() {
- return new PropertyChangeListener() {
- public void propertyChange(PropertyChangeEvent e) {
- String propertyName = e.getPropertyName();
- if (propertyName.equals("verticalScrollBar") ||
- propertyName.equals("horizontalScrollBar")) {
- ((JScrollBar)e.getOldValue()).putClientProperty( MetalScrollBarUI.FREE_STANDING_PROP,
- null);
- ((JScrollBar)e.getNewValue()).putClientProperty( MetalScrollBarUI.FREE_STANDING_PROP,
- Boolean.FALSE);
- }
- else if ("border".equals(propertyName)) {
- updateScrollbarsFreeStanding();
- }
- }};
- }
-
- }