author | ohair |
Tue, 28 Dec 2010 15:53:50 -0800 | |
changeset 7668 | d4a77089c587 |
parent 7010 | 324a3db27d8f |
child 20169 | d7fa6d7586c9 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
7668 | 2 |
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.swing.plaf.basic; |
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import sun.swing.DefaultLookup; |
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import sun.swing.UIAction; |
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import javax.swing.*; |
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import javax.swing.event.*; |
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import javax.swing.border.*; |
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import javax.swing.plaf.*; |
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import java.beans.PropertyChangeListener; |
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import java.beans.PropertyChangeEvent; |
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import java.awt.Component; |
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import java.awt.Rectangle; |
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import java.awt.Dimension; |
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import java.awt.Point; |
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import java.awt.Insets; |
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import java.awt.Graphics; |
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import java.awt.event.*; |
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/** |
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* A default L&F implementation of ScrollPaneUI. |
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* |
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* @author Hans Muller |
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*/ |
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public class BasicScrollPaneUI |
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extends ScrollPaneUI implements ScrollPaneConstants |
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{ |
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protected JScrollPane scrollpane; |
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protected ChangeListener vsbChangeListener; |
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protected ChangeListener hsbChangeListener; |
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protected ChangeListener viewportChangeListener; |
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protected PropertyChangeListener spPropertyChangeListener; |
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private MouseWheelListener mouseScrollListener; |
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100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
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private int oldExtent = Integer.MIN_VALUE; |
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/** |
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* PropertyChangeListener installed on the vertical scrollbar. |
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*/ |
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private PropertyChangeListener vsbPropertyChangeListener; |
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/** |
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* PropertyChangeListener installed on the horizontal scrollbar. |
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*/ |
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private PropertyChangeListener hsbPropertyChangeListener; |
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private Handler handler; |
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/** |
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* State flag that shows whether setValue() was called from a user program |
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* before the value of "extent" was set in right-to-left component |
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* orientation. |
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*/ |
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private boolean setValueCalled = false; |
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public static ComponentUI createUI(JComponent x) { |
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return new BasicScrollPaneUI(); |
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} |
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static void loadActionMap(LazyActionMap map) { |
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map.put(new Actions(Actions.SCROLL_UP)); |
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map.put(new Actions(Actions.SCROLL_DOWN)); |
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map.put(new Actions(Actions.SCROLL_HOME)); |
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map.put(new Actions(Actions.SCROLL_END)); |
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map.put(new Actions(Actions.UNIT_SCROLL_UP)); |
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map.put(new Actions(Actions.UNIT_SCROLL_DOWN)); |
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map.put(new Actions(Actions.SCROLL_LEFT)); |
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map.put(new Actions(Actions.SCROLL_RIGHT)); |
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map.put(new Actions(Actions.UNIT_SCROLL_RIGHT)); |
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map.put(new Actions(Actions.UNIT_SCROLL_LEFT)); |
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} |
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public void paint(Graphics g, JComponent c) { |
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Border vpBorder = scrollpane.getViewportBorder(); |
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if (vpBorder != null) { |
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Rectangle r = scrollpane.getViewportBorderBounds(); |
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vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height); |
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} |
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} |
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/** |
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* @return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE) |
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*/ |
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public Dimension getMaximumSize(JComponent c) { |
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return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE); |
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} |
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protected void installDefaults(JScrollPane scrollpane) |
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{ |
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LookAndFeel.installBorder(scrollpane, "ScrollPane.border"); |
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LookAndFeel.installColorsAndFont(scrollpane, |
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"ScrollPane.background", |
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"ScrollPane.foreground", |
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"ScrollPane.font"); |
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Border vpBorder = scrollpane.getViewportBorder(); |
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if ((vpBorder == null) ||( vpBorder instanceof UIResource)) { |
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vpBorder = UIManager.getBorder("ScrollPane.viewportBorder"); |
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scrollpane.setViewportBorder(vpBorder); |
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} |
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LookAndFeel.installProperty(scrollpane, "opaque", Boolean.TRUE); |
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} |
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protected void installListeners(JScrollPane c) |
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{ |
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vsbChangeListener = createVSBChangeListener(); |
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vsbPropertyChangeListener = createVSBPropertyChangeListener(); |
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hsbChangeListener = createHSBChangeListener(); |
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hsbPropertyChangeListener = createHSBPropertyChangeListener(); |
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viewportChangeListener = createViewportChangeListener(); |
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spPropertyChangeListener = createPropertyChangeListener(); |
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JViewport viewport = scrollpane.getViewport(); |
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JScrollBar vsb = scrollpane.getVerticalScrollBar(); |
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JScrollBar hsb = scrollpane.getHorizontalScrollBar(); |
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if (viewport != null) { |
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viewport.addChangeListener(viewportChangeListener); |
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} |
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if (vsb != null) { |
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vsb.getModel().addChangeListener(vsbChangeListener); |
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vsb.addPropertyChangeListener(vsbPropertyChangeListener); |
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} |
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if (hsb != null) { |
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hsb.getModel().addChangeListener(hsbChangeListener); |
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hsb.addPropertyChangeListener(hsbPropertyChangeListener); |
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} |
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scrollpane.addPropertyChangeListener(spPropertyChangeListener); |
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mouseScrollListener = createMouseWheelListener(); |
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scrollpane.addMouseWheelListener(mouseScrollListener); |
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} |
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protected void installKeyboardActions(JScrollPane c) { |
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InputMap inputMap = getInputMap(JComponent. |
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WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
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SwingUtilities.replaceUIInputMap(c, JComponent. |
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WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap); |
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LazyActionMap.installLazyActionMap(c, BasicScrollPaneUI.class, |
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"ScrollPane.actionMap"); |
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} |
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InputMap getInputMap(int condition) { |
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if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { |
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InputMap keyMap = (InputMap)DefaultLookup.get(scrollpane, this, |
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"ScrollPane.ancestorInputMap"); |
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InputMap rtlKeyMap; |
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if (scrollpane.getComponentOrientation().isLeftToRight() || |
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((rtlKeyMap = (InputMap)DefaultLookup.get(scrollpane, this, |
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"ScrollPane.ancestorInputMap.RightToLeft")) == null)) { |
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return keyMap; |
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} else { |
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rtlKeyMap.setParent(keyMap); |
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return rtlKeyMap; |
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} |
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} |
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return null; |
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} |
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public void installUI(JComponent x) { |
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scrollpane = (JScrollPane)x; |
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installDefaults(scrollpane); |
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installListeners(scrollpane); |
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installKeyboardActions(scrollpane); |
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} |
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protected void uninstallDefaults(JScrollPane c) { |
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LookAndFeel.uninstallBorder(scrollpane); |
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if (scrollpane.getViewportBorder() instanceof UIResource) { |
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scrollpane.setViewportBorder(null); |
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} |
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} |
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protected void uninstallListeners(JComponent c) { |
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JViewport viewport = scrollpane.getViewport(); |
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JScrollBar vsb = scrollpane.getVerticalScrollBar(); |
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JScrollBar hsb = scrollpane.getHorizontalScrollBar(); |
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if (viewport != null) { |
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viewport.removeChangeListener(viewportChangeListener); |
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} |
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if (vsb != null) { |
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vsb.getModel().removeChangeListener(vsbChangeListener); |
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vsb.removePropertyChangeListener(vsbPropertyChangeListener); |
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} |
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if (hsb != null) { |
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hsb.getModel().removeChangeListener(hsbChangeListener); |
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hsb.removePropertyChangeListener(hsbPropertyChangeListener); |
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} |
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scrollpane.removePropertyChangeListener(spPropertyChangeListener); |
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if (mouseScrollListener != null) { |
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scrollpane.removeMouseWheelListener(mouseScrollListener); |
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} |
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vsbChangeListener = null; |
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hsbChangeListener = null; |
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viewportChangeListener = null; |
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spPropertyChangeListener = null; |
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mouseScrollListener = null; |
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handler = null; |
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} |
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protected void uninstallKeyboardActions(JScrollPane c) { |
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SwingUtilities.replaceUIActionMap(c, null); |
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SwingUtilities.replaceUIInputMap(c, JComponent. |
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WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null); |
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} |
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public void uninstallUI(JComponent c) { |
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uninstallDefaults(scrollpane); |
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uninstallListeners(scrollpane); |
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uninstallKeyboardActions(scrollpane); |
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scrollpane = null; |
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} |
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private Handler getHandler() { |
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if (handler == null) { |
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handler = new Handler(); |
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} |
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return handler; |
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} |
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protected void syncScrollPaneWithViewport() |
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{ |
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JViewport viewport = scrollpane.getViewport(); |
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JScrollBar vsb = scrollpane.getVerticalScrollBar(); |
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JScrollBar hsb = scrollpane.getHorizontalScrollBar(); |
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JViewport rowHead = scrollpane.getRowHeader(); |
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JViewport colHead = scrollpane.getColumnHeader(); |
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boolean ltr = scrollpane.getComponentOrientation().isLeftToRight(); |
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if (viewport != null) { |
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Dimension extentSize = viewport.getExtentSize(); |
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Dimension viewSize = viewport.getViewSize(); |
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Point viewPosition = viewport.getViewPosition(); |
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if (vsb != null) { |
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int extent = extentSize.height; |
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int max = viewSize.height; |
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int value = Math.max(0, Math.min(viewPosition.y, max - extent)); |
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vsb.setValues(value, extent, 0, max); |
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} |
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if (hsb != null) { |
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int extent = extentSize.width; |
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int max = viewSize.width; |
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int value; |
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if (ltr) { |
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value = Math.max(0, Math.min(viewPosition.x, max - extent)); |
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} else { |
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int currentValue = hsb.getValue(); |
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/* Use a particular formula to calculate "value" |
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* until effective x coordinate is calculated. |
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*/ |
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if (setValueCalled && ((max - currentValue) == viewPosition.x)) { |
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value = Math.max(0, Math.min(max - extent, currentValue)); |
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/* After "extent" is set, turn setValueCalled flag off. |
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*/ |
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if (extent != 0) { |
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setValueCalled = false; |
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} |
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} else { |
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if (extent > max) { |
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viewPosition.x = max - extent; |
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viewport.setViewPosition(viewPosition); |
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value = 0; |
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} else { |
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/* The following line can't handle a small value of |
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* viewPosition.x like Integer.MIN_VALUE correctly |
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* because (max - extent - viewPositoiin.x) causes |
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* an overflow. As a result, value becomes zero. |
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* (e.g. setViewPosition(Integer.MAX_VALUE, ...) |
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* in a user program causes a overflow. |
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* Its expected value is (max - extent).) |
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* However, this seems a trivial bug and adding a |
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* fix makes this often-called method slow, so I'll |
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* leave it until someone claims. |
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*/ |
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value = Math.max(0, Math.min(max - extent, max - extent - viewPosition.x)); |
|
3350
100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
|
326 |
if (oldExtent > extent) { |
100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
|
327 |
value -= oldExtent - extent; |
100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
|
328 |
} |
2 | 329 |
} |
330 |
} |
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331 |
} |
|
3350
100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
|
332 |
oldExtent = extent; |
2 | 333 |
hsb.setValues(value, extent, 0, max); |
334 |
} |
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335 |
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336 |
if (rowHead != null) { |
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Point p = rowHead.getViewPosition(); |
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p.y = viewport.getViewPosition().y; |
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p.x = 0; |
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rowHead.setViewPosition(p); |
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} |
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342 |
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343 |
if (colHead != null) { |
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Point p = colHead.getViewPosition(); |
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if (ltr) { |
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p.x = viewport.getViewPosition().x; |
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} else { |
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p.x = Math.max(0, viewport.getViewPosition().x); |
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349 |
} |
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350 |
p.y = 0; |
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colHead.setViewPosition(p); |
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} |
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353 |
} |
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354 |
} |
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355 |
||
356 |
/** |
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357 |
* Returns the baseline. |
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* |
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359 |
* @throws NullPointerException {@inheritDoc} |
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360 |
* @throws IllegalArgumentException {@inheritDoc} |
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361 |
* @see javax.swing.JComponent#getBaseline(int, int) |
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362 |
* @since 1.6 |
|
363 |
*/ |
|
364 |
public int getBaseline(JComponent c, int width, int height) { |
|
7010
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
365 |
if (c == null) { |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
366 |
throw new NullPointerException("Component must be non-null"); |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
367 |
} |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
368 |
|
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
369 |
if (width < 0 || height < 0) { |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
370 |
throw new IllegalArgumentException("Width and height must be >= 0"); |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
371 |
} |
324a3db27d8f
6632810: javax.swing.plaf.basic.BasicScrollPaneUI.getBaseline(JComponent, int, int) doesn't throw NPE and IAE
rupashka
parents:
5506
diff
changeset
|
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|
2 | 373 |
JViewport viewport = scrollpane.getViewport(); |
374 |
Insets spInsets = scrollpane.getInsets(); |
|
375 |
int y = spInsets.top; |
|
376 |
height = height - spInsets.top - spInsets.bottom; |
|
377 |
width = width - spInsets.left - spInsets.right; |
|
378 |
JViewport columnHeader = scrollpane.getColumnHeader(); |
|
379 |
if (columnHeader != null && columnHeader.isVisible()) { |
|
380 |
Component header = columnHeader.getView(); |
|
381 |
if (header != null && header.isVisible()) { |
|
382 |
// Header is always given it's preferred size. |
|
383 |
Dimension headerPref = header.getPreferredSize(); |
|
384 |
int baseline = header.getBaseline(headerPref.width, |
|
385 |
headerPref.height); |
|
386 |
if (baseline >= 0) { |
|
387 |
return y + baseline; |
|
388 |
} |
|
389 |
} |
|
390 |
Dimension columnPref = columnHeader.getPreferredSize(); |
|
391 |
height -= columnPref.height; |
|
392 |
y += columnPref.height; |
|
393 |
} |
|
394 |
Component view = (viewport == null) ? null : viewport.getView(); |
|
395 |
if (view != null && view.isVisible() && |
|
396 |
view.getBaselineResizeBehavior() == |
|
397 |
Component.BaselineResizeBehavior.CONSTANT_ASCENT) { |
|
398 |
Border viewportBorder = scrollpane.getViewportBorder(); |
|
399 |
if (viewportBorder != null) { |
|
400 |
Insets vpbInsets = viewportBorder.getBorderInsets(scrollpane); |
|
401 |
y += vpbInsets.top; |
|
402 |
height = height - vpbInsets.top - vpbInsets.bottom; |
|
403 |
width = width - vpbInsets.left - vpbInsets.right; |
|
404 |
} |
|
405 |
if (view.getWidth() > 0 && view.getHeight() > 0) { |
|
406 |
Dimension min = view.getMinimumSize(); |
|
407 |
width = Math.max(min.width, view.getWidth()); |
|
408 |
height = Math.max(min.height, view.getHeight()); |
|
409 |
} |
|
410 |
if (width > 0 && height > 0) { |
|
411 |
int baseline = view.getBaseline(width, height); |
|
412 |
if (baseline > 0) { |
|
413 |
return y + baseline; |
|
414 |
} |
|
415 |
} |
|
416 |
} |
|
417 |
return -1; |
|
418 |
} |
|
419 |
||
420 |
/** |
|
421 |
* Returns an enum indicating how the baseline of the component |
|
422 |
* changes as the size changes. |
|
423 |
* |
|
424 |
* @throws NullPointerException {@inheritDoc} |
|
425 |
* @see javax.swing.JComponent#getBaseline(int, int) |
|
426 |
* @since 1.6 |
|
427 |
*/ |
|
428 |
public Component.BaselineResizeBehavior getBaselineResizeBehavior( |
|
429 |
JComponent c) { |
|
430 |
super.getBaselineResizeBehavior(c); |
|
431 |
// Baseline is either from the header, in which case it's always |
|
432 |
// the same size and therefor can be created as CONSTANT_ASCENT. |
|
433 |
// If the header doesn't have a baseline than the baseline will only |
|
434 |
// be valid if it's BaselineResizeBehavior is |
|
435 |
// CONSTANT_ASCENT, so, return CONSTANT_ASCENT. |
|
436 |
return Component.BaselineResizeBehavior.CONSTANT_ASCENT; |
|
437 |
} |
|
438 |
||
439 |
||
440 |
/** |
|
441 |
* Listener for viewport events. |
|
442 |
*/ |
|
443 |
public class ViewportChangeHandler implements ChangeListener |
|
444 |
{ |
|
445 |
||
446 |
// NOTE: This class exists only for backward compatability. All |
|
447 |
// its functionality has been moved into Handler. If you need to add |
|
448 |
// new functionality add it to the Handler, but make sure this |
|
449 |
// class calls into the Handler. |
|
450 |
||
451 |
public void stateChanged(ChangeEvent e) { |
|
452 |
getHandler().stateChanged(e); |
|
453 |
} |
|
454 |
} |
|
455 |
||
456 |
protected ChangeListener createViewportChangeListener() { |
|
457 |
return getHandler(); |
|
458 |
} |
|
459 |
||
460 |
||
461 |
/** |
|
462 |
* Horizontal scrollbar listener. |
|
463 |
*/ |
|
464 |
public class HSBChangeListener implements ChangeListener |
|
465 |
{ |
|
466 |
||
467 |
// NOTE: This class exists only for backward compatability. All |
|
468 |
// its functionality has been moved into Handler. If you need to add |
|
469 |
// new functionality add it to the Handler, but make sure this |
|
470 |
// class calls into the Handler. |
|
471 |
||
472 |
public void stateChanged(ChangeEvent e) |
|
473 |
{ |
|
474 |
getHandler().stateChanged(e); |
|
475 |
} |
|
476 |
} |
|
477 |
||
478 |
/** |
|
479 |
* Returns a <code>PropertyChangeListener</code> that will be installed |
|
480 |
* on the horizontal <code>JScrollBar</code>. |
|
481 |
*/ |
|
482 |
private PropertyChangeListener createHSBPropertyChangeListener() { |
|
483 |
return getHandler(); |
|
484 |
} |
|
485 |
||
486 |
protected ChangeListener createHSBChangeListener() { |
|
487 |
return getHandler(); |
|
488 |
} |
|
489 |
||
490 |
||
491 |
/** |
|
492 |
* Vertical scrollbar listener. |
|
493 |
*/ |
|
494 |
public class VSBChangeListener implements ChangeListener |
|
495 |
{ |
|
496 |
||
497 |
// NOTE: This class exists only for backward compatability. All |
|
498 |
// its functionality has been moved into Handler. If you need to add |
|
499 |
// new functionality add it to the Handler, but make sure this |
|
500 |
// class calls into the Handler. |
|
501 |
||
502 |
public void stateChanged(ChangeEvent e) |
|
503 |
{ |
|
504 |
getHandler().stateChanged(e); |
|
505 |
} |
|
506 |
} |
|
507 |
||
508 |
||
509 |
/** |
|
510 |
* Returns a <code>PropertyChangeListener</code> that will be installed |
|
511 |
* on the vertical <code>JScrollBar</code>. |
|
512 |
*/ |
|
513 |
private PropertyChangeListener createVSBPropertyChangeListener() { |
|
514 |
return getHandler(); |
|
515 |
} |
|
516 |
||
517 |
protected ChangeListener createVSBChangeListener() { |
|
518 |
return getHandler(); |
|
519 |
} |
|
520 |
||
521 |
/** |
|
522 |
* MouseWheelHandler is an inner class which implements the |
|
523 |
* MouseWheelListener interface. MouseWheelHandler responds to |
|
524 |
* MouseWheelEvents by scrolling the JScrollPane appropriately. |
|
525 |
* If the scroll pane's |
|
526 |
* <code>isWheelScrollingEnabled</code> |
|
527 |
* method returns false, no scrolling occurs. |
|
528 |
* |
|
529 |
* @see javax.swing.JScrollPane#isWheelScrollingEnabled |
|
530 |
* @see #createMouseWheelListener |
|
531 |
* @see java.awt.event.MouseWheelListener |
|
532 |
* @see java.awt.event.MouseWheelEvent |
|
533 |
* @since 1.4 |
|
534 |
*/ |
|
535 |
protected class MouseWheelHandler implements MouseWheelListener { |
|
536 |
||
537 |
// NOTE: This class exists only for backward compatability. All |
|
538 |
// its functionality has been moved into Handler. If you need to add |
|
539 |
// new functionality add it to the Handler, but make sure this |
|
540 |
// class calls into the Handler. |
|
541 |
||
542 |
/** |
|
543 |
* Called when the mouse wheel is rotated while over a |
|
544 |
* JScrollPane. |
|
545 |
* |
|
546 |
* @param e MouseWheelEvent to be handled |
|
547 |
* @since 1.4 |
|
548 |
*/ |
|
549 |
public void mouseWheelMoved(MouseWheelEvent e) { |
|
550 |
getHandler().mouseWheelMoved(e); |
|
551 |
} |
|
552 |
} |
|
553 |
||
554 |
/** |
|
555 |
* Creates an instance of MouseWheelListener, which is added to the |
|
556 |
* JScrollPane by installUI(). The returned MouseWheelListener is used |
|
557 |
* to handle mouse wheel-driven scrolling. |
|
558 |
* |
|
559 |
* @return MouseWheelListener which implements wheel-driven scrolling |
|
560 |
* @see #installUI |
|
561 |
* @see MouseWheelHandler |
|
562 |
* @since 1.4 |
|
563 |
*/ |
|
564 |
protected MouseWheelListener createMouseWheelListener() { |
|
565 |
return getHandler(); |
|
566 |
} |
|
567 |
||
568 |
protected void updateScrollBarDisplayPolicy(PropertyChangeEvent e) { |
|
569 |
scrollpane.revalidate(); |
|
570 |
scrollpane.repaint(); |
|
571 |
} |
|
572 |
||
573 |
||
574 |
protected void updateViewport(PropertyChangeEvent e) |
|
575 |
{ |
|
576 |
JViewport oldViewport = (JViewport)(e.getOldValue()); |
|
577 |
JViewport newViewport = (JViewport)(e.getNewValue()); |
|
578 |
||
579 |
if (oldViewport != null) { |
|
580 |
oldViewport.removeChangeListener(viewportChangeListener); |
|
581 |
} |
|
582 |
||
583 |
if (newViewport != null) { |
|
584 |
Point p = newViewport.getViewPosition(); |
|
585 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
586 |
p.x = Math.max(p.x, 0); |
|
587 |
} else { |
|
588 |
int max = newViewport.getViewSize().width; |
|
589 |
int extent = newViewport.getExtentSize().width; |
|
590 |
if (extent > max) { |
|
591 |
p.x = max - extent; |
|
592 |
} else { |
|
593 |
p.x = Math.max(0, Math.min(max - extent, p.x)); |
|
594 |
} |
|
595 |
} |
|
596 |
p.y = Math.max(p.y, 0); |
|
597 |
newViewport.setViewPosition(p); |
|
598 |
newViewport.addChangeListener(viewportChangeListener); |
|
599 |
} |
|
600 |
} |
|
601 |
||
602 |
||
603 |
protected void updateRowHeader(PropertyChangeEvent e) |
|
604 |
{ |
|
605 |
JViewport newRowHead = (JViewport)(e.getNewValue()); |
|
606 |
if (newRowHead != null) { |
|
607 |
JViewport viewport = scrollpane.getViewport(); |
|
608 |
Point p = newRowHead.getViewPosition(); |
|
609 |
p.y = (viewport != null) ? viewport.getViewPosition().y : 0; |
|
610 |
newRowHead.setViewPosition(p); |
|
611 |
} |
|
612 |
} |
|
613 |
||
614 |
||
615 |
protected void updateColumnHeader(PropertyChangeEvent e) |
|
616 |
{ |
|
617 |
JViewport newColHead = (JViewport)(e.getNewValue()); |
|
618 |
if (newColHead != null) { |
|
619 |
JViewport viewport = scrollpane.getViewport(); |
|
620 |
Point p = newColHead.getViewPosition(); |
|
621 |
if (viewport == null) { |
|
622 |
p.x = 0; |
|
623 |
} else { |
|
624 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
625 |
p.x = viewport.getViewPosition().x; |
|
626 |
} else { |
|
627 |
p.x = Math.max(0, viewport.getViewPosition().x); |
|
628 |
} |
|
629 |
} |
|
630 |
newColHead.setViewPosition(p); |
|
631 |
scrollpane.add(newColHead, COLUMN_HEADER); |
|
632 |
} |
|
633 |
} |
|
634 |
||
635 |
private void updateHorizontalScrollBar(PropertyChangeEvent pce) { |
|
636 |
updateScrollBar(pce, hsbChangeListener, hsbPropertyChangeListener); |
|
637 |
} |
|
638 |
||
639 |
private void updateVerticalScrollBar(PropertyChangeEvent pce) { |
|
640 |
updateScrollBar(pce, vsbChangeListener, vsbPropertyChangeListener); |
|
641 |
} |
|
642 |
||
643 |
private void updateScrollBar(PropertyChangeEvent pce, ChangeListener cl, |
|
644 |
PropertyChangeListener pcl) { |
|
645 |
JScrollBar sb = (JScrollBar)pce.getOldValue(); |
|
646 |
if (sb != null) { |
|
647 |
if (cl != null) { |
|
648 |
sb.getModel().removeChangeListener(cl); |
|
649 |
} |
|
650 |
if (pcl != null) { |
|
651 |
sb.removePropertyChangeListener(pcl); |
|
652 |
} |
|
653 |
} |
|
654 |
sb = (JScrollBar)pce.getNewValue(); |
|
655 |
if (sb != null) { |
|
656 |
if (cl != null) { |
|
657 |
sb.getModel().addChangeListener(cl); |
|
658 |
} |
|
659 |
if (pcl != null) { |
|
660 |
sb.addPropertyChangeListener(pcl); |
|
661 |
} |
|
662 |
} |
|
663 |
} |
|
664 |
||
665 |
public class PropertyChangeHandler implements PropertyChangeListener |
|
666 |
{ |
|
667 |
||
668 |
// NOTE: This class exists only for backward compatability. All |
|
669 |
// its functionality has been moved into Handler. If you need to add |
|
670 |
// new functionality add it to the Handler, but make sure this |
|
671 |
// class calls into the Handler. |
|
672 |
||
673 |
public void propertyChange(PropertyChangeEvent e) |
|
674 |
{ |
|
675 |
getHandler().propertyChange(e); |
|
676 |
} |
|
677 |
} |
|
678 |
||
679 |
||
680 |
||
681 |
/** |
|
682 |
* Creates an instance of PropertyChangeListener that's added to |
|
683 |
* the JScrollPane by installUI(). Subclasses can override this method |
|
684 |
* to return a custom PropertyChangeListener, e.g. |
|
685 |
* <pre> |
|
686 |
* class MyScrollPaneUI extends BasicScrollPaneUI { |
|
687 |
* protected PropertyChangeListener <b>createPropertyChangeListener</b>() { |
|
688 |
* return new MyPropertyChangeListener(); |
|
689 |
* } |
|
690 |
* public class MyPropertyChangeListener extends PropertyChangeListener { |
|
691 |
* public void propertyChange(PropertyChangeEvent e) { |
|
692 |
* if (e.getPropertyName().equals("viewport")) { |
|
693 |
* // do some extra work when the viewport changes |
|
694 |
* } |
|
695 |
* super.propertyChange(e); |
|
696 |
* } |
|
697 |
* } |
|
698 |
* } |
|
699 |
* </pre> |
|
700 |
* |
|
701 |
* @see java.beans.PropertyChangeListener |
|
702 |
* @see #installUI |
|
703 |
*/ |
|
704 |
protected PropertyChangeListener createPropertyChangeListener() { |
|
705 |
return getHandler(); |
|
706 |
} |
|
707 |
||
708 |
||
709 |
private static class Actions extends UIAction { |
|
710 |
private static final String SCROLL_UP = "scrollUp"; |
|
711 |
private static final String SCROLL_DOWN = "scrollDown"; |
|
712 |
private static final String SCROLL_HOME = "scrollHome"; |
|
713 |
private static final String SCROLL_END = "scrollEnd"; |
|
714 |
private static final String UNIT_SCROLL_UP = "unitScrollUp"; |
|
715 |
private static final String UNIT_SCROLL_DOWN = "unitScrollDown"; |
|
716 |
private static final String SCROLL_LEFT = "scrollLeft"; |
|
717 |
private static final String SCROLL_RIGHT = "scrollRight"; |
|
718 |
private static final String UNIT_SCROLL_LEFT = "unitScrollLeft"; |
|
719 |
private static final String UNIT_SCROLL_RIGHT = "unitScrollRight"; |
|
720 |
||
721 |
||
722 |
Actions(String key) { |
|
723 |
super(key); |
|
724 |
} |
|
725 |
||
726 |
public void actionPerformed(ActionEvent e) { |
|
727 |
JScrollPane scrollPane = (JScrollPane)e.getSource(); |
|
728 |
boolean ltr = scrollPane.getComponentOrientation().isLeftToRight(); |
|
729 |
String key = getName(); |
|
730 |
||
731 |
if (key == SCROLL_UP) { |
|
732 |
scroll(scrollPane, SwingConstants.VERTICAL, -1, true); |
|
733 |
} |
|
734 |
else if (key == SCROLL_DOWN) { |
|
735 |
scroll(scrollPane, SwingConstants.VERTICAL, 1, true); |
|
736 |
} |
|
737 |
else if (key == SCROLL_HOME) { |
|
738 |
scrollHome(scrollPane); |
|
739 |
} |
|
740 |
else if (key == SCROLL_END) { |
|
741 |
scrollEnd(scrollPane); |
|
742 |
} |
|
743 |
else if (key == UNIT_SCROLL_UP) { |
|
744 |
scroll(scrollPane, SwingConstants.VERTICAL, -1, false); |
|
745 |
} |
|
746 |
else if (key == UNIT_SCROLL_DOWN) { |
|
747 |
scroll(scrollPane, SwingConstants.VERTICAL, 1, false); |
|
748 |
} |
|
749 |
else if (key == SCROLL_LEFT) { |
|
750 |
scroll(scrollPane, SwingConstants.HORIZONTAL, ltr ? -1 : 1, |
|
751 |
true); |
|
752 |
} |
|
753 |
else if (key == SCROLL_RIGHT) { |
|
754 |
scroll(scrollPane, SwingConstants.HORIZONTAL, ltr ? 1 : -1, |
|
755 |
true); |
|
756 |
} |
|
757 |
else if (key == UNIT_SCROLL_LEFT) { |
|
758 |
scroll(scrollPane, SwingConstants.HORIZONTAL, ltr ? -1 : 1, |
|
759 |
false); |
|
760 |
} |
|
761 |
else if (key == UNIT_SCROLL_RIGHT) { |
|
762 |
scroll(scrollPane, SwingConstants.HORIZONTAL, ltr ? 1 : -1, |
|
763 |
false); |
|
764 |
} |
|
765 |
} |
|
766 |
||
767 |
private void scrollEnd(JScrollPane scrollpane) { |
|
768 |
JViewport vp = scrollpane.getViewport(); |
|
769 |
Component view; |
|
770 |
if (vp != null && (view = vp.getView()) != null) { |
|
771 |
Rectangle visRect = vp.getViewRect(); |
|
772 |
Rectangle bounds = view.getBounds(); |
|
773 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
774 |
vp.setViewPosition(new Point(bounds.width - visRect.width, |
|
775 |
bounds.height - visRect.height)); |
|
776 |
} else { |
|
777 |
vp.setViewPosition(new Point(0, |
|
778 |
bounds.height - visRect.height)); |
|
779 |
} |
|
780 |
} |
|
781 |
} |
|
782 |
||
783 |
private void scrollHome(JScrollPane scrollpane) { |
|
784 |
JViewport vp = scrollpane.getViewport(); |
|
785 |
Component view; |
|
786 |
if (vp != null && (view = vp.getView()) != null) { |
|
787 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
788 |
vp.setViewPosition(new Point(0, 0)); |
|
789 |
} else { |
|
790 |
Rectangle visRect = vp.getViewRect(); |
|
791 |
Rectangle bounds = view.getBounds(); |
|
792 |
vp.setViewPosition(new Point(bounds.width - visRect.width, 0)); |
|
793 |
} |
|
794 |
} |
|
795 |
} |
|
796 |
||
797 |
private void scroll(JScrollPane scrollpane, int orientation, |
|
798 |
int direction, boolean block) { |
|
799 |
JViewport vp = scrollpane.getViewport(); |
|
800 |
Component view; |
|
801 |
if (vp != null && (view = vp.getView()) != null) { |
|
802 |
Rectangle visRect = vp.getViewRect(); |
|
803 |
Dimension vSize = view.getSize(); |
|
804 |
int amount; |
|
805 |
||
806 |
if (view instanceof Scrollable) { |
|
807 |
if (block) { |
|
808 |
amount = ((Scrollable)view).getScrollableBlockIncrement |
|
809 |
(visRect, orientation, direction); |
|
810 |
} |
|
811 |
else { |
|
812 |
amount = ((Scrollable)view).getScrollableUnitIncrement |
|
813 |
(visRect, orientation, direction); |
|
814 |
} |
|
815 |
} |
|
816 |
else { |
|
817 |
if (block) { |
|
818 |
if (orientation == SwingConstants.VERTICAL) { |
|
819 |
amount = visRect.height; |
|
820 |
} |
|
821 |
else { |
|
822 |
amount = visRect.width; |
|
823 |
} |
|
824 |
} |
|
825 |
else { |
|
826 |
amount = 10; |
|
827 |
} |
|
828 |
} |
|
829 |
if (orientation == SwingConstants.VERTICAL) { |
|
830 |
visRect.y += (amount * direction); |
|
831 |
if ((visRect.y + visRect.height) > vSize.height) { |
|
832 |
visRect.y = Math.max(0, vSize.height - visRect.height); |
|
833 |
} |
|
834 |
else if (visRect.y < 0) { |
|
835 |
visRect.y = 0; |
|
836 |
} |
|
837 |
} |
|
838 |
else { |
|
839 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
840 |
visRect.x += (amount * direction); |
|
841 |
if ((visRect.x + visRect.width) > vSize.width) { |
|
842 |
visRect.x = Math.max(0, vSize.width - visRect.width); |
|
843 |
} else if (visRect.x < 0) { |
|
844 |
visRect.x = 0; |
|
845 |
} |
|
846 |
} else { |
|
847 |
visRect.x -= (amount * direction); |
|
848 |
if (visRect.width > vSize.width) { |
|
849 |
visRect.x = vSize.width - visRect.width; |
|
850 |
} else { |
|
851 |
visRect.x = Math.max(0, Math.min(vSize.width - visRect.width, visRect.x)); |
|
852 |
} |
|
853 |
} |
|
854 |
} |
|
855 |
vp.setViewPosition(visRect.getLocation()); |
|
856 |
} |
|
857 |
} |
|
858 |
} |
|
859 |
||
860 |
||
861 |
class Handler implements ChangeListener, PropertyChangeListener, MouseWheelListener { |
|
862 |
// |
|
863 |
// MouseWheelListener |
|
864 |
// |
|
865 |
public void mouseWheelMoved(MouseWheelEvent e) { |
|
866 |
if (scrollpane.isWheelScrollingEnabled() && |
|
867 |
e.getWheelRotation() != 0) { |
|
868 |
JScrollBar toScroll = scrollpane.getVerticalScrollBar(); |
|
869 |
int direction = e.getWheelRotation() < 0 ? -1 : 1; |
|
870 |
int orientation = SwingConstants.VERTICAL; |
|
871 |
||
872 |
// find which scrollbar to scroll, or return if none |
|
873 |
if (toScroll == null || !toScroll.isVisible()) { |
|
874 |
toScroll = scrollpane.getHorizontalScrollBar(); |
|
875 |
if (toScroll == null || !toScroll.isVisible()) { |
|
876 |
return; |
|
877 |
} |
|
878 |
orientation = SwingConstants.HORIZONTAL; |
|
879 |
} |
|
880 |
||
5277
03170721df2e
6920842: Wheel events do not bubbling to the browser if they was not treated in applet.
uta
parents:
3350
diff
changeset
|
881 |
e.consume(); |
03170721df2e
6920842: Wheel events do not bubbling to the browser if they was not treated in applet.
uta
parents:
3350
diff
changeset
|
882 |
|
2 | 883 |
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) { |
884 |
JViewport vp = scrollpane.getViewport(); |
|
885 |
if (vp == null) { return; } |
|
886 |
Component comp = vp.getView(); |
|
887 |
int units = Math.abs(e.getUnitsToScroll()); |
|
888 |
||
889 |
// When the scrolling speed is set to maximum, it's possible |
|
890 |
// for a single wheel click to scroll by more units than |
|
891 |
// will fit in the visible area. This makes it |
|
892 |
// hard/impossible to get to certain parts of the scrolling |
|
893 |
// Component with the wheel. To make for more accurate |
|
894 |
// low-speed scrolling, we limit scrolling to the block |
|
895 |
// increment if the wheel was only rotated one click. |
|
896 |
boolean limitScroll = Math.abs(e.getWheelRotation()) == 1; |
|
897 |
||
898 |
// Check if we should use the visibleRect trick |
|
899 |
Object fastWheelScroll = toScroll.getClientProperty( |
|
900 |
"JScrollBar.fastWheelScrolling"); |
|
901 |
if (Boolean.TRUE == fastWheelScroll && |
|
902 |
comp instanceof Scrollable) { |
|
903 |
// 5078454: Under maximum acceleration, we may scroll |
|
904 |
// by many 100s of units in ~1 second. |
|
905 |
// |
|
906 |
// BasicScrollBarUI.scrollByUnits() can bog down the EDT |
|
907 |
// with repaints in this situation. However, the |
|
908 |
// Scrollable interface allows us to pass in an |
|
909 |
// arbitrary visibleRect. This allows us to accurately |
|
910 |
// calculate the total scroll amount, and then update |
|
911 |
// the GUI once. This technique provides much faster |
|
912 |
// accelerated wheel scrolling. |
|
913 |
Scrollable scrollComp = (Scrollable) comp; |
|
914 |
Rectangle viewRect = vp.getViewRect(); |
|
915 |
int startingX = viewRect.x; |
|
916 |
boolean leftToRight = |
|
917 |
comp.getComponentOrientation().isLeftToRight(); |
|
918 |
int scrollMin = toScroll.getMinimum(); |
|
919 |
int scrollMax = toScroll.getMaximum() - |
|
920 |
toScroll.getModel().getExtent(); |
|
921 |
||
922 |
if (limitScroll) { |
|
923 |
int blockIncr = |
|
924 |
scrollComp.getScrollableBlockIncrement(viewRect, |
|
925 |
orientation, |
|
926 |
direction); |
|
927 |
if (direction < 0) { |
|
928 |
scrollMin = Math.max(scrollMin, |
|
929 |
toScroll.getValue() - blockIncr); |
|
930 |
} |
|
931 |
else { |
|
932 |
scrollMax = Math.min(scrollMax, |
|
933 |
toScroll.getValue() + blockIncr); |
|
934 |
} |
|
935 |
} |
|
936 |
||
937 |
for (int i = 0; i < units; i++) { |
|
938 |
int unitIncr = |
|
939 |
scrollComp.getScrollableUnitIncrement(viewRect, |
|
940 |
orientation, direction); |
|
941 |
// Modify the visible rect for the next unit, and |
|
942 |
// check to see if we're at the end already. |
|
943 |
if (orientation == SwingConstants.VERTICAL) { |
|
944 |
if (direction < 0) { |
|
945 |
viewRect.y -= unitIncr; |
|
946 |
if (viewRect.y <= scrollMin) { |
|
947 |
viewRect.y = scrollMin; |
|
948 |
break; |
|
949 |
} |
|
950 |
} |
|
951 |
else { // (direction > 0 |
|
952 |
viewRect.y += unitIncr; |
|
953 |
if (viewRect.y >= scrollMax) { |
|
954 |
viewRect.y = scrollMax; |
|
955 |
break; |
|
956 |
} |
|
957 |
} |
|
958 |
} |
|
959 |
else { |
|
960 |
// Scroll left |
|
961 |
if ((leftToRight && direction < 0) || |
|
962 |
(!leftToRight && direction > 0)) { |
|
963 |
viewRect.x -= unitIncr; |
|
964 |
if (leftToRight) { |
|
965 |
if (viewRect.x < scrollMin) { |
|
966 |
viewRect.x = scrollMin; |
|
967 |
break; |
|
968 |
} |
|
969 |
} |
|
970 |
} |
|
971 |
// Scroll right |
|
972 |
else if ((leftToRight && direction > 0) || |
|
973 |
(!leftToRight && direction < 0)) { |
|
974 |
viewRect.x += unitIncr; |
|
975 |
if (leftToRight) { |
|
976 |
if (viewRect.x > scrollMax) { |
|
977 |
viewRect.x = scrollMax; |
|
978 |
break; |
|
979 |
} |
|
980 |
} |
|
981 |
} |
|
982 |
else { |
|
983 |
assert false : "Non-sensical ComponentOrientation / scroll direction"; |
|
984 |
} |
|
985 |
} |
|
986 |
} |
|
987 |
// Set the final view position on the ScrollBar |
|
988 |
if (orientation == SwingConstants.VERTICAL) { |
|
989 |
toScroll.setValue(viewRect.y); |
|
990 |
} |
|
991 |
else { |
|
992 |
if (leftToRight) { |
|
993 |
toScroll.setValue(viewRect.x); |
|
994 |
} |
|
995 |
else { |
|
996 |
// rightToLeft scrollbars are oriented with |
|
997 |
// minValue on the right and maxValue on the |
|
998 |
// left. |
|
999 |
int newPos = toScroll.getValue() - |
|
1000 |
(viewRect.x - startingX); |
|
1001 |
if (newPos < scrollMin) { |
|
1002 |
newPos = scrollMin; |
|
1003 |
} |
|
1004 |
else if (newPos > scrollMax) { |
|
1005 |
newPos = scrollMax; |
|
1006 |
} |
|
1007 |
toScroll.setValue(newPos); |
|
1008 |
} |
|
1009 |
} |
|
1010 |
} |
|
1011 |
else { |
|
1012 |
// Viewport's view is not a Scrollable, or fast wheel |
|
1013 |
// scrolling is not enabled. |
|
1014 |
BasicScrollBarUI.scrollByUnits(toScroll, direction, |
|
1015 |
units, limitScroll); |
|
1016 |
} |
|
1017 |
} |
|
1018 |
else if (e.getScrollType() == |
|
1019 |
MouseWheelEvent.WHEEL_BLOCK_SCROLL) { |
|
1020 |
BasicScrollBarUI.scrollByBlock(toScroll, direction); |
|
1021 |
} |
|
1022 |
} |
|
1023 |
} |
|
1024 |
||
1025 |
// |
|
1026 |
// ChangeListener: This is added to the vieport, and hsb/vsb models. |
|
1027 |
// |
|
1028 |
public void stateChanged(ChangeEvent e) { |
|
1029 |
JViewport viewport = scrollpane.getViewport(); |
|
1030 |
||
1031 |
if (viewport != null) { |
|
1032 |
if (e.getSource() == viewport) { |
|
3350
100ac73bfe6e
6864297: Right-to-left oriented JScrollPane is aligned to the wrong direction while resizing the container
malenkov
parents:
2
diff
changeset
|
1033 |
syncScrollPaneWithViewport(); |
2 | 1034 |
} |
1035 |
else { |
|
1036 |
JScrollBar hsb = scrollpane.getHorizontalScrollBar(); |
|
1037 |
if (hsb != null && e.getSource() == hsb.getModel()) { |
|
1038 |
hsbStateChanged(viewport, e); |
|
1039 |
} |
|
1040 |
else { |
|
1041 |
JScrollBar vsb = scrollpane.getVerticalScrollBar(); |
|
1042 |
if (vsb != null && e.getSource() == vsb.getModel()) { |
|
1043 |
vsbStateChanged(viewport, e); |
|
1044 |
} |
|
1045 |
} |
|
1046 |
} |
|
1047 |
} |
|
1048 |
} |
|
1049 |
||
1050 |
private void vsbStateChanged(JViewport viewport, ChangeEvent e) { |
|
1051 |
BoundedRangeModel model = (BoundedRangeModel)(e.getSource()); |
|
1052 |
Point p = viewport.getViewPosition(); |
|
1053 |
p.y = model.getValue(); |
|
1054 |
viewport.setViewPosition(p); |
|
1055 |
} |
|
1056 |
||
1057 |
private void hsbStateChanged(JViewport viewport, ChangeEvent e) { |
|
1058 |
BoundedRangeModel model = (BoundedRangeModel)(e.getSource()); |
|
1059 |
Point p = viewport.getViewPosition(); |
|
1060 |
int value = model.getValue(); |
|
1061 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
1062 |
p.x = value; |
|
1063 |
} else { |
|
1064 |
int max = viewport.getViewSize().width; |
|
1065 |
int extent = viewport.getExtentSize().width; |
|
1066 |
int oldX = p.x; |
|
1067 |
||
1068 |
/* Set new X coordinate based on "value". |
|
1069 |
*/ |
|
1070 |
p.x = max - extent - value; |
|
1071 |
||
1072 |
/* If setValue() was called before "extent" was fixed, |
|
1073 |
* turn setValueCalled flag on. |
|
1074 |
*/ |
|
1075 |
if ((extent == 0) && (value != 0) && (oldX == max)) { |
|
1076 |
setValueCalled = true; |
|
1077 |
} else { |
|
1078 |
/* When a pane without a horizontal scroll bar was |
|
1079 |
* reduced and the bar appeared, the viewport should |
|
1080 |
* show the right side of the view. |
|
1081 |
*/ |
|
1082 |
if ((extent != 0) && (oldX < 0) && (p.x == 0)) { |
|
1083 |
p.x += value; |
|
1084 |
} |
|
1085 |
} |
|
1086 |
} |
|
1087 |
viewport.setViewPosition(p); |
|
1088 |
} |
|
1089 |
||
1090 |
// |
|
1091 |
// PropertyChangeListener: This is installed on both the JScrollPane |
|
1092 |
// and the horizontal/vertical scrollbars. |
|
1093 |
// |
|
1094 |
||
1095 |
// Listens for changes in the model property and reinstalls the |
|
1096 |
// horizontal/vertical PropertyChangeListeners. |
|
1097 |
public void propertyChange(PropertyChangeEvent e) { |
|
1098 |
if (e.getSource() == scrollpane) { |
|
1099 |
scrollPanePropertyChange(e); |
|
1100 |
} |
|
1101 |
else { |
|
1102 |
sbPropertyChange(e); |
|
1103 |
} |
|
1104 |
} |
|
1105 |
||
1106 |
private void scrollPanePropertyChange(PropertyChangeEvent e) { |
|
1107 |
String propertyName = e.getPropertyName(); |
|
1108 |
||
1109 |
if (propertyName == "verticalScrollBarDisplayPolicy") { |
|
1110 |
updateScrollBarDisplayPolicy(e); |
|
1111 |
} |
|
1112 |
else if (propertyName == "horizontalScrollBarDisplayPolicy") { |
|
1113 |
updateScrollBarDisplayPolicy(e); |
|
1114 |
} |
|
1115 |
else if (propertyName == "viewport") { |
|
1116 |
updateViewport(e); |
|
1117 |
} |
|
1118 |
else if (propertyName == "rowHeader") { |
|
1119 |
updateRowHeader(e); |
|
1120 |
} |
|
1121 |
else if (propertyName == "columnHeader") { |
|
1122 |
updateColumnHeader(e); |
|
1123 |
} |
|
1124 |
else if (propertyName == "verticalScrollBar") { |
|
1125 |
updateVerticalScrollBar(e); |
|
1126 |
} |
|
1127 |
else if (propertyName == "horizontalScrollBar") { |
|
1128 |
updateHorizontalScrollBar(e); |
|
1129 |
} |
|
1130 |
else if (propertyName == "componentOrientation") { |
|
1131 |
scrollpane.revalidate(); |
|
1132 |
scrollpane.repaint(); |
|
1133 |
} |
|
1134 |
} |
|
1135 |
||
1136 |
// PropertyChangeListener for the horizontal and vertical scrollbars. |
|
1137 |
private void sbPropertyChange(PropertyChangeEvent e) { |
|
1138 |
String propertyName = e.getPropertyName(); |
|
1139 |
Object source = e.getSource(); |
|
1140 |
||
1141 |
if ("model" == propertyName) { |
|
1142 |
JScrollBar sb = scrollpane.getVerticalScrollBar(); |
|
1143 |
BoundedRangeModel oldModel = (BoundedRangeModel)e. |
|
1144 |
getOldValue(); |
|
1145 |
ChangeListener cl = null; |
|
1146 |
||
1147 |
if (source == sb) { |
|
1148 |
cl = vsbChangeListener; |
|
1149 |
} |
|
1150 |
else if (source == scrollpane.getHorizontalScrollBar()) { |
|
1151 |
sb = scrollpane.getHorizontalScrollBar(); |
|
1152 |
cl = hsbChangeListener; |
|
1153 |
} |
|
1154 |
if (cl != null) { |
|
1155 |
if (oldModel != null) { |
|
1156 |
oldModel.removeChangeListener(cl); |
|
1157 |
} |
|
1158 |
if (sb.getModel() != null) { |
|
1159 |
sb.getModel().addChangeListener(cl); |
|
1160 |
} |
|
1161 |
} |
|
1162 |
} |
|
1163 |
else if ("componentOrientation" == propertyName) { |
|
1164 |
if (source == scrollpane.getHorizontalScrollBar()) { |
|
1165 |
JScrollBar hsb = scrollpane.getHorizontalScrollBar(); |
|
1166 |
JViewport viewport = scrollpane.getViewport(); |
|
1167 |
Point p = viewport.getViewPosition(); |
|
1168 |
if (scrollpane.getComponentOrientation().isLeftToRight()) { |
|
1169 |
p.x = hsb.getValue(); |
|
1170 |
} else { |
|
1171 |
p.x = viewport.getViewSize().width - viewport.getExtentSize().width - hsb.getValue(); |
|
1172 |
} |
|
1173 |
viewport.setViewPosition(p); |
|
1174 |
} |
|
1175 |
} |
|
1176 |
} |
|
1177 |
} |
|
1178 |
} |