author | weijun |
Thu, 11 Dec 2014 15:19:12 +0800 | |
changeset 28228 | be83f404724d |
parent 25859 | 3317bb8137f4 |
child 47020 | 2c55106dc37b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
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* 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 |
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* 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.SwingUtilities2; |
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import java.awt.*; |
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import java.beans.PropertyChangeEvent; |
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import java.beans.PropertyChangeListener; |
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import javax.swing.*; |
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import javax.swing.BorderFactory; |
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import javax.swing.border.Border; |
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import javax.swing.plaf.ToolTipUI; |
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import javax.swing.plaf.ComponentUI; |
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import javax.swing.plaf.UIResource; |
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import javax.swing.text.View; |
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/** |
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* Standard tool tip L&F. |
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* |
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* @author Dave Moore |
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*/ |
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public class BasicToolTipUI extends ToolTipUI |
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{ |
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static BasicToolTipUI sharedInstance = new BasicToolTipUI(); |
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/** |
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* Global <code>PropertyChangeListener</code> that |
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* <code>createPropertyChangeListener</code> returns. |
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*/ |
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private static PropertyChangeListener sharedPropertyChangedListener; |
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private PropertyChangeListener propertyChangeListener; |
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/** |
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* Returns the instance of {@code BasicToolTipUI}. |
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* |
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* @param c a component |
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* @return the instance of {@code BasicToolTipUI} |
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*/ |
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public static ComponentUI createUI(JComponent c) { |
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return sharedInstance; |
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} |
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/** |
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* Constructs a new instance of {@code BasicToolTipUI}. |
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*/ |
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public BasicToolTipUI() { |
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super(); |
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} |
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public void installUI(JComponent c) { |
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installDefaults(c); |
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installComponents(c); |
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installListeners(c); |
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} |
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public void uninstallUI(JComponent c) { |
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// REMIND: this is NOT getting called |
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uninstallDefaults(c); |
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uninstallComponents(c); |
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uninstallListeners(c); |
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} |
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/** |
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* Installs default properties. |
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* |
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* @param c a component |
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*/ |
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protected void installDefaults(JComponent c){ |
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LookAndFeel.installColorsAndFont(c, "ToolTip.background", |
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"ToolTip.foreground", |
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"ToolTip.font"); |
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LookAndFeel.installProperty(c, "opaque", Boolean.TRUE); |
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componentChanged(c); |
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} |
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/** |
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* Uninstalls default properties. |
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* |
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* @param c a component |
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*/ |
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protected void uninstallDefaults(JComponent c){ |
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LookAndFeel.uninstallBorder(c); |
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} |
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/* Unfortunately this has to remain private until we can make API additions. |
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*/ |
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private void installComponents(JComponent c){ |
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BasicHTML.updateRenderer(c, ((JToolTip) c).getTipText()); |
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} |
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/* Unfortunately this has to remain private until we can make API additions. |
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*/ |
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private void uninstallComponents(JComponent c){ |
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BasicHTML.updateRenderer(c, ""); |
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} |
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/** |
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* Registers listeners. |
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* |
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* @param c a component |
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*/ |
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protected void installListeners(JComponent c) { |
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propertyChangeListener = createPropertyChangeListener(c); |
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c.addPropertyChangeListener(propertyChangeListener); |
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} |
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/** |
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* Unregisters listeners. |
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* |
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* @param c a component |
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*/ |
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protected void uninstallListeners(JComponent c) { |
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c.removePropertyChangeListener(propertyChangeListener); |
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propertyChangeListener = null; |
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} |
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/* Unfortunately this has to remain private until we can make API additions. |
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*/ |
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private PropertyChangeListener createPropertyChangeListener(JComponent c) { |
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if (sharedPropertyChangedListener == null) { |
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sharedPropertyChangedListener = new PropertyChangeHandler(); |
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} |
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return sharedPropertyChangedListener; |
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} |
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public void paint(Graphics g, JComponent c) { |
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Font font = c.getFont(); |
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FontMetrics metrics = SwingUtilities2.getFontMetrics(c, g, font); |
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Dimension size = c.getSize(); |
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g.setColor(c.getForeground()); |
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// fix for bug 4153892 |
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String tipText = ((JToolTip)c).getTipText(); |
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if (tipText == null) { |
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tipText = ""; |
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} |
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Insets insets = c.getInsets(); |
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Rectangle paintTextR = new Rectangle( |
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insets.left + 3, |
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insets.top, |
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size.width - (insets.left + insets.right) - 6, |
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size.height - (insets.top + insets.bottom)); |
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View v = (View) c.getClientProperty(BasicHTML.propertyKey); |
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if (v != null) { |
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v.paint(g, paintTextR); |
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} else { |
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g.setFont(font); |
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SwingUtilities2.drawString(c, g, tipText, paintTextR.x, |
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paintTextR.y + metrics.getAscent()); |
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} |
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} |
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public Dimension getPreferredSize(JComponent c) { |
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Font font = c.getFont(); |
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FontMetrics fm = c.getFontMetrics(font); |
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Insets insets = c.getInsets(); |
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Dimension prefSize = new Dimension(insets.left+insets.right, |
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insets.top+insets.bottom); |
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String text = ((JToolTip)c).getTipText(); |
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if ((text == null) || text.equals("")) { |
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text = ""; |
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} |
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else { |
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View v = (c != null) ? (View) c.getClientProperty("html") : null; |
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if (v != null) { |
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prefSize.width += (int) v.getPreferredSpan(View.X_AXIS) + 6; |
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prefSize.height += (int) v.getPreferredSpan(View.Y_AXIS); |
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} else { |
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prefSize.width += SwingUtilities2.stringWidth(c,fm,text) + 6; |
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prefSize.height += fm.getHeight(); |
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} |
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} |
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return prefSize; |
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} |
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public Dimension getMinimumSize(JComponent c) { |
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Dimension d = getPreferredSize(c); |
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View v = (View) c.getClientProperty(BasicHTML.propertyKey); |
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if (v != null) { |
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d.width -= v.getPreferredSpan(View.X_AXIS) - v.getMinimumSpan(View.X_AXIS); |
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} |
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return d; |
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} |
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public Dimension getMaximumSize(JComponent c) { |
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Dimension d = getPreferredSize(c); |
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View v = (View) c.getClientProperty(BasicHTML.propertyKey); |
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if (v != null) { |
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d.width += v.getMaximumSpan(View.X_AXIS) - v.getPreferredSpan(View.X_AXIS); |
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} |
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return d; |
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} |
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/** |
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* Invoked when the <code>JCompoment</code> associated with the |
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* <code>JToolTip</code> has changed, or at initialization time. This |
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* should update any state dependant upon the <code>JComponent</code>. |
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* |
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* @param c the JToolTip the JComponent has changed on. |
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*/ |
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private void componentChanged(JComponent c) { |
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JComponent comp = ((JToolTip)c).getComponent(); |
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if (comp != null && !(comp.isEnabled())) { |
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// For better backward compatibility, only install inactive |
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// properties if they are defined. |
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if (UIManager.getBorder("ToolTip.borderInactive") != null) { |
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LookAndFeel.installBorder(c, "ToolTip.borderInactive"); |
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} |
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else { |
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LookAndFeel.installBorder(c, "ToolTip.border"); |
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} |
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if (UIManager.getColor("ToolTip.backgroundInactive") != null) { |
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LookAndFeel.installColors(c,"ToolTip.backgroundInactive", |
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"ToolTip.foregroundInactive"); |
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} |
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else { |
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LookAndFeel.installColors(c,"ToolTip.background", |
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"ToolTip.foreground"); |
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} |
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} else { |
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LookAndFeel.installBorder(c, "ToolTip.border"); |
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LookAndFeel.installColors(c, "ToolTip.background", |
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"ToolTip.foreground"); |
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} |
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} |
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private static class PropertyChangeHandler implements |
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PropertyChangeListener { |
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public void propertyChange(PropertyChangeEvent e) { |
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String name = e.getPropertyName(); |
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if (name.equals("tiptext") || "font".equals(name) || |
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"foreground".equals(name)) { |
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// remove the old html view client property if one |
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// existed, and install a new one if the text installed |
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// into the JLabel is html source. |
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JToolTip tip = ((JToolTip) e.getSource()); |
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String text = tip.getTipText(); |
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BasicHTML.updateRenderer(tip, text); |
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} |
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else if ("component".equals(name)) { |
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JToolTip tip = ((JToolTip) e.getSource()); |
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if (tip.getUI() instanceof BasicToolTipUI) { |
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((BasicToolTipUI)tip.getUI()).componentChanged(tip); |
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} |
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} |
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} |
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} |
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} |