- /*
- * @(#)BasicToolTipUI.java 1.37 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package javax.swing.plaf.basic;
-
- import java.awt.*;
- import java.beans.PropertyChangeEvent;
- import java.beans.PropertyChangeListener;
-
- import javax.swing.*;
- import javax.swing.BorderFactory;
- import javax.swing.border.Border;
- import javax.swing.plaf.ToolTipUI;
- import javax.swing.plaf.ComponentUI;
- import javax.swing.plaf.UIResource;
- import javax.swing.text.View;
-
-
- /**
- * Standard tool tip L&F.
- * <p>
- *
- * @version 1.37 01/23/03
- * @author Dave Moore
- */
- public class BasicToolTipUI extends ToolTipUI
- {
- static BasicToolTipUI sharedInstance = new BasicToolTipUI();
- /**
- * Global <code>PropertyChangeListener</code> that
- * <code>createPropertyChangeListener</code> returns.
- */
- private static PropertyChangeListener sharedPropertyChangedListener;
-
- private PropertyChangeListener propertyChangeListener;
-
- public static ComponentUI createUI(JComponent c) {
- return sharedInstance;
- }
-
- public BasicToolTipUI() {
- super();
- }
-
- public void installUI(JComponent c) {
- installDefaults(c);
- installComponents(c);
- installListeners(c);
- }
-
- public void uninstallUI(JComponent c) {
- // REMIND: this is NOT getting called
- uninstallDefaults(c);
- uninstallComponents(c);
- uninstallListeners(c);
- }
-
- protected void installDefaults(JComponent c){
- LookAndFeel.installColorsAndFont(c, "ToolTip.background",
- "ToolTip.foreground",
- "ToolTip.font");
- componentChanged(c);
- }
-
- protected void uninstallDefaults(JComponent c){
- LookAndFeel.uninstallBorder(c);
- }
-
- /* Unfortunately this has to remain private until we can make API additions.
- */
- private void installComponents(JComponent c){
- BasicHTML.updateRenderer(c, ((JToolTip)c).getTipText());
- }
-
- /* Unfortunately this has to remain private until we can make API additions.
- */
- private void uninstallComponents(JComponent c){
- BasicHTML.updateRenderer(c, "");
- }
-
- protected void installListeners(JComponent c) {
- propertyChangeListener = createPropertyChangeListener(c);
-
- c.addPropertyChangeListener(propertyChangeListener);
- }
-
- protected void uninstallListeners(JComponent c) {
- c.removePropertyChangeListener(propertyChangeListener);
-
- propertyChangeListener = null;
- }
-
- /* Unfortunately this has to remain private until we can make API additions.
- */
- private PropertyChangeListener createPropertyChangeListener(JComponent c) {
- if (sharedPropertyChangedListener == null) {
- sharedPropertyChangedListener = new PropertyChangeHandler();
- }
- return sharedPropertyChangedListener;
- }
-
- public void paint(Graphics g, JComponent c) {
- Font font = c.getFont();
- FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(font);
- Dimension size = c.getSize();
- if (c.isOpaque()) {
- g.setColor(c.getBackground());
- g.fillRect(0, 0, size.width, size.height);
- }
- g.setColor(c.getForeground());
- g.setFont(font);
- // fix for bug 4153892
- String tipText = ((JToolTip)c).getTipText();
- if (tipText == null) {
- tipText = "";
- }
-
- Insets insets = c.getInsets();
- Rectangle paintTextR = new Rectangle(
- insets.left,
- insets.top,
- size.width - (insets.left + insets.right),
- size.height - (insets.top + insets.bottom));
- View v = (View) c.getClientProperty(BasicHTML.propertyKey);
- if (v != null) {
- v.paint(g, paintTextR);
- } else {
- g.drawString(tipText, paintTextR.x + 3,
- paintTextR.y + metrics.getAscent());
- }
- }
-
- public Dimension getPreferredSize(JComponent c) {
- Font font = c.getFont();
- FontMetrics fm = Toolkit.getDefaultToolkit().getFontMetrics(font);
- Insets insets = c.getInsets();
-
- Dimension prefSize = new Dimension(insets.left+insets.right,
- insets.top+insets.bottom);
- String text = ((JToolTip)c).getTipText();
-
- if ((text == null) || text.equals("")) {
- text = "";
- }
- else {
- View v = (c != null) ? (View) c.getClientProperty("html") : null;
- if (v != null) {
- prefSize.width += (int) v.getPreferredSpan(View.X_AXIS);
- prefSize.height += (int) v.getPreferredSpan(View.Y_AXIS);
- } else {
- prefSize.width += SwingUtilities.computeStringWidth(fm,text) + 6;
- prefSize.height += fm.getHeight();
- }
- }
- return prefSize;
- }
-
- public Dimension getMinimumSize(JComponent c) {
- Dimension d = getPreferredSize(c);
- View v = (View) c.getClientProperty(BasicHTML.propertyKey);
- if (v != null) {
- d.width -= v.getPreferredSpan(View.X_AXIS) - v.getMinimumSpan(View.X_AXIS);
- }
- return d;
- }
-
- public Dimension getMaximumSize(JComponent c) {
- Dimension d = getPreferredSize(c);
- View v = (View) c.getClientProperty(BasicHTML.propertyKey);
- if (v != null) {
- d.width += v.getMaximumSpan(View.X_AXIS) - v.getPreferredSpan(View.X_AXIS);
- }
- return d;
- }
-
- /**
- * Invoked when the <code>JCompoment</code> associated with the
- * <code>JToolTip</code> has changed, or at initialization time. This
- * should update any state dependant upon the <code>JComponent</code>.
- *
- * @param c the JToolTip the JComponent has changed on.
- */
- private void componentChanged(JComponent c) {
- JComponent comp = ((JToolTip)c).getComponent();
-
- if (comp != null && !(comp.isEnabled())) {
- // For better backward compatability, only install inactive
- // properties if they are defined.
- if (UIManager.getBorder("ToolTip.borderInactive") != null) {
- LookAndFeel.installBorder(c, "ToolTip.borderInactive");
- }
- else {
- LookAndFeel.installBorder(c, "ToolTip.border");
- }
- if (UIManager.getColor("ToolTip.backgroundInactive") != null) {
- LookAndFeel.installColors(c,"ToolTip.backgroundInactive",
- "ToolTip.foregroundInactive");
- }
- else {
- LookAndFeel.installColors(c,"ToolTip.background",
- "ToolTip.foreground");
- }
- } else {
- LookAndFeel.installBorder(c, "ToolTip.border");
- LookAndFeel.installColors(c, "ToolTip.background",
- "ToolTip.foreground");
- }
- }
-
-
- private static class PropertyChangeHandler implements
- PropertyChangeListener {
- public void propertyChange(PropertyChangeEvent e) {
- String name = e.getPropertyName();
- if (name.equals("tiptext") || "font".equals(name) ||
- "foreground".equals(name)) {
- // remove the old html view client property if one
- // existed, and install a new one if the text installed
- // into the JLabel is html source.
- JToolTip tip = ((JToolTip) e.getSource());
- String text = tip.getTipText();
- BasicHTML.updateRenderer(tip, text);
- }
- else if ("component".equals(name)) {
- JToolTip tip = ((JToolTip) e.getSource());
-
- if (tip.getUI() instanceof BasicToolTipUI) {
- ((BasicToolTipUI)tip.getUI()).componentChanged(tip);
- }
- }
- }
- }
- }