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src/java.desktop/share/classes/javax/swing/plaf/metal/MetalToolBarUI.java

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  96         }
  97         components.add(new WeakReference<JComponent>(c));
  98     }
  99 
 100     /**
 101      * Unregisters the specified component.
 102      */
 103     static synchronized void unregister(JComponent c) {
 104         for (int counter = components.size() - 1; counter >= 0; counter--) {
 105             // Search for the component, removing any flushed references
 106             // along the way.
 107             JComponent target = components.get(counter).get();
 108 
 109             if (target == c || target == null) {
 110                 components.remove(counter);
 111             }
 112         }
 113     }
 114 
 115     /**
 116      * Finds a previously registered component of class <code>target</code>
 117      * that shares the JRootPane ancestor of <code>from</code>.
 118      */
 119     static synchronized Object findRegisteredComponentOfType(JComponent from,
 120                                                              Class<?> target) {
 121         JRootPane rp = SwingUtilities.getRootPane(from);
 122         if (rp != null) {
 123             for (int counter = components.size() - 1; counter >= 0; counter--){
 124                 Object component = ((WeakReference)components.get(counter)).
 125                                    get();
 126 
 127                 if (component == null) {
 128                     // WeakReference has gone away, remove the WeakReference
 129                     components.remove(counter);
 130                 }
 131                 else if (target.isInstance(component) && SwingUtilities.
 132                          getRootPane((Component)component) == rp) {
 133                     return component;
 134                 }
 135             }
 136         }
 137         return null;


 236             JToggleButton b = (JToggleButton)c;
 237             Border border = b.getBorder();
 238             super.setBorderToNonRollover(c);
 239             if (border instanceof UIResource) {
 240                 if (nonRolloverBorder == null) {
 241                     nonRolloverBorder = createNonRolloverToggleBorder();
 242                 }
 243                 b.setBorder(nonRolloverBorder);
 244             }
 245         } else {
 246             super.setBorderToNonRollover(c);
 247         }
 248     }
 249 
 250 
 251     /**
 252      * Creates a container listener that will be added to the JToolBar.
 253      * If this method returns null then it will not be added to the
 254      * toolbar.
 255      *
 256      * @return an instance of a <code>ContainerListener</code> or null
 257      */
 258     protected ContainerListener createContainerListener() {
 259         return null;
 260     }
 261 
 262     /**
 263      * Creates a property change listener that will be added to the JToolBar.
 264      * If this method returns null then it will not be added to the
 265      * toolbar.
 266      *
 267      * @return an instance of a <code>PropertyChangeListener</code> or null
 268      */
 269     protected PropertyChangeListener createRolloverListener() {
 270         return null;
 271     }
 272 
 273     protected MouseInputListener createDockingListener( )
 274     {
 275         return new MetalDockingListener( toolBar );
 276     }
 277 
 278     /**
 279      * Sets the offset of the mouse cursor inside the DragWindow.
 280      *
 281      * @param p the offset
 282      */
 283     protected void setDragOffset(Point p) {
 284         if (!GraphicsEnvironment.isHeadless()) {
 285             if (dragWindow == null) {
 286                 dragWindow = createDragWindow(toolBar);
 287             }
 288             dragWindow.setOffset(p);
 289         }
 290     }
 291 
 292     /**
 293      * If necessary paints the background of the component, then invokes
 294      * <code>paint</code>.
 295      *
 296      * @param g Graphics to paint to
 297      * @param c JComponent painting on
 298      * @throws NullPointerException if <code>g</code> or <code>c</code> is
 299      *         null
 300      * @see javax.swing.plaf.ComponentUI#update
 301      * @see javax.swing.plaf.ComponentUI#paint
 302      * @since 1.5
 303      */
 304     public void update(Graphics g, JComponent c) {
 305         if (g == null) {
 306             throw new NullPointerException("graphics must be non-null");
 307         }
 308         if (c.isOpaque() && (c.getBackground() instanceof UIResource) &&
 309                             ((JToolBar)c).getOrientation() ==
 310                       JToolBar.HORIZONTAL && UIManager.get(
 311                      "MenuBar.gradient") != null) {
 312             JRootPane rp = SwingUtilities.getRootPane(c);
 313             JMenuBar mb = (JMenuBar)findRegisteredComponentOfType(
 314                                     c, JMenuBar.class);
 315             if (mb != null && mb.isOpaque() &&
 316                               (mb.getBackground() instanceof UIResource)) {
 317                 Point point = new Point(0, 0);
 318                 point = SwingUtilities.convertPoint(c, point, rp);




  96         }
  97         components.add(new WeakReference<JComponent>(c));
  98     }
  99 
 100     /**
 101      * Unregisters the specified component.
 102      */
 103     static synchronized void unregister(JComponent c) {
 104         for (int counter = components.size() - 1; counter >= 0; counter--) {
 105             // Search for the component, removing any flushed references
 106             // along the way.
 107             JComponent target = components.get(counter).get();
 108 
 109             if (target == c || target == null) {
 110                 components.remove(counter);
 111             }
 112         }
 113     }
 114 
 115     /**
 116      * Finds a previously registered component of class {@code target}
 117      * that shares the JRootPane ancestor of {@code from}.
 118      */
 119     static synchronized Object findRegisteredComponentOfType(JComponent from,
 120                                                              Class<?> target) {
 121         JRootPane rp = SwingUtilities.getRootPane(from);
 122         if (rp != null) {
 123             for (int counter = components.size() - 1; counter >= 0; counter--){
 124                 Object component = ((WeakReference)components.get(counter)).
 125                                    get();
 126 
 127                 if (component == null) {
 128                     // WeakReference has gone away, remove the WeakReference
 129                     components.remove(counter);
 130                 }
 131                 else if (target.isInstance(component) && SwingUtilities.
 132                          getRootPane((Component)component) == rp) {
 133                     return component;
 134                 }
 135             }
 136         }
 137         return null;


 236             JToggleButton b = (JToggleButton)c;
 237             Border border = b.getBorder();
 238             super.setBorderToNonRollover(c);
 239             if (border instanceof UIResource) {
 240                 if (nonRolloverBorder == null) {
 241                     nonRolloverBorder = createNonRolloverToggleBorder();
 242                 }
 243                 b.setBorder(nonRolloverBorder);
 244             }
 245         } else {
 246             super.setBorderToNonRollover(c);
 247         }
 248     }
 249 
 250 
 251     /**
 252      * Creates a container listener that will be added to the JToolBar.
 253      * If this method returns null then it will not be added to the
 254      * toolbar.
 255      *
 256      * @return an instance of a {@code ContainerListener} or null
 257      */
 258     protected ContainerListener createContainerListener() {
 259         return null;
 260     }
 261 
 262     /**
 263      * Creates a property change listener that will be added to the JToolBar.
 264      * If this method returns null then it will not be added to the
 265      * toolbar.
 266      *
 267      * @return an instance of a {@code PropertyChangeListener} or null
 268      */
 269     protected PropertyChangeListener createRolloverListener() {
 270         return null;
 271     }
 272 
 273     protected MouseInputListener createDockingListener( )
 274     {
 275         return new MetalDockingListener( toolBar );
 276     }
 277 
 278     /**
 279      * Sets the offset of the mouse cursor inside the DragWindow.
 280      *
 281      * @param p the offset
 282      */
 283     protected void setDragOffset(Point p) {
 284         if (!GraphicsEnvironment.isHeadless()) {
 285             if (dragWindow == null) {
 286                 dragWindow = createDragWindow(toolBar);
 287             }
 288             dragWindow.setOffset(p);
 289         }
 290     }
 291 
 292     /**
 293      * If necessary paints the background of the component, then invokes
 294      * {@code paint}.
 295      *
 296      * @param g Graphics to paint to
 297      * @param c JComponent painting on
 298      * @throws NullPointerException if {@code g} or {@code c} is
 299      *         null
 300      * @see javax.swing.plaf.ComponentUI#update
 301      * @see javax.swing.plaf.ComponentUI#paint
 302      * @since 1.5
 303      */
 304     public void update(Graphics g, JComponent c) {
 305         if (g == null) {
 306             throw new NullPointerException("graphics must be non-null");
 307         }
 308         if (c.isOpaque() && (c.getBackground() instanceof UIResource) &&
 309                             ((JToolBar)c).getOrientation() ==
 310                       JToolBar.HORIZONTAL && UIManager.get(
 311                      "MenuBar.gradient") != null) {
 312             JRootPane rp = SwingUtilities.getRootPane(c);
 313             JMenuBar mb = (JMenuBar)findRegisteredComponentOfType(
 314                                     c, JMenuBar.class);
 315             if (mb != null && mb.isOpaque() &&
 316                               (mb.getBackground() instanceof UIResource)) {
 317                 Point point = new Point(0, 0);
 318                 point = SwingUtilities.convertPoint(c, point, rp);


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