117      */
 118     public void updateCursorLater(Component heavy) {
 119         nativeUpdater.postIfNotPending(heavy, new InvocationEvent
 120             (Toolkit.getDefaultToolkit(), nativeUpdater));
 121     }
 122 
 123     protected GlobalCursorManager() { }
 124 
 125     /**
 126      * Set the global cursor to the specified cursor. The component over
 127      * which the Cursor current resides is provided as a convenience. Not
 128      * all platforms may require the Component.
 129      */
 130     protected abstract void setCursor(Component comp, Cursor cursor,
 131                                       boolean useCache);
 132     /**
 133      * Returns the global cursor position, in screen coordinates.
 134      */
 135     protected abstract void getCursorPos(Point p);
 136 
 137     protected abstract Component findComponentAt(Container con, int x, int y);




 138     protected abstract Point getLocationOnScreen(Component com);
 139 
 140     /**
 141      * Returns the most specific, visible, heavyweight Component
 142      * under the cursor. This method should return null iff the cursor is
 143      * not over any Java Window.
 144      *
 145      * @param   useCache If true, the implementation is free to use caching
 146      * mechanisms because the Z-order, visibility, and enabled state of the
 147      * Components has not changed. If false, the implementation should not
 148      * make these assumptions.
 149      */
 150     protected abstract Component findHeavyweightUnderCursor(boolean useCache);
 151 
 152     /**
 153      * Updates the global cursor. We apply a three-step scheme to cursor
 154      * updates:<p>
 155      *
 156      * (1) InputEvent updates which are outdated are discarded by
 157      * <code>updateCursorImmediately(InputEvent)</code>.<p>

 117      */
 118     public void updateCursorLater(Component heavy) {
 119         nativeUpdater.postIfNotPending(heavy, new InvocationEvent
 120             (Toolkit.getDefaultToolkit(), nativeUpdater));
 121     }
 122 
 123     protected GlobalCursorManager() { }
 124 
 125     /**
 126      * Set the global cursor to the specified cursor. The component over
 127      * which the Cursor current resides is provided as a convenience. Not
 128      * all platforms may require the Component.
 129      */
 130     protected abstract void setCursor(Component comp, Cursor cursor,
 131                                       boolean useCache);
 132     /**
 133      * Returns the global cursor position, in screen coordinates.
 134      */
 135     protected abstract void getCursorPos(Point p);
 136 
 137     protected Component findComponentAt(Container con, int x, int y){
 138         return AWTAccessor.getContainerAccessor().
 139                 findComponentAt(con, x, y, false);
 140     }
 141 
 142     protected abstract Point getLocationOnScreen(Component com);
 143 
 144     /**
 145      * Returns the most specific, visible, heavyweight Component
 146      * under the cursor. This method should return null iff the cursor is
 147      * not over any Java Window.
 148      *
 149      * @param   useCache If true, the implementation is free to use caching
 150      * mechanisms because the Z-order, visibility, and enabled state of the
 151      * Components has not changed. If false, the implementation should not
 152      * make these assumptions.
 153      */
 154     protected abstract Component findHeavyweightUnderCursor(boolean useCache);
 155 
 156     /**
 157      * Updates the global cursor. We apply a three-step scheme to cursor
 158      * updates:<p>
 159      *
 160      * (1) InputEvent updates which are outdated are discarded by
 161      * <code>updateCursorImmediately(InputEvent)</code>.<p>