Class com.sun.java.swing.SwingUtilities

 public static void convertPointToScreen(Point p,
                                         Component c)

 public static void convertPointFromScreen(Point p,
                                           Component c)

 public static Window windowForComponent(Component aComponent)

Return aComponent's window

 public static boolean isDescendingFrom(Component a,
                                        Component b)

Return true if a component a descends from a component b

 public static Rectangle computeIntersection(int x,
                                             int y,
                                             int width,
                                             int height,
                                             Rectangle dest)

Convenience to calculate an intersection of two rectangles without allocating a new rectangle Return dest.

 public static Rectangle computeUnion(int x,
                                      int y,
                                      int width,
                                      int height,
                                      Rectangle dest)

Convenience to calculate the union of two rectangles without allocating a new rectangle Return dest

 public static Rectangle[] computeDifference(Rectangle rectA,
                                             Rectangle rectB)

Convenience returning an array of rect representing the regions within rectA that do not overlap with rectB. If the two Rects do not overlap, returns an empty array

 public static boolean isLeftMouseButton(MouseEvent anEvent)

 public static boolean isMiddleMouseButton(MouseEvent anEvent)

 public static boolean isRightMouseButton(MouseEvent anEvent)

 public static int computeStringWidth(FontMetrics fm,
                                      String str)

 public static String layoutCompoundLabel(FontMetrics fm,
                                          String text,
                                          Icon icon,
                                          int verticalAlignment,
                                          int horizontalAlignment,
                                          int verticalTextPosition,
                                          int horizontalTextPosition,
                                          Rectangle viewR,
                                          Rectangle iconR,
                                          Rectangle textR,
                                          int textIconGap)

Compute and return the location of the icons origin, the location of origin of the text baseline, and a possibly clipped version of the compound labels string. Locations are computed relative to the viewR rectangle.

 public static void paintComponent(Graphics g,
                                   Component c,
                                   Container p,
                                   int x,
                                   int y,
                                   int w,
                                   int h)

Paint a component c on an abitrary graphics g in the specified rectangle. The component is reparented to a private container (whose parent becomes p) which prevents c.validate() and and c.repaint() calls from propogating up the tree. The intermediate container has no other effect.

 public static void paintComponent(Graphics g,
                                   Component c,
                                   Container p,
                                   Rectangle r)

 public static void updateComponentTreeUI(Component c)

A simple minded look and feel change: ask each node in the tree to updateUI(), i.e. to initialize its UI property with the current look and feel.

 public static void invokeLater(Runnable doRun)

Causes doRun.run() to be executed asynchronously on the AWT event dispatching thread. This will happen after all pending AWT events have been processed. This method should be used when an application thread needs to update the GUI. In the following example the invokeAndWait() calls queues the doHelloWorld Runnable for the event dispatching thread and then prints a message.

 Runnable doHelloWorld = new Runnable() {
     public void run() {
         System.out.println("Hello World on " + Thread.currentThread());
     }
 };
 SwingUtilities.invokeAndWait(doHelloWorld);
 System.out.println("Waiting ... ");
 

If invokeAndWait is called from the event dispatching thread, e.g. from a JButtons ActionListener, the doRun.run() will still be deferred till all pending events have been processed. Note that if the doRun.run() throws an uncaught exception the event dispatching thread will unwind (not the current thread).

Additional documentation and examples for this method can be found in .

See Also:

invokeAndWait

 public static void invokeAndWait(Runnable doRun) throws InterruptedException, InvocationTargetException

Causes doRun.run() to be executed synchronously on the AWT event dispatching thread. This call will block until all pending AWT events have been processed and (then) doRun.run() returns. This method should be used when an application thread needs to update the GUI. It should not be called from the EventDispatchThread. Here's an example that creates a new application thread that uses invokeAndWait() to print a string from the event dispatching thread and then, when that's finished, print a string from the application thread.

 final Runnable doHelloWorld = new Runnable() {
     public void run() {
         System.out.println("Hello World on " + Thread.currentThread());
     }
 };
 Thread appThread = new Thread() {
     public void run() {
         try {
             SwingUtilities.invokeAndWait(doHelloWorld);
         }
         catch (Exception e) {
		   e.printStackTrace();
         }
         System.out.println("Finished on " + Thread.currentThread());
     }
 };
 appThread.start();
 

Note that if the Runnable.run() method throws an uncaught exception (on the event dispatching thread) it's caught and rethrown, as an InvocationTargetException, on the callers thread.

Additional documentation and examples for this method can be found in .

Throws: InterruptedException

If we're interrupted while waiting for the event dispatching thread to finish excecuting doRun.run()

Throws: InvocationTargetException

If doRun.run() throws

See Also:

invokeLater

 public static boolean isEventDispatchThread()

Returns:

true if the current thread is an AWT event dispatching thread.

 public static int getAccessibleIndexInParent(Component c)

Get the index of this object in its accessible parent.

Returns:

-1 of this object does not have an accessible parent. Otherwise, the index of the child in its accessible parent.

 public static Accessible getAccessibleAt(Component c,
                                          Point p)

Returns the Accessible child contained at the local coordinate Point, if one exists.

Returns:

the Accessible at the specified location, if it exists

 public static AccessibleStateSet getAccessibleStateSet(Component c)

Get the state of this object.

Returns:

an instance of AccessibleStateSet containing the current state set of the object

See Also:

AccessibleState

 public static int getAccessibleChildrenCount(Component c)

Returns the number of accessible children in the object. If all of the children of this object implement Accessible, than this method should return the number of children of this object.

Returns:

the number of accessible children in the object.

 public static Accessible getAccessibleChild(Component c,
                                             int i)

Return the nth Accessible child of the object.

Parameters:

i - zero-based index of child

Returns:

the nth Accessible child of the object

 public static Component findFocusOwner(Component c)

Return the child component which has focus, if any. The HotJava SecurityManager forbids applet access to getFocusOwner(), so if the component is an applet, we check whether a JComponent has focus. Non-Swing components in an applet on HotJava are out-of-luck, unfortunately.

 public static JRootPane getRootPane(Component c)

If c is a JRootPane descendant return its JRootPane ancestor. If c is a RootPaneContainer then return its JRootPane.

Returns:

the JRootPane for Component c or null.

 public static Component getRoot(Component c)

Returns:

the first ancestor of c that's a Window or the last Applet ancestor.

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