| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.awt; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Field; |
| import java.lang.reflect.Method; |
| |
| /* SWT Imports */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Event; |
| |
| /* AWT Imports */ |
| import java.awt.Dimension; |
| import java.awt.EventQueue; |
| import java.awt.Canvas; |
| import java.awt.Frame; |
| import java.awt.Toolkit; |
| import java.awt.event.ComponentAdapter; |
| import java.awt.event.ComponentEvent; |
| import java.awt.event.ComponentListener; |
| import java.awt.event.WindowEvent; |
| import java.awt.event.FocusEvent; |
| |
| /** |
| * This class provides a bridge between SWT and AWT, so that it |
| * is possible to embed AWT components in SWT and vice versa. |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#awt">Swing/AWT snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * |
| * @since 3.0 |
| */ |
| public class SWT_AWT { |
| |
| /** |
| * The name of the embedded Frame class. The default class name |
| * for the platform will be used if <code>null</code>. |
| */ |
| public static String embeddedFrameClass; |
| |
| /** |
| * Key for looking up the embedded frame for a Composite using |
| * getData(). |
| */ |
| static String EMBEDDED_FRAME_KEY = "org.eclipse.swt.awt.SWT_AWT.embeddedFrame"; |
| |
| static boolean loaded, swingInitialized; |
| |
| static native final long /*int*/ getAWTHandle (Canvas canvas); |
| |
| static synchronized void loadLibrary () { |
| if (loaded) return; |
| loaded = true; |
| Toolkit.getDefaultToolkit(); |
| /* |
| * Note that the jawt library is loaded explicitly |
| * because it cannot be found by the library loader. |
| * All exceptions are caught because the library may |
| * have been loaded already. |
| */ |
| try { |
| System.loadLibrary("jawt"); |
| } catch (Throwable e) {} |
| Library.loadLibrary("swt-awt"); |
| } |
| |
| static synchronized void initializeSwing() { |
| if (swingInitialized) return; |
| swingInitialized = true; |
| try { |
| /* Initialize the default focus traversal policy */ |
| Class[] emptyClass = new Class[0]; |
| Object[] emptyObject = new Object[0]; |
| Class clazz = Class.forName("javax.swing.UIManager"); |
| Method method = clazz.getMethod("getDefaults", emptyClass); |
| if (method != null) method.invoke(clazz, emptyObject); |
| } catch (Throwable e) {} |
| } |
| |
| /** |
| * Returns a <code>java.awt.Frame</code> which is the embedded frame |
| * associated with the specified composite. |
| * |
| * @param parent the parent <code>Composite</code> of the <code>java.awt.Frame</code> |
| * @return a <code>java.awt.Frame</code> the embedded frame or <code>null</code>. |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * |
| * @since 3.2 |
| */ |
| public static Frame getFrame (Composite parent) { |
| if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if ((parent.getStyle () & SWT.EMBEDDED) == 0) return null; |
| return (Frame)parent.getData(EMBEDDED_FRAME_KEY); |
| } |
| |
| /** |
| * Creates a new <code>java.awt.Frame</code>. This frame is the root for |
| * the AWT components that will be embedded within the composite. In order |
| * for the embedding to succeed, the composite must have been created |
| * with the SWT.EMBEDDED style. |
| * <p> |
| * IMPORTANT: As of JDK1.5, the embedded frame does not receive mouse events. |
| * When a lightweight component is added as a child of the embedded frame, |
| * the cursor does not change. In order to work around both these problems, it is |
| * strongly recommended that a heavyweight component such as <code>java.awt.Panel</code> |
| * be added to the frame as the root of all components. |
| * </p> |
| * |
| * @param parent the parent <code>Composite</code> of the new <code>java.awt.Frame</code> |
| * @return a <code>java.awt.Frame</code> to be the parent of the embedded AWT components |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parent Composite does not have the SWT.EMBEDDED style</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public static Frame new_Frame (final Composite parent) { |
| if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if ((parent.getStyle () & SWT.EMBEDDED) == 0) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| final long /*int*/ handle = parent.handle; |
| final Frame[] result = new Frame[1]; |
| final Throwable[] exception = new Throwable[1]; |
| Runnable runnable = new Runnable () { |
| public void run () { |
| try { |
| /* |
| * Some JREs have implemented the embedded frame constructor to take an integer |
| * and other JREs take a long. To handle this binary incompatibility, use |
| * reflection to create the embedded frame. |
| */ |
| Class clazz = null; |
| try { |
| String className = embeddedFrameClass != null ? embeddedFrameClass : "sun.awt.windows.WEmbeddedFrame"; |
| clazz = Class.forName(className); |
| } catch (Throwable e) { |
| exception[0] = e; |
| return; |
| } |
| initializeSwing (); |
| Object value = null; |
| Constructor constructor = null; |
| try { |
| constructor = clazz.getConstructor (new Class [] {int.class}); |
| value = constructor.newInstance (new Object [] {new Integer ((int)/*64*/handle)}); |
| } catch (Throwable e1) { |
| try { |
| constructor = clazz.getConstructor (new Class [] {long.class}); |
| value = constructor.newInstance (new Object [] {new Long (handle)}); |
| } catch (Throwable e2) { |
| exception[0] = e2; |
| return; |
| } |
| } |
| final Frame frame = (Frame) value; |
| /* |
| * This is necessary to make lightweight components |
| * directly added to the frame receive mouse events |
| * properly. |
| */ |
| frame.addNotify(); |
| |
| /* |
| * TEMPORARY CODE |
| * |
| * For some reason, the graphics configuration of the embedded |
| * frame is not initialized properly. This causes an exception |
| * when the depth of the screen is changed. |
| */ |
| try { |
| clazz = Class.forName("sun.awt.windows.WComponentPeer"); |
| Field field = clazz.getDeclaredField("winGraphicsConfig"); |
| field.setAccessible(true); |
| field.set(frame.getPeer(), frame.getGraphicsConfiguration()); |
| } catch (Throwable e) {} |
| |
| result[0] = frame; |
| } finally { |
| synchronized(result) { |
| result.notify(); |
| } |
| } |
| } |
| }; |
| if (EventQueue.isDispatchThread() || parent.getDisplay().getSyncThread() != null) { |
| runnable.run(); |
| } else { |
| EventQueue.invokeLater(runnable); |
| OS.ReplyMessage(0); |
| boolean interrupted = false; |
| MSG msg = new MSG (); |
| int flags = OS.PM_NOREMOVE | OS.PM_NOYIELD | OS.PM_QS_SENDMESSAGE; |
| while (result[0] == null && exception[0] == null) { |
| OS.PeekMessage (msg, 0, 0, 0, flags); |
| try { |
| synchronized (result) { |
| result.wait(50); |
| } |
| } catch (InterruptedException e) { |
| interrupted = true; |
| } |
| } |
| if (interrupted) { |
| Compatibility.interrupt(); |
| } |
| } |
| if (exception[0] != null) { |
| SWT.error (SWT.ERROR_NOT_IMPLEMENTED, exception[0]); |
| } |
| final Frame frame = result[0]; |
| |
| parent.setData(EMBEDDED_FRAME_KEY, frame); |
| |
| /* Forward the iconify and deiconify events */ |
| final Listener shellListener = new Listener () { |
| public void handleEvent (Event e) { |
| switch (e.type) { |
| case SWT.Deiconify: |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_DEICONIFIED)); |
| } |
| }); |
| break; |
| case SWT.Iconify: |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_ICONIFIED)); |
| } |
| }); |
| break; |
| } |
| } |
| }; |
| Shell shell = parent.getShell (); |
| shell.addListener (SWT.Deiconify, shellListener); |
| shell.addListener (SWT.Iconify, shellListener); |
| |
| /* |
| * Generate the appropriate events to activate and deactivate |
| * the embedded frame. This is needed in order to make keyboard |
| * focus work properly for lightweights. |
| */ |
| Listener listener = new Listener () { |
| public void handleEvent (Event e) { |
| switch (e.type) { |
| case SWT.Dispose: |
| Shell shell = parent.getShell (); |
| shell.removeListener (SWT.Deiconify, shellListener); |
| shell.removeListener (SWT.Iconify, shellListener); |
| parent.setVisible(false); |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| try { |
| frame.dispose (); |
| } catch (Throwable e) {} |
| } |
| }); |
| break; |
| case SWT.FocusIn: |
| case SWT.Activate: |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| if (Library.JAVA_VERSION < Library.JAVA_VERSION(1, 4, 0)) { |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_ACTIVATED)); |
| frame.dispatchEvent (new FocusEvent (frame, FocusEvent.FOCUS_GAINED)); |
| } else if (Library.JAVA_VERSION < Library.JAVA_VERSION(1, 5, 0)) { |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_ACTIVATED)); |
| frame.dispatchEvent (new WindowEvent (frame, 207 /*WindowEvent.WINDOW_GAINED_FOCUS*/)); |
| } else { |
| if (frame.isActive()) return; |
| try { |
| Class clazz = frame.getClass(); |
| Method method = clazz.getMethod("synthesizeWindowActivation", new Class[]{boolean.class}); |
| if (method != null) method.invoke(frame, new Object[]{new Boolean(true)}); |
| } catch (Throwable e) {} |
| } |
| } |
| }); |
| break; |
| case SWT.Deactivate: |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| if (Library.JAVA_VERSION < Library.JAVA_VERSION(1, 4, 0)) { |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_DEACTIVATED)); |
| frame.dispatchEvent (new FocusEvent (frame, FocusEvent.FOCUS_LOST)); |
| } else if (Library.JAVA_VERSION < Library.JAVA_VERSION(1, 5, 0)) { |
| frame.dispatchEvent (new WindowEvent (frame, 208 /*WindowEvent.WINDOW_LOST_FOCUS*/)); |
| frame.dispatchEvent (new WindowEvent (frame, WindowEvent.WINDOW_DEACTIVATED)); |
| } else { |
| if (!frame.isActive()) return; |
| try { |
| Class clazz = frame.getClass(); |
| Method method = clazz.getMethod("synthesizeWindowActivation", new Class[]{boolean.class}); |
| if (method != null) method.invoke(frame, new Object[]{new Boolean(false)}); |
| } catch (Throwable e) {} |
| } |
| } |
| }); |
| break; |
| } |
| } |
| }; |
| if (Library.JAVA_VERSION < Library.JAVA_VERSION(1, 5, 0)) { |
| parent.addListener (SWT.Activate, listener); |
| } else { |
| parent.addListener (SWT.FocusIn, listener); |
| } |
| parent.addListener (SWT.Deactivate, listener); |
| parent.addListener (SWT.Dispose, listener); |
| |
| parent.getDisplay().asyncExec(new Runnable() { |
| public void run () { |
| if (parent.isDisposed()) return; |
| final Rectangle clientArea = parent.getClientArea(); |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| frame.setSize (clientArea.width, clientArea.height); |
| frame.validate (); |
| } |
| }); |
| } |
| }); |
| return frame; |
| } |
| |
| /** |
| * Creates a new <code>Shell</code>. This Shell is the root for |
| * the SWT widgets that will be embedded within the AWT canvas. |
| * |
| * @param display the display for the new Shell |
| * @param parent the parent <code>java.awt.Canvas</code> of the new Shell |
| * @return a <code>Shell</code> to be the parent of the embedded SWT widgets |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the display is null</li> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the parent's peer is not created</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public static Shell new_Shell (final Display display, final Canvas parent) { |
| if (display == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| long /*int*/ handle = 0; |
| try { |
| loadLibrary (); |
| handle = getAWTHandle (parent); |
| } catch (Throwable e) { |
| SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e); |
| } |
| if (handle == 0) SWT.error (SWT.ERROR_INVALID_ARGUMENT, null, " [peer not created]"); |
| |
| final Shell shell = Shell.win32_new (display, handle); |
| final ComponentListener listener = new ComponentAdapter () { |
| public void componentResized (ComponentEvent e) { |
| display.syncExec (new Runnable () { |
| public void run () { |
| if (shell.isDisposed()) return; |
| Dimension dim = parent.getSize (); |
| shell.setSize (dim.width, dim.height); |
| } |
| }); |
| } |
| }; |
| parent.addComponentListener(listener); |
| shell.addListener(SWT.Dispose, new Listener() { |
| public void handleEvent(Event event) { |
| parent.removeComponentListener(listener); |
| } |
| }); |
| shell.setVisible (true); |
| return shell; |
| } |
| } |