| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.awt; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| |
| /* SWT Imports */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.Library; |
| 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.event.ComponentAdapter; |
| import java.awt.event.ComponentEvent; |
| |
| |
| /** |
| * This class provides a bridge between SWT and AWT, so that it |
| * is possible to embedded AWT components in SWT and vice versa. |
| * |
| * @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; |
| |
| static boolean loaded, swingInitialized; |
| static Object menuSelectionManager; |
| static Method clearSelectionPath; |
| |
| static native final int /*long*/ getAWTHandle (Canvas canvas); |
| |
| static synchronized void loadLibrary () { |
| if (loaded) return; |
| loaded = true; |
| System.loadLibrary("jawt"); |
| 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); |
| |
| /* Get the swing menu selection manager to dismiss swing popups properly */ |
| clazz = Class.forName("javax.swing.MenuSelectionManager"); |
| method = clazz.getMethod("defaultManager", emptyClass); |
| if (method == null) return; |
| menuSelectionManager = method.invoke(clazz, emptyObject); |
| if (menuSelectionManager == null) return; |
| clearSelectionPath = menuSelectionManager.getClass().getMethod("clearSelectedPath", emptyClass); |
| } catch (Throwable e) {} |
| } |
| |
| /** |
| * 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); |
| } |
| int /*long*/ handle = parent.embeddedHandle; |
| /* |
| * Some JREs have implemented the embedded frame constructor to take an integer |
| * and other JREs take a long. To handle this binary incompatability, use |
| * reflection to create the embedded frame. |
| */ |
| Class clazz = null; |
| try { |
| String className = embeddedFrameClass != null ? embeddedFrameClass : "sun.awt.X11.XEmbeddedFrame"; |
| clazz = Class.forName(className); |
| } catch (Throwable e) { |
| SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e); |
| } |
| 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) { |
| SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e2); |
| } |
| } |
| final Frame frame = (Frame) value; |
| try { |
| /* Call registerListeners() to make XEmbed focus traversal work */ |
| Method method = clazz.getMethod("registerListeners", null); |
| if (method != null) method.invoke(value, null); |
| } catch (Throwable e) {} |
| parent.addListener (SWT.Deactivate, new Listener () { |
| public void handleEvent (Event event) { |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| if (menuSelectionManager != null && clearSelectionPath != null) { |
| try { |
| clearSelectionPath.invoke(menuSelectionManager, new Object[0]); |
| } catch (Throwable e) {} |
| } |
| } |
| }); |
| } |
| }); |
| parent.addListener (SWT.Dispose, new Listener () { |
| public void handleEvent (Event event) { |
| parent.setVisible(false); |
| EventQueue.invokeLater(new Runnable () { |
| public void run () { |
| frame.dispose (); |
| } |
| }); |
| } |
| }); |
| 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> |
| * </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); |
| int /*long*/ handle = 0; |
| try { |
| loadLibrary (); |
| handle = getAWTHandle (parent); |
| } catch (Throwable e) { |
| SWT.error (SWT.ERROR_NOT_IMPLEMENTED, e); |
| } |
| if (handle == 0) SWT.error (SWT.ERROR_NOT_IMPLEMENTED); |
| |
| final Shell shell = Shell.gtk_new (display, handle); |
| parent.addComponentListener(new ComponentAdapter () { |
| public void componentResized (ComponentEvent e) { |
| display.syncExec (new Runnable () { |
| public void run () { |
| Dimension dim = parent.getSize (); |
| shell.setSize (dim.width, dim.height); |
| } |
| }); |
| } |
| }); |
| shell.setVisible (true); |
| return shell; |
| } |
| } |