static synchronized void initializeSwing() {
if (swingInitialized) return;
swingInitialized = true;
/*
* Feature in GTK. The default X error handler
* for GTK calls exit() after printing the X error.
* Normally, this isn't that big a problem for SWT
* applications because they don't cause X errors.
* However, sometimes X errors are generated by AWT
* that make SWT exit. The fix is to hide all X
* errors when AWT is running.
*/
OS.gdk_error_trap_push();
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) {
}
}
/**
* 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.
*
* @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>ERROR_INVALID_ARGUMENT - if the parent Composite does not have the SWT.EMBEDDED style
* </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 incompatibility, 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, " [need JDK 1.5 or greater]");
}
initializeSwing();
Object value = null;
Constructor constructor = null;
try {
constructor = clazz.getConstructor(new Class[] {int.class, boolean.class});
value =
constructor.newInstance(new Object[] {new Integer((int) /*64*/ handle), Boolean.TRUE});
} catch (Throwable e1) {
try {
constructor = clazz.getConstructor(new Class[] {long.class, boolean.class});
value = constructor.newInstance(new Object[] {new Long(handle), Boolean.TRUE});
} catch (Throwable e2) {
SWT.error(SWT.ERROR_NOT_IMPLEMENTED, e2);
}
}
final Frame frame = (Frame) value;
parent.setData(EMBEDDED_FRAME_KEY, frame);
if (Device.DEBUG) {
loadLibrary();
setDebug(frame, true);
}
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) {
}
final AWTEventListener awtListener =
new AWTEventListener() {
public void eventDispatched(AWTEvent event) {
if (event.getID() == WindowEvent.WINDOW_OPENED) {
final Window window = (Window) event.getSource();
if (window.getParent() == frame) {
parent
.getDisplay()
.asyncExec(
new Runnable() {
public void run() {
if (parent.isDisposed()) return;
Shell shell = parent.getShell();
loadLibrary();
int /*long*/ awtHandle = getAWTHandle(window);
if (awtHandle == 0) return;
int /*long*/ xWindow =
OS.gdk_x11_drawable_get_xid(
OS.GTK_WIDGET_WINDOW(OS.gtk_widget_get_toplevel(shell.handle)));
OS.XSetTransientForHint(
OS.gdk_x11_display_get_xdisplay(OS.gdk_display_get_default()),
awtHandle,
xWindow);
}
});
}
}
}
};
frame.getToolkit().addAWTEventListener(awtListener, AWTEvent.WINDOW_EVENT_MASK);
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);
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() {
frame.getToolkit().removeAWTEventListener(awtListener);
frame.dispose();
}
});
break;
case SWT.Resize:
if (Library.JAVA_VERSION >= Library.JAVA_VERSION(1, 6, 0)) {
final Rectangle clientArea = parent.getClientArea();
EventQueue.invokeLater(
new Runnable() {
public void run() {
frame.setSize(clientArea.width, clientArea.height);
}
});
}
break;
}
}
};
parent.addListener(SWT.Dispose, listener);
parent.addListener(SWT.Resize, 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;
}
