RE: [abbot-users] Testing Eclipse SWT_AWT embedded AWT frames ...

[Philippe O. <pom...@ne...>]

Tim wall wrote:
> So the question is this:
> Given a composite containing an embedded AWT frame (sic -- let's be 
> careful with terms here), can you tell programmatically that 
> it has an  AWT component inside it?
> If not, I'd file a bug report against the SWT/AWT bridge component 
> (although SWT will likely consider it an RFE).

That is exactly my point. Thanks for expressing it so well. !
You cannot 'discover' programmatically an AWT frame, unless you use the
horrible kludge below (using reflection on anonymous inner classes!) on
all composites you introspect, because the SWT_AWT creates some
listeners that keeps of ref to the AWT frame. One the of the listener
will have a ref to the Frame, but this is more of a side-effect.
So that's why I entered the bug :
https://bugs.eclipse.org/bugs/show_bug.cgi?id=104301

This assumes that control is some composite, and should be wrapped in
the proper exceptions:

Widget wid = (Widget) control;
final Field field = Widget.class.getDeclaredField("eventTable");
field.setAccessible(true);
EventTable et = (EventTable) field.get(wid);
Listener[] list = et.listeners;
for (int k = 0; k < list.length; k++) {
	Listener listener = list[k];
	final Field valframe =
listener.getClass().getDeclaredField("val$frame");
	valframe.setAccessible(true);
	Object fr = valframe.get(listener);
	if (fr instanceof Frame) {
		Frame foundFrame = (Frame) fr;
		System.out.println("Yehaa we have an embedded AWT frame
!" + foundFrame);
	}
}

I'd rather rely on less kludgy code for that ;-)
-- 
Cheers
Philippe

philippe ombredanne | nexB - Open by Design (tm)
1 650 799 0949 | pombredanne at nexb.com 
http://www.nexb.com
http://sf.net/projects/easyeclipse
http://eclipse.techforge.com