[chimpeenuts]

Kudos kjmoroney

Thanks to everyone who participated in this thread.

I had to deal with this very issue this evening and kjmoroney's solution worked flawlessly.

Since I wanted to access non-static members in my dualPaneDragEvent method, I passed in a reference and used slighlty different JSNI:

	private native void addDragResizeEventsSupport(Canvas container) /*-{
    $wnd.icf_dragStartDualPane = function() {
	    container.@com.web.ui.client.MyLayout::dualPaneDragEvent(Ljava/lang/String;)('dragStart');
    };
    $wnd.icf_dragStopDualPane = function() {
	    container.@com.web.ui.client.MyLayout::dualPaneDragEvent(Ljava/lang/String;)('dragStop');
    };
	}-*/;

As for those interested in the mask, I had a Canvas element with a full size HTMLPane that hosted an iframe containing Google maps. Then I just displayed a Mask made up of a canvas with a really high Z-index:

this.setWidth100();
		this.setHeight100();

		// Create HTMLPane to hold map div
		_mapPane = new HTMLPane();
		_mapPane.setWidth100();
		_mapPane.setHeight100();
		_mapPane.setStyleName("map_holder");

		// This creates the iFrame to hold the map
		_mapPane.setContents("<iframe id='" + MAP_IFRAME_ID + "' src='" + "map/map.html" + "' />");

		_mapPane.setContentsType(ContentsType.PAGE);
		
		_dragMask = new Canvas();
		_dragMask.setWidth100();
		_dragMask.setHeight100();
		_dragMask.setVisible(false);
		_dragMask.setZIndex(999999);

		// Add Pane to layout
		this.addChild(_mapPane);
		
		// Add Mask to layout
		this.addChild(_dragMask);

Finally, i Connected the event dragging by using a class Method on my Canvas with the map:

	public void setShowDragMask(boolean show) {
		_dragMask.setVisible(show);
	}

And my drag event ahndler:

	private void dualPaneDragEvent(String action) {
		System.out.println("Resize bar dragging event: " + action);
		if (_map.isVisible())
			_map.setShowDragMask(action.equals("dragStart"));
	}

I add my drag event support after I call _appRootLayout.draw() in my entry point method. I didn't add an onDraw handler or have to search for children as discussed in this thread.

It would be nice if there was inherit support for capturing resize bar start and stop events in 4.0.

[Jkike]

Hi,
I had the same problem with a splitPanel and an iframe.

Thank you very much for sharing the solution.

Barbara