GWT Collapsible Panel found in common google services?

The GWT Incubator contains this widget, but it doesn't provide the clean look and feel I am looking for. The Same page does show precisely the widget I would like to use: A thin resize bar with the small middle arrow icon which is clicked to hide/show a docked panel on the s开发者_高级运维ide of the page.

The widget appears on many google services pages, which makes me suspect that it may be a common widget:

Google Reader
Slightly modified (animated) version on Maps

Does anyone where to find or know how to build this widget in GWT.

How about using a VerticalSpliPanel and overriding the OnClick event? On click you can hide your navigation panel.

I don't think Maps and Google Reader are build using GWT. I know Wave is, and it doesn't use the collapsible panel you're looking for... My guess is that this specific widget is not available in GWT but you may be able to find a suitable replacement. Let me know if you do.