Fix for issue 1813: RootPanel.get(id) fails to set 'position:relative' and 'overflow:hidden'

Adds a development mode only GWT.log() warning message when an instance of AbsolutePanel
inserts a non-statically positioned child and the parent has 'position:static', which
tells developers what's wrong with their CSS and how to fix it.

In production mode the warning message is compiled out and the extra check becomes a no-op.

Review at http://gwt-code-reviews.appspot.com/636803

Fixes issues: 1813

Review by: jlabanca@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@8467 8db76d5a-ed1c-0410-87a9-c151d255dfc7
1 file changed