Adding a LoadingStateEvent to CellList and CellTable so users can receive an event when the data is loaded.  Previously, LoadingState was a package protected enum used to show the loading indicator in CellTable and empty list message in CellList.  Now, LoadingState is a first class citizen (an interface so users can define their own loading state).  Both CellList and CellTable now support setting a custom loading indicator Widget and a custom Widget to display when the table is empty.

Review at http://gwt-code-reviews.appspot.com/1338809

Review by: pdr@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@9687 8db76d5a-ed1c-0410-87a9-c151d255dfc7
11 files changed