Revision 1279062

Transferred from the Adobe Open Source Subversion Repository

Revision: 18500
Author:   cframpto@adobe.com
Date:     2010-11-09T16:53:19.948108Z

Log Message: 
-----------
The column header group should not be a focusable component and when setting the GridDimension/columnCount need to clear the cache even when the column count has not changed because the columns themselves could have changed and the new list of columns could have the same number of columns as the old list of columns.

QE notes: 
Doc notes: 
Bugs: SDK-28449, SDK-28420
Reviewer: Kevin
Tests run: cyclone
Is noteworthy for integration:

Modified Paths:
--------------
<path kind="file" action="M">/private/flex/sdk/branches/hero_private/frameworks/projects/spark/src/spark/components/Grid.as</path>
<path kind="file" action="M">/private/flex/sdk/branches/hero_private/frameworks/projects/spark/src/spark/components/GridColumnHeaderGroup.as</path>
<path kind="file" action="M">/private/flex/sdk/branches/hero_private/frameworks/projects/spark/src/spark/components/DataGrid.as</path>
<path kind="file" action="M">/private/flex/sdk/branches/hero_private/frameworks/projects/spark/src/spark/components/gridClasses/GridDimensions.as</path>