[svn:fx-trunk] 8411: Make the following skin parts optional:

Revision: 8411

Author: gruehle@adobe.com

Date: 2009-07-06 16:43:15 -0700 (Mon, 06 Jul 2009)

Log Message:

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Make the following skin parts optional:

TrackBase (includes sliders and scrollbars): thumb, track

SkinnableTextBase (includes TextInput and TextArea): textDisplay

SkinnableContainer (includes Panel and Application): contentGroup

Verified all access of these parts are protected with null checks.

Bug: SDK-21663

QE Notes: Tests should be added for components with missing parts

Ticket Links:

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http://bugs.adobe.com/jira/browse/SDK-21663

Modified Paths:

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flex/sdk/trunk/frameworks/projects/spark/src/spark/components/SkinnableContainer.as

flex/sdk/trunk/frameworks/projects/spark/src/spark/components/supportClasses/SkinnableTextBase.as

flex/sdk/trunk/frameworks/projects/spark/src/spark/components/supportClasses/TrackBase.as