[FLEX-21563] Side-effecting the x/y properties on a component and invalidating the properties causes parent display list invalidation (calling setLayoutMatrix(m, false) will invalidate the parent layout causing infinate loop)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Layout - General
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 21/Oct/09 11:38
• Updated: 15/Apr/11 15:11
• Resolved: 04/Dec/09 16:40

Description

Steps to reproduce:
Call to setLayoutMAtrix() with matrix that changes the x/y position from within the layout will cause an inifiite loop.

Repro steps:
1. Compile and run the attached file
2. Click the button to set the layout matrix of the objects

Result:
The parent is invalidated and the red rectangle expands.

Expected:
The parent is not invalidates, since the invalidateLayout parameter was false. The red rectangle should not change.

Work-around:
call move(m.tx, m.ty) on the UIComponent before setting the matrix m.