[FLEX-24893] Changing skin at run time, and skin content container changes from VGroup to Group causes runtime error

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Apache Flex 4.12.0
• Component/s: Spark: SkinnableContainer
• Labels: easytest
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Browser: Safari; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 15/Aug/10 16:05
• Updated: 25/Jun/14 14:19

Description

Steps to reproduce:
1. Create a component that extends SkinnableContainer
2. Create one skin with <Group id="contentGroup" />
3. Create another skin class with <VGroup id="contentGroup" />
4. Toggle between the skin classes during runtime

Actual Results:
The following runtime error is shown:
Error: You are not allowed to change the layout for this class. It is read-only.
at spark.components::VGroup/set layout()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\VGroup.as:465]
at spark.components::SkinnableContainer/partRemoved()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\SkinnableContainer.as:955]
at com.vmware.ue.treenavigation.view.components::MockObjectContainer/partRemoved()[/Users/swid/Workspaces/ue/prototypes/TreeNavigation/src/com/vmware/ue/treenavigation/view/components/MockObjectContainer.as:61]
at spark.components.supportClasses::SkinnableComponent/clearSkinParts()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:698]
at spark.components.supportClasses::SkinnableComponent/detachSkin()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:732]
at spark.components.supportClasses::SkinnableComponent/validateSkinChange()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:404]
at spark.components.supportClasses::SkinnableComponent/commitProperties()[E:\dev\4.0.0\frameworks\projects\spark\src\spark\components\supportClasses\SkinnableComponent.as:419]
at mx.core::UIComponent/validateProperties()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\core\UIComponent.as:7772]
at mx.managers::LayoutManager/validateProperties()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:572]
at mx.managers::LayoutManager/doPhasedInstantiation()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:730]
at mx.managers::LayoutManager/doPhasedInstantiationCallback()[E:\dev\4.0.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:1072]

Expected Results:
I would expect that changing the content group's container from Group to VGroup to Group, would not cause a runtime error. The container, I suppose, should be reinstantiated.

Workaround (if any):
In both skin classes, use <Group> component and change the layout using <layout><VerticalLayout /></layout>

Issue Links

• is related to: FLEX-34383 RTE when removing SkinnableContainer with skinDestructionPolicy "auto" and skin with VGroup or HGroup as the "contentGroup"