[FLEX-26070] typicalItem isn't respected when changing dataProviders on a DataGroup

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Spark: DataGroup
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 30/Nov/10 10:19
• Updated: 14/Mar/11 21:22
• Resolved: 01/Dec/10 10:24

Description

Steps to reproduce:
1. Compile and run:

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">

<s:controlBarContent>
<s:Button label="1. clear data" click="group1.dataProvider = null" />
<s:Button label="2. set new data" click="group1.dataProvider = new ArrayList([0,1,2,3])" />
</s:controlBarContent>

<s:DataGroup id="group1" typicalItem="-1">
<s:itemRenderer>
<fx:Component>
<s:ItemRenderer creationComplete="trace(data)">
<s:Label text="

{data}

" />
</s:ItemRenderer>
</fx:Component>
</s:itemRenderer>
<s:layout>
<s:VerticalLayout useVirtualLayout="true" />
</s:layout>
<s:dataProvider>
<s:ArrayList>
<fx:Array>
[0,1,2,3,4,5,6]
</fx:Array>
</s:ArrayList>
</s:dataProvider>
</s:DataGroup>

</s:Application>

2. Click clear data
3. Click set new data

Actual Results:

trace output:

-1
0
1
2
3
4
5
6
0
0
1
2
3

Expected Results:

trace output:
-1
0
1
2
3
4
5
6
-1
0
1
2
3

Workaround (if any):