[FLEX-26528] ItemRenderer.itemIndex should return -1 when rendering the typicalItem

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Later
• Affects Version/s: Adobe Flex SDK 4.5 (Release)
• 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: 22/Jan/11 19:25
• Updated: 10/May/11 13:48
• Resolved: 26/Jan/11 10:48

Description

Sometimes you need to be able to distinguish between the typicalItem and a normal data item in a spark ItemRenderer. It would be nice if itemIndex returned -1 instead of 0 when rendering the typicalItem.

For example:

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

<s:List>
<s:dataProvider>
<s:ArrayList>
<fx:String>0</fx:String>
<fx:String>1</fx:String>
<fx:String>2</fx:String>
</s:ArrayList>
</s:dataProvider>
<s:itemRenderer>
<fx:Component>
<s:ItemRenderer>
<fx:Script>
<![CDATA[
override public function set data(value:Object):void

{ super.data = value; trace("itemIndex:", itemIndex, "data:", data); }

]]
>
</fx:Script>
<s:Label text="

{data}

" />
</s:ItemRenderer>
</fx:Component>
</s:itemRenderer>
</s:List>

</s:Application>

Actual Results:

itemIndex: 0 data: 0
itemIndex: 0 data: 0
itemIndex: 1 data: 1
itemIndex: 2 data: 2

Expected Results:

itemIndex: -1 data: 0
itemIndex: 0 data: 0
itemIndex: 1 data: 1
itemIndex: 2 data: 2

I'm not sure if this is a popular use case, but it is something that caused me some pain in building some QA automation in combination with SDK-28709.