[FLEX-27114] List change event doesn't have the right indices when allowMultipleSelection is true and deselecting items

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Spark: List
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 17/Mar/11 20:06
• Updated: 29/Sep/11 17:52

Description

Steps to reproduce:
1. Compile and run this application:

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark">
<fx:Script>
<![CDATA[
import spark.events.IndexChangeEvent;

protected function changeItemSelection(event:IndexChangeEvent):void

{ trace('selectedIndices:', myList.selectedIndices); trace(event.type, event.oldIndex, event.newIndex); }

]]
>
</fx:Script>

<s:List id="myList" width="100%" height="100%" allowMultipleSelection="true" changing="changeItemSelection(event)" change="changeItemSelection(event)">
<s:dataProvider>
<s:ArrayList>
<fx:Object label="0" />
<fx:Object label="1" />
<fx:Object label="2" />
<fx:Object label="3" />
<fx:Object label="4" />
<fx:Object label="5" />
<fx:Object label="6" />
</s:ArrayList>
</s:dataProvider>
</s:List>

</s:Application>

2. Control click on item 1
3. Control click on item 2
4. Control click on item 3
5. Control click on item 4
6. Control click on item 5
7. Control click on item 6
8. Control click on item 1

Actual Results:

The last four trace statements show:

selectedIndices: 6,4,2,0,1,3,5
changing 6 5
selectedIndices: 5,3,1,2,4,6
change 6 5

Expected Results:

Since I'm deselecting item 1 I wouldn't expect any change/changing event from item 5 (since it didn't change).

I would expect a change event from item 1 (since it did change).

Workaround (if any):