[FLEX-26438] ArrayCollection - setItemAt API malfunctioning when it has filter function

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK 4.1 (Release)
• Fix Version/s: Apache Flex 4.10.0
• Component/s: Collections
• Labels: easytest
• Environment: Affected OS(s): All OS Platforms; Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Unassigned
• Reporter: Adobe JIRA
• Created: 14/Jan/11 11:47
• Updated: 16/May/13 07:20
• Resolved: 16/May/13 07:20

Description

Steps to reproduce:

1.Create an ArrayCollection instance with any data

public var dp:ArrayCollection = new ArrayCollection( [

{label:'santosh'}

,

{label:'kumar'}

]);

2.Create any filter function

dp.filterFunction = function (itemA:Object):Boolean {
return true;
}
dp.refresh();

3. Swap elements in the following order

var item1:Object = dp.getItemAt(0);
var item2:Object = dp.getItemAt(1);

dp.setItemAt(item2,0);
dp.setItemAt(item1,1);

Actual Results:

Swapping failed

{label:'santosh'}

,

{label:'kumar'}

Expected Results:

{label:'kumar'}

,

{label:'santosh'}

Workaround (if any):

When ArrayCollection has filter function attached to it then Use setItemAt API swap the elements starting from the highest order to the lowest.

Do this:
dp.setItemAt(item1,1);
dp.setItemAt(item2,0);

Don't do:
dp.setItemAt(item2,0);
dp.setItemAt(item1,1);

This issue can been reproduced even in previous version of Flex SDK's.