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https://issues.apache.org/jira/browse/FLEX-14936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Mclean resolved FLEX-14936.
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Resolution: Not A Problem
Test in Apache Flex 4.9.1 Fixed in an earlier version of the SDK.
> List selectedItem and selectedIndex not updated on refresh() using empty array
> ------------------------------------------------------------------------------
>
> Key: FLEX-14936
> URL: https://issues.apache.org/jira/browse/FLEX-14936
> Project: Apache Flex
> Issue Type: Bug
> Components: mx: List
> Affects Versions: Adobe Flex SDK 3.0 (Release)
> Environment: Affected OS(s): All OS Platforms
> Browser: Firefox 2.x
> Language Found: English
> Reporter: Adobe JIRA
> Labels: easytest
>
> Steps to reproduce:
> 1. Run the following test application in debug mode
> 2. Select the last item in the list, and then click the "Delete Last Item"
> button
> 3. Look at the trace output to see the problem when deleting the last item in
> the array.
> <?xml version="1.0" encoding="utf-8"?>
> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; layout="vertical"
> initialize="init()">
> <mx:Script>
> <![CDATA[
> private var items:Array = [ "One", "Two", "Three" ];
> private function init() {
> list.dataProvider = items;
> }
> private function removeItem(event:Event) {
> trace("before: selected index = " + list.selectedIndex);
> items.pop();
> list.dataProvider.refresh();
> trace("after: selected index = " + list.selectedIndex);
> }
> ]]
> >
> </mx:Script>
> <mx:Button label="Delete Last Item" click="removeItem(event);" />
> <mx:List id="list" width="100"/>
> </mx:Application>
>
> Actual Results:
> After each deletion, the selectedIndex property on the list should be -1,
> indicating no selection since the previously selected item was deleted.
>
> Expected Results:
> Works as expected until the final element is removed. In that case the list
> still shows the selectedIndex as 0 (not -1)
>
> Workaround (if any):
> Check if (list.dataProvider.length == 0) after doing the refresh(), and
> manually set selectedIndex = -1.
>
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