[jira] [Commented] (FLEX-15274) ComboBox: setting selectedItem=null does not reset the control as it is should be

["Mark Kessler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLEX-15274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13633934#comment-13633934 ] 

Mark Kessler commented on FLEX-15274:
-------------------------------------

Test app data

<?xml version="1.0" encoding="utf-8"?>
<!---
   Test application
-->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
               xmlns:s="library://ns.adobe.com/flex/spark"
               xmlns:mx="library://ns.adobe.com/flex/mx"
               creationComplete="onCreationComplete();"> 

    <fx:Script>
        <![CDATA[

        protected function onCreationComplete():void
        {
            trace("Setting selectedIndex to (1) then to (-1) then showing results");
            cboTest.selectedIndex = 1;
            cboTest.selectedIndex = -1;
            trace("    selectedIndex: " + String(cboTest.selectedIndex));
            trace("    selectedItem: " + String(cboTest.selectedItem));

            trace("");

            trace("Setting selectedItem to ('Green') then to (null) then showing results");
            cboTest.selectedItem = 'Green';
            cboTest.selectedItem = null;
            trace("    selectedIndex: " + String(cboTest.selectedIndex));
            trace("    selectedItem: " + String(cboTest.selectedItem));
        }

        ]]>
    </fx:Script>

    <s:layout>
        <s:VerticalLayout horizontalAlign="center" verticalAlign="middle" gap="0" />
    </s:layout>

    <mx:ComboBox id="cboTest" dataProvider="['Blue', 'Green', 'Red']" />

</s:Application>

                
> ComboBox: setting selectedItem=null does not reset the control as it is should be
> ---------------------------------------------------------------------------------
>
>                 Key: FLEX-15274
>                 URL: https://issues.apache.org/jira/browse/FLEX-15274
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: mx: ComboBox
>    Affects Versions: Adobe Flex SDK 3.0 (Release)
>         Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Language Found: English
>            Reporter: Adobe JIRA
>            Assignee: Mark Kessler
>
> There was a similar bug 
> https://bugs.adobe.com/jira/browse/SDK-11282
> It has not been fixed in Flex 3 Release despite of its status.
> Please an attached example why setting selectedItem to null should reset ComboBox.
> Steps to reproduce:
> 1. press button Some
> 2. Close popup
> 3. press button None
> At this point ComboBox should be empty. But it displays "one". Wrong.
> 4. close popup
> 5. press button None again
> Combo is empty now.
>  
>  Workaround (if any):
>  
> As possible workaround selectedIndex could do the trick, but it does not work in cached multi-state windows when creation of the Combox and connection of the dataProvider happens at different time which causes sometimes cancellation of previously happened binding.

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