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From "Justin Mclean (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLEX-25906) ComboBox textInput not cleared when dataprovider changes
Date Thu, 12 Sep 2013 04:36:51 GMT

    [ https://issues.apache.org/jira/browse/FLEX-25906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13765154#comment-13765154
] 

Justin Mclean commented on FLEX-25906:
--------------------------------------

Confirmed still an issue in 4.10.0.
                
> ComboBox textInput not cleared when dataprovider changes
> --------------------------------------------------------
>
>                 Key: FLEX-25906
>                 URL: https://issues.apache.org/jira/browse/FLEX-25906
>             Project: Apache Flex
>          Issue Type: Bug
>          Components: Spark: ComboBox
>    Affects Versions: Adobe Flex SDK 4.1 (Release)
>         Environment: Affected OS(s): All OS Platforms
> Affected OS(s): All OS Platforms
> Browser: Firefox 3.x
> Language Found: English
>            Reporter: Adobe JIRA
>            Assignee: Justin Mclean
>              Labels: easytest
>
> Steps to reproduce:
> 1.Create a UI containing a spark ComboBox whose dataprovider can change based on user
interaction
> 2.Select an item from the combobox
> 3. Change the dataprovider for the combobox to a collection that does not contain the
selected item. For example if the selected index was 4 change the dataprovider to a collection
with a length of 3 or less.
>  
>  Actual Results: 
> The selectedIndex and selectedItem properties update as expected but the text in the
textInput still displays it's original value.
>  
>  
>  Expected Results:
> The text property of the textInput should be cleared or set to null if selectedItem is
no longer valid.
>  
>  
>  Workaround (if any):
>  
>  The problem is caused by the fact that the change to the dataprovider causes selectedItem
to become undefined before the updateLabelDisplay() method of ComboBox is called. This will
result in displayItem being undefined and thus prevent the update to textInput.text on line
677.
> The workaround is to create a component that extends ComboBox and override the commitProperties()
function. In the overridden function, check if selectedIndex == -1 and if so manually set
the text to "" before calling super.commitProperties.

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