[ https://issues.apache.org/jira/browse/FLEX-28424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Justin Mclean updated FLEX-28424: --------------------------------- Labels: easyfix easytest (was: ) > ComboBox with requestedRowCount set has RTE when text input is cleared > ---------------------------------------------------------------------- > > Key: FLEX-28424 > URL: https://issues.apache.org/jira/browse/FLEX-28424 > Project: Apache Flex > Issue Type: Bug > Components: Spark: ComboBox > Affects Versions: Adobe Flex SDK 4.5.1 (Release) > Environment: Affected OS(s): All OS Platforms > Affected OS(s): All OS Platforms > Browser: Firefox 3.x > Language Found: English > Reporter: Adobe JIRA > Labels: easyfix, easytest > > Steps to reproduce: > 1. Create a project with the following code > <?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" > xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" > minHeight="600"> > <s:ComboBox> > <s:layout> > <s:VerticalLayout requestedRowCount="1"/> > </s:layout> > <s:dataProvider> > <s:ArrayCollection> > <fx:int>25</fx:int> > </s:ArrayCollection> > </s:dataProvider> > </s:ComboBox> > > </s:Application> > 2. Run the application and cut or select/delete the text in the text input > portion of the ComboBox. > > Actual Results: > TypeError: Error #1009: Cannot access a property or method of a null object > reference. > at > spark.components.supportClasses::DropDownListBase/http://www.adobe.com/2006/flex/mx/internal::positionIndexInView()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components\supportClasses\DropDownListBase.as:659] > at > spark.components.supportClasses::DropDownListBase/http://www.adobe.com/2006/flex/mx/internal::changeHighlightedSelection()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components\supportClasses\DropDownListBase.as:638] > at > spark.components::ComboBox/textInput_changeHandler()[E:\dev\hero_private\frameworks\projects\spark\src\spark\components\ComboBox.as:1045] > ... > > Expected Results: > No error. > > Workaround (if any): > Do not use requestedRowCount. > > Specifically the issue is that ComboBox overrides some things, but in this > particular instance, it uses the super (DropDownListBase) which tries to use > a null dataGroup. The issue is in ComboBox#textInput_changeHandler: > // Close the dropDown if we press delete or cut the selected text > if (operation is DeleteTextOperation || operation is CutOperation) > { > super.changeHighlightedSelection(CUSTOM_SELECTED_ITEM); > } > This was previously mentioned by someone else in the forums: > http://forums.adobe.com/message/3272412#3272412 > Not sure if that ever made it to a ticket though. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira