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From "Noel Grandin (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (PIVOT-814) TextArea#getText throws IndexOutOfBoundsException when called from TextChanged method under setText
Date Wed, 02 Nov 2011 11:37:32 GMT

     [ https://issues.apache.org/jira/browse/PIVOT-814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Noel Grandin resolved PIVOT-814.
--------------------------------

    Resolution: Fixed

Fixed in rev 1196545 
                
> TextArea#getText throws IndexOutOfBoundsException when called from TextChanged method
under setText
> ---------------------------------------------------------------------------------------------------
>
>                 Key: PIVOT-814
>                 URL: https://issues.apache.org/jira/browse/PIVOT-814
>             Project: Pivot
>          Issue Type: Bug
>          Components: wtk
>    Affects Versions: 2.0
>            Reporter: Bill van Melle
>            Assignee: Noel Grandin
>            Priority: Minor
>             Fix For: 2.0.1
>
>
> Within the textChanged listener on my TextArea, I (naturally) call getText. This works
fine if textChanged was called as a result of typing into the TextArea.  But if it was fired
because of a call to setText elsewhere in my program, getText throws IndexOutOfBoundsException.
 The stack looks like this:
> ArrayList<T>.verifyIndexBounds(int, int, int) line: 577	
> ArrayList<T>.get(int) line: 346	
> TextArea.getParagraphAt(int) line: 853	
> TextArea.getText(int, int) line: 632	
> TextArea.getText() line: 606	
> <mycode>$2.textChanged(TextArea) line: 122	
> TextArea$TextAreaContentListenerList.textChanged(TextArea) line: 518	
> TextArea$ParagraphSequence.remove(int, int) line: 421	
> TextArea.setText(Reader) line: 722	
> TextArea.setText(String) line: 667	
> My workaround is to check for getCharacterCount() being positive before calling getText.
> Here's a test case:
> <Window title="Empty text area bug" maximized="true"
>   xmlns:bxml="http://pivot.apache.org/bxml"
>   xmlns="org.apache.pivot.wtk">
>   <BoxPane orientation="vertical" styles="{fill:true}">
>     <PushButton buttonData="Set text">
>       <buttonPressListeners>
>         function buttonPressed(button) {
>         textArea.setText("This is some text");
>         }
>       </buttonPressListeners>
>     </PushButton>
>     <TextArea bxml:id="textArea">
>       <textAreaContentListeners>
>         function textChanged(textArea) {
>         importPackage(org.apache.pivot.wtk); 
>         Alert.alert(MessageType.INFO, "Text is " + textArea.getText(), textArea.getWindow());
>         }
>       </textAreaContentListeners>          
>     </TextArea>
>   </BoxPane>
> </Window>

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