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From Karel Hübl (JIRA) <j...@apache.org>
Subject [jira] [Commented] (PIVOT-888) Nullpointer Exception while editing TextArea with text property two-way bounded
Date Wed, 16 Jan 2013 09:10:12 GMT

    [ https://issues.apache.org/jira/browse/PIVOT-888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13554860#comment-13554860
] 

Karel Hübl commented on PIVOT-888:
----------------------------------

Here is trace from compiled trunk (revision 1433836):

java.lang.NullPointerException
	at org.apache.pivot.wtk.TextArea.access$500(TextArea.java:38)
	at org.apache.pivot.wtk.TextArea$Paragraph.insertText(TextArea.java:121)
	at org.apache.pivot.wtk.TextArea.insertText(TextArea.java:816)
	at org.apache.pivot.wtk.TextArea.insertText(TextArea.java:764)
	at org.apache.pivot.wtk.skin.TextAreaSkin.keyTyped(TextAreaSkin.java:945)
	at org.apache.pivot.wtk.Component$ComponentKeyListenerList.keyTyped(Component.java:533)
	at org.apache.pivot.wtk.Component.keyTyped(Component.java:2839)
	at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processKeyEvent(ApplicationContext.java:1400)
	at java.awt.Component.processEvent(Component.java:6044)
	at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processEvent(ApplicationContext.java:793)
	at java.awt.Component.dispatchEventImpl(Component.java:4630)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1850)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:712)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:990)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:855)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:676)
	at java.awt.Component.dispatchEventImpl(Component.java:4502)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Window.dispatchEventImpl(Window.java:2478)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

                
> Nullpointer Exception while editing TextArea with text property two-way bounded
> -------------------------------------------------------------------------------
>
>                 Key: PIVOT-888
>                 URL: https://issues.apache.org/jira/browse/PIVOT-888
>             Project: Pivot
>          Issue Type: Bug
>          Components: wtk
>    Affects Versions: 2.0.2
>            Reporter: Karel Hübl
>            Assignee: Roger Whitcomb
>            Priority: Trivial
>             Fix For: 2.0.3
>
>
> I am getting NullPointer exception trace printed to System.out when I edit TextArea,
which text property is two-way data bounded.
> The issue is fixed when I extend TextArea and override the setText mehtod to do nothing,
if the text equals to current text value:
> Fixed class:
> public class TwoWayBindableTextArea extends TextArea {
> 	public void setText(String text) {
> 		if (text != null && text.equals(this.getText())) {
> 			return;
> 		}
> 		super.setText(text);
> 	}
> }
> Problematic bxml:
> <Form styles="{padding:5}"
> 	xmlns="org.apache.pivot.wtk"
> 	xmlns:view="com.dirigent.gui.component"
> 	xmlns:bxml="http://pivot.apache.org/bxml" width="300" height="200">
> <Form.Section>
> 	<TextInput bxml:id="textInput" text="${textArea.text}"/>
> 	<Border>
> 		<FillPane minimumWidth="300" minimumHeight="100">
> 			<!--<view:TwoWayBindableTextArea bxml:id="textArea" text="${textInput.text}"/>-->
> 			<TextArea bxml:id="textArea" text="${textInput.text}"/>
> 		</FillPane>
> 	</Border>	
> </Form.Section>
> </Form>

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