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From "Noel Grandin (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (PIVOT-730) NullPointerException when selecting across multiple text spans
Date Mon, 18 Apr 2011 14:46:05 GMT

     [ https://issues.apache.org/jira/browse/PIVOT-730?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Noel Grandin resolved PIVOT-730.
--------------------------------

    Resolution: Fixed
      Assignee: Noel Grandin

Fixed in rev 1094574 and rev 1094603

> NullPointerException when selecting across multiple text spans
> --------------------------------------------------------------
>
>                 Key: PIVOT-730
>                 URL: https://issues.apache.org/jira/browse/PIVOT-730
>             Project: Pivot
>          Issue Type: Bug
>          Components: wtk
>    Affects Versions: 2.0.1
>            Reporter: Bill van Melle
>            Assignee: Noel Grandin
>            Priority: Minor
>             Fix For: 2.0.1
>
>
> I'm getting frequent NullPointerException's related to selecting in a TextPane.  Here's
a simple example:
> <Window maximized="true" xmlns:bxml="http://pivot.apache.org/bxml"
>   xmlns="org.apache.pivot.wtk">
>   <TextPane>
>     <Document xmlns="org.apache.pivot.wtk.text">
>       <Paragraph>
>         <Span font="{bold:true}">Important: </Span>
>         <Span>I'm getting frequent NullPointerException's related to selecting
in a TextPane.  This is a simple example.</Span>
>         <Span font="{italic:true,size:9}"> (Today @ 12:31p)</Span>
>       </Paragraph>
>     </Document>
>   </TextPane>
> </Window>
> Reshape the window small enough that some or all of the italicized text is on at least
the third line.  Now try to select text from the plain part into the italicized part.  A typical
backtrace in my debugger reads:
> java.lang.NullPointerException
> 	at org.apache.pivot.wtk.skin.TextPaneSkin.updateSelection(TextPaneSkin.java:1138)
> 	at org.apache.pivot.wtk.skin.TextPaneSkin.selectionChanged(TextPaneSkin.java:1053)
> 	at org.apache.pivot.wtk.TextPane$TextPaneSelectionListenerList.selectionChanged(TextPane.java:190)
> 	at org.apache.pivot.wtk.TextPane.setSelection(TextPane.java:734)
> 	at org.apache.pivot.wtk.skin.TextPaneSkin.mouseMove(TextPaneSkin.java:630)
> 	at org.apache.pivot.wtk.Component$ComponentMouseListenerList.mouseMove(Component.java:433)
> 	at org.apache.pivot.wtk.Component.mouseMove(Component.java:2721)
> 	at org.apache.pivot.wtk.Container.mouseMove(Container.java:673)
> 	at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processMouseMotionEvent(ApplicationContext.java:1048)
> 	at java.awt.Component.processEvent(Unknown Source)
> 	at org.apache.pivot.wtk.ApplicationContext$DisplayHost.processEvent(ApplicationContext.java:709)
> 	at java.awt.Component.dispatchEventImpl(Unknown Source)
> 	at java.awt.Component.dispatchEvent(Unknown Source)
> 	at ... more awt stuff ...
> Similar errors occur if you start with the window wide, select text spanning the plain
and italic parts, and then reshape the window narrower.
> Related bug without a fault: with the window wide, select text spanning the bold and
plain parts.  Reshape the window narrower.  You'll get to widths where more text appears selected
than should be and/or some of the text is blank.

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