[kepler-dev] [Bug 4171] New: - dragging actor to canvas then back to component tree area gives NPE

[bugzilla-daemon at ecoinformatics.org]

http://bugzilla.ecoinformatics.org/show_bug.cgi?id=4171

           Summary: dragging actor to canvas then back to component tree
                    area gives NPE
           Product: Kepler
           Version: 1.x dev
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: interface
        AssignedTo: barseghian at nceas.ucsb.edu
        ReportedBy: barseghian at nceas.ucsb.edu
         QAContact: kepler-dev at kepler-project.org


I'm getting an NPE when I drag a component out to canvas, don't drop, and then
drag it back over the component tree area:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at
java.awt.dnd.DropTarget$DropTargetAutoScroller.updateRegion(DropTarget.java:668)
        at
java.awt.dnd.DropTarget$DropTargetAutoScroller.actionPerformed(DropTarget.java:710)
        at javax.swing.Timer.fireActionPerformed(Timer.java:271)
        at javax.swing.Timer$DoPostEvent.run(Timer.java:201)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
        at
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
        at
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)