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[Bug 605947] Re: Right click on workspace after deleting a node throws "node can't be null"

To: gephi.team@xxxxxxxxxxxxxxxxxxx
From: Mathieu Bastian <mathieu.bastian@xxxxxxxxx>
Date: Fri, 16 Jul 2010 13:13:40 -0000
Reply-to: Bug 605947 <605947@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: gephi
       Status: Confirmed => Fix Committed

** Changed in: gephi/0.7
       Status: Confirmed => Fix Committed

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Right click on workspace after deleting a node throws "node can't be null"
https://bugs.launchpad.net/bugs/605947
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Team, which is subscribed to 0.7.

Status in Gephi - Network exploration and manipulation: Fix Committed
Status in Gephi 0.7 series: Fix Committed

Bug description:
Way to reproduce:
* Launch Gephi
* Start a new project
* Add a node using the node pencil
* Using the Rectangle Selection, select the node, Right click, Delete and yes to proceed
* Right click on the empty workspace

java.lang.IllegalArgumentException: node can't be null
	at org.gephi.graph.dhns.graph.AbstractGraphImpl.checkNode(AbstractGraphImpl.java:120)
	at org.gephi.graph.dhns.graph.HierarchicalGraphImpl.getDescendantCount(HierarchicalGraphImpl.java:271)
	at org.gephi.visualization.bridge.DHNSEventBridge.canExpand(DHNSEventBridge.java:80)
	at org.gephi.visualization.apiimpl.GraphContextMenu.getMenu(GraphContextMenu.java:77)
	at org.gephi.visualization.swing.StandardGraphIO.mouseClicked(StandardGraphIO.java:193)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
	at java.awt.Component.processMouseEvent(Component.java:6266)
	at java.awt.Component.processEvent(Component.java:6028)
	at java.awt.Component.dispatchEventImpl(Component.java:4630)
	at java.awt.Component.dispatchEvent(Component.java:4460)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:137)
	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)

Seems that the error appears only if right-clicking the workspace immediately after deleting the node.