I posted a bug (WICKET-2178) with a test case/source code. The last action I saw on it was it was assigned to Matej Knopp back in April.
I tested the same code against the 1.4 code and it seemed to work. Leena wrote: > > Any resolution on this? Or may be some workaround? I am facing a similar > issue, so thought this could be related. > > I am getting a NullPointerException while trying to move nodes within the > tree (ajax requests) > > Partial Stack trace: > java.lang.NullPointerException > at > org.apache.wicket.markup.html.tree.AbstractTree.treeNodesInserted(AbstractTree.java:790) > at javax.swing.tree.DefaultTreeModel.fireTreeNodesInserted(Unknown > Source) > at javax.swing.tree.DefaultTreeModel.nodesWereInserted(Unknown > Source) > at javax.swing.tree.DefaultTreeModel.insertNodeInto(Unknown Source) > > Please let me know if there is any solution/workaround to this. I am using > wicket-1.3.5. > > +Leena > > > skatz wrote: >> >> I have the same problem using 1.3.5, but not when using 1.3.3. I spent >> some time tracing the source code and it seems related to the addition of >> this line: >> >> getTreeState().selectNode((TreeNode)item.getModelObject(), false); >> >> at the very end of the function (line 835): >> >> AbstractTree.treeNodesRemoved() >> >> This line results (eventually) in a call to >> >> AbstractTree.invalidateNode() >> >> which on line 1295 calls: >> >> item.remove() >> >> which alters the state of "item" such that the call to item.remove() in >> AbstractTree.treeNodesRemoved() fails with the exception mentioned >> previously. >> >> I note that the IItemCallback() code, immediately above, calls two >> identical lines in the reverse order. I wonder reversing the later two >> would fix the problem? >> >> > > -- View this message in context: http://www.nabble.com/Illegal-State-Exception-on-DefaultTeeModel.removeNodeFromParent-tp20185042p23640768.html Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
