Hi all,
if I call removeNodeFromParent for the last (and only) child node of a
parent node on second or deeper level in a TreeTable, Wicket throws an
IllegalStateException like this:
ERROR - RequestCycle - Cannot remove [MarkupContainer
[Component id = 11, page = <No Page>, path = 11.AbstractTree$TreeItem]]
from null parent!
java.lang.IllegalStateException: Cannot remove [MarkupContainer
[Component id = 11, page = <No Page>, path = 11.AbstractTree$TreeItem]]
from null parent!
at org.apache.wicket.Component.remove(Component.java:2204)
at
org.apache.wicket.markup.html.tree.AbstractTree.removeItem(AbstractTree.java:1441)
at
org.apache.wicket.markup.html.tree.AbstractTree.treeNodesRemoved(AbstractTree.java:832)
at
javax.swing.tree.DefaultTreeModel.fireTreeNodesRemoved(DefaultTreeModel.java:530)
at
javax.swing.tree.DefaultTreeModel.nodesWereRemoved(DefaultTreeModel.java:310)
at
javax.swing.tree.DefaultTreeModel.removeNodeFromParent(DefaultTreeModel.java:244)
It runs well if child node is not the last child of parent. Before
calling removeNodeFromParent() the instance method
TreeNode.getParent() always returns the valid instance of
DefaultMutableTreeNode. So tree seems to be intact for me...
Any hints?
Best regards
Hannes Schubert
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