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https://issues.apache.org/jira/browse/WICKET-3453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12996393#comment-12996393
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Martin Grigorov commented on WICKET-3453:
-----------------------------------------
The creator and the wicket developers should be able to reopen it.
If you are not able to reopen then just comment there and I'll reopen it for
you. Don't just clone tickets without describing what is the new problem.
> Selection remains after removing collapsed node in the tree.
> ------------------------------------------------------------
>
> Key: WICKET-3453
> URL: https://issues.apache.org/jira/browse/WICKET-3453
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.4.5, 1.4.14
> Environment: tomcat 6.0.26, win 7
> Reporter: Sergey Plevko
> Assignee: Martin Grigorov
> Attachments: quickStart.ZIP
>
>
> If we fire 'node removed event' in the tree, it deselects only node which is
> currently shown (not under collapsed parent).
> There are two use cases which show correct and incorrect behavior.
> Step 1: expand ROOT
> Step 2: expand SUBTREE
> Step 3: select LEAF
> Step 4: press 'Print Selection'
> Result 4: 'Selected Node: LEAF'
> Step 5: press 'Delete SUBTREE'
> Step 6: press 'Print Selection'
> Result 6: 'Selected Node: --NO SELECTION--'
> This behavior is correct.
> Step 1: expand ROOT
> Step 2: expand SUBTREE
> Step 3: select LEAF
> Step 4: press 'Print Selection'
> Result 4: 'Selected Node: LEAF'
> -------------------------------------
> Step 5: collapse SUBTREE
> -------------------------------------
> Step 6: press 'Delete SUBTREE'
> Step 7: press 'Print Selection'
> Result 7: 'Selected Node: LEAF'
> 'LEAF' is still selected, but there is no such node in the tree model.
> Use the code below to reproduce the bug.
> Test.html
> <html>
> <body>
> <div wicket:id="tree"></div>
> <input type="button" wicket:id="printSelection" value="Print Selection">
> <input type="button" wicket:id="delete" value="Delete 'SUBTREE'">
> <br>Selected Node:
> <b><span wicket:id="selection"></span></b>
> </body>
> </html>
> Test.java
> public class Test extends WebPage {
> private DefaultMutableTreeNode subTree;
> public Test() {
> final LinkTree tree = new LinkTree("tree", createTreeModel());
> add(tree);
> final Label selection = new Label("selection");
> add(new AjaxLink("printSelection") {
> @Override
> public void onClick(AjaxRequestTarget target) {
> Collection<Object> selectedNodes =
> tree.getTreeState().getSelectedNodes();
> String selectionString = "--NO SELECTION--";
> if (selectedNodes.size() > 0) {
> selectionString =
> selectedNodes.iterator().next().toString();
> }
> selection.setDefaultModel(new Model<String>(selectionString));
> target.addComponent(selection);
> }
> });
> add(new AjaxLink("delete") {
> @Override
> public void onClick(AjaxRequestTarget target) {
> DefaultTreeModel treeModel = (DefaultTreeModel)
> tree.getModelObject();
> if(subTree != null) {
> treeModel.removeNodeFromParent(subTree);
> subTree = null;
> }
> tree.updateTree();
> }
> });
> selection.setOutputMarkupId(true);
> add(selection);
> }
> protected TreeModel createTreeModel() {
> DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("ROOT");
> subTree = new DefaultMutableTreeNode("SUBTREE");
> DefaultMutableTreeNode leaf = new DefaultMutableTreeNode("LEAF");
> rootNode.add(subTree);
> subTree.add(leaf);
> return new DefaultTreeModel(rootNode);
> }
> }
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