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https://issues.apache.org/jira/browse/WICKET-1366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12571744#action_12571744
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Matej Knopp commented on WICKET-1366:
-------------------------------------
Hi, the check in AjaxRequestTarget is intentional. Problem is that the tree
update should be called only once during request before the actual render. I'll
see if I can do that automatic somehow.
> "ava.lang.IllegalStateException: No Page found for component" when collapsing
> nodes in a LinkTree
> -------------------------------------------------------------------------------------------------
>
> Key: WICKET-1366
> URL: https://issues.apache.org/jira/browse/WICKET-1366
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.1
> Reporter: Sebastiaan van Erk
> Assignee: Matej Knopp
>
> I'm trying to have a wicket LinkTree collapse and expand subtrees when I
> click on the respective nodes. I have the following code:
> tree = new LinkTree("tree", createTreeModel()) {
> @Override
> protected void onNodeLinkClicked(final TreeNode node, final
> BaseTree tree, final AjaxRequestTarget target) {
> if (!node.isLeaf()) {
> if (tree.getTreeState().isNodeExpanded(node)) {
> collapseAll(node);
> } else {
> expandAll(node);
> }
> tree.updateTree(target);
> } else {
>
> System.out.println(Arrays.toString(((DefaultMutableTreeNode)
> node).getUserObjectPath()));
> }
> }
> };
> with the methods expandAll/collapseAll as follows:
> protected void collapseAll(final TreeNode treeNode) {
> tree.getTreeState().collapseNode(treeNode);
> for (final Enumeration e = treeNode.children(); e.hasMoreElements();)
> {
> collapseAll((TreeNode) e.nextElement());
> }
> }
> protected void expandAll(final TreeNode treeNode) {
> tree.getTreeState().expandNode(treeNode);
> for (final Enumeration e = treeNode.children(); e.hasMoreElements();)
> {
> expandAll((TreeNode) e.nextElement());
> }
> }
> However, I keep getting the following errors (specifically, this happens when
> I collapse a subtree first, and then collapse a subtree of which the other
> subtree is a sibling):
> java.lang.IllegalStateException: No Page found for component [MarkupContainer
> [Component id = 200, page = <No Page>, path = 200.AbstractTree$TreeItem]]
> at org.apache.wicket.Component.getPage(Component.java:1639)
> at
> org.apache.wicket.ajax.AjaxRequestTarget.respondComponent(AjaxRequestTarget.java:689)
> at
> org.apache.wicket.ajax.AjaxRequestTarget.respondComponents(AjaxRequestTarget.java:605)
> at
> org.apache.wicket.ajax.AjaxRequestTarget.respond(AjaxRequestTarget.java:520)
> at
> org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:103)
> at
> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1172)
> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1241)
> at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1316)
> at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
> at
> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:354)
> at
> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:194)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> at java.lang.Thread.run(Thread.java:595)
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