[jira] Assigned: (WICKET-1366) "ava.lang.IllegalStateException: No Page found for component" when collapsing nodes in a LinkTree

["Igor Vaynberg (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-1366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Igor Vaynberg reassigned WICKET-1366:
-------------------------------------

    Assignee: Matej Knopp

> "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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