[richfaces-issues] [JBoss JIRA] (RF-12987) NPE in UIComponent$ComponentSystemEventListenerAdapter.processEvent when placing UITree in UIAccordionItem programmatically.
Brian Leathem (JIRA)
jira-events at lists.jboss.org
Tue Jun 11 12:03:56 EDT 2013
[ https://issues.jboss.org/browse/RF-12987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brian Leathem updated RF-12987:
-------------------------------
Fix Version/s: 5-Tracking
> NPE in UIComponent$ComponentSystemEventListenerAdapter.processEvent when placing UITree in UIAccordionItem programmatically.
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: RF-12987
> URL: https://issues.jboss.org/browse/RF-12987
> Project: RichFaces
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: component-tree
> Affects Versions: 4.3.1
> Environment: JBoss 7.1.1.Final
> Mojarra 2.1.21
> Reporter: Yuriy Granovskiy
> Fix For: 5-Tracking
>
> Attachments: trepanelnbar.zip
>
>
> NPE appears when we place UITree into UIAccordionItem programmatically.
> After postback we get:
> {panel:title NPE stacktrace}
> java.lang.NullPointerException
> javax.faces.component.UIComponent$ComponentSystemEventListenerAdapter.processEvent(UIComponent.java:2486)
> javax.faces.event.SystemEvent.processListener(SystemEvent.java:106)
> com.sun.faces.application.ApplicationImpl.processListeners(ApplicationImpl.java:2168)
> com.sun.faces.application.ApplicationImpl.invokeComponentListenersFor(ApplicationImpl.java:2116)
> com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:288)
> com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:246)
> javax.faces.component.UIComponentBase.publishAfterViewEvents(UIComponentBase.java:2201)
> javax.faces.component.UIComponentBase.doPostAddProcessing(UIComponentBase.java:1883)
> javax.faces.component.UIComponentBase.setParent(UIComponentBase.java:400)
> javax.faces.component.UIComponentBase$ChildrenList.add(UIComponentBase.java:2635)
> javax.faces.component.UIComponentBase$ChildrenList.add(UIComponentBase.java:2607)
> com.sun.faces.application.view.StateManagementStrategyImpl.restoreDynamicAdd(StateManagementStrategyImpl.java:393)
> com.sun.faces.application.view.StateManagementStrategyImpl.restoreDynamicActions(StateManagementStrategyImpl.java:314)
> com.sun.faces.application.view.StateManagementStrategyImpl.restoreView(StateManagementStrategyImpl.java:281)
> com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:188)
> com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:123)
> com.sun.faces.application.view.FaceletViewHandlingStrategy.restoreView(FaceletViewHandlingStrategy.java:453)
> com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:142)
> javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:303)
> com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:192)
> com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
> com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:116)
> com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
> javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
> {panel}
> Works fine if we store some another components(such as command button) in the accordion item. But UITree causes the problem.
> Here is a component class:
> {code:java|title TreePanelBar.java}
> @FacesComponent( value = "extended.TreePanelBar" )
> @ResourceDependencies( { @ResourceDependency( library = "org.richfaces", name = "ajax.reslib" ),
> @ResourceDependency( library = "org.richfaces", name = "base-component.reslib" ),
> @ResourceDependency( library = "org.richfaces", name = "togglePanel.js" ),
> @ResourceDependency( library = "org.richfaces", name = "accordion.js" ),
> @ResourceDependency( library = "org.richfaces", name = "AccordionItem.js" ),
> @ResourceDependency( library = "org.richfaces", name = "tree.js", target = "" ),
> @ResourceDependency( library = "", name = "richfaces-event.js", target = "" ),
> @ResourceDependency( library = "org.richfaces", name = "icons.ecss" ),
> @ResourceDependency( library = "org.richfaces", name = "accordion.ecss" ),
> @ResourceDependency( library = "org.richfaces", name = "tree.ecss", target = "" ) } )
> public class TreePanelBar extends UIAccordion implements SystemEventListener, Serializable {
> private static final long serialVersionUID = -7698934343515911542L;
> protected enum Properties {
> node
> }
> public TreePanelBar() {
> UIViewRoot root = getFacesContext().getViewRoot();
> root.subscribeToViewEvent( PreRenderViewEvent.class, this );
> }
> /** {@inheritDoc} */
> @Override
> public void processEvent( final SystemEvent event ) throws AbortProcessingException {
> if ( getChildCount() == 0 ) {
> Iterator<Object> iterator = getNode().getChildrenKeysIterator();
> while ( iterator.hasNext() ) {
> Object childKey = iterator.next();
> DataHolderTreeNodeImpl entry = (DataHolderTreeNodeImpl) getNode().getChild( childKey );
> UIAccordionItem item = (UIAccordionItem) getFacesContext().getApplication().createComponent( getFacesContext(),
> UIAccordionItem.COMPONENT_TYPE, "org.richfaces.AccordionItemRenderer" );
> item.setId( FacesContext.getCurrentInstance().getViewRoot().createUniqueId() );
> item.setHeader( ( entry.getData() ).getLabel() );
> getChildren().add( item );
> // Adding a button programmatically. Works fine without tree.
> UICommand button = (UICommand) getFacesContext().getApplication().createComponent(
> UICommand.COMPONENT_TYPE );
> button.setId(item.getId() + "_button");
> button.setValue( "Button " + item.getHeader() );
> item.getChildren().add( button );
> //Adding a tree programmatically. NPE in javax.faces.component.UIComponent$ComponentSystemEventListenerAdapter.processEvent after postback.
> UITree tree = createTree( childKey, entry );
> tree.setId( item.getId() + "_tree");
> item.getChildren().add( tree );
> }
> }
> }
> /**
> * @param childKey
> * @param entry
> * @return
> */
> private UITree createTree( final Object childKey, final DataHolderTreeNodeImpl entry ) {
> UITree tree = (UITree) getFacesContext().getApplication().createComponent( UITree.COMPONENT_TYPE );
> tree.setValue( entry );
> UITreeNode uiNode = (UITreeNode) getFacesContext().getApplication().createComponent( UITreeNode.COMPONENT_TYPE );
> uiNode.setTitle( (String) entry.getKey() );
> uiNode.setIconCollapsed( entry.getData().getIcon() );
> uiNode.setIconExpanded( entry.getData().getIcon() );
> uiNode.setId( getFacesContext().getViewRoot().createUniqueId() );
> tree.getChildren().add( uiNode );
> return tree;
> }
> /**
> * @return
> */
> public TreeNode getNode() {
> return (TreeNode) getStateHelper().eval( Properties.node );
> }
> public void setNode( final TreeNode node ) {
> getStateHelper().put( Properties.node, node );
> }
> /** {@inheritDoc} */
> @Override
> public boolean isListenerForSource( final Object source ) {
> return true;
> }
> }
> {code}
> The exception is very similar to [RF-11423|https://issues.jboss.org/browse/RF-11423]
> The listener that is trying to get processed is for PostRenderEvent which is not mensioned in the component code.
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