| // Copyright 2007, 2008, 2010 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.internal.services; |
| |
| import org.apache.tapestry5.ComponentResources; |
| import org.apache.tapestry5.internal.structure.Page; |
| import org.apache.tapestry5.runtime.Component; |
| import org.apache.tapestry5.runtime.RenderCommand; |
| import org.apache.tapestry5.services.Ajax; |
| import org.apache.tapestry5.services.ComponentEventResultProcessor; |
| |
| import java.io.IOException; |
| |
| /** |
| * Performs a partial page render based on a root component. If the component is actually a page, |
| * it will send an JSON reponse to rediret to the page. |
| */ |
| @SuppressWarnings("all") |
| public class AjaxComponentInstanceEventResultProcessor implements ComponentEventResultProcessor<Component> |
| { |
| private final RequestPageCache cache; |
| |
| private final ComponentEventResultProcessor masterProcessor; |
| |
| public AjaxComponentInstanceEventResultProcessor(RequestPageCache cache, @Ajax |
| ComponentEventResultProcessor masterProcessor) |
| { |
| this.cache = cache; |
| this.masterProcessor = masterProcessor; |
| } |
| |
| public void processResultValue(Component value) throws IOException |
| { |
| ComponentResources resources = value.getComponentResources(); |
| |
| boolean isPage = value == resources.getPage(); |
| |
| String pageName = resources.getPageName(); |
| |
| if (isPage) |
| { |
| // This will ultimately send a JSON response to redirect to the page |
| |
| masterProcessor.processResultValue(pageName); |
| return; |
| } |
| |
| // Otherwise, a component within a page. Components are transformed to implement RenderCommand, but if we just |
| // pass the component itself to the master processor, we'll get in a loop, so we instead |
| // pass the ComponentPageElement (which implements RenderCommand as well). |
| |
| Page page = cache.get(pageName); |
| |
| String nestedId = resources.getNestedId(); |
| |
| RenderCommand command = page.getComponentElementByNestedId(nestedId); |
| |
| masterProcessor.processResultValue(command); |
| } |
| } |