FBModule.java

//Copyright [2011] [Barry Books]

//   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 com.trsvax.facebook.services;

import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.ioc.Configuration;
import org.apache.tapestry5.ioc.OrderedConfiguration;
import org.apache.tapestry5.ioc.ServiceBinder;
import org.apache.tapestry5.ioc.annotations.Contribute;
import org.apache.tapestry5.json.JSONObject;
import org.apache.tapestry5.services.Environment;
import org.apache.tapestry5.services.LibraryMapping;
import org.apache.tapestry5.services.MarkupRenderer;
import org.apache.tapestry5.services.MarkupRendererFilter;
import org.apache.tapestry5.services.PartialMarkupRenderer;
import org.apache.tapestry5.services.PartialMarkupRendererFilter;
import org.apache.tapestry5.services.RequestGlobals;
import org.apache.tapestry5.services.javascript.JavaScriptSupport;
import org.apache.tapestry5.services.transform.ComponentClassTransformWorker2;
import org.slf4j.Logger;

import com.trsvax.facebook.environment.FacebookEnvironment;
import com.trsvax.facebook.environment.FacebookValues;

public class FBModule {

	public static void bind(ServiceBinder binder) {
		binder.bind(FBAsyncSupport.class,FBAsyncSupportImpl.class);
		binder.bind(FBClient.class,FBClientImpl.class);
	}

	public void contributeMarkupRenderer(OrderedConfiguration<MarkupRendererFilter> configuration, 
			final Environment environment, final FBAsyncSupport fbAsyncSupport) {
		MarkupRendererFilter documentLinker = new MarkupRendererFilter() {
			public void renderMarkup(MarkupWriter writer, MarkupRenderer renderer) {
				environment.push(FacebookEnvironment.class, new FacebookValues());
				renderer.renderMarkup(writer);
				FacebookEnvironment facebookEnvironment = environment.pop(FacebookEnvironment.class);
				fbAsyncSupport.updateDocument(facebookEnvironment,writer.getDocument());
			}
		};
		configuration.add("FBAsync", documentLinker,"after:JavaScriptSupport");
	}

	public void contributePartialMarkupRenderer(
			OrderedConfiguration<PartialMarkupRendererFilter> configuration,
			final Logger logger, final Environment environment,
			final RequestGlobals requestGlobals) {
		PartialMarkupRendererFilter documentLinker = new PartialMarkupRendererFilter() {

			public void renderMarkup(MarkupWriter writer, JSONObject arg1,
					PartialMarkupRenderer renderer) {
				JavaScriptSupport javascriptSupport = environment
						.peekRequired(JavaScriptSupport.class);
				FBAsyncSupportImpl linker = new FBAsyncSupportImpl(logger,
						requestGlobals, javascriptSupport);

				environment.push(FBAsyncSupport.class, linker);

				renderer.renderMarkup(writer, arg1);

				environment.pop(FBAsyncSupport.class);
				//linker.updateDocument(writer.getDocument());
			}
		};
		configuration.add("FBAsyncLinker", documentLinker,
				"after:JavaScriptSupport");
	}

	public static void contributeComponentClassResolver(Configuration<LibraryMapping> configuration) {
		configuration.add(new LibraryMapping("fb","com.trsvax.facebook"));
	}
	
	@Contribute(ComponentClassTransformWorker2.class)   
	public static void  provideWorkers(OrderedConfiguration<ComponentClassTransformWorker2> workers) {    
		workers.addInstance("FBSubscribeWorker", FBSubscribeWorker.class);
	} 

}