/**
    * Copyright 2010 The Kuali Foundation Licensed under the
    * Educational Community 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.osedu.org/licenses/ECL-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.kuali.student.lum.lu.ui.main.client;
  
  
  
  import org.kuali.student.common.ui.client.application.Application;
  import org.kuali.student.common.ui.client.application.ApplicationContext;
  import org.kuali.student.common.ui.client.mvc.Callback;
  import org.kuali.student.common.ui.client.mvc.Controller;
  import org.kuali.student.common.ui.client.mvc.breadcrumb.BreadcrumbManager;
  import org.kuali.student.common.ui.client.mvc.history.HistoryManager;
  import org.kuali.student.common.ui.client.service.MessagesRpcService;
  import org.kuali.student.common.ui.client.util.BrowserUtils;
  import org.kuali.student.common.ui.client.util.WindowTitleUtils;
  import org.kuali.student.common.ui.client.widgets.ApplicationPanel;
  import org.kuali.student.common.ui.client.widgets.KSFooter;
  import org.kuali.student.lum.common.client.widgets.AppLocations;
  import org.kuali.student.lum.lu.ui.main.client.controllers.ApplicationController;
  import org.kuali.student.lum.lu.ui.main.client.theme.LumTheme;
  import org.kuali.student.lum.lu.ui.main.client.widgets.ApplicationHeader;
  
  import com.google.gwt.core.client.EntryPoint;
  import com.google.gwt.core.client.GWT;
  import com.google.gwt.dom.client.StyleInjector;
  import com.google.gwt.user.client.rpc.SerializationException;
  import com.google.gwt.user.client.rpc.SerializationStreamFactory;
  import com.google.gwt.user.client.rpc.SerializationStreamReader;
  import java.util.ArrayList;
  import org.kuali.student.r2.common.messages.dto.MessageInfo;
  
  public class LUMMainEntryPoint implements EntryPoint{
  
      private ApplicationController manager = null;
      private AppLocations locations = new AppLocations();
      private ApplicationHeader header = GWT.create(ApplicationHeader.class);
      @Override
      public void onModuleLoad() {
          final ApplicationContext context = Application.getApplicationContext();
  
          final String injectString = LumTheme.INSTANCE.getLumCss().getCssString();
          StyleInjector.injectStylesheet(injectString);   
  
          try {
              loadMessages(context);                    
              loadApp(context);
          } catch (Exception e) {
              GWT.log("Error loading entrypoint", e);
          } 
      }
  
      private void initScreen(){
          manager = new ApplicationController("KualiStudent", header);
          WindowTitleUtils.setApplicationTitle(Application.getApplicationContext().getMessage("applicationName"));
          ApplicationPanel.get().add(manager);
          ApplicationPanel.get().add(new KSFooter());
          HistoryManager.bind(manager, locations);
          BreadcrumbManager.bind(manager);
          HistoryManager.processWindowLocation();
          if(manager.getCurrentView() == null)
              manager.showDefaultView(Controller.NO_OP_CALLBACK);
          header.setHeaderTitle(Application.getApplicationContext().getMessage("applicationTitleLabel"));
      }
      
      private void loadMessages(final ApplicationContext context) throws SerializationException {
          ArrayList<MessageInfo> commonMessageList =  getMsgSerializedObject("commonMessages" );
          ArrayList<MessageInfo>  luMessageList =  getMsgSerializedObject("luMessages" );
  
          context.addMessages(commonMessageList);
          context.addMessages(luMessageList);
      }
  
      @SuppressWarnings("unchecked")
      public  <T> T getMsgSerializedObject(String key ) throws SerializationException
      {
          String serialized = BrowserUtils.getString( key );
          SerializationStreamFactory ssf = GWT.create( MessagesRpcService.class); // magic
          SerializationStreamReader ssr = ssf.createStreamReader( serialized );
          T ret = (T)ssr.readObject();
          return ret;
      } 
        
      public void loadApp(final ApplicationContext context){        
          context.initializeContext(new Callback<Boolean>(){
  			@Override
  			public void exec(Boolean result) {
                 initScreen();				
 			}        	
         });
     }
 
 }