package org.kuali.student.lum.lu.ui.main.client.controllers;

 import org.kuali.student.common.ui.client.configurable.mvc.LayoutController;

 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.View;

 import org.kuali.student.common.ui.client.mvc.events.LogoutEvent;

 import org.kuali.student.common.ui.client.mvc.events.LogoutHandler;

 import org.kuali.student.lum.lu.ui.main.client.LUMMainEntryPoint;

 import com.google.gwt.user.client.Window;

 import com.google.gwt.user.client.ui.ComplexPanel;

 import com.google.gwt.user.client.ui.FlowPanel;

 import com.google.gwt.user.client.ui.Widget;

 /**

  * The top level application controller for the LUM application.  All other views are part of this controller

  * or its children.  This controller provides the very basic layout of the app and includes the header and

  * the main content panel.  The header stays in the same location for all screens of KS.

  * 

  * <br> This controller contains one child view, the home view (HomeController).

  * @author Kuali Student Team

  * @see HomeController

  * @see LUMMainEntryPoint

  */

 public class ApplicationController extends LayoutController{

         public static enum AppViews{HOME}

         public static FlowPanel contentPanel = new FlowPanel();

         public FlowPanel container = new FlowPanel();

         public ApplicationController(String controllerId, Widget header) {

                 super(controllerId);

                 this.init(header);

                 this.setupViews();

                 this.addHandlers();

         }

         private void init(Widget header){

                 container.add(header);

                 container.add(contentPanel);

                 contentPanel.addStyleName("app-content");

                 container.addStyleName("app-wrap");

                 this.initWidget(container);

         }

         private void addHandlers(){

                 addApplicationEventHandler(LogoutEvent.TYPE, new LogoutHandler() {

                         public void onLogout(LogoutEvent event) {

                                 Window.Location.assign("/j_spring_security_logout");

                         }

                 });

         }

         private void setupViews(){

                 //if a configurer pattern makes sense here this is where it would be called

                 HomeController home = new HomeController(this, "Home", 

                                 AppViews.HOME);

                 this.addView(home);

                 this.setDefaultView(AppViews.HOME);

         }

         @Override

         public void updateModel() {

                 //Does nothing, no model needed here

         }

         @Override

         protected void hideView(View view) {

                 contentPanel.clear();

         }

         @Override

         protected void renderView(View view) {

                 contentPanel.add(view.asWidget());

         }

         public static ComplexPanel getApplicationViewContainer(){

                 return contentPanel;

         }

         @Override

         public void showDefaultView(Callback<Boolean> onReadyCallback) {

                 super.showView(AppViews.HOME);

                 if(this.getCurrentView() instanceof Controller){

                         ((Controller) this.getCurrentView()).showDefaultView(onReadyCallback);

                 }

                 else{

                         onReadyCallback.exec(true);

                 }

         }

 }