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.core.client.GWT;
  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();
  		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 = GWT.create(HomeController.class);
  		home.init(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);
  		}
  	}
  }