package org.kuali.student.lum.program.client.core;

 import com.google.gwt.event.shared.HandlerManager;

 import org.kuali.student.common.ui.client.application.ViewContext;

 import org.kuali.student.common.ui.client.mvc.DataModel;

 import org.kuali.student.lum.program.client.core.edit.CoreEditController;

 import org.kuali.student.lum.program.client.core.view.CoreViewController;

 import org.kuali.student.lum.program.client.events.ProgramViewEvent;

 import org.kuali.student.lum.program.client.versions.ProgramVersionsController;

 import org.kuali.student.lum.program.client.widgets.ProgramSideBar;

 /**

  * @author Igor

  */

 public class CoreManager {

     private CoreViewController viewController;

     private CoreEditController editController;

     private ProgramVersionsController programVersionsController;

     protected DataModel model;

     private ViewContext viewContext = new ViewContext();

     private static HandlerManager eventBus;

     public CoreManager() {

         eventBus = new HandlerManager(null);

         model = new DataModel();

     }

     public CoreViewController getViewController() {

         model.resetRoot();

         if (viewController == null) {

             viewController = new CoreViewController(model, viewContext, eventBus);

         }

         eventBus.fireEvent(new ProgramViewEvent());

         return viewController;

     }

     public CoreEditController getEditController() {

         model.resetRoot();

         if (editController == null) {

             editController = new CoreEditController(model, viewContext, eventBus);

         }

         return editController;

     }

     public ProgramVersionsController getProgramVersionsController() {

         if (programVersionsController == null) {

             programVersionsController = new ProgramVersionsController(model, ProgramSideBar.Type.CORE, viewContext, eventBus);

         }

         return programVersionsController;

     }

     public static HandlerManager getEventBus() {

         return eventBus;

     }

 }