package org.kuali.student.lum.program.client.credential;
   
   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.credential.edit.CredentialEditController;
   import org.kuali.student.lum.program.client.credential.view.CredentialViewController;
   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 CredentialManager {
  
      private CredentialViewController credentialViewController;
  
      private CredentialEditController credentialEditController;
  
      private ProgramVersionsController programVersionsController;
  
      protected DataModel model;
  
      private ViewContext viewContext = new ViewContext();
  
      private static HandlerManager eventBus;
  
      public CredentialManager() {
          eventBus = new HandlerManager(null);
          model = new DataModel();
      }
  
      public CredentialViewController getBaccViewController() {
          model.resetRoot();
          if (credentialViewController == null) {
              credentialViewController = new CredentialViewController(model, viewContext, eventBus);
          }
          eventBus.fireEvent(new ProgramViewEvent());
          return credentialViewController;
      }
  
      public CredentialEditController getBaccEditController() {
          model.resetRoot();
          if (credentialEditController == null) {
              credentialEditController = new CredentialEditController(model, viewContext, eventBus);
          }
          return credentialEditController;
      }
  
      public ProgramVersionsController getProgramVersionsController() {
          if (programVersionsController == null) {
              programVersionsController = new ProgramVersionsController(model, ProgramSideBar.Type.CREDENTIAL, viewContext, eventBus);
          }
          return programVersionsController;
      }
  
      public static HandlerManager getEventBus() {
          return eventBus;
      }
  }