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

 import com.google.gwt.event.dom.client.ClickEvent;

 import com.google.gwt.event.dom.client.ClickHandler;

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

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

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

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

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

 import org.kuali.student.common.assembly.data.Data;

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

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

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

 import org.kuali.student.common.ui.client.mvc.history.HistoryManager;

 import org.kuali.student.lum.common.client.widgets.AppLocations;

 import org.kuali.student.lum.program.client.ProgramConstants;

 import org.kuali.student.lum.program.client.ProgramController;

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

 import org.kuali.student.lum.program.client.major.MajorController;

 import org.kuali.student.lum.program.client.properties.ProgramProperties;

 import org.kuali.student.lum.program.client.rpc.AbstractCallback;

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

 import java.util.List;

 /**

  * @author Igor

  */

 public abstract class VariationController extends ProgramController {

     private String parentName;

     protected MajorController majorController;

     /**

      * Constructor.

      *

      * @param programModel

      * @param eventBus

      */

     public VariationController(DataModel programModel, ViewContext viewContext, HandlerManager eventBus, MajorController majorController) {

         super("", programModel, viewContext, eventBus);

         this.parentName = majorController.getName();

         this.majorController = majorController;

         setName(getProgramName());

         sideBar = new ProgramSideBar(eventBus, ProgramSideBar.Type.MAJOR);

         sideBar.initialize(majorController);

     }

     @Override

     protected void configureView() {

         setStatus();

         super.configureView();

         setContentTitle(getProgramName());

         addContentWidget(createParentAnchor());

         addContentWidget(createCommentPanel());

     }

     private Widget createParentAnchor() {

         HorizontalPanel anchorPanel = new HorizontalPanel();

         Anchor anchor = new Anchor(parentName);

         anchor.addClickHandler(new ClickHandler() {

             @Override

             public void onClick(ClickEvent event) {

                 navigateToParent();

             }

         });

         Label parentProgram = new Label(ProgramProperties.get().variation_parentProgram());

         parentProgram.addStyleName("parentProgram");

         anchorPanel.add(parentProgram);

         anchorPanel.add(anchor);

         return anchorPanel;

     }

     protected abstract void navigateToParent();

     @Override

     public String getProgramName() {

         String name = getStringProperty(ProgramConstants.LONG_TITLE);

         if (name == null) {

             return ProgramProperties.get().variation_new();

         }

         return ProgramProperties.get().variation_title(name);

     }

     @Override

     public void collectBreadcrumbNames(List<String> names) {

         names.add(parentName + "@" + HistoryManager.appendContext(AppLocations.Locations.VIEW_PROGRAM.getLocation(), getViewContext()));

         super.collectBreadcrumbNames(names);

     }

     /**

      * Loads data model from the server.

      *

      * @param callback we have to invoke this callback when model is loaded or failed.

      */

     @Override

     protected void loadModel(final ModelRequestCallback<DataModel> callback) {

         programRemoteService.getData(getViewContext().getId(), new AbstractCallback<Data>(ProgramProperties.get().common_retrievingData()) {

             @Override

             public void onFailure(Throwable caught) {

                 super.onFailure(caught);

                 callback.onRequestFail(caught);

             }

             @Override

             public void onSuccess(Data result) {

                 super.onSuccess(result);

                 programModel.setRoot(result);

                 callback.onModelReady(programModel);

                 eventBus.fireEvent(new ModelLoadedEvent(programModel));

             }

         });

     }

 }