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

 import com.google.gwt.core.client.GWT;

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

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

 import org.kuali.student.common.ui.client.widgets.progress.BlockingTask;

 import org.kuali.student.common.ui.client.widgets.progress.KSBlockingProgressIndicator;

 /**

  * @author Igor

  */

 public class AbstractCallback<T> extends KSAsyncCallback<T> {

     private BlockingTask loadingTask;

     public AbstractCallback() {

         this("Loading");

     }

     public AbstractCallback(String text) {

         loadingTask = new BlockingTask(text);

         KSBlockingProgressIndicator.addTask(loadingTask);

     }

     @Override

         public void onFailure(Throwable caught) {

                 super.onFailure(caught);

         }

         @Override

     public void handleFailure(Throwable caught) {

         KSBlockingProgressIndicator.removeTask(loadingTask);

         Window.alert("Call failed on server.");

         GWT.log("Exception:", caught);

     }

     @Override

     public void onSuccess(T result) {

         KSBlockingProgressIndicator.removeTask(loadingTask);

     }

 }