/**

  * Copyright 2010 The Kuali Foundation Licensed under the

  * Educational Community License, Version 2.0 (the "License"); you may

  * not use this file except in compliance with the License. You may

  * obtain a copy of the License at

  *

  * http://www.osedu.org/licenses/ECL-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an "AS IS"

  * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

  * or implied. See the License for the specific language governing

  * permissions and limitations under the License.

  */

 package org.kuali.student.common.ui.client.mvc;

 /**

  * Passed in as an argument to Controller.requestModel Because a model may need to be initialized via an asynchronous call,

  * the request uses a callback to pass the result back to the caller

  * 

  * @author Kuali Student Team

  * @param <T>

  *            the type of model being requested

  */

 public interface ModelRequestCallback<T extends Model> {

     /**

      * Called when the model is available

      * 

      * @param model

      *            the model that was requested

      */

     public void onModelReady(T model);

     /**

      * Called when the controller was unable to provide the model

      * 

      * @param cause

      *            the exception that prevented the model from being provided, or null if the model was simply not located

      */

     public void onRequestFail(Throwable cause);

 }