/**

  * 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;

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

 /**

  * This interface should be implemented by widget that will not be ready for  

  * use until some action is completed (eg. load data from async callback) 

  * 

  * @author Kuali Student Team

  *

  */

 public interface HasWidgetReadyCallback {

     /** 

      * This method sets an initialized state of the widget

      * 

      * @param initialized

      */

     public void setInitialized(boolean initialized);

     /** 

      * This method can be used to query if a widget has been initialized.

      * 

      * @return

      */

     public boolean isInitialized();

     /** 

      * This method can be used to register a callback to be executed when a widget

      * has been initialized.  The callback should be unregistered by the 

      * implementing widget after execution. 

      * 

      * @param callback

      */

     public void addWidgetReadyCallback(Callback<Widget> callback);    

 }