/**
    * 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.widgets.buttongroups;
  
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.kuali.student.common.ui.client.mvc.Callback;
  import org.kuali.student.common.ui.client.widgets.KSButton;
  import org.kuali.student.common.ui.client.widgets.buttongroups.ButtonEnumerations.ButtonEnum;
  import org.kuali.student.common.ui.client.widgets.buttonlayout.ButtonLayout;
  
  import com.google.gwt.user.client.ui.Composite;
  import com.google.gwt.user.client.ui.Widget;
  
  public abstract class ButtonGroup<T extends ButtonEnum> extends Composite{
      private List<Callback<T>> callbacks = new ArrayList<Callback<T>>();
      protected Map<T, KSButton> buttonMap = new HashMap<T, KSButton>();
      protected ButtonLayout layout;
  
      public void addCallback(Callback<T> callback) {
          callbacks.add(callback);
      }
  
      public List<Callback<T>> getCallbacks() {
          return callbacks;
      }
      
      protected void sendCallbacks(T type){
          for(Callback<T> c: getCallbacks()){
              c.exec(type);
          }
      }
      
      public void setButtonText(T key, String text){
          buttonMap.get(key).setText(text);
      }
      
      public KSButton getButton(T key){
          return buttonMap.get(key);
      }
      
      /**
       * This method is optional, the button panel can be contained inside of a parent panel which
       * will limit it's maximum size.
       * 
       * This method provides an alternative, the button panel will "wrap" the content and become the
       * proper size based on maximum size of the content. 
       * 
       * @param content - the content the button panel will align itself next to
       */
      public void setContent(Widget content){
          layout.setContent(content);
      }
  }