/*
    * Copyright 2007-2009 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.opensource.org/licenses/ecl2.php
    *
   * 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.rice.kns.util;
  
  import org.apache.struts.action.ActionMessage;
  import org.apache.struts.action.ActionMessages;
  import org.kuali.rice.krad.util.ErrorMessage;
  import org.kuali.rice.krad.util.MessageMap;
  
  import java.io.Serializable;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Set;
  
  /**
   * An adapter whose subclasses will make either an {@link org.kuali.rice.krad.util.MessageMap}'s warning or info messages available to the JSP layer
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public abstract class MessageContainer implements Serializable {
  	private MessageMap errorMap;
  	
  	protected MessageContainer(MessageMap errorMap) {
  		this.errorMap = errorMap;
  	}
  	
  	protected MessageMap getMessageMap() {
  		return errorMap;
  	}
  	
      public ActionMessages getRequestMessages() {
          ActionMessages requestErrors = new ActionMessages();
          for (Iterator<String> iter = getMessagePropertyNames().iterator(); iter.hasNext();) {
              String property = iter.next();
              List errorList = (List) getMessagesForProperty(property);
  
              for (Iterator iterator = errorList.iterator(); iterator.hasNext();) {
                  ErrorMessage errorMessage = (ErrorMessage) iterator.next();
  
                  // add ActionMessage with any parameters
                  requestErrors.add(property, new ActionMessage(errorMessage.getErrorKey(), errorMessage.getMessageParameters()));
              }
          }
          return requestErrors;
      }
      
      public abstract int getMessageCount();
      
      public abstract List<String> getMessagePropertyList();
  
      protected abstract Set<String> getMessagePropertyNames();
      
      protected abstract List getMessagesForProperty(String propertyName);
  }