/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache 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.apache.org/licenses/LICENSE-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.apache.myfaces.orchestra.dynaForm.jsf.component;
  
  import javax.faces.component.UIComponentBase;
  import java.util.Iterator;
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  /**
   * An instance of this type can hold any number of DynaConfig components as children.
   * <p>
   * It provides simple lookup methods for finding a child DynaConfig object given
   * the name of the "for" attribute on that DynaConfig instance. 
   */
  public class DynaConfigs extends UIComponentBase
  {
      public static final String COMPONENT_TYPE = "org.apache.myfaces.orchestra.dynaForm.DynaConfigs";
      public static final String COMPONENT_FAMILY = "org.apache.myfaces.orchestra.dynaForm.DynaForm";
  
      private transient Map<String, DynaConfig> configMap = null;
  
      @Override
      public String getFamily()
      {
          return COMPONENT_FAMILY;
      }
  
      public DynaConfig getConfig(String name)
      {
          Map<String, DynaConfig> configMap = getConfigMap();
          return configMap.get(name);
      }
  
      protected Map<String, DynaConfig> getConfigMap()
      {
          if (configMap != null)
          {
              return configMap;
          }
          configMap = new LinkedHashMap<String, DynaConfig>();
  
          for (Object child : getChildren())
          {
              if (child instanceof DynaConfig)
              {
                  DynaConfig dynaConfig = (DynaConfig) child;
                  if (configMap.containsKey(dynaConfig.getFor()))
                  {
                      throw new IllegalStateException("duplicate config for property '" + dynaConfig.getFor() + "'");
                  }
                  configMap.put(dynaConfig.getFor(), dynaConfig);
              }
          }
  
          return configMap;
      }
  
      public Iterator<DynaConfig> iterator()
      {
          return getConfigMap().values().iterator();
      }
  }