/*

  * Copyright 2004-2008 the Seasar Foundation and the Others.

  *

  * Licensed 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.seasar.uruma.rcp.configuration.elements;

 import java.io.Writer;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 import org.seasar.uruma.rcp.configuration.ConfigurationElement;

 import org.seasar.uruma.rcp.configuration.ConfigurationElementContainer;

 /**

  * {@link ConfigurationElementContainer} のための基底クラスです。<br />

  * 

  * @author y-komori

  */

 public abstract class AbstractConfigurationElementContainer extends

         AbstractConfigurationElement implements ConfigurationElementContainer {

     private List<ConfigurationElement> children = new ArrayList<ConfigurationElement>();

     /*

      * @see org.seasar.uruma.rcp.configuration.ConfigurationElementContainer#addElement(org.seasar.uruma.rcp.configuration.ConfigurationElement)

      */

     public void addElement(final ConfigurationElement element) {

         children.add(element);

     }

     /*

      * @see org.seasar.uruma.rcp.configuration.ConfigurationElementContainer#getElements()

      */

     public List<ConfigurationElement> getElements() {

         return Collections.unmodifiableList(children);

     }

     /*

      * @see org.seasar.uruma.rcp.configuration.elements.AbstractConfigurationElement#writeConfiguration(java.io.Writer)

      */

     @Override

     public void writeConfiguration(final Writer writer) {

         if (configurationWriter != null) {

             configurationWriter.writeStartTag(this, writer, level);

         }

         for (ConfigurationElement element : children) {

             element.setLevel(level + 1);

             element.writeConfiguration(writer);

         }

         if (configurationWriter != null) {

             configurationWriter.writeEndTag(this, writer, level);

         }

     }

 }