/*

  * 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.context.impl;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import org.seasar.uruma.context.ApplicationContext;

 import org.seasar.uruma.context.ContextFactory;

 import org.seasar.uruma.context.WindowContext;

 import org.seasar.uruma.exception.DuplicateComponentIdException;

 import org.seasar.uruma.util.AssertionUtil;

 /**

  * {@link ApplicationContext} の実装クラスです。<br />

  * 

  * @author y-komori

  */

 public class ApplicationContextImpl implements ApplicationContext {

     private List<WindowContext> windowContextList = new ArrayList<WindowContext>();

     private Map<String, Object> valueMap = new HashMap<String, Object>();

     /**

      * {@link ApplicationContextImpl} を構築します。<br />

      * 本クラスのインスタンスを生成するには、{@link ContextFactory#createApplicationContext()}

      * メソッドを利用してください。<br />

      */

     public ApplicationContextImpl() {

         super();

     }

     /*

      * @see org.seasar.uruma.context.ApplicationContext#getWindowContext(java.lang.String)

      */

     public WindowContext getWindowContext(final String windowName) {

         for (WindowContext context : windowContextList) {

             if (context.getName().equals(windowName)) {

                 return context;

             }

         }

         return null;

     }

     /*

      * @see org.seasar.uruma.context.ApplicationContext#getWindowContexts()

      */

     public Collection<WindowContext> getWindowContexts() {

         return Collections.unmodifiableCollection(windowContextList);

     }

     /**

      * {@link WindowContext} オブジェクトを追加します。<br />

      * 

      * @param context

      *            追加する {@link WindowContext} オブジェクト

      * @throws DuplicateComponentIdException

      *             ウィンドウ名称が既に登録されている場合

      */

     public void addWindowContext(final WindowContext context) {

         AssertionUtil.assertNotNull("context", context);

         if (getWindowContext(context.getName()) == null) {

             windowContextList.add(context);

         } else {

             throw new DuplicateComponentIdException(context.getName());

         }

     }

     /**

      * {@link WindowContext} を削除します。<br />

      * 

      * @param windowName

      *            ウィンドウ名称

      */

     public void disposeWindowContext(final String windowName) {

         WindowContext context = getWindowContext(windowName);

         if (context != null) {

             windowContextList.remove(context);

         }

     }

     /*

      * @see org.seasar.uruma.context.ApplicationContext#getValue(java.lang.String)

      */

     public Object getValue(final String name) {

         return valueMap.get(name);

     }

     /*

      * @see org.seasar.uruma.context.ApplicationContext#setValue(java.lang.String,

      *      java.lang.Object)

      */

     public void setValue(final String name, final Object value) {

         AssertionUtil.assertNotEmpty("name", name);

         valueMap.put(name, value);

     }

 }