/*

  * 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.component.base;

 import java.util.ArrayList;

 import java.util.List;

 import org.seasar.uruma.component.UIElement;

 import org.seasar.uruma.component.UIHasMenuCompositeComponent;

 import org.seasar.uruma.component.jface.CompositeComponent;

 import org.seasar.uruma.component.jface.MenuComponent;

 /**

  * {@link AbstractUIHasMenuCompositeComponent} を表す基底クラスです。<br />

  * RCPに定義するメニューを利用するクラスの基底クラスとして使用します。<br />

  * 

  * @author y.sugigami

  */

 public abstract class AbstractUIHasMenuCompositeComponent extends

         CompositeComponent implements UIHasMenuCompositeComponent {

     /*

      * @see org.seasar.uruma.component.UIHasMenuCompositeComponent#getMenus()

      */

     public List<MenuComponent> getMenus() {

         return getElements(MenuComponent.class);

     }

     protected <E> List<E> getElements(final Class<E> clazz) {

         List<E> result = new ArrayList<E>(getChildren().size());

         for (UIElement element : getChildren()) {

             if (clazz.isAssignableFrom(element.getClass())) {

                 result.add(clazz.cast(element));

             }

         }

         return result;

     }

 }