/*

  * 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.jface;

 import java.util.ArrayList;

 import java.util.List;

 import org.seasar.framework.util.StringUtil;

 import org.seasar.uruma.annotation.ComponentAttribute;

 import org.seasar.uruma.annotation.ComponentElement;

 import org.seasar.uruma.annotation.FieldDescription;

 import org.seasar.uruma.annotation.RenderingPolicy;

 import org.seasar.uruma.annotation.RenderingPolicy.TargetType;

 import org.seasar.uruma.component.UIComponent;

 import org.seasar.uruma.component.UIComponentContainer;

 import org.seasar.uruma.component.UIElement;

 import org.seasar.uruma.component.UIElementVisitor;

 import org.seasar.uruma.component.rcp.ViewPartComponent;

 import org.seasar.uruma.context.WidgetHandle;

 import org.seasar.uruma.context.WindowContext;

 import org.seasar.uruma.util.AssertionUtil;

 /**

  * メニュー情報を保持するためのコンポーネントです。<br />

  * 

  * @author bskuroneko

  * @author y-komori

  */

 @ComponentElement

 public class MenuComponent extends MenuItemComponent implements

         UIComponentContainer {

     /**

      * デフォルトアイテムIDです。<br />

      */

     @RenderingPolicy(targetType = TargetType.NONE)

     @ComponentAttribute

     @FieldDescription("デフォルトアイテムID")

     public String defaultItemId;

     /**

      * 可視状態です。<br />

      */

     @RenderingPolicy(targetType = TargetType.NONE)

     @ComponentAttribute

     @FieldDescription("可視状態")

     public String visible;

     /**

      * メニューの表示 X座標です。<br />

      */

     @RenderingPolicy(targetType = TargetType.NONE)

     @ComponentAttribute

     @FieldDescription("メニューの表示 X 座標")

     public String x;

     /**

      * メニューの表示 Y 座標です。<br />

      */

     @RenderingPolicy(targetType = TargetType.NONE)

     @ComponentAttribute

     @FieldDescription("メニューの表示 Y 座標")

     public String y;

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

     /*

      * @see

      * org.seasar.uruma.component.UIElementContainer#addChild(org.seasar.uruma

      * .component.UIElement)

      */

     public void addChild(final UIElement child) {

         AssertionUtil.assertNotNull("child", child);

         AssertionUtil.assertInstanceOf("child", MenuItemComponent.class, child);

         this.children.add(child);

     }

     /*

      * @see org.seasar.uruma.component.UIElementContainer#getChildren()

      */

     public List<UIElement> getChildren() {

         return this.children;

     }

     /*

      * @see

      * org.seasar.uruma.component.jface.AbstractUIComponent#doPreRender(org.

      * seasar.uruma.context.WidgetHandle,

      * org.seasar.uruma.context.WindowContext)

      */

     @Override

     protected void doPreRender(final WidgetHandle parent,

             final WindowContext context) {

         UIComponentContainer parentComponent = getParent();

         if (parentComponent instanceof WindowComponent) {

             WindowComponent windowComponent = (WindowComponent) parentComponent;

             if (StringUtil.isEmpty(windowComponent.menu)) {

                 windowComponent.menu = getId();

             }

         } else if (parentComponent instanceof ViewPartComponent) {

             // RCP版の場合は、メニューをレンダリングしない

             return;

         }

         for (UIElement child : children) {

             if (child instanceof UIComponent) {

                 ((UIComponent) child).preRender(context

                         .getWidgetHandle(getId()), context);

             }

         }

     }

     /*

      * @see

      * org.seasar.uruma.component.base.AbstractUIElement#accept(org.seasar.uruma

      * .component.UIElementVisitor)

      */

     @Override

     public void accept(final UIElementVisitor visitor) {

         visitor.visit(this);

     }

 }