/*

  * 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.renderer.layout.impl;

 import org.eclipse.swt.widgets.Layout;

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

 import org.seasar.uruma.component.LayoutDataInfo;

 import org.seasar.uruma.component.LayoutInfo;

 import org.seasar.uruma.component.UIComponent;

 import org.seasar.uruma.renderer.RendererSupportUtil;

 import org.seasar.uruma.renderer.layout.LayoutSupport;

 import org.seasar.uruma.util.ClassUtil;

 /**

  * 汎用的な {@link LayoutSupport} の実装クラスです。

  * 

  * @author y-komori

  */

 public class GenericLayoutSupport implements LayoutSupport {

     private Class<? extends Layout> layoutClass;

     private Class<? extends Object> layoutDataClass;

     /**

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

      * 

      * @param layoutClass

      *            {@link Layout} クラス

      * @param layoutDataClass

      *            レイアウトデータクラス

      */

     public GenericLayoutSupport(final Class<? extends Layout> layoutClass,

             final Class<? extends Object> layoutDataClass) {

         this.layoutClass = layoutClass;

         this.layoutDataClass = layoutDataClass;

     }

     public Layout createLayout() {

         return ClassUtil.newInstance(layoutClass);

     }

     public Layout createLayout(final LayoutInfo<?> layoutInfo) {

         Layout layout = createLayout();

         RendererSupportUtil.setAttributes(layoutInfo, layout, SetTiming.RENDER);

         return layout;

     }

     public Object createLayoutData() {

         if (layoutDataClass != null) {

             return ClassUtil.newInstance(layoutDataClass);

         } else {

             return null;

         }

     }

     public Object createLayoutData(final UIComponent uiComponent,

             final LayoutDataInfo layoutDataInfo) {

         if (layoutDataClass != null) {

             Object layoutData = createLayoutData();

             RendererSupportUtil.setAttributes(layoutDataInfo, layoutData,

                     SetTiming.RENDER);

             return layoutData;

         } else {

             return null;

         }

     }

 }