/*

  * 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;

 import java.util.HashMap;

 import java.util.Map;

 import org.eclipse.swt.layout.FillLayout;

 import org.eclipse.swt.layout.GridData;

 import org.eclipse.swt.layout.GridLayout;

 import org.eclipse.swt.layout.RowData;

 import org.eclipse.swt.layout.RowLayout;

 import org.seasar.uruma.component.LayoutInfo;

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

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

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

 import org.seasar.uruma.renderer.layout.impl.GenericLayoutSupport;

 /**

  * {@link LayoutSupport} の実装クラスを取得するためのファクトリです。</br>

  * 

  * @author y-komori

  */

 public class LayoutSupportFactory {

     private static final Map<Class<? extends LayoutInfo<?>>, LayoutSupport> LAYOUT_SUPPORT_MAP = new HashMap<Class<? extends LayoutInfo<?>>, LayoutSupport>();

     static {

         addLayoutSupport(FillLayoutInfo.class, new GenericLayoutSupport(

                 FillLayout.class, null));

         addLayoutSupport(RowLayoutInfo.class, new GenericLayoutSupport(

                 RowLayout.class, RowData.class));

         addLayoutSupport(GridLayoutInfo.class, new GenericLayoutSupport(

                 GridLayout.class, GridData.class));

     }

     /**

      * {@link LayoutInfo} クラスをキーにして、レイアウトサポートクラスを取得します。<br />

      * 

      * @param layoutInfo

      *            {@link LayoutInfo} クラス。

      * @return レイアウトサポートクラス。見つからない場合は <code>null</code>

      */

     public static LayoutSupport getLayoutSupport(

             final Class<? extends LayoutInfo<?>> layoutInfo) {

         return LAYOUT_SUPPORT_MAP.get(layoutInfo);

     }

     /**

      * レイアウトサポートクラスを追加します</br>

      * 

      * @param layoutSupport

      *            レイアウトサポートクラス

      */

     public static void addLayoutSupport(

             final Class<? extends LayoutInfo<?>> layoutInfo,

             final LayoutSupport layoutSupport) {

         LAYOUT_SUPPORT_MAP.put(layoutInfo, layoutSupport);

     }

 }