/*

  * 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.util;

 import org.eclipse.swt.widgets.Display;

 import org.eclipse.swt.widgets.Shell;

 import org.seasar.framework.container.S2Container;

 import org.seasar.framework.container.factory.SingletonS2ContainerFactory;

 import org.seasar.uruma.context.ApplicationContext;

 import org.seasar.uruma.context.WidgetHandle;

 import org.seasar.uruma.context.WindowContext;

 import org.seasar.uruma.core.UrumaConstants;

 import org.seasar.uruma.rcp.UrumaService;

 import org.seasar.uruma.rcp.util.UrumaServiceUtil;

 /**

  * {@link Shell} に関するユーティリティクラスです。<br />

  * 

  * @author y-komori

  */

 public class ShellUtil {

     /**

      * 現在のウィンドウの {@link Shell} オブジェクトを返します。<br />

      * 

      * @return {@link Shell} オブジェクト

      */

     public static Shell getShell() {

         UrumaService service = UrumaServiceUtil.getService();

         if (service != null) {

             return service.getWorkbench().getActiveWorkbenchWindow().getShell();

         } else {

             S2Container container = SingletonS2ContainerFactory.getContainer();

             ApplicationContext context = (ApplicationContext) container

                     .getComponent(ApplicationContext.class);

             WindowContext wContext = context.getWindowContexts().iterator()

                     .next();

             WidgetHandle handle = wContext

                     .getWidgetHandle(UrumaConstants.SHELL_CID);

             if (handle != null) {

                 return handle.<Shell> getCastWidget();

             } else {

                 return Display.getCurrent().getActiveShell();

             }

         }

     }

 }