/*

  * 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.rcp;

 import org.eclipse.equinox.app.IApplication;

 import org.eclipse.equinox.app.IApplicationContext;

 import org.eclipse.swt.widgets.Display;

 import org.eclipse.swt.widgets.Shell;

 import org.eclipse.ui.IWorkbench;

 import org.eclipse.ui.PlatformUI;

 import org.seasar.uruma.core.UrumaConstants;

 import org.seasar.uruma.core.UrumaMessageCodes;

 import org.seasar.uruma.log.UrumaLogger;

 import org.seasar.uruma.rcp.core.UrumaBundleState;

 import org.seasar.uruma.rcp.core.UrumaBundleState.BundleState;

 import org.seasar.uruma.rcp.ui.UrumaWorkbenchAdvisor;

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

 import org.seasar.uruma.ui.dialogs.UrumaErrorDialog;

 import org.seasar.uruma.util.MessageUtil;

 /**

  * RCP 環境での Uruma ブートストラップクラスです。<br />

  * 

  * @author y-komori

  */

 public class UrumaApplication implements IApplication, UrumaMessageCodes,

         UrumaConstants {

     private static final UrumaLogger logger = UrumaLogger

             .getLogger(UrumaApplication.class);

     /*

      * @see org.eclipse.equinox.app.IApplication#start(org.eclipse.equinox.app.IApplicationContext)

      */

     public Object start(final IApplicationContext context) throws Exception {

         if (UrumaBundleState.getInstance().getUrumaBundleState() == BundleState.NOT_AVAILABLE) {

             return IApplication.EXIT_OK;

         }

         logger.log(URUMA_APPLICATION_STARTING);

         Display display = null;

         try {

             UrumaServiceUtil.getService().switchToAppClassLoader();

             display = PlatformUI.createDisplay();

             int returnCode = PlatformUI.createAndRunWorkbench(display,

                     new UrumaWorkbenchAdvisor());

             if (returnCode == PlatformUI.RETURN_RESTART) {

                 return IApplication.EXIT_RESTART;

             } else {

                 return IApplication.EXIT_OK;

             }

         } catch (Throwable ex) {

             if (display == null) {

                 display = new Display();

             }

             Shell shell = new Shell(display);

             String msg = MessageUtil.getMessageWithBundleName(

                     URUMA_MESSAGE_BASE, "RCP_EXCEPTION_OCCURED");

             UrumaErrorDialog dialog = new UrumaErrorDialog(shell, "Uruma", msg,

                     ex);

             dialog.open();

             shell.dispose();

         } finally {

             if ((display != null) && !display.isDisposed()) {

                 display.dispose();

             }

         }

         return IApplication.EXIT_OK;

     }

     /*

      * @see org.eclipse.equinox.app.IApplication#stop()

      */

     public void stop() {

         logger.log(URUMA_APPLICATION_STOPPING);

         final IWorkbench workbench = PlatformUI.getWorkbench();

         if (workbench == null)

             return;

         final Display display = workbench.getDisplay();

         display.syncExec(new Runnable() {

             public void run() {

                 if (!display.isDisposed()) {

                     workbench.close();

                 }

             }

         });

     }

 }