/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.qpid.management.ui;

import org.eclipse.core.runtime.IPlatformRunnable;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;

/**
 * This class controls all aspects of the application's execution
 * @author Bhupendra Bhardwaj
 */
public class Application implements IPlatformRunnable
{
    private static Shell shell = null;

    /*
     * The call to createAndRunWorkbench will not return until the workbench is closed.
     * The SWT event loop and other low-level logistics are handled inside this method.
     * @see org.eclipse.core.runtime.IPlatformRunnable#run(java.lang.Object)
     */
    public Object run(Object args) throws Exception
    {
        Display display = PlatformUI.createDisplay();
        try
        {
            int returnCode = PlatformUI.createAndRunWorkbench(display,
                    new ApplicationWorkbenchAdvisor());
            if (returnCode == PlatformUI.RETURN_RESTART)
            {
                return IPlatformRunnable.EXIT_RESTART;
            }
            return IPlatformRunnable.EXIT_OK;
        } finally
        {
            display.dispose();
        }
    }

    static Shell getActiveShell()
    {
        return shell;
    }
}
