/*
 * Copyright (C) 2012 Ricardo Juan Palma Durán
 *
 * 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 jbt.tools.bteditor;


import jbt.tools.bteditor.util.StandardDialogs;

import org.eclipse.equinox.app.IApplication;
import org.eclipse.equinox.app.IApplicationContext;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;

/**
 * This class controls all aspects of the application's execution
 */
public class Application implements IApplication {
	public static final String PLUGIN_ID = "jbt.tools.bteditor";

	/*
	 * (non-Javadoc)
	 * 
	 * @seeorg.eclipse.equinox.app.IApplication#start(org.eclipse.equinox.app.
	 * IApplicationContext)
	 */
	public Object start(IApplicationContext context) throws Exception {
		Display display = PlatformUI.createDisplay();

		/*
		 * Before doing anything at all, standard nodes must be loaded. If they
		 * cannot be loaded, the application will not start.
		 */
		try {
			NodesLoader.loadStandardNodes();
			ApplicationIcons.loadIcons();
		} catch (Exception e) {
			StandardDialogs
					.exceptionDialog(
							"Could not start application",
							"There were errors while loading the set of standard nodes",
							e);
			return IApplication.EXIT_OK;
		}

		try {
			int returnCode = PlatformUI.createAndRunWorkbench(display,
					new ApplicationWorkbenchAdvisor());
			if (returnCode == PlatformUI.RETURN_RESTART)
				return IApplication.EXIT_RESTART;
			else
				return IApplication.EXIT_OK;
		} finally {
			/* Dispose loaded icons. */
			ApplicationIcons.disposeIcons();
			display.dispose();
		}

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.equinox.app.IApplication#stop()
	 */
	public void stop() {
		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();
			}
		});
	}
}