ClearInstancesHandler.java

/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.service.instance.internal.handler;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;

import eu.esdihumboldt.hale.ui.service.instance.InstanceService;

/**
 * Clears the instances.
 * 
 * @author Kai Schwierczek
 */
public class ClearInstancesHandler extends AbstractHandler {

	/**
	 * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
	 */
	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		if (MessageDialog.openQuestion(HandlerUtil.getActiveShell(event), "Delete source data",
				"Do you really want to delete all source data?")) {
			InstanceService is = PlatformUI.getWorkbench().getService(InstanceService.class);
			is.clearInstances();
		}

		return null;
	}
}