/*******************************************************************************
 * Copyright (c) 2010 Tasktop Technologies and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.internal.builds.ui.commands;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.mylyn.builds.core.IBuildPlan;
import org.eclipse.mylyn.internal.builds.ui.actions.NewTaskFromBuildAction;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * @author Steffen Pingel
 */
public class NewTaskFromBuildHandler extends AbstractHandler {

	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection selection = HandlerUtil.getCurrentSelection(event);
		if (selection instanceof IStructuredSelection) {
			Object element = ((IStructuredSelection) selection).getFirstElement();
			if (element instanceof IBuildPlan) {
				IBuildPlan plan = (IBuildPlan) element;
				if (plan.getLastBuild() != null) {
					return NewTaskFromBuildAction.createTask(plan.getLastBuild());
				}
			}
		}
		return null;
	}
}
