plugins/patterns/org.eclipse.papyrus.designer.patterns.transformations/src/org/eclipse/papyrus/designer/patterns/transformations/handlers/ApplyDesignPatternHandler.java

/*******************************************************************************
 * Copyright (c) 2018 CEA LIST
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Ansgar Radermacher (CEA LIST) <ansgar.radermacher@cea.fr> - initial API and implementation
 *
 *******************************************************************************/

package org.eclipse.papyrus.designer.patterns.transformations.handlers;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.papyrus.designer.patterns.transformations.dialogs.SelectDesignPatternDialog;
import org.eclipse.papyrus.uml.diagram.common.handlers.CmdHandler;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.uml2.uml.NamedElement;

/**
 * Implementation class for ClassAction action
 */
public class ApplyDesignPatternHandler extends CmdHandler {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
	 */
	public Object execute(ExecutionEvent event) throws ExecutionException {
		if(!(selectedEObject instanceof NamedElement)) {
			return null;
		}

		final NamedElement element = (NamedElement)selectedEObject;
		final Shell shell = Display.getCurrent().getActiveShell();

		if(element instanceof NamedElement) {
			SelectDesignPatternDialog selectDesignPattern = new SelectDesignPatternDialog(
					shell, (NamedElement)element);
			selectDesignPattern.open();
		}
		return null;
	}
}