/*****************************************************************************
 * Copyright (c) 2019 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:
 *  Xavier Le Pallec (for CEA LIST) xlepallec@lilo.org - Bug 558456
 *
 *****************************************************************************/

package org.eclipse.papyrus.uml.diagram.clazz.lf.classtextualedition.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.gmf.runtime.notation.View;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.papyrus.uml.architecture.UMLDiagramTypes;
import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackagePackageableElementCompartmentEditPart;
import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackagePackageableElementCompartmentEditPartCN;
import org.eclipse.papyrus.uml.diagram.clazz.lf.classtextualedition.swt.SwtFactory;
//import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ClassEditPart;
import org.eclipse.papyrus.uml.diagram.common.editparts.ClassEditPart;
import org.eclipse.ui.handlers.HandlerUtil;

public class ClassEditionHandler extends AbstractHandler {

	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		ISelection selection = HandlerUtil.getCurrentSelection(event);
		if (!selection.isEmpty() && selection instanceof IStructuredSelection) {
			ClassEditPart selectedUmlClass = getPossibleSelectedUmlClass(IStructuredSelection.class.cast(selection));
			if (selectedUmlClass != null) {
				SwtFactory.getInstance().createUmlClassHTMLEditionDialog(selectedUmlClass);
			}
		}
		return null;
	}

	protected ClassEditPart getPossibleSelectedUmlClass(IStructuredSelection structuredSelection) {
		if (structuredSelection.size() == 1) {
			Object firstSelectedElement = structuredSelection.getFirstElement();
			if (firstSelectedElement instanceof ClassEditPart) {
				ClassEditPart classEditPart = ClassEditPart.class.cast(firstSelectedElement);
				if (classEditPart.getParent().getModel() instanceof View) {
					View parentEditPart = View.class.cast(classEditPart.getParent().getModel());
					if (parentEditPart.getType().equals(UMLDiagramTypes.CLASS_DIAGRAM) ||
							parentEditPart.getType().equals(PackagePackageableElementCompartmentEditPart.VISUAL_ID) ||
							parentEditPart.getType().equals(PackagePackageableElementCompartmentEditPartCN.VISUAL_ID)) {
						return classEditPart;
					}
				}
			}
		}
		return null;
	}

}