/*****************************************************************************
 * Copyright (c) 2014, 2017 CEA LIST.
 *
 *
 * 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:
 *  Patrick Tessier (CEA LIST) patrick.tessier@cea.fr - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.revision.tool.advice;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.IdentityCommand;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest;
import org.eclipse.papyrus.infra.emf.gmf.command.EMFtoGMFCommandWrapper;
import org.eclipse.papyrus.revision.tool.command.PreventRemoveCommand;
import org.eclipse.papyrus.revision.tool.ui.ReviewsEditor;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;

/**
 * The purpose of this advice is to prevent remove during the running of the revision mode
 * When the remove is done during the activation of the revision model, a diff and a review are created in the review model
 */
public class AdviceRemove extends AbstractEditHelperAdvice {


	@Override
	protected ICommand getAfterDestroyElementCommand(DestroyElementRequest request) {
		final IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().findView("org.eclipse.papyrus.revisiontool.commentview");
		if (part instanceof ReviewsEditor) {
			EObject origin= (EObject)request.getParameter(DestroyElementRequest.INITIAL_ELEMENT_TO_DESTROY_PARAMETER);
			if(origin!=null && origin.equals(request.getElementToDestroy())) {
				PreventRemoveCommand prc = new PreventRemoveCommand(request.getEditingDomain(), request.getElementToDestroy());
				CompositeCommand compositeCommand = new CompositeCommand("remove");
				compositeCommand.add(new EMFtoGMFCommandWrapper(prc));

				// compositeCommand.add(UnexecutableCommand.INSTANCE);
				return compositeCommand;
			}
		}
		return IdentityCommand.INSTANCE;
	}

}