/*******************************************************************************
 * Copyright (C) 2017 Fondazione Bruno Kessler.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 * 
 * Contributors:
 *     Alberto Debiasi - initial API and implementation
 ******************************************************************************/
package org.polarsys.chess.contracts.hierarchicalContractView.listener;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.papyrus.infra.core.listenerservice.IPapyrusListener;
import org.eclipse.papyrus.uml.tools.model.UmlModel;
import org.eclipse.papyrus.uml.tools.model.UmlUtils;
import org.eclipse.uml2.uml.Element;
import org.polarsys.chess.contracts.hierarchicalContractView.view.CustomHierarchicalView;

import eu.fbk.eclipse.standardtools.hierarchicalContractView.core.view.HierarchicalView;

import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.Workbench;

public class PapyrusListener implements IPapyrusListener {

	private UmlModel prevModelID;

	public PapyrusListener() {
	}

	@Override
	public void notifyChanged(Notification notification) {

		Object notifier = notification.getNotifier();

		if (notifier instanceof Element) {
			if (Workbench.getInstance() != null){
			IWorkbench workbench = PlatformUI.getWorkbench();
			IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
			IViewPart modelExplorerViewPart;

			if ((window != null) && (window.getActivePage() != null)) {
				modelExplorerViewPart = window.getActivePage().findView(CustomHierarchicalView.View_ID);

				if (modelExplorerViewPart != null && modelExplorerViewPart instanceof HierarchicalView) {

					UmlModel modelID = UmlUtils.getUmlModel();

					if (modelID != prevModelID) {
						HierarchicalView view = (HierarchicalView) modelExplorerViewPart;
						view.updateView();
						prevModelID = modelID;
					}
				}
			}
			}
		}
	}
}