bundles/common/org.eclipse.apogy.common.topology.ui/src/org/eclipse/apogy/common/topology/ui/commands/ToggleNodeVisibilityCommand.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency
 * 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:
 *     Pierre Allard, 
 *     Regent L'Archeveque,
<<<<<<< HEAD
 *     Sebastien Gemme
 * 
=======
 *     Sebastien Gemme  - initial API and implementation
 *     
>>>>>>> refs/heads/eclipse_pa
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.topology.ui.commands;

import java.util.Iterator;

import org.eclipse.apogy.common.converters.ApogyCommonConvertersFacade;
import org.eclipse.apogy.common.topology.Node;
import org.eclipse.apogy.common.topology.ui.NodePresentation;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;

public class ToggleNodeVisibilityCommand extends AbstractHandler implements IHandler {
	@Override
	public Object execute(ExecutionEvent event) throws ExecutionException {
		Iterator<?> selections = ((IStructuredSelection) HandlerUtil.getActiveMenuSelection(event)).iterator();

		while (selections.hasNext()) {
			Object selection = selections.next();

			if (selection instanceof Node) {
				Node node = (Node) selection;
				NodePresentation nodePresentation = (NodePresentation) ApogyCommonConvertersFacade.INSTANCE
						.convert(node, NodePresentation.class);

				if (nodePresentation != null) {
					nodePresentation.setVisible(!nodePresentation.isVisible());
				}
			}
		}
		return null;
	}
}