/*******************************************************************************
 * Copyright (c) 2004 - 2006 University Of British Columbia and others.
 * 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:
 *     University Of British Columbia - initial API and implementation
 *******************************************************************************/
/*
 * Created on Feb 17, 2005
 */
package org.eclipse.mylar.internal.ui.views;

import org.eclipse.jface.viewers.*;
import org.eclipse.mylar.provisional.core.IMylarElement;
import org.eclipse.mylar.provisional.core.IMylarRelation;
import org.eclipse.mylar.provisional.core.IMylarStructureBridge;
import org.eclipse.mylar.provisional.core.MylarPlugin;
import org.eclipse.mylar.provisional.ui.MylarUiPlugin;

/**
 * @author Mik Kersten
 */
public class ContextNodeOpenListener implements IOpenListener {

	private final Viewer viewer;

	public ContextNodeOpenListener(Viewer viewer) {
		this.viewer = viewer;
	}

	public void open(OpenEvent event) {
		StructuredSelection selection = (StructuredSelection) viewer.getSelection();
		Object object = selection.getFirstElement();
		IMylarElement node = null;
		if (object instanceof IMylarElement) {
			node = (IMylarElement) object;
		} else if (!(object instanceof IMylarRelation)) {
			IMylarStructureBridge bridge = MylarPlugin.getDefault().getStructureBridge(object);
			String handle = bridge.getHandleIdentifier(object);
			node = MylarPlugin.getContextManager().getElement(handle);
		}
		if (node != null)
			MylarUiPlugin.getDefault().getUiBridge(node.getContentType()).open(node);
	}
}