/*******************************************************************************
 * Copyright (c) 2012, 2013 Association for Decentralized Information Management in
 * Industry THTH ry.
 * 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.g3d.property;

import java.util.Collections;
import java.util.List;

import org.simantics.g3d.property.annotations.PropertyContributor;

public class PropertyTabUtil {
	
	
	@SuppressWarnings("unchecked")
	public static List<PropertyTabContributor> getContributors(Object input) {
		PropertyTabContributorFactory factory = resolveFactory(input.getClass());
		if (factory == null)
			return Collections.EMPTY_LIST;
		return factory.getContributors(input);
	}
	
	private static PropertyTabContributorFactory resolveFactory(Class<?> clazz) {
		PropertyContributor contributor = clazz.getAnnotation(PropertyContributor.class);
		if (contributor != null)
			try {
				return contributor.value().newInstance();
			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			}
		Class<?> superClass = clazz.getSuperclass();
		if (superClass != null)
			return resolveFactory(superClass);
		return null;
	}

}