org.eclipse.osbp.runtime.web.vaadin.databinding/src/org/eclipse/osbp/runtime/web/vaadin/databinding/properties/Util.java

/**
 * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *         Florian Pirchner - Initial implementation
 */

package org.eclipse.osbp.runtime.web.vaadin.databinding.properties;

import com.vaadin.data.Container;
import com.vaadin.data.Property;
import com.vaadin.ui.AbstractSelect;

// TODO: Auto-generated Javadoc
/**
 * The Class Util.
 */
public class Util {

	/**
	 * Returns the property datasource if available, the source as a property or
	 * null.
	 *
	 * @param source
	 *            the source
	 * @return the property
	 */
	@SuppressWarnings("unchecked")
	public static Property<Object> getProperty(Object source) {
		Property<Object> result = null;
		if (source instanceof Property.Viewer) {
			result = ((Property.Viewer) source).getPropertyDataSource();
		}

		if (result == null && source instanceof Property<?>) {
			result = (Property<Object>) source;
		}
		return result;
	}

	/**
	 * Returns the container datasource for the given element.
	 *
	 * @param source
	 *            the source
	 * @return the container
	 */
	public static Container getContainer(Object source) {
		// if source is AbstractSelect, then access the container by
		// #getContainerDataSource
		if (source instanceof Container && !(source instanceof AbstractSelect)) {
			return (Container) source;
		}
		Container result = null;
		if (source instanceof Container.Viewer) {
			result = ((Container.Viewer) source).getContainerDataSource();
		}

		return result;
	}

}