/* 
 * Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton, 
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS. 
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED 
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND 
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE 
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR 
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. 
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, 
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION, 
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS 
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY 
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
package org.csstudio.sds.model;


/**
 * A property change listener can be registered on a
 * <code>WidgetProperty</code> and will receive change events, when the
 * property changes.
 * 
 * 
 * @author Sven Wende
 * @version $Revision: 1.7 $
 * 
 */
public interface IPropertyChangeListener {
	/**
	 * Will be called, when the value of the property has changed.
	 * 
	 * @param oldValue
	 *            the old property value
	 * @param newValue
	 *            the new property value
	 */
	void propertyValueChanged(Object oldValue, Object newValue);

	/**
	 * Will be called, when the manual value of a property has changed.
	 * @param propertyId
     *  the property id
	 * @param manualValue
	 *            the new manual value of the property
	 */
	void propertyManualValueChanged(String propertyId, Object manualValue);

	/**
	 * Will be called if the dynamics descriptor of a property has changed.
	 * 
	 * @param dynamicsDescriptor
	 *            the new dynamics descriptor
	 */
	void dynamicsDescriptorChanged(DynamicsDescriptor dynamicsDescriptor);
}