/**@class java.beans.PropertyChangeSupport implements java.io.Serializable @extends java.lang.Object This is a utility class that can be used by beans that support bound properties. It manages a list of listeners and dispatches {@link java.beans.PropertyChangeEvent}s to them. You can use an instance of this class as a member field of your bean and delegate these types of work to it. The {@link java.beans.PropertyChangeListener} can be registered for all properties or for a property specified by name. <p> Here is an example of {@code PropertyChangeSupport} usage that follows the rules and recommendations laid out in the JavaBeans™ specification: <pre> public class MyBean { private final PropertyChangeSupport pcs = new PropertyChangeSupport(this); public void addPropertyChangeListener(PropertyChangeListener listener) { this.pcs.addPropertyChangeListener(listener); } public void removePropertyChangeListener(PropertyChangeListener listener) { this.pcs.removePropertyChangeListener(listener); } private String value; public String getValue() { return this.value; } public void setValue(String newValue) { String oldValue = this.value; this.value = newValue; this.pcs.firePropertyChange("value", oldValue, newValue); } [...] } </pre> <p> A {@code PropertyChangeSupport} instance is thread-safe. <p> This class is serializable. When it is serialized it will save (and restore) any listeners that are themselves serializable. Any non-serializable listeners will be skipped during serialization. */ var PropertyChangeSupport = { /**Add a PropertyChangeListener to the listener list. The listener is registered for all properties. The same listener object may be added more than once, and will be called as many times as it is added. If <code>listener</code> is null, no exception is thrown and no action is taken. @param {Object {PropertyChangeListener}} listener The PropertyChangeListener to be added */ addPropertyChangeListener : function( ) {}, /**Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener that was registered for all properties. If <code>listener</code> was added more than once to the same event source, it will be notified one less time after being removed. If <code>listener</code> is null, or was never added, no exception is thrown and no action is taken. @param {Object {PropertyChangeListener}} listener The PropertyChangeListener to be removed */ removePropertyChangeListener : function( ) {}, /**Returns an array of all the listeners that were added to the PropertyChangeSupport object with addPropertyChangeListener(). <p> If some listeners have been added with a named property, then the returned array will be a mixture of PropertyChangeListeners and <code>PropertyChangeListenerProxy</code>s. If the calling method is interested in distinguishing the listeners then it must test each element to see if it's a <code>PropertyChangeListenerProxy</code>, perform the cast, and examine the parameter. <pre>{@code PropertyChangeListener[] listeners = bean.getPropertyChangeListeners(); for (int i = 0; i < listeners.length; i++) { if (listeners[i] instanceof PropertyChangeListenerProxy) { PropertyChangeListenerProxy proxy = (PropertyChangeListenerProxy)listeners[i]; if (proxy.getPropertyName().equals("foo")) { // proxy is a PropertyChangeListener which was associated // with the property named "foo" } } } }</pre> @see PropertyChangeListenerProxy @return {Object {java.beans.PropertyChangeListener}} all of the <code>PropertyChangeListeners</code> added or an empty array if no listeners have been added @since 1.4 */ getPropertyChangeListeners : function( ) {}, /**Add a PropertyChangeListener for a specific property. The listener will be invoked only when a call on firePropertyChange names that specific property. The same listener object may be added more than once. For each property, the listener will be invoked the number of times it was added for that property. If <code>propertyName</code> or <code>listener</code> is null, no exception is thrown and no action is taken. @param {String} propertyName The name of the property to listen on. @param {Object {PropertyChangeListener}} listener The PropertyChangeListener to be added */ addPropertyChangeListener : function( ) {}, /**Remove a PropertyChangeListener for a specific property. If <code>listener</code> was added more than once to the same event source for the specified property, it will be notified one less time after being removed. If <code>propertyName</code> is null, no exception is thrown and no action is taken. If <code>listener</code> is null, or was never added for the specified property, no exception is thrown and no action is taken. @param {String} propertyName The name of the property that was listened on. @param {Object {PropertyChangeListener}} listener The PropertyChangeListener to be removed */ removePropertyChangeListener : function( ) {}, /**Returns an array of all the listeners which have been associated with the named property. @param {String} propertyName The name of the property being listened to @return {Object {java.beans.PropertyChangeListener}} all of the <code>PropertyChangeListeners</code> associated with the named property. If no such listeners have been added, or if <code>propertyName</code> is null, an empty array is returned. @since 1.4 */ getPropertyChangeListeners : function( ) {}, /**Reports a bound property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal and non-null. <p> This is merely a convenience wrapper around the more general {@link #firePropertyChange}(PropertyChangeEvent) method. @param {String} propertyName the programmatic name of the property that was changed @param {Object {Object}} oldValue the old value of the property @param {Object {Object}} newValue the new value of the property */ firePropertyChange : function( ) {}, /**Reports an integer bound property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal. <p> This is merely a convenience wrapper around the more general {@link #firePropertyChange(String, Object, Object)} method. @param {String} propertyName the programmatic name of the property that was changed @param {Number} oldValue the old value of the property @param {Number} newValue the new value of the property */ firePropertyChange : function( ) {}, /**Reports a boolean bound property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal. <p> This is merely a convenience wrapper around the more general {@link #firePropertyChange(String, Object, Object)} method. @param {String} propertyName the programmatic name of the property that was changed @param {Boolean} oldValue the old value of the property @param {Boolean} newValue the new value of the property */ firePropertyChange : function( ) {}, /**Fires a property change event to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if the given event's old and new values are equal and non-null. @param {Object {PropertyChangeEvent}} event the {@code PropertyChangeEvent} to be fired */ firePropertyChange : function( ) {}, /**Reports a bound indexed property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal and non-null. <p> This is merely a convenience wrapper around the more general {@link #firePropertyChange}(PropertyChangeEvent) method. @param {String} propertyName the programmatic name of the property that was changed @param {Number} index the index of the property element that was changed @param {Object {Object}} oldValue the old value of the property @param {Object {Object}} newValue the new value of the property @since 1.5 */ fireIndexedPropertyChange : function( ) {}, /**Reports an integer bound indexed property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal. <p> This is merely a convenience wrapper around the more general {@link #fireIndexedPropertyChange(String, int, Object, Object)} method. @param {String} propertyName the programmatic name of the property that was changed @param {Number} index the index of the property element that was changed @param {Number} oldValue the old value of the property @param {Number} newValue the new value of the property @since 1.5 */ fireIndexedPropertyChange : function( ) {}, /**Reports a boolean bound indexed property update to listeners that have been registered to track updates of all properties or a property with the specified name. <p> No event is fired if old and new values are equal. <p> This is merely a convenience wrapper around the more general {@link #fireIndexedPropertyChange(String, int, Object, Object)} method. @param {String} propertyName the programmatic name of the property that was changed @param {Number} index the index of the property element that was changed @param {Boolean} oldValue the old value of the property @param {Boolean} newValue the new value of the property @since 1.5 */ fireIndexedPropertyChange : function( ) {}, /**Check if there are any listeners for a specific property, including those registered on all properties. If <code>propertyName</code> is null, only check for listeners registered on all properties. @param {String} propertyName the property name. @return {Boolean} true if there are one or more listeners for the given property */ hasListeners : function( ) {}, };