java/beans/PropertyChangeSupport.java

49  *     public void addPropertyChangeListener(PropertyChangeListener listener) {
50  *         this.pcs.addPropertyChangeListener(listener);
53  *     public void removePropertyChangeListener(PropertyChangeListener listener) {
54  *         this.pcs.removePropertyChangeListener(listener);
98      * Add a PropertyChangeListener to the listener list.
99      * The listener is registered for all properties.
100      * The same listener object may be added more than once, and will be called
102      * If {@code listener} is null, no exception is thrown and no action
105      * @param listener  The PropertyChangeListener to be added
107     public void addPropertyChangeListener(PropertyChangeListener listener) {
108         if (listener == null) {
111         if (listener instanceof PropertyChangeListenerProxy) {
113                    (PropertyChangeListenerProxy)listener;
118             this.map.add(null, listener);
123      * Remove a PropertyChangeListener from the listener list.
126      * If {@code listener} was added more than once to the same event
128      * If {@code listener} is null, or was never added, no exception is
131      * @param listener  The PropertyChangeListener to be removed
133     public void removePropertyChangeListener(PropertyChangeListener listener) {
134         if (listener == null) {
137         if (listener instanceof PropertyChangeListenerProxy) {
139                     (PropertyChangeListenerProxy)listener;
144             this.map.remove(null, listener);
184      * Add a PropertyChangeListener for a specific property.  The listener
187      * The same listener object may be added more than once.  For each
188      * property,  the listener will be invoked the number of times it was added
190      * If {@code propertyName} or {@code listener} is null, no
194      * @param listener  The PropertyChangeListener to be added
199                 PropertyChangeListener listener) {
200         if (listener == null || propertyName == null) {
203         listener = this.map.extract(listener);
204         if (listener != null) {
205             this.map.add(propertyName, listener);
211      * If {@code listener} was added more than once to the same event
216      * If {@code listener} is null, or was never added for the specified
220      * @param listener  The PropertyChangeListener to be removed
225                 PropertyChangeListener listener) {
226         if (listener == null || propertyName == null) {
229         listener = this.map.extract(listener);
230         if (listener != null) {
231             this.map.remove(propertyName, listener);
340             for (PropertyChangeListener listener : listeners) {
341                 listener.propertyChange(event);
481                 for (PropertyChangeListener listener : entry.getValue().getPropertyChangeListeners()) {
482                     this.map.add(entry.getKey(), listener);
536          * @param listener  the listener to process events
540         protected PropertyChangeListener newProxy(String name, PropertyChangeListener listener) {
541             return new PropertyChangeListenerProxy(name, listener);
547         public PropertyChangeListener extract(PropertyChangeListener listener) {
548             while (listener instanceof PropertyChangeListenerProxy) {
549                 listener = ((PropertyChangeListenerProxy) listener).getListener();
551             return listener;