Examples of java.beans.PropertyChangeListenerProxy

java.beans.PropertyChangeListenerProxy
A class which extends the EventListenerProxy specifically for adding a named PropertyChangeListener. Instances of this class can be added as PropertyChangeListener to an object.
If the object has a getPropertyChangeListeners() method then the array returned could be a mixture of PropertyChangeListener and PropertyChangeListenerProxy objects. @see java.util.EventListenerProxy @since 1.4

        /** {@inheritDoc} */
        public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument add method.
                addPropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
            } else {
                super.addPropertyChangeListener(new WeakPropertyChangeListener(listener));
            }
        }

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        /** {@inheritDoc} */
        public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument remove method.
                removePropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
                return;
            }
            PropertyChangeListener[] listeners = getPropertyChangeListeners();
            WeakPropertyChangeListener wpcl;
            for (int i = listeners.length - 1; i >= 0; i--) {

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        /** {@inheritDoc} */
        public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument add method.
                addPropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
            } else {
                super.addPropertyChangeListener(new WeakPropertyChangeListener(listener));
            }
        }

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        /** {@inheritDoc} */
        public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument add method.
                addPropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
            } else {
                super.addPropertyChangeListener(new WeakPropertyChangeListener(listener));
            }
        }

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        /** {@inheritDoc} */
        public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument remove method.
                removePropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
                return;
            }
            PropertyChangeListener[] listeners = getPropertyChangeListeners();
            WeakPropertyChangeListener wpcl;
            for (int i = listeners.length - 1; i >= 0; i--) {

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        /** {@inheritDoc} */
        public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
            if (listener == null)
                return;
            if (listener instanceof PropertyChangeListenerProxy) {
                PropertyChangeListenerProxy proxy =
                            (PropertyChangeListenerProxy) listener;
                // Call two argument remove method.
                removePropertyChangeListener(proxy.getPropertyName(),
                            (PropertyChangeListener) proxy.getListener());
                return;
            }
            PropertyChangeListener[] listeners = getPropertyChangeListeners();
            WeakPropertyChangeListener wpcl;
            for (int i = listeners.length - 1; i >= 0; i--) {

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   *
   * @param listener The PropertyChangeListener to be added
   */
  public void addPropertyChangeListener(PropertyChangeListener listener) {
    if (listener instanceof PropertyChangeListenerProxy) {
      PropertyChangeListenerProxy proxy = (PropertyChangeListenerProxy) listener;
      addPropertyChangeListener(proxy.getPropertyName(), (PropertyChangeListener) proxy.getListener());
    }
    else {
      if (listeners == null) {
        listeners = new EventListenerList();
      }

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   *
   * @param listener The PropertyChangeListener to be removed
   */
  public void removePropertyChangeListener(PropertyChangeListener listener) {
    if (listener instanceof PropertyChangeListenerProxy) {
      PropertyChangeListenerProxy proxy = (PropertyChangeListenerProxy) listener;
      removePropertyChangeListener(proxy.getPropertyName(), (PropertyChangeListener) proxy.getListener());
    }
    else {
      if (listeners == null) {
        return;
      }

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      while (iterator.hasNext()) {
        String key = (String) iterator.next();
        PropertyChangeSupport child = (PropertyChangeSupport) children.get(key);
        PropertyChangeListener[] childListeners = child.getPropertyChangeListeners();
        for (int index = childListeners.length - 1; index >= 0; index--) {
          returnList.add(new PropertyChangeListenerProxy(key, childListeners[index]));
        }
      }
    }
    return (PropertyChangeListener[]) returnList.toArray(new PropertyChangeListener[returnList.size()]);
  }

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        public int findMyProxy(final Object[] listenersArray, final String property) {
            int found = 0;
            for (int i = 0; i < listenersArray.length; i++) {
                Object curListener = listenersArray[i];
                if (curListener instanceof PropertyChangeListenerProxy) {
                    PropertyChangeListenerProxy proxy = (PropertyChangeListenerProxy) curListener;
                    if (proxy.getListener() == this && proxy.getPropertyName().equals(property)) {
                        found++;
                    }
                }
            }
            return found;

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