diff options
Diffstat (limited to 'libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java')
| -rw-r--r-- | libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java | 278 |
1 files changed, 6 insertions, 272 deletions
diff --git a/libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java b/libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java index 7e8ff0dc2e9..7fb8aa67d7a 100644 --- a/libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java +++ b/libjava/classpath/javax/swing/event/SwingPropertyChangeSupport.java @@ -1,5 +1,5 @@ /* SwingPropertyChangeSupport.java -- - Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc. + Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. @@ -39,48 +39,24 @@ package javax.swing.event; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; -import java.beans.PropertyChangeListenerProxy; import java.beans.PropertyChangeSupport; -import java.util.ArrayList; -import java.util.EventListener; -import java.util.Hashtable; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.Set; /** * Provides a mechanism for registering {@link PropertyChangeListener}s and * forwarding {@link PropertyChangeEvent}s to those listeners. - * + * + * As of JDK1.5 this class is no longer in use. Use + * {@link PropertyChangeSupport} instead. + * * @author Andrew Selkirk */ public final class SwingPropertyChangeSupport - extends PropertyChangeSupport + extends PropertyChangeSupport { private static final long serialVersionUID = 7162625831330845068L; /** - * Storage for the listeners that are not linked to a specific property. - */ - private transient EventListenerList listeners; - - /** - * Storage for the listeners that are linked (by name) to a specific property. - * The hash table maps <code>String</code> objects (the property names) to - * {@link EventListenerList} instances (which record the listener(s) for the - * given property). - */ - private Hashtable propertyListeners; - - /** - * The object that is used as the default source for the - * {@link PropertyChangeEvent}s generated by this class. - */ - private Object source; - - /** * Creates a new instance. * * @param source the source (<code>null</code> not permitted). @@ -90,247 +66,5 @@ public final class SwingPropertyChangeSupport public SwingPropertyChangeSupport(Object source) { super(source); - this.source = source; - this.listeners = new EventListenerList(); - this.propertyListeners = new Hashtable(); } - - /** - * Registers <code>listener</code> to receive notification of any future - * {@link PropertyChangeEvent}s generated by this instance. - * - * @param listener the listener (<code>null</code> is ignored). - * - * @see #removePropertyChangeListener(PropertyChangeListener) - */ - public synchronized void addPropertyChangeListener(PropertyChangeListener - listener) - { - listeners.add(PropertyChangeListener.class, listener); - } - - /** - * Registers <code>listener</code> to receive notification of any future - * {@link PropertyChangeEvent}s generated by this instance for the named - * property. - * - * @param propertyName the property name. - * @param listener the listener. - * - * @see #removePropertyChangeListener(String, PropertyChangeListener) - */ - public synchronized void addPropertyChangeListener(String propertyName, - PropertyChangeListener listener) - { - EventListenerList list; - list = (EventListenerList) propertyListeners.get(propertyName); - if (list == null) - { - list = new EventListenerList(); - propertyListeners.put(propertyName, list); - } - list.add(PropertyChangeListener.class, listener); - } - - /** - * Removes <code>listener</code> from the list of registered listeners, so - * that it will no longer receive notification of property change events. - * - * @param listener the listener to remove. - */ - public synchronized void removePropertyChangeListener(PropertyChangeListener - listener) - { - listeners.remove(PropertyChangeListener.class, listener); - } - - /** - * Removes <code>listener</code> from the list of registered listeners for - * the named property, so that it will no longer receive notification of - * property change events. - * - * @param propertyName the property name. - * @param listener the listener to remove. - */ - public synchronized void removePropertyChangeListener(String propertyName, - PropertyChangeListener listener) - { - EventListenerList list; - list = (EventListenerList) propertyListeners.get(propertyName); - if (list == null) - return; - list.remove(PropertyChangeListener.class, listener); - if (list.getListenerCount() == 0) - { - propertyListeners.remove(propertyName); - } - } - - /** - * Returns an array of the {@link PropertyChangeListener}s registered with - * this <code>SwingPropertyChangeSupport</code> instance. - * - * @return The array of listeners. - * - * @since 1.4 - */ - public synchronized PropertyChangeListener[] getPropertyChangeListeners() - { - // fetch the named listeners first so we know how many there are - List namedListeners = new ArrayList(); - Set namedListenerEntries = propertyListeners.entrySet(); - Iterator iterator = namedListenerEntries.iterator(); - while (iterator.hasNext()) - { - Map.Entry e = (Map.Entry) iterator.next(); - String propertyName = (String) e.getKey(); - EventListenerList ell = (EventListenerList) e.getValue(); - if (ell != null) - { - Object[] list = ell.getListenerList(); - for (int i = 0; i < list.length; i += 2) - { - namedListeners.add(new PropertyChangeListenerProxy(propertyName, - (PropertyChangeListener) list[i + 1])); - } - } - } - - // create an array that can hold everything - int size = listeners.getListenerCount() + namedListeners.size(); - PropertyChangeListener[] result = new PropertyChangeListener[size]; - - // copy in the general listeners - Object[] list = listeners.getListenerList(); - int index = 0; - for (int i = 0; i < list.length; i += 2) - result[index++] = (PropertyChangeListener) list[i + 1]; - - // ...and the named listeners - Iterator iterator2 = namedListeners.iterator(); - while (iterator2.hasNext()) - result[index++] = (PropertyChangeListenerProxy) iterator2.next(); - - return result; - } - - /** - * Returns an array of all listeners that are registered to receive - * notification of changes to the named property. This includes the general - * listeners as well as those registered specifically for the named - * property. - * - * @param propertyName the property name. - * - * @return An array of all listeners for the named property. - */ - public synchronized PropertyChangeListener[] getPropertyChangeListeners( - String propertyName) - { - EventListenerList list - = (EventListenerList) propertyListeners.get(propertyName); - if (list == null) - return getPropertyChangeListeners(); - int size = listeners.getListenerCount() + list.getListenerCount(); - PropertyChangeListener[] result = new PropertyChangeListener[size]; - - // copy in the general listeners - int index = 0; - for (int i = 0; i < listeners.listenerList.length; i += 2) - { - result[index++] - = (PropertyChangeListener) listeners.listenerList[i + 1]; - } - - // copy in the specific listeners - Object[] specificListeners = list.getListenerList(); - for (int i = 0; i < specificListeners.length; i += 2) - { - result[index++] = (PropertyChangeListener) specificListeners[i + 1]; - } - return result; - } - - /** - * Creates a new {@link PropertyChangeEvent} using the given arguments (and - * the default <code>source</code> for this - * <code>SwingPropertyChangeSupport</code> instance) and forwards it to all - * registered listeners via the - * {@link PropertyChangeListener#propertyChange(PropertyChangeEvent)} method. - * <p> - * Note that if <code>oldValue</code> and <code>newValue</code> are non-null - * and equal, no listeners will be notified. - * - * @param propertyName the property name. - * @param oldValue the old value - * @param newValue the new value. - */ - public void firePropertyChange(String propertyName, Object oldValue, - Object newValue) - { - PropertyChangeEvent event; - event = new PropertyChangeEvent(source, propertyName, oldValue, newValue); - firePropertyChange(event); - } - - /** - * Forwards <code>event</code> to registered listeners. - * <p> - * Note that if the event's <code>getOldValue()</code> and - * <code>getNewValue()</code> methods return non-null and equal values, no - * listeners will be notified. - * - * @param event the event. - */ - public void firePropertyChange(PropertyChangeEvent event) - { - EventListenerList list; - EventListener[] listenerList; - int index; - PropertyChangeListener listener; - - // if the old and new values are non-null and equal, don't notify listeners - if (event.getOldValue() != null && event.getNewValue() != null && - event.getOldValue().equals(event.getNewValue())) - return; - - // Process Main Listener List - listenerList = listeners.getListeners(PropertyChangeListener.class); - for (index = 0; index < listenerList.length; index++) - { - listener = (PropertyChangeListener) listenerList[index]; - listener.propertyChange(event); - } - - // Process Property Listener List - list = (EventListenerList) propertyListeners.get(event.getPropertyName()); - if (list != null) - { - listenerList = list.getListeners(PropertyChangeListener.class); - for (index = 0; index < listenerList.length; index++) - { - listener = (PropertyChangeListener) listenerList[index]; - listener.propertyChange(event); - } - } - - } - - /** - * Tell whether the specified property is being listened on or not. This - * will only return <code>true</code> if there are listeners on all - * properties or if there is a listener specifically on this property. - * - * @param propertyName the property that may be listened on - * @return whether the property is being listened on - * @throws NullPointerException if propertyName is null - */ - public synchronized boolean hasListeners(String propertyName) - { - if (listeners.getListenerCount() > 0) - return true; - else - return (propertyListeners.get(propertyName) != null); - } - } |
