java.beans.PropertyChangeSupport Maven / Gradle / Ivy

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This work corresponds to the API signatures of JSR 217: Personal Basis Profile 1.1. In the event of a discrepency between this work and the JSR 217 specification, which is available at http://www.jcp.org/en/jsr/detail?id=217, the latter takes precedence. */ package java.beans; import java.io.Serializable; import java.io.ObjectOutputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.util.Arrays; import java.util.ArrayList; import java.util.Iterator; import java.util.List; /** * This is a utility class that can be used by beans that support bound * properties. You can use an instance of this class as a member field * of your bean and delegate various work to it. * * 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. * */ public class PropertyChangeSupport implements Serializable { /** * Hashtable for managing listeners for specific properties. * Maps property names to PropertyChangeSupport objects. * @serial * @since 1.2 */ private java.util.Hashtable children; /** * The object to be provided as the "source" for any generated events. * @serial */ private Object source; /** * Internal version number * @serial * @since */ private int propertyChangeSupportSerializedDataVersion; /** * Constructs a PropertyChangeSupport object. * * @param sourceBean The bean to be given as the source for any events. */ public PropertyChangeSupport(Object sourceBean) { } /** * Add a PropertyChangeListener to the listener list. * The listener is registered for all properties. * * @param listener The PropertyChangeListener to be added */ public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { } /** * Remove a PropertyChangeListener from the listener list. * This removes a PropertyChangeListener that was registered * for all properties. * * @param listener The PropertyChangeListener to be removed */ public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { } // PBP/PP // [6187238] /** * Returns an array of all the listeners that were added to the * PropertyChangeSupport object with addPropertyChangeListener(). * * * @return all of the PropertyChangeListeners added or an * empty array if no listeners have been added * @since 1.4 * * */ public synchronized PropertyChangeListener[] getPropertyChangeListeners() { return null; } /** * Add a PropertyChangeListener for a specific property. The listener * will be invoked only when a call on firePropertyChange names that * specific property. * * @param propertyName The name of the property to listen on. * @param listener The PropertyChangeListener to be added */ // public synchronized void addPropertyChangeListener(String propertyName, // PropertyChangeListener listener) // { } // /** // * Remove a PropertyChangeListener for a specific property. // * // * @param propertyName The name of the property that was listened on. // * @param listener The PropertyChangeListener to be removed // */ // public synchronized void removePropertyChangeListener(String propertyName, // PropertyChangeListener listener) // { } // /** // * Returns an array of all the listeners which have been associated // * with the named property. // * // * @return all of the PropertyChangeListeners associated with // * the named property or an empty array if no listeners have // * been added // */ // public synchronized PropertyChangeListener[] // getPropertyChangeListeners(String propertyName) // { } /** * Report a bound property update to any registered listeners. * No event is fired if old and new are equal and non-null. * * @param propertyName The programmatic name of the property * that was changed. * @param oldValue The old value of the property. * @param newValue The new value of the property. */ public void firePropertyChange(String propertyName, Object oldValue, Object newValue) { } // /** // * Report an int bound property update to any registered listeners. // * No event is fired if old and new are equal and non-null. // *

// * This is merely a convenience wrapper around the more general // * firePropertyChange method that takes Object values. // * // * @param propertyName The programmatic name of the property // * that was changed. // * @param oldValue The old value of the property. // * @param newValue The new value of the property. // */ // public void firePropertyChange(String propertyName, int oldValue, int // newValue) // { } // /** // * Report a boolean bound property update to any registered listeners. // * No event is fired if old and new are equal and non-null. // *

// * This is merely a convenience wrapper around the more general // * firePropertyChange method that takes Object values. // * // * @param propertyName The programmatic name of the property // * that was changed. // * @param oldValue The old value of the property. // * @param newValue The new value of the property. // */ // public void firePropertyChange(String propertyName, boolean oldValue, // boolean newValue) // { } // /** // * Fire an existing PropertyChangeEvent to any registered listeners. // * No event is fired if the given event's old and new values are // * equal and non-null. // * @param evt The PropertyChangeEvent object. // */ // public void firePropertyChange(PropertyChangeEvent evt) { } // /** // * Check if there are any listeners for a specific property. // * // * @param propertyName the property name. // * @return true if there are ore or more listeners for the given property // */ // public synchronized boolean hasListeners(String propertyName) { } private void readObject(ObjectInputStream s) throws ClassNotFoundException, IOException { } /** * @serialData Null terminated list of PropertyChangeListeners. *