propertychangemulticaster.html

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<A NAME="addPropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)"><!-- --></A><H3>
addPropertyChangeListener</H3>
<PRE>
public void <B>addPropertyChangeListener</B>(java.lang.String&nbsp;propertyName,
                                      java.beans.PropertyChangeListener&nbsp;listener)</PRE>
<DL>
<DD>Add a PropertyChangeListener for a specific property.  The listener
 will be invoked only when a call on firePropertyChange names that
 specific property. However, if a listener is registered both for all
 properties and a specific property, it will receive multiple 
 notifications upon changes to that property.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The name of the property to listen on.<DD><CODE>listener</CODE> - The PropertyChangeListener to be added
<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE> - If listener is null</DL>
</DD>
</DL>
<HR>

<A NAME="addPropertyChangeListenerIfAbsent(java.lang.String, java.beans.PropertyChangeListener)"><!-- --></A><H3>
addPropertyChangeListenerIfAbsent</H3>
<PRE>
public void <B>addPropertyChangeListenerIfAbsent</B>(java.lang.String&nbsp;propertyName,
                                              java.beans.PropertyChangeListener&nbsp;listener)</PRE>
<DL>
<DD>Add a PropertyChangeListener for a specific property, if it is not
 already registered.  The listener
 will be invoked only when a call on firePropertyChange names that
 specific property.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The name of the property to listen on.<DD><CODE>listener</CODE> - The PropertyChangeListener to be added
<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE> - If listener is null</DL>
</DD>
</DL>
<HR>

<A NAME="removePropertyChangeListener(java.lang.String, java.beans.PropertyChangeListener)"><!-- --></A><H3>
removePropertyChangeListener</H3>
<PRE>
public void <B>removePropertyChangeListener</B>(java.lang.String&nbsp;propertyName,
                                         java.beans.PropertyChangeListener&nbsp;listener)</PRE>
<DL>
<DD>Remove a PropertyChangeListener for a specific property.
 Affects only the given property. 
 If the listener is also registered for all properties,
 then it will continue to be registered for them.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The name of the property that was listened on.<DD><CODE>listener</CODE> - The PropertyChangeListener to be removed</DL>
</DD>
</DL>
<HR>

<A NAME="multicast(java.beans.PropertyChangeEvent)"><!-- --></A><H3>
multicast</H3>
<PRE>
protected void <B>multicast</B>(java.beans.PropertyChangeEvent&nbsp;evt)</PRE>
<DL>
<DD>Helper method to relay evt to all listeners. 
 Called by all public firePropertyChange methods.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)"><!-- --></A><H3>
firePropertyChange</H3>
<PRE>
public void <B>firePropertyChange</B>(java.lang.String&nbsp;propertyName,
                               java.lang.Object&nbsp;oldValue,
                               java.lang.Object&nbsp;newValue)</PRE>
<DL>
<DD>Report a bound property update to any registered listeners.
 No event is fired if old and new are equal and non-null.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The programmatic name of the property
		that was changed.<DD><CODE>oldValue</CODE> - The old value of the property.<DD><CODE>newValue</CODE> - The new value of the property.</DL>
</DD>
</DL>
<HR>

<A NAME="firePropertyChange(java.lang.String, int, int)"><!-- --></A><H3>
firePropertyChange</H3>
<PRE>
public void <B>firePropertyChange</B>(java.lang.String&nbsp;propertyName,
                               int&nbsp;oldValue,
                               int&nbsp;newValue)</PRE>
<DL>
<DD>Report an int bound property update to any registered listeners.
 No event is fired if old and new are equal and non-null.
 <p>
 This is merely a convenience wrapper around the more general
 firePropertyChange method that takes Object values.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The programmatic name of the property
		that was changed.<DD><CODE>oldValue</CODE> - The old value of the property.<DD><CODE>newValue</CODE> - The new value of the property.</DL>
</DD>
</DL>
<HR>

<A NAME="firePropertyChange(java.lang.String, boolean, boolean)"><!-- --></A><H3>
firePropertyChange</H3>
<PRE>
public void <B>firePropertyChange</B>(java.lang.String&nbsp;propertyName,
                               boolean&nbsp;oldValue,
                               boolean&nbsp;newValue)</PRE>
<DL>
<DD>Report a boolean bound property update to any registered listeners.
 No event is fired if old and new are equal and non-null.
 <p>
 This is merely a convenience wrapper around the more general
 firePropertyChange method that takes Object values.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - The programmatic name of the property
		that was changed.<DD><CODE>oldValue</CODE> - The old value of the property.<DD><CODE>newValue</CODE> - The new value of the property.</DL>
</DD>
</DL>
<HR>

<A NAME="firePropertyChange(java.beans.PropertyChangeEvent)"><!-- --></A><H3>
firePropertyChange</H3>
<PRE>
public void <B>firePropertyChange</B>(java.beans.PropertyChangeEvent&nbsp;evt)</PRE>
<DL>
<DD>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.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>evt</CODE> - The PropertyChangeEvent object.</DL>
</DD>
</DL>
<HR>

<A NAME="hasListeners(java.lang.String)"><!-- --></A><H3>
hasListeners</H3>
<PRE>
public boolean <B>hasListeners</B>(java.lang.String&nbsp;propertyName)</PRE>
<DL>
<DD>Check if there are any listeners for a specific property.
 If propertyName is null, return whether there are any listeners at all.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>propertyName</CODE> - the property name.
<DT><B>Returns:</B><DD>true if there are one or more listeners for the given property</DL>
</DD>
</DL>
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