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org.eclipse.net4j.util.event</FONT>
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Interface INotifier</H2>
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<DT><PRE>public interface <B>INotifier</B></DL>
</PRE>

<P>
An entity that a number of <A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event"><CODE>listeners</CODE></A> can be registered with and that can fire <A HREF="../../../../../org/eclipse/net4j/util/event/IEvent.html" title="interface in org.eclipse.net4j.util.event"><CODE>events</CODE></A>
 to these registered listeners.
 <p>
 Implementors are encouraged to document the event types that they are able to fire and that their listeners may want
 to receive and handle.
 <p>
 Implementors may want to extend <A HREF="../../../../../org/eclipse/net4j/util/event/Notifier.html" title="class in org.eclipse.net4j.util.event"><CODE>Notifier</CODE></A> instead of implementing this interface directly.
<P>

<P>
<DL>
<DT><B>Author:</B></DT>
  <DD>Eike Stepper</DD>
</DL>
<HR>

<P>

<!-- ========== METHOD SUMMARY =========== -->

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/eclipse/net4j/util/event/INotifier.html#addListener(org.eclipse.net4j.util.event.IListener)">addListener</A></B>(<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>&nbsp;listener)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Adds a listener to this notifier.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/eclipse/net4j/util/event/INotifier.html#getListeners()">getListeners</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the listeners that are registered with this notifier.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/eclipse/net4j/util/event/INotifier.html#hasListeners()">hasListeners</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns <code>true</code> if one or more listeners are registered with this notifier, <code>false</code> otherwise.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/eclipse/net4j/util/event/INotifier.html#removeListener(org.eclipse.net4j.util.event.IListener)">removeListener</A></B>(<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>&nbsp;listener)</CODE>

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes a listener from this notifier.</TD>
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<A NAME="addListener(org.eclipse.net4j.util.event.IListener)"><!-- --></A><H3>
addListener</H3>
<PRE>
void <B>addListener</B>(<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Adds a listener to this notifier.
 <p>
 Depending on the implementation duplicate listeners may lead to duplicate event delivery or not. Implementors are
 encouraged to prevent events from being delivered more than once to the same listener,
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="removeListener(org.eclipse.net4j.util.event.IListener)"><!-- --></A><H3>
removeListener</H3>
<PRE>
void <B>removeListener</B>(<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>&nbsp;listener)</PRE>
<DL>
<DD>Removes a listener from this notifier.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="hasListeners()"><!-- --></A><H3>
hasListeners</H3>
<PRE>
boolean <B>hasListeners</B>()</PRE>
<DL>
<DD>Returns <code>true</code> if one or more listeners are registered with this notifier, <code>false</code> otherwise.
<P>
<DD><DL>
<DT><B>Since:</B></DT>
  <DD>3.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getListeners()"><!-- --></A><H3>
getListeners</H3>
<PRE>
<A HREF="../../../../../org/eclipse/net4j/util/event/IListener.html" title="interface in org.eclipse.net4j.util.event">IListener</A>[] <B>getListeners</B>()</PRE>
<DL>
<DD>Returns the listeners that are registered with this notifier.
 <p>
 Depending on the implementation duplicate listeners may be contained in the returned array.
<P>
<DD><DL>
<DT><B>Since:</B></DT>
  <DD>3.0</DD>
</DL>
</DD>
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