cvs commit: jakarta-log4j/src/java/org/apache/log4j/chainsaw LoggerNameModelSupport.java
<psmith <at> apache.org>
2003-09-01 02:00:19 GMT
psmith 2003/08/31 19:00:19
Added: src/java/org/apache/log4j/chainsaw
LoggerNameModelSupport.java
Log:
Additional support/delegate class to handle the work
load of the LoggerNameModel. Other class that
wish to implement the model interface but don't wish
to burden themselves with the effort can delegate to this
class.
Revision Changes Path
1.1 jakarta-log4j/src/java/org/apache/log4j/chainsaw/LoggerNameModelSupport.java
Index: LoggerNameModelSupport.java
===================================================================
/*
* ============================================================================
* The Apache Software License, Version 1.1
* ============================================================================
*
* Copyright (C) 1999 The Apache Software Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by the Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "log4j" and "Apache Software Foundation" must not be used to
* endorse or promote products derived from this software without prior
* written permission. For written permission, please contact
* apache <at> apache.org.
*
* 5. Products derived from this software may not be called "Apache", nor may
* "Apache" appear in their name, without prior written permission of the
* Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
* DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* on behalf of the Apache Software Foundation. For more information on the
* Apache Software Foundation, please see <http://www.apache.org/>.
*
*/
/*
*/
package org.apache.log4j.chainsaw;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.swing.event.EventListenerList;
/**
* An implementation of LoggerNameModel which can be used as a delegate
*
* <at> author Paul Smith <psmith <at> apache.org>
*/
public class LoggerNameModelSupport implements LoggerNameModel {
private Set loggerNameSet = new HashSet();
private EventListenerList listenerList = new EventListenerList();
/* (non-Javadoc)
* <at> see org.apache.log4j.chainsaw.LoggerNameModel#getLoggerNames()
*/
public Collection getLoggerNames() {
return Collections.unmodifiableSet(loggerNameSet);
}
/* (non-Javadoc)
* <at> see org.apache.log4j.chainsaw.LoggerNameModel#addLoggerName(java.lang.String)
*/
public boolean addLoggerName(String loggerName) {
boolean isNew = loggerNameSet.add(loggerName);
if(isNew)
{
notifyListeners(loggerName);
}
return isNew;
}
/**
* Notifies all the registered listeners that a new unique
* logger name has been added to this model
* <at> param loggerName
*/
private void notifyListeners(String loggerName)
{
LoggerNameListener[] eventListeners = (LoggerNameListener[]) listenerList.getListeners(LoggerNameListener.class);
for (int i = 0; i < eventListeners.length; i++)
{
LoggerNameListener listener = eventListeners[i];
listener.loggerNameAdded(loggerName);
}
}
/* (non-Javadoc)
* <at> see org.apache.log4j.chainsaw.LoggerNameModel#addLoggerNameListener(org.apache.log4j.chainsaw.LoggerNameListener)
*/
public void addLoggerNameListener(LoggerNameListener l) {
listenerList.add(LoggerNameListener.class, l);
}
/* (non-Javadoc)
* <at> see org.apache.log4j.chainsaw.LoggerNameModel#removeLoggerNameListener(org.apache.log4j.chainsaw.LoggerNameListener)
*/
public void removeLoggerNameListener(LoggerNameListener l) {
listenerList.remove(LoggerNameListener.class, l);
}
}
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