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/*
* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.service.protocol;
import java.util.*;
import net.java.sip.communicator.service.protocol.event.*;
import net.java.sip.communicator.util.*;
/**
* Implements "standard" functionality of <tt>ProtocolProviderService</code> in
* order to make it easier for implementers to provide complete solutions while
* focusing on protocol-specific details.
*/
public abstract class AbstractProtocolProviderService
implements ProtocolProviderService
{
/**
* Logger of this class
*/
private static final Logger logger =
Logger.getLogger(AbstractProtocolProviderService.class);
/**
* A list of all listeners registered for
* <tt>RegistrationStateChangeEvent</tt>s.
*/
private final List registrationListeners = new ArrayList();
/**
* Registers the specified listener with this provider so that it would
* receive notifications on changes of its state or other properties such
* as its local address and display name.
*
* @param listener the listener to register.
*/
public void addRegistrationStateChangeListener(
RegistrationStateChangeListener listener)
{
synchronized(registrationListeners)
{
if (!registrationListeners.contains(listener))
registrationListeners.add(listener);
}
}
/**
* Creates a RegistrationStateChange event corresponding to the specified
* old and new states and notifies all currently registered listeners.
*
* @param oldState the state that the provider had before the change
* occurred
* @param newState the state that the provider is currently in.
* @param reasonCode a value corresponding to one of the REASON_XXX fields
* of the RegistrationStateChangeEvent class, indicating the reason for
* this state transition.
* @param reason a String further explaining the reason code or null if
* no such explanation is necessary.
*/
public void fireRegistrationStateChanged( RegistrationState oldState,
RegistrationState newState,
int reasonCode,
String reason)
{
RegistrationStateChangeEvent event =
new RegistrationStateChangeEvent(
this, oldState, newState, reasonCode, reason);
logger.debug("Dispatching " + event + " to "
+ registrationListeners.size()+ " listeners.");
Iterator listeners = null;
synchronized (registrationListeners)
{
listeners = new ArrayList(registrationListeners).iterator();
}
while (listeners.hasNext())
{
RegistrationStateChangeListener listener
= (RegistrationStateChangeListener) listeners.next();
listener.registrationStateChanged(event);
}
logger.trace("Done.");
}
/**
* Returns the protocol display name. This is the name that would be used
* by the GUI to display the protocol name.
*
* @return a String containing the display name of the protocol this service
* is implementing
*/
public String getProtocolDisplayName()
{
String displayName = (String) getAccountID().getAccountProperties()
.get(ProtocolProviderFactory.PROTOCOL);
return (displayName == null) ? getProtocolName() : displayName;
}
/**
* Removes the specified registration state change listener so that it does
* not receive any further notifications upon changes of the
* RegistrationState of this provider.
*
* @param listener the listener to register for
* <tt>RegistrationStateChangeEvent</tt>s.
*/
public void removeRegistrationStateChangeListener(
RegistrationStateChangeListener listener)
{
synchronized(registrationListeners)
{
registrationListeners.remove(listener);
}
}
}
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