/// <summary>Remove any registration of a listener from the listener list.</summary>
/// <param name="l">listener</param>
/// <returns>true if the listener was found (and then removed)</returns>
public virtual bool Remove(ServiceStateChangeListener l)
{
lock (this)
{
return(listeners.Remove(l));
}
}
/// <summary>Thread-safe addition of a new listener to the end of a list.</summary>
/// <remarks>
/// Thread-safe addition of a new listener to the end of a list.
/// Attempts to re-register a listener that is already registered
/// will be ignored.
/// </remarks>
/// <param name="l">listener</param>
public virtual void Add(ServiceStateChangeListener l)
{
lock (this)
{
if (!listeners.Contains(l))
{
listeners.AddItem(l);
}
}
}
private bool Unregister(ServiceStateChangeListener l)
{
return(AbstractService.UnregisterGlobalListener(l));
}
private void Register(ServiceStateChangeListener l)
{
AbstractService.RegisterGlobalListener(l);
}
/// <summary>
/// Unregister a previously registered listener of the service state
/// change events.
/// </summary>
/// <remarks>
/// Unregister a previously registered listener of the service state
/// change events. No-op if the listener is already unregistered.
/// </remarks>
/// <param name="listener">the listener to unregister.</param>
public abstract void UnregisterServiceListener(ServiceStateChangeListener listener
);
/// <summary>unregister a global listener.</summary>
/// <param name="l">listener to unregister</param>
/// <returns>true if the listener was found (and then deleted)</returns>
public static bool UnregisterGlobalListener(ServiceStateChangeListener l)
{
return(globalListeners.Remove(l));
}
/// <summary>
/// Register a global listener, which receives notifications
/// from the state change events of all services in the JVM
/// </summary>
/// <param name="l">listener</param>
public static void RegisterGlobalListener(ServiceStateChangeListener l)
{
globalListeners.Add(l);
}
public override void UnregisterServiceListener(ServiceStateChangeListener l)
{
listeners.Remove(l);
}
public override void RegisterServiceListener(ServiceStateChangeListener l)
{
listeners.Add(l);
}
