public static ComEventsSink?Remove(ComEventsSink sinks, ComEventsSink sink)
{
Debug.Assert(sinks != null, "removing event sink from empty sinks collection");
Debug.Assert(sink != null, "specify event sink is null");
ComEventsSink?toReturn = sinks;
if (sink == sinks)
{
toReturn = sinks._next;
}
else
{
ComEventsSink?current = sinks;
while (current != null && current._next != sink)
{
current = current._next;
}
if (current != null)
{
current._next = sink._next;
}
}
sink.Unadvise();
return(toReturn);
}
public static ComEventsSink FromRuntimeCallableWrapper(object rcw, Guid sourceIid, bool createIfNotFound)
{
List <ComEventsSink> comEventSinks = ComEventSinksContainer.FromRuntimeCallableWrapper(rcw, createIfNotFound);
if (comEventSinks == null)
{
return(null);
}
ComEventsSink comEventSink = null;
lock (comEventSinks)
{
foreach (ComEventsSink sink in comEventSinks)
{
if (sink._iidSourceItf == sourceIid)
{
comEventSink = sink;
break;
}
if (sink._iidSourceItf == Guid.Empty)
{
// we found a ComEventSink object that
// was previously disposed. Now we will reuse it.
sink.Initialize(rcw, sourceIid);
comEventSink = sink;
}
}
if (comEventSink == null && createIfNotFound)
{
comEventSink = new ComEventsSink(rcw, sourceIid);
comEventSinks.Add(comEventSink);
}
}
return(comEventSink);
}
public static ComEventsSink Add(ComEventsSink?sinks, ComEventsSink sink)
{
sink._next = sinks;
return(sink);
}