/// <summary>
/// Adds a handler to an event.
/// </summary>
/// <param name="handler">The handler to be added.</param>
/// <returns>The original event with handler added.</returns>
private object InPlaceAdd(object handler)
{
VerifyHandler(handler);
ComEventSink comEventSink = ComEventSink.FromRuntimeCallableWrapper(_rcw, _sourceIid, true);
comEventSink.AddHandler(_dispid, handler);
return(this);
}
/// <summary>
/// Removes handler from the event.
/// </summary>
/// <param name="handler">The handler to be removed.</param>
/// <returns>The original event with handler removed.</returns>
private object InPlaceSubtract(object handler)
{
VerifyHandler(handler);
ComEventSink comEventSink = ComEventSink.FromRuntimeCallableWrapper(_rcw, _sourceIid, false);
if (comEventSink != null)
{
comEventSink.RemoveHandler(_dispid, handler);
}
return(this);
}
public static ComEventSink FromRuntimeCallableWrapper(object rcw, Guid sourceIid, bool createIfNotFound)
{
List <ComEventSink> comEventSinks = ComEventSinksContainer.FromRuntimeCallableWrapper(rcw, createIfNotFound);
if (comEventSinks == null)
{
return(null);
}
ComEventSink comEventSink = null;
lock (comEventSinks)
{
foreach (ComEventSink sink in comEventSinks)
{
if (sink._sourceIid == sourceIid)
{
comEventSink = sink;
break;
}
else if (sink._sourceIid == 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 == true)
{
comEventSink = new ComEventSink(rcw, sourceIid);
comEventSinks.Add(comEventSink);
}
}
return(comEventSink);
}
public static ComEventSink FromRuntimeCallableWrapper(object rcw, Guid sourceIid, bool createIfNotFound)
{
List<ComEventSink> comEventSinks = ComEventSinksContainer.FromRuntimeCallableWrapper(rcw, createIfNotFound);
if (comEventSinks == null)
{
return null;
}
ComEventSink comEventSink = null;
lock (comEventSinks)
{
foreach (ComEventSink sink in comEventSinks)
{
if (sink._sourceIid == sourceIid)
{
comEventSink = sink;
break;
}
else if (sink._sourceIid == 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 == true)
{
comEventSink = new ComEventSink(rcw, sourceIid);
comEventSinks.Add(comEventSink);
}
}
return comEventSink;
}
public ComEventSinkProxy(ComEventSink sink, Guid sinkIid)
: base(typeof(ComEventSink))
{
_sink = sink;
_sinkIid = sinkIid;
}
public ComEventSinkProxy(ComEventSink sink, Guid sinkIid)
: base(typeof(ComEventSink))
{
_sink = sink;
_sinkIid = sinkIid;
}
