// it is caller's responsibility to call this method under lock(rcw)
internal static ComEventsInfo FromObject(object rcw) {
ComEventsInfo eventsInfo = Find(rcw);
if (eventsInfo == null) {
eventsInfo = new ComEventsInfo(rcw);
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), eventsInfo);
}
return eventsInfo;
}
public static void Combine(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = ComEventsHelper.UnwrapIfTransparentProxy(rcw);
lock (rcw)
{
ComEventsInfo local_2 = ComEventsInfo.FromObject(rcw);
ComEventsSink local_3 = local_2.FindSink(ref iid) ?? local_2.AddSink(ref iid);
(local_3.FindMethod(dispid) ?? local_3.AddMethod(dispid)).AddDelegate(d);
}
}
internal static ComEventsInfo FromObject(object rcw)
{
ComEventsInfo data = Find(rcw);
if (data == null)
{
data = new ComEventsInfo(rcw);
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), data);
}
return data;
}
// it is caller's responsibility to call this method under lock(rcw)
internal static ComEventsInfo FromObject(object rcw)
{
ComEventsInfo eventsInfo = Find(rcw);
if (eventsInfo == null)
{
eventsInfo = new ComEventsInfo(rcw);
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), eventsInfo);
}
return(eventsInfo);
}
internal static ComEventsInfo FromObject(object rcw)
{
ComEventsInfo comEventsInfo = ComEventsInfo.Find(rcw);
if (comEventsInfo == null)
{
comEventsInfo = new ComEventsInfo(rcw);
Marshal.SetComObjectData(rcw, (object)typeof(ComEventsInfo), (object)comEventsInfo);
}
return(comEventsInfo);
}
internal static ComEventsInfo FromObject(object rcw)
{
ComEventsInfo data = Find(rcw);
if (data == null)
{
data = new ComEventsInfo(rcw);
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), data);
}
return(data);
}
/// <summary>
/// Adds a delegate to the invocation list of events originating from the COM object.
/// </summary>
/// <param name="rcw">COM object firing the events the caller would like to respond to</param>
/// <param name="iid">identifier of the source interface used by COM object to fire events</param>
/// <param name="dispid">dispatch identifier of the method on the source interface</param>
/// <param name="d">delegate to invoke when specified COM event is fired</param>
public static void Combine(object rcw, Guid iid, int dispid, Delegate d)
{
lock (rcw)
{
ComEventsInfo eventsInfo = ComEventsInfo.FromObject(rcw);
ComEventsSink sink = eventsInfo.FindSink(ref iid) ?? eventsInfo.AddSink(ref iid);
ComEventsMethod method = sink.FindMethod(dispid) ?? sink.AddMethod(dispid);
method.AddDelegate(d);
}
}
public static Delegate Remove(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = ComEventsHelper.UnwrapIfTransparentProxy(rcw);
object obj = rcw;
Delegate result;
lock (obj)
{
ComEventsInfo comEventsInfo = ComEventsInfo.Find(rcw);
if (comEventsInfo == null)
{
result = null;
}
else
{
ComEventsSink comEventsSink = comEventsInfo.FindSink(ref iid);
if (comEventsSink == null)
{
result = null;
}
else
{
ComEventsMethod comEventsMethod = comEventsSink.FindMethod(dispid);
if (comEventsMethod == null)
{
result = null;
}
else
{
comEventsMethod.RemoveDelegate(d);
if (comEventsMethod.Empty)
{
comEventsMethod = comEventsSink.RemoveMethod(comEventsMethod);
}
if (comEventsMethod == null)
{
comEventsSink = comEventsInfo.RemoveSink(comEventsSink);
}
if (comEventsSink == null)
{
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), null);
GC.SuppressFinalize(comEventsInfo);
}
result = d;
}
}
}
}
return(result);
}
/// <summary>
/// Removes a delegate from the invocation list of events originating from the COM object.
/// </summary>
/// <param name="rcw">COM object the delegate is attached to</param>
/// <param name="iid">identifier of the source interface used by COM object to fire events</param>
/// <param name="dispid">dispatch identifier of the method on the source interface</param>
/// <param name="d">delegate to remove from the invocation list</param>
public static Delegate?Remove(object rcw, Guid iid, int dispid, Delegate d)
{
lock (rcw)
{
ComEventsInfo?eventsInfo = ComEventsInfo.Find(rcw);
if (eventsInfo == null)
{
return(null);
}
ComEventsSink?sink = eventsInfo.FindSink(ref iid);
if (sink == null)
{
return(null);
}
ComEventsMethod?method = sink.FindMethod(dispid);
if (method == null)
{
return(null);
}
method.RemoveDelegate(d);
if (method.Empty)
{
// removed the last event handler for this dispid - need to remove dispid handler
method = sink.RemoveMethod(method);
}
if (method == null)
{
// removed last dispid handler for this sink - need to remove the sink
sink = eventsInfo.RemoveSink(sink);
}
if (sink == null)
{
// removed last sink for this rcw - need to remove all traces of event info
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), null);
GC.SuppressFinalize(eventsInfo);
}
return(d);
}
}
public static void Combine(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = UnwrapIfTransparentProxy(rcw);
lock (rcw)
{
ComEventsInfo info = ComEventsInfo.FromObject(rcw);
ComEventsSink sink = info.FindSink(ref iid);
if (sink == null)
{
sink = info.AddSink(ref iid);
}
ComEventsMethod method = sink.FindMethod(dispid);
if (method == null)
{
method = sink.AddMethod(dispid);
}
method.AddDelegate(d);
}
}
public static void Combine(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = ComEventsHelper.UnwrapIfTransparentProxy(rcw);
object obj = rcw;
lock (obj)
{
ComEventsInfo comEventsInfo = ComEventsInfo.FromObject(rcw);
ComEventsSink comEventsSink = comEventsInfo.FindSink(ref iid);
if (comEventsSink == null)
{
comEventsSink = comEventsInfo.AddSink(ref iid);
}
ComEventsMethod comEventsMethod = comEventsSink.FindMethod(dispid);
if (comEventsMethod == null)
{
comEventsMethod = comEventsSink.AddMethod(dispid);
}
comEventsMethod.AddDelegate(d);
}
}
public static Delegate Remove(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = ComEventsHelper.UnwrapIfTransparentProxy(rcw);
lock (rcw)
{
ComEventsInfo local_2 = ComEventsInfo.Find(rcw);
if (local_2 == null)
{
return((Delegate)null);
}
ComEventsSink local_3 = local_2.FindSink(ref iid);
if (local_3 == null)
{
return((Delegate)null);
}
ComEventsMethod local_4 = local_3.FindMethod(dispid);
if (local_4 == null)
{
return((Delegate)null);
}
local_4.RemoveDelegate(d);
if (local_4.Empty)
{
local_4 = local_3.RemoveMethod(local_4);
}
if (local_4 == null)
{
local_3 = local_2.RemoveSink(local_3);
}
if (local_3 == null)
{
Marshal.SetComObjectData(rcw, (object)typeof(ComEventsInfo), (object)null);
GC.SuppressFinalize((object)local_2);
}
return(d);
}
}
public static Delegate Remove(object rcw, Guid iid, int dispid, Delegate d)
{
rcw = UnwrapIfTransparentProxy(rcw);
lock (rcw)
{
ComEventsInfo info = ComEventsInfo.Find(rcw);
if (info == null)
{
return(null);
}
ComEventsSink sink = info.FindSink(ref iid);
if (sink == null)
{
return(null);
}
ComEventsMethod method = sink.FindMethod(dispid);
if (method == null)
{
return(null);
}
method.RemoveDelegate(d);
if (method.Empty)
{
method = sink.RemoveMethod(method);
}
if (method == null)
{
sink = info.RemoveSink(sink);
}
if (sink == null)
{
Marshal.SetComObjectData(rcw, typeof(ComEventsInfo), null);
GC.SuppressFinalize(info);
}
return(d);
}
}
