/// <summary>
/// Adds the event that is fired when a window broadcasts on this channel
/// </summary>
/// <param name="listener"></param>
/// <returns></returns>
public Task AddContextListenerAsync(Action <ContextBase> listener)
{
var channelContextListener = new ChannelContextListener
{
Channel = this,
Handler = listener
};
var hasAny = FDC3Handlers.HasContextListener(this.ChannelId);
FDC3Handlers.ChannelContextHandlers.Add(channelContextListener);
if (!hasAny)
{
return(connection.AddChannelContextListenerAsync(this.ChannelId));
}
else
{
return(new TaskCompletionSource <object>(null).Task);
}
}
/// <summary>
/// Removes the event fired when a window
/// </summary>
/// <param name="listener"></param>
public void RemoveContextListener(ChannelContextListener listener)
{
FDC3Handlers.ChannelContextHandlers.RemoveAll(x => x.Channel.ChannelId == listener.Channel.ChannelId);
connection.RemoveChannelContextListenerAsync(listener);
}