static IObservable <IControl> BuildIndicator(
IObservable <IBinaryMessage> fromSimulator,
string messageType,
string title,
IObservable <Color> foreground,
IObservable <Color> background)
{
var started = fromSimulator
.TryParse(Started.MessageType, Started.ReadDataFrom)
.Where(m => m.Command.Type == messageType).Select(_ => true);
var ended = fromSimulator
.TryParse(Ended.MessageType, Ended.ReadDataFrom)
.Where(m => m.Command.Type == messageType).Select(_ => false);
// stream of bool that is true from 250 ms after messageType started and false when messageType ends
var indicator =
started
.Merge(ended)
.Throttle(TimeSpan.FromMilliseconds(250))
.Merge(ended)
.DistinctUntilChanged()
.Select(
building => building
? Busy.Create(title, background, foreground)
: Control.Empty);
return(indicator);
}
