private ScrollingSelector(ScrollingSelector <T> source,
Func <uint, ITicker> getTicker = null, uint?delay = null,
uint?endsDelay = null, uint?availableDigits = null,
ImmutableList <T> values = null, int?offset = null,
Option <ITicker>?ticker = null)
{
this.getTicker = getTicker ?? source.getTicker;
this.delay = delay ?? source.delay;
this.endsDelay = endsDelay ?? source.endsDelay;
this.availableDigits = availableDigits ?? source.availableDigits;
this.values = values ?? source.values;
this.offset = offset ?? source.offset;
this.ticker = ticker ?? source.ticker;
}
public ISelector <T> Tick(uint currentTime)
{
var result = this;
ticker.MatchSome((tck) => {
if (tck.Ticked(currentTime))
{
var offsetN = offset >= values.Count - availableDigits ? 0 : offset + 1;
var currentDelay = offsetN == 0 || offsetN == values.Count - availableDigits ?
endsDelay : delay;
result = new ScrollingSelector <T>(this, offset: offsetN,
ticker: getTicker(currentDelay).SomeNotNull());
}
});
return(result);
}
