private void updateTimingGroup()
{
beatLength.UnbindBindings();
var tcp = selectedGroup.Value?.ControlPoints.OfType <TimingControlPoint>().FirstOrDefault();
if (tcp == null)
{
timingPoint = new TimingControlPoint();
// During movement of a control point's offset, this clause can be hit momentarily,
// as moving a control point is implemented by removing it and inserting it at the new time.
// We don't want to reset the `selectedGroupStartTime` here as we rely on having the
// last value to update the waveform display below.
selectedGroupEndTime = beatmap.Value.Track.Length;
return;
}
timingPoint = tcp;
beatLength.BindTo(timingPoint.BeatLengthBindable);
double?newStartTime = selectedGroup.Value?.Time;
double?offsetChange = newStartTime - selectedGroupStartTime;
var nextGroup = editorBeatmap.ControlPointInfo.TimingPoints
.SkipWhile(g => g != tcp)
.Skip(1)
.FirstOrDefault();
selectedGroupStartTime = newStartTime ?? 0;
selectedGroupEndTime = nextGroup?.Time ?? beatmap.Value.Track.Length;
if (newStartTime.HasValue && offsetChange.HasValue)
{
// The offset of the selected point may have changed.
// This handles the case the user has locked the view and expects the display to update with this change.
showFromTime(displayedTime + offsetChange.Value, true);
}
}
