private SequencerViewModel MakeSequencerViewModel(Timeline timeline)
{
// Hack: Extract view state from old view model and inject into new one,
// so it can work with it without before the view is updated.
double viewportLeftOffsetPx = CurrentDocument?.GetViewportLeftOffsetPx() ?? 0.0;
double viewportWidthPx = CurrentDocument?.GetViewportWidth() ?? 1000.0;
var newDocument = new SequencerViewModel(timeline);
newDocument.SetViewportState(viewportLeftOffsetPx, viewportWidthPx);
return(newDocument);
}
