internal TimelinePosition DetermineItemPosition(TimelineItem item)
{
if (Mode == TimelineMode.Left)
{
return(TimelinePosition.Left);
}
if (Mode == TimelineMode.Right)
{
return(TimelinePosition.Right);
}
if (currentItemPosition == null)
{
currentItemPosition = TimelinePosition.Left;
return(TimelinePosition.Left);
}
if (currentItemPosition == TimelinePosition.Left)
{
currentItemPosition = TimelinePosition.Right;
return(TimelinePosition.Right);
}
if (currentItemPosition == TimelinePosition.Right)
{
currentItemPosition = TimelinePosition.Left;
return(TimelinePosition.Left);
}
return(item.Position);
}
private void UpdateLastItem(TimelineItem item)
{
var previousLast = lastItem;
lastItem = item;
previousLast?.UpdateIsLast(false);
lastItem.UpdateIsLast(true);
}
internal void Subscribe(TimelineItem item)
{
items.Add(item);
if (item.Label != null)
{
hasLabels = true;
}
UpdateLastItem(item);
StateHasChanged();
}
internal void Unsubscribe(TimelineItem item)
{
items.Remove(item);
}