protected DrawableCarouselItem(CarouselItem item)
{
Item = item;
Height = MAX_HEIGHT;
RelativeSizeAxes = Axes.X;
Alpha = 0;
}
public virtual void RemoveChild(CarouselItem i)
{
InternalChildren.Remove(i);
// it's important we do the deselection after removing, so any further actions based on
// State.ValueChanged make decisions post-removal.
i.State.Value = CarouselItemState.Collapsed;
}
public override void RemoveChild(CarouselItem i)
{
base.RemoveChild(i);
if (i != LastSelected)
{
updateSelectedIndex();
}
}
protected virtual void PerformSelection()
{
CarouselItem nextToSelect =
Children.Skip(lastSelectedIndex).FirstOrDefault(i => !i.Filtered.Value) ??
Children.Reverse().Skip(InternalChildren.Count - lastSelectedIndex).FirstOrDefault(i => !i.Filtered.Value);
if (nextToSelect != null)
{
nextToSelect.State.Value = CarouselItemState.Selected;
}
else
{
updateSelected(null);
}
}
protected override void ChildItemStateChanged(CarouselItem item, CarouselItemState value)
{
base.ChildItemStateChanged(item, value);
switch (value)
{
case CarouselItemState.Selected:
updateSelected(item);
break;
case CarouselItemState.NotSelected:
case CarouselItemState.Collapsed:
attemptSelection();
break;
}
}
protected virtual void ChildItemStateChanged(CarouselItem item, CarouselItemState value)
{
// ensure we are the only item selected
if (value == CarouselItemState.Selected)
{
foreach (CarouselItem b in InternalChildren)
{
if (item == b)
{
continue;
}
b.State.Value = CarouselItemState.NotSelected;
}
State.Value = CarouselItemState.Selected;
}
}
public override int CompareTo(FilterCriteria criteria, CarouselItem other)
{
if (!(other is CarouselBeatmapSet otherSet))
{
return(base.CompareTo(criteria, other));
}
switch (criteria.Sort)
{
default:
case SortMode.Artist:
return(string.Compare(BeatmapSet.Metadata.Song.Author, otherSet.BeatmapSet.Metadata.Song.Author, StringComparison.InvariantCultureIgnoreCase));
case SortMode.Title:
return(string.Compare(BeatmapSet.Metadata.Song.Name, otherSet.BeatmapSet.Metadata.Song.Name, StringComparison.InvariantCultureIgnoreCase));
case SortMode.Author:
return(string.Compare(BeatmapSet.Metadata.Level.CreatorName, otherSet.BeatmapSet.Metadata.Level.CreatorName, StringComparison.InvariantCultureIgnoreCase));
case SortMode.DateAdded:
return(otherSet.BeatmapSet.DownloadedAt.CompareTo(BeatmapSet.DownloadedAt));
}
}
public virtual void AddChild(CarouselItem i)
{
i.State.ValueChanged += state => ChildItemStateChanged(i, state.NewValue);
i.ChildID = ++currentChildID;
InternalChildren.Add(i);
}
public override void AddChild(CarouselItem i)
{
base.AddChild(i);
attemptSelection();
}
private void updateSelected(CarouselItem newSelection)
{
LastSelected = newSelection;
updateSelectedIndex();
}
public virtual int CompareTo(FilterCriteria criteria, CarouselItem other) => ChildID.CompareTo(other.ChildID);