private void load()
{
selectionBox = composer.CreateSelectionBox();
selectionBox.DeselectAll = deselectAll;
var dragBox = new DragBox(select);
dragBox.DragEnd += () => selectionBox.UpdateVisibility();
InternalChildren = new[]
{
dragBox,
selectionBox,
selectionBlueprints = new SelectionBlueprintContainer {
RelativeSizeAxes = Axes.Both
},
placementBlueprintContainer = new Container <PlacementBlueprint> {
RelativeSizeAxes = Axes.Both
},
dragBox.CreateProxy()
};
foreach (var obj in composer.HitObjects)
{
AddBlueprintFor(obj);
}
}
/// <summary>
/// Updates whether this <see cref="SelectionHandler{T}"/> is visible.
/// </summary>
private void updateVisibility()
{
int count = SelectedItems.Count;
SelectionBox.Text = count > 0 ? count.ToString() : string.Empty;
SelectionBox.FadeTo(count > 0 ? 1 : 0);
OnSelectionChanged();
}