public GeometryViewModel()
{
Geometries = AUTDSettings.Instance.GeometriesReactive;
Current = new ReactivePropertySlim <GeometrySettingReactive?>();
AddItem = new ReactiveCommand();
RemoveItem = Current.Select(c => c != null).ToReactiveCommand();
UpItem = Current.Select(c => c != null && c.No.Value != 0).ToReactiveCommand();
DownItem = Current.Select(c => c != null && c.No.Value != Geometries.Count - 1).ToReactiveCommand();
AddItem.Subscribe(_ =>
{
var item = new GeometrySettingReactive(Geometries.Count);
Geometries.Add(item);
Current.Value = item;
});
RemoveItem.Subscribe(_ =>
{
if (Current.Value == null)
{
return;
}
var delNo = Current.Value.No.Value;
Geometries.RemoveAt(delNo);
ResetNo();
Current.Value = Geometries.Count > delNo ? Geometries[delNo] : Geometries.Count > 0 ? Geometries[delNo - 1] : null;
});
UpItem.Subscribe(_ =>
{
if (Current.Value == null)
{
return;
}
var cNo = Current.Value.No.Value;
var up = Geometries[cNo - 1];
Geometries.Insert(cNo - 1, Current.Value);
Geometries.RemoveAt(cNo);
Geometries[cNo] = up;
ResetNo();
Current.Value = Geometries[cNo - 1];
});
DownItem.Subscribe(_ =>
{
if (Current.Value == null)
{
return;
}
var cNo = Current.Value.No.Value;
var down = Geometries[cNo + 1];
Geometries.RemoveAt(cNo + 1);
Geometries.Insert(cNo + 1, Current.Value);
Geometries[cNo] = down;
ResetNo();
Current.Value = Geometries[cNo + 1];
});
}