public void ShiftWindowDown()
{
// попадает ли хвост в диапазон и отправлен ли запрос
if (!(_currentBindRequest is BindNextRequest) && _bindings.ContainsFromTail(_preBoundaryThreshold, _window.Last.Value.LinkedData))
{
_currentBindRequest = new BindNextRequest(this);
_currentBindRequest.Execute();
}
var next = _bindings.Find(_window.Last.Value.LinkedData).Next;
// while scrolling up (moving down)
if (next == null)
{
var measureCutting = new Straight {
Direction = GrowDirection
};
VectorGeneric2 firstIntersection;
VectorGeneric2 lastIntersection;
VectorGeneric2 boundIntersection;
_window.First.Value.RectTransform.GetIntersectionInParentSpace(measureCutting, out firstIntersection);
_window.Last.Value.RectTransform.GetIntersectionInParentSpace(measureCutting, out lastIntersection);
RectTransform.GetIntersectionInLocalSpace(measureCutting, out boundIntersection);
if (boundIntersection.Direction.sqrMagnitude < (lastIntersection.Target - firstIntersection.Origin).sqrMagnitude)
{
CarrierFactory.SetBumperCoDirection(this);
}
else
{
CarrierFactory.SetBumperCounterDirection(this);
}
return;
}
_itemFactory.Put(_window.First.Value);
_window.RemoveFirst();
var cutting = new Straight {
Direction = GrowDirection,
};
VectorGeneric2 intersection;
var item = _itemFactory.Get(next.Value);
// TODO: one record cause en error here
_window.Last.Value.RectTransform.GetIntersectionInParentSpace(cutting, out intersection);
_window.AddLast(item);
item.RectTransform.anchoredPosition = intersection.Target;
if (ReferenceEquals(item.LinkedData, _bindings.Last.Value))
{
OnCoDirectionBoundReach();
}
}
public void ShiftWindowUp()
{
if (VisibleWindow.TryShiftUp())
{
if (_chain.First.IsUpperHalf(_chain.First))
{
_chain.LoadPreviousPage();
}
}
else
{
if (_chain.IsUpperLimit)
{
CarrierFactory.SetBumperCoDirection(this);
}
else
{
CarrierFactory.Suspend();
}
}
}