private void MoveCellLastToFirst()
{
if (itemsLinkedList.Count == 0)
{
return;
}
ReuseItem lastCell = itemsLinkedList.Last.Value;
ReuseItem firstCell = itemsLinkedList.First.Value;
UpdateItem(lastCell, firstCell.DataIndex - 1);
if (ScrollDirection == Direction.Vertical)
{
lastCell.Bottom = firstCell.Top + Spacing;
lastCell.SetOffsetHorizontal(0, 0);
}
else if (ScrollDirection == Direction.Horizontal)
{
lastCell.Right = firstCell.Left - Spacing;
lastCell.SetOffsetVertical(0, 0);
}
itemsLinkedList.RemoveLast();
itemsLinkedList.AddFirst(lastCell);
}
private void MoveCellFirstToLast()
{
if (itemsLinkedList.Count == 0)
{
return;
}
ReuseItem firstCell = itemsLinkedList.First.Value;
ReuseItem lastCell = itemsLinkedList.Last.Value;
UpdateItem(firstCell, lastCell.DataIndex + 1);
if (ScrollDirection == Direction.Vertical)
{
firstCell.Top = lastCell.Bottom - Spacing;
firstCell.SetOffsetHorizontal(0, 0);
}
else if (ScrollDirection == Direction.Horizontal)
{
firstCell.Left = lastCell.Right + Spacing;
firstCell.SetOffsetVertical(0, 0);
}
itemsLinkedList.RemoveFirst();
itemsLinkedList.AddLast(firstCell);
}
private void UpdateItem(ReuseItem cell, int index)
{
cell.DataIndex = index;
if (cell.DataIndex >= 0 && cell.DataIndex < itemDataList.Count)
{
cell.UpdateSetDataToItem(itemDataList[cell.DataIndex]);
cell.gameObject.SetActive(true);
}
else
{
cell.gameObject.SetActive(false);
}
}
private void CreateItem(int index)
{
ReuseItem reuseItem = Instantiate(itemObject).GetComponent <ReuseItem>();
reuseItem.SetAnchors(scrollRect.content.anchorMin, scrollRect.content.anchorMax);
reuseItem.transform.SetParent(scrollRect.content.transform, false);
UpdateItem(reuseItem, index);
if (ScrollDirection == Direction.Vertical)
{
reuseItem.Top = (itemsLinkedList.Count > 0 ? itemsLinkedList.Last.Value.Bottom - Spacing : 0);
reuseItem.SetOffsetHorizontal(0, 0);
}
else if (ScrollDirection == Direction.Horizontal)
{
reuseItem.Left = (itemsLinkedList.Count > 0 ? itemsLinkedList.Last.Value.Right + Spacing : 0);
reuseItem.SetOffsetVertical(0, 0);
}
itemsLinkedList.AddLast(reuseItem);
}
