/// <summary>
/// Removes the item data.
/// </summary>
/// <param name="index">Index.</param>
public void RemoveAtItemData(int index)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException(nameof(index), "Index is out of range.");
}
if (index > _itemSizeList.Count)
{
throw new ArgumentException("Deleted range is out of range.");
}
var itemIndex = CurrentItemIndex;
var itemSizeList = _itemSizeList.ToArray();
InnerInfiniteScrollItemRepository.RemoveAt(index);
_itemSizeList.RemoveAt(index);
if (itemIndex == index)
{
MovePositionAt(Math.Min(_itemSizeList.Count - 1, index));
}
else if (itemIndex > index)
{
var removeSize = itemSizeList[index] + itemInterval;
MovePosition(CurrentPosition - removeSize);
}
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Removes the range item data.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="count">Count.</param>
public void RemoveRangeItemData(int index, int count)
{
if (index < 0)
{
throw new ArgumentOutOfRangeException(nameof(index), "Index is out of range.");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count), "Count is out of range.");
}
if ((count + index) > _itemSizeList.Count)
{
throw new ArgumentException("Deleted range is out of range.");
}
var itemIndex = CurrentItemIndex;
var itemSizeList = _itemSizeList.ToArray();
InnerInfiniteScrollItemRepository.RemoveRange(index, count);
_itemSizeList.RemoveRange(index, count);
if (itemIndex >= index && itemIndex <= index + count - 1)
{
MovePositionAt(Math.Min(_itemSizeList.Count - 1, index));
}
else if (itemIndex > index)
{
var itemSizeRange = new float[count];
Array.Copy(itemSizeList, index, itemSizeRange, 0, count);
var removeSize = itemSizeRange.Sum() + itemInterval * (count);
MovePosition(CurrentPosition - removeSize);
}
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Adds the item data.
/// </summary>
/// <param name="data">Data.</param>
public void AddItemData(object data)
{
InnerInfiniteScrollItemRepository.Add(data);
_itemSizeList.Add(defaultItemSize);
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Clears the item data.
/// </summary>
public void ClearItemData()
{
InnerInfiniteScrollItemRepository.Clear();
_itemSizeList.Clear();
MovePositionAt(0);
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Adds the range item data.
/// </summary>
/// <param name="data">Data.</param>
public void AddRangeItemData(IEnumerable <object> data)
{
var item = data.ToArray();
InnerInfiniteScrollItemRepository.AddRange(item);
_itemSizeList.AddRange(Enumerable.Repeat(defaultItemSize, item.Length));
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Sets the item data.
/// </summary>
/// <param name="data">Data.</param>
public void SetItemData(IEnumerable <object> data)
{
InnerInfiniteScrollItemRepository.Clear();
InnerInfiniteScrollItemRepository.AddRange(data ?? new object[0]);
_itemSizeList = Enumerable.Repeat(defaultItemSize, InnerInfiniteScrollItemRepository.Count).ToList();
MovePositionAt(0);
UpdateContents();
_isUpdateCanvasRequest = true;
}
private void UpdateBinder()
{
var data = InnerInfiniteScrollItemRepository.ToArray();
var itemSizeList = _itemSizeList.ToArray();
var fullSize = itemSizeList.Sum() + Mathf.Max(itemSizeList.Length - 1, 0f) * itemInterval;
for (var i = 0; i < InfiniteScrollBinders.Length; i++)
{
var index = i;
var infiniteScrollBinder = InfiniteScrollBinders[index];
if (_currentBinderIndex > index)
{
index = instantiatedItemCount + index;
}
var itemIndex = CurrentItemIndex + index - _currentBinderIndex;
float pos;
if (data.Length <= itemIndex || itemIndex < 0)
{
infiniteScrollBinder.Hide();
if (itemIndex < 0)
{
pos = -((itemInterval + defaultItemSize) * (0 - itemIndex));
}
else
{
pos = fullSize + (itemIndex - data.Length) * defaultItemSize +
(itemIndex - data.Length + 1) * itemInterval;
}
}
else
{
infiniteScrollBinder.UpdateItemData(data[itemIndex], itemIndex);
var itemSizeRange = new float[itemIndex];
Array.Copy(itemSizeList, 0, itemSizeRange, 0, itemIndex);
pos = itemSizeRange.Sum() + itemInterval * itemIndex;
}
if (!isReverse)
{
pos = pos * -1;
}
switch (direction)
{
case Direction.Vertical:
infiniteScrollBinder.UpdateItemPosition(new Vector2(0, pos));
break;
case Direction.Horizontal:
infiniteScrollBinder.UpdateItemPosition(new Vector2(pos * -1, 0));
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
/// <summary>
/// Inserts the item data.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="data">Data.</param>
public void InsertItemData(int index, object data)
{
InnerInfiniteScrollItemRepository.Insert(index, data);
_itemSizeList.Insert(index, defaultItemSize);
if (CurrentItemIndex >= index)
{
MovePosition(CurrentPosition + defaultItemSize + itemInterval);
}
UpdateContents();
_isUpdateCanvasRequest = true;
}
/// <summary>
/// Inserts the range item data.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="data">Data.</param>
public void InsertRangeItemData(int index, IEnumerable <object> data)
{
var item = data.ToArray();
InnerInfiniteScrollItemRepository.InsertRange(index, item);
_itemSizeList.InsertRange(index, Enumerable.Repeat(defaultItemSize, item.Length));
if (CurrentItemIndex >= index)
{
var addSize = (defaultItemSize + itemInterval) * item.Length;
MovePosition(CurrentPosition + addSize);
}
UpdateContents();
_isUpdateCanvasRequest = true;
}