public iCollectionViewCell CreateCell(string nib, GameObject owner = null)
{
//Check we have nib registered
if (!m_nibs.ContainsKey(nib))
{
throw new UnityException(string.Format("No Prefab registered for {0}", nib));
}
//Check pool
if (m_pools.ContainsKey(nib))
{
List <iCollectionViewCell> pool = m_pools[nib];
//Check for any not being used
foreach (iCollectionViewCell cell in pool)
{
if (!cell.IsActive)
{
cell.SetActive(true, owner);
return(cell);
}
}
}
else
{
//Make Pool
m_pools.Add(nib, new List <iCollectionViewCell>());
}
//No free cells, so make a new one
iCollectionViewCell c = m_nibs[nib].CreateCell();
c.SetActive(true, owner);
m_pools[nib].Add(c);
return(c);
}
/// <summary>
/// This handles reuse, it will work out the indices we need, add delete/add cell
/// as needed.
///
/// Call before layout
/// </summary>
/// <param name="data">Data - The whole data we are laying out.</param>
/// <param name="cells">Cells - The array of cells we will add/delete from as needed</param>
private void PrepareCells(List <object> data, List <iCollectionViewCell> cells)
{
int totCells = Math.Min(TotalCellsNeeded, data.Count);
int curIndex = (int)Math.Round(CurrentIndex);
int min = curIndex - (totCells / 2);
int max = curIndex + (totCells / 2);
if (!IndexWrap)
{
if (min < 0)
{
min = 0;
max = totCells;
}
else if (max >= data.Count)
{
max = data.Count;
min = max - totCells;
}
}
//GO through cells, any with an index we no longer need, turn off
int minVal = (min < 0) ? min + data.Count : min;
int maxVal = (max >= data.Count) ? max - data.Count : max;
if (!IndexWrap)
{
if (max >= data.Count)
{
maxVal = data.Count - 1;
minVal = maxVal - m_maxCells;
}
min = minVal;
max = maxVal;
}
for (int i = 0; i < cells.Count; i++)
{
iCollectionViewCell c = cells[i];
c.Snap = false;
//Bizzare annoyance,min and max can sometimes be the same, i.e. we have enough cells for all the data fine
if (maxVal == minVal)
{
continue;
}
//If maxval is bigger than minval then just check were in the range
if (maxVal > minVal && (c.Index <= maxVal && c.Index >= minVal))
{
continue;
}
//If min value is bigger than max were in a "wrap"
if (minVal > maxVal && (c.Index >= minVal || c.Index <= maxVal))
{
continue;
}
c.SetActive(false);
cells.Remove(c);
i--;
}
//Go through cells, add any indices we need and set their data TODO - How to do this quickly?
for (int i = min; i <= max; i++)
{
int index = i;
//Wrap index
if (index < 0)
{
index += data.Count;
}
else if (index >= data.Count)
{
index -= data.Count;
}
//Check if we have htis index
bool found = false;
foreach (iCollectionViewCell cell in cells)
{
if (cell.Index == index)
{
found = true;
//Set Data if null
if (cell.Data == null)
{
cell.SetData(data[index]);
}
break;
}
}
if (!found)
{
//Add a new one
iCollectionViewCell c = CellPoolService.Instance.CreateCell(NibInUse, gameObject);
c.transform.localPosition = Vector3.zero;
c.Index = index;
c.Snap = true;
c.SetData(data[index]);
if (OnCellClick != null)
{
c.OnClickEvent += OnCellClick;
}
cells.Add(c);
}
}
}