/// <summary>
/// Creates new item cells as needed, based on the panel's current bounds.
/// This will reset the scrollview's position.
/// </summary>
public void RebuildItems()
{
float size = ScrollView.movement == UIScrollView.Movement.Horizontal ? ItemSize.x : ItemSize.y;
float panelSize = GetPanelSize();
int itemCount = (Mathf.CeilToInt(panelSize / size) + 2) * groupSize;
// Create missing items if needed.
for (int i = items.Count; i < itemCount; i++)
{
ScrollerItem item = (
Prefab != null ?
NGUITools.AddChild(gameObject, Prefab).GetComponent <ScrollerItem>() :
Instantiator()
);
item.Initialize();
items.Add(item);
}
// Toggle items on/off based on whether the item is pooled more than what we need to display.
for (int i = 0; i < items.Count; i++)
{
items[i].Object.SetActive(i < totalSize);
}
// Reset scrollview position
ResetPosition();
}
/// <summary>
/// Updates the specified item by invoking the item update event.
/// </summary>
void UpdateItem(ScrollerItem item)
{
// If index is out of bounds, we don't fire the event.
if (item.Index < 0 || item.Index >= totalSize)
{
item.Object.SetActive(false);
return;
}
item.Object.SetActive(true);
if (OnItemUpdate != null)
{
OnItemUpdate(item);
}
}
