public void Select(WheelItem item)
{
//update the current selection with the new middle
_curSelection = item.ItemIndex;
//call OnValueChange
OnValueChange(item.ItemIndex, item.ItemText);
}
/// <summary>
/// Init the wheel. Instantiates itemCount wheelItemPrefabs and puts them in the right position.
/// Then populates the visible wheelItems by calling SetData.
/// </summary>
/// <param name="choices">A list of all the possible values (strings) on the wheel</param>
public void Init(params string[] choices)
{
if (_items == null)
{
_items = new List <WheelItem>();
}
if (_sr == null)
{
_sr = GetComponent <ScrollRect>();
}
prefabHeight = (wheelItemPrefab.transform as RectTransform).sizeDelta.y;
itemData = choices;
//create itemCount wheelItemPrefabs and put them in the right positions.
int start = -(itemCount - 1) / 2;
int end = (itemCount + 1) / 2;
for (int i = start; i < end; i++)
{
WheelItem wi = AddWheelItem(i);
_items.Add(wi);
}
SetData(choices);
}
/// <summary>
/// Instatiate a WheelItem (based on wheelItemPrefab) and adds it to content.transform
/// </summary>
/// <param name="offset">Offset the item height in offset * prefabHeight from the center.</param>
/// <returns>The newly initiated WheelItem</returns>
protected WheelItem AddWheelItem(int offset)
{
wheelItemPrefab.SetActive(true);
GameObject go = (GameObject)Instantiate(wheelItemPrefab);
go.name = offset.ToString();
RectTransform r = go.GetComponent <RectTransform>();
r.SetParent(content.transform, false);
go.transform.localPosition = new Vector2(0, -(offset) * prefabHeight);
WheelItem wi = go.GetComponent <WheelItem>();
wheelItemPrefab.SetActive(false);
return(wi);
}
