/// <summary>
///helper method that removes a button and places it in the inactive pool
/// </summary>
/// <param name="br"></param>
/// <param name="columnId"></param>
private void RemoveButton(ButtonRow br, int columnId)
{
IterableButton removedButton = br.RemoveButton(columnId);
//update its navigation
InactiveButtonPool.Add(removedButton);
removedButton.transform.SetAsLastSibling();
UpdateNavigationAfterButtonRemove(removedButton);
}
/// <summary>
/// If the field Button prefab is set to null, create a generic button, returning its IterableButton component
/// </summary>
/// <param name="rowId"></param>
/// <param name="columnId"></param>
/// <returns></returns>
private IterableButton BuildIterableButton(int rowId, int columnId)
{
//lets check the inactive pool first
if (InactiveButtonPool.Count == 0)
{
if (ButtonPrefab == null)
{
var emptyGameObject = new GameObject("Button");
emptyGameObject.transform.SetParent(ParentRectTransform);
emptyGameObject.AddComponent <Image>();
Button button = emptyGameObject.AddComponent <Button>();
ColorBlock colors = button.colors;
colors.highlightedColor = HighlightedButtonColor;
button.colors = colors;
IterableButton b = emptyGameObject.AddComponent <IterableButton>();
b.Init(rowId, columnId, button);
b.transform.SetAsLastSibling();
return(b);
}
{
try
{
GameObject go = Instantiate(ButtonPrefab);
go.transform.SetParent(ParentRectTransform);
IterableButton b = go.AddComponent <IterableButton>();
Button button = GetComponent <Button>();
ColorBlock colors = button.colors;
colors.highlightedColor = HighlightedButtonColor;
button.colors = colors;
b.Init(rowId, columnId, button);
b.transform.SetAsLastSibling();
return(b);
}
catch (NoButtonAttachedToPrefabException ex)
{
Debug.Log(ex.StackTrace);
throw;
}
}
}
else //return one of the iterable buttons in the pool
{
IterableButton b = InactiveButtonPool[0];
b.Activate();
b.transform.SetAsLastSibling();
b.SetRowAndColumnIndex(rowId, columnId);
InactiveButtonPool.RemoveAt(0);
return(b);
}
}
