public DisplayObject AddChildAt(DisplayObject child, int index)
{
int numChildren = _children.Count;
if (index >= 0 && index <= numChildren)
{
if (child.parent == this)
{
SetChildIndex(child, index);
}
else
{
child.RemoveFromParent();
if (index == numChildren)
{
if (_isRendering)
{
CacheAddList(_children.Count, child);
}
else
{
_children.Add(child);
}
}
else
{
if (_isRendering)
{
CacheAddList(index, child);
}
else
{
_children.Insert(index, child);
}
}
child.SetParent(this);
if (stage != null)
{
Container container = child as Container;
if (container != null)
{
container.BroadcastEvent(sHelperEvent1);
container.onAddedToStage.BroadcastCall();
}
else
{
child.DispatchEventObsolete(sHelperEvent1);
child.onAddedToStage.Call();
}
}
}
return(child);
}
else
{
throw new Exception("Invalid child index");
}
}
public DisplayObject RemoveChildAt(int index)
{
if (index >= 0 && index < _children.Count)
{
DisplayObject child = _children[index];
if (stage != null)
{
Container container = child as Container;
if (container != null)
{
container.BroadcastEvent(sHelperEvent2);
container.onRemovedFromStage.BroadcastCall();
}
else
{
child.DispatchEventObsolete(sHelperEvent2);
child.onRemovedFromStage.Call();
}
}
if (_isRendering)
{
_cahcheRemoveList.Add(child);
}
else
{
_children.Remove(child);
}
child.SetParent(null);
return(child);
}
else
{
throw new Exception("Invalid child index");
}
}
