public virtual DisplayObjectX addChildAt(DisplayObjectX child, int index)
{
int numChildren = mChildren.Count;
if (index >= 0 && index <= numChildren)
{
if (child.parent == this)
{
setChildIndex(child, index); // avoids dispatching events
}
else
{
child.removeFromParent();
// 'splice' creates a temporary object, so we avoid it if it's not necessary
if (index == numChildren)
{
mChildren.Add(child);
}
else
{
mChildren.Insert(index, child);
}
child.setParent(this);
//child.dispatchEventWith(EventX.ADDED, true);
if (stage != null)
{
DisplayObjectContainerX container = child as DisplayObjectContainerX;
if (container != null)
{
//递归上去;
//container.simpleDispatch(EventX.ADDED_TO_STAGE);
}
else
{
child.simpleDispatch(EventX.ADDED_TO_STAGE);
}
}
}
return(child);
}
else
{
throw new RankException();
}
}
public DisplayObjectX removeChildAt(int index, bool dispose = false)
{
if (index >= 0 && index < numChildren)
{
DisplayObjectX child = mChildren[index];
child.simpleDispatch(EventX.REMOVED);
if (stage != null)
{
DisplayObjectContainerX container = child as DisplayObjectContainerX;
if (container != null)
{
container.broadcastEventWith(EventX.REMOVED_FROM_STAGE);
}
else
{
child.simpleDispatch(EventX.REMOVED_FROM_STAGE);
}
}
child.setParent(null);
index = mChildren.IndexOf(child);
if (index >= 0)
{
mChildren.RemoveAt(index);
}
if (dispose)
{
child.dispose();
}
return(child);
}
else
{
throw new RankException("Invalid child index");
}
}