protected override void UnregisterCallbacksFromTarget()
{
target.UnregisterCallback <MouseOverEvent>(OnMouseOver);
target.UnregisterCallback <MouseOutEvent>(OnMouseOut);
ResetInsertLocation();
m_InsertLocation = null;
}
protected override void RegisterCallbacksOnTarget()
{
if (!(target is VisualElement && target is IInsertLocation))
{
throw new InvalidOperationException("Manipulator can only be added to an IInsertLocation VisualElement");
}
m_InsertLocation = target as IInsertLocation;
target.RegisterCallback <MouseOverEvent>(OnMouseOver);
target.RegisterCallback <MouseOutEvent>(OnMouseOut);
}
