/// <summary>
/// Starts or stops monitoring of the AssociatedObject's logical children.
/// </summary>
/// <param name="add"></param>
private void AddOrRemoveLogicalChildren(bool add)
{
if (_window != null && _window.IsInitialized)
{
AddOrRemoveSizeChangedHandlers(false);
_elements.Clear();
if (add)
{
_elements.AddRange(VisualHelper.FindLogicalChildren <FrameworkElement>(this.AssociatedObject));
}
_elements.Add(this.AssociatedObject);
AddOrRemoveSizeChangedHandlers(true);
}
}