using System;
 
namespace System.Windows.Media
{
    internal class AncestorChangedEventArgs
    {
        public AncestorChangedEventArgs(DependencyObject subRoot, DependencyObject oldParent)
        {
            _subRoot = subRoot;
            _oldParent = oldParent;
        }
 
        public DependencyObject Ancestor
        {
            get { return _subRoot; }
        }
 
        public DependencyObject OldParent
        {
            get { return _oldParent; }
        }
        
        private DependencyObject _subRoot;     // direct child of the changed link.
        private DependencyObject _oldParent;   // If link is cut; otherwise null.
    }
}