cadencii.EditorManager.Undo C# (CSharp) Method

        public void Undo() {
            ICommand run = s_current;
            ICommand rev = VsqFile.executeCommand( run );
            for ( int i = 0; i < s_current.Child.Count; i++ ) {
                s_current.Child[i].Parent = rev;
                rev.Child.Add( s_current.Child[i] );
            }
            rev.Parent = s_current.Parent;
            for ( int i = 0; i < s_current.Parent.Child.Count; i++ ) {
                if ( Object.ReferenceEquals( s_current, s_current.Parent.Child[i] ) ) {
                    s_current.Parent.Child[i] = rev;
                    break;
                }
            }
            s_current = s_current.Parent;
        }