Catrobat.IDE.WindowsPhone.Controls.FormulaControls.FormulaViewer.MoveCaret C# (CSharp) Method

        private void MoveCaret(int oldIndex, int newIndex)
        {
            // see FormulaViewer_OnLoaded
            if (!IsLoaded) return;

            if (oldIndex == newIndex) return;
            
            if (oldIndex != -1)
            {
                var element = Children.ElementAtOrDefault(newIndex);
                if (element == Caret) return;
                if (oldIndex != -1) Children.RemoveAt(oldIndex);
            }

            Children.Insert(newIndex, Caret);
        }