Improving WPF Mouse Wheel Processing

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Windows;

namespace Logitech.Windows.MotionFlow
{
  #region IMotionElementInput
  public interface IMotionElementInput : IInputElement { }
  #endregion

  #region IMotionElement
  public interface IMotionElement : IMotionElementInput
  {
    int      Id { get; }
    string Name { get; set; }
  }
  #endregion

  #region MotionElement
  public class MotionElement : ContentElement, IMotionElement
  {
    #region Static
    
    #region Fields
    private static int _refCount;
    #endregion

    #region Methods
    public static string TransmitMethodSuffix(IMotionInfo info, int nativeDelta)
    {
      return nativeDelta == 0 || Math.Sign(nativeDelta) == info.NativeDirection ? "++" : "--";
    }
    #endregion

    #endregion

    #region Instance

    #region Initialization
    public MotionElement()
    {
      Id = ++_refCount;
      Name = Id.ToString("'M'00");
    }
    #endregion

    #region Object
    public override string ToString() { return Name; }
    #endregion

    #region IMotionElement
    public int      Id { get; protected set; }
    public string Name { get; set; }
    #endregion

    #endregion
  }
  #endregion

  #region MotionElementLink
  public class MotionElementLink : MotionElement
  {
    #region Fields
    private IMotionElementInput _next;
    #endregion

    #region Methods
    [DebuggerStepThrough]
    protected IMotionElementInput GetNext(bool setParent = true)
    {
      if (setParent)
        _next.SetParent(this);
      return _next;
    }
    [DebuggerStepThrough]
    protected void SetNext(IMotionElementInput value, bool setParent = true)
    {
      _next = value;
      if (setParent)
        value.SetParent(this);
    }
    #endregion
  }
  #endregion

  #region MotionElementExtensions
  public static class MotionElementExtensions
  {
    public static void SetParent(this IMotionElementInput reference, DependencyObject parent)
    {
      if (reference is ContentElement)
        ContentOperations.SetParent(reference as ContentElement, parent);
      else
        throw new ArgumentException("Given reference is not a ContentElement");
    }
  }
  #endregion
}