Abstracting WPF's TextCompositionEventArgs

ITextCompositionEventArgs.cs

public interface ITextCompositionEventArgs
{
    string Text { get; }
    bool Handled { get; set; }
}

TextCompositionEventArgsWrapper.cs

public class TextCompositionEventArgsWrapper : ITextCompositionEventArgs
{
    TextCompositionEventArgs innerArgs;

    /// <summary>
    /// Initializes a new instance of the TextCompositionEventArgsWrapper class.
    /// </summary>
    /// <param name="innerArgs"></param>
    public TextCompositionEventArgsWrapper(TextCompositionEventArgs innerArgs)
    {
        this.innerArgs = innerArgs;
    }

    public string Text { get { return innerArgs.Text; } }

    public bool Handled
    {
        get { return innerArgs.Handled; }
        set { innerArgs.Handled = value; }
    }
}