WPF Breadcrumb Folder TextBox

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace QuickZip.UserControls.Breadcrumb.Framework
{
    public interface IRoot
    {
        void Add(BreadcrumbItemBase folder);
        void Add(QuickZip.UserControls.Breadcrumb.Framework.BreadcrumbItemBase.PathType pt, string folderPath);
        void Add(string folderDisplayPath);
        void AddSeparator();
        void AddRoot();
        void ClearAll();        
    }

    public interface IExpander
    {
        void ExpanderAdd(BreadcrumbItemBase folder);
        void ExpanderRemove(BreadcrumbItemBase folder);
        void ExpanderClear();
    }
}