(Hybrid Smart Client) RSS Media Player

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using RSSVideoPlayer.Model;
using System.Collections.ObjectModel; 
using RSSVideoPlayer.Common;
using System.Windows.Input;
using System.IO;
using Microsoft.Win32;

namespace RSSVideoPlayer.ViewModel
{
    class LibraryViewModel : TabViewModel
    {
        private MediaItem  _MediaItems;
        private Data.LibraryRepository repository;
        public LibraryViewModel()
        {
            repository = new RSSVideoPlayer.Data.LibraryRepository();
            base.TabName = "Library";
         
        }
        public LibraryViewModel(string StartingFolder)
        {
            repository = new RSSVideoPlayer.Data.LibraryRepository(StartingFolder);
            base.TabName = "Library";
        }

        public string FolderPath
        {
            get { return repository.FilePath; }
            set 
            { 
                repository.FilePath = value; 
                repository = new RSSVideoPlayer.Data.LibraryRepository(FolderPath);
                OnPropertyChanged("MediaItems");
            }
        }

        public ObservableCollection<MediaItem> MediaItems
        { get { return repository.MediaItems; }}

        private MediaItem _selectedItem;
        public MediaItem SelectedItem
        {
            get {return _selectedItem; }
            set { _selectedItem = value; OnMediaChanged(SelectedItem.file); }
        }




        #region "Commands"
        private RelayCommand _cmdDirectory;

        public ICommand cmdDirectory
        {
            get
            {
                if (_cmdDirectory == null)
                    _cmdDirectory = new RelayCommand(param => this.ShowDirectory());
                return _cmdDirectory;
            }
        }

        public void ShowDirectory()
        {
            OpenFileDialog flDlg = new OpenFileDialog();
            flDlg.InitialDirectory = FolderPath;
            flDlg.Title = "Please choose a folder";
            flDlg.CheckFileExists = false;

            flDlg.FileName = "[Get Folder…]";
            flDlg.Filter = "Folders|no.files";

            if ((bool)flDlg.ShowDialog())
            {
                string path = System.IO.Path.GetDirectoryName(flDlg.FileName);
                if (path != null && path.Length > 0)
                {
                    FolderPath = path;
                    OnPropertyChanged("FolderPath");
                }
            }
        }
      

        #endregion

        #region "Media changing event"
        public void OnMediaChanged(string MediaSource)
        {
            if (MediaChanged != null)
                MediaChanged(this, new Common.MediaChangedEventArgs(MediaSource));
        }
        public event EventHandler<Common.MediaChangedEventArgs> MediaChanged;
        #endregion
    }
}