(Hybrid Smart Client) RSS Media Player

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using RSSVideoPlayer.Data;
using RSSVideoPlayer.Model;
using System.Windows.Controls;
namespace RSSVideoPlayer.ViewModel
{
    class RSSViewModel : TabViewModel
    {
        private List<FeedItem> _Articals;
       
        public RSSViewModel()
        {
            base.TabName = "RSS Items";
            _Articals = new RSSRepository("http://windowsclient.net/blogs/MainFeed.aspx?GroupID=11&Type=AllBlogs").GetFeedItems;
        }


        #region "Properties"

        private string _RSSURL;
        public string RSSURL
        {
            get { return _RSSURL; }
            set { 
                _RSSURL = value;
                _Articals = new RSSRepository(_RSSURL).GetFeedItems;
                OnPropertyChanged("Articals");
                OnPropertyChanged("RSSURL");
            }
        }

        public List<FeedItem> Articals
        {
            get { return _Articals; }
        }
        public List<MediaItem> MediaItems
        {
            get { return SelectedArtical.MediaItems; }
        }

        private FeedItem _SelectedArtical;
        public FeedItem SelectedArtical
        {
            get { return _SelectedArtical; }
            set
            {
                _SelectedArtical = value;
                OnPropertyChanged("SelectedArtical");
                 OnPropertyChanged("SelectedMedia");
                 OnPropertyChanged("MediaItems");
            }
        }

        private MediaItem _SelectedMedia;
        public MediaItem SelectedMedia
        {
            get { return _SelectedMedia; }
            set
            {
                _SelectedMedia = value;
                OnPropertyChanged("SelectedMedia");
                OnNewMedia(SelectedMedia.FullURL);
            }
        }

        public List<ComboBoxItem> SavedURLS
        {
            get
            {
                List<ComboBoxItem> lst = new List<ComboBoxItem>();

                foreach (string s in Properties.Settings.Default.RSSURLS)
                {
                    ComboBoxItem cmb = new ComboBoxItem();
                    cmb.Content = s;
                    lst.Add(cmb);
                }
                return lst;
            }
        }

        #endregion

        public event EventHandler<Common.MediaChangedEventArgs> NewMediaItem;
        private void OnNewMedia(string Media)
        {
            if (NewMediaItem != null)
                NewMediaItem(this,new RSSVideoPlayer.Common.MediaChangedEventArgs(Media));
        }


    }
}