/// <summary>
/// Checks if track changed.
/// </summary>
protected void CheckIfTrackChanged()
{
Track currentTrack = Spotify.GetCurrentTrack();
if (currentTrack == null && !Spotify.IsAvailable())
{
//First stop the hook to prevent multiple occurences of popup.
if (objectNameChangeHook != null)
{
objectNameChangeHook.Stop();
}
//show error no spotify, stop running?
MessageBox.Show("Error Spotify is not running, Spotify Notifier will now exit.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
Application.Current.Shutdown();
}
else if ((track == null && currentTrack != null) || (track != null && currentTrack != null && !track.Equels(currentTrack)))
{
track = currentTrack;
if (TrackChanged != null)
{
TrackChanged(this, new EventArgs());
}
}
else
{
track = currentTrack;
}
}
/// <summary>
/// Gets the cover URL.
/// </summary>
/// <param name="track">The track.</param>
/// <returns>A cover url if succesfull; otherwise the url points to /Resources/Icon.ico</returns>
public static string GetCoverUrl(Track track)
{
string coverUrl = "/Resources/Icon.ico";
string url = "http://ws.audioscrobbler.com/2.0/?method=track.getInfo&api_key=" + apiKey;
url += "&artist=" + track.Artist;
url += "&track=" + track.Title;
Uri uri = new Uri(url);
try
{
XPathDocument doc = new XPathDocument(uri.AbsoluteUri);
XPathNavigator nav = doc.CreateNavigator();
if (nav.SelectSingleNode("/lfm/track/album/image[@size='small']") != null)
{
coverUrl = nav.SelectSingleNode("/lfm/track/album/image[@size='small']").Value;
}
}
catch (System.Net.WebException)
{
//Ignore web exceptions.
}
return coverUrl;
}
/// <summary>
/// Gets the current track.
/// </summary>
/// <returns>A <c>Track</c> if it can be found.</returns>
public static Track GetCurrentTrack()
{
Track track = null;
if (Spotify.IsAvailable())
{
//Get the Spotify handle
IntPtr handle = GetHandle();
//Get the length of the window text
int length = GetWindowTextLength(handle);
//Get the window text
StringBuilder sb = new StringBuilder(length + 1);
GetWindowText(handle, sb, sb.Capacity);
string windowText = sb.ToString();
//Remove prefix "Spotify - " + trim the string
windowText = windowText.Replace("Spotify - ", "").Trim();
string[] windowTextSplit = windowText.Split('\u2013'); //Spotify uses an en dash to separate Artist and Title (Thank you Toastify)
if (windowTextSplit.Length == 2)
{
track = new Track
{
Artist = windowTextSplit[0].Trim(),
Title = windowTextSplit[1].Trim()
};
}
}
return track;
}
/// <summary>
/// Initializes a new instance of the <see cref="TrackNotificationBalloon"/> class.
/// </summary>
/// <param name="track">The track.</param>
public TrackNotificationBalloon(Track track)
: this()
{
this.SetTrack(track);
}
/// <summary>
/// Sets the track.
/// </summary>
/// <param name="track">The track.</param>
public void SetTrack(Track track)
{
Title = track.Title;
Artist = track.Artist;
Cover = track.CoverUrl;
}
/// <summary>
/// Checks if the specified track Equelses this track instance.
/// </summary>
/// <param name="track">The track.</param>
/// <returns><c>true</c> if equel; otherwise false.</returns>
/// <remarks>Does not look at the <c>CoverUrl</c></remarks>
internal bool Equels(Track track)
{
return this.Title.Equals(track.Title, StringComparison.OrdinalIgnoreCase) && this.Artist.Equals(track.Artist, StringComparison.OrdinalIgnoreCase);
}