/// <summary>
/// Invoked when a contact has published music information.
/// </summary>
/// <param name="jid">The JID of the XMPP entity that published the tune
/// information.</param>
/// <param name="item">The 'item' Xml element of the pubsub publish
/// event.</param>
void onTune(Jid jid, XmlElement item)
{
if (item == null || item["tune"] == null)
{
return;
}
var tune = item["tune"];
if (tune.IsEmpty)
{
// Raise the 'Tune' event without information.
Tune.Raise(this, new TuneEventArgs(jid));
return;
}
// Parse 'tune' element.
int length = 0;
if (tune["length"] != null)
{
length = Int32.Parse(tune["length"].InnerText);
}
int rating = 0;
if (tune["rating"] != null)
{
rating = Int32.Parse(tune["rating"].InnerText);
}
TuneInformation info = new TuneInformation(
GetField(tune, "title"), GetField(tune, "artist"), GetField(tune, "track"),
length, rating, GetField(tune, "source"), GetField(tune, "uri"));
// Raise the 'Tune' event.
Tune.Raise(this, new TuneEventArgs(jid, info));
}
/// <summary>
/// Publishes the specified music information to contacts on the user's
/// roster.
/// </summary>
/// <param name="tune">The tune information to publish.</param>
/// <exception cref="ArgumentNullException">The tune parameter is
/// null.</exception>
/// <exception cref="NotSupportedException">The server does not support the
/// 'Personal Eventing Protocol' extension.</exception>
/// <exception cref="XmppErrorException">The server returned an XMPP error code.
/// Use the Error property of the XmppErrorException to obtain the specific
/// error condition.</exception>
/// <exception cref="XmppException">The server returned invalid data or another
/// unspecified XMPP error occurred.</exception>
/// <remarks>Publishing no information (i.e. calling Publish without any parameters
/// is considered a "stop command" to disable publishing).</remarks>
public void Publish(TuneInformation tune)
{
tune.ThrowIfNull("tune");
Publish(tune.Title, tune.Artist, tune.Track, tune.Length,
tune.Rating, tune.Source, tune.Uri);
}
/// <summary>
/// Initializes a new instance of the TuneEventArgs class.
/// </summary>
/// <param name="jid">The JID of the XMPP entity that published the
/// tune information.</param>
/// <param name="information">The tune information to include as part of
/// the event.</param>
/// <exception cref="ArgumentNullException">The jid parameter is
/// null.</exception>
public TuneEventArgs(Jid jid, TuneInformation information = null)
{
jid.ThrowIfNull("jid");
Jid = jid;
Information = information;
}