private void RegisterCommands()
{
//create commands
OpenNowPlaying = new Command((parameter) =>
{
//display the Now Playing component
Component = new NowPlayingUserControl();
});
//open collection view
OpenCollection = new Command((parameter) =>
{
//display the collection component
Component = new CollectionUserControl();
});
//create commands
OpenEqualizer = new Command((parameter) =>
{
//display the equalizer component
Component = new EqualizerUserControl();
});
//open visualizer
OpenVisualizer = new Command((parameter) =>
{
//display the visualizer component
Component = new VisualizerUserControl(this);
});
//play or pause
Play = new Command((parameter) =>
{
//play or pause the song
App.SoundEngine.PlayOrPause(null);
});
//stop
Stop = new Command((parameter) =>
{
//cancel visualization task
_visTimer.Stop();
App.SoundEngine.Stop();
});
//prev
Prev = new Command((parameter) =>
{
App.SoundEngine.PlayPrev();
});
//next
Next = new Command((parameter) =>
{
App.SoundEngine.PlayNext();
});
}
public MainWindowViewModel(MainWindow window)
{
Window = window;
//set the initial component to be the collection
Component = new CollectionUserControl();
//create timer. we are using timer because it performs better than a thread in
//in this case. uses less CPU.
_visTimer = new DispatcherTimer();
_visTimer.Interval = new TimeSpan(0, 0, 0, 0, 25);
_visTimer.Tick += new EventHandler((sender, e) =>
{
RenderVisualization();
});
//hook up properties
App.SoundEngine.PropertyChanged += SoundEngine_PropertyChanged;
App.SoundEngine.PlaybackStatusChanged += SoundEngine_PlaybackStatusChanged;
//create commands
RegisterCommands();
}
