public MediaBrowserViewModel(IMediaLibraryBrowser mediaLibraryBrowser, Settings settings,
LoginFormViewModel loginFormViewModel, IMixViewModelFactory mixViewModelFactory)
{
this.settings = settings;
this.mixViewModelFactory = mixViewModelFactory;
this.mediaLibraryBrowser = mediaLibraryBrowser;
GetRecentlyMadeMixes = new ReactiveAsyncCommand(null, 1);
GetRecentlyMadeMixes.RegisterAsyncFunction(
_ => mediaLibraryBrowser.GetRecentlyMadeMixes(CreateMixFilter(Filter)))
.Subscribe(SetBrowsedMixes);
GetHotMixes = new ReactiveAsyncCommand(null, 1);
GetHotMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetHotMixes(CreateMixFilter(Filter))).Subscribe(
SetBrowsedMixes);
GetPopularMixes = new ReactiveAsyncCommand(null, 1);
GetPopularMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetPopularMixes(CreateMixFilter(Filter)))
.Subscribe(SetBrowsedMixes);
// command is enabled only if the user is logged in
GetLikedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetLikedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetLikedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
// command is enabled only if the user is logged in
GetFeedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetFeedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetFeedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
GetRecommendedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetRecommendedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetRecommendedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
GetHistoryMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetHistoryMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetHistoryMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
BrowsedMixes = new DispatchedReactiveCollection <MixViewModel>();
ReplaySubject <bool> browsedMixesExistObservable = new ReplaySubject <bool>(1);
BrowsedMixes.CollectionCountChanged.Select(count => count > 0).Subscribe(browsedMixesExistObservable.OnNext);
browsedMixesExistObservable.OnNext(false);
GetMoreMixes = new ReactiveAsyncCommand(browsedMixesExistObservable, 1);
GetMoreMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetMoreMixes())
.Subscribe(AddBrowsedMixes);
// set can execute only if there is something in the list
SetMixDisplayMode = new ReactiveCommand(browsedMixesExistObservable);
SetMixDisplayMode.Subscribe(mode => MixDisplayMode = (MixDisplayMode)mode);
ApplyFilter = new ReactiveCommand();
ApplyFilter.Where(_ => Filter.Length > 0)
.Subscribe(_ =>
{
// if we only started up the application, by search for Hot mixes
if (mediaLibraryBrowser.SessionData.IsEmpty)
{
GetHotMixes.Execute(null);
return;
}
// otherwise, take the same type of mixes as they were before
switch (mediaLibraryBrowser.SessionData.LastMixesRequest.ViewType)
{
case MixesViewType.Hot: GetHotMixes.Execute(null); break;
case MixesViewType.Popular: GetPopularMixes.Execute(null); break;
case MixesViewType.Recent: GetRecentlyMadeMixes.Execute(null); break;
case MixesViewType.Liked: GetLikedMixes.Execute(null); break;
case MixesViewType.Feed: GetFeedMixes.Execute(null); break;
case MixesViewType.Listened: GetHistoryMixes.Execute(null); break;
case MixesViewType.Recommended: GetRecommendedMixes.Execute(null); break;
default:
// throw new ArgumentOutOfRangeException();
break;
}
});
MixDisplayMode mixDisplayMode;
string storedMixDisplayModeString = (string)settings[mixdisplayModeKey];
Enum.TryParse <MixDisplayMode>(storedMixDisplayModeString, out mixDisplayMode);
MixDisplayMode = mixDisplayMode;
MixesViewTypeAsString = String.Empty;
Filter = String.Empty;
MixBrowsingMessage = String.Empty;
}
public PlaybackViewModel(IPlaybackController playbackController, Settings settings,
IMixViewModelFactory mixViewModelFactory)
{
this.playbackController = playbackController;
this.settings = settings;
var volumeString = (string)settings[volumeKey] ?? "50";
Volume = Double.Parse(volumeString);
_CurrentPosition = playbackController.CurrentPositionObservable
.ToProperty(this, x => x.CurrentPosition);
_CurrentPositionAsString = playbackController.CurrentPositionObservable
.Select(TimeSpan.FromSeconds)
.Select(DurationToString)
.ToProperty(this, x => x.CurrentPositionAsString);
// connecting current mix being played to the viewmodel
IObservable <MixViewModel> currentMixViewModelObservable = playbackController.CurrentMixObservable.Select(mixViewModelFactory.CreateMixViewModel);
_CurrentMixViewModel = currentMixViewModelObservable
.ToProperty(this, x => x.CurrentMixViewModel);
IObservable <bool> _CurrentMixViewModelPresent =
this.WhenAny(
x => x.CurrentMixViewModel,
mixViewModel => mixViewModel.Value != null &&
mixViewModel.Value.Model != Mix.NoMixAvailable);
_CurrentTrackDurationAsString = playbackController.CurrentDurationObservable
.Select(duration => DurationToString(TimeSpan.FromSeconds(duration)))
.ToProperty(this, x => x.CurrentTrackDurationAsString);
_CurrentTrackDuration = playbackController.CurrentDurationObservable
.ToProperty(this, x => x.CurrentTrackDuration);
// commands
// going to the next song only if there is a mix currently loaded
_NextSong = currentMixViewModelObservable
.Select(x => x.NextSong)
.ToProperty(this, x => x.NextSong);
var audioPlayerState = playbackController.PlayerStateObservable;
// both having a current mix and not running
var audioPlayerNotRunning = audioPlayerState.Select(status =>
status == MediaStatus.Stopped ||
status == MediaStatus.Paused).CombineLatest(
_CurrentMixViewModelPresent, (x, y) => x && y);
Continue = new ReactiveAsyncCommand(audioPlayerNotRunning, 1);
Continue.Subscribe(_ => playbackController.Continue());
var audioPlayerRunning = audioPlayerState.Select(status => status == MediaStatus.Running);
Pause = new ReactiveAsyncCommand(audioPlayerRunning, 1);
Pause.Subscribe(_ => playbackController.Pause());
var audioPlayerRunningOrPaused = audioPlayerState.Select(status =>
status == MediaStatus.Running ||
status == MediaStatus.Paused);
Stop = new ReactiveAsyncCommand(audioPlayerRunningOrPaused, 1);
Stop.Subscribe(_ => playbackController.Stop());
NextMix = new ReactiveAsyncCommand(_CurrentMixViewModelPresent, 1);
NextMix.RegisterAsyncAction(_ =>
{
try
{
playbackController.NextMix();
}
catch (Exception e)
{
log.Error("Unable to go to the next mix", e);
}
}
);
bool debugModeOn = ConfigurationManager.AppSettings["AudioPlayer"] != null && ConfigurationManager.AppSettings["AudioPlayer"].Equals("DirectX WMI 3.14169");
_IsPositionSliderEnabled = audioPlayerRunningOrPaused
.Select(a => a && debugModeOn)
.ToProperty(this, x => x.IsPositionSliderEnabled);
GoToTrack = new ReactiveAsyncCommand(_CurrentMixViewModelPresent, 1);
GoToTrack.Subscribe(_ =>
{
if (debugModeOn)
{
try
{
playbackController.GoToTrack(SelectedTrackIndex);
}
catch (Exception e)
{
log.Error("Unable to go to track " + SelectedTrackIndex, e);
}
}
});
Skip = new ReactiveAsyncCommand(audioPlayerRunningOrPaused, 1);
Skip.Subscribe(step =>
{
double newPosition = CurrentPosition + Double.Parse((string)step);
if (newPosition >= 0 && newPosition <= CurrentTrackDuration)
{
CurrentPosition = newPosition;
}
});
ChangeVolume = new ReactiveAsyncCommand(null, 1);
ChangeVolume.Subscribe(step =>
{
double newVolume = Volume + Double.Parse((string)step);
if (newVolume >= 0 && newVolume <= 100)
{
Volume = newVolume;
}
});
}
public MediaBrowserViewModel(LoginFormViewModel loginFormViewModel, IMixViewModelFactory mixViewModelFactory)
: this(new MediaLibraryBrowser(), new Settings(), loginFormViewModel, mixViewModelFactory)
{
}
