public BoilTimerViewModel(IScreen hostScreen)
{
HostScreen = hostScreen;
StartTimer = ReactiveCommand.Create();
StartTimer.Subscribe();
PauseTimer = ReactiveCommand.Create();
PauseTimer.Subscribe();
ResetTimer = ReactiveCommand.Create();
ResetTimer.Subscribe();
}
public MashTimerViewModel(IScreen hostScreen, BrewData data)
{
HostScreen = hostScreen ?? Locator.Current.GetService <IScreen> ();
CurrentTimeRemaining = (int)data.MashTime.TotalSeconds;
var canStartOrReset = this.WhenAnyValue(x => x.IsTimerRunning).Where(x => !x);
StartTimer = ReactiveCommand.Create(canStartOrReset);
var start = StartTimer.Select(x => true);
PauseTimer = ReactiveCommand.Create(this.WhenAnyValue(x => x.IsTimerRunning).Where(x => x));
var pause = PauseTimer.Select(x => false);
Observable.Merge(start, pause)
.StartWith(false)
.ToProperty(this, vm => vm.IsTimerRunning, out _IsTimerRunning);
ResetTimer = ReactiveCommand.Create(canStartOrReset);
ResetTimer.Subscribe(_ => {
CurrentTimeRemaining = (int)data.MashTime.TotalSeconds;
});
this.WhenAnyValue(x => x.IsTimerRunning)
.Where(x => x == true)
.Subscribe(_ => Device.StartTimer(TimeSpan.FromSeconds(1), () => {
if (CurrentTimeRemaining > 0)
{
CurrentTimeRemaining -= 1;
}
return(IsTimerRunning);
}));
this.WhenAnyValue(x => x.CurrentTimeRemaining)
.Select(x => TimeSpan.FromSeconds(x).ToString())
.ToProperty(this, vm => vm.ClockText, out _ClockText);
}
/// <summary>
/// Raise the pause timer event.
/// </summary>
private static void RaisePauseTimer()
{
PauseTimer?.Invoke(null, EventArgs.Empty);
}
