public ExerciseViewModel(ISchedulerService schedulerService, Exercise model, IObservable<ExecutionContext> executionContext)
{
schedulerService.AssertNotNull(nameof(schedulerService));
model.AssertNotNull(nameof(model));
executionContext.AssertNotNull(nameof(executionContext));
this.disposables = new CompositeDisposable();
this.model = model;
executionContext
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.ExecutionContext = x)
.AddTo(this.disposables);
Observable
.CombineLatest(
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(ec => ec == null ? Observable.Never<TimeSpan>() : ec.WhenAnyValue(x => x.SkipAhead))
.Switch(),
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(ec => ec == null ? Observable.Never<Exercise>() : ec.WhenAnyValue(x => x.CurrentExercise))
.Switch(),
(skip, current) => skip == TimeSpan.Zero && current == this.model)
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.IsActive = x)
.AddTo(this.disposables);
this
.WhenAnyValue(x => x.ExecutionContext)
.Select(
ec =>
ec == null
? Observable.Return(TimeSpan.Zero)
: ec
.WhenAnyValue(x => x.CurrentExerciseProgress)
.Where(_ => ec.CurrentExercise == this.model)
.StartWith(TimeSpan.Zero))
.Switch()
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.ProgressTimeSpan = x)
.AddTo(this.disposables);
this
.WhenAny(
x => x.Duration,
x => x.ProgressTimeSpan,
(duration, progressTimeSpan) => progressTimeSpan.Value.TotalMilliseconds / duration.Value.TotalMilliseconds)
.Select(progressRatio => double.IsNaN(progressRatio) || double.IsInfinity(progressRatio) ? 0d : progressRatio)
.Select(progressRatio => Math.Min(1d, progressRatio))
.Select(progressRatio => Math.Max(0d, progressRatio))
.ObserveOn(schedulerService.MainScheduler)
.Subscribe(x => this.Progress = x)
.AddTo(this.disposables);
}
public ExerciseViewModelBuilder WithModel(Exercise model)
{
this.model = model;
return this;
}
public ExerciseViewModelBuilder()
{
this.schedulerService = new SchedulerServiceMock(MockBehavior.Loose);
this.model = new ExerciseBuilder();
this.executionContext = Observable.Never<ExecutionContext>();
}
internal void SetCurrentExercise(Exercise exercise) =>
this.CurrentExercise = exercise;
public ExerciseViewModelBuilder WithModel(Exercise model) =>
this.With(ref this.model, model);
public ExerciseProgramBuilder AddExercise(Exercise exercise)
{
this.exercises.Add(exercise);
return this;
}
internal void SetCurrentExercise(Exercise exercise) => this.CurrentExercise = exercise;
public ExerciseProgramBuilder WithExercise(Exercise exercise) =>
this.With(ref this.exercises, exercise);