/// <summary>
/// Initializes a new instance of the <see cref="MachineOffCheckViewModel"/> class.
/// </summary>
/// <param name="powerService">The power service to use.</param>
/// <param name="policyProvider">The policy provider to use.</param>
public MachineOffCheckViewModel(IPowerService powerService, ICommandPolicyProvider policyProvider)
{
if (powerService is null)
{
throw new System.ArgumentNullException(nameof(powerService));
}
if (policyProvider is null)
{
throw new System.ArgumentNullException(nameof(policyProvider));
}
this.WhenActivated(disposable =>
{
this.poweredOn = powerService.PoweredOn.ToProperty(this, x => x.PoweredOn).DisposeWith(disposable);
var policy = policyProvider.GetPolicy();
this.TurnOn = ReactiveCommand.CreateFromTask(
async(ct) =>
await policy.ExecuteAsync(
async(token) => await powerService.PowerOn(token),
ct),
powerService.PoweredOn.Select(x => !x)).DisposeWith(disposable);
this.canExecuteTurnOn = this.TurnOn.CanExecute.ToProperty(this, x => x.CanExecuteTurnOn).DisposeWith(disposable);
});
}
/// <summary>
/// Initializes a new instance of the <see cref="HeaderViewModel"/> class.
/// </summary>
/// <param name="powerService">The power service implementation.</param>
/// <param name="titleService">The title service.</param>
/// <param name="policyProvider">The policy provider to execute ordinary commands.</param>
/// <param name="navigationManager">The navigation manager to navigate to a different page.</param>
public HeaderViewModel(
IPowerService powerService,
ITitleService titleService,
ICommandPolicyProvider policyProvider,
NavigationManager navigationManager)
{
if (powerService is null)
{
throw new ArgumentNullException(nameof(powerService));
}
if (titleService is null)
{
throw new ArgumentNullException(nameof(titleService));
}
if (policyProvider is null)
{
throw new ArgumentNullException(nameof(policyProvider));
}
if (navigationManager is null)
{
throw new ArgumentNullException(nameof(navigationManager));
}
this.WhenActivated(disposable =>
{
this.poweredOn = powerService.PoweredOn.ToProperty(this, x => x.PoweredOn).DisposeWith(disposable);
this.title = titleService.Title.ToProperty(this, x => x.Title).DisposeWith(disposable);
var policy = policyProvider.GetPolicy();
this.TogglePower = ReactiveCommand.CreateFromTask(async(ct) =>
{
switch (this.PoweredOn)
{
case true:
await policy.ExecuteAsync(
async(token) => await powerService.PowerOff(token),
ct);
break;
case false:
await policy.ExecuteAsync(
async(token) => await powerService.PowerOn(token),
ct);
break;
}
}).DisposeWith(disposable);
this.Settings = ReactiveCommand.Create(() =>
{
navigationManager.NavigateTo("/Settings");
}).DisposeWith(disposable);
this.canExecuteTogglePower = this.TogglePower.CanExecute.ToProperty(this, x => x.CanExecuteTogglePower).DisposeWith(disposable);
});
}
/// <summary>
/// Initializes a new instance of the <see cref="BoilerViewModel"/> class.
/// </summary>
/// <param name="boilerService">The boiler Service to use.</param>
/// <param name="policyProvider">The policy provider.</param>
public BoilerViewModel(IBoilerService boilerService, ICommandPolicyProvider policyProvider)
{
if (boilerService is null)
{
throw new ArgumentNullException(nameof(boilerService));
}
if (policyProvider is null)
{
throw new ArgumentNullException(nameof(policyProvider));
}
this.WhenActivated(disposable =>
{
var policy = policyProvider.GetPolicy();
this.pressure = boilerService.Pressure.ToProperty(this, x => x.Pressure).DisposeWith(disposable);
this.temperature = boilerService.Temperature.ToProperty(this, x => x.Temperature).DisposeWith(disposable);
this.temperatureTrend = boilerService.Temperature
.WithPrevious((p, c) => c <p?Trend.Falling : c> p ? Trend.Rising : Trend.Stable)
.ToProperty(this, x => x.TemperatureTrend)
.DisposeWith(disposable);
this.protection = boilerService.Protection.ToProperty(this, x => x.Protection).DisposeWith(disposable);
this.heating = boilerService.Heating.ToProperty(this, x => x.Heating).DisposeWith(disposable);
this.targetPressure = boilerService.TargetPressure
.Merge(this.selectedTargetPressure)
.ToProperty(this, x => x.TargetPressure)
.DisposeWith(disposable);
var setTargetPressureCommand = ReactiveCommand.CreateFromTask <decimal, Unit>(
async(value, ct) =>
{
await policy.ExecuteAsync(
async token => await boilerService.SetTargetPressure(value, token), ct);
return(Unit.Default);
}).DisposeWith(disposable);
this.selectedTargetPressure
.Throttle(TimeSpan.FromMilliseconds(1000))
.InvokeCommand(setTargetPressureCommand)
.DisposeWith(disposable);
this.ResetProtection = ReactiveCommand.CreateFromTask(
async ct =>
{
await policy.ExecuteAsync(async token => await boilerService.ResetProtection(token), ct);
},
boilerService.Protection).DisposeWith(disposable);
});
}
