public SettingsViewModel ( INavigationService navigationService, TimeAccountingContext timeAccountingContext, Func <WorkDaysViewModel> workDaysFactory ) { _workDaysFactory = workDaysFactory; _timeAccountingContext = timeAccountingContext; _navigationService = navigationService; ClearCommand = ReactiveCommand.CreateFromTask(ClearExecuteAsync); WorkDaysCommand = ReactiveCommand.CreateFromTask(WorkDaysExecuteAsync); DevelopCommand = ReactiveCommand.CreateFromTask(DevelopExecuteAsync); LightCommand = ReactiveCommand.Create(() => { if (!Settings.IsDark) { return; } Settings.IsDark = false; ThemeService.ChangeToLight(); }); DarkCommand = ReactiveCommand.Create(() => { if (Settings.IsDark) { return; } Settings.IsDark = true; ThemeService.ChangeToDark(); }); WorkDaysCommand = ReactiveCommand.CreateFromTask(WorkDaysExecuteAsync); InstagramCommand = ReactiveCommand.CreateFromTask(async() => { InstagramBackgroundColor = Color.FromHex("#D4F4FF"); await Task.Delay(150); await Browser.OpenAsync(new Uri(BaseValue.CreatorInstagram)); InstagramBackgroundColor = Color.Transparent; }); VkCommand = ReactiveCommand.CreateFromTask(async() => { VkBackgroundColor = Color.FromHex("#D4F4FF"); await Task.Delay(150); await Browser.OpenAsync(new Uri(BaseValue.CreatorVk)); VkBackgroundColor = Color.Transparent; }); GitCommand = ReactiveCommand.CreateFromTask(async() => { GitBackgroundColor = Color.FromHex("#D4F4FF"); await Task.Delay(150); await Browser.OpenAsync(new Uri(BaseValue.CreatorGithub)); GitBackgroundColor = Color.Transparent; }); SupportCommand = ReactiveCommand.Create(() => { var emailMessenger = CrossMessaging.Current.EmailMessenger; if (emailMessenger.CanSendEmail) { emailMessenger.SendEmail( BaseValue.SupportEmail, TranslationCodeExtension.GetTranslation("MessageToSupport"), string.Empty); } }); }