public ConfigureAppViewModel(NewProjectViewModel screen = null) : base("newprj_app", screen)
{
Title = "New Project";
Description = "Follow these steps to generate the Xamarin solution: specify your app name, organization and supported platforms.\nFurther settings in the \"Next\" section.";
IsDescriptionVisible = true;
BackVisible = false;
this.WhenAnyValue(t => t.AppName, t => t.OrganizationId, t => t.TargetAndroid, t => t.TargetIos,
(app, org, target1, target2) => !string.IsNullOrWhiteSpace(app) && !string.IsNullOrWhiteSpace(org) && (target1 || target2))
.BindTo(this, t => t.NextEnabled);
this.WhenAnyValue(t => t.AppName, t => t.OrganizationId, BuildAndroidAppId)
.ToProperty(this, t => t.AndroidAppId, out _androidAppId, initialValue: BuildAndroidAppId(AppName, OrganizationId));
this.WhenAnyValue(t => t.AppName, t => t.OrganizationId, BuildIosAppId)
.ToProperty(this, t => t.IosAppId, out _iosAppId, initialValue: BuildIosAppId(AppName, OrganizationId));
// Command to check if app can target Android / iOS
ReactiveCommand <Unit, Unit> checkPlatformRequirementsCommand = ReactiveCommand.CreateFromTask(() => Task.Run(() =>
{
// Check iOS support
if (OperatingSystem.IsWindows())
{
CanTargetIos = false;
SetPlatformMessage(Platform.iOS, PlatformMessageType.Normal, "Flutter iOS projects are supported on macOS only.");
}
// Check Android SDK installation
bool canTargetAndroid = AndroidSdkLocator.TryLocate(out _);
CanTargetAndroid = canTargetAndroid;
if (!canTargetAndroid)
{
SetPlatformMessage(Platform.Android, PlatformMessageType.Normal, "Android SDK not detected.");
}
TargetIos = CanTargetIos;
TargetAndroid = CanTargetAndroid;
}));
checkPlatformRequirementsCommand.Execute();
}
public CreateProjectProgressViewModel(FlutnetAppSettings appSettings, FlutnetProjectSettings projectSettings, NewProjectViewModel screen = null) : base("newprj_progress", screen)
{
_appSettings = appSettings;
_projectSettings = projectSettings;
Title = "New Project";
Description = "The project will take some time to generate.\nWait until the procedure finish.\n";
IsDescriptionVisible = false;
NextText = "Finish";
BackVisible = false;
IsFinishPage = true;
OutputLines = new ObservableCollection <string>();
// Observe any changes in the observable collection.
// Note that the property has no public setters, so we
// assume the collection is mutated by using the Add(),
// Delete(), Clear() and other similar methods.
OutputLines
// Convert the collection to a stream of chunks,
// so we have IObservable<IChangeSet<TKey, TValue>>
// type also known as the DynamicData monad.
.ToObservableChangeSet()
// Each time the collection changes, we get
// all updated items at once.
.ToCollection()
// Aggregate all the elements in the collection
// into a multi-line string.
.Select(lines => string.Join(Environment.NewLine, lines))
// Then, we convert the multi-line string to the
// property a multi-line TextBox can bind.
.ToProperty(this, x => x.Output, out _output, scheduler: RxApp.MainThreadScheduler);
// Create the command that calls Flutnet CLI
CreateProject = ReactiveCommand.CreateFromTask(async ct =>
{
NewProjectInArg arguments = BuildCommandLineArg();
CommandLineCallResult callResult = await CommandLineTools.Call <NewProjectOutArg>(arguments, ct, line =>
{
OutputLines.Add(line);
});
// This is not the proper way to change property values and raise property change notifications:
// we should return a public object and subscribe to the command observable
// so that we can use ReactiveUI framework methods such as ToProperty, BindTo etc.
if (callResult.Canceled)
{
IsCanceled = true;
}
else if (callResult.Failed)
{
IsFailed = true;
}
else
{
OutArg result = callResult.CommandResult;
if (!result.Success)
{
IsFailed = true;
}
else
{
IsCompletedSuccessfully = true;
}
}
});
CreateProject.IsExecuting.ToProperty(this, x => x.IsInProgress, out _isInProgress);
CreateProject.IsExecuting.BindTo(this, x => x.IsBusy);
BrowseProject = ReactiveCommand.Create(
execute: () => Launcher.OpenFolder(Path.Combine(projectSettings.Location, projectSettings.SolutionName)),
canExecute: this.WhenAnyValue(t => t.IsCompletedSuccessfully));
// Execute the command when the View is activated
Activator = new ViewModelActivator();
this.WhenActivated(disposables =>
{
CreateProject.Execute(Unit.Default).Subscribe().DisposeWith(disposables);
});
this.WhenAnyValue(t => t.IsInProgress, t => !t).BindTo(this, t => t.NextEnabled);
}
public MainPageViewModel(IScreen hostScreen) : base("main", hostScreen)
{
// Initialize all the page view models
NewProjectViewModel newProjectPage = new NewProjectViewModel(this);
AboutViewModel aboutPage = new AboutViewModel(this);
// Initialize the commands for navigating to these pages
OpenNewProjectPage = ReactiveCommand.CreateFromObservable(() => Router.Navigate.Execute(newProjectPage));
OpenAboutPage = ReactiveCommand.CreateFromObservable(() => Router.Navigate.Execute(aboutPage));
// Create the command for displaying the setup wizard at startup
ReactiveCommand <Unit, Unit> cmdOpenSetupWizard = ReactiveCommand.CreateFromObservable <Unit, Unit>(sender =>
{
return(ShowSetupWizard.Handle(Unit.Default));
});
// Check license status and optionally check for updates when the view is activated
this.WhenActivated(disposables =>
{
AppSettings.Default.Preferences.Reload();
if (AppSettings.Default.Preferences.CheckForUpdatesAtStartup)
{
aboutPage.CheckForUpdates.Execute().Subscribe().DisposeWith(disposables);
}
// Set the default (initial) page to the new project page
Router.Navigate.Execute(newProjectPage).Subscribe().DisposeWith(disposables);
});
newProjectPage.WhenActivated(disposables =>
{
if (_firstActivation && AppSettings.Default.Preferences.ShowSetupWizardAtStartup)
{
cmdOpenSetupWizard.Execute().Subscribe().DisposeWith(disposables);
_firstActivation = false;
}
});
//// Sample of a command executed periodically
//TimeSpan interval = TimeSpan.FromHours(1);
//Observable.Timer(interval, interval)
// .Select(time => Unit.Default)
// .InvokeCommand(aboutPage, p => p.CheckForUpdates);
aboutPage.WhenAnyValue(p => p.IsNewVersionAvailable).BindTo(this, t => t.IsUpdateAvailable);
Router.CurrentViewModel
.Where(vm => vm is IPageViewModel)
.Select(vm => (IPageViewModel)vm)
.Subscribe(page =>
{
page.WhenAnyValue(p => p.Title).BindTo(this, t => t.Title);
page.WhenAnyValue(p => p.IsBusy).BindTo(this, t => t.IsBusy);
});
Router.CurrentViewModel
.Select(vm => vm is NewProjectViewModel)
.ToProperty(this, t => t.IsNewProjectPageVisible, out _isNewProjectPageVisible);
Router.CurrentViewModel
.Select(vm => vm is AboutViewModel)
.ToProperty(this, t => t.IsAboutPageVisible, out _isAboutPageVisible);
}
