public async void ShowFlyoutView <TView>(
ViewRequest viewRequest = null,
UiShowFlyoutOptions options = null)
where TView : class, IView
{
await ShowFlyoutView <TView, Unit>();
}
public Task <TResult> ShowFlyoutView <TView, TResult>(
ViewRequest viewRequest = null,
UiShowFlyoutOptions options = null)
where TView : class, IView
{
return(ShowFlyoutView <TResult>(
container => container.Resolve <TView>(),
viewRequest,
options));
}
public async void ShowFlyoutView(Func <ILifetimeScope, IView> viewFactory, ViewRequest viewRequest = null,
UiShowFlyoutOptions options = null)
{
await ShowFlyoutView <Unit>(viewFactory, viewRequest, options);
}
public async Task <TResult> ShowFlyoutView <TResult>(Func <ILifetimeScope, IView> viewFactory,
ViewRequest viewRequest = null, UiShowFlyoutOptions options = null)
{
if (!string.IsNullOrEmpty(viewRequest?.ViewId))
{
var viewOld = FlyoutsControl.Items
.Cast <Flyout>()
.Select(x => (IView)x.Content)
.FirstOrDefault(x => (x.ViewModel as ViewModelBase)?.ViewId == viewRequest.ViewId);
if (viewOld != null)
{
(viewOld.ViewModel as Ui.Wpf.Common.ViewModels.IActivatableViewModel)?.Activate(viewRequest);
return(default(TResult));
}
}
var view = viewFactory(Container);
if (options != null)
{
view.Configure(options);
}
options = options ?? new UiShowFlyoutOptions();
var flyout = new Flyout
{
IsModal = options.IsModal,
Position = options.Position,
Theme = options.Theme,
ExternalCloseButton = options.ExternalCloseButton,
IsPinned = options.IsPinned,
CloseButtonIsCancel = options.CloseByEscape,
CloseCommand = options.CloseCommand,
CloseCommandParameter = options.CloseCommandParameter,
AnimateOpacity = options.AnimateOpacity,
AreAnimationsEnabled = options.AreAnimationsEnabled,
IsAutoCloseEnabled = options.IsAutoCloseEnabled,
AutoCloseInterval = options.AutoCloseInterval,
Width = options.Width ?? double.NaN,
Height = options.Height ?? double.NaN,
Content = view,
IsOpen = true
};
var vm = view.ViewModel as ViewModelBase;
if (vm != null)
{
Observable
.FromEventPattern <ViewModelCloseQueryArgs>(
x => vm.CloseQuery += x,
x => vm.CloseQuery -= x)
.Subscribe(x => flyout.IsOpen = false)
.DisposeWith(vm.Disposables);
}
var disposables = new CompositeDisposable();
view.ViewModel
.WhenAnyValue(x => x.Title)
.Subscribe(x =>
{
flyout.Header = x;
flyout.TitleVisibility =
!string.IsNullOrEmpty(x)
? Visibility.Visible
: Visibility.Collapsed;
})
.DisposeWith(disposables);
view.ViewModel
.WhenAnyValue(x => x.CanClose)
.Subscribe(x => flyout.CloseButtonVisibility = x ? Visibility.Visible : Visibility.Collapsed)
.DisposeWith(disposables);
var closedObservable = Observable
.FromEventPattern <RoutedEventHandler, RoutedEventArgs>(
x => flyout.ClosingFinished += x,
x => flyout.ClosingFinished -= x);
FlyoutsControl.Items.Add(flyout);
InitializeView(view, viewRequest);
(view.ViewModel as Ui.Wpf.Common.ViewModels.IActivatableViewModel)?.Activate(viewRequest);
await closedObservable.FirstAsync();
disposables.Dispose();
vm?.Closed(new ViewModelCloseQueryArgs());
flyout.Content = null;
FlyoutsControl.Items.Remove(flyout);
if (vm is IResultableViewModel <TResult> model)
{
return(model.ViewResult);
}
return(default(TResult));
}