Task RunWindowTest(IWindow window, Func <NavigationRootManager, Task> action)
{
return(InvokeOnMainThreadAsync(async() =>
{
FrameworkElement frameworkElement = null;
var content = (Panel)DefaultWindow.Content;
try
{
var scopedContext = new MauiContext(MauiContext.Services);
scopedContext.AddWeakSpecific(DefaultWindow);
var mauiContext = scopedContext.MakeScoped(true);
var windowManager = mauiContext.GetNavigationRootManager();
windowManager.Connect(window.Content);
frameworkElement = windowManager.RootView;
TaskCompletionSource <object> taskCompletionSource = new TaskCompletionSource <object>();
frameworkElement.Loaded += (_, __) => taskCompletionSource.SetResult(true);
content.Children.Add(frameworkElement);
await taskCompletionSource.Task;
await action(windowManager);
}
finally
{
if (frameworkElement != null)
{
content.Children.Remove(frameworkElement);
}
}
return Task.CompletedTask;
}));
}
Task CreateNavigationViewHandlerAsync(IStackNavigationView navigationView, Func <NavigationViewHandler, Task> action)
{
return(InvokeOnMainThreadAsync(async() =>
{
FrameworkElement frameworkElement = null;
var content = (Panel)DefaultWindow.Content;
try
{
var mauiContext = MauiContext.MakeScoped(true);
var handler = CreateHandler(navigationView, mauiContext);
frameworkElement = handler.PlatformView;
content.Children.Add(frameworkElement);
if (navigationView is NavigationViewStub nvs && nvs.NavigationStack?.Count > 0)
{
navigationView.RequestNavigation(new NavigationRequest(nvs.NavigationStack, false));
await nvs.OnNavigationFinished;
}
await action(handler);
}
finally
{
if (frameworkElement != null)
{
content.Children.Remove(frameworkElement);
}
}
}));
}
Task RunWindowTest <THandler>(IWindow window, Func <THandler, Task> action)
where THandler : class, IElementHandler
{
return(InvokeOnMainThreadAsync(async() =>
{
var testingRootPanel = (WPanel)MauiProgram.CurrentWindow.Content;
IElementHandler newWindowHandler = null;
NavigationRootManager navigationRootManager = null;
try
{
var scopedContext = new MauiContext(MauiContext.Services);
scopedContext.AddWeakSpecific(MauiProgram.CurrentWindow);
var mauiContext = scopedContext.MakeScoped(true);
navigationRootManager = mauiContext.GetNavigationRootManager();
navigationRootManager.UseCustomAppTitleBar = false;
newWindowHandler = window.ToHandler(mauiContext);
var content = window.Content.Handler.ToPlatform();
await content.OnLoadedAsync();
await Task.Delay(10);
if (typeof(THandler).IsAssignableFrom(newWindowHandler.GetType()))
{
await action((THandler)newWindowHandler);
}
else if (typeof(THandler).IsAssignableFrom(window.Content.Handler.GetType()))
{
await action((THandler)window.Content.Handler);
}
}
finally
{
if (navigationRootManager != null)
{
navigationRootManager.Disconnect();
}
if (newWindowHandler != null)
{
newWindowHandler.DisconnectHandler();
}
// Set the root window panel back to the testing panel
if (testingRootPanel != null && MauiProgram.CurrentWindow.Content != testingRootPanel)
{
MauiProgram.CurrentWindow.Content = testingRootPanel;
await testingRootPanel.OnLoadedAsync();
await Task.Delay(10);
}
}
}));
}
Task RunWindowTest <THandler>(IWindow window, Func <THandler, Task> action)
where THandler : class, IElementHandler
{
return(InvokeOnMainThreadAsync(async() =>
{
var testingRootPanel = (WPanel)MauiProgram.CurrentWindow.Content;
IElementHandler newWindowHandler = null;
NavigationRootManager navigationRootManager = null;
try
{
var scopedContext = new MauiContext(MauiContext.Services);
scopedContext.AddWeakSpecific(MauiProgram.CurrentWindow);
var mauiContext = scopedContext.MakeScoped(true);
navigationRootManager = mauiContext.GetNavigationRootManager();
MauiContext
.Services
.GetRequiredService <WWindow>()
.SetWindowHandler(window, mauiContext);
newWindowHandler = window.Handler;
var content = window.Content.Handler.ToPlatform();
await content.OnLoadedAsync();
await Task.Delay(10);
if (typeof(THandler).IsAssignableFrom(newWindowHandler.GetType()))
{
await action((THandler)newWindowHandler);
}
else if (typeof(THandler).IsAssignableFrom(window.Content.Handler.GetType()))
{
await action((THandler)window.Content.Handler);
}
else if (window.Content is ContentPage cp && typeof(THandler).IsAssignableFrom(cp.Content.Handler.GetType()))
{
await action((THandler)cp.Content.Handler);
}
else
{
throw new Exception($"I can't work with {typeof(THandler)}");
}
}
finally
{
if (navigationRootManager != null)
{
navigationRootManager.Disconnect();
}
if (newWindowHandler != null)
{
newWindowHandler.DisconnectHandler();
}
// Set the root window panel back to the testing panel
if (testingRootPanel != null && MauiProgram.CurrentWindow.Content != testingRootPanel)
{
MauiProgram.CurrentWindow.Content = testingRootPanel;
await testingRootPanel.OnLoadedAsync();
await Task.Delay(10);
}
// reset the appbar title to our test runner
MauiProgram
.CurrentWindow
.GetWindow()
.Handler
.MauiContext
.GetNavigationRootManager()
.UpdateAppTitleBar(true);
}
}));
void SetCurrent(Page newPage, Page previousPage, bool popping, Action?completedCallback = null)
{
try
{
if (popping)
{
RemovePage(previousPage);
}
else if (newPage.BackgroundColor.IsDefault() && newPage.Background.IsEmpty)
{
RemovePage(previousPage);
}
if (popping)
{
previousPage.Handler = null;
// Un-parent the page; otherwise the Resources Changed Listeners won't be unhooked and the
// page will leak
previousPage.Parent = null;
}
if (Container == null || newPage == null)
{
return;
}
if (!popping)
{
var modalContext =
MauiContext
.MakeScoped(registerNewNavigationRoot: true);
newPage.Toolbar ??= new Toolbar(newPage);
_ = newPage.Toolbar.ToNative(modalContext);
var windowManager = modalContext.GetNavigationRootManager();
windowManager.Connect(newPage);
Container.Children.Add(windowManager.RootView);
}
else
{
var windowManager = newPage.FindMauiContext()?.GetNavigationRootManager() ??
throw new InvalidOperationException("Previous Page Has Lost its MauiContext");
if (!Container.Children.Contains(windowManager.RootView))
{
Container.Children.Add(windowManager.RootView);
}
}
completedCallback?.Invoke();
}
catch (Exception error)
{
//This exception prevents the Main Page from being changed in a child
//window or a different thread, except on the Main thread.
//HEX 0x8001010E
if (error.HResult == -2147417842)
{
throw new InvalidOperationException("Changing the current page is only allowed if it's being called from the same UI thread." +
"Please ensure that the new page is in the same UI thread as the current page.");
}
throw;
}
}