protected override void OnNavigatedTo(global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.Parameter == null)
{
throw new InvalidOperationException($"Cannot navigate to {nameof(FormsEmbeddedPageWrapper)} without "
+ $"providing a {nameof(System.Maui.Page)} identifier.");
}
// Find the page instance in the dictionary and then discard it so we don't prevent it from being collected
var key = (Guid)e.Parameter;
var page = Pages[key];
Pages.Remove(key);
// Convert that page into a FrameWorkElement we can display in the ContentPresenter
FrameworkElement frameworkElement = page.CreateFrameworkElement();
if (frameworkElement == null)
{
throw new InvalidOperationException($"Could not find or create a renderer for the Page {page}");
}
Root.Content = frameworkElement;
}
protected override void OnNavigatedTo(global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (this.OnNavigatedToCommand != null && e.Parameter != null)
{
this.OnNavigatedToCommand.Execute(e.Parameter);
}
}
/// <summary>
/// Restores the content transitions after the app has launched.
/// </summary>
/// <param name="sender">The object where the handler is attached.</param>
/// <param name="e">Details about the navigation event.</param>
void RootFrame_FirstNavigated(object sender, global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
var rootFrame = sender as global::Windows.UI.Xaml.Controls.Frame;
rootFrame.ContentTransitions = _transitions ?? new TransitionCollection()
{
new NavigationThemeTransition()
};
rootFrame.Navigated -= RootFrame_FirstNavigated;
}
void FacadeNavigatedEventHandler(object sender, global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
CurrentPageType = e.SourcePageType;
CurrentPageParam = e.Parameter;
var args = new NavigatedEventArgs(e, Content as Page);
if (NavigationModeHint != NavigationMode.New)
{
args.NavigationMode = NavigationModeHint;
}
NavigationModeHint = NavigationMode.New;
foreach (var handler in _navigatedEventHandlers)
{
handler(this, args);
}
}
protected virtual void OnNavigatedTo(global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
global::Windows.Foundation.Metadata.ApiInformation.TryRaiseNotImplemented("Windows.UI.Xaml.Controls.Page", "void Page.OnNavigatedTo(NavigationEventArgs e)");
}
private async void _frame_Navigated(object sender, global::Windows.UI.Xaml.Navigation.NavigationEventArgs e)
{
if (NavigationMode.New == e.NavigationMode)
{
try
{
if (null != CurrentPage)
{
if (CurrentPage.DataContext is INavigationAware navigationAware)
{
await navigationAware.OnNavigatedFromAsync();
}
}
}
catch (Exception ex)
{
Logger.Technical.From <NavigationService>().Exception(ex).Log();
}
try
{
if (e.Content is Page page && page.DataContext is INavigationAware navigationAware)
{
CurrentPage = page;
await navigationAware.OnNavigatedToAsync(e.Parameter as Dictionary <string, object>);
}
}
catch (Exception ex)
{
Logger.Technical.From <NavigationService>().Exception(ex).Log();
}
}
if (NavigationMode.Back == e.NavigationMode && null != CurrentPage) // shoul be always true!
{
try
{
if (CurrentPage.DataContext is INavigationAware navigationAware)
{
await navigationAware.OnNavigatedFromAsync();
}
}
catch (Exception ex)
{
Logger.Technical.From <NavigationService>().Exception(ex).Log();
}
try
{
if (e.Content is Page page && page.DataContext is INavigationAware navigationAware)
{
CurrentPage = page;
await navigationAware.OnNavigatedToAsync(new Dictionary <string, object>() { { "Back", true } });
}
}
catch (Exception ex)
{
Logger.Technical.From <NavigationService>().Exception(ex).Log();
}
}
NavigationChanged?.Invoke(sender, e);
}