public void HandleNavigated(ShellNavigatedEventArgs args)
{
if (AccumulateNavigatedEvents)
{
if (_accumulatedEvent == null)
{
_accumulatedEvent = args;
}
}
else
{
_accumulatedEvent = null;
BaseShellItem baseShellItem = _shell.CurrentItem?.CurrentItem?.CurrentItem;
if (baseShellItem != null)
{
baseShellItem.OnAppearing(() =>
{
FireNavigatedEvents(args, _shell);
});
}
else
{
FireNavigatedEvents(args, _shell);
}
void FireNavigatedEvents(ShellNavigatedEventArgs a, Shell shell)
{
Navigated?.Invoke(this, args);
// reset active page route tree
Routing.ClearImplicitPageRoutes();
Routing.RegisterImplicitPageRoutes(_shell);
}
}
}
void OnShellNavigated(object sender, ShellNavigatedEventArgs e)
{
if (((Shell)sender).GetCurrentShellPage() is Page page)
{
UnregisterChildPage(page);
RegisterChildPage(page);
}
EmitCollectionChanged();
}
public void HandleNavigated(ShellNavigatedEventArgs args)
{
_waitingForWindow?.Dispose();
_waitingForWindow = null;
// we don't want to fire Navigated until shell is attached to an actual window
if (_shell.Window == null || _shell.CurrentPage == null)
{
_shell.PropertyChanged += WaitForWindowToSet;
var shellContent = _shell?.CurrentItem?.CurrentItem?.CurrentItem;
if (shellContent != null)
{
shellContent.ChildAdded += WaitForWindowToSet;
}
_waitingForWindow = new ActionDisposable(() =>
{
_shell.PropertyChanged -= WaitForWindowToSet;
if (shellContent != null)
{
shellContent.ChildAdded -= WaitForWindowToSet;
}
});
void WaitForWindowToSet(object sender, EventArgs e)
{
if (_shell.Window != null &&
_shell.CurrentPage != null)
{
_waitingForWindow?.Dispose();
_waitingForWindow = null;
_shell.CurrentItem?.SendAppearing();
HandleNavigated(args);
}
}
return;
}
if (AccumulateNavigatedEvents)
{
if (_accumulatedEvent == null)
{
_accumulatedEvent = args;
}
}
else
{
_accumulatedEvent = null;
BaseShellItem baseShellItem = _shell.CurrentItem?.CurrentItem?.CurrentItem;
if (baseShellItem != null)
{
baseShellItem.OnAppearing(() =>
{
FireNavigatedEvents(args, _shell);
});
}
else
{
FireNavigatedEvents(args, _shell);
}
void FireNavigatedEvents(ShellNavigatedEventArgs a, Shell shell)
{
Navigated?.Invoke(this, args);
// reset active page route tree
Routing.ClearImplicitPageRoutes();
Routing.RegisterImplicitPageRoutes(_shell);
}
}
}
