protected override void OnKeyDown(KeyRoutedEventArgs e)
{
if (IsPassword)
{
// The ctrlDown flag is used to track if the Ctrl key is pressed; if it's actively being used and the most recent
// key to trigger OnKeyDown, then treat it as handled.
var ctrlDown = InputKeyboardSource.GetKeyStateForCurrentThread(VirtualKey.Control).HasFlag(CoreVirtualKeyStates.Down);
// The shift, tab, and directional (Home/End/PgUp/PgDown included) keys can be used to select text and should otherwise
// be ignored.
if (
e.Key == VirtualKey.Shift ||
e.Key == VirtualKey.Tab ||
e.Key == VirtualKey.Left ||
e.Key == VirtualKey.Right ||
e.Key == VirtualKey.Up ||
e.Key == VirtualKey.Down ||
e.Key == VirtualKey.Home ||
e.Key == VirtualKey.End ||
e.Key == VirtualKey.PageUp ||
e.Key == VirtualKey.PageDown)
{
base.OnKeyDown(e);
return;
}
// For anything else, continue on (calling base.OnKeyDown) and then if Ctrl is still being pressed, do nothing about it.
// The tricky part here is that the SelectionLength value needs to be cached because in an example where the user entered
// '123' into the field and selects all of it, the moment that any character key is pressed to replace the entire string,
// the SelectionLength is equal to zero, which is not what's desired. Entering a key will thus remove the selected number
// of characters from the Text value. OnKeyDown is fortunately called before OnSelectionChanged which enables this.
else
{
// If the C or X keys (copy/cut) are pressed while Ctrl is active, ignore handing them at all. Undo and Redo (Z/Y) should
// be ignored as well as this emulates the regular behavior of a PasswordBox.
if ((e.Key == VirtualKey.C || e.Key == VirtualKey.X || e.Key == VirtualKey.Z || e.Key == VirtualKey.Y) && ctrlDown)
{
e.Handled = false;
return;
}
base.OnKeyDown(e);
if (_cachedSelectionLength > 0 && !ctrlDown)
{
Text = Text.Remove(SelectionStart, _cachedSelectionLength);
}
}
}
else
{
base.OnKeyDown(e);
}
}
private void Thumbnail_OnTapped(object sender, TappedRoutedEventArgs e)
{
if (InputKeyboardSource.GetKeyStateForCurrentThread(VirtualKey.Shift).HasFlag(CoreVirtualKeyStates.Down))
{
// User is doing the range selection
return;
}
e.Handled = true;
WeakReferenceMessenger.Default.Send(new MainPageFrameSetConnectedAnimationTargetMessage(sender as UIElement));
var viewModels = sender.GetDataContext <IllustrationViewModel>()
.GetMangaIllustrationViewModels()
.ToArray();
ConnectedAnimationService.GetForCurrentView().PrepareToAnimate("ForwardConnectedAnimation", (UIElement)sender);
App.AppViewModel.RootFrameNavigate(typeof(IllustrationViewerPage), new IllustrationViewerPageViewModel(this, viewModels), new SuppressNavigationTransitionInfo());
}
