private void ColorPalettePage_KeyDown(object sender, KeyRoutedEventArgs e)
{
var gridView = sender as GridView;
if (e.OriginalKey == Windows.System.VirtualKey.Right && gridView.SelectedIndex ==
gridView.ItemsPanelRoot.Children.Count - 1)
{
ColorPaletteChangeWithKeyboard = PaletteSwitchingDirectionWithKeyboard.Next;
}
else if (e.OriginalKey == Windows.System.VirtualKey.Left && gridView.SelectedIndex == 0)
{
ColorPaletteChangeWithKeyboard = PaletteSwitchingDirectionWithKeyboard.Prev;
}
}
// If FlipView selection has been changed with keyboard, set focus on appropriate colorItem.
private void ColorPaletteFlipView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
// Because sometimes, Focus shifts to FlipViewItem when arrow key is spammed.
var x = FocusManager.GetFocusedElement();
if (x is FlipViewItem)
{
ColorPaletteChangeWithKeyboard = (PalettePageIndex + 1 == ColorPaletteFlipView.SelectedIndex) ?
PaletteSwitchingDirectionWithKeyboard.Next : PaletteSwitchingDirectionWithKeyboard.Prev;
}
PalettePageIndex = ColorPaletteFlipView.SelectedIndex;
var flipView = sender as FlipView;
if (ColorPaletteChangeWithKeyboard == PaletteSwitchingDirectionWithKeyboard.None)
{
return;
}
var flipViewItems = flipView.ItemsPanelRoot.Children;
GridView currentGridView = null;
foreach (FlipViewItem flipViewItem in flipViewItems)
{
if ((flipViewItem.Content as ColorPalettePageViewModel) == flipView.SelectedItem)
{
currentGridView = flipViewItem.ContentTemplateRoot as GridView;
int index = (ColorPaletteChangeWithKeyboard == PaletteSwitchingDirectionWithKeyboard.Next) ?
0 : currentGridView.ItemsPanelRoot.Children.Count - 1;
var item = currentGridView.ItemsPanelRoot.Children[index] as GridViewItem;
item.Focus(FocusState.Keyboard);
}
}
ColorPaletteChangeWithKeyboard = PaletteSwitchingDirectionWithKeyboard.None;
}
