void IComponentConnector.Connect(int connectionId, object target)
{
switch (connectionId)
{
case 1:
this.UserControlSelf = (Gallery)target;
break;
case 7:
this.CategoryListBox = (SelectingListBox)target;
break;
default:
this._contentLoaded = true;
break;
}
}
private void CategoryListBox_KeyDown(object sender, KeyEventArgs e)
{
SelectingListBox selectingListBox = sender as SelectingListBox;
if (e.Handled || selectingListBox == null || !selectingListBox.IsKeyboardFocusWithin)
{
return;
}
FocusNavigationDirection focusNavigationDirection;
switch (e.Key)
{
case Key.Left:
focusNavigationDirection = FocusNavigationDirection.Left;
break;
case Key.Up:
focusNavigationDirection = FocusNavigationDirection.Up;
break;
case Key.Right:
focusNavigationDirection = FocusNavigationDirection.Right;
break;
case Key.Down:
focusNavigationDirection = FocusNavigationDirection.Down;
break;
default:
return;
}
TraversalRequest request = new TraversalRequest(focusNavigationDirection);
if (Keyboard.FocusedElement is SelectingListBoxItem)
{
SelectingListBoxItem selectingListBoxItem = Keyboard.FocusedElement as SelectingListBoxItem;
KeyEventArgs keyEventArgs = new KeyEventArgs(e.KeyboardDevice, e.InputSource, e.Timestamp, e.Key);
keyEventArgs.RoutedEvent = Gallery.SelectedItemKeyDownEvent;
keyEventArgs.Source = (object)selectingListBoxItem;
this.RaiseEvent((RoutedEventArgs)keyEventArgs);
if (!keyEventArgs.Handled)
{
selectingListBoxItem.MoveFocus(request);
}
e.Handled = true;
}
else
{
Expander parentExpander = this.FindParentExpander(Keyboard.FocusedElement as DependencyObject);
if (parentExpander == null || !parentExpander.IsKeyboardFocusWithin)
{
return;
}
switch (focusNavigationDirection)
{
case FocusNavigationDirection.Left:
if (parentExpander.IsExpanded)
{
parentExpander.IsExpanded = false;
break;
}
break;
case FocusNavigationDirection.Right:
if (!parentExpander.IsExpanded)
{
parentExpander.IsExpanded = true;
break;
}
break;
default:
UIElement uiElement = Keyboard.FocusedElement as UIElement;
if (uiElement != null)
{
uiElement.MoveFocus(request);
break;
}
break;
}
e.Handled = true;
}
}
