private void RevertSelection(NavMenuListView view, NavigatingCancelEventArgs e)
{
var item = (from p in wholeList where p.DestPage == e.SourcePageType select p).SingleOrDefault();
if (item == null && this.AppFrame.BackStackDepth > 0)
{
// In cases where a page drills into sub-pages then we'll highlight the most recent
// navigation menu item that appears in the BackStack
foreach (var entry in this.AppFrame.BackStack.Reverse())
{
item = (from p in wholeList where p.DestPage == entry.SourcePageType select p).SingleOrDefault();
if (item != null)
{
break;
}
}
}
var container = (ListViewItem)view.ContainerFromItem(item);
// While updating the selection state of the item prevent it from taking keyboard focus. If a
// user is invoking the back button via the keyboard causing the selected nav menu item to change
// then focus will remain on the back button.
if (container != null)
{
container.IsTabStop = false;
}
view.SetSelectedItem(container);
if (container != null)
{
container.IsTabStop = true;
}
}
private void UpdateSelection(NavMenuListView view, Page page)
{
var item = (from p in wholeList where p.DestPage == page.GetType() select p).SingleOrDefault();
var container = (ListViewItem)view.ContainerFromItem(item);
if (container == null)
{
DebugUtil.Log(() => "Nothing selected");
}
if (container != null)
{
container.IsTabStop = false;
}
view.SetSelectedItem(container);
if (container != null)
{
container.IsTabStop = true;
}
}
