private void OnNavigatingToPage()

in TpmRcDecoder/TpmRcDecoder.Universal/AppShell.xaml.cs [216:242]

• 20 lines of code
• 8 McCabe index (conditional complexity)

        private void OnNavigatingToPage(object sender, NavigatingCancelEventArgs e)
        {
            if (e.NavigationMode == NavigationMode.Back)
            {
                var item = (from p in this.navlist 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 this.navlist where p.DestPage == entry.SourcePageType select p).SingleOrDefault();
                        if (item != null)
                            break;
                    }
                }

                var container = (ListViewItem)NavMenuList.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;
                NavMenuList.SetSelectedItem(container);
                if (container != null) container.IsTabStop = true;
            }
        }