public DestinationPickPage(string navigraphName, CategoryType category)
{
InitializeComponent();
DestinationItems = new ObservableCollection <DestinationItem>();
_navigraphName = navigraphName;
IEnumerable <Waypoint> waypoints = from region in NavigraphStorage.LoadNavigraphXML(navigraphName).Regions
from waypoint in region.Waypoints
where waypoint.Category.Equals(category)
select waypoint;
foreach (Waypoint waypoint in waypoints)
{
DestinationItems.Add(new DestinationItem
{
ID = waypoint.ID,
WaypointName = waypoint.Name,
Floor = waypoint.Floor
});
}
MyListView.ItemsSource = from waypoint in DestinationItems
group waypoint by waypoint.Floor into waypointGroup
orderby waypointGroup.Key
select new Grouping <int, DestinationItem>(waypointGroup.Key, waypointGroup);
}
/// <summary>
/// If it is the first time to get waypoint then get the value of
/// route options and start the corresponding session.
/// </summary>
private void StartSession(EventArgs args)
{
const int falseInt = -100;
List <int> avoidList = new List <int>();
if (Application.Current.Properties.ContainsKey("AvoidStair"))
{
avoidList.Add(
(bool)Application.Current.Properties["AvoidStair"] ?
(int)ConnectionType.Stair : falseInt);
avoidList.Add(
(bool)Application.Current.Properties["AvoidElevator"] ?
(int)ConnectionType.Elevator : falseInt);
avoidList.Add(
(bool)Application.Current.Properties["AvoidEscalator"] ?
(int)ConnectionType.Escalator : falseInt);
avoidList = avoidList.Distinct().ToList();
avoidList.Remove(falseInt);
}
// Start the session
_session = new Session(
NavigraphStorage.LoadNavigraphXML(_navigraphName),
(args as WaypointScanEventArgs).WaypointID,
_destinationID,
avoidList.ToArray());
_navigationResultHandler = new EventHandler(HandleNavigationResult);
_session.Event.SessionResultHandler += _navigationResultHandler;
WaypointEvent.CurrentWaypointEventHandler += _session.DetectRoute;
}
async void Handle_ItemTapped(object sender, ItemTappedEventArgs e)
{
if (e.Item is Location location)
{
switch (NavigraphStorage.LoadNavigraphXML(location.UserNaming).Name)
{
case "NTUH_YunLin":
var answser = await DisplayAlert("Go to navigation homepage", location.UserNaming, "OK", "Cancel");
if (answser)
{
await Navigation.PushAsync(new NavigationHomePage(location.UserNaming));
}
break;
default:
break;
}
}
}