private async void SearchStopsAsync(string searchText)
{
if (String.IsNullOrWhiteSpace(searchText))
{
StopsResultList.Clear();
MapPlaces.Clear();
return;
}
if (_tokenSource != null && !_tokenSource.IsCancellationRequested)
{
_tokenSource.Cancel();
}
_tokenSource = new CancellationTokenSource();
IsOverviewLoading = true;
ApiResult <IEnumerable <TransitStop> > response = await _networkService.GetStopsAsync(searchText, _tokenSource.Token);
IsOverviewLoading = false;
if (response.IsFailure)
{
// TODO: Show error in list
StopsResultList.Clear();
MapPlaces.Clear();
return;
}
if (_tokenSource.Token.IsCancellationRequested)
{
// TODO: Show error in list
StopsResultList.Clear();
MapPlaces.Clear();
return;
}
// We explicitly enumerate the list into memory here, otherwise Guid.NewGuid() gets called every time we enumerate the list,
// making it impossible to link a Map POI to a list element.
List <TransitStop> stops = response.Result.ToList();
StopsResultList = new ObservableCollection <StopSearchElementViewModel>(
stops.Select(x => new StopSearchElementViewModel(x, _messenger)));
MapPlaces.Clear();
MapPlaces.AddRange(stops.Select(x => new BasicMapPoi
{
Coords = x.Coords,
Name = x.NameAndCode,
Id = x.Id
}));
}
private async Task UpdateNearbyPlaces(Geocircle circle, CancellationToken token)
{
ApiResult <IEnumerable <TransitStop> > response = await _networkService.GetStopsByBoundingRadius(
(float)circle.Center.Latitude,
(float)circle.Center.Longitude,
(int)circle.Radius,
token
);
if (response.IsFailure)
{
// TODO: Show error in list
StopsResultList.Clear();
MapPlaces.Clear();
return;
}
if (token.IsCancellationRequested)
{
// TODO: show error in list
StopsResultList.Clear();
MapPlaces.Clear();
return;
}
// We explicitly enumerate the list into memory here, otherwise Guid.NewGuid() gets called every time we enumerate the list,
// making it impossible to link a Map POI to a list element.
List <TransitStop> stops = response.Result.ToList();
StopsResultList = new ObservableCollection <StopSearchElementViewModel>(
stops.Select(x => new StopSearchElementViewModel(x, _messenger)));
MapPlaces.Clear();
MapPlaces.AddRange(stops.Select(x => new BasicMapPoi
{
Coords = x.Coords,
Name = x.NameAndCode,
Id = x.Id
}));
}
private void UpdateSelectedLine(LineSearchElementViewModel element)
{
MapLines.Clear();
MapPlaces.Clear();
if (element == null)
{
return;
}
List <ColoredMapLinePoint> linePoints = element
.BackingLine
.Points
.Select(x => new ColoredMapLinePoint(
BasicGeopositionExtensions.Create(0.0, x.Longitude, x.Latitude),
HslColors.GetModeColor(element.BackingLine.TransitMode)))
.ToList();
var mapLine = new ColoredMapLine(linePoints);
MapLines.Clear();
MapLines.AddRange(new List <ColoredMapLine> {
mapLine
});
List <IMapPoi> stops = new List <IMapPoi>();
foreach (var stop in element.BackingLine.Stops)
{
stops.Add(new BasicMapPoi {
Coords = stop.Coords, Name = stop.Name
});
}
MapPlaces.AddRange(stops);
_messenger.Send(new MessageTypes.SearchLineSelectionChanged());
}