public ManageViewModel(IDataContext data, INavigationService navigationService)
{
_data = data;
_navigationService = navigationService;
var places = data.Places;
Routes = new AdaptedObservableCollection<Route, RouteSummaryViewModel>(route => new RouteSummaryViewModel(route), source: _data.Routes);
PersonalPlaces = new AdaptedObservableCollection<Place, CheckableViewModel<Place>>(place => new CheckableViewModel<Place> {Data = place}, place => !place.IsSearchResult, (p1, p2) => String.CompareOrdinal(p1.Name, p2.Name), places);
SearchResults = new AdaptedObservableCollection<Place, CheckableViewModel<Place>>(place => new CheckableViewModel<Place> {Data = place}, place => place.IsSearchResult, (p1, p2) => String.CompareOrdinal(p1.Name, p2.Name), places);
CommandDeleteSelectedItems = new DelegateCommand(OnDeleteSelectedItems);
CommandSelectAllItems = new DelegateCommand(OnSelectAllItems);
CommandClearSelection = new DelegateCommand(OnClearSelection);
CommandPinSelectedSearchResult = new DelegateCommand(OnPinSelectedSearchResult);
CommandGoToPlace = new DelegateCommand<Place>(OnGoToPlace);
CommandShowPlaceDetails = new DelegateCommand<Place>(OnShowPlaceDetails);
CommandShowRouteDetails = new DelegateCommand<Route>(OnShowRouteDetails);
_navigationService.Navigating += OnNavigating;
}
/// <summary>
/// Initializes a new instance of the <see cref="MapViewModel" /> class.
/// </summary>
public MapViewModel()
{
_data = ApplicationContext.Data;
_configuration = ApplicationContext.Configuration;
_navigation = ApplicationContext.NavigationService;
if (IsCompassSupported)
{
_compass = new Compass {TimeBetweenUpdates = TimeSpan.FromMilliseconds(200)};
_compass.CurrentValueChanged += OnCompassReadingChanged;
}
// Initialise local properties.
VisualState = new ObservableValue<VisualStates>();
Suggestions = new ReadOnlyObservableCollection<SearchSuggestion>(_suggestions);
Pushpins = new AdaptedObservableCollection<Place, PlaceViewModel>(p => new PlaceViewModel(p, this), source: _data.Places);
Routes = new AdaptedObservableCollection<Route, RouteViewModel>(r => new RouteViewModel(r, this), source: _data.Routes);
DepartureLocation = new RouteLocation();
ArrivalLocation = new RouteLocation();
// Initialise commands.
CommandGetSuggestions = new DelegateCommand(OnGetSuggestions);
CommandSearch = new DelegateCommand(OnSearch);
CommandAddPlace = new DelegateCommand<Location>(OnAddPlace);
CommandSelectPushpin = new DelegateCommand<PlaceViewModel>(vm => SelectedPushpin = vm);
CommandSelectRoute = new DelegateCommand<RouteViewModel>(vm => SelectedRoute = vm);
CommandDeletePlace = new DelegateCommand<PlaceViewModel>(OnDeletePlace);
CommandUpdatePlace = new DelegateCommand<PlaceViewModel>(OnUpdatePlace);
CommandStopTrackingCurrentLocation = new DelegateCommand(OnStopTrackingCurrentLocation);
CommandGoToDefaultState = new DelegateCommand(OnGoToDefaultState);
CommandAddCurrentPlace = new DelegateCommand(() => OnAddPlace(CurrentLocation.ToLocalLocation()), () => CurrentLocation != null && !CurrentLocation.IsUnknown);
CommandZoomIn = new DelegateCommand(() =>
{
if (ZoomLevel.Value < MaxZoomLevel)
ZoomLevel.Value = Math.Min(ZoomLevel.Value += ZoomStep, MaxZoomLevel);
});
CommandZoomOut = new DelegateCommand(() =>
{
if (ZoomLevel.Value > MinZoomLevel)
ZoomLevel.Value = Math.Max(ZoomLevel.Value -= ZoomStep, MinZoomLevel);
});
CommandShowStreetLayer = new DelegateCommand(() => _data.MapBaseLayer.Value = Layer.Street);
CommandShowSatelliteHybridLayer = new DelegateCommand(() => _data.MapBaseLayer.Value = Layer.SatelliteHybrid);
CommandToggleMapOverlay = new DelegateCommand<Layer>(_data.ToggleMapOverlay);
CommandToggleToolbar = new DelegateCommand(_configuration.ToggleToolbarState);
CommandSetDepartLocationToCurrentLocation = new DelegateCommand(() => DepartureLocation.Address = CurrentLocationString);
CommandSetArriveLocationToCurrentLocation = new DelegateCommand(() => ArrivalLocation.Address = CurrentLocationString);
CommandRoute = new DelegateCommand(OnRoute);
CommandActivate = new DelegateCommand(OnActivate);
CommandDeactivate = new DelegateCommand(OnDeactivate);
CommandSwapRouteLocations = new DelegateCommand(OnSwapRouteLocations);
CommandSelectContactAddress = new DelegateCommand(OnSelectContactAddress);
CommandSelectDepartLocationFromContacts = new DelegateCommand(OnSelectDepartLocationFromContacts);
CommandSelectArriveLocationFromContacts = new DelegateCommand(OnSelectArriveLocationFromContacts);
// Initialise application bar button and menu items sources.
InitializeAppBarButtonSources();
InitializeAppBarMenuItemsSource();
// Handle events.
Pushpins.CollectionChanged += OnPushpinsCollectionChanged;
_data.MapBaseLayer.ValueChanged += (old, @new) => RaisePropertyChanged(IsStreetLayerVisibleProperty, IsSatelliteHybridLayerVisibleProperty);
_data.SelectedPlace.ValueChanged += (old, @new) => SelectedPushpin = Pushpins.FirstOrDefault(p => p.Data == @new);
_data.MapOverlays.CollectionChanged += (s, e) => RaisePropertyChanged(IsTrafficLayerVisibleProperty, IsTransitLayerVisibleProperty);
_data.ClearRoutesBeforeAddingNewRoute.ValueChanged += (old, @new) => RaisePropertyChanged(GetRouteButtonTextProperty);
VisualState.ValueChanged += OnVisualStateChanged;
IsTrackingCurrentLocation.ValueChanged += OnIsTrackingCurrentLocationValueChanged;
// Automatically track current position at first run.
if (_data.LastRanVersion == null)
IsTrackingCurrentLocation.Value = true;
#if DEBUG
if (DesignerProperties.IsInDesignTool) return;
#endif
// Initialise geo-coordinate watcher.
_geoWatcher = ApplicationContext.GeoCoordinateWatcher;
_geoWatcher.PositionChanged += OnGeoWatcherPositionChanged;
// Try centering on current location if available.
if (IsTrackingCurrentLocation.Value)
{
if (!_geoWatcher.Position.Location.IsUnknown)
{
Center.Value = _geoWatcher.Position.Location;
ZoomLevel.Value = 15;
}
}
}
