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authorJason Smith <jason.smith@xamarin.com>2016-03-22 20:02:25 (GMT)
committerJason Smith <jason.smith@xamarin.com>2016-03-22 23:13:41 (GMT)
commit17fdde66d94155fc62a034fa6658995bef6fd6e5 (patch)
treeb5e5073a2a7b15cdbe826faa5c763e270a505729 /Xamarin.Forms.Maps.WP8/GeocoderBackend.cs
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Diffstat (limited to 'Xamarin.Forms.Maps.WP8/GeocoderBackend.cs')
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diff --git a/Xamarin.Forms.Maps.WP8/GeocoderBackend.cs b/Xamarin.Forms.Maps.WP8/GeocoderBackend.cs
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+´╗┐using System;
+using System.Collections.Generic;
+using System.Device.Location;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.Phone.Maps.Services;
+
+namespace Xamarin.Forms.Maps.WP8
+{
+ internal class GeocoderBackend
+ {
+ // Eventually this should be sanely set to match either where the map is centered or where the user is.
+ internal static Position PositionForGeocoding { get; set; }
+
+ public static void Register()
+ {
+ Geocoder.GetPositionsForAddressAsyncFunc = GetPositionsForAddress;
+ Geocoder.GetAddressesForPositionFuncAsync = GetAddressesForPositionAsync;
+ }
+
+ // Thank you to craig dunn
+ static string AddressToString(MapAddress address)
+ {
+ string building = "", house = "", city = "", country = "";
+
+ var bldg = new List<string>();
+ if (!"".Equals(address.BuildingRoom))
+ bldg.Add(address.BuildingRoom);
+ if (!"".Equals(address.BuildingFloor))
+ bldg.Add(address.BuildingFloor);
+ if (!"".Equals(address.BuildingName))
+ bldg.Add(address.BuildingName);
+ if (!"".Equals(address.BuildingZone))
+ bldg.Add(address.BuildingZone);
+ if (bldg.Count > 0)
+ building = string.Join(" ", bldg) + Environment.NewLine;
+
+ var hs = new List<string>();
+ if (!"".Equals(address.HouseNumber))
+ hs.Add(address.HouseNumber);
+ if (!"".Equals(address.Street))
+ hs.Add(address.Street);
+ if (hs.Count > 0)
+ house = string.Join(" ", hs) + Environment.NewLine;
+
+ var cs = new List<string>();
+ if (!"".Equals(address.City))
+ cs.Add(address.City);
+ if (!"".Equals(address.State))
+ cs.Add(address.State);
+ else if (!"".Equals(address.Province))
+ cs.Add(address.Province);
+ if (!"".Equals(address.PostalCode))
+ cs.Add(address.PostalCode);
+ if (cs.Count > 0)
+ city = string.Join(" ", cs) + Environment.NewLine;
+
+ if (!"".Equals(address.Country))
+ country = address.Country;
+ return building + house + city + country;
+ }
+
+ static Task<IEnumerable<string>> GetAddressesForPositionAsync(Position position)
+ {
+ var source = new TaskCompletionSource<IEnumerable<string>>();
+
+ var query = new ReverseGeocodeQuery
+ {
+ GeoCoordinate = new GeoCoordinate(position.Latitude, position.Longitude)
+ };
+ query.QueryCompleted +=
+ (sender, args) => source.SetResult(args.Result.Select(r => AddressToString(r.Information.Address)).ToArray());
+ query.QueryAsync();
+
+ return source.Task;
+ }
+
+ static Task<IEnumerable<Position>> GetPositionsForAddress(string s)
+ {
+ var source = new TaskCompletionSource<IEnumerable<Position>>();
+ var query = new GeocodeQuery
+ {
+ SearchTerm = s,
+ GeoCoordinate = new GeoCoordinate(PositionForGeocoding.Latitude, PositionForGeocoding.Longitude)
+ };
+ query.QueryCompleted +=
+ (sender, args) =>
+ source.SetResult(
+ args.Result.Select(r => new Position(r.GeoCoordinate.Latitude, r.GeoCoordinate.Longitude)).ToArray());
+ query.QueryAsync();
+
+ return source.Task;
+ }
+ }
+} \ No newline at end of file