src/Tizen.Maps/Tizen.Maps/RouteSearchRequest.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.Linq;
  20
  21 namespace Tizen.Maps
  22 {
  23     /// <summary>
  24     /// Route search request for Tizen map service requests
  25     /// </summary>
  26     public class RouteSearchRequest : MapServiceRequest<Route>
  27     {
  28         private Interop.SearchRouteCallback _routeCallback;
  29         private List<Route> _routeList = new List<Route>();
  30
  31         private Geocoordinates _to;
  32         private Geocoordinates _from;
  33         private List<Geocoordinates> _waypoints = new List<Geocoordinates>();
  34
  35         internal RouteSearchRequest(MapService service, Geocoordinates from, Geocoordinates to) : this(service, ServiceRequestType.SearchRoute)
  36         {
  37             _to = to;
  38             _from = from;
  39             startExecutionAction = new Action(() =>
  40             {
  41                 int requestID;
  42                 errMessage = $"Failed to get route list for given origin {_from} and destination {_to}";
  43                 if (_waypoints?.Count == 0)
  44                 {
  45                     _type = ServiceRequestType.SearchRoute;
  46                     errorCode = _service.handle.SearchRoute(_from.handle, _to.handle, _service.Preferences.handle, _routeCallback, IntPtr.Zero, out requestID);
  47                     if (errorCode.IsFailed() && errorCode != Interop.ErrorCode.Canceled)
  48                     {
  49                         _requestTask?.TrySetException(errorCode.GetException(errMessage));
  50                     }
  51                 }
  52                 else
  53                 {
  54                     _type = ServiceRequestType.SearchRouteWithWaypoints;
  55
  56                     var waypoints = GetCoordinateListForWaypoints();
  57                     errorCode = _service.handle.SearchRouteWaypoints(waypoints, waypoints.Length, _service.Preferences.handle, _routeCallback, IntPtr.Zero, out requestID);
  58                     if (errorCode.IsFailed() && errorCode != Interop.ErrorCode.Canceled)
  59                     {
  60                         _requestTask?.TrySetException(errorCode.GetException(errMessage));
  61                     }
  62                 }
  63                 _requestID = requestID;
  64             });
  65         }
  66
  67
  68         private RouteSearchRequest(MapService service, ServiceRequestType type) : base(service, type)
  69         {
  70             // The Maps Service invokes this callback while iterating through the set of obtained Routes.
  71             _routeCallback = (result, id, index, total, route, userData) =>
  72             {
  73                 errorCode = result;
  74                 if (result.IsSuccess())
  75                 {
  76                     // The parameter route must be released using maps_route_destroy().
  77                     var routeHandle = new Interop.RouteHandle(route, needToRelease: true);
  78                     _routeList.Add(new Route(routeHandle));
  79                     if (_routeList.Count == total)
  80                     {
  81                         _requestTask?.TrySetResult(_routeList);
  82                     }
  83                     return true;
  84                 }
  85                 else
  86                 {
  87                     // If search is failed, the value of total is 0 and route is NULL.
  88                     _requestTask?.TrySetException(errorCode.GetException(errMessage));
  89                     return false;
  90                 }
  91             };
  92         }
  93
  94         /// <summary>
  95         /// Gets or sets a list of way-points to cover between origin and destination.
  96         /// </summary>
  97         public IEnumerable<Geocoordinates> Waypoints
  98         {
  99             get
 100             {
 101                 return _waypoints;
 102             }
 103             set
 104             {
 105                 _waypoints = value.ToList();
 106             }
 107         }
 108
 109         private IntPtr[] GetCoordinateListForWaypoints()
 110         {
 111             var waypoints = new IntPtr[_waypoints.Count + 2];
 112             waypoints[0] = _from.handle;
 113             for (int i = 0; i < _waypoints.Count; ++i)
 114             {
 115                 waypoints[i + 1] = _waypoints[i].handle;
 116             }
 117             waypoints[waypoints.Length - 1] = _to.handle;
 118             return waypoints;
 119         }
 120     }
 121 }