src/Tizen.Maps/Tizen.Maps/PlaceSearchRequest.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
  20 namespace Tizen.Maps
  21 {
  22     /// <summary>
  23     /// Place search request for Tizen map service
  24     /// </summary>
  25     /// <since_tizen>3</since_tizen>
  26     public class PlaceSearchRequest : MapServiceRequest<Place>
  27     {
  28         private Interop.SearchPlaceCallback _placeCallback;
  29         private List<Place> _placeList = new List<Place>();
  30
  31         internal PlaceSearchRequest(MapService service, Geocoordinates position, int distance) : this(service, ServiceRequestType.SearchPlace)
  32         {
  33             startExecutionAction = new Action(() =>
  34             {
  35                 int requestID;
  36                 errMessage = $"Failed to get place list for given co-ordinate {position} and distance {distance}";
  37                 errorCode = _service.handle.SearchPlace(position.handle, distance, _service.PlaceSearchFilter.handle, _service.Preferences.handle, _placeCallback, IntPtr.Zero, out requestID);
  38                 if (errorCode.IsFailed() && errorCode != Interop.ErrorCode.Canceled)
  39                 {
  40                     _requestTask?.TrySetException(errorCode.GetException(errMessage));
  41                 }
  42                 _requestID = requestID;
  43             });
  44         }
  45
  46         internal PlaceSearchRequest(MapService service, Area boundary) : this(service, ServiceRequestType.SearchPlaceByArea)
  47         {
  48             startExecutionAction = new Action(() =>
  49             {
  50                 int requestID;
  51                 errMessage = $"Failed to get place list for given boundary";
  52                 errorCode = _service.handle.SearchPlaceByArea(boundary.handle, _service.PlaceSearchFilter.handle, _service.Preferences.handle, _placeCallback, IntPtr.Zero, out requestID);
  53                 if (errorCode.IsFailed() && errorCode != Interop.ErrorCode.Canceled)
  54                 {
  55                     _requestTask?.TrySetException(errorCode.GetException(errMessage));
  56                 }
  57                 _requestID = requestID;
  58             });
  59         }
  60
  61         internal PlaceSearchRequest(MapService service, string address, Area boundary) : this(service, ServiceRequestType.SearchPlaceByAddress)
  62         {
  63             startExecutionAction = new Action(() =>
  64             {
  65                 int requestID;
  66                 errMessage = $"Failed to get coordinates for address {address} in given boundary";
  67                 errorCode = _service.handle.SearchPlaceByAddress(address, boundary.handle, _service.PlaceSearchFilter.handle, _service.Preferences.handle, _placeCallback, IntPtr.Zero, out requestID);
  68                 if (errorCode.IsFailed() && errorCode != Interop.ErrorCode.Canceled)
  69                 {
  70                     _requestTask?.TrySetException(errorCode.GetException(errMessage));
  71                 }
  72                 _requestID = requestID;
  73             });
  74         }
  75
  76         private PlaceSearchRequest(MapService service, ServiceRequestType type) : base(service, type)
  77         {
  78             // The Maps Service invokes this callback while iterating through the set of obtained Place data.
  79             _placeCallback = (result, id, index, total, place, userData) =>
  80             {
  81                 errorCode = result;
  82                 if (result.IsSuccess())
  83                 {
  84                     // The parameter place must be released using maps_place_destroy().
  85                     var placeHandle = new Interop.PlaceHandle(place, needToRelease: true);
  86                     _placeList.Add(new Place(placeHandle));
  87                     if (_placeList.Count == total)
  88                     {
  89                         _requestTask?.TrySetResult(_placeList);
  90                     }
  91                     return true;
  92                 }
  93                 else
  94                 {
  95                     // If search is failed, the value of total is 0 and place is NULL
  96                     _requestTask?.TrySetException(errorCode.GetException(errMessage));
  97                     return false;
  98                 }
  99             };
 100         }
 101     }
 102 }