The Tor Browser: dom/src/geolocation/nsGeoPositionIPCSerialiser.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef dom_src_geolocation_IPC_serialiser

     6 #define dom_src_geolocation_IPC_serialiser

     8 #include "ipc/IPCMessageUtils.h"

     9 #include "nsGeoPosition.h"

    10 #include "nsIDOMGeoPosition.h"

    12 typedef nsIDOMGeoPosition* GeoPosition;

    14 namespace IPC {

    16 template <>

    17 struct ParamTraits<nsIDOMGeoPositionCoords*>

    18 {

    19   typedef nsIDOMGeoPositionCoords* paramType;

    21   // Function to serialize a geoposition

    22   static void Write(Message *aMsg, const paramType& aParam)

    23   {

    24     bool isNull = !aParam;

    25     WriteParam(aMsg, isNull);

    26     // If it is a null object, then we are done

    27     if (isNull) return;

    29     double coordData;

    31     aParam->GetLatitude(&coordData);

    32     WriteParam(aMsg, coordData);

    34     aParam->GetLongitude(&coordData);

    35     WriteParam(aMsg, coordData);

    37     aParam->GetAltitude(&coordData);

    38     WriteParam(aMsg, coordData);

    40     aParam->GetAccuracy(&coordData);

    41     WriteParam(aMsg, coordData);

    43     aParam->GetAltitudeAccuracy(&coordData);

    44     WriteParam(aMsg, coordData);

    46     aParam->GetHeading(&coordData);

    47     WriteParam(aMsg, coordData);

    49     aParam->GetSpeed(&coordData);

    50     WriteParam(aMsg, coordData);

    51   }

    53   // Function to de-serialize a geoposition

    54   static bool Read(const Message* aMsg, void **aIter, paramType* aResult)

    55   {

    56     // Check if it is the null pointer we have transfered

    57     bool isNull;

    58     if (!ReadParam(aMsg, aIter, &isNull)) return false;

    60     if (isNull) {

    61       *aResult = 0;

    62       return true;

    63     }

    65     double latitude;

    66     double longitude;

    67     double altitude;

    68     double accuracy;

    69     double altitudeAccuracy;

    70     double heading;

    71     double speed;

    73     // It's not important to us where it fails, but rather if it fails

    74     if (!(   ReadParam(aMsg, aIter, &latitude         )

    75           && ReadParam(aMsg, aIter, &longitude        )

    76           && ReadParam(aMsg, aIter, &altitude         )

    77           && ReadParam(aMsg, aIter, &accuracy         )

    78           && ReadParam(aMsg, aIter, &altitudeAccuracy )

    79           && ReadParam(aMsg, aIter, &heading          )

    80           && ReadParam(aMsg, aIter, &speed            ))) return false;

    82     // We now have all the data

    83     *aResult = new nsGeoPositionCoords(latitude,         /* aLat     */

    84                                        longitude,        /* aLong    */

    85                                        altitude,         /* aAlt     */

    86                                        accuracy,         /* aHError  */

    87                                        altitudeAccuracy, /* aVError  */

    88                                        heading,          /* aHeading */

    89                                        speed             /* aSpeed   */

    90                                       );

    91     return true;

    93   }

    95 };

    97 template <>

    98 struct ParamTraits<nsIDOMGeoPosition*>

    99 {

   100   typedef nsIDOMGeoPosition* paramType;

   102   // Function to serialize a geoposition

   103   static void Write(Message *aMsg, const paramType& aParam)

   104   {

   105     bool isNull = !aParam;

   106     WriteParam(aMsg, isNull);

   107     // If it is a null object, then we are done

   108     if (isNull) return;

   110     DOMTimeStamp timeStamp;

   111     aParam->GetTimestamp(&timeStamp);

   112     WriteParam(aMsg, timeStamp);

   114     nsCOMPtr<nsIDOMGeoPositionCoords> coords;

   115     aParam->GetCoords(getter_AddRefs(coords));

   116     WriteParam(aMsg, coords.get());

   117   }

   119   // Function to de-serialize a geoposition

   120   static bool Read(const Message* aMsg, void **aIter, paramType* aResult)

   121   {

   122     // Check if it is the null pointer we have transfered

   123     bool isNull;

   124     if (!ReadParam(aMsg, aIter, &isNull)) return false;

   126     if (isNull) {

   127       *aResult = 0;

   128       return true;

   129     }

   131     DOMTimeStamp timeStamp;

   132     nsIDOMGeoPositionCoords* coords = nullptr;

   134     // It's not important to us where it fails, but rather if it fails

   135     if (!ReadParam(aMsg, aIter, &timeStamp) ||

   136         !ReadParam(aMsg, aIter, &coords)) {

   137       nsCOMPtr<nsIDOMGeoPositionCoords> tmpcoords = coords;

   138       return false;

   139     }

   141     *aResult = new nsGeoPosition(coords, timeStamp);

   143     return true;

   144   };

   146 };

   148 }

   150 #endif

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