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comparison: dom/src/geolocation/nsGeoPositionIPCSerialiser.h
dom/src/geolocation/nsGeoPositionIPCSerialiser.h
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| 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/. */ | |
| 4 | |
| 5 #ifndef dom_src_geolocation_IPC_serialiser | |
| 6 #define dom_src_geolocation_IPC_serialiser | |
| 7 | |
| 8 #include "ipc/IPCMessageUtils.h" | |
| 9 #include "nsGeoPosition.h" | |
| 10 #include "nsIDOMGeoPosition.h" | |
| 11 | |
| 12 typedef nsIDOMGeoPosition* GeoPosition; | |
| 13 | |
| 14 namespace IPC { | |
| 15 | |
| 16 template <> | |
| 17 struct ParamTraits<nsIDOMGeoPositionCoords*> | |
| 18 { | |
| 19 typedef nsIDOMGeoPositionCoords* paramType; | |
| 20 | |
| 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; | |
| 28 | |
| 29 double coordData; | |
| 30 | |
| 31 aParam->GetLatitude(&coordData); | |
| 32 WriteParam(aMsg, coordData); | |
| 33 | |
| 34 aParam->GetLongitude(&coordData); | |
| 35 WriteParam(aMsg, coordData); | |
| 36 | |
| 37 aParam->GetAltitude(&coordData); | |
| 38 WriteParam(aMsg, coordData); | |
| 39 | |
| 40 aParam->GetAccuracy(&coordData); | |
| 41 WriteParam(aMsg, coordData); | |
| 42 | |
| 43 aParam->GetAltitudeAccuracy(&coordData); | |
| 44 WriteParam(aMsg, coordData); | |
| 45 | |
| 46 aParam->GetHeading(&coordData); | |
| 47 WriteParam(aMsg, coordData); | |
| 48 | |
| 49 aParam->GetSpeed(&coordData); | |
| 50 WriteParam(aMsg, coordData); | |
| 51 } | |
| 52 | |
| 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; | |
| 59 | |
| 60 if (isNull) { | |
| 61 *aResult = 0; | |
| 62 return true; | |
| 63 } | |
| 64 | |
| 65 double latitude; | |
| 66 double longitude; | |
| 67 double altitude; | |
| 68 double accuracy; | |
| 69 double altitudeAccuracy; | |
| 70 double heading; | |
| 71 double speed; | |
| 72 | |
| 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; | |
| 81 | |
| 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; | |
| 92 | |
| 93 } | |
| 94 | |
| 95 }; | |
| 96 | |
| 97 template <> | |
| 98 struct ParamTraits<nsIDOMGeoPosition*> | |
| 99 { | |
| 100 typedef nsIDOMGeoPosition* paramType; | |
| 101 | |
| 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; | |
| 109 | |
| 110 DOMTimeStamp timeStamp; | |
| 111 aParam->GetTimestamp(&timeStamp); | |
| 112 WriteParam(aMsg, timeStamp); | |
| 113 | |
| 114 nsCOMPtr<nsIDOMGeoPositionCoords> coords; | |
| 115 aParam->GetCoords(getter_AddRefs(coords)); | |
| 116 WriteParam(aMsg, coords.get()); | |
| 117 } | |
| 118 | |
| 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; | |
| 125 | |
| 126 if (isNull) { | |
| 127 *aResult = 0; | |
| 128 return true; | |
| 129 } | |
| 130 | |
| 131 DOMTimeStamp timeStamp; | |
| 132 nsIDOMGeoPositionCoords* coords = nullptr; | |
| 133 | |
| 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 } | |
| 140 | |
| 141 *aResult = new nsGeoPosition(coords, timeStamp); | |
| 142 | |
| 143 return true; | |
| 144 }; | |
| 145 | |
| 146 }; | |
| 147 | |
| 148 } | |
| 149 | |
| 150 #endif |
