chrome/browser/extensions/api/location/location_api.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/extensions/api/location/location_api.h"
   6
   7 #include "chrome/browser/extensions/api/location/location_manager.h"
   8 #include "chrome/common/extensions/api/location.h"
   9 #include "extensions/common/error_utils.h"
  10
  11 // TODO(vadimt): add tests.
  12
  13 namespace location = extensions::api::location;
  14 namespace WatchLocation = location::WatchLocation;
  15 namespace ClearWatch = location::ClearWatch;
  16
  17 namespace extensions {
  18
  19 const char kMustBePositive[] = "'*' must be 0 or greater.";
  20 const char kMinDistanceInMeters[] = "minDistanceInMeters";
  21 const char kMinTimeInMilliseconds[] = "minTimeInMilliseconds";
  22
  23 bool IsNegative(double* value) {
  24   return value && *value < 0.0;
  25 }
  26
  27 bool LocationWatchLocationFunction::RunSync() {
  28   scoped_ptr<WatchLocation::Params> params(
  29       WatchLocation::Params::Create(*args_));
  30   EXTENSION_FUNCTION_VALIDATE(params.get());
  31
  32   double* min_distance_in_meters =
  33       params->request_info.min_distance_in_meters.get();
  34   if (IsNegative(min_distance_in_meters)) {
  35     error_ = ErrorUtils::FormatErrorMessage(
  36         kMustBePositive,
  37         kMinDistanceInMeters);
  38     return false;
  39   }
  40
  41   double* min_time_in_milliseconds =
  42       params->request_info.min_time_in_milliseconds.get();
  43   if (IsNegative(min_time_in_milliseconds)) {
  44     error_ = ErrorUtils::FormatErrorMessage(
  45         kMustBePositive,
  46         kMinTimeInMilliseconds);
  47     return false;
  48   }
  49
  50   // TODO(vadimt): validate and use params->request_info.maximumAge
  51   LocationManager::Get(browser_context())
  52       ->AddLocationRequest(extension_id(),
  53                            params->name,
  54                            min_distance_in_meters,
  55                            min_time_in_milliseconds);
  56
  57   return true;
  58 }
  59
  60 bool LocationClearWatchFunction::RunSync() {
  61   scoped_ptr<ClearWatch::Params> params(
  62       ClearWatch::Params::Create(*args_));
  63   EXTENSION_FUNCTION_VALIDATE(params.get());
  64
  65   LocationManager::Get(browser_context())
  66       ->RemoveLocationRequest(extension_id(), params->name);
  67
  68   return true;
  69 }
  70
  71 }  // namespace extensions