content/browser/geolocation/core_location_provider_mac.mm

   1 // Copyright (c) 2012 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 "content/browser/geolocation/core_location_provider_mac.h"
   6
   7 #include "base/logging.h"
   8 #include "base/command_line.h"
   9 #include "content/browser/geolocation/core_location_data_provider_mac.h"
  10 #include "content/public/common/content_switches.h"
  11
  12 namespace content {
  13
  14 CoreLocationProviderMac::CoreLocationProviderMac()
  15     : is_updating_(false) {
  16   data_provider_ = new CoreLocationDataProviderMac();
  17   data_provider_->AddRef();
  18 }
  19
  20 CoreLocationProviderMac::~CoreLocationProviderMac() {
  21   data_provider_->StopUpdating();
  22   data_provider_->Release();
  23 }
  24
  25 bool CoreLocationProviderMac::StartProvider(bool high_accuracy) {
  26   // StartProvider maybe called multiple times. For example, to update the high
  27   // accuracy hint.
  28   // TODO(jknotten): Support high_accuracy hint in underlying data provider.
  29   if (is_updating_)
  30     return true;
  31
  32   is_updating_ = data_provider_->StartUpdating(this);
  33   return true;
  34 }
  35
  36 void CoreLocationProviderMac::StopProvider() {
  37   data_provider_->StopUpdating();
  38   is_updating_ = false;
  39 }
  40
  41 void CoreLocationProviderMac::GetPosition(Geoposition* position) {
  42   DCHECK(position);
  43   *position = position_;
  44   DCHECK(position->Validate() ||
  45          position->error_code != Geoposition::ERROR_CODE_NONE);
  46 }
  47
  48 void CoreLocationProviderMac::SetPosition(Geoposition* position) {
  49   DCHECK(position);
  50   position_ = *position;
  51   DCHECK(position->Validate() ||
  52          position->error_code != Geoposition::ERROR_CODE_NONE);
  53   UpdateListeners();
  54 }
  55
  56 LocationProviderBase* NewSystemLocationProvider() {
  57   if (CommandLine::ForCurrentProcess()->HasSwitch(
  58           switches::kExperimentalLocationFeatures)) {
  59     return new CoreLocationProviderMac;
  60   }
  61   return NULL;
  62 }
  63
  64 }  // namespace content