content/browser/geolocation/geolocation_service_impl.h

   1 // Copyright 2014 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 "base/memory/scoped_ptr.h"
   6 #include "content/browser/geolocation/geolocation_provider_impl.h"
   7 #include "content/common/geolocation_service.mojom.h"
   8
   9 #ifndef CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
  10 #define CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_
  11
  12 namespace content {
  13
  14 class GeolocationProvider;
  15 class GeolocationServiceContext;
  16
  17 // Implements the GeolocationService Mojo interface.
  18 class GeolocationServiceImpl : public mojo::InterfaceImpl<GeolocationService> {
  19  public:
  20   // |context| must outlive this object. |update_callback| will be
  21   // called when location updates are sent.
  22   GeolocationServiceImpl(GeolocationServiceContext* context,
  23                          const base::Closure& update_callback);
  24   ~GeolocationServiceImpl() override;
  25
  26   // Starts listening for updates.
  27   void StartListeningForUpdates();
  28
  29   // Pauses and resumes sending updates to the client of this instance.
  30   void PauseUpdates();
  31   void ResumeUpdates();
  32
  33   // Enables and disables geolocation override.
  34   void SetOverride(const Geoposition& position);
  35   void ClearOverride();
  36
  37  private:
  38   // GeolocationService:
  39   void SetHighAccuracy(bool high_accuracy) override;
  40
  41   // mojo::InterfaceImpl:
  42   void OnConnectionError() override;
  43
  44   void OnLocationUpdate(const Geoposition& position);
  45
  46   // Owns this object.
  47   GeolocationServiceContext* context_;
  48   scoped_ptr<GeolocationProvider::Subscription> geolocation_subscription_;
  49   base::Closure update_callback_;
  50
  51   // Valid iff SetOverride() has been called and ClearOverride() has not
  52   // subsequently been called.
  53   Geoposition position_override_;
  54
  55   // Whether this instance is currently observing location updates with high
  56   // accuracy.
  57   bool high_accuracy_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(GeolocationServiceImpl);
  60 };
  61
  62 }  // namespace content
  63
  64 #endif  // CONTENT_BROWSER_GEOLOCATION_GEOLOCATION_SERVICE_IMPL_H_