chromecast/service/cast_service.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 #ifndef CHROMECAST_SERVICE_CAST_SERVICE_H_
   6 #define CHROMECAST_SERVICE_CAST_SERVICE_H_
   7
   8 #include "base/callback.h"
   9 #include "base/macros.h"
  10 #include "base/memory/scoped_ptr.h"
  11
  12 namespace base {
  13 class ThreadChecker;
  14 }
  15
  16 namespace content {
  17 class BrowserContext;
  18 }
  19
  20 namespace net {
  21 class URLRequestContextGetter;
  22 }
  23
  24 namespace chromecast {
  25
  26 class CastService {
  27  public:
  28   // A callback that will be invoked when the user changes the opt-in stats
  29   // value.
  30   typedef base::Callback<void(bool)> OptInStatsChangedCallback;
  31
  32   // Create() takes a separate url request context getter because the request
  33   // context getter obtained through the browser context might not be
  34   // appropriate for the url requests made by the cast service/reciever.
  35   // For example, on Chromecast, it is needed to pass in a system url request
  36   // context getter that would set the request context for NSS, which the main
  37   // getter doesn't do.
  38   static CastService* Create(
  39       content::BrowserContext* browser_context,
  40       net::URLRequestContextGetter* request_context_getter,
  41       const OptInStatsChangedCallback& opt_in_stats_callback);
  42
  43   virtual ~CastService();
  44
  45   // Start/stop the cast service.
  46   void Start();
  47   void Stop();
  48
  49  protected:
  50   CastService(content::BrowserContext* browser_context,
  51               const OptInStatsChangedCallback& opt_in_stats_callback);
  52   virtual void Initialize() = 0;
  53
  54   // Implementation-specific start/stop behavior.
  55   virtual void StartInternal() = 0;
  56   virtual void StopInternal() = 0;
  57
  58   content::BrowserContext* browser_context() const { return browser_context_; }
  59   const OptInStatsChangedCallback& opt_in_stats_callback() const {
  60     return opt_in_stats_callback_;
  61   }
  62
  63  private:
  64   content::BrowserContext* const browser_context_;
  65   const OptInStatsChangedCallback opt_in_stats_callback_;
  66   bool stopped_;
  67   const scoped_ptr<base::ThreadChecker> thread_checker_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(CastService);
  70 };
  71
  72 }  // namespace chromecast
  73
  74 #endif  // CHROMECAST_SERVICE_CAST_SERVICE_H_