content/browser/service_worker/service_worker_registration.h

   1 // Copyright 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 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/gtest_prod_util.h"
  10 #include "base/logging.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "content/browser/service_worker/service_worker_version.h"
  14 #include "content/common/content_export.h"
  15 #include "content/common/service_worker/service_worker_types.h"
  16 #include "url/gurl.h"
  17
  18 namespace content {
  19
  20 class ServiceWorkerRegistrationInfo;
  21 class ServiceWorkerVersion;
  22
  23 // This class represents a Service Worker registration. The scope is constant
  24 // for the life of the persistent registration. It's refcounted to facilitate
  25 // multiple controllees being associated with the same registration.
  26 class CONTENT_EXPORT ServiceWorkerRegistration
  27     : NON_EXPORTED_BASE(public base::RefCounted<ServiceWorkerRegistration>),
  28       public ServiceWorkerVersion::Listener {
  29  public:
  30   typedef base::Callback<void(ServiceWorkerStatusCode status)> StatusCallback;
  31
  32   class Listener {
  33    public:
  34     virtual void OnVersionAttributesChanged(
  35         ServiceWorkerRegistration* registration,
  36         ChangedVersionAttributesMask changed_mask,
  37         const ServiceWorkerRegistrationInfo& info) {}
  38     virtual void OnRegistrationFailed(
  39         ServiceWorkerRegistration* registration) {}
  40     virtual void OnRegistrationFinishedUninstalling(
  41         ServiceWorkerRegistration* registration) {}
  42     virtual void OnUpdateFound(
  43         ServiceWorkerRegistration* registration) {}
  44   };
  45
  46   ServiceWorkerRegistration(const GURL& pattern,
  47                             int64 registration_id,
  48                             base::WeakPtr<ServiceWorkerContextCore> context);
  49
  50   int64 id() const { return registration_id_; }
  51   const GURL& pattern() const { return pattern_; }
  52
  53   bool is_deleted() const { return is_deleted_; }
  54   void set_is_deleted(bool deleted) { is_deleted_ = deleted; }
  55
  56   bool is_uninstalling() const { return is_uninstalling_; }
  57   bool is_uninstalled() const { return is_uninstalled_; }
  58
  59   int64_t resources_total_size_bytes() const {
  60     return resources_total_size_bytes_;
  61   }
  62
  63   void set_resources_total_size_bytes(int64_t resources_total_size_bytes) {
  64     resources_total_size_bytes_ = resources_total_size_bytes;
  65   }
  66
  67   ServiceWorkerVersion* active_version() const {
  68     return active_version_.get();
  69   }
  70
  71   ServiceWorkerVersion* waiting_version() const {
  72     return waiting_version_.get();
  73   }
  74
  75   ServiceWorkerVersion* installing_version() const {
  76     return installing_version_.get();
  77   }
  78
  79   ServiceWorkerVersion* GetNewestVersion() const;
  80
  81   void AddListener(Listener* listener);
  82   void RemoveListener(Listener* listener);
  83   void NotifyRegistrationFailed();
  84   void NotifyUpdateFound();
  85
  86   ServiceWorkerRegistrationInfo GetInfo();
  87
  88   // Sets the corresposding version attribute and resets the position
  89   // (if any) left vacant (ie. by a waiting version being promoted).
  90   // Also notifies listeners via OnVersionAttributesChanged.
  91   void SetActiveVersion(ServiceWorkerVersion* version);
  92   void SetWaitingVersion(ServiceWorkerVersion* version);
  93   void SetInstallingVersion(ServiceWorkerVersion* version);
  94
  95   // If version is the installing, waiting, active version of this
  96   // registation, the method will reset that field to NULL, and notify
  97   // listeners via OnVersionAttributesChanged.
  98   void UnsetVersion(ServiceWorkerVersion* version);
  99
 100   // Triggers the [[Activate]] algorithm when the currently active version
 101   // has no controllees. If there are no controllees at the time the method
 102   // is called, activation is initiated immediately.
 103   void ActivateWaitingVersionWhenReady();
 104
 105   // Triggers the [[ClearRegistration]] algorithm when the currently
 106   // active version has no controllees. Deletes this registration
 107   // from storage immediately.
 108   void ClearWhenReady();
 109
 110   // Restores this registration in storage and cancels the pending
 111   // [[ClearRegistration]] algorithm.
 112   void AbortPendingClear(const StatusCallback& callback);
 113
 114   // The time of the most recent update check.
 115   base::Time last_update_check() const { return last_update_check_; }
 116   void set_last_update_check(base::Time last) { last_update_check_ = last; }
 117
 118  private:
 119   friend class base::RefCounted<ServiceWorkerRegistration>;
 120
 121   ~ServiceWorkerRegistration() override;
 122
 123   void SetVersionInternal(
 124       ServiceWorkerVersion* version,
 125       scoped_refptr<ServiceWorkerVersion>* data_member,
 126       int change_flag);
 127   void UnsetVersionInternal(
 128       ServiceWorkerVersion* version,
 129       ChangedVersionAttributesMask* mask);
 130
 131   // ServiceWorkerVersion::Listener override.
 132   void OnNoControllees(ServiceWorkerVersion* version) override;
 133
 134   // This method corresponds to the [[Activate]] algorithm.
 135   void ActivateWaitingVersion();
 136   void OnActivateEventFinished(
 137       ServiceWorkerVersion* activating_version,
 138       ServiceWorkerStatusCode status);
 139   void OnDeleteFinished(ServiceWorkerStatusCode status);
 140
 141   // This method corresponds to the [[ClearRegistration]] algorithm.
 142   void Clear();
 143
 144   void OnRestoreFinished(const StatusCallback& callback,
 145                          scoped_refptr<ServiceWorkerVersion> version,
 146                          ServiceWorkerStatusCode status);
 147
 148   const GURL pattern_;
 149   const int64 registration_id_;
 150   bool is_deleted_;
 151   bool is_uninstalling_;
 152   bool is_uninstalled_;
 153   bool should_activate_when_ready_;
 154   base::Time last_update_check_;
 155   int64_t resources_total_size_bytes_;
 156   scoped_refptr<ServiceWorkerVersion> active_version_;
 157   scoped_refptr<ServiceWorkerVersion> waiting_version_;
 158   scoped_refptr<ServiceWorkerVersion> installing_version_;
 159   ObserverList<Listener> listeners_;
 160   base::WeakPtr<ServiceWorkerContextCore> context_;
 161
 162   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 163 };
 164
 165 }  // namespace content
 166
 167 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_