(Reland) Service Worker: Handle same-scope, new script registration

content/browser/service_worker/service_worker_registration.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/service_worker/service_worker_version.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "url/gurl.h"
 
 namespace content {
 
 class ServiceWorkerRegistrationInfo;
 class ServiceWorkerVersion;
 
-// This class represents a service worker registration. The
-// scope is constant for the life of the persistent
-// registration. It's refcounted to facillitate multiple controllees
-// being associated with the same registration.
+// This class represents a Service Worker registration. The scope is constant
+// for the life of the persistent registration. It's refcounted to facilitate
+// multiple controllees being associated with the same registration.
 class CONTENT_EXPORT ServiceWorkerRegistration
     : NON_EXPORTED_BASE(public base::RefCounted<ServiceWorkerRegistration>),
       public ServiceWorkerVersion::Listener {
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode status)> StatusCallback;
 
   class Listener {
    public:
     virtual void OnVersionAttributesChanged(
         ServiceWorkerRegistration* registration,
         ChangedVersionAttributesMask changed_mask,
-        const ServiceWorkerRegistrationInfo& info) = 0;
+        const ServiceWorkerRegistrationInfo& info) {}
     virtual void OnRegistrationFailed(
-        ServiceWorkerRegistration* registration) = 0;
+        ServiceWorkerRegistration* registration) {}
+    virtual void OnRegistrationFinishedUninstalling(
+        ServiceWorkerRegistration* registration) {}
   };
 
   ServiceWorkerRegistration(const GURL& pattern,
                             int64 registration_id,
                             base::WeakPtr<ServiceWorkerContextCore> context);
 
   int64 id() const { return registration_id_; }
   const GURL& pattern() const { return pattern_; }
 
   bool is_deleted() const { return is_deleted_; }
@@ skipping 37 matching lines @@
   // has no controllees. If there are no controllees at the time the method
   // is called, activation is initiated immediately.
   void ActivateWaitingVersionWhenReady();
 
   // Triggers the [[ClearRegistration]] algorithm when the currently
   // active version has no controllees. Deletes this registration
   // from storage immediately.
   void ClearWhenReady();
 
   // Restores this registration in storage and cancels the pending
-  // [[ClearRegistration]] algorithm. If the algorithm was already triggered,
-  // does nothing.
-  void AbortPendingClear();
+  // [[ClearRegistration]] algorithm.
+  void AbortPendingClear(const StatusCallback& callback);
 
   // The time of the most recent update check.
   base::Time last_update_check() const { return last_update_check_; }
   void set_last_update_check(base::Time last) { last_update_check_ = last; }
 
  private:
   friend class base::RefCounted<ServiceWorkerRegistration>;
 
   virtual ~ServiceWorkerRegistration();
 
@@ skipping 10 matching lines @@
 
   // This method corresponds to the [[Activate]] algorithm.
   void ActivateWaitingVersion();
   void OnActivateEventFinished(
       ServiceWorkerVersion* activating_version,
       ServiceWorkerStatusCode status);
   void OnDeleteFinished(ServiceWorkerStatusCode status);
 
   // This method corresponds to the [[ClearRegistration]] algorithm.
   void Clear();
-  void OnStoreFinished(scoped_refptr<ServiceWorkerVersion> version,
-                       ServiceWorkerStatusCode status);
+
+  void OnRestoreFinished(const StatusCallback& callback,
+                         scoped_refptr<ServiceWorkerVersion> version,
+                         ServiceWorkerStatusCode status);
 
   const GURL pattern_;
   const int64 registration_id_;
   bool is_deleted_;
   bool is_uninstalling_;
   bool should_activate_when_ready_;
   base::Time last_update_check_;
   scoped_refptr<ServiceWorkerVersion> active_version_;
   scoped_refptr<ServiceWorkerVersion> waiting_version_;
   scoped_refptr<ServiceWorkerVersion> installing_version_;
   ObserverList<Listener> listeners_;
   base::WeakPtr<ServiceWorkerContextCore> context_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistration);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_H_