src/chrome/browser/extensions/api/push_messaging/push_messaging_invalidation_handler.h

   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 #ifndef CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "base/basictypes.h"
  13 #include "base/compiler_specific.h"
  14 #include "base/threading/thread_checker.h"
  15 #include "chrome/browser/extensions/api/push_messaging/push_messaging_invalidation_mapper.h"
  16 #include "components/invalidation/invalidation_handler.h"
  17 #include "components/invalidation/invalidation_util.h"
  18
  19 namespace invalidation {
  20 class InvalidationService;
  21 }
  22
  23 namespace extensions {
  24
  25 class PushMessagingInvalidationHandlerDelegate;
  26
  27 // This class maps extension IDs to the corresponding object IDs, manages
  28 // invalidation registrations, and dispatches callbacks for any invalidations
  29 // received.
  30 class PushMessagingInvalidationHandler : public PushMessagingInvalidationMapper,
  31                                          public syncer::InvalidationHandler {
  32  public:
  33   // |service| and |delegate| must remain valid for the lifetime of this object.
  34   // |extension_ids| is the set of extension IDs for which push messaging is
  35   // enabled.
  36   PushMessagingInvalidationHandler(
  37       invalidation::InvalidationService* service,
  38       PushMessagingInvalidationHandlerDelegate* delegate);
  39   ~PushMessagingInvalidationHandler() override;
  40
  41   // PushMessagingInvalidationMapper implementation.
  42   void SuppressInitialInvalidationsForExtension(
  43       const std::string& extension_id) override;
  44   void RegisterExtension(const std::string& extension_id) override;
  45   void UnregisterExtension(const std::string& extension_id) override;
  46
  47   // InvalidationHandler implementation.
  48   void OnInvalidatorStateChange(syncer::InvalidatorState state) override;
  49   void OnIncomingInvalidation(
  50       const syncer::ObjectIdInvalidationMap& invalidation_map) override;
  51   std::string GetOwnerName() const override;
  52
  53   const std::set<std::string>& GetRegisteredExtensionsForTest() const {
  54     return registered_extensions_;
  55   }
  56
  57  private:
  58   void UpdateRegistrations();
  59
  60   base::ThreadChecker thread_checker_;
  61   invalidation::InvalidationService* const service_;
  62   std::set<std::string> registered_extensions_;
  63   syncer::ObjectIdSet suppressed_ids_;
  64   PushMessagingInvalidationHandlerDelegate* const delegate_;
  65   std::map<invalidation::ObjectId,
  66            int64,
  67            syncer::ObjectIdLessThan> max_object_version_map_;
  68
  69   DISALLOW_COPY_AND_ASSIGN(PushMessagingInvalidationHandler);
  70 };
  71
  72 }  // namespace extensions
  73
  74 #endif  // CHROME_BROWSER_EXTENSIONS_API_PUSH_MESSAGING_PUSH_MESSAGING_INVALIDATION_HANDLER_H_