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-rw-r--r--chromium/sync/notifier/invalidator_registrar.h92
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diff --git a/chromium/sync/notifier/invalidator_registrar.h b/chromium/sync/notifier/invalidator_registrar.h
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--- a/chromium/sync/notifier/invalidator_registrar.h
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-// Copyright 2012 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 SYNC_NOTIFIER_INVALIDATOR_REGISTRAR_H_
-#define SYNC_NOTIFIER_INVALIDATOR_REGISTRAR_H_
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/observer_list.h"
-#include "base/threading/thread_checker.h"
-#include "sync/base/sync_export.h"
-#include "sync/notifier/invalidation_handler.h"
-#include "sync/notifier/invalidation_util.h"
-
-namespace invalidation {
-class ObjectId;
-} // namespace invalidation
-
-namespace syncer {
-
-class ObjectIdInvalidationMap;
-
-// A helper class for implementations of the Invalidator interface. It helps
-// keep track of registered handlers and which object ID registrations are
-// associated with which handlers, so implementors can just reuse the logic
-// here to dispatch invalidations and other interesting notifications.
-class SYNC_EXPORT InvalidatorRegistrar {
- public:
- InvalidatorRegistrar();
-
- // It is an error to have registered handlers on destruction.
- ~InvalidatorRegistrar();
-
- // Starts sending notifications to |handler|. |handler| must not be NULL,
- // and it must already be registered.
- void RegisterHandler(InvalidationHandler* handler);
-
- // Updates the set of ObjectIds associated with |handler|. |handler| must
- // not be NULL, and must already be registered. An ID must be registered for
- // at most one handler.
- void UpdateRegisteredIds(InvalidationHandler* handler,
- const ObjectIdSet& ids);
-
- // Stops sending notifications to |handler|. |handler| must not be NULL, and
- // it must already be registered. Note that this doesn't unregister the IDs
- // associated with |handler|.
- void UnregisterHandler(InvalidationHandler* handler);
-
- ObjectIdSet GetRegisteredIds(InvalidationHandler* handler) const;
-
- // Returns the set of all IDs that are registered to some handler (even
- // handlers that have been unregistered).
- ObjectIdSet GetAllRegisteredIds() const;
-
- // Sorts incoming invalidations into a bucket for each handler and then
- // dispatches the batched invalidations to the corresponding handler.
- // Invalidations for IDs with no corresponding handler are dropped, as are
- // invalidations for handlers that are not added.
- void DispatchInvalidationsToHandlers(
- const ObjectIdInvalidationMap& invalidation_map);
-
- // Updates the invalidator state to the given one and then notifies
- // all handlers. Note that the order is important; handlers that
- // call GetInvalidatorState() when notified will see the new state.
- void UpdateInvalidatorState(InvalidatorState state);
-
- // Returns the current invalidator state. When called from within
- // InvalidationHandler::OnInvalidatorStateChange(), this returns the
- // updated state.
- InvalidatorState GetInvalidatorState() const;
-
- bool IsHandlerRegisteredForTest(InvalidationHandler* handler) const;
-
- // Needed for death tests.
- void DetachFromThreadForTest();
-
- private:
- typedef std::map<InvalidationHandler*, ObjectIdSet> HandlerIdsMap;
-
- base::ThreadChecker thread_checker_;
- ObserverList<InvalidationHandler> handlers_;
- HandlerIdsMap handler_to_ids_map_;
- InvalidatorState state_;
-
- DISALLOW_COPY_AND_ASSIGN(InvalidatorRegistrar);
-};
-
-} // namespace syncer
-
-#endif // SYNC_NOTIFIER_INVALIDATOR_REGISTRAR_H_