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// Copyright (c) 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 CHROME_BROWSER_SYNC_GLUE_ANDROID_INVALIDATOR_BRIDGE_H_
#define CHROME_BROWSER_SYNC_GLUE_ANDROID_INVALIDATOR_BRIDGE_H_
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/sequenced_task_runner.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "sync/notifier/invalidator.h"
class Profile;
namespace syncer {
class InvalidationHandler;
} // namespace
namespace browser_sync {
// A bridge that converts Chrome events on the UI thread to sync
// notifications on the sync task runner.
//
// Listens to NOTIFICATION_SYNC_REFRESH_REMOTE (on the UI thread) and triggers
// each observer's OnIncomingNotification method on these notifications (on the
// sync task runner). Android clients receive invalidations through this
// mechanism exclusively, hence the name.
class AndroidInvalidatorBridge
: public content::NotificationObserver, syncer::Invalidator {
public:
// Must be created and destroyed on the UI thread.
AndroidInvalidatorBridge(
const Profile* profile,
const scoped_refptr<base::SequencedTaskRunner>& sync_task_runner);
virtual ~AndroidInvalidatorBridge();
// Must be called on the UI thread while the sync task runner is still
// around. No other member functions on the sync thread may be called after
// this is called.
void StopForShutdown();
// Invalidator implementation. Must be called on the sync task runner.
virtual void RegisterHandler(syncer::InvalidationHandler* handler) OVERRIDE;
virtual void UpdateRegisteredIds(syncer::InvalidationHandler* handler,
const syncer::ObjectIdSet& ids) OVERRIDE;
virtual void UnregisterHandler(syncer::InvalidationHandler* handler) OVERRIDE;
virtual void Acknowledge(const invalidation::ObjectId& id,
const syncer::AckHandle& ack_handle) OVERRIDE;
virtual syncer::InvalidatorState GetInvalidatorState() const OVERRIDE;
// The following members of the Invalidator interface are not applicable to
// this invalidator and are implemented as no-ops.
virtual void UpdateCredentials(
const std::string& email, const std::string& token) OVERRIDE;
virtual void SendInvalidation(
const syncer::ObjectIdInvalidationMap& invalidation_map) OVERRIDE;
bool IsHandlerRegisteredForTest(
syncer::InvalidationHandler* handler) const;
syncer::ObjectIdSet GetRegisteredIdsForTest(
syncer::InvalidationHandler* handler) const;
// NotificationObserver implementation. Called on UI thread.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
// Inner class to hold all the bits used on |sync_task_runner_|.
class Core;
const scoped_refptr<base::SequencedTaskRunner> sync_task_runner_;
// Created on the UI thread, used only on |sync_task_runner_|.
const scoped_refptr<Core> core_;
// Used only on the UI thread.
content::NotificationRegistrar registrar_;
};
} // namespace browser_sync
#endif // CHROME_BROWSER_SYNC_GLUE_ANDROID_INVALIDATOR_BRIDGE_H_
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