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// Copyright (c) 2010 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.
//
// This class is the (hackish) way to use the XMPP parts of
// MediatorThread for server-issued notifications.
//
// TODO(akalin): Decomp MediatorThread into an XMPP service part and a
// notifications-specific part and use the XMPP service part for
// server-issued notifications.
#ifndef CHROME_BROWSER_SYNC_NOTIFIER_SERVER_NOTIFIER_THREAD_H_
#define CHROME_BROWSER_SYNC_NOTIFIER_SERVER_NOTIFIER_THREAD_H_
#pragma once
#include <string>
#include <vector>
#include "base/observer_list_threadsafe.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/sync/notifier/chrome_invalidation_client.h"
#include "chrome/browser/sync/notifier/state_writer.h"
#include "chrome/browser/sync/syncable/model_type.h"
#include "jingle/notifier/listener/mediator_thread_impl.h"
namespace notifier {
struct NotifierOptions;
}
namespace sync_notifier {
class ServerNotifierThread
: public notifier::MediatorThreadImpl,
public ChromeInvalidationClient::Listener,
public StateWriter {
public:
// Does not take ownership of |state_writer| (which may not
// be NULL).
explicit ServerNotifierThread(
const notifier::NotifierOptions& notifier_options,
const std::string& state, StateWriter* state_writer);
virtual ~ServerNotifierThread();
// Overridden to start listening to server notifications.
virtual void ListenForUpdates();
// Overridden to immediately notify the delegate that subscriptions
// (i.e., notifications) are on. Must be called only after a call
// to ListenForUpdates().
virtual void SubscribeForUpdates(
const std::vector<std::string>& subscribed_services_list);
// Overridden to stop listening to server notifications.
virtual void Logout();
// Must not be called.
virtual void SendNotification(const OutgoingNotificationData& data);
// ChromeInvalidationClient::Listener implementation.
// We pass on two pieces of information to observers through the
// IncomingNotificationData.
// - the model type being invalidated, through IncomingNotificationData's
// service_url.
// - the invalidation payload for that model type, through
// IncomingNotificationData's service_specific_data.
virtual void OnInvalidate(syncable::ModelType model_type,
const std::string& payload);
virtual void OnInvalidateAll();
// StateWriter implementation.
virtual void WriteState(const std::string& state);
private:
// Posted to the worker thread by ListenForUpdates().
void DoListenForUpdates();
// Posted to the worker thread by SubscribeForUpdates().
void RegisterTypesAndSignalSubscribed();
// Posted to the worker thread by Logout().
void StopInvalidationListener();
std::string state_;
// Hack to get the nice thread-safe behavior for |state_writer_|.
scoped_refptr<ObserverListThreadSafe<StateWriter> > state_writers_;
// We still need to keep |state_writer_| around to remove it from
// |state_writers_|.
StateWriter* state_writer_;
scoped_ptr<ChromeInvalidationClient> chrome_invalidation_client_;
};
} // namespace sync_notifier
DISABLE_RUNNABLE_METHOD_REFCOUNT(sync_notifier::ServerNotifierThread);
#endif // CHROME_BROWSER_SYNC_NOTIFIER_SERVER_NOTIFIER_THREAD_H_
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