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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_INTERNAL_API_JS_MUTATION_EVENT_OBSERVER_H_
#define SYNC_INTERNAL_API_JS_MUTATION_EVENT_OBSERVER_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/non_thread_safe.h"
#include "sync/base/sync_export.h"
#include "sync/internal_api/public/sync_manager.h"
#include "sync/internal_api/public/util/weak_handle.h"
#include "sync/syncable/transaction_observer.h"
namespace tracked_objects {
class Location;
} // namespace tracked_objects
namespace syncer {
class JsEventDetails;
class JsEventHandler;
// Observes all change- and transaction-related events and routes a
// summarized version to a JsEventHandler.
class SYNC_EXPORT JsMutationEventObserver
: public SyncManager::ChangeObserver,
public syncable::TransactionObserver,
public base::NonThreadSafe {
public:
JsMutationEventObserver();
~JsMutationEventObserver() override;
base::WeakPtr<JsMutationEventObserver> AsWeakPtr();
void InvalidateWeakPtrs();
void SetJsEventHandler(const WeakHandle<JsEventHandler>& event_handler);
// SyncManager::ChangeObserver implementation.
void OnChangesApplied(ModelType model_type,
int64 write_transaction_id,
const ImmutableChangeRecordList& changes) override;
void OnChangesComplete(ModelType model_type) override;
// syncable::TransactionObserver implementation.
void OnTransactionWrite(
const syncable::ImmutableWriteTransactionInfo& write_transaction_info,
ModelTypeSet models_with_changes) override;
private:
WeakHandle<JsEventHandler> event_handler_;
void HandleJsEvent(
const tracked_objects::Location& from_here,
const std::string& name, const JsEventDetails& details);
base::WeakPtrFactory<JsMutationEventObserver> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(JsMutationEventObserver);
};
} // namespace syncer
#endif // SYNC_INTERNAL_API_JS_MUTATION_EVENT_OBSERVER_H_
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