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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_JS_JS_BACKEND_H_
#define SYNC_JS_JS_BACKEND_H_
// See README.js for design comments.
#include <string>
#include "sync/base/sync_export.h"
namespace syncer {
class JsArgList;
class JsEventHandler;
class JsReplyHandler;
template <typename T> class WeakHandle;
// Interface representing the backend of chrome://sync-internals. A
// JsBackend can handle messages and can emit events to a
// JsEventHandler.
class SYNC_EXPORT_PRIVATE JsBackend {
public:
// Starts emitting events to the given handler, if initialized.
virtual void SetJsEventHandler(
const WeakHandle<JsEventHandler>& event_handler) = 0;
// Processes the given message and replies via the given handler, if
// initialized.
virtual void ProcessJsMessage(
const std::string& name, const JsArgList& args,
const WeakHandle<JsReplyHandler>& reply_handler) = 0;
protected:
virtual ~JsBackend() {}
};
} // namespace syncer
#endif // SYNC_JS_JS_BACKEND_H_
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