sync/js/js_backend.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef SYNC_JS_JS_BACKEND_H_
   6 #define SYNC_JS_JS_BACKEND_H_
   7
   8 // See README.js for design comments.
   9
  10 #include <string>
  11
  12 #include "sync/base/sync_export.h"
  13
  14 namespace syncer {
  15
  16 class JsEventHandler;
  17 template <typename T> class WeakHandle;
  18
  19 // Interface representing the backend of chrome://sync-internals.  A
  20 // JsBackend can handle messages and can emit events to a
  21 // JsEventHandler.
  22 class SYNC_EXPORT_PRIVATE JsBackend {
  23  public:
  24   // Starts emitting events to the given handler, if initialized.
  25   virtual void SetJsEventHandler(
  26       const WeakHandle<JsEventHandler>& event_handler) = 0;
  27
  28  protected:
  29   virtual ~JsBackend() {}
  30 };
  31
  32 }  // namespace syncer
  33
  34 #endif  // SYNC_JS_JS_BACKEND_H_