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 JsArgList;
  17 class JsEventHandler;
  18 class JsReplyHandler;
  19 template <typename T> class WeakHandle;
  20
  21 // Interface representing the backend of chrome://sync-internals.  A
  22 // JsBackend can handle messages and can emit events to a
  23 // JsEventHandler.
  24 class SYNC_EXPORT_PRIVATE JsBackend {
  25  public:
  26   // Starts emitting events to the given handler, if initialized.
  27   virtual void SetJsEventHandler(
  28       const WeakHandle<JsEventHandler>& event_handler) = 0;
  29
  30   // Processes the given message and replies via the given handler, if
  31   // initialized.
  32   virtual void ProcessJsMessage(
  33       const std::string& name, const JsArgList& args,
  34       const WeakHandle<JsReplyHandler>& reply_handler) = 0;
  35
  36  protected:
  37   virtual ~JsBackend() {}
  38 };
  39
  40 }  // namespace syncer
  41
  42 #endif  // SYNC_JS_JS_BACKEND_H_