chrome/browser/ui/webui/sync_internals_message_handler.h

   1 // Copyright 2014 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 CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "base/scoped_observer.h"
  14 #include "base/values.h"
  15 #include "chrome/browser/sync/profile_sync_service_observer.h"
  16 #include "chrome/browser/sync/protocol_event_observer.h"
  17 #include "content/public/browser/web_ui_message_handler.h"
  18 #include "sync/js/js_controller.h"
  19 #include "sync/js/js_event_handler.h"
  20
  21 class ProfileSyncService;
  22
  23 // The implementation for the chrome://sync-internals page.
  24 class SyncInternalsMessageHandler
  25     : public content::WebUIMessageHandler,
  26       public syncer::JsEventHandler,
  27       public ProfileSyncServiceObserver,
  28       public browser_sync::ProtocolEventObserver {
  29  public:
  30   SyncInternalsMessageHandler();
  31   virtual ~SyncInternalsMessageHandler();
  32
  33   virtual void RegisterMessages() OVERRIDE;
  34
  35   // Sets up observers to receive events and forward them to the UI.
  36   void HandleRegisterForEvents(const base::ListValue* args);
  37
  38   // Fires an event to send updated info back to the page.
  39   void HandleRequestUpdatedAboutInfo(const base::ListValue* args);
  40
  41   // Fires and event to send the list of types back to the page.
  42   void HandleRequestListOfTypes(const base::ListValue* args);
  43
  44   // Handler for getAllNodes message.  Needs a |request_id| argument.
  45   void HandleGetAllNodes(const base::ListValue* args);
  46
  47   // syncer::JsEventHandler implementation.
  48   virtual void HandleJsEvent(
  49       const std::string& name,
  50       const syncer::JsEventDetails& details) OVERRIDE;
  51
  52   // Callback used in GetAllNodes.
  53   void OnReceivedAllNodes(int request_id, scoped_ptr<base::ListValue> nodes);
  54
  55   // ProfileSyncServiceObserver implementation.
  56   virtual void OnStateChanged() OVERRIDE;
  57
  58   // ProtocolEventObserver implementation.
  59   virtual void OnProtocolEvent(const syncer::ProtocolEvent& e) OVERRIDE;
  60
  61  private:
  62   // Fetches updated aboutInfo and sends it to the page in the form of an
  63   // onAboutInfoUpdated event.
  64   void SendAboutInfo();
  65
  66   ProfileSyncService* GetProfileSyncService();
  67
  68   base::WeakPtr<syncer::JsController> js_controller_;
  69
  70   // A flag used to prevent double-registration with ProfileSyncService.
  71   bool is_registered_;
  72
  73   base::WeakPtrFactory<SyncInternalsMessageHandler> weak_ptr_factory_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(SyncInternalsMessageHandler);
  76 };
  77
  78 #endif  // CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_