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/internal_api/public/sessions/type_debug_info_observer.h" 19 #include "sync/js/js_controller.h" 20 #include "sync/js/js_event_handler.h" 21 22 class ProfileSyncService; 23 24 // The implementation for the chrome://sync-internals page. 25 class SyncInternalsMessageHandler : public content::WebUIMessageHandler, 26 public syncer::JsEventHandler, 27 public ProfileSyncServiceObserver, 28 public browser_sync::ProtocolEventObserver, 29 public syncer::TypeDebugInfoObserver { 30 public: 31 SyncInternalsMessageHandler(); 32 virtual ~SyncInternalsMessageHandler(); 33 34 virtual void RegisterMessages() OVERRIDE; 35 36 // Sets up observers to receive events and forward them to the UI. 37 void HandleRegisterForEvents(const base::ListValue* args); 38 39 // Sets up observers to receive per-type counters and forward them to the UI. 40 void HandleRegisterForPerTypeCounters(const base::ListValue* args); 41 42 // Fires an event to send updated info back to the page. 43 void HandleRequestUpdatedAboutInfo(const base::ListValue* args); 44 45 // Fires and event to send the list of types back to the page. 46 void HandleRequestListOfTypes(const base::ListValue* args); 47 48 // Handler for getAllNodes message. Needs a |request_id| argument. 49 void HandleGetAllNodes(const base::ListValue* args); 50 51 // syncer::JsEventHandler implementation. 52 virtual void HandleJsEvent( 53 const std::string& name, 54 const syncer::JsEventDetails& details) OVERRIDE; 55 56 // Callback used in GetAllNodes. 57 void OnReceivedAllNodes(int request_id, scoped_ptr<base::ListValue> nodes); 58 59 // ProfileSyncServiceObserver implementation. 60 virtual void OnStateChanged() OVERRIDE; 61 62 // ProtocolEventObserver implementation. 63 virtual void OnProtocolEvent(const syncer::ProtocolEvent& e) OVERRIDE; 64 65 // TypeDebugInfoObserver implementation. 66 virtual void OnCommitCountersUpdated( 67 syncer::ModelType type, 68 const syncer::CommitCounters& counters) OVERRIDE; 69 virtual void OnUpdateCountersUpdated( 70 syncer::ModelType type, 71 const syncer::UpdateCounters& counters) OVERRIDE; 72 virtual void OnStatusCountersUpdated( 73 syncer::ModelType type, 74 const syncer::StatusCounters& counters) OVERRIDE; 75 76 // Helper to emit counter updates. 77 // 78 // Used in implementation of On*CounterUpdated methods. Emits the given 79 // dictionary value with additional data to specify the model type and 80 // counter type. 81 void EmitCounterUpdate(syncer::ModelType type, 82 const std::string& counter_type, 83 scoped_ptr<base::DictionaryValue> value); 84 85 private: 86 // Fetches updated aboutInfo and sends it to the page in the form of an 87 // onAboutInfoUpdated event. 88 void SendAboutInfo(); 89 90 ProfileSyncService* GetProfileSyncService(); 91 92 base::WeakPtr<syncer::JsController> js_controller_; 93 94 // A flag used to prevent double-registration with ProfileSyncService. 95 bool is_registered_; 96 97 // A flag used to prevent double-registration as TypeDebugInfoObserver with 98 // ProfileSyncService. 99 bool is_registered_for_counters_; 100 101 base::WeakPtrFactory<SyncInternalsMessageHandler> weak_ptr_factory_; 102 103 DISALLOW_COPY_AND_ASSIGN(SyncInternalsMessageHandler); 104 }; 105 106 #endif // CHROME_BROWSER_UI_WEBUI_SYNC_INTERNALS_MESSAGE_HANDLER_H_ 107