chrome/browser/ui/webui/sync_internals_message_handler.cc

   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 #include "chrome/browser/ui/webui/sync_internals_message_handler.h"
   6
   7 #include <vector>
   8
   9 #include "base/logging.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/browser/sync/about_sync_util.h"
  12 #include "chrome/browser/sync/profile_sync_service.h"
  13 #include "chrome/browser/sync/profile_sync_service_factory.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "content/public/browser/web_ui.h"
  16 #include "sync/internal_api/public/events/protocol_event.h"
  17 #include "sync/internal_api/public/util/weak_handle.h"
  18 #include "sync/js/js_event_details.h"
  19
  20 using syncer::JsEventDetails;
  21 using syncer::ModelTypeSet;
  22 using syncer::WeakHandle;
  23
  24 SyncInternalsMessageHandler::SyncInternalsMessageHandler()
  25     : is_registered_(false),
  26       weak_ptr_factory_(this) {}
  27
  28 SyncInternalsMessageHandler::~SyncInternalsMessageHandler() {
  29   if (js_controller_)
  30     js_controller_->RemoveJsEventHandler(this);
  31
  32   ProfileSyncService* service = GetProfileSyncService();
  33   if (service && service->HasObserver(this)) {
  34     service->RemoveObserver(this);
  35     service->RemoveProtocolEventObserver(this);
  36   }
  37 }
  38
  39 void SyncInternalsMessageHandler::RegisterMessages() {
  40   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
  41
  42   web_ui()->RegisterMessageCallback(
  43       "registerForEvents",
  44       base::Bind(&SyncInternalsMessageHandler::HandleRegisterForEvents,
  45                  base::Unretained(this)));
  46
  47   web_ui()->RegisterMessageCallback(
  48       "requestUpdatedAboutInfo",
  49       base::Bind(&SyncInternalsMessageHandler::HandleRequestUpdatedAboutInfo,
  50                  base::Unretained(this)));
  51
  52   web_ui()->RegisterMessageCallback(
  53       "requestListOfTypes",
  54       base::Bind(&SyncInternalsMessageHandler::HandleRequestListOfTypes,
  55                  base::Unretained(this)));
  56
  57   web_ui()->RegisterMessageCallback(
  58       "getAllNodes",
  59       base::Bind(&SyncInternalsMessageHandler::HandleGetAllNodes,
  60                  base::Unretained(this)));
  61 }
  62
  63 void SyncInternalsMessageHandler::HandleRegisterForEvents(
  64     const base::ListValue* args) {
  65   DCHECK(args->empty());
  66
  67   // is_registered_ flag protects us from double-registering.  This could
  68   // happen on a page refresh, where the JavaScript gets re-run but the
  69   // message handler remains unchanged.
  70   ProfileSyncService* service = GetProfileSyncService();
  71   if (service && !is_registered_) {
  72     service->AddObserver(this);
  73     service->AddProtocolEventObserver(this);
  74     js_controller_ = service->GetJsController();
  75     js_controller_->AddJsEventHandler(this);
  76     is_registered_ = true;
  77   }
  78 }
  79
  80 void SyncInternalsMessageHandler::HandleRequestUpdatedAboutInfo(
  81     const base::ListValue* args) {
  82   DCHECK(args->empty());
  83   SendAboutInfo();
  84 }
  85
  86 void SyncInternalsMessageHandler::HandleRequestListOfTypes(
  87     const base::ListValue* args) {
  88   DCHECK(args->empty());
  89   base::DictionaryValue event_details;
  90   scoped_ptr<base::ListValue> type_list(new base::ListValue());
  91   ModelTypeSet protocol_types = syncer::ProtocolTypes();
  92   for (ModelTypeSet::Iterator it = protocol_types.First();
  93        it.Good(); it.Inc()) {
  94     type_list->Append(new base::StringValue(ModelTypeToString(it.Get())));
  95   }
  96   event_details.Set("types", type_list.release());
  97   web_ui()->CallJavascriptFunction(
  98       "chrome.sync.dispatchEvent",
  99       base::StringValue("onReceivedListOfTypes"),
 100       event_details);
 101 }
 102
 103 void SyncInternalsMessageHandler::HandleGetAllNodes(
 104     const base::ListValue* args) {
 105   DCHECK_EQ(1U, args->GetSize());
 106   int request_id = 0;
 107   bool success = args->GetInteger(0, &request_id);
 108   DCHECK(success);
 109
 110   ProfileSyncService* service = GetProfileSyncService();
 111   if (service) {
 112     service->GetAllNodes(
 113         base::Bind(&SyncInternalsMessageHandler::OnReceivedAllNodes,
 114                    weak_ptr_factory_.GetWeakPtr(), request_id));
 115   }
 116 }
 117
 118 void SyncInternalsMessageHandler::OnReceivedAllNodes(
 119     int request_id,
 120     scoped_ptr<base::ListValue> nodes) {
 121   base::FundamentalValue id(request_id);
 122   web_ui()->CallJavascriptFunction("chrome.sync.getAllNodesCallback",
 123                                    id, *nodes);
 124 }
 125
 126 void SyncInternalsMessageHandler::OnStateChanged() {
 127   SendAboutInfo();
 128 }
 129
 130 void SyncInternalsMessageHandler::OnProtocolEvent(
 131     const syncer::ProtocolEvent& event) {
 132   scoped_ptr<base::DictionaryValue> value(
 133       syncer::ProtocolEvent::ToValue(event));
 134   web_ui()->CallJavascriptFunction(
 135       "chrome.sync.dispatchEvent",
 136       base::StringValue("onProtocolEvent"),
 137       *value);
 138 }
 139
 140 void SyncInternalsMessageHandler::HandleJsEvent(
 141     const std::string& name,
 142     const JsEventDetails& details) {
 143   DVLOG(1) << "Handling event: " << name
 144            << " with details " << details.ToString();
 145   web_ui()->CallJavascriptFunction("chrome.sync.dispatchEvent",
 146                                    base::StringValue(name),
 147                                    details.Get());
 148 }
 149
 150 void SyncInternalsMessageHandler::SendAboutInfo() {
 151   scoped_ptr<base::DictionaryValue> value =
 152       sync_ui_util::ConstructAboutInformation(GetProfileSyncService());
 153   web_ui()->CallJavascriptFunction(
 154       "chrome.sync.dispatchEvent",
 155       base::StringValue("onAboutInfoUpdated"),
 156       *value);
 157 }
 158
 159 // Gets the ProfileSyncService of the underlying original profile.
 160 // May return NULL (e.g., if sync is disabled on the command line).
 161 ProfileSyncService* SyncInternalsMessageHandler::GetProfileSyncService() {
 162   Profile* profile = Profile::FromWebUI(web_ui());
 163   ProfileSyncServiceFactory* factory = ProfileSyncServiceFactory::GetInstance();
 164   return factory->GetForProfile(profile->GetOriginalProfile());
 165 }
 166