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1 // Copyright (c) 2011 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/ntp_login_handler.h"
6 
7 #include <string>
8 
9 #include "base/values.h"
10 #include "chrome/browser/prefs/pref_notifier.h"
11 #include "chrome/browser/prefs/pref_service.h"
12 #include "chrome/browser/profiles/profile.h"
13 #include "chrome/browser/sync/profile_sync_service.h"
14 #include "chrome/browser/sync/sync_setup_flow.h"
15 #include "chrome/common/pref_names.h"
16 #include "content/common/notification_details.h"
17 
NTPLoginHandler()18 NTPLoginHandler::NTPLoginHandler() {
19 }
20 
~NTPLoginHandler()21 NTPLoginHandler::~NTPLoginHandler() {
22 }
23 
Attach(WebUI * web_ui)24 WebUIMessageHandler* NTPLoginHandler::Attach(WebUI* web_ui) {
25   PrefService* pref_service = web_ui->GetProfile()->GetPrefs();
26   username_pref_.Init(prefs::kGoogleServicesUsername, pref_service, this);
27 
28   return WebUIMessageHandler::Attach(web_ui);
29 }
30 
RegisterMessages()31 void NTPLoginHandler::RegisterMessages() {
32   web_ui_->RegisterMessageCallback("initializeLogin",
33       NewCallback(this, &NTPLoginHandler::HandleInitializeLogin));
34 }
35 
Observe(NotificationType type,const NotificationSource & source,const NotificationDetails & details)36 void NTPLoginHandler::Observe(NotificationType type,
37                               const NotificationSource& source,
38                               const NotificationDetails& details) {
39   DCHECK(type == NotificationType::PREF_CHANGED);
40   std::string* name = Details<std::string>(details).ptr();
41   if (prefs::kGoogleServicesUsername == *name)
42     UpdateLogin();
43 }
44 
HandleInitializeLogin(const ListValue * args)45 void NTPLoginHandler::HandleInitializeLogin(const ListValue* args) {
46   UpdateLogin();
47 }
48 
UpdateLogin()49 void NTPLoginHandler::UpdateLogin() {
50   std::string username = web_ui_->GetProfile()->GetPrefs()->GetString(
51       prefs::kGoogleServicesUsername);
52   StringValue string_value(username);
53   web_ui_->CallJavascriptFunction("updateLogin", string_value);
54 }
55