ntp4 info bubble

chrome/browser/ui/webui/ntp/new_tab_page_handler.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/webui/ntp/new_tab_page_handler.h"
 
 #include "chrome/common/pref_names.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/common/notification_service.h"
+#include "grit/chromium_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+static const int kIntroDisplayMax = 10;
 
 void NewTabPageHandler::RegisterMessages() {
   web_ui_->RegisterMessageCallback("closePromo", NewCallback(
       this, &NewTabPageHandler::HandleClosePromo));
   web_ui_->RegisterMessageCallback("pageSelected", NewCallback(
       this, &NewTabPageHandler::HandlePageSelected));
+  web_ui_->RegisterMessageCallback("navigationDotUsed", NewCallback(
+      this, &NewTabPageHandler::HandleNavDotUsed));
+  web_ui_->RegisterMessageCallback("introMessageSeen", NewCallback(
+      this, &NewTabPageHandler::HandleIntroMessageSeen));
 }
 
 void NewTabPageHandler::HandleClosePromo(const ListValue* args) {
   web_ui_->GetProfile()->GetPrefs()->SetBoolean(prefs::kNTPPromoClosed, true);
   NotificationService* service = NotificationService::current();
   service->Notify(chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED,
                   Source<NewTabPageHandler>(this),
                   NotificationService::NoDetails());
 }
 
 void NewTabPageHandler::HandlePageSelected(const ListValue* args) {
   double page_id_double;
   CHECK(args->GetDouble(0, &page_id_double));
   int page_id = static_cast<int>(page_id_double);
 
   double index_double;
   CHECK(args->GetDouble(1, &index_double));
   int index = static_cast<int>(index_double);
 
   PrefService* prefs = web_ui_->GetProfile()->GetPrefs();
   prefs->SetInteger(prefs::kNTPShownPage, page_id | index);
 }
 
+void NewTabPageHandler::HandleNavDotUsed(const ListValue* args) {
+  PrefService* prefs = web_ui_->GetProfile()->GetPrefs();
+  prefs->SetInteger(prefs::kNTP4IntroDisplayCount, kIntroDisplayMax + 1);
+}
+
+void NewTabPageHandler::HandleIntroMessageSeen(const ListValue* args) {
+  PrefService* prefs = web_ui_->GetProfile()->GetPrefs();
+  int intro_displays = prefs->GetInteger(prefs::kNTP4IntroDisplayCount);
+  prefs->SetInteger(prefs::kNTP4IntroDisplayCount, intro_displays + 1);
+}
+
 // static
 void NewTabPageHandler::RegisterUserPrefs(PrefService* prefs) {
   // TODO(estade): should be syncable.
   prefs->RegisterIntegerPref(prefs::kNTPShownPage, APPS_PAGE_ID,
                              PrefService::UNSYNCABLE_PREF);
+  prefs->RegisterIntegerPref(prefs::kNTP4IntroDisplayCount, 0,
+                             PrefService::UNSYNCABLE_PREF);
 }
 
 // static
 void NewTabPageHandler::GetLocalizedValues(Profile* profile,
                                            DictionaryValue* values) {
   if (!NewTabUI::Ntp4Enabled())
     return;
 
   values->SetInteger("most_visited_page_id", MOST_VISITED_PAGE_ID);
   values->SetInteger("apps_page_id", APPS_PAGE_ID);
   values->SetInteger("bookmarks_page_id", BOOKMARKS_PAGE_ID);
 
   PrefService* prefs = profile->GetPrefs();
   int shown_page = prefs->GetInteger(prefs::kNTPShownPage);
   values->SetInteger("shown_page_type", shown_page & ~INDEX_MASK);
   values->SetInteger("shown_page_index", shown_page & INDEX_MASK);
+
+  int intro_displays = prefs->GetInteger(prefs::kNTP4IntroDisplayCount);
+  if (intro_displays <= kIntroDisplayMax) {
+    values->SetString("ntp4_intro_message",
+                      l10n_util::GetStringUTF16(IDS_NTP4_INTRO_MESSAGE));
+  }
 }