ntp4 info bubble

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_
 
 #include "base/values.h"
 #include "content/browser/webui/web_ui.h"
 
 class PrefService;
 class Profile;
 
 // Handler for general New Tab Page functionality that does not belong in a
 // more specialized handler.
 class NewTabPageHandler : public WebUIMessageHandler {
  public:
   NewTabPageHandler() {}
   virtual ~NewTabPageHandler() {}
 
   // WebUIMessageHandler implementation.
   virtual void RegisterMessages() OVERRIDE;
 
   // Callback for "closePromo".
   void HandleClosePromo(const ListValue* args);
 
   // Callback for "pageSelected".
   void HandlePageSelected(const ListValue* args);
 
+  // Callback for "navigationDotUsed". This is called when a navigation dot is
+  // clicked, whereas pageSelected might be called after any page-switching user
+  // action.
+  void HandleNavDotUsed(const ListValue* args);
+
+  // Callback for "handleIntroMessageSeen". No arguments. Called when the intro
+  // message is displayed.
+  void HandleIntroMessageSeen(const ListValue* args);
+
   // Register NTP preferences.
   static void RegisterUserPrefs(PrefService* prefs);
 
   // Registers values (strings etc.) for the page.
   static void GetLocalizedValues(Profile* profile, DictionaryValue* values);
 
  private:
   // The purpose of this enum is to track which page on the NTP is showing.
   // The lower 10 bits of kNTPShownPage are used for the index within the page
   // group, and the rest of the bits are used for the page group ID (defined
   // here).
   enum {
     INDEX_MASK = (1 << 10) - 1,
     MOST_VISITED_PAGE_ID = 1 << 10,
     APPS_PAGE_ID = 2 << 10,
     BOOKMARKS_PAGE_ID = 3 << 10,
   };
 
   DISALLOW_COPY_AND_ASSIGN(NewTabPageHandler);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_NEW_TAB_PAGE_HANDLER_H_