chrome/browser/ui/webui/ntp/android/navigation_handler.h

   1 // Copyright 2013 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_NTP_ANDROID_NAVIGATION_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_NTP_ANDROID_NAVIGATION_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "content/public/browser/navigation_entry.h"
  10 #include "content/public/browser/web_ui_message_handler.h"
  11
  12 namespace base {
  13 class ListValue;
  14 }
  15
  16 // Records a UMA stat ("NewTabPage.ActionAndroid") for the action the user takes
  17 // to navigate away from the NTP.
  18 class NavigationHandler : public content::WebUIMessageHandler {
  19  public:
  20   NavigationHandler();
  21   virtual ~NavigationHandler();
  22
  23   // WebUIMessageHandler implementation.
  24   virtual void RegisterMessages() OVERRIDE;
  25
  26   // Callback for "openedMostVisited".
  27   void HandleOpenedMostVisited(const base::ListValue* args);
  28
  29   // Callback for "openedRecentlyClosed".
  30   void HandleOpenedRecentlyClosed(const base::ListValue* args);
  31
  32   // Callback for "openedBookmark".
  33   void HandleOpenedBookmark(const base::ListValue* args);
  34
  35   // Callback for "openedForeignSession".
  36   void HandleOpenedForeignSession(const base::ListValue* args);
  37
  38   static void RecordActionForNavigation(const content::NavigationEntry& entry);
  39
  40  private:
  41   // Possible actions taken by the user on the NTP. This enum is also defined in
  42   // histograms.xml. WARNING: these values must stay in sync with histograms.xml
  43   // and new actions can be added only at the end of the enum.
  44   enum Action {
  45     // User performed a search using the omnibox
  46     ACTION_SEARCHED_USING_OMNIBOX = 0,
  47     // User navigated to Google search homepage using the omnibox
  48     ACTION_NAVIGATED_TO_GOOGLE_HOMEPAGE = 1,
  49     // User navigated to any other page using the omnibox
  50     ACTION_NAVIGATED_USING_OMNIBOX = 2,
  51     // User opened a most visited page
  52     ACTION_OPENED_MOST_VISITED_ENTRY = 3,
  53     // User opened a recently closed tab
  54     ACTION_OPENED_RECENTLY_CLOSED_ENTRY = 4,
  55     // User opened a bookmark
  56     ACTION_OPENED_BOOKMARK = 5,
  57     // User opened a foreign session (from other devices section)
  58     ACTION_OPENED_FOREIGN_SESSION = 6,
  59     // The number of possible actions
  60     NUM_ACTIONS = 7
  61   };
  62
  63   static void RecordAction(Action action);
  64
  65   DISALLOW_COPY_AND_ASSIGN(NavigationHandler);
  66 };
  67
  68 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_ANDROID_NAVIGATION_HANDLER_H_