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      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_CORE_APP_LAUNCHER_HANDLER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_NTP_CORE_APP_LAUNCHER_HANDLER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/compiler_specific.h"
     12 #include "base/values.h"
     13 #include "chrome/common/extensions/extension_constants.h"
     14 #include "content/public/browser/web_ui_message_handler.h"
     15 #include "extensions/common/extension.h"
     16 
     17 namespace extensions {
     18 class Extension;
     19 }
     20 
     21 namespace user_prefs {
     22 class PrefRegistrySyncable;
     23 }
     24 
     25 class Profile;
     26 
     27 class CoreAppLauncherHandler : public content::WebUIMessageHandler {
     28  public:
     29   CoreAppLauncherHandler();
     30   virtual ~CoreAppLauncherHandler();
     31 
     32   // Records the given type of app launch for UMA.
     33   static void RecordAppLaunchType(extension_misc::AppLaunchBucket bucket,
     34                                   extensions::Manifest::Type app_type);
     35 
     36   // Register app launcher preferences.
     37   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
     38 
     39   // Records an app launch from the search view of the app list.
     40   static void RecordAppListSearchLaunch(const extensions::Extension* extension);
     41 
     42   // Records an app launch from the main view of the app list.
     43   static void RecordAppListMainLaunch(const extensions::Extension* extension);
     44 
     45   // Records a web store launch in the appropriate histograms.
     46   static void RecordWebStoreLaunch();
     47 
     48  private:
     49   // Callback for the "recordAppLaunchByUrl" message. Takes an escaped URL and
     50   // a launch source(integer), and if the URL represents an app, records the
     51   // action for UMA.
     52   void HandleRecordAppLaunchByUrl(const base::ListValue* args);
     53 
     54   // Records an app launch in the corresponding |bucket| of the app launch
     55   // histogram if the |escaped_url| corresponds to an installed app.
     56   void RecordAppLaunchByUrl(Profile* profile,
     57                             std::string escaped_url,
     58                             extension_misc::AppLaunchBucket bucket);
     59 
     60   // WebUIMessageHandler implementation.
     61   virtual void RegisterMessages() OVERRIDE;
     62 
     63   DISALLOW_COPY_AND_ASSIGN(CoreAppLauncherHandler);
     64 };
     65 
     66 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_CORE_APP_LAUNCHER_HANDLER_H_
     67