Add the ability to show a demo app on OOBE if a machine is derelict.

chrome/browser/ui/webui/chromeos/login/network_screen_handler.h

 // Copyright (c) 2012 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_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
+#include "base/time/time.h"
 #include "chrome/browser/chromeos/login/screens/network_screen_actor.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "ui/gfx/point.h"
 
+class PrefRegistrySimple;
+class PrefService;

[Lei Zhang, 2014/02/11 22:13:59]

nit: not needed

[rkc, 2014/02/11 22:37:38]

Done.

+
 namespace chromeos {
 
 class CoreOobeActor;
+class IdleDetector;
 
 struct NetworkScreenHandlerOnLanguageChangedCallbackData;
 
 // WebUI implementation of NetworkScreenActor. It is used to interact with
 // the welcome screen (part of the page) of the OOBE.
 class NetworkScreenHandler : public NetworkScreenActor,
                              public BaseScreenHandler {
  public:
   explicit NetworkScreenHandler(CoreOobeActor* core_oobe_actor);
   virtual ~NetworkScreenHandler();
@@ skipping 10 matching lines @@
   virtual void EnableContinue(bool enabled) OVERRIDE;
 
   // BaseScreenHandler implementation:
   virtual void DeclareLocalizedValues(LocalizedValuesBuilder* builder) OVERRIDE;
   virtual void GetAdditionalParameters(base::DictionaryValue* dict) OVERRIDE;
   virtual void Initialize() OVERRIDE;
 
   // WebUIMessageHandler implementation:
   virtual void RegisterMessages() OVERRIDE;
 
+  // Registers the preference for derelict state.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
  private:
   // Handles moving off the screen.
   void HandleOnExit();
 
   // Handles change of the language.
   void HandleOnLanguageChanged(const std::string& locale);
 
   // Async callback after ReloadResourceBundle(locale) completed.
   static void OnLanguageChangedCallback(
       scoped_ptr<NetworkScreenHandlerOnLanguageChangedCallbackData> context,
       const std::string& requested_locale,
       const std::string& loaded_locale,
       const bool success);
 
   // Handles change of the input method.
   void HandleOnInputMethodChanged(const std::string& id);
 
   // Handles change of the time zone
   void HandleOnTimezoneChanged(const std::string& timezone);
 
   // Callback when the system timezone settings is changed.
   void OnSystemTimezoneChanged();
 
+  // Idle detection related methods.
+  void StartIdleDetection();
+  void OnIdle();
+  void SetupTimeouts();
+
   // Returns available languages. Caller gets the ownership. Note, it does
   // depend on the current locale.
   static base::ListValue* GetLanguageList();
 
   // Returns available input methods. Caller gets the ownership. Note, it does
   // depend on the current locale.
   static base::ListValue* GetInputMethods();
 
   // Returns available timezones. Caller gets the ownership.
   static base::ListValue* GetTimezoneList();
 
   NetworkScreenActor::Delegate* screen_;
   CoreOobeActor* core_oobe_actor_;
 
   bool is_continue_enabled_;
 
+  // Flag set if we believe this is an abandoned machine.
+  bool is_derelict_;
+
   // Keeps whether screen should be shown right after initialization.
   bool show_on_init_;
 
   // Position of the network control.
   gfx::Point network_control_pos_;
 
   scoped_ptr<CrosSettings::ObserverSubscription> timezone_subscription_;
 
+  scoped_ptr<IdleDetector> detector_;
+
+  // Timeout to detect if the machine is in a derelict state.
+  base::TimeDelta derelict_detection_timeout_;
+  // Timeout before showing our demo up if the machine is in a derelict state.
+  base::TimeDelta derelict_idle_timeout_;
+
   base::WeakPtrFactory<NetworkScreenHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkScreenHandler);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_NETWORK_SCREEN_HANDLER_H_