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      1 // Copyright (c) 2012 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_CHROMEOS_LOGIN_CORE_OOBE_HANDLER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_CORE_OOBE_HANDLER_H_
      7 
      8 #include <string>
      9 
     10 #include "chrome/browser/chromeos/login/screens/core_oobe_actor.h"
     11 #include "chrome/browser/chromeos/login/version_info_updater.h"
     12 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
     13 #include "content/public/browser/notification_observer.h"
     14 #include "content/public/browser/notification_registrar.h"
     15 
     16 namespace base {
     17 class ListValue;
     18 }
     19 
     20 namespace chromeos {
     21 
     22 class OobeUI;
     23 
     24 // The core handler for Javascript messages related to the "oobe" view.
     25 class CoreOobeHandler : public BaseScreenHandler,
     26                         public VersionInfoUpdater::Delegate,
     27                         public content::NotificationObserver,
     28                         public CoreOobeActor {
     29  public:
     30   class Delegate {
     31    public:
     32     // Called when current screen is changed.
     33     virtual void OnCurrentScreenChanged(const std::string& screen) = 0;
     34   };
     35 
     36   explicit CoreOobeHandler(OobeUI* oobe_ui);
     37   virtual ~CoreOobeHandler();
     38 
     39   void SetDelegate(Delegate* delegate);
     40 
     41   // BaseScreenHandler implementation:
     42   virtual void DeclareLocalizedValues(LocalizedValuesBuilder* builder) OVERRIDE;
     43   virtual void Initialize() OVERRIDE;
     44 
     45   // WebUIMessageHandler implementation.
     46   virtual void RegisterMessages() OVERRIDE;
     47 
     48   // VersionInfoUpdater::Delegate implementation:
     49   virtual void OnOSVersionLabelTextUpdated(
     50       const std::string& os_version_label_text) OVERRIDE;
     51   virtual void OnEnterpriseInfoUpdated(
     52       const std::string& message_text) OVERRIDE;
     53 
     54   // Show or hide OOBE UI.
     55   void ShowOobeUI(bool show);
     56 
     57   bool show_oobe_ui() const {
     58     return show_oobe_ui_;
     59   }
     60 
     61  private:
     62   // CoreOobeActor implementation:
     63   virtual void ShowSignInError(
     64       int login_attempts,
     65       const std::string& error_text,
     66       const std::string& help_link_text,
     67       HelpAppLauncher::HelpTopic help_topic_id) OVERRIDE;
     68   virtual void ShowTpmError() OVERRIDE;
     69   virtual void ShowSignInUI(const std::string& email) OVERRIDE;
     70   virtual void ResetSignInUI(bool force_online) OVERRIDE;
     71   virtual void ClearUserPodPassword() OVERRIDE;
     72   virtual void RefocusCurrentPod() OVERRIDE;
     73   virtual void OnLoginSuccess(const std::string& username) OVERRIDE;
     74   virtual void ShowPasswordChangedScreen(bool show_password_error) OVERRIDE;
     75   virtual void SetUsageStats(bool checked) OVERRIDE;
     76   virtual void SetOemEulaUrl(const std::string& oem_eula_url) OVERRIDE;
     77   virtual void SetTpmPassword(const std::string& tmp_password) OVERRIDE;
     78   virtual void ClearErrors() OVERRIDE;
     79   virtual void ReloadContent(const base::DictionaryValue& dictionary) OVERRIDE;
     80 
     81   // Handlers for JS WebUI messages.
     82   void HandleEnableLargeCursor(bool enabled);
     83   void HandleEnableHighContrast(bool enabled);
     84   void HandleEnableScreenMagnifier(bool enabled);
     85   void HandleEnableSpokenFeedback();
     86   void HandleInitialized();
     87   void HandleSkipUpdateEnrollAfterEula();
     88   void HandleUpdateCurrentScreen(const std::string& screen);
     89   void HandleSetDeviceRequisition(const std::string& requisition);
     90   void HandleScreenAssetsLoaded(const std::string& screen_async_load_id);
     91   void HandleSkipToLoginForTesting(const base::ListValue* args);
     92 
     93   // Updates a11y menu state based on the current a11y features state(on/off).
     94   void UpdateA11yState();
     95 
     96   // Calls javascript to sync OOBE UI visibility with show_oobe_ui_.
     97   void UpdateOobeUIVisibility();
     98 
     99   // Updates label with specified id with specified text.
    100   void UpdateLabel(const std::string& id, const std::string& text);
    101 
    102   // Updates the device requisition string on the UI side.
    103   void UpdateDeviceRequisition();
    104 
    105   // content::NotificationObserver implementation:
    106   virtual void Observe(int type,
    107                        const content::NotificationSource& source,
    108                        const content::NotificationDetails& details) OVERRIDE;
    109 
    110   // Owner of this handler.
    111   OobeUI* oobe_ui_;
    112 
    113   // True if we should show OOBE instead of login.
    114   bool show_oobe_ui_;
    115 
    116   // Updates when version info is changed.
    117   VersionInfoUpdater version_info_updater_;
    118 
    119   Delegate* delegate_;
    120 
    121   content::NotificationRegistrar registrar_;
    122 
    123   DISALLOW_COPY_AND_ASSIGN(CoreOobeHandler);
    124 };
    125 
    126 }  // namespace chromeos
    127 
    128 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_CORE_OOBE_HANDLER_H_
    129