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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_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_H_
      7 
      8 #include <string>
      9 
     10 #include "base/callback.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/values.h"
     13 #include "chrome/browser/chromeos/customization_document.h"
     14 #include "chrome/browser/chromeos/login/login_display.h"
     15 #include "ui/gfx/native_widget_types.h"
     16 
     17 namespace views {
     18 class Widget;
     19 }  // namespace views
     20 
     21 namespace chromeos {
     22 
     23 class AppLaunchController;
     24 class LoginScreenContext;
     25 class WebUILoginView;
     26 class WizardController;
     27 
     28 // An interface that defines OOBE/login screen host.
     29 // Host encapsulates WebUI window OOBE/login controllers,
     30 // UI implementation (such as LoginDisplay).
     31 class LoginDisplayHost {
     32  public:
     33   // Callback for GetAutoEnrollmentCheckResult. It is invoked with when
     34   // a decision is made for auto enrollment. It is invoked with "true" when
     35   // auto enrollment check is finished and auto enrollment should be enforced.
     36   // Otherwise, it is invoked with "false".
     37   typedef base::Callback<void(bool)> GetAutoEnrollmentCheckResultCallback;
     38 
     39   virtual ~LoginDisplayHost() {}
     40 
     41   // Creates UI implementation specific login display instance (views/WebUI).
     42   // The caller takes ownership of the returned value.
     43   virtual LoginDisplay* CreateLoginDisplay(
     44       LoginDisplay::Delegate* delegate) = 0;
     45 
     46   // Returns corresponding native window.
     47   virtual gfx::NativeWindow GetNativeWindow() const = 0;
     48 
     49   // Returns the current login view.
     50   virtual WebUILoginView* GetWebUILoginView() const = 0;
     51 
     52   // Called when browsing session starts before creating initial browser.
     53   virtual void BeforeSessionStart() = 0;
     54 
     55   // Called when user enters or returns to browsing session so
     56   // LoginDisplayHost instance may delete itself.
     57   virtual void Finalize() = 0;
     58 
     59   // Called when a login has completed successfully.
     60   virtual void OnCompleteLogin() = 0;
     61 
     62   // Open proxy settings dialog.
     63   virtual void OpenProxySettings() = 0;
     64 
     65   // Toggles status area visibility.
     66   virtual void SetStatusAreaVisible(bool visible) = 0;
     67 
     68   // Signals the LoginDisplayHost that it can proceed with the Enterprise
     69   // Auto-Enrollment checks now.
     70   virtual void CheckForAutoEnrollment() = 0;
     71 
     72   // Gets the auto enrollment check results. If the check is still pending,
     73   // |callback| will be invoked asynchronously after it is finished. Otherwise,
     74   // |callback| is invoked synchronously before this call returns.
     75   virtual void GetAutoEnrollmentCheckResult(
     76       const GetAutoEnrollmentCheckResultCallback& callback) = 0;
     77 
     78   // Starts out-of-box-experience flow or shows other screen handled by
     79   // Wizard controller i.e. camera, recovery.
     80   // One could specify start screen with |first_screen_name|.
     81   // Takes ownership of |screen_parameters|, which can also be NULL.
     82   virtual void StartWizard(
     83       const std::string& first_screen_name,
     84       scoped_ptr<DictionaryValue> screen_parameters) = 0;
     85 
     86   // Returns current WizardController, if it exists.
     87   // Result should not be stored.
     88   virtual WizardController* GetWizardController() = 0;
     89 
     90   // Returns current AppLaunchController, if it exists.
     91   // Result should not be stored.
     92   virtual AppLaunchController* GetAppLaunchController() = 0;
     93 
     94   // Starts screen for adding user into session.
     95   // |completion_callback| called before display host shutdown.
     96   // |completion_callback| can be null.
     97   virtual void StartUserAdding(const base::Closure& completion_callback) = 0;
     98 
     99   // Starts sign in screen.
    100   virtual void StartSignInScreen(const LoginScreenContext& context) = 0;
    101 
    102   // Resumes a previously started sign in screen.
    103   virtual void ResumeSignInScreen() = 0;
    104 
    105   // Invoked when system preferences that affect the signin screen have changed.
    106   virtual void OnPreferencesChanged() = 0;
    107 
    108   // Initiates authentication network prewarming.
    109   virtual void PrewarmAuthentication() = 0;
    110 
    111   // Starts app launch splash screen.
    112   virtual void StartAppLaunch(const std::string& app_id) = 0;
    113 };
    114 
    115 }  // namespace chromeos
    116 
    117 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOGIN_DISPLAY_HOST_H_
    118