text: // Copyright 2021 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 ASH_IN_SESSION_AUTH_AUTHENTICATION_DIALOG_H_
  #define ASH_IN_SESSION_AUTH_AUTHENTICATION_DIALOG_H_
  
  #include "ash/ash_export.h"
  #include "base/time/time.h"
  #include "ui/views/controls/label.h"
  #include "ui/views/window/dialog_delegate.h"
  
  namespace views {
  class Textfield;
  }
  
  namespace ash {
  
  // To be used for in-session authentication. Currently, only password
  // is supported, however, there are plans to enrich this dialog to eventually
  // support all configured forms of authentication on the system.
  class ASH_EXPORT AuthenticationDialog : public views::DialogDelegateView {
   public:
    enum class Result { kSuccess, kAborted };
  
    // Callback used to notify invokers of the dialog of success/failure.
    // |timeout| here is the length of time the token retrieved from
    // backends is valid for
    using OnSubmitCallback = base::OnceCallback<void(Result result,
                                                     const std::u16string& token,
                                                     base::TimeDelta timeout)>;
  
    // Creates and displays a new instance of a widget that hosts the
    // AuthenticationDialog, returning a pointer to it.
    // |submit_callback| is called whenever the "Submit" button is clicked
    static AuthenticationDialog* Show(OnSubmitCallback submit_callback);
  
    ~AuthenticationDialog() override;
  
    // Called post widget initialization. For now, this configures the Ok button
    // with custom behavior needed to handle retry of password entry. Also focuses
    // the text input field.
    void Init();
  
   private:
    explicit AuthenticationDialog(OnSubmitCallback submit_callback);
  
    void NotifyResult(Result result,
                      const std::u16string& token,
                      base::TimeDelta timeout);
  
    void ConfigureOkButton();
  
    void CancelAuthAttempt();
  
    void OnSubmit();
  
    void ConfigureChildViews();
  
    views::Textfield* password_field_;
    views::Label* invalid_password_label_;
  
    OnSubmitCallback on_submit_;
  };
  
  }  // namespace ash
  
  #endif  // ASH_IN_SESSION_AUTH_AUTHENTICATION_DIALOG_H_
  