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      1 // Copyright (c) 2011 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_SCREEN_LOCK_VIEW_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCK_VIEW_H_
      7 #pragma once
      8 
      9 #include "chrome/browser/chromeos/login/helper.h"
     10 #include "chrome/browser/chromeos/login/user_view.h"
     11 #include "content/common/notification_observer.h"
     12 #include "content/common/notification_registrar.h"
     13 #include "views/controls/textfield/textfield_controller.h"
     14 #include "views/view.h"
     15 
     16 namespace views {
     17 class ImageView;
     18 }  // namespace views
     19 
     20 namespace chromeos {
     21 
     22 class ScreenLocker;
     23 class UserView;
     24 
     25 namespace test {
     26 class ScreenLockerTester;
     27 }  // namespace test
     28 
     29 // ScreenLockView creates view components necessary to authenticate
     30 // a user to unlock the screen.
     31 class ScreenLockView : public ThrobberHostView,
     32                        public views::TextfieldController,
     33                        public NotificationObserver,
     34                        public UserView::Delegate {
     35  public:
     36   explicit ScreenLockView(ScreenLocker* screen_locker);
     37   virtual ~ScreenLockView();
     38 
     39   void Init();
     40 
     41   // Clears and sets the focus to the password field.
     42   void ClearAndSetFocusToPassword();
     43 
     44   // Enable/Disable signout button.
     45   void SetSignoutEnabled(bool enabled);
     46 
     47   // Returns the bounds of the password field in ScreenLocker's coordinate.
     48   gfx::Rect GetPasswordBoundsRelativeTo(const views::View* view);
     49 
     50   // views::View:
     51   virtual void SetEnabled(bool enabled);
     52   virtual void Layout();
     53   virtual gfx::Size GetPreferredSize();
     54 
     55   // NotificationObserver:
     56   virtual void Observe(NotificationType type,
     57                        const NotificationSource& source,
     58                        const NotificationDetails& details);
     59 
     60   // views::TextfieldController:
     61   virtual void ContentsChanged(views::Textfield* sender,
     62                                const string16& new_contents);
     63   virtual bool HandleKeyEvent(views::Textfield* sender,
     64                               const views::KeyEvent& keystroke);
     65 
     66   // UserView::Delegate:
     67   virtual void OnSignout();
     68   virtual bool IsUserSelected() const { return true; }
     69 
     70  private:
     71   friend class test::ScreenLockerTester;
     72 
     73   UserView* user_view_;
     74 
     75   // For editing the password.
     76   views::Textfield* password_field_;
     77 
     78   // ScreenLocker is owned by itself.
     79   ScreenLocker* screen_locker_;
     80 
     81   NotificationRegistrar registrar_;
     82 
     83   // User's picture, signout button and password field.
     84   views::View* main_;
     85 
     86   // Username that overlays on top of user's picture.
     87   views::View* username_;
     88 
     89   DISALLOW_COPY_AND_ASSIGN(ScreenLockView);
     90 };
     91 
     92 }  // namespace chromeos
     93 
     94 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREEN_LOCK_VIEW_H_
     95