Add LogoutConfirmationController to show LogoutConfirmationDialogs

ash/system/logout_button/logout_button_tray.h

-// Copyright 2013 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_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_TRAY_H_
-#define ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_TRAY_H_
-
-#include "ash/ash_export.h"
-#include "ash/system/logout_button/logout_button_observer.h"
-#include "ash/system/logout_button/logout_confirmation_dialog_view.h"
-#include "ash/system/tray/tray_background_view.h"
-#include "ash/system/user/login_status.h"
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "ui/views/controls/button/button.h"
-
-namespace views {
-class LabelButton;
-}
-
-namespace ash {
-namespace internal {
-
-class StatusAreaWidget;
-
-// Adds a logout button to the launcher's status area if enabled by the
-// kShowLogoutButtonInTray pref.
-class ASH_EXPORT LogoutButtonTray : public TrayBackgroundView,
-                                    public LogoutButtonObserver,
-                                    public views::ButtonListener {
- public:
-  explicit LogoutButtonTray(StatusAreaWidget* status_area_widget);
-  virtual ~LogoutButtonTray();
-
-  // TrayBackgroundView:
-  virtual void SetShelfAlignment(ShelfAlignment alignment) OVERRIDE;
-  virtual base::string16 GetAccessibleNameForTray() OVERRIDE;
-  virtual void HideBubbleWithView(
-      const views::TrayBubbleView* bubble_view) OVERRIDE;
-  virtual bool ClickedOutsideBubble() OVERRIDE;
-
-  // LogoutButtonObserver:
-  virtual void OnShowLogoutButtonInTrayChanged(bool show) OVERRIDE;
-  virtual void OnLogoutDialogDurationChanged(base::TimeDelta duration) OVERRIDE;
-
-  // views::ButtonListener:
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE;
-
-  void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
-
-  // Nullify the pointer to confirmation dialog, this is expected to be called
-  // when the confirmation dialog is going to be destroyed.
-  // Note: the confirmation dialog is not owned by LogoutButtonTray.
-  void ReleaseConfirmationDialog();
-
-  void SetDelegateForTest(
-      scoped_ptr<LogoutConfirmationDialogView::Delegate> delegate);
-
- private:
-  friend class LogoutConfirmationDialogTest;
-
-  bool IsConfirmationDialogShowing() const;
-  void EnsureConfirmationDialogIsShowing();
-  void EnsureConfirmationDialogIsClosed();
-
-  void UpdateVisibility();
-
-  views::LabelButton* button_;  // Not owned.
-  user::LoginStatus login_status_;
-  bool show_logout_button_in_tray_;
-  base::TimeDelta dialog_duration_;
-
-  LogoutConfirmationDialogView* confirmation_dialog_;  // Not owned.
-  scoped_ptr<LogoutConfirmationDialogView::Delegate> confirmation_delegate_;
-
-  DISALLOW_COPY_AND_ASSIGN(LogoutButtonTray);
-};
-
-}  // namespace internal
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_TRAY_H_