Implements the dialog view for logout button tray in public sessions.

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/system/logout_button/logout_button_observer.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 "ui/views/controls/button/button.h"
 
 namespace views {
 class LabelButton;
 }
 
 namespace ash {
 namespace internal {
 
 class StatusAreaWidget;
+class LogoutConfirmationDialogView;
 
 // Adds a logout button to the launcher's status area if enabled by the
 // kShowLogoutButtonInTray pref.
 class LogoutButtonTray : public TrayBackgroundView,
                          public LogoutButtonObserver,
                          public views::ButtonListener {
  public:
   explicit LogoutButtonTray(StatusAreaWidget* status_area_widget);
   virtual ~LogoutButtonTray();
 
+  void ShowConfirmDialog();

[bartfab (slow), 2013/10/24 13:11:02]

- Here and elsewhere: s/confirm/confirmation/
- All three methods: Why public, not private?

[binjin, 2013/10/25 13:03:10]

They are supposed to be accessed by LogoutConfirmationDialogView, and they are
already in ash::internal namespace.

+  void CloseConfirmDialog();
+  void RemoveConfirmDialogInstance(LogoutConfirmationDialogView *instance);
+
   // 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;
 
   // views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
   void UpdateAfterLoginStatusChange(user::LoginStatus login_status);
 
  private:
   void UpdateVisibility();
 
   views::LabelButton* button_;  // Not owned.
   user::LoginStatus login_status_;
   bool show_logout_button_in_tray_;
 
+  LogoutConfirmationDialogView* confirm_dialog_;

[bartfab (slow), 2013/10/24 13:11:02]

As commented in logout_confirmation_dialog_view.cc, I think this should be a
base::WeakPtr.

[binjin, 2013/10/25 13:03:10]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(LogoutButtonTray);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_BUTTON_TRAY_H_