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

ash/system/logout_button/logout_confirmation_dialog_view.h

Index: ash/system/logout_button/logout_confirmation_dialog_view.h
diff --git a/ash/system/logout_button/logout_confirmation_dialog_view.h b/ash/system/logout_button/logout_confirmation_dialog_view.h
new file mode 100644
index 0000000000000000000000000000000000000000..c6262906330ba4b84fb2833b27e129fb120eb801
--- /dev/null
+++ b/ash/system/logout_button/logout_confirmation_dialog_view.h
@@ -0,0 +1,59 @@
+// Copyright (c) 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_CONFIRMATION_DIALOG_VIEW_H_
+#define ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_CONFIRMATION_DIALOG_VIEW_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
+#include "base/timer/timer.h"
+#include "ui/views/window/dialog_delegate.h"
+
+namespace views {
+class Label;
+}
+
+namespace ash {
+
+namespace internal {
+
+class LogoutButtonTray;
+
+// This class implements dialog view for logout confirmation, supposed to be

[bartfab (slow), 2013/10/28 16:24:07]

I do not think the part "supposed to be used by logout button tray directly" is
necessary.

[binjin, 2013/10/29 16:07:05]

Done.

+// used by logout button tray directly.
+class LogoutConfirmationDialogView : public views::DialogDelegateView {
+ public:
+  base::WeakPtr<LogoutConfirmationDialogView> GetWeakPtr();

[bartfab (slow), 2013/10/28 16:24:07]

SupportsWeakPtr provides this. But as commented elsewhere, I actually think the
WeakPtr was a bad idea here - sorry.

[binjin, 2013/10/29 16:07:05]

Done.

+
+  // views::DialogDelegateView:
+  virtual bool Accept() OVERRIDE;
+  virtual ui::ModalType GetModalType() const OVERRIDE;
+  virtual string16 GetWindowTitle() const OVERRIDE;
+  virtual string16 GetDialogButtonLabel(ui::DialogButton button) const OVERRIDE;
+
+  LogoutConfirmationDialogView();

[bartfab (slow), 2013/10/28 16:24:07]

The constructor and destructor should be the first members.

[binjin, 2013/10/29 16:07:05]

Done.

+  virtual ~LogoutConfirmationDialogView();
+  void Show(base::TimeDelta duration);
+  void UpdateCountdown();
+
+ private:
+  views::Label* text_label_;
+
+  base::TimeTicks countdown_end_time_;

[bartfab (slow), 2013/10/28 16:24:07]

Instead of having to pass the time to the dialog and running a timer here, how
about LogoutButton runs a timer and manages the dialog?

[binjin, 2013/10/29 16:07:05]

I think the current approach is fine. The life time of logout confirmation
dialog
and logout button is different and I believe the timer should be with the
dialog.

+
+  base::RepeatingTimer<LogoutConfirmationDialogView> timer_;
+
+  base::WeakPtrFactory<LogoutConfirmationDialogView> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationDialogView);
+};
+
+}  // namespace internal
+
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_CONFIRMATION_DIALOG_VIEW_H_
+