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..a9e4894b8cc90e84f96a40353067833fe925495a
--- /dev/null
+++ b/ash/system/logout_button/logout_confirmation_dialog_view.h
@@ -0,0 +1,81 @@
+// 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 "ash/ash_export.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;
+class LogoutConfirmationDialogView;
+
+// This class provide setting and interface for LogoutConfirmationDialogView.
+// It's supposed to be overridden for testing purpose.
+class ASH_EXPORT LogoutConfirmationSettingsProvider {

[bartfab (slow), 2013/12/03 19:46:04]

1) This should be an inner class of LogoutConfirmationDialogView.

2) This class should be called Delegate.

3) Instead of statics getters/setters, pass the Delegate in the constructor.
This means that you will have to pass it to LogoutButtonTray first, which will
take ownership of the Delegate and will pass a Delegate* to the
LogoutConfirmationDialogView whenever it creates it.

[binjin, 2013/12/05 10:08:05]

Done.

+ public:
+  LogoutConfirmationSettingsProvider();
+  virtual ~LogoutConfirmationSettingsProvider();
+
+  virtual void LogoutCurrentUser(LogoutConfirmationDialogView* dialog);
+  virtual base::TimeTicks GetCurrentTime();
+  virtual base::TimeDelta GetUpdateInterval();
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationSettingsProvider);
+};
+
+// This class implements dialog view for logout confirmation.
+class ASH_EXPORT LogoutConfirmationDialogView :
+    public views::DialogDelegateView {
+ public:
+  LogoutConfirmationDialogView(base::WeakPtr<LogoutButtonTray> owner);
+  virtual ~LogoutConfirmationDialogView();
+
+  // views::DialogDelegateView:
+  virtual void DeleteDelegate() OVERRIDE;
+  virtual bool Accept() OVERRIDE;
+  virtual ui::ModalType GetModalType() const OVERRIDE;
+  virtual string16 GetWindowTitle() const OVERRIDE;
+  virtual string16 GetDialogButtonLabel(ui::DialogButton button) const OVERRIDE;
+
+  void Show(base::TimeDelta duration);
+  void UpdateDialogDuration(base::TimeDelta duration);
+
+  static void SetProvider(LogoutConfirmationSettingsProvider* provider);
+  static LogoutConfirmationSettingsProvider* GetProvider();
+
+ private:
+  void UpdateCountdown();
+
+  views::Label* text_label_;
+
+  base::TimeTicks countdown_start_time_;
+  base::TimeDelta duration_;
+
+  base::RepeatingTimer<LogoutConfirmationDialogView> timer_;
+
+  base::WeakPtr<LogoutButtonTray> owner_;
+
+  static LogoutConfirmationSettingsProvider* provider_;
+
+  DISALLOW_COPY_AND_ASSIGN(LogoutConfirmationDialogView);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_SYSTEM_LOGOUT_BUTTON_LOGOUT_CONFIRMATION_DIALOG_VIEW_H_