Add LogoutConfirmationController to show LogoutConfirmationDialogs

ash/system/session/logout_confirmation_dialog.cc

Index: ash/system/session/logout_confirmation_dialog.cc
diff --git a/ash/system/session/logout_confirmation_dialog.cc b/ash/system/session/logout_confirmation_dialog.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d1ddd51412a193ee32c716fa85517fe32c625f50
--- /dev/null
+++ b/ash/system/session/logout_confirmation_dialog.cc
@@ -0,0 +1,116 @@
+// Copyright 2014 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.
+
+#include "ash/system/session/logout_confirmation_dialog.h"
+
+#include "ash/shell.h"
+#include "ash/system/session/logout_confirmation_controller.h"
+#include "ash/system/tray/tray_constants.h"
+#include "base/location.h"
+#include "base/time/tick_clock.h"
+#include "grit/ash_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/l10n/time_format.h"
+#include "ui/base/ui_base_types.h"
+#include "ui/gfx/text_constants.h"
+#include "ui/views/border.h"
+#include "ui/views/controls/label.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/widget/widget.h"
+
+namespace ash {
+namespace internal {
+
+namespace {
+
+const int kCountdownUpdateIntervalMs = 1000;  // 1 second.
+
+const int kHalfSecondInMs = 500;  // Half a second.
+
+}  // namespace
+
+LogoutConfirmationDialog::LogoutConfirmationDialog(
+    LogoutConfirmationController* controller,
+    base::TimeTicks logout_time)
+    : controller_(controller),
+      logout_time_(logout_time) {
+  SetLayoutManager(new views::FillLayout());
+
+  label_ = new views::Label;
+  label_->SetBorder(views::Border::CreateEmptyBorder(
+      0, kTrayPopupPaddingHorizontal, 0, kTrayPopupPaddingHorizontal));
+  label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+  label_->SetMultiLine(true);
+  AddChildView(label_);
+
+  UpdateLabel();
+
+  CreateDialogWidget(this, ash::Shell::GetPrimaryRootWindow(), NULL);
+  GetWidget()->Show();
+
+  update_timer_.Start(
+      FROM_HERE,
+      base::TimeDelta::FromMilliseconds(kCountdownUpdateIntervalMs),
+      this,
+      &LogoutConfirmationDialog::UpdateLabel);
+}
+
+LogoutConfirmationDialog::~LogoutConfirmationDialog() {
+}
+
+void LogoutConfirmationDialog::Update(base::TimeTicks logout_time) {
+  logout_time_ = logout_time;
+  UpdateLabel();
+}
+
+bool LogoutConfirmationDialog::Accept() {
+  logout_time_ = controller_->clock()->NowTicks();
+  UpdateLabel();
+  controller_->OnLogoutConfirmed();
+  return true;
+}
+
+ui::ModalType LogoutConfirmationDialog::GetModalType() const {
+  return ui::MODAL_TYPE_SYSTEM;
+}
+
+base::string16 LogoutConfirmationDialog::GetWindowTitle() const {
+  return l10n_util::GetStringUTF16(IDS_ASH_LOGOUT_CONFIRMATION_TITLE);
+}
+
+base::string16 LogoutConfirmationDialog::GetDialogButtonLabel(
+    ui::DialogButton button) const {
+  if (button == ui::DIALOG_BUTTON_OK)
+    return l10n_util::GetStringUTF16(IDS_ASH_LOGOUT_CONFIRMATION_BUTTON);
+  return views::DialogDelegateView::GetDialogButtonLabel(button);
+}
+
+void LogoutConfirmationDialog::OnClosed() {
+  update_timer_.Stop();
+  controller_->OnDialogClosed();
+}
+
+void LogoutConfirmationDialog::DeleteDelegate() {
+  delete this;
+}
+
+void LogoutConfirmationDialog::UpdateLabel() {
+  const base::TimeDelta time_remaining =
+      logout_time_ - controller_->clock()->NowTicks();
+  if (time_remaining >= base::TimeDelta::FromMilliseconds(kHalfSecondInMs)) {
+    label_->SetText(l10n_util::GetStringFUTF16(
+        IDS_ASH_LOGOUT_CONFIRMATION_WARNING,
+        ui::TimeFormat::Detailed(ui::TimeFormat::FORMAT_DURATION,
+                                 ui::TimeFormat::LENGTH_LONG,
+                                 10,
+                                 time_remaining)));
+  } else {
+    label_->SetText(l10n_util::GetStringUTF16(
+        IDS_ASH_LOGOUT_CONFIRMATION_WARNING_NOW));
+    update_timer_.Stop();
+  }
+}
+
+}  // namespace internal
+}  // namespace ash