Date and Time dialog for when the clock isn't synced.

chrome/browser/ui/webui/options/chromeos/date_time_options_handler.cc

+// 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 "chrome/browser/ui/webui/options/chromeos/date_time_options_handler.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/set_time_dialog.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/system_clock_client.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
+#include "content/public/browser/web_ui.h"
+
+namespace chromeos {
+namespace options {
+
+DateTimeOptionsHandler::DateTimeOptionsHandler()
+    : can_set_time_(false), page_initialized_(false) {
+}
+
+DateTimeOptionsHandler::~DateTimeOptionsHandler() {
+  DBusThreadManager::Get()->GetSystemClockClient()->RemoveObserver(this);
+}
+
+void DateTimeOptionsHandler::RegisterMessages() {
+  // Callback for set time button.
+  web_ui()->RegisterMessageCallback(
+      "showSetTime",
+      base::Bind(&DateTimeOptionsHandler::HandleShowSetTime,
+                 base::Unretained(this)));
+}
+
+void DateTimeOptionsHandler::InitializeHandler() {
+  SystemClockClient* system_clock_client =
+      DBusThreadManager::Get()->GetSystemClockClient();
+  system_clock_client->AddObserver(this);
+
+  can_set_time_ = system_clock_client->CanSetTime();
+  SystemClockCanSetTimeChanged(can_set_time_);
+}
+
+void DateTimeOptionsHandler::InitializePage() {
+  page_initialized_ = true;
+  SystemClockCanSetTimeChanged(can_set_time_);
+}
+
+void DateTimeOptionsHandler::SystemClockCanSetTimeChanged(bool can_set_time) {
+  if (page_initialized_) {
+    web_ui()->CallJavascriptFunction("BrowserOptions.setCanSetTime",
+                                     base::FundamentalValue(can_set_time));
+  }
+  can_set_time_ = can_set_time;
+}
+
+void DateTimeOptionsHandler::HandleShowSetTime(const base::ListValue* args) {
+  // Make sure the clock status hasn't changed since the button was clicked.
+  if (can_set_time_) {
+    SetTimeDialog::ShowDialog(
+        web_ui()->GetWebContents()->GetView()->GetTopLevelNativeWindow());
+  }
+}
+
+}  // namespace options
+}  // namespace chromeos