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

chrome/browser/ui/webui/chromeos/set_time_ui.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/chromeos/set_time_ui.h"
+
+#include "ash/shell.h"
+#include "ash/system/tray/system_tray_delegate.h"
+#include "ash/system/user/login_status.h"
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/build_time.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/settings/cros_settings.h"
+#include "chrome/browser/chromeos/system/timezone_util.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/url_constants.h"
+#include "chromeos/dbus/dbus_thread_manager.h"
+#include "chromeos/dbus/system_clock_client.h"
+#include "chromeos/settings/timezone_settings.h"
+#include "content/public/browser/web_ui.h"
+#include "content/public/browser/web_ui_data_source.h"
+#include "content/public/browser/web_ui_message_handler.h"
+#include "grit/browser_resources.h"
+#include "grit/generated_resources.h"
+
+namespace chromeos {
+
+namespace {
+
+class SetTimeMessageHandler : public content::WebUIMessageHandler,
+                              public chromeos::SystemClockClient::Observer,
+                              public system::TimezoneSettings::Observer {
+ public:
+  SetTimeMessageHandler() {
+    system::TimezoneSettings::GetInstance()->AddObserver(this);
+    chromeos::DBusThreadManager::Get()->GetSystemClockClient()->AddObserver(
+        this);
+  };
+
+  virtual ~SetTimeMessageHandler() {
+    system::TimezoneSettings::GetInstance()->RemoveObserver(this);
+    chromeos::DBusThreadManager::Get()->GetSystemClockClient()->RemoveObserver(
+        this);
+  }
+
+  // WebUIMessageHandler:
+  virtual void RegisterMessages() OVERRIDE {
+    web_ui()->RegisterMessageCallback(
+        "setTimeInSeconds",
+        base::Bind(&SetTimeMessageHandler::OnSetTime, base::Unretained(this)));
+    web_ui()->RegisterMessageCallback(
+        "setTimezone",
+        base::Bind(&SetTimeMessageHandler::OnSetTimezone,
+                   base::Unretained(this)));
+  }
+
+ private:
+  // system::SystemClockClient::Observer:
+  virtual void SystemClockUpdated() OVERRIDE {
+    web_ui()->CallJavascriptFunction("settime.TimeSetter.updateTime");
+  }
+
+  // system::TimezoneSettings::Observer:
+  virtual void TimezoneChanged(const icu::TimeZone& timezone) OVERRIDE {
+    base::StringValue timezone_id(
+        system::TimezoneSettings::GetTimezoneID(timezone));
+    web_ui()->CallJavascriptFunction("settime.TimeSetter.setTimezone",
+                                     timezone_id);
+  }
+
+  // Handler for Javascript call to set the system clock when the user sets a
+  // new time. Expects the time as the number of seconds since the Unix
+  // epoch, treated as a double.
+  void OnSetTime(const base::ListValue* args) {
+    double seconds;
+    if (!args->GetDouble(0, &seconds)) {
+      NOTREACHED();
+      return;
+    }
+
+    chromeos::DBusThreadManager::Get()->GetSystemClockClient()->SetTime(
+        static_cast<int64>(seconds));
+  }
+
+  // Handler for Javascript call to change the system time zone when the user
+  // selects a new time zone. Expects the time zone ID as a string, as it
+  // appears in the time zone option values.
+  void OnSetTimezone(const base::ListValue* args) {
+    std::string timezone_id;
+    if (!args->GetString(0, &timezone_id)) {
+      NOTREACHED();
+      return;
+    }
+
+    CrosSettings::Get()->SetString(kSystemTimezone, timezone_id);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(SetTimeMessageHandler);
+};
+
+}  // namespace
+
+SetTimeUI::SetTimeUI(content::WebUI* web_ui) : WebDialogUI(web_ui) {
+  web_ui->AddMessageHandler(new SetTimeMessageHandler());
+
+  // Set up the chrome://set-time source.
+  content::WebUIDataSource* source =
+      content::WebUIDataSource::Create(chrome::kChromeUISetTimeHost);
+  source->SetUseJsonJSFormatV2();
+
+  source->AddLocalizedString("setTimeTitle", IDS_SET_TIME_TITLE);
+  source->AddLocalizedString("prompt", IDS_SET_TIME_PROMPT);
+  source->AddLocalizedString("doneButton", IDS_SET_TIME_BUTTON_CLOSE);
+  source->AddLocalizedString("timezone",
+                             IDS_OPTIONS_SETTINGS_TIMEZONE_DESCRIPTION);
+
+  base::DictionaryValue values;
+  values.Set("timezoneList", chromeos::system::GetTimezoneList().release());
+
+  // If we are not logged in, we need to show the time zone dropdown.
+  // Otherwise, we can leave |currentTimezoneId| blank.
+  std::string current_timezone_id;
+  if (ash::Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus() ==
+      ash::user::LOGGED_IN_NONE) {
+    CrosSettings::Get()->GetString(kSystemTimezone, &current_timezone_id);
+  }
+  values.SetString("currentTimezoneId", current_timezone_id);
+  values.SetDouble("buildTime", base::GetBuildTime().ToJsTime());
+
+  source->AddLocalizedStrings(values);
+  source->SetJsonPath("strings.js");
+
+  source->AddResourcePath("set_time.css", IDR_SET_TIME_CSS);
+  source->AddResourcePath("set_time.js", IDR_SET_TIME_JS);
+  source->SetDefaultResource(IDR_SET_TIME_HTML);
+
+  content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), source);
+}
+
+SetTimeUI::~SetTimeUI() {
+}
+
+}  // namespace chromeos