Options2: Pull the trigger.

chrome/browser/ui/webui/options2/chromeos/about_page_handler.cc

Index: chrome/browser/ui/webui/options2/chromeos/about_page_handler.cc
diff --git a/chrome/browser/ui/webui/options2/chromeos/about_page_handler.cc b/chrome/browser/ui/webui/options2/chromeos/about_page_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..31d960eeeeba21775de517d98a3caf80a151d2e3
--- /dev/null
+++ b/chrome/browser/ui/webui/options2/chromeos/about_page_handler.cc
@@ -0,0 +1,419 @@
+// Copyright (c) 2011 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/options2/chromeos/about_page_handler.h"
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/command_line.h"
+#include "base/i18n/time_formatting.h"
+#include "base/string16.h"
+#include "base/string_number_conversions.h"
+#include "base/time.h"
+#include "base/utf_string_conversions.h"
+#include "base/values.h"
+#include "chrome/browser/chromeos/dbus/dbus_thread_manager.h"
+#include "chrome/browser/chromeos/dbus/power_manager_client.h"
+#include "chrome/browser/chromeos/dbus/update_engine_client.h"
+#include "chrome/browser/chromeos/login/user_manager.h"
+#include "chrome/browser/chromeos/login/wizard_controller.h"
+#include "chrome/browser/google/google_util.h"
+#include "chrome/common/chrome_version_info.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/common/content_client.h"
+#include "googleurl/src/gurl.h"
+#include "grit/chromium_strings.h"
+#include "grit/generated_resources.h"
+#include "grit/locale_settings.h"
+#include "grit/theme_resources.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "v8/include/v8.h"
+#include "webkit/glue/user_agent.h"
+#include "webkit/glue/webkit_glue.h"
+#include "webkit/glue/user_agent.h"
+
+namespace {
+
+// These are used as placeholder text around the links in the text in the
+// license.
+const char kBeginLink[] = "BEGIN_LINK";
+const char kEndLink[] = "END_LINK";
+const char kBeginLinkChr[] = "BEGIN_LINK_CHR";
+const char kBeginLinkOss[] = "BEGIN_LINK_OSS";
+const char kEndLinkChr[] = "END_LINK_CHR";
+const char kEndLinkOss[] = "END_LINK_OSS";
+const char kBeginLinkCrosOss[] = "BEGIN_LINK_CROS_OSS";
+const char kEndLinkCrosOss[] = "END_LINK_CROS_OSS";
+
+// Returns a substring [start, end) from |text|.
+std::string StringSubRange(const std::string& text, size_t start,
+                           size_t end) {
+  DCHECK(end > start);
+  return text.substr(start, end - start);
+}
+
+}  // namespace
+
+namespace chromeos {
+
+class AboutPageHandler::UpdateObserver
+    : public UpdateEngineClient::Observer {
+ public:
+  explicit UpdateObserver(AboutPageHandler* handler) : page_handler_(handler) {}
+  virtual ~UpdateObserver() {}
+
+  AboutPageHandler* page_handler() const { return page_handler_; }
+
+ private:
+  virtual void UpdateStatusChanged(
+      const UpdateEngineClient::Status& status) OVERRIDE {
+    page_handler_->UpdateStatus(status);
+  }
+
+  AboutPageHandler* page_handler_;
+
+  DISALLOW_COPY_AND_ASSIGN(UpdateObserver);
+};
+
+AboutPageHandler::AboutPageHandler()
+    : progress_(-1),
+      sticky_(false),
+      started_(false)
+{}
+
+AboutPageHandler::~AboutPageHandler() {
+  if (update_observer_.get()) {
+    DBusThreadManager::Get()->GetUpdateEngineClient()->
+        RemoveObserver(update_observer_.get());
+  }
+}
+
+void AboutPageHandler::GetLocalizedValues(DictionaryValue* localized_strings) {
+  DCHECK(localized_strings);
+
+  static OptionsStringResource resources[] = {
+    { "firmware", IDS_ABOUT_PAGE_FIRMWARE },
+    { "product", IDS_PRODUCT_OS_NAME },
+    { "os", IDS_PRODUCT_OS_NAME },
+    { "platform", IDS_PLATFORM_LABEL },
+    { "loading", IDS_ABOUT_PAGE_LOADING },
+    { "check_now", IDS_ABOUT_PAGE_CHECK_NOW },
+    { "update_status", IDS_UPGRADE_CHECK_STARTED },
+    { "restart_now", IDS_RELAUNCH_AND_UPDATE },
+    { "browser", IDS_PRODUCT_NAME },
+    { "more_info", IDS_ABOUT_PAGE_MORE_INFO },
+    { "copyright", IDS_ABOUT_VERSION_COPYRIGHT },
+    { "channel", IDS_ABOUT_PAGE_CHANNEL },
+    { "stable", IDS_ABOUT_PAGE_CHANNEL_STABLE },
+    { "beta", IDS_ABOUT_PAGE_CHANNEL_BETA },
+    { "dev", IDS_ABOUT_PAGE_CHANNEL_DEVELOPMENT },
+    { "canary", IDS_ABOUT_PAGE_CHANNEL_CANARY },
+    { "channel_warning_header", IDS_ABOUT_PAGE_CHANNEL_WARNING_HEADER },
+    { "channel_warning_text", IDS_ABOUT_PAGE_CHANNEL_WARNING_TEXT },
+    { "user_agent", IDS_ABOUT_VERSION_USER_AGENT },
+    { "command_line", IDS_ABOUT_VERSION_COMMAND_LINE },
+  };
+
+  RegisterStrings(localized_strings, resources, arraysize(resources));
+  RegisterTitle(localized_strings, "aboutPage", IDS_ABOUT_TAB_TITLE);
+
+  // browser version
+
+  chrome::VersionInfo version_info;
+  DCHECK(version_info.is_valid());
+
+  std::string browser_version = version_info.Version();
+  std::string version_modifier =
+      chrome::VersionInfo::GetVersionStringModifier();
+  if (!version_modifier.empty())
+    browser_version += " " + version_modifier;
+
+#if !defined(GOOGLE_CHROME_BUILD)
+  browser_version += " (";
+  browser_version += version_info.LastChange();
+  browser_version += ")";
+#endif
+
+  localized_strings->SetString("browser_version", browser_version);
+
+  // license
+
+  std::string text = l10n_util::GetStringUTF8(IDS_ABOUT_VERSION_LICENSE);
+
+  bool chromium_url_appears_first =
+      text.find(kBeginLinkChr) < text.find(kBeginLinkOss);
+
+  size_t link1 = text.find(kBeginLink);
+  DCHECK(link1 != std::string::npos);
+  size_t link1_end = text.find(kEndLink, link1);
+  DCHECK(link1_end != std::string::npos);
+  size_t link2 = text.find(kBeginLink, link1_end);
+  DCHECK(link2 != std::string::npos);
+  size_t link2_end = text.find(kEndLink, link2);
+  DCHECK(link2_end != std::string::npos);
+
+  localized_strings->SetString("license_content_0", text.substr(0, link1));
+  localized_strings->SetString("license_content_1",
+      StringSubRange(text, link1_end + strlen(kEndLinkOss), link2));
+  localized_strings->SetString("license_content_2",
+      text.substr(link2_end + strlen(kEndLinkOss)));
+
+  // The Chromium link within the main text of the dialog.
+  localized_strings->SetString(chromium_url_appears_first ?
+      "license_link_content_0" : "license_link_content_1",
+      StringSubRange(text,
+                     text.find(kBeginLinkChr) + strlen(kBeginLinkChr),
+                     text.find(kEndLinkChr)));
+  GURL url = google_util::AppendGoogleLocaleParam(
+      GURL(chrome::kChromiumProjectURL));
+  localized_strings->SetString(chromium_url_appears_first ?
+      "license_link_0" : "license_link_1", url.spec());
+
+  // The Open Source link within the main text of the dialog.
+  localized_strings->SetString(chromium_url_appears_first ?
+      "license_link_content_1" : "license_link_content_0",
+      StringSubRange(text,
+                     text.find(kBeginLinkOss) + strlen(kBeginLinkOss),
+                     text.find(kEndLinkOss)));
+  localized_strings->SetString(chromium_url_appears_first ?
+      "license_link_1" : "license_link_0", chrome::kChromeUICreditsURL);
+
+  std::string cros_text =
+      l10n_util::GetStringUTF8(IDS_ABOUT_CROS_VERSION_LICENSE);
+
+  size_t cros_link = cros_text.find(kBeginLinkCrosOss);
+  DCHECK(cros_link != std::string::npos);
+  size_t cros_link_end = cros_text.find(kEndLinkCrosOss, cros_link);
+  DCHECK(cros_link_end != std::string::npos);
+
+  localized_strings->SetString("cros_license_content_0",
+      cros_text.substr(0, cros_link));
+  localized_strings->SetString("cros_license_content_1",
+      cros_text.substr(cros_link_end + strlen(kEndLinkCrosOss)));
+  localized_strings->SetString("cros_license_link_content_0",
+      StringSubRange(cros_text, cros_link + strlen(kBeginLinkCrosOss),
+                     cros_link_end));
+  localized_strings->SetString("cros_license_link_0",
+      chrome::kChromeUIOSCreditsURL);
+
+  // webkit
+
+  localized_strings->SetString("webkit_version",
+                               webkit_glue::GetWebKitVersion());
+
+  // javascript
+
+  localized_strings->SetString("js_engine", "V8");
+  localized_strings->SetString("js_engine_version", v8::V8::GetVersion());
+
+  // user agent
+
+  localized_strings->SetString("user_agent_info",
+                               content::GetUserAgent(GURL()));
+
+  // command line
+
+#if defined(OS_WIN)
+  localized_strings->SetString("command_line_info",
+      WideToUTF16(CommandLine::ForCurrentProcess()->GetCommandLineString()));
+#elif defined(OS_POSIX)
+  // TODO(viettrungluu): something horrible might happen if there are non-UTF-8
+  // arguments (since |SetString()| requires Unicode).
+  std::string command_line = "";
+  typedef std::vector<std::string> ArgvList;
+  const ArgvList& argv = CommandLine::ForCurrentProcess()->argv();
+  for (ArgvList::const_iterator iter = argv.begin(); iter != argv.end(); iter++)
+    command_line += " " + *iter;
+  localized_strings->SetString("command_line_info", command_line);
+#endif
+}
+
+void AboutPageHandler::RegisterMessages() {
+  web_ui_->RegisterMessageCallback("PageReady",
+      base::Bind(&AboutPageHandler::PageReady, base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("SetReleaseTrack",
+      base::Bind(&AboutPageHandler::SetReleaseTrack, base::Unretained(this)));
+
+  web_ui_->RegisterMessageCallback("CheckNow",
+      base::Bind(&AboutPageHandler::CheckNow, base::Unretained(this)));
+  web_ui_->RegisterMessageCallback("RestartNow",
+      base::Bind(&AboutPageHandler::RestartNow, base::Unretained(this)));
+}
+
+void AboutPageHandler::PageReady(const ListValue* args) {
+  // Version information is loaded from a callback
+  loader_.GetVersion(&consumer_,
+                     base::Bind(&AboutPageHandler::OnOSVersion,
+                                base::Unretained(this)),
+                     VersionLoader::VERSION_FULL);
+  loader_.GetFirmware(&consumer_,
+                      base::Bind(&AboutPageHandler::OnOSFirmware,
+                                 base::Unretained(this)));
+
+  UpdateEngineClient* update_engine_client =
+      DBusThreadManager::Get()->GetUpdateEngineClient();
+
+  update_observer_.reset(new UpdateObserver(this));
+  update_engine_client->AddObserver(update_observer_.get());
+
+  // Update the WebUI page with the current status. See comments below.
+  UpdateStatus(update_engine_client->GetLastStatus());
+
+  // Initiate update check. UpdateStatus() below will be called when we
+  // get update status via update_observer_. If the update has been
+  // already complete, update_observer_ won't receive a notification.
+  // This is why we manually update the WebUI page above.
+  CheckNow(NULL);
+
+  // Request the channel information. Use the observer to track the about
+  // page handler and ensure it does not get deleted before the callback.
+  update_engine_client->GetReleaseTrack(
+      base::Bind(UpdateSelectedChannel, update_observer_.get()));
+}
+
+void AboutPageHandler::SetReleaseTrack(const ListValue* args) {
+  if (!UserManager::Get()->current_user_is_owner()) {
+    LOG(WARNING) << "Non-owner tried to change release track.";
+    return;
+  }
+  const std::string channel = UTF16ToUTF8(ExtractStringValue(args));
+  DBusThreadManager::Get()->GetUpdateEngineClient()->SetReleaseTrack(channel);
+}
+
+void AboutPageHandler::CheckNow(const ListValue* args) {
+  // Make sure that libcros is loaded and OOBE is complete.
+  if (!WizardController::default_controller() ||
+      WizardController::IsDeviceRegistered()) {
+    DBusThreadManager::Get()->GetUpdateEngineClient()->
+        RequestUpdateCheck(UpdateEngineClient::EmptyUpdateCheckCallback());
+  }
+}
+
+void AboutPageHandler::RestartNow(const ListValue* args) {
+  DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
+}
+
+void AboutPageHandler::UpdateStatus(
+    const UpdateEngineClient::Status& status) {
+  string16 message;
+  std::string image = "up-to-date";
+  bool enabled = false;
+
+  switch (status.status) {
+    case UpdateEngineClient::UPDATE_STATUS_IDLE:
+      if (!sticky_) {
+        message = l10n_util::GetStringFUTF16(IDS_UPGRADE_ALREADY_UP_TO_DATE,
+            l10n_util::GetStringUTF16(IDS_PRODUCT_OS_NAME));
+        enabled = true;
+      }
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_CHECKING_FOR_UPDATE:
+      message = l10n_util::GetStringUTF16(IDS_UPGRADE_CHECK_STARTED);
+      sticky_ = false;
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_UPDATE_AVAILABLE:
+      message = l10n_util::GetStringUTF16(IDS_UPDATE_AVAILABLE);
+      started_ = true;
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_DOWNLOADING:
+    {
+      int progress = static_cast<int>(status.download_progress * 100.0);
+      if (progress != progress_) {
+        progress_ = progress;
+        message = l10n_util::GetStringFUTF16Int(IDS_UPDATE_DOWNLOADING,
+                                                progress_);
+      }
+      started_ = true;
+    }
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_VERIFYING:
+      message = l10n_util::GetStringUTF16(IDS_UPDATE_VERIFYING);
+      started_ = true;
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_FINALIZING:
+      message = l10n_util::GetStringUTF16(IDS_UPDATE_FINALIZING);
+      started_ = true;
+      break;
+    case UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT:
+      message = l10n_util::GetStringUTF16(IDS_UPDATE_COMPLETED);
+      image = "available";
+      sticky_ = true;
+      break;
+    default:
+    // case UpdateEngineClient::UPDATE_STATUS_ERROR:
+    // case UpdateEngineClient::UPDATE_STATUS_REPORTING_ERROR_EVENT:
+
+    // The error is only displayed if we were able to determine an
+    // update was available.
+      if (started_) {
+        message = l10n_util::GetStringUTF16(IDS_UPDATE_ERROR);
+        image = "fail";
+        enabled = true;
+        sticky_ = true;
+        started_ = false;
+      }
+      break;
+  }
+  if (message.size()) {
+    scoped_ptr<Value> update_message(Value::CreateStringValue(message));
+    // "Checking for update..." needs to be shown for a while, so users
+    // can read it, hence insert delay for this.
+    scoped_ptr<Value> insert_delay(Value::CreateBooleanValue(
+        status.status ==
+        UpdateEngineClient::UPDATE_STATUS_CHECKING_FOR_UPDATE));
+    web_ui_->CallJavascriptFunction("AboutPage.updateStatusCallback",
+                                    *update_message, *insert_delay);
+
+    scoped_ptr<Value> enabled_value(Value::CreateBooleanValue(enabled));
+    web_ui_->CallJavascriptFunction("AboutPage.updateEnableCallback",
+                                    *enabled_value);
+
+    scoped_ptr<Value> image_string(Value::CreateStringValue(image));
+    web_ui_->CallJavascriptFunction("AboutPage.setUpdateImage",
+                                    *image_string);
+  }
+  // We'll change the "Check For Update" button to "Restart" button.
+  if (status.status == UpdateEngineClient::UPDATE_STATUS_UPDATED_NEED_REBOOT) {
+    web_ui_->CallJavascriptFunction("AboutPage.changeToRestartButton");
+  }
+}
+
+void AboutPageHandler::OnOSVersion(VersionLoader::Handle handle,
+                                   std::string version) {
+  if (version.size()) {
+    scoped_ptr<Value> version_string(Value::CreateStringValue(version));
+    web_ui_->CallJavascriptFunction("AboutPage.updateOSVersionCallback",
+                                    *version_string);
+  }
+}
+
+void AboutPageHandler::OnOSFirmware(VersionLoader::Handle handle,
+                                    std::string firmware) {
+  if (firmware.size()) {
+    scoped_ptr<Value> firmware_string(Value::CreateStringValue(firmware));
+    web_ui_->CallJavascriptFunction("AboutPage.updateOSFirmwareCallback",
+                                    *firmware_string);
+  }
+}
+
+// Callback from UpdateEngine with channel information.
+// static
+void AboutPageHandler::UpdateSelectedChannel(UpdateObserver* observer,
+                                             const std::string& channel) {
+  if (DBusThreadManager::Get()->GetUpdateEngineClient()
+      ->HasObserver(observer)) {
+    // If UpdateEngineClient still has the observer, then the page handler
+    // is valid.
+    AboutPageHandler* handler = observer->page_handler();
+    scoped_ptr<Value> channel_string(Value::CreateStringValue(channel));
+    handler->web_ui_->CallJavascriptFunction(
+        "AboutPage.updateSelectedOptionCallback", *channel_string);
+  }
+}
+
+} // namespace chromeos