chrome/browser/ui/webui/help/help_handler.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/webui/help/help_handler.h"
   6
   7 #include <string>
   8
   9 #include "base/basictypes.h"
  10 #include "base/bind.h"
  11 #include "base/bind_helpers.h"
  12 #include "base/command_line.h"
  13 #include "base/files/file_util.h"
  14 #include "base/location.h"
  15 #include "base/strings/string16.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_util.h"
  18 #include "base/strings/utf_string_conversions.h"
  19 #include "base/task_runner_util.h"
  20 #include "base/values.h"
  21 #include "chrome/browser/browser_process.h"
  22 #include "chrome/browser/chrome_notification_types.h"
  23 #include "chrome/browser/ui/browser.h"
  24 #include "chrome/browser/ui/browser_commands.h"
  25 #include "chrome/browser/ui/browser_finder.h"
  26 #include "chrome/browser/ui/chrome_pages.h"
  27 #include "chrome/common/chrome_content_client.h"
  28 #include "chrome/common/chrome_version_info.h"
  29 #include "chrome/common/pref_names.h"
  30 #include "chrome/common/url_constants.h"
  31 #include "chrome/grit/chromium_strings.h"
  32 #include "chrome/grit/generated_resources.h"
  33 #include "components/google/core/browser/google_util.h"
  34 #include "content/public/browser/browser_thread.h"
  35 #include "content/public/browser/notification_service.h"
  36 #include "content/public/browser/web_contents.h"
  37 #include "content/public/browser/web_ui.h"
  38 #include "content/public/common/user_agent.h"
  39 #include "grit/components_strings.h"
  40 #include "ui/base/l10n/l10n_util.h"
  41 #include "v8/include/v8.h"
  42
  43 #if defined(OS_MACOSX)
  44 #include "chrome/browser/mac/obsolete_system.h"
  45 #endif
  46
  47 #if defined(OS_CHROMEOS)
  48 #include "base/files/file_util_proxy.h"
  49 #include "base/i18n/time_formatting.h"
  50 #include "base/prefs/pref_service.h"
  51 #include "base/sys_info.h"
  52 #include "base/task_runner_util.h"
  53 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos.h"
  54 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.h"
  55 #include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
  56 #include "chrome/browser/chromeos/profiles/profile_helper.h"
  57 #include "chrome/browser/chromeos/settings/cros_settings.h"
  58 #include "chrome/browser/profiles/profile.h"
  59 #include "chrome/browser/ui/webui/chromeos/image_source.h"
  60 #include "chrome/browser/ui/webui/help/help_utils_chromeos.h"
  61 #include "chrome/browser/ui/webui/help/version_updater_chromeos.h"
  62 #include "chromeos/chromeos_switches.h"
  63 #include "chromeos/dbus/dbus_thread_manager.h"
  64 #include "chromeos/dbus/power_manager_client.h"
  65 #include "components/user_manager/user_manager.h"
  66 #endif
  67
  68 using base::ListValue;
  69 using content::BrowserThread;
  70
  71 namespace {
  72
  73 #if defined(OS_CHROMEOS)
  74
  75 const char kFCCLabelTextPath[] = "fcc/label.txt";
  76
  77 // Returns message that informs user that for update it's better to
  78 // connect to a network of one of the allowed types.
  79 base::string16 GetAllowedConnectionTypesMessage() {
  80   if (help_utils_chromeos::IsUpdateOverCellularAllowed()) {
  81     return l10n_util::GetStringUTF16(IDS_UPGRADE_NETWORK_LIST_CELLULAR_ALLOWED);
  82   } else {
  83     return l10n_util::GetStringUTF16(
  84         IDS_UPGRADE_NETWORK_LIST_CELLULAR_DISALLOWED);
  85   }
  86 }
  87
  88 // Returns true if the device is enterprise managed, false otherwise.
  89 bool IsEnterpriseManaged() {
  90   policy::BrowserPolicyConnectorChromeOS* connector =
  91       g_browser_process->platform_part()->browser_policy_connector_chromeos();
  92   return connector->IsEnterpriseManaged();
  93 }
  94
  95 // Returns true if current user can change channel, false otherwise.
  96 bool CanChangeChannel(Profile* profile) {
  97   bool value = false;
  98   chromeos::CrosSettings::Get()->GetBoolean(chromeos::kReleaseChannelDelegated,
  99                                             &value);
 100
 101   // On a managed machine we delegate this setting to the users of the same
 102   // domain only if the policy value is "domain".
 103   if (IsEnterpriseManaged()) {
 104     if (!value)
 105       return false;
 106     // Get the currently logged in user and strip the domain part only.
 107     std::string domain = "";
 108     const user_manager::User* user =
 109         profile ? chromeos::ProfileHelper::Get()->GetUserByProfile(profile)
 110                 : nullptr;
 111     std::string email = user ? user->email() : std::string();
 112     size_t at_pos = email.find('@');
 113     if (at_pos != std::string::npos && at_pos + 1 < email.length())
 114       domain = email.substr(email.find('@') + 1);
 115     policy::BrowserPolicyConnectorChromeOS* connector =
 116         g_browser_process->platform_part()->browser_policy_connector_chromeos();
 117     return domain == connector->GetEnterpriseDomain();
 118   } else {
 119     chromeos::OwnerSettingsServiceChromeOS* service =
 120         chromeos::OwnerSettingsServiceChromeOSFactory::GetInstance()
 121             ->GetForBrowserContext(profile);
 122     // On non managed machines we have local owner who is the only one to change
 123     // anything. Ensure that ReleaseChannelDelegated is false.
 124     if (service && service->IsOwner())
 125       return !value;
 126   }
 127   return false;
 128 }
 129
 130 // Reads the file containing the FCC label text, if found. Must be called from
 131 // the blocking pool.
 132 std::string ReadFCCLabelText() {
 133   const base::FilePath asset_dir(FILE_PATH_LITERAL(chrome::kChromeOSAssetPath));
 134   const base::FilePath label_file_path =
 135       asset_dir.AppendASCII(kFCCLabelTextPath);
 136
 137   std::string contents;
 138   if (base::ReadFileToString(label_file_path, &contents))
 139     return contents;
 140   return std::string();
 141 }
 142
 143 #endif  // defined(OS_CHROMEOS)
 144
 145 }  // namespace
 146
 147 HelpHandler::HelpHandler()
 148     : weak_factory_(this) {
 149 }
 150
 151 HelpHandler::~HelpHandler() {
 152 }
 153
 154 void HelpHandler::GetLocalizedValues(base::DictionaryValue* localized_strings) {
 155   struct L10nResources {
 156     const char* name;
 157     int ids;
 158   };
 159
 160   static L10nResources resources[] = {
 161     { "aboutTitle", IDS_ABOUT_TITLE },
 162 #if defined(OS_CHROMEOS)
 163     { "aboutProductTitle", IDS_PRODUCT_OS_NAME },
 164 #else
 165     { "aboutProductTitle", IDS_PRODUCT_NAME },
 166 #endif
 167     { "aboutProductDescription", IDS_ABOUT_PRODUCT_DESCRIPTION },
 168     { "relaunch", IDS_RELAUNCH_BUTTON },
 169 #if defined(OS_CHROMEOS)
 170     { "relaunchAndPowerwash", IDS_RELAUNCH_AND_POWERWASH_BUTTON },
 171 #endif
 172     { "productName", IDS_PRODUCT_NAME },
 173     { "updateCheckStarted", IDS_UPGRADE_CHECK_STARTED },
 174     { "upToDate", IDS_UPGRADE_UP_TO_DATE },
 175     { "updating", IDS_UPGRADE_UPDATING },
 176 #if defined(OS_CHROMEOS)
 177     { "updateButton", IDS_UPGRADE_BUTTON },
 178     { "updatingChannelSwitch", IDS_UPGRADE_UPDATING_CHANNEL_SWITCH },
 179 #endif
 180     { "updateAlmostDone", IDS_UPGRADE_SUCCESSFUL_RELAUNCH },
 181 #if defined(OS_CHROMEOS)
 182     { "successfulChannelSwitch", IDS_UPGRADE_SUCCESSFUL_CHANNEL_SWITCH },
 183 #endif
 184     { "getHelpWithChrome", IDS_GET_HELP_USING_CHROME },
 185     { "reportAnIssue", IDS_REPORT_AN_ISSUE },
 186 #if defined(OS_CHROMEOS)
 187     { "platform", IDS_PLATFORM_LABEL },
 188     { "firmware", IDS_ABOUT_PAGE_FIRMWARE },
 189     { "showMoreInfo", IDS_SHOW_MORE_INFO },
 190     { "hideMoreInfo", IDS_HIDE_MORE_INFO },
 191     { "channel", IDS_ABOUT_PAGE_CHANNEL },
 192     { "stable", IDS_ABOUT_PAGE_CHANNEL_STABLE },
 193     { "beta", IDS_ABOUT_PAGE_CHANNEL_BETA },
 194     { "dev", IDS_ABOUT_PAGE_CHANNEL_DEVELOPMENT },
 195     { "channel-changed", IDS_ABOUT_PAGE_CHANNEL_CHANGED },
 196     { "currentChannelStable", IDS_ABOUT_PAGE_CURRENT_CHANNEL_STABLE },
 197     { "currentChannelBeta", IDS_ABOUT_PAGE_CURRENT_CHANNEL_BETA },
 198     { "currentChannelDev", IDS_ABOUT_PAGE_CURRENT_CHANNEL_DEV },
 199     { "currentChannel", IDS_ABOUT_PAGE_CURRENT_CHANNEL },
 200     { "channelChangeButton", IDS_ABOUT_PAGE_CHANNEL_CHANGE_BUTTON },
 201     { "channelChangeDisallowedMessage",
 202       IDS_ABOUT_PAGE_CHANNEL_CHANGE_DISALLOWED_MESSAGE },
 203     { "channelChangePageTitle", IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_TITLE },
 204     { "channelChangePagePowerwashTitle",
 205       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_POWERWASH_TITLE },
 206     { "channelChangePagePowerwashMessage",
 207       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_POWERWASH_MESSAGE },
 208     { "channelChangePageDelayedChangeTitle",
 209       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_DELAYED_CHANGE_TITLE },
 210     { "channelChangePageUnstableTitle",
 211       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_UNSTABLE_TITLE },
 212     { "channelChangePagePowerwashButton",
 213       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_POWERWASH_BUTTON },
 214     { "channelChangePageChangeButton",
 215       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_CHANGE_BUTTON },
 216     { "channelChangePageCancelButton",
 217       IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_CANCEL_BUTTON },
 218     { "webkit", IDS_WEBKIT },
 219     { "userAgent", IDS_ABOUT_VERSION_USER_AGENT },
 220     { "commandLine", IDS_ABOUT_VERSION_COMMAND_LINE },
 221     { "buildDate", IDS_ABOUT_VERSION_BUILD_DATE },
 222 #endif
 223 #if defined(OS_MACOSX)
 224     { "promote", IDS_ABOUT_CHROME_PROMOTE_UPDATER },
 225     { "learnMore", IDS_LEARN_MORE },
 226 #endif
 227   };
 228
 229   for (size_t i = 0; i < arraysize(resources); ++i) {
 230     localized_strings->SetString(resources[i].name,
 231                                  l10n_util::GetStringUTF16(resources[i].ids));
 232   }
 233
 234 #if defined(OS_MACOSX)
 235   localized_strings->SetString(
 236       "updateObsoleteSystem",
 237       ObsoleteSystemMac::LocalizedObsoleteSystemString());
 238   localized_strings->SetString(
 239       "updateObsoleteSystemURL",
 240       chrome::kMac32BitDeprecationURL);
 241 #endif
 242
 243   localized_strings->SetString(
 244       "browserVersion",
 245       l10n_util::GetStringFUTF16(IDS_ABOUT_PRODUCT_VERSION,
 246                                  BuildBrowserVersionString()));
 247
 248   base::Time::Exploded exploded_time;
 249   base::Time::Now().LocalExplode(&exploded_time);
 250   localized_strings->SetString(
 251       "productCopyright",
 252        l10n_util::GetStringFUTF16(IDS_ABOUT_VERSION_COPYRIGHT,
 253                                   base::IntToString16(exploded_time.year)));
 254
 255   base::string16 license = l10n_util::GetStringFUTF16(
 256       IDS_ABOUT_VERSION_LICENSE,
 257       base::ASCIIToUTF16(chrome::kChromiumProjectURL),
 258       base::ASCIIToUTF16(chrome::kChromeUICreditsURL));
 259   localized_strings->SetString("productLicense", license);
 260
 261 #if defined(OS_CHROMEOS)
 262   base::string16 os_license = l10n_util::GetStringFUTF16(
 263       IDS_ABOUT_CROS_VERSION_LICENSE,
 264       base::ASCIIToUTF16(chrome::kChromeUIOSCreditsURL));
 265   localized_strings->SetString("productOsLicense", os_license);
 266
 267   base::string16 product_name = l10n_util::GetStringUTF16(IDS_PRODUCT_OS_NAME);
 268   localized_strings->SetString(
 269       "channelChangePageDelayedChangeMessage",
 270       l10n_util::GetStringFUTF16(
 271           IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_DELAYED_CHANGE_MESSAGE,
 272           product_name));
 273   localized_strings->SetString(
 274       "channelChangePageUnstableMessage",
 275       l10n_util::GetStringFUTF16(
 276           IDS_ABOUT_PAGE_CHANNEL_CHANGE_PAGE_UNSTABLE_MESSAGE,
 277           product_name));
 278
 279   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 280           chromeos::switches::kDisableNewChannelSwitcherUI)) {
 281     localized_strings->SetBoolean("disableNewChannelSwitcherUI", true);
 282   }
 283 #endif
 284
 285   base::string16 tos = l10n_util::GetStringFUTF16(
 286       IDS_ABOUT_TERMS_OF_SERVICE, base::UTF8ToUTF16(chrome::kChromeUITermsURL));
 287   localized_strings->SetString("productTOS", tos);
 288
 289   localized_strings->SetString("webkitVersion", content::GetWebKitVersion());
 290
 291   localized_strings->SetString("jsEngine", "V8");
 292   localized_strings->SetString("jsEngineVersion", v8::V8::GetVersion());
 293
 294   localized_strings->SetString("userAgentInfo", GetUserAgent());
 295
 296   base::CommandLine::StringType command_line =
 297       base::CommandLine::ForCurrentProcess()->GetCommandLineString();
 298   localized_strings->SetString("commandLineInfo", command_line);
 299 }
 300
 301 void HelpHandler::RegisterMessages() {
 302   version_updater_.reset(VersionUpdater::Create(web_ui()->GetWebContents()));
 303   registrar_.Add(this, chrome::NOTIFICATION_UPGRADE_RECOMMENDED,
 304                  content::NotificationService::AllSources());
 305
 306   web_ui()->RegisterMessageCallback("onPageLoaded",
 307       base::Bind(&HelpHandler::OnPageLoaded, base::Unretained(this)));
 308   web_ui()->RegisterMessageCallback("relaunchNow",
 309       base::Bind(&HelpHandler::RelaunchNow, base::Unretained(this)));
 310   web_ui()->RegisterMessageCallback("openFeedbackDialog",
 311       base::Bind(&HelpHandler::OpenFeedbackDialog, base::Unretained(this)));
 312   web_ui()->RegisterMessageCallback("openHelpPage",
 313       base::Bind(&HelpHandler::OpenHelpPage, base::Unretained(this)));
 314 #if defined(OS_CHROMEOS)
 315   web_ui()->RegisterMessageCallback("setChannel",
 316       base::Bind(&HelpHandler::SetChannel, base::Unretained(this)));
 317   web_ui()->RegisterMessageCallback("relaunchAndPowerwash",
 318       base::Bind(&HelpHandler::RelaunchAndPowerwash, base::Unretained(this)));
 319   web_ui()->RegisterMessageCallback("requestUpdate",
 320       base::Bind(&HelpHandler::RequestUpdate, base::Unretained(this)));
 321 #endif
 322 #if defined(OS_MACOSX)
 323   web_ui()->RegisterMessageCallback("promoteUpdater",
 324       base::Bind(&HelpHandler::PromoteUpdater, base::Unretained(this)));
 325 #endif
 326
 327 #if defined(OS_CHROMEOS)
 328   // Handler for the product label image, which will be shown if available.
 329   content::URLDataSource::Add(Profile::FromWebUI(web_ui()),
 330                               new chromeos::ImageSource());
 331 #endif
 332 }
 333
 334 void HelpHandler::Observe(int type, const content::NotificationSource& source,
 335                           const content::NotificationDetails& details) {
 336   switch (type) {
 337     case chrome::NOTIFICATION_UPGRADE_RECOMMENDED: {
 338       // A version update is installed and ready to go. Refresh the UI so the
 339       // correct state will be shown.
 340       RequestUpdate(NULL);
 341       break;
 342     }
 343     default:
 344       NOTREACHED();
 345   }
 346 }
 347
 348 // static
 349 base::string16 HelpHandler::BuildBrowserVersionString() {
 350   chrome::VersionInfo version_info;
 351
 352   std::string version = version_info.Version();
 353
 354   std::string modifier = chrome::VersionInfo::GetVersionStringModifier();
 355   if (!modifier.empty())
 356     version += " " + modifier;
 357
 358 #if defined(ARCH_CPU_64_BITS)
 359   version += " (64-bit)";
 360 #endif
 361
 362   return base::UTF8ToUTF16(version);
 363 }
 364
 365 void HelpHandler::OnPageLoaded(const base::ListValue* args) {
 366 #if defined(OS_CHROMEOS)
 367   base::PostTaskAndReplyWithResult(
 368       content::BrowserThread::GetBlockingPool(),
 369       FROM_HERE,
 370       base::Bind(&chromeos::version_loader::GetVersion,
 371                  chromeos::version_loader::VERSION_FULL),
 372       base::Bind(&HelpHandler::OnOSVersion,
 373                  weak_factory_.GetWeakPtr()));
 374   base::PostTaskAndReplyWithResult(
 375       content::BrowserThread::GetBlockingPool(),
 376       FROM_HERE,
 377       base::Bind(&chromeos::version_loader::GetFirmware),
 378       base::Bind(&HelpHandler::OnOSFirmware,
 379                  weak_factory_.GetWeakPtr()));
 380
 381   web_ui()->CallJavascriptFunction(
 382       "help.HelpPage.updateEnableReleaseChannel",
 383       base::FundamentalValue(CanChangeChannel(Profile::FromWebUI(web_ui()))));
 384
 385   base::Time build_time = base::SysInfo::GetLsbReleaseTime();
 386   base::string16 build_date = base::TimeFormatFriendlyDate(build_time);
 387   web_ui()->CallJavascriptFunction("help.HelpPage.setBuildDate",
 388                                    base::StringValue(build_date));
 389 #endif  // defined(OS_CHROMEOS)
 390
 391   // On Chrome OS, do not check for an update automatically.
 392 #if defined(OS_CHROMEOS)
 393   static_cast<VersionUpdaterCros*>(version_updater_.get())->GetUpdateStatus(
 394       base::Bind(&HelpHandler::SetUpdateStatus, base::Unretained(this)));
 395 #else
 396   RequestUpdate(NULL);
 397 #endif
 398
 399 #if defined(OS_MACOSX)
 400   web_ui()->CallJavascriptFunction(
 401       "help.HelpPage.setObsoleteSystem",
 402       base::FundamentalValue(ObsoleteSystemMac::Is32BitObsoleteNowOrSoon() &&
 403                              ObsoleteSystemMac::Has32BitOnlyCPU()));
 404   web_ui()->CallJavascriptFunction(
 405       "help.HelpPage.setObsoleteSystemEndOfTheLine",
 406       base::FundamentalValue(ObsoleteSystemMac::Is32BitObsoleteNowOrSoon() &&
 407                              ObsoleteSystemMac::Is32BitEndOfTheLine()));
 408 #endif
 409
 410 #if defined(OS_CHROMEOS)
 411   web_ui()->CallJavascriptFunction(
 412       "help.HelpPage.updateIsEnterpriseManaged",
 413       base::FundamentalValue(IsEnterpriseManaged()));
 414   // First argument to GetChannel() is a flag that indicates whether
 415   // current channel should be returned (if true) or target channel
 416   // (otherwise).
 417   version_updater_->GetChannel(true,
 418       base::Bind(&HelpHandler::OnCurrentChannel, weak_factory_.GetWeakPtr()));
 419   version_updater_->GetChannel(false,
 420       base::Bind(&HelpHandler::OnTargetChannel, weak_factory_.GetWeakPtr()));
 421
 422   base::PostTaskAndReplyWithResult(
 423       content::BrowserThread::GetBlockingPool(),
 424       FROM_HERE,
 425       base::Bind(&ReadFCCLabelText),
 426       base::Bind(&HelpHandler::OnFCCLabelTextRead,
 427                  weak_factory_.GetWeakPtr()));
 428 #endif
 429 }
 430
 431 #if defined(OS_MACOSX)
 432 void HelpHandler::PromoteUpdater(const base::ListValue* args) {
 433   version_updater_->PromoteUpdater();
 434 }
 435 #endif
 436
 437 void HelpHandler::RelaunchNow(const base::ListValue* args) {
 438   DCHECK(args->empty());
 439   version_updater_->RelaunchBrowser();
 440 }
 441
 442 void HelpHandler::OpenFeedbackDialog(const base::ListValue* args) {
 443   DCHECK(args->empty());
 444   Browser* browser = chrome::FindBrowserWithWebContents(
 445       web_ui()->GetWebContents());
 446   chrome::OpenFeedbackDialog(browser);
 447 }
 448
 449 void HelpHandler::OpenHelpPage(const base::ListValue* args) {
 450   DCHECK(args->empty());
 451   Browser* browser = chrome::FindBrowserWithWebContents(
 452       web_ui()->GetWebContents());
 453   chrome::ShowHelp(browser, chrome::HELP_SOURCE_WEBUI);
 454 }
 455
 456 #if defined(OS_CHROMEOS)
 457
 458 void HelpHandler::SetChannel(const base::ListValue* args) {
 459   DCHECK(args->GetSize() == 2);
 460
 461   if (!CanChangeChannel(Profile::FromWebUI(web_ui()))) {
 462     LOG(WARNING) << "Non-owner tried to change release track.";
 463     return;
 464   }
 465
 466   base::string16 channel;
 467   bool is_powerwash_allowed;
 468   if (!args->GetString(0, &channel) ||
 469       !args->GetBoolean(1, &is_powerwash_allowed)) {
 470     LOG(ERROR) << "Can't parse SetChannel() args";
 471     return;
 472   }
 473
 474   version_updater_->SetChannel(base::UTF16ToUTF8(channel),
 475                                is_powerwash_allowed);
 476   if (user_manager::UserManager::Get()->IsCurrentUserOwner()) {
 477     // Check for update after switching release channel.
 478     version_updater_->CheckForUpdate(base::Bind(&HelpHandler::SetUpdateStatus,
 479                                                 base::Unretained(this)));
 480   }
 481 }
 482
 483 void HelpHandler::RelaunchAndPowerwash(const base::ListValue* args) {
 484   DCHECK(args->empty());
 485
 486   if (IsEnterpriseManaged())
 487     return;
 488
 489   PrefService* prefs = g_browser_process->local_state();
 490   prefs->SetBoolean(prefs::kFactoryResetRequested, true);
 491   prefs->CommitPendingWrite();
 492
 493   // Perform sign out. Current chrome process will then terminate, new one will
 494   // be launched (as if it was a restart).
 495   chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->RequestRestart();
 496 }
 497
 498 #endif  // defined(OS_CHROMEOS)
 499
 500 void HelpHandler::RequestUpdate(const base::ListValue* args) {
 501   version_updater_->CheckForUpdate(
 502       base::Bind(&HelpHandler::SetUpdateStatus, base::Unretained(this))
 503 #if defined(OS_MACOSX)
 504       , base::Bind(&HelpHandler::SetPromotionState, base::Unretained(this))
 505 #endif
 506       );
 507 }
 508
 509 void HelpHandler::SetUpdateStatus(VersionUpdater::Status status,
 510                                   int progress, const base::string16& message) {
 511   // Only UPDATING state should have progress set.
 512   DCHECK(status == VersionUpdater::UPDATING || progress == 0);
 513
 514   std::string status_str;
 515   switch (status) {
 516   case VersionUpdater::CHECKING:
 517     status_str = "checking";
 518     break;
 519   case VersionUpdater::UPDATING:
 520     status_str = "updating";
 521     break;
 522   case VersionUpdater::NEARLY_UPDATED:
 523     status_str = "nearly_updated";
 524     break;
 525   case VersionUpdater::UPDATED:
 526     status_str = "updated";
 527     break;
 528   case VersionUpdater::FAILED:
 529   case VersionUpdater::FAILED_OFFLINE:
 530   case VersionUpdater::FAILED_CONNECTION_TYPE_DISALLOWED:
 531     status_str = "failed";
 532     break;
 533   case VersionUpdater::DISABLED:
 534     status_str = "disabled";
 535     break;
 536   }
 537
 538   web_ui()->CallJavascriptFunction("help.HelpPage.setUpdateStatus",
 539                                    base::StringValue(status_str),
 540                                    base::StringValue(message));
 541
 542   if (status == VersionUpdater::UPDATING) {
 543     web_ui()->CallJavascriptFunction("help.HelpPage.setProgress",
 544                                      base::FundamentalValue(progress));
 545   }
 546
 547 #if defined(OS_CHROMEOS)
 548   if (status == VersionUpdater::FAILED_OFFLINE ||
 549       status == VersionUpdater::FAILED_CONNECTION_TYPE_DISALLOWED) {
 550     base::string16 types_msg = GetAllowedConnectionTypesMessage();
 551     if (!types_msg.empty()) {
 552       web_ui()->CallJavascriptFunction(
 553           "help.HelpPage.setAndShowAllowedConnectionTypesMsg",
 554           base::StringValue(types_msg));
 555     } else {
 556       web_ui()->CallJavascriptFunction(
 557           "help.HelpPage.showAllowedConnectionTypesMsg",
 558           base::FundamentalValue(false));
 559     }
 560   } else {
 561     web_ui()->CallJavascriptFunction(
 562         "help.HelpPage.showAllowedConnectionTypesMsg",
 563         base::FundamentalValue(false));
 564   }
 565 #endif  // defined(OS_CHROMEOS)
 566 }
 567
 568 #if defined(OS_MACOSX)
 569 void HelpHandler::SetPromotionState(VersionUpdater::PromotionState state) {
 570   std::string state_str;
 571   switch (state) {
 572   case VersionUpdater::PROMOTE_HIDDEN:
 573     state_str = "hidden";
 574     break;
 575   case VersionUpdater::PROMOTE_ENABLED:
 576     state_str = "enabled";
 577     break;
 578   case VersionUpdater::PROMOTE_DISABLED:
 579     state_str = "disabled";
 580     break;
 581   }
 582
 583   web_ui()->CallJavascriptFunction("help.HelpPage.setPromotionState",
 584                                    base::StringValue(state_str));
 585 }
 586 #endif  // defined(OS_MACOSX)
 587
 588 #if defined(OS_CHROMEOS)
 589 void HelpHandler::OnOSVersion(const std::string& version) {
 590   web_ui()->CallJavascriptFunction("help.HelpPage.setOSVersion",
 591                                    base::StringValue(version));
 592 }
 593
 594 void HelpHandler::OnOSFirmware(const std::string& firmware) {
 595   web_ui()->CallJavascriptFunction("help.HelpPage.setOSFirmware",
 596                                    base::StringValue(firmware));
 597 }
 598
 599 void HelpHandler::OnCurrentChannel(const std::string& channel) {
 600   web_ui()->CallJavascriptFunction(
 601       "help.HelpPage.updateCurrentChannel", base::StringValue(channel));
 602 }
 603
 604 void HelpHandler::OnTargetChannel(const std::string& channel) {
 605   web_ui()->CallJavascriptFunction(
 606       "help.HelpPage.updateTargetChannel", base::StringValue(channel));
 607 }
 608
 609 void HelpHandler::OnFCCLabelTextRead(const std::string& text) {
 610   // Remove unnecessary whitespace.
 611   web_ui()->CallJavascriptFunction(
 612       "help.HelpPage.setProductLabelText",
 613       base::StringValue(base::CollapseWhitespaceASCII(text, true)));
 614 }
 615
 616 #endif // defined(OS_CHROMEOS)