chrome/browser/ui/webui/voice_search_ui.cc

   1 // Copyright 2014 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/voice_search_ui.h"
   6
   7 #include <string>
   8
   9 #include "base/command_line.h"
  10 #include "base/files/file_enumerator.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/metrics/field_trial.h"
  13 #include "base/path_service.h"
  14 #include "base/prefs/pref_service.h"
  15 #include "base/strings/string_number_conversions.h"
  16 #include "base/strings/utf_string_conversions.h"
  17 #include "chrome/browser/browser_process.h"
  18 #include "chrome/browser/extensions/extension_service.h"
  19 #include "chrome/browser/plugins/plugin_prefs.h"
  20 #include "chrome/browser/profiles/profile.h"
  21 #include "chrome/browser/search/hotword_service.h"
  22 #include "chrome/browser/search/hotword_service_factory.h"
  23 #include "chrome/browser/ui/app_list/start_page_service.h"
  24 #include "chrome/browser/ui/webui/version_handler.h"
  25 #include "chrome/common/chrome_content_client.h"
  26 #include "chrome/common/chrome_paths.h"
  27 #include "chrome/common/chrome_version_info.h"
  28 #include "chrome/common/extensions/extension_constants.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 "chrome/grit/google_chrome_strings.h"
  34 #include "content/public/browser/browser_thread.h"
  35 #include "content/public/browser/plugin_service.h"
  36 #include "content/public/browser/url_data_source.h"
  37 #include "content/public/browser/web_ui.h"
  38 #include "content/public/browser/web_ui_data_source.h"
  39 #include "content/public/browser/web_ui_message_handler.h"
  40 #include "content/public/common/user_agent.h"
  41 #include "extensions/browser/extension_prefs.h"
  42 #include "extensions/browser/extension_system.h"
  43 #include "extensions/common/extension.h"
  44 #include "grit/browser_resources.h"
  45 #include "ui/base/l10n/l10n_util.h"
  46 #include "v8/include/v8.h"
  47
  48 #if defined(OS_WIN)
  49 #include "base/win/windows_version.h"
  50 #endif
  51
  52 using base::ASCIIToUTF16;
  53 using content::WebUIMessageHandler;
  54
  55 namespace {
  56
  57 content::WebUIDataSource* CreateVoiceSearchUiHtmlSource() {
  58   content::WebUIDataSource* html_source =
  59       content::WebUIDataSource::Create(chrome::kChromeUIVoiceSearchHost);
  60
  61   html_source->AddLocalizedString("loadingMessage",
  62                                   IDS_VOICESEARCH_LOADING_MESSAGE);
  63   html_source->AddLocalizedString("voiceSearchLongTitle",
  64                                   IDS_VOICESEARCH_TITLE_MESSAGE);
  65
  66   html_source->SetJsonPath("strings.js");
  67   html_source->AddResourcePath("about_voicesearch.js",
  68                                IDR_ABOUT_VOICESEARCH_JS);
  69   html_source->SetDefaultResource(IDR_ABOUT_VOICESEARCH_HTML);
  70   return html_source;
  71 }
  72
  73 // Helper functions for collecting a list of key-value pairs that will
  74 // be displayed.
  75 void AddPair16(base::ListValue* list,
  76                const base::string16& key,
  77                const base::string16& value) {
  78   scoped_ptr<base::DictionaryValue> results(new base::DictionaryValue());
  79   results->SetString("key", key);
  80   results->SetString("value", value);
  81   list->Append(results.release());
  82 }
  83
  84 void AddPair(base::ListValue* list,
  85              const base::StringPiece& key,
  86              const base::StringPiece& value) {
  87   AddPair16(list, UTF8ToUTF16(key), UTF8ToUTF16(value));
  88 }
  89
  90 // Generate an empty data-pair which acts as a line break.
  91 void AddLineBreak(base::ListValue* list) {
  92   AddPair(list, "", "");
  93 }
  94
  95 void AddSharedModulePlatformsOnFileThread(base::ListValue* list,
  96                                           const base::FilePath& path,
  97                                           base::Closure callback) {
  98   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
  99
 100   if (!path.empty()) {
 101     // Display available platforms for shared module.
 102     base::FilePath platforms_path = path.AppendASCII("_platform_specific");
 103     base::FileEnumerator enumerator(
 104         platforms_path, false, base::FileEnumerator::DIRECTORIES);
 105     base::string16 files;
 106     for (base::FilePath name = enumerator.Next();
 107          !name.empty();
 108          name = enumerator.Next()) {
 109       files += name.BaseName().LossyDisplayName() + ASCIIToUTF16(" ");
 110     }
 111     AddPair16(list,
 112               ASCIIToUTF16("Shared Module Platforms"),
 113               files.empty() ? ASCIIToUTF16("undefined") : files);
 114     AddLineBreak(list);
 115   }
 116
 117   content::BrowserThread::PostTask(content::BrowserThread::UI,
 118                                    FROM_HERE,
 119                                    callback);
 120 }
 121
 122 ////////////////////////////////////////////////////////////////////////////////
 123 //
 124 // VoiceSearchDomHandler
 125 //
 126 ////////////////////////////////////////////////////////////////////////////////
 127
 128 // The handler for Javascript messages for the about:flags page.
 129 class VoiceSearchDomHandler : public WebUIMessageHandler {
 130  public:
 131   explicit VoiceSearchDomHandler(Profile* profile)
 132       : profile_(profile),
 133         weak_factory_(this) {}
 134
 135   ~VoiceSearchDomHandler() override {}
 136
 137   // WebUIMessageHandler implementation.
 138   void RegisterMessages() override {
 139     web_ui()->RegisterMessageCallback(
 140         "requestVoiceSearchInfo",
 141         base::Bind(&VoiceSearchDomHandler::HandleRequestVoiceSearchInfo,
 142                    base::Unretained(this)));
 143   }
 144
 145  private:
 146   // Callback for the "requestVoiceSearchInfo" message. No arguments.
 147   void HandleRequestVoiceSearchInfo(const base::ListValue* args) {
 148     PopulatePageInformation();
 149   }
 150
 151   void ReturnVoiceSearchInfo(scoped_ptr<base::ListValue> info) {
 152     DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 153     DCHECK(info);
 154     base::DictionaryValue voiceSearchInfo;
 155     voiceSearchInfo.Set("voiceSearchInfo", info.release());
 156     web_ui()->CallJavascriptFunction("returnVoiceSearchInfo", voiceSearchInfo);
 157   }
 158
 159   // Fill in the data to be displayed on the page.
 160   void PopulatePageInformation() {
 161     // Store Key-Value pairs of about-information.
 162     scoped_ptr<base::ListValue> list(new base::ListValue());
 163
 164     // Populate information.
 165     AddOperatingSystemInfo(list.get());
 166     AddAudioInfo(list.get());
 167     AddLanguageInfo(list.get());
 168     AddHotwordInfo(list.get());
 169     AddAppListInfo(list.get());
 170
 171     AddExtensionInfo(extension_misc::kHotwordNewExtensionId,
 172                      "Extension",
 173                      list.get());
 174
 175     AddExtensionInfo(extension_misc::kHotwordSharedModuleId,
 176                      "Shared Module",
 177                      list.get());
 178
 179     base::FilePath path;
 180     extensions::ExtensionSystem* extension_system =
 181         extensions::ExtensionSystem::Get(profile_);
 182     if (extension_system) {
 183       ExtensionService* extension_service =
 184           extension_system->extension_service();
 185       const extensions::Extension* extension =
 186           extension_service->GetExtensionById(
 187               extension_misc::kHotwordSharedModuleId, true);
 188       if (extension)
 189         path = extension->path();
 190     }
 191     base::ListValue* raw_list = list.get();
 192     content::BrowserThread::PostTask(
 193         content::BrowserThread::FILE,
 194         FROM_HERE,
 195         base::Bind(
 196             &AddSharedModulePlatformsOnFileThread,
 197             raw_list,
 198             path,
 199             base::Bind(&VoiceSearchDomHandler::ReturnVoiceSearchInfo,
 200                        weak_factory_.GetWeakPtr(),
 201                        base::Passed(list.Pass()))));
 202   }
 203
 204   // Adds information regarding the system and chrome version info to list.
 205   void AddOperatingSystemInfo(base::ListValue* list)  {
 206     // Obtain the Chrome version info.
 207     chrome::VersionInfo version_info;
 208     AddPair(list,
 209             l10n_util::GetStringUTF8(IDS_PRODUCT_NAME),
 210             version_info.Version() + " (" +
 211             chrome::VersionInfo::GetVersionStringModifier() + ")");
 212
 213     // OS version information.
 214     std::string os_label = version_info.OSType();
 215 #if defined(OS_WIN)
 216     base::win::OSInfo* os = base::win::OSInfo::GetInstance();
 217     switch (os->version()) {
 218       case base::win::VERSION_XP:
 219         os_label += " XP";
 220         break;
 221       case base::win::VERSION_SERVER_2003:
 222         os_label += " Server 2003 or XP Pro 64 bit";
 223         break;
 224       case base::win::VERSION_VISTA:
 225         os_label += " Vista or Server 2008";
 226         break;
 227       case base::win::VERSION_WIN7:
 228         os_label += " 7 or Server 2008 R2";
 229         break;
 230       case base::win::VERSION_WIN8:
 231         os_label += " 8 or Server 2012";
 232         break;
 233       default:
 234         os_label += " UNKNOWN";
 235         break;
 236     }
 237     os_label += " SP" + base::IntToString(os->service_pack().major);
 238
 239     if (os->service_pack().minor > 0)
 240       os_label += "." + base::IntToString(os->service_pack().minor);
 241
 242     if (os->architecture() == base::win::OSInfo::X64_ARCHITECTURE)
 243       os_label += " 64 bit";
 244 #endif
 245     AddPair(list, l10n_util::GetStringUTF8(IDS_ABOUT_VERSION_OS), os_label);
 246
 247     AddLineBreak(list);
 248   }
 249
 250   // Adds information regarding audio to the list.
 251   void AddAudioInfo(base::ListValue* list) {
 252     // NaCl and its associated functions are not available on most mobile
 253     // platforms. ENABLE_EXTENSIONS covers those platforms and hey would not
 254     // allow Hotwording anyways since it is an extension.
 255     std::string nacl_enabled = "not available";
 256 #if defined(ENABLE_EXTENSIONS)
 257     nacl_enabled = "No";
 258     // Determine if NaCl is available.
 259     base::FilePath path;
 260     if (PathService::Get(chrome::FILE_NACL_PLUGIN, &path)) {
 261       content::WebPluginInfo info;
 262       PluginPrefs* plugin_prefs = PluginPrefs::GetForProfile(profile_).get();
 263       if (content::PluginService::GetInstance()->GetPluginInfoByPath(path,
 264                                                                      &info) &&
 265           plugin_prefs->IsPluginEnabled(info)) {
 266         nacl_enabled = "Yes";
 267       }
 268     }
 269 #endif
 270
 271     AddPair(list, "NaCl Enabled", nacl_enabled);
 272
 273     AddPair(list,
 274             "Microphone",
 275             HotwordServiceFactory::IsMicrophoneAvailable() ? "Yes" : "No");
 276
 277     std::string audio_capture = "No";
 278     if (profile_->GetPrefs()->GetBoolean(prefs::kAudioCaptureAllowed))
 279       audio_capture = "Yes";
 280     AddPair(list, "Audio Capture Allowed", audio_capture);
 281
 282     AddLineBreak(list);
 283   }
 284
 285   // Adds information regarding languages to the list.
 286   void AddLanguageInfo(base::ListValue* list) {
 287     std::string locale =
 288 #if defined(OS_CHROMEOS)
 289         // On ChromeOS locale is per-profile.
 290         profile_->GetPrefs()->GetString(prefs::kApplicationLocale);
 291 #else
 292         g_browser_process->GetApplicationLocale();
 293 #endif
 294     AddPair(list, "Current Language", locale);
 295
 296     AddPair(list,
 297             "Hotword Previous Language",
 298             profile_->GetPrefs()->GetString(prefs::kHotwordPreviousLanguage));
 299
 300     AddLineBreak(list);
 301   }
 302
 303   // Adds information specific to the hotword configuration to the list.
 304   void AddHotwordInfo(base::ListValue* list)  {
 305     std::string search_enabled = "No";
 306     if (profile_->GetPrefs()->GetBoolean(prefs::kHotwordSearchEnabled))
 307       search_enabled = "Yes";
 308     AddPair(list, "Hotword Search Enabled", search_enabled);
 309
 310     std::string always_on_search_enabled = "No";
 311     if (profile_->GetPrefs()->GetBoolean(prefs::kHotwordAlwaysOnSearchEnabled))
 312       always_on_search_enabled = "Yes";
 313     AddPair(list, "Always-on Hotword Search Enabled", always_on_search_enabled);
 314
 315     std::string audio_logging_enabled = "No";
 316     HotwordService* hotword_service =
 317         HotwordServiceFactory::GetForProfile(profile_);
 318     if (hotword_service && hotword_service->IsOptedIntoAudioLogging())
 319       audio_logging_enabled = "Yes";
 320     AddPair(list, "Hotword Audio Logging Enabled", audio_logging_enabled);
 321
 322     std::string group = base::FieldTrialList::FindFullName(
 323         hotword_internal::kHotwordFieldTrialName);
 324     AddPair(list, "Field trial", group);
 325
 326     AddLineBreak(list);
 327   }
 328
 329   // Adds information specific to an extension to the list.
 330   void AddExtensionInfo(const std::string& extension_id,
 331                         const std::string& name_prefix,
 332                         base::ListValue* list) {
 333     DCHECK(!name_prefix.empty());
 334     std::string version("undefined");
 335     std::string id("undefined");
 336     base::FilePath path;
 337
 338     extensions::ExtensionSystem* extension_system =
 339         extensions::ExtensionSystem::Get(profile_);
 340     if (extension_system) {
 341       ExtensionService* extension_service =
 342           extension_system->extension_service();
 343       const extensions::Extension* extension =
 344           extension_service->GetExtensionById(extension_id, true);
 345       if (extension) {
 346         id = extension->id();
 347         version = extension->VersionString();
 348         path = extension->path();
 349       }
 350     }
 351     AddPair(list, name_prefix + " Id", id);
 352     AddPair(list, name_prefix + " Version", version);
 353     AddPair16(list,
 354               ASCIIToUTF16(name_prefix + " Path"),
 355               path.empty() ?
 356               ASCIIToUTF16("undefined") : path.LossyDisplayName());
 357
 358     extensions::ExtensionPrefs* extension_prefs =
 359         extensions::ExtensionPrefs::Get(profile_);
 360     int pref_state = -1;
 361     extension_prefs->ReadPrefAsInteger(extension_id, "state", &pref_state);
 362     std::string state;
 363     switch (pref_state) {
 364       case extensions::Extension::DISABLED:
 365         state = "DISABLED";
 366         break;
 367       case extensions::Extension::ENABLED:
 368         state = "ENABLED";
 369         break;
 370       case extensions::Extension::EXTERNAL_EXTENSION_UNINSTALLED:
 371         state = "EXTERNAL_EXTENSION_UNINSTALLED";
 372         break;
 373       default:
 374         state = "undefined";
 375     }
 376
 377     AddPair(list, name_prefix + " State", state);
 378
 379     AddLineBreak(list);
 380   }
 381
 382   // Adds information specific to voice search in the app launcher to the list.
 383   void AddAppListInfo(base::ListValue* list) {
 384 #if defined (ENABLE_APP_LIST)
 385     std::string state = "No Start Page Service";
 386     app_list::StartPageService* start_page_service =
 387         app_list::StartPageService::Get(profile_);
 388     if (start_page_service) {
 389       app_list::SpeechRecognitionState speech_state =
 390           start_page_service->state();
 391       switch (speech_state) {
 392         case app_list::SPEECH_RECOGNITION_OFF:
 393           state = "SPEECH_RECOGNITION_OFF";
 394           break;
 395         case app_list::SPEECH_RECOGNITION_READY:
 396           state = "SPEECH_RECOGNITION_READY";
 397           break;
 398         case app_list::SPEECH_RECOGNITION_HOTWORD_LISTENING:
 399           state = "SPEECH_RECOGNITION_HOTWORD_LISTENING";
 400           break;
 401         case app_list::SPEECH_RECOGNITION_RECOGNIZING:
 402           state = "SPEECH_RECOGNITION_RECOGNIZING";
 403           break;
 404         case app_list::SPEECH_RECOGNITION_IN_SPEECH:
 405           state = "SPEECH_RECOGNITION_IN_SPEECH";
 406           break;
 407         case app_list::SPEECH_RECOGNITION_STOPPING:
 408           state = "SPEECH_RECOGNITION_STOPPING";
 409           break;
 410         case app_list::SPEECH_RECOGNITION_NETWORK_ERROR:
 411           state = "SPEECH_RECOGNITION_NETWORK_ERROR";
 412           break;
 413         default:
 414           state = "undefined";
 415       }
 416     }
 417     AddPair(list, "Start Page State", state);
 418     AddLineBreak(list);
 419 #endif
 420   }
 421
 422   Profile* profile_;
 423   base::WeakPtrFactory<VoiceSearchDomHandler> weak_factory_;
 424
 425   DISALLOW_COPY_AND_ASSIGN(VoiceSearchDomHandler);
 426 };
 427
 428 }  // namespace
 429
 430 ///////////////////////////////////////////////////////////////////////////////
 431 //
 432 // VoiceSearchUI
 433 //
 434 ///////////////////////////////////////////////////////////////////////////////
 435
 436 VoiceSearchUI::VoiceSearchUI(content::WebUI* web_ui)
 437     : content::WebUIController(web_ui) {
 438   Profile* profile = Profile::FromWebUI(web_ui);
 439   web_ui->AddMessageHandler(new VoiceSearchDomHandler(profile));
 440
 441   // Set up the about:voicesearch source.
 442   content::WebUIDataSource::Add(profile, CreateVoiceSearchUiHtmlSource());
 443 }
 444
 445 VoiceSearchUI::~VoiceSearchUI() {}