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      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/translate/translate_service.h"
      6 
      7 #include "base/command_line.h"
      8 #include "base/logging.h"
      9 #include "base/prefs/pref_service.h"
     10 #include "base/strings/string_split.h"
     11 #include "chrome/browser/browser_process.h"
     12 #include "chrome/common/chrome_switches.h"
     13 #include "chrome/common/pref_names.h"
     14 #include "components/translate/core/browser/translate_download_manager.h"
     15 #include "components/translate/core/browser/translate_manager.h"
     16 #include "content/public/common/url_constants.h"
     17 #include "url/gurl.h"
     18 
     19 #if defined(OS_CHROMEOS)
     20 #include "chrome/browser/chromeos/file_manager/app_id.h"
     21 #include "extensions/common/constants.h"
     22 #endif
     23 
     24 namespace {
     25 // The singleton instance of TranslateService.
     26 TranslateService* g_translate_service = NULL;
     27 }
     28 
     29 TranslateService::TranslateService() {
     30   resource_request_allowed_notifier_.Init(this);
     31 }
     32 
     33 TranslateService::~TranslateService() {}
     34 
     35 // static
     36 void TranslateService::Initialize() {
     37   if (g_translate_service)
     38     return;
     39 
     40   g_translate_service = new TranslateService;
     41   // Initialize the allowed state for resource requests.
     42   g_translate_service->OnResourceRequestsAllowed();
     43   TranslateDownloadManager* download_manager =
     44       TranslateDownloadManager::GetInstance();
     45   download_manager->set_request_context(
     46       g_browser_process->system_request_context());
     47   download_manager->set_application_locale(
     48       g_browser_process->GetApplicationLocale());
     49 }
     50 
     51 // static
     52 void TranslateService::Shutdown(bool cleanup_pending_fetcher) {
     53   TranslateDownloadManager* download_manager =
     54       TranslateDownloadManager::GetInstance();
     55   if (cleanup_pending_fetcher) {
     56     download_manager->Shutdown();
     57   } else {
     58     // This path is only used by browser tests.
     59     download_manager->set_request_context(NULL);
     60   }
     61 }
     62 
     63 // static
     64 void TranslateService::InitializeForTesting() {
     65   if (!g_translate_service) {
     66     TranslateService::Initialize();
     67   } else {
     68     TranslateDownloadManager::GetInstance()->ResetForTesting();
     69     g_translate_service->OnResourceRequestsAllowed();
     70   }
     71 }
     72 
     73 // static
     74 void TranslateService::ShutdownForTesting() {
     75   TranslateDownloadManager::GetInstance()->Shutdown();
     76 }
     77 
     78 void TranslateService::OnResourceRequestsAllowed() {
     79   TranslateLanguageList* language_list =
     80       TranslateDownloadManager::GetInstance()->language_list();
     81   if (!language_list) {
     82     NOTREACHED();
     83     return;
     84   }
     85 
     86   language_list->SetResourceRequestsAllowed(
     87       resource_request_allowed_notifier_.ResourceRequestsAllowed());
     88 }
     89 
     90 // static
     91 bool TranslateService::IsTranslateBubbleEnabled() {
     92 #if defined(USE_AURA)
     93   return true;
     94 #elif defined(OS_MACOSX)
     95   // The bubble UX is experimental on Mac OS X.
     96   return CommandLine::ForCurrentProcess()->HasSwitch(
     97       switches::kEnableTranslateNewUX);
     98 #else
     99   // The bubble UX is not implemented on other platforms.
    100   return false;
    101 #endif
    102 }
    103 
    104 // static
    105 std::string TranslateService::GetTargetLanguage(PrefService* prefs) {
    106   std::vector<std::string> accept_languages_list;
    107   base::SplitString(prefs->GetString(prefs::kAcceptLanguages), ',',
    108                     &accept_languages_list);
    109   return TranslateManager::GetTargetLanguage(accept_languages_list);
    110 }
    111 
    112 // static
    113 bool TranslateService::IsTranslatableURL(const GURL& url) {
    114   // A URLs is translatable unless it is one of the following:
    115   // - empty (can happen for popups created with window.open(""))
    116   // - an internal URL (chrome:// and others)
    117   // - the devtools (which is considered UI)
    118   // - Chrome OS file manager extension
    119   // - an FTP page (as FTP pages tend to have long lists of filenames that may
    120   //   confuse the CLD)
    121   return !url.is_empty() && !url.SchemeIs(content::kChromeUIScheme) &&
    122          !url.SchemeIs(content::kChromeDevToolsScheme) &&
    123 #if defined(OS_CHROMEOS)
    124          !(url.SchemeIs(extensions::kExtensionScheme) &&
    125            url.DomainIs(file_manager::kFileManagerAppId)) &&
    126 #endif
    127          !url.SchemeIs(url::kFtpScheme);
    128 }
    129