components/translate/core/browser/translate_ui_delegate.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 "components/translate/core/browser/translate_ui_delegate.h"
   6
   7 #include "base/i18n/string_compare.h"
   8 #include "base/metrics/histogram.h"
   9 #include "components/translate/core/browser/language_state.h"
  10 #include "components/translate/core/browser/translate_client.h"
  11 #include "components/translate/core/browser/translate_download_manager.h"
  12 #include "components/translate/core/browser/translate_driver.h"
  13 #include "components/translate/core/browser/translate_manager.h"
  14 #include "components/translate/core/browser/translate_prefs.h"
  15 #include "components/translate/core/common/translate_constants.h"
  16 #include "third_party/icu/source/i18n/unicode/coll.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18
  19 namespace {
  20
  21 const char kDeclineTranslate[] = "Translate.DeclineTranslate";
  22 const char kRevertTranslation[] = "Translate.RevertTranslation";
  23 const char kPerformTranslate[] = "Translate.Translate";
  24 const char kNeverTranslateLang[] = "Translate.NeverTranslateLang";
  25 const char kNeverTranslateSite[] = "Translate.NeverTranslateSite";
  26 const char kAlwaysTranslateLang[] = "Translate.AlwaysTranslateLang";
  27 const char kModifyOriginalLang[] = "Translate.ModifyOriginalLang";
  28 const char kModifyTargetLang[] = "Translate.ModifyTargetLang";
  29 const char kDeclineTranslateDismissUI[] = "Translate.DeclineTranslateDismissUI";
  30 const char kShowErrorUI[] = "Translate.ShowErrorUI";
  31
  32 }  // namespace
  33
  34 namespace translate {
  35
  36 TranslateUIDelegate::TranslateUIDelegate(
  37     const base::WeakPtr<TranslateManager>& translate_manager,
  38     const std::string& original_language,
  39     const std::string& target_language)
  40     : translate_driver_(
  41           translate_manager->translate_client()->GetTranslateDriver()),
  42       translate_manager_(translate_manager),
  43       original_language_index_(kNoIndex),
  44       initial_original_language_index_(kNoIndex),
  45       target_language_index_(kNoIndex) {
  46   DCHECK(translate_driver_);
  47   DCHECK(translate_manager_);
  48
  49   std::vector<std::string> language_codes;
  50   TranslateDownloadManager::GetSupportedLanguages(&language_codes);
  51
  52   // Preparing for the alphabetical order in the locale.
  53   UErrorCode error = U_ZERO_ERROR;
  54   std::string locale =
  55       TranslateDownloadManager::GetInstance()->application_locale();
  56   icu::Locale loc(locale.c_str());
  57   scoped_ptr<icu::Collator> collator(icu::Collator::createInstance(loc, error));
  58   collator->setStrength(icu::Collator::PRIMARY);
  59
  60   languages_.reserve(language_codes.size());
  61   for (std::vector<std::string>::const_iterator iter = language_codes.begin();
  62        iter != language_codes.end();
  63        ++iter) {
  64     std::string language_code = *iter;
  65
  66     base::string16 language_name =
  67         l10n_util::GetDisplayNameForLocale(language_code, locale, true);
  68     // Insert the language in languages_ in alphabetical order.
  69     std::vector<LanguageNamePair>::iterator iter2;
  70     for (iter2 = languages_.begin(); iter2 != languages_.end(); ++iter2) {
  71       if (base::i18n::CompareString16WithCollator(
  72               collator.get(), language_name, iter2->second) == UCOL_LESS) {
  73         break;
  74       }
  75     }
  76     languages_.insert(iter2, LanguageNamePair(language_code, language_name));
  77   }
  78   for (std::vector<LanguageNamePair>::const_iterator iter = languages_.begin();
  79        iter != languages_.end();
  80        ++iter) {
  81     std::string language_code = iter->first;
  82     if (language_code == original_language) {
  83       original_language_index_ = iter - languages_.begin();
  84       initial_original_language_index_ = original_language_index_;
  85     }
  86     if (language_code == target_language)
  87       target_language_index_ = iter - languages_.begin();
  88   }
  89
  90   prefs_ = translate_manager_->translate_client()->GetTranslatePrefs();
  91 }
  92
  93 TranslateUIDelegate::~TranslateUIDelegate() {}
  94
  95 void TranslateUIDelegate::OnErrorShown(TranslateErrors::Type error_type) {
  96   DCHECK_LE(TranslateErrors::NONE, error_type);
  97   DCHECK_LT(error_type, TranslateErrors::TRANSLATE_ERROR_MAX);
  98
  99   if (error_type == TranslateErrors::NONE)
 100     return;
 101
 102   UMA_HISTOGRAM_ENUMERATION(
 103       kShowErrorUI, error_type, TranslateErrors::TRANSLATE_ERROR_MAX);
 104 }
 105
 106 const LanguageState& TranslateUIDelegate::GetLanguageState() {
 107   return translate_manager_->GetLanguageState();
 108 }
 109
 110 size_t TranslateUIDelegate::GetNumberOfLanguages() const {
 111   return languages_.size();
 112 }
 113
 114 size_t TranslateUIDelegate::GetOriginalLanguageIndex() const {
 115   return original_language_index_;
 116 }
 117
 118 void TranslateUIDelegate::UpdateOriginalLanguageIndex(size_t language_index) {
 119   if (original_language_index_ == language_index)
 120     return;
 121
 122   UMA_HISTOGRAM_BOOLEAN(kModifyOriginalLang, true);
 123   original_language_index_ = language_index;
 124 }
 125
 126 size_t TranslateUIDelegate::GetTargetLanguageIndex() const {
 127   return target_language_index_;
 128 }
 129
 130 void TranslateUIDelegate::UpdateTargetLanguageIndex(size_t language_index) {
 131   if (target_language_index_ == language_index)
 132     return;
 133
 134   DCHECK_LT(language_index, GetNumberOfLanguages());
 135   UMA_HISTOGRAM_BOOLEAN(kModifyTargetLang, true);
 136   target_language_index_ = language_index;
 137 }
 138
 139 std::string TranslateUIDelegate::GetLanguageCodeAt(size_t index) const {
 140   DCHECK_LT(index, GetNumberOfLanguages());
 141   return languages_[index].first;
 142 }
 143
 144 base::string16 TranslateUIDelegate::GetLanguageNameAt(size_t index) const {
 145   if (index == kNoIndex)
 146     return base::string16();
 147   DCHECK_LT(index, GetNumberOfLanguages());
 148   return languages_[index].second;
 149 }
 150
 151 std::string TranslateUIDelegate::GetOriginalLanguageCode() const {
 152   return (GetOriginalLanguageIndex() == kNoIndex) ?
 153       translate::kUnknownLanguageCode :
 154       GetLanguageCodeAt(GetOriginalLanguageIndex());
 155 }
 156
 157 std::string TranslateUIDelegate::GetTargetLanguageCode() const {
 158   return GetLanguageCodeAt(GetTargetLanguageIndex());
 159 }
 160
 161 void TranslateUIDelegate::Translate() {
 162   if (!translate_driver_->IsOffTheRecord()) {
 163     prefs_->ResetTranslationDeniedCount(GetOriginalLanguageCode());
 164     prefs_->IncrementTranslationAcceptedCount(GetOriginalLanguageCode());
 165   }
 166
 167   if (translate_manager_) {
 168     translate_manager_->TranslatePage(
 169         GetOriginalLanguageCode(), GetTargetLanguageCode(), false);
 170     UMA_HISTOGRAM_BOOLEAN(kPerformTranslate, true);
 171   }
 172 }
 173
 174 void TranslateUIDelegate::RevertTranslation() {
 175   if (translate_manager_) {
 176     translate_manager_->RevertTranslation();
 177     UMA_HISTOGRAM_BOOLEAN(kRevertTranslation, true);
 178   }
 179 }
 180
 181 void TranslateUIDelegate::TranslationDeclined(bool explicitly_closed) {
 182   if (!translate_driver_->IsOffTheRecord()) {
 183     prefs_->ResetTranslationAcceptedCount(GetOriginalLanguageCode());
 184     prefs_->IncrementTranslationDeniedCount(GetOriginalLanguageCode());
 185     prefs_->UpdateLastDeniedTime();
 186   }
 187
 188   // Remember that the user declined the translation so as to prevent showing a
 189   // translate UI for that page again.  (TranslateManager initiates translations
 190   // when getting a LANGUAGE_DETERMINED from the page, which happens when a load
 191   // stops. That could happen multiple times, including after the user already
 192   // declined the translation.)
 193   if (translate_manager_) {
 194     translate_manager_->GetLanguageState().set_translation_declined(true);
 195     UMA_HISTOGRAM_BOOLEAN(kDeclineTranslate, true);
 196   }
 197
 198   if (!explicitly_closed)
 199     UMA_HISTOGRAM_BOOLEAN(kDeclineTranslateDismissUI, true);
 200 }
 201
 202 bool TranslateUIDelegate::IsLanguageBlocked() {
 203   return prefs_->IsBlockedLanguage(GetOriginalLanguageCode());
 204 }
 205
 206 void TranslateUIDelegate::SetLanguageBlocked(bool value) {
 207   if (value) {
 208     prefs_->BlockLanguage(GetOriginalLanguageCode());
 209     if (translate_manager_) {
 210       translate_manager_->GetLanguageState().SetTranslateEnabled(false);
 211     }
 212   } else {
 213     prefs_->UnblockLanguage(GetOriginalLanguageCode());
 214   }
 215
 216   UMA_HISTOGRAM_BOOLEAN(kNeverTranslateLang, true);
 217 }
 218
 219 bool TranslateUIDelegate::IsSiteBlacklisted() {
 220   std::string host = GetPageHost();
 221   return !host.empty() && prefs_->IsSiteBlacklisted(host);
 222 }
 223
 224 void TranslateUIDelegate::SetSiteBlacklist(bool value) {
 225   std::string host = GetPageHost();
 226   if (host.empty())
 227     return;
 228
 229   if (value) {
 230     prefs_->BlacklistSite(host);
 231     if (translate_manager_) {
 232       translate_manager_->GetLanguageState().SetTranslateEnabled(false);
 233     }
 234   } else {
 235     prefs_->RemoveSiteFromBlacklist(host);
 236   }
 237
 238   UMA_HISTOGRAM_BOOLEAN(kNeverTranslateSite, true);
 239 }
 240
 241 bool TranslateUIDelegate::ShouldAlwaysTranslate() {
 242   return prefs_->IsLanguagePairWhitelisted(GetOriginalLanguageCode(),
 243                                            GetTargetLanguageCode());
 244 }
 245
 246 void TranslateUIDelegate::SetAlwaysTranslate(bool value) {
 247   const std::string& original_lang = GetOriginalLanguageCode();
 248   const std::string& target_lang = GetTargetLanguageCode();
 249   if (value)
 250     prefs_->WhitelistLanguagePair(original_lang, target_lang);
 251   else
 252     prefs_->RemoveLanguagePairFromWhitelist(original_lang, target_lang);
 253
 254   UMA_HISTOGRAM_BOOLEAN(kAlwaysTranslateLang, true);
 255 }
 256
 257 std::string TranslateUIDelegate::GetPageHost() {
 258   if (!translate_driver_->HasCurrentPage())
 259     return std::string();
 260   return translate_driver_->GetActiveURL().HostNoBrackets();
 261 }
 262
 263 }  // namespace translate