src/chrome/browser/translate/translate_infobar_delegate.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/translate/translate_infobar_delegate.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/i18n/string_compare.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/prefs/pref_service.h"
  12 #include "chrome/browser/browser_process.h"
  13 #include "chrome/browser/infobars/infobar.h"
  14 #include "chrome/browser/infobars/infobar_service.h"
  15 #include "chrome/browser/profiles/profile.h"
  16 #include "chrome/browser/translate/translate_manager.h"
  17 #include "chrome/browser/translate/translate_tab_helper.h"
  18 #include "components/translate/core/browser/translate_accept_languages.h"
  19 #include "components/translate/core/browser/translate_download_manager.h"
  20 #include "components/translate/core/common/translate_constants.h"
  21 #include "content/public/browser/navigation_details.h"
  22 #include "content/public/browser/navigation_entry.h"
  23 #include "content/public/browser/web_contents.h"
  24 #include "grit/generated_resources.h"
  25 #include "grit/theme_resources.h"
  26 #include "third_party/icu/source/i18n/unicode/coll.h"
  27 #include "ui/base/l10n/l10n_util.h"
  28
  29 namespace {
  30
  31 // Counts used to decide whether infobars should be shown.
  32 // Android and iOS implementations do not offer a drop down (for space reasons),
  33 // so we are more aggressive about showing the shortcut to never translate.
  34 // The "Always Translate" option is always shown on iOS and Android.
  35 #if defined(OS_ANDROID)
  36   const int kAlwaysTranslateMinCount = 1;
  37   const int kNeverTranslateMinCount = 1;
  38 #elif defined(OS_IOS)
  39   // The iOS implementation, like the Android implementation, shows the "Never
  40   // translate" infobar after two denials. There is an offset of one because on
  41   // Android the last event is not counted.
  42   const int kAlwaysTranslateMinCount = 1;
  43   const int kNeverTranslateMinCount = 2;
  44 #else
  45   const int kAlwaysTranslateMinCount = 3;
  46   const int kNeverTranslateMinCount = 3;
  47 #endif
  48
  49 }  // namespace
  50
  51 const size_t TranslateInfoBarDelegate::kNoIndex = TranslateUIDelegate::NO_INDEX;
  52
  53 TranslateInfoBarDelegate::~TranslateInfoBarDelegate() {
  54 }
  55
  56 // static
  57 void TranslateInfoBarDelegate::Create(bool replace_existing_infobar,
  58                                       content::WebContents* web_contents,
  59                                       TranslateTabHelper::TranslateStep step,
  60                                       const std::string& original_language,
  61                                       const std::string& target_language,
  62                                       TranslateErrors::Type error_type,
  63                                       PrefService* prefs) {
  64   // Check preconditions.
  65   if (step != TranslateTabHelper::TRANSLATE_ERROR) {
  66     DCHECK(TranslateDownloadManager::IsSupportedLanguage(target_language));
  67     if (!TranslateDownloadManager::IsSupportedLanguage(original_language)) {
  68       // The original language can only be "unknown" for the "translating"
  69       // infobar, which is the case when the user started a translation from the
  70       // context menu.
  71       DCHECK(step == TranslateTabHelper::TRANSLATING ||
  72              step == TranslateTabHelper::AFTER_TRANSLATE);
  73       DCHECK_EQ(translate::kUnknownLanguageCode, original_language);
  74     }
  75   }
  76
  77   // Do not create the after translate infobar if we are auto translating.
  78   if ((step == TranslateTabHelper::AFTER_TRANSLATE) ||
  79       (step == TranslateTabHelper::TRANSLATING)) {
  80     TranslateTabHelper* translate_tab_helper =
  81         TranslateTabHelper::FromWebContents(web_contents);
  82     if (!translate_tab_helper ||
  83         translate_tab_helper->GetLanguageState().InTranslateNavigation())
  84       return;
  85   }
  86
  87   // Find any existing translate infobar delegate.
  88   InfoBar* old_infobar = NULL;
  89   InfoBarService* infobar_service =
  90       InfoBarService::FromWebContents(web_contents);
  91   TranslateInfoBarDelegate* old_delegate = NULL;
  92   for (size_t i = 0; i < infobar_service->infobar_count(); ++i) {
  93     old_infobar = infobar_service->infobar_at(i);
  94     old_delegate = old_infobar->delegate()->AsTranslateInfoBarDelegate();
  95     if (old_delegate) {
  96       if (!replace_existing_infobar)
  97         return;
  98       break;
  99     }
 100   }
 101
 102   // Add the new delegate.
 103   scoped_ptr<InfoBar> infobar(CreateInfoBar(
 104       scoped_ptr<TranslateInfoBarDelegate>(new TranslateInfoBarDelegate(
 105           web_contents, step, old_delegate, original_language,
 106           target_language, error_type, prefs))));
 107   if (old_delegate)
 108     infobar_service->ReplaceInfoBar(old_infobar, infobar.Pass());
 109   else
 110     infobar_service->AddInfoBar(infobar.Pass());
 111 }
 112
 113
 114 void TranslateInfoBarDelegate::UpdateOriginalLanguageIndex(
 115     size_t language_index) {
 116   ui_delegate_.UpdateOriginalLanguageIndex(language_index);
 117 }
 118
 119 void TranslateInfoBarDelegate::UpdateTargetLanguageIndex(
 120     size_t language_index) {
 121   ui_delegate_.UpdateTargetLanguageIndex(language_index);
 122 }
 123
 124 void TranslateInfoBarDelegate::Translate() {
 125   ui_delegate_.Translate();
 126 }
 127
 128 void TranslateInfoBarDelegate::RevertTranslation() {
 129   ui_delegate_.RevertTranslation();
 130   infobar()->RemoveSelf();
 131 }
 132
 133 void TranslateInfoBarDelegate::ReportLanguageDetectionError() {
 134   TranslateManager::GetInstance()->ReportLanguageDetectionError(
 135       web_contents());
 136 }
 137
 138 void TranslateInfoBarDelegate::TranslationDeclined() {
 139   ui_delegate_.TranslationDeclined(false);
 140 }
 141
 142 bool TranslateInfoBarDelegate::IsTranslatableLanguageByPrefs() {
 143   Profile* profile =
 144       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
 145   Profile* original_profile = profile->GetOriginalProfile();
 146   scoped_ptr<TranslatePrefs> translate_prefs(
 147       TranslateTabHelper::CreateTranslatePrefs(original_profile->GetPrefs()));
 148   TranslateAcceptLanguages* accept_languages =
 149       TranslateTabHelper::GetTranslateAcceptLanguages(original_profile);
 150   return translate_prefs->CanTranslateLanguage(accept_languages,
 151                                                original_language_code());
 152 }
 153
 154 void TranslateInfoBarDelegate::ToggleTranslatableLanguageByPrefs() {
 155   if (ui_delegate_.IsLanguageBlocked()) {
 156     ui_delegate_.SetLanguageBlocked(false);
 157   } else {
 158     ui_delegate_.SetLanguageBlocked(true);
 159     infobar()->RemoveSelf();
 160   }
 161 }
 162
 163 bool TranslateInfoBarDelegate::IsSiteBlacklisted() {
 164   return ui_delegate_.IsSiteBlacklisted();
 165 }
 166
 167 void TranslateInfoBarDelegate::ToggleSiteBlacklist() {
 168   if (ui_delegate_.IsSiteBlacklisted()) {
 169     ui_delegate_.SetSiteBlacklist(false);
 170   } else {
 171     ui_delegate_.SetSiteBlacklist(true);
 172     infobar()->RemoveSelf();
 173   }
 174 }
 175
 176 bool TranslateInfoBarDelegate::ShouldAlwaysTranslate() {
 177   return ui_delegate_.ShouldAlwaysTranslate();
 178 }
 179
 180 void TranslateInfoBarDelegate::ToggleAlwaysTranslate() {
 181   ui_delegate_.SetAlwaysTranslate(!ui_delegate_.ShouldAlwaysTranslate());
 182 }
 183
 184 void TranslateInfoBarDelegate::AlwaysTranslatePageLanguage() {
 185   DCHECK(!ui_delegate_.ShouldAlwaysTranslate());
 186   ui_delegate_.SetAlwaysTranslate(true);
 187   Translate();
 188 }
 189
 190 void TranslateInfoBarDelegate::NeverTranslatePageLanguage() {
 191   DCHECK(!ui_delegate_.IsLanguageBlocked());
 192   ui_delegate_.SetLanguageBlocked(true);
 193     infobar()->RemoveSelf();
 194 }
 195
 196 base::string16 TranslateInfoBarDelegate::GetMessageInfoBarText() {
 197   if (step_ == TranslateTabHelper::TRANSLATING) {
 198     base::string16 target_language_name =
 199         language_name_at(target_language_index());
 200     return l10n_util::GetStringFUTF16(IDS_TRANSLATE_INFOBAR_TRANSLATING_TO,
 201                                       target_language_name);
 202   }
 203
 204   DCHECK_EQ(TranslateTabHelper::TRANSLATE_ERROR, step_);
 205   UMA_HISTOGRAM_ENUMERATION("Translate.ShowErrorInfobar",
 206                             error_type_,
 207                             TranslateErrors::TRANSLATE_ERROR_MAX);
 208   ui_delegate_.OnErrorShown(error_type_);
 209   switch (error_type_) {
 210     case TranslateErrors::NETWORK:
 211       return l10n_util::GetStringUTF16(
 212           IDS_TRANSLATE_INFOBAR_ERROR_CANT_CONNECT);
 213     case TranslateErrors::INITIALIZATION_ERROR:
 214     case TranslateErrors::TRANSLATION_ERROR:
 215       return l10n_util::GetStringUTF16(
 216           IDS_TRANSLATE_INFOBAR_ERROR_CANT_TRANSLATE);
 217     case TranslateErrors::UNKNOWN_LANGUAGE:
 218       return l10n_util::GetStringUTF16(
 219           IDS_TRANSLATE_INFOBAR_UNKNOWN_PAGE_LANGUAGE);
 220     case TranslateErrors::UNSUPPORTED_LANGUAGE:
 221       return l10n_util::GetStringFUTF16(
 222           IDS_TRANSLATE_INFOBAR_UNSUPPORTED_PAGE_LANGUAGE,
 223           language_name_at(target_language_index()));
 224     case TranslateErrors::IDENTICAL_LANGUAGES:
 225       return l10n_util::GetStringFUTF16(
 226           IDS_TRANSLATE_INFOBAR_ERROR_SAME_LANGUAGE,
 227           language_name_at(target_language_index()));
 228     default:
 229       NOTREACHED();
 230       return base::string16();
 231   }
 232 }
 233
 234 base::string16 TranslateInfoBarDelegate::GetMessageInfoBarButtonText() {
 235   if (step_ != TranslateTabHelper::TRANSLATE_ERROR) {
 236     DCHECK_EQ(TranslateTabHelper::TRANSLATING, step_);
 237   } else if ((error_type_ != TranslateErrors::IDENTICAL_LANGUAGES) &&
 238              (error_type_ != TranslateErrors::UNKNOWN_LANGUAGE)) {
 239     return l10n_util::GetStringUTF16(
 240         (error_type_ == TranslateErrors::UNSUPPORTED_LANGUAGE) ?
 241         IDS_TRANSLATE_INFOBAR_REVERT : IDS_TRANSLATE_INFOBAR_RETRY);
 242   }
 243   return base::string16();
 244 }
 245
 246 void TranslateInfoBarDelegate::MessageInfoBarButtonPressed() {
 247   DCHECK_EQ(TranslateTabHelper::TRANSLATE_ERROR, step_);
 248   if (error_type_ == TranslateErrors::UNSUPPORTED_LANGUAGE) {
 249     RevertTranslation();
 250     return;
 251   }
 252   // This is the "Try again..." case.
 253   TranslateManager::GetInstance()->TranslatePage(
 254       web_contents(), original_language_code(), target_language_code());
 255 }
 256
 257 bool TranslateInfoBarDelegate::ShouldShowMessageInfoBarButton() {
 258   return !GetMessageInfoBarButtonText().empty();
 259 }
 260
 261 bool TranslateInfoBarDelegate::ShouldShowNeverTranslateShortcut() {
 262   DCHECK_EQ(TranslateTabHelper::BEFORE_TRANSLATE, step_);
 263   return !web_contents()->GetBrowserContext()->IsOffTheRecord() &&
 264       (prefs_->GetTranslationDeniedCount(original_language_code()) >=
 265           kNeverTranslateMinCount);
 266 }
 267
 268 bool TranslateInfoBarDelegate::ShouldShowAlwaysTranslateShortcut() {
 269   DCHECK_EQ(TranslateTabHelper::BEFORE_TRANSLATE, step_);
 270   return !web_contents()->GetBrowserContext()->IsOffTheRecord() &&
 271       (prefs_->GetTranslationAcceptedCount(original_language_code()) >=
 272           kAlwaysTranslateMinCount);
 273 }
 274
 275 // static
 276 base::string16 TranslateInfoBarDelegate::GetLanguageDisplayableName(
 277     const std::string& language_code) {
 278   return l10n_util::GetDisplayNameForLocale(
 279       language_code, g_browser_process->GetApplicationLocale(), true);
 280 }
 281
 282 // static
 283 void TranslateInfoBarDelegate::GetAfterTranslateStrings(
 284     std::vector<base::string16>* strings,
 285     bool* swap_languages,
 286     bool autodetermined_source_language) {
 287   DCHECK(strings);
 288
 289   if (autodetermined_source_language) {
 290     size_t offset;
 291     base::string16 text = l10n_util::GetStringFUTF16(
 292         IDS_TRANSLATE_INFOBAR_AFTER_MESSAGE_AUTODETERMINED_SOURCE_LANGUAGE,
 293         base::string16(),
 294         &offset);
 295
 296     strings->push_back(text.substr(0, offset));
 297     strings->push_back(text.substr(offset));
 298     return;
 299   }
 300   DCHECK(swap_languages);
 301
 302   std::vector<size_t> offsets;
 303   base::string16 text = l10n_util::GetStringFUTF16(
 304       IDS_TRANSLATE_INFOBAR_AFTER_MESSAGE, base::string16(), base::string16(),
 305       &offsets);
 306   DCHECK_EQ(2U, offsets.size());
 307
 308   *swap_languages = (offsets[0] > offsets[1]);
 309   if (*swap_languages)
 310     std::swap(offsets[0], offsets[1]);
 311
 312   strings->push_back(text.substr(0, offsets[0]));
 313   strings->push_back(text.substr(offsets[0], offsets[1] - offsets[0]));
 314   strings->push_back(text.substr(offsets[1]));
 315 }
 316
 317 TranslateInfoBarDelegate::TranslateInfoBarDelegate(
 318     content::WebContents* web_contents,
 319     TranslateTabHelper::TranslateStep step,
 320     TranslateInfoBarDelegate* old_delegate,
 321     const std::string& original_language,
 322     const std::string& target_language,
 323     TranslateErrors::Type error_type,
 324     PrefService* prefs)
 325     : InfoBarDelegate(),
 326       step_(step),
 327       background_animation_(NONE),
 328       ui_delegate_(web_contents, original_language, target_language),
 329       error_type_(error_type),
 330       prefs_(TranslateTabHelper::CreateTranslatePrefs(prefs)) {
 331   DCHECK_NE((step_ == TranslateTabHelper::TRANSLATE_ERROR),
 332             (error_type_ == TranslateErrors::NONE));
 333
 334   if (old_delegate && (old_delegate->is_error() != is_error()))
 335     background_animation_ = is_error() ? NORMAL_TO_ERROR : ERROR_TO_NORMAL;
 336 }
 337
 338 // TranslateInfoBarDelegate::CreateInfoBar() is implemented in platform-specific
 339 // files.
 340
 341 void TranslateInfoBarDelegate::InfoBarDismissed() {
 342   if (step_ != TranslateTabHelper::BEFORE_TRANSLATE)
 343     return;
 344
 345   // The user closed the infobar without clicking the translate button.
 346   TranslationDeclined();
 347   UMA_HISTOGRAM_BOOLEAN("Translate.DeclineTranslateCloseInfobar", true);
 348 }
 349
 350 int TranslateInfoBarDelegate::GetIconID() const {
 351   return IDR_INFOBAR_TRANSLATE;
 352 }
 353
 354 InfoBarDelegate::Type TranslateInfoBarDelegate::GetInfoBarType() const {
 355   return PAGE_ACTION_TYPE;
 356 }
 357
 358 bool TranslateInfoBarDelegate::ShouldExpire(
 359     const content::LoadCommittedDetails& details) const {
 360   // Note: we allow closing this infobar even if the main frame navigation
 361   // was programmatic and not initiated by the user - crbug.com/70261 .
 362   if (!details.is_navigation_to_different_page() && !details.is_main_frame)
 363     return false;
 364
 365   return InfoBarDelegate::ShouldExpireInternal(details);
 366 }
 367
 368 TranslateInfoBarDelegate*
 369     TranslateInfoBarDelegate::AsTranslateInfoBarDelegate() {
 370   return this;
 371 }