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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/translate/translate_ui_delegate.h"
#include "base/i18n/string_compare.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/translate/translate_manager.h"
#include "chrome/browser/translate/translate_prefs.h"
#include "chrome/browser/translate/translate_tab_helper.h"
#include "components/translate/common/translate_constants.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/web_contents.h"
#include "third_party/icu/source/i18n/unicode/coll.h"
#include "ui/base/l10n/l10n_util.h"
namespace {
const char kDeclineTranslate[] = "Translate.DeclineTranslate";
const char kRevertTranslation[] = "Translate.RevertTranslation";
const char kPerformTranslate[] = "Translate.Translate";
const char kNeverTranslateLang[] = "Translate.NeverTranslateLang";
const char kNeverTranslateSite[] = "Translate.NeverTranslateSite";
const char kAlwaysTranslateLang[] = "Translate.AlwaysTranslateLang";
const char kModifyOriginalLang[] = "Translate.ModifyOriginalLang";
const char kModifyTargetLang[] = "Translate.ModifyTargetLang";
} // namespace
TranslateUIDelegate::TranslateUIDelegate(content::WebContents* web_contents,
const std::string& original_language,
const std::string& target_language,
TranslateErrors::Type error_type)
: web_contents_(web_contents),
original_language_index_(NO_INDEX),
initial_original_language_index_(NO_INDEX),
target_language_index_(NO_INDEX),
error_type_(error_type) {
DCHECK(web_contents_);
std::vector<std::string> language_codes;
TranslateManager::GetSupportedLanguages(&language_codes);
// Preparing for the alphabetical order in the locale.
UErrorCode error = U_ZERO_ERROR;
std::string locale = g_browser_process->GetApplicationLocale();
icu::Locale loc(locale.c_str());
scoped_ptr<icu::Collator> collator(icu::Collator::createInstance(loc, error));
collator->setStrength(icu::Collator::PRIMARY);
languages_.reserve(language_codes.size());
for (std::vector<std::string>::const_iterator iter = language_codes.begin();
iter != language_codes.end(); ++iter) {
std::string language_code = *iter;
base::string16 language_name = l10n_util::GetDisplayNameForLocale(
language_code, g_browser_process->GetApplicationLocale(), true);
// Insert the language in languages_ in alphabetical order.
std::vector<LanguageNamePair>::iterator iter2;
for (iter2 = languages_.begin(); iter2 != languages_.end(); ++iter2) {
if (base::i18n::CompareString16WithCollator(collator.get(),
language_name, iter2->second) == UCOL_LESS) {
break;
}
}
languages_.insert(iter2, LanguageNamePair(language_code, language_name));
}
for (std::vector<LanguageNamePair>::const_iterator iter = languages_.begin();
iter != languages_.end(); ++iter) {
std::string language_code = iter->first;
if (language_code == original_language) {
original_language_index_ = iter - languages_.begin();
initial_original_language_index_ = original_language_index_;
}
if (language_code == target_language)
target_language_index_ = iter - languages_.begin();
}
Profile* profile =
Profile::FromBrowserContext(web_contents_->GetBrowserContext());
prefs_.reset(new TranslatePrefs(profile->GetPrefs()));
}
TranslateUIDelegate::~TranslateUIDelegate() {
}
size_t TranslateUIDelegate::GetNumberOfLanguages() const {
return languages_.size();
}
size_t TranslateUIDelegate::GetOriginalLanguageIndex() const {
return original_language_index_;
}
void TranslateUIDelegate::UpdateOriginalLanguageIndex(size_t language_index) {
if (original_language_index_ == language_index)
return;
UMA_HISTOGRAM_BOOLEAN(kModifyOriginalLang, true);
original_language_index_ = language_index;
}
size_t TranslateUIDelegate::GetTargetLanguageIndex() const {
return target_language_index_;
}
void TranslateUIDelegate::UpdateTargetLanguageIndex(size_t language_index) {
if (target_language_index_ == language_index)
return;
DCHECK_LT(language_index, GetNumberOfLanguages());
UMA_HISTOGRAM_BOOLEAN(kModifyTargetLang, true);
target_language_index_ = language_index;
}
std::string TranslateUIDelegate::GetLanguageCodeAt(size_t index) const {
DCHECK_LT(index, GetNumberOfLanguages());
return languages_[index].first;
}
string16 TranslateUIDelegate::GetLanguageNameAt(size_t index) const {
if (index == static_cast<size_t>(NO_INDEX))
return base::string16();
DCHECK_LT(index, GetNumberOfLanguages());
return languages_[index].second;
}
std::string TranslateUIDelegate::GetOriginalLanguageCode() const {
return (GetOriginalLanguageIndex() == static_cast<size_t>(NO_INDEX)) ?
translate::kUnknownLanguageCode :
GetLanguageCodeAt(GetOriginalLanguageIndex());
}
std::string TranslateUIDelegate::GetTargetLanguageCode() const {
return GetLanguageCodeAt(GetTargetLanguageIndex());
}
void TranslateUIDelegate::Translate() {
if (!web_contents()->GetBrowserContext()->IsOffTheRecord()) {
prefs_->ResetTranslationDeniedCount(GetOriginalLanguageCode());
prefs_->IncrementTranslationAcceptedCount(GetOriginalLanguageCode());
}
TranslateManager::GetInstance()->TranslatePage(web_contents(),
GetOriginalLanguageCode(),
GetTargetLanguageCode());
UMA_HISTOGRAM_BOOLEAN(kPerformTranslate, true);
}
void TranslateUIDelegate::RevertTranslation() {
TranslateManager::GetInstance()->RevertTranslation(web_contents());
UMA_HISTOGRAM_BOOLEAN(kRevertTranslation, true);
}
void TranslateUIDelegate::TranslationDeclined() {
if (!web_contents()->GetBrowserContext()->IsOffTheRecord()) {
prefs_->ResetTranslationAcceptedCount(GetOriginalLanguageCode());
prefs_->IncrementTranslationDeniedCount(GetOriginalLanguageCode());
}
// Remember that the user declined the translation so as to prevent showing a
// translate infobar for that page again. (TranslateManager initiates
// translations when getting a LANGUAGE_DETERMINED from the page, which
// happens when a load stops. That could happen multiple times, including
// after the user already declined the translation.)
TranslateTabHelper::FromWebContents(web_contents())->
language_state().set_translation_declined(true);
UMA_HISTOGRAM_BOOLEAN(kDeclineTranslate, true);
}
bool TranslateUIDelegate::IsLanguageBlocked() {
return prefs_->IsBlockedLanguage(GetOriginalLanguageCode());
}
void TranslateUIDelegate::SetLanguageBlocked(bool value) {
if (value) {
prefs_->BlockLanguage(GetOriginalLanguageCode());
TranslateTabHelper* translate_tab_helper =
TranslateTabHelper::FromWebContents(web_contents());
DCHECK(translate_tab_helper);
translate_tab_helper->language_state().SetTranslateEnabled(false);
} else {
prefs_->UnblockLanguage(GetOriginalLanguageCode());
}
UMA_HISTOGRAM_BOOLEAN(kNeverTranslateLang, true);
}
bool TranslateUIDelegate::IsSiteBlacklisted() {
std::string host = GetPageHost();
return !host.empty() && prefs_->IsSiteBlacklisted(host);
}
void TranslateUIDelegate::SetSiteBlacklist(bool value) {
std::string host = GetPageHost();
if (host.empty())
return;
if (value) {
prefs_->BlacklistSite(host);
TranslateTabHelper* translate_tab_helper =
TranslateTabHelper::FromWebContents(web_contents());
DCHECK(translate_tab_helper);
translate_tab_helper->language_state().SetTranslateEnabled(false);
} else {
prefs_->RemoveSiteFromBlacklist(host);
}
UMA_HISTOGRAM_BOOLEAN(kNeverTranslateSite, true);
}
bool TranslateUIDelegate::ShouldAlwaysTranslate() {
return prefs_->IsLanguagePairWhitelisted(GetOriginalLanguageCode(),
GetTargetLanguageCode());
}
void TranslateUIDelegate::SetAlwaysTranslate(bool value) {
const std::string& original_lang = GetOriginalLanguageCode();
const std::string& target_lang = GetTargetLanguageCode();
if (value)
prefs_->WhitelistLanguagePair(original_lang, target_lang);
else
prefs_->RemoveLanguagePairFromWhitelist(original_lang, target_lang);
UMA_HISTOGRAM_BOOLEAN(kAlwaysTranslateLang, true);
}
std::string TranslateUIDelegate::GetPageHost() {
content::NavigationEntry* entry =
web_contents()->GetController().GetActiveEntry();
return entry ? entry->GetURL().HostNoBrackets() : std::string();
}
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