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// Copyright 2014 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.
#ifndef COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_PREFS_H_
#define COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_PREFS_H_
#include <string>
#include <vector>
#include "base/gtest_prod_util.h"
#include "url/gurl.h"
class PrefService;
class Profile;
namespace base {
class DictionaryValue;
class ListValue;
}
namespace user_prefs {
class PrefRegistrySyncable;
}
namespace translate {
class TranslateAcceptLanguages;
// The wrapper of PrefService object for Translate.
//
// It is assumed that |prefs_| is alive while this instance is alive.
class TranslatePrefs {
public:
static const char kPrefTranslateLanguageBlacklist[];
static const char kPrefTranslateSiteBlacklist[];
static const char kPrefTranslateWhitelists[];
static const char kPrefTranslateDeniedCount[];
static const char kPrefTranslateAcceptedCount[];
static const char kPrefTranslateBlockedLanguages[];
static const char kPrefTranslateLastDeniedTime[];
static const char kPrefTranslateTooOftenDenied[];
// |preferred_languages_pref| is only used on Chrome OS, other platforms must
// pass NULL.
TranslatePrefs(PrefService* user_prefs,
const char* accept_languages_pref,
const char* preferred_languages_pref);
// Resets the blocked languages list, the sites blacklist, the languages
// whitelist, and the accepted/denied counts.
void ResetToDefaults();
bool IsBlockedLanguage(const std::string& original_language) const;
void BlockLanguage(const std::string& original_language);
void UnblockLanguage(const std::string& original_language);
// Removes a language from the old blacklist. Only used internally for
// diagnostics. Don't use this if there is no special reason.
void RemoveLanguageFromLegacyBlacklist(const std::string& original_language);
bool IsSiteBlacklisted(const std::string& site) const;
void BlacklistSite(const std::string& site);
void RemoveSiteFromBlacklist(const std::string& site);
bool HasWhitelistedLanguagePairs() const;
bool IsLanguagePairWhitelisted(const std::string& original_language,
const std::string& target_language);
void WhitelistLanguagePair(const std::string& original_language,
const std::string& target_language);
void RemoveLanguagePairFromWhitelist(const std::string& original_language,
const std::string& target_language);
// Will return true if at least one language has been blacklisted.
bool HasBlockedLanguages() const;
// Will return true if at least one site has been blacklisted.
bool HasBlacklistedSites() const;
// These methods are used to track how many times the user has denied the
// translation for a specific language. (So we can present a UI to black-list
// that language if the user keeps denying translations).
int GetTranslationDeniedCount(const std::string& language) const;
void IncrementTranslationDeniedCount(const std::string& language);
void ResetTranslationDeniedCount(const std::string& language);
// These methods are used to track how many times the user has accepted the
// translation for a specific language. (So we can present a UI to white-list
// that language if the user keeps accepting translations).
int GetTranslationAcceptedCount(const std::string& language);
void IncrementTranslationAcceptedCount(const std::string& language);
void ResetTranslationAcceptedCount(const std::string& language);
// Update the last time on closing the Translate UI without translation.
void UpdateLastDeniedTime();
// Returns true if translation is denied too often.
bool IsTooOftenDenied() const;
// Resets the prefs of denial state. Only used internally for diagnostics.
void ResetDenialState();
// Gets the language list of the language settings.
void GetLanguageList(std::vector<std::string>* languages);
// Updates the language list of the language settings.
void UpdateLanguageList(const std::vector<std::string>& languages);
bool CanTranslateLanguage(TranslateAcceptLanguages* accept_languages,
const std::string& language);
bool ShouldAutoTranslate(const std::string& original_language,
std::string* target_language);
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
static void MigrateUserPrefs(PrefService* user_prefs,
const char* accept_languages_pref);
private:
friend class TranslatePrefsTest;
FRIEND_TEST_ALL_PREFIXES(TranslatePrefsTest, CreateBlockedLanguages);
FRIEND_TEST_ALL_PREFIXES(TranslatePrefsTest,
CreateBlockedLanguagesNonEnglishUI);
// Merges two language sets to migrate to the language setting UI.
static void CreateBlockedLanguages(
std::vector<std::string>* blocked_languages,
const std::vector<std::string>& blacklisted_languages,
const std::vector<std::string>& accept_languages);
void ClearBlockedLanguages();
void ClearBlacklistedSites();
void ClearWhitelistedLanguagePairs();
bool IsValueBlacklisted(const char* pref_id, const std::string& value) const;
void BlacklistValue(const char* pref_id, const std::string& value);
void RemoveValueFromBlacklist(const char* pref_id, const std::string& value);
bool IsValueInList(const base::ListValue* list,
const std::string& value) const;
bool IsListEmpty(const char* pref_id) const;
bool IsDictionaryEmpty(const char* pref_id) const;
// Path to the preference storing the accept languages.
const std::string accept_languages_pref_;
#if defined(OS_CHROMEOS)
// Path to the preference storing the preferred languages.
// Only used on ChromeOS.
std::string preferred_languages_pref_;
#endif
// Retrieves the dictionary mapping the number of times translation has been
// denied for a language, creating it if necessary.
base::DictionaryValue* GetTranslationDeniedCountDictionary();
// Retrieves the dictionary mapping the number of times translation has been
// accepted for a language, creating it if necessary.
base::DictionaryValue* GetTranslationAcceptedCountDictionary() const;
PrefService* prefs_; // Weak.
DISALLOW_COPY_AND_ASSIGN(TranslatePrefs);
};
} // namespace translate
#endif // COMPONENTS_TRANSLATE_CORE_BROWSER_TRANSLATE_PREFS_H_
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