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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_LANGUAGE_CORE_BROWSER_ULP_METRICS_LOGGER_H_
#define COMPONENTS_LANGUAGE_CORE_BROWSER_ULP_METRICS_LOGGER_H_
#include <string>
#include <vector>
namespace language {
const char kInitiationLanguageCountHistogram[] =
"LanguageUsage.ULP.Initiation.Count";
const char kInitiationUILanguageInULPHistogram[] =
"LanguageUsage.ULP.Initiation.ChromeUILanguageInULP";
const char kInitiationTranslateTargetInULPHistogram[] =
"LanguageUsage.ULP.Initiation.TranslateTargetInULP";
const char kInitiationTopAcceptLanguageInULPHistogram[] =
"LanguageUsage.ULP.Initiation.TopAcceptLanguageInULP";
const char kInitiationAcceptLanguagesULPOverlapHistogram[] =
"LanguageUsage.ULP.Initiation.AcceptLanguagesULPOverlap.Base";
const char kInitiationNeverLanguagesMissingFromULP[] =
"LanguageUsage.ULP.Initiation.NeverLanguagesMissingFromULP";
const char kInitiationNeverLanguagesMissingFromULPCount[] =
"LanguageUsage.ULP.Initiation.NeverLanguagesMissingFromULP.Count";
const char kInitiationAcceptLanguagesPageLanguageOverlapHistogram[] =
"LanguagesUsage.ULP.Initiation.AcceptLanguagesPageLanguageOverlap.Base";
const char kInitiationPageLanguagesMissingFromULPHistogram[] =
"LanguagesUsage.ULP.Initiation.PageLanguagesMissingFromULP";
const char kInitiationPageLanguagesMissingFromULPCountHistogram[] =
"LanguagesUsage.ULP.Initiation.PageLanguagesMissingFromULP.Count";
// Keep up to date with ULPLanguageStatus in
// //tools/metrics/histograms/enums.xml.
enum class ULPLanguageStatus {
kTopULPLanguageExactMatch = 0,
kNonTopULPLanguageExactMatch = 1,
kLanguageNotInULP = 2,
kTopULPLanguageBaseMatch = 3,
kNonTopULPLanguageBaseMatch = 4,
kLanguageEmpty = 5,
kMaxValue = kLanguageEmpty,
};
// ULPMetricsLogger abstracts the UMA histograms populated by the User Language
// Profile (ULP) integration.
class ULPMetricsLogger {
public:
ULPMetricsLogger() = default;
virtual ~ULPMetricsLogger() = default;
// Record the number of languages in the user's LanguageProfile at ULP init.
virtual void RecordInitiationLanguageCount(int count);
// Record whether the UI language exists in the user's LanguageProfile at
// init.
virtual void RecordInitiationUILanguageInULP(ULPLanguageStatus status);
// Record whether the user's translate target language exists in their
// LanguageProfile at init.
virtual void RecordInitiationTranslateTargetInULP(ULPLanguageStatus status);
// Record whether the user's top accept language exists in their
// LanguageProfile at init.
virtual void RecordInitiationTopAcceptLanguageInULP(ULPLanguageStatus status);
// Record the ratio of ULP languages s in Accept Languages : total ULP
// languages at init.
virtual void RecordInitiationAcceptLanguagesULPOverlap(
int overlap_ratio_percent);
// Record each Never Translate language that does not have a base match with a
// ULP language.
virtual void RecordInitiationNeverLanguagesMissingFromULP(
const std::vector<std::string>& never_languages);
// Record the count of Never Translate languages that do not have a base match
// with a ULP language.
virtual void RecordInitiationNeverLanguagesMissingFromULPCount(int count);
virtual void RecordInitiationAcceptLanguagesPageLanguageOverlap(
int overlap_ratio_percent);
virtual void RecordInitiationPageLanguagesMissingFromULP(
const std::vector<std::string>& page_languages);
virtual void RecordInitiationPageLanguagesMissingFromULPCount(int count);
// Returns an enum that indicates whether `language` is present in
// `ulp_languages` and, if so, whether it was the first entry.
static ULPLanguageStatus DetermineLanguageStatus(
const std::string& language,
const std::vector<std::string>& ulp_languages);
// Returns a number from 0-100 that indicates the ratio of ulp_languages that
// are present in accept_languages. Only language bases are compared (e.g
// pt-BR == pt-MZ).
static int LanguagesOverlapRatio(
const std::vector<std::string> accept_languages,
const std::vector<std::string> ulp_languages);
// Returns a vector with languages that do not have a ULP base language match.
static std::vector<std::string> RemoveULPLanguages(
const std::vector<std::string> languages,
const std::vector<std::string> ulp_languages);
};
} // namespace language
#endif // COMPONENTS_LANGUAGE_CORE_BROWSER_ULP_METRICS_LOGGER_H_
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