src/chrome/browser/translate/translate_browser_metrics.cc

   1 // Copyright 2013 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_browser_metrics.h"
   6
   7 #include <string>
   8
   9 #include "base/basictypes.h"
  10 #include "base/metrics/histogram.h"
  11 #include "base/metrics/sparse_histogram.h"
  12 #include "chrome/browser/language_usage_metrics.h"
  13
  14 namespace {
  15
  16 // Constant string values to indicate UMA names. All entries should have
  17 // a corresponding index in MetricsNameIndex and an entry in |kMetricsEntries|.
  18 const char kTranslateInitiationStatus[] =
  19     "Translate.InitiationStatus";
  20 const char kTranslateReportLanguageDetectionError[] =
  21     "Translate.ReportLanguageDetectionError";
  22 const char kTranslateLocalesOnDisabledByPrefs[] =
  23     "Translate.LocalesOnDisabledByPrefs";
  24 const char kTranslateUndisplayableLanguage[] =
  25     "Translate.UndisplayableLanguage";
  26 const char kTranslateUnsupportedLanguageAtInitiation[] =
  27     "Translate.UnsupportedLanguageAtInitiation";
  28
  29 struct MetricsEntry {
  30   TranslateBrowserMetrics::MetricsNameIndex index;
  31   const char* const name;
  32 };
  33
  34 // This entry table should be updated when new UMA items are added.
  35 const MetricsEntry kMetricsEntries[] = {
  36   { TranslateBrowserMetrics::UMA_INITIATION_STATUS,
  37     kTranslateInitiationStatus },
  38   { TranslateBrowserMetrics::UMA_LANGUAGE_DETECTION_ERROR,
  39     kTranslateReportLanguageDetectionError },
  40   { TranslateBrowserMetrics::UMA_LOCALES_ON_DISABLED_BY_PREFS,
  41     kTranslateLocalesOnDisabledByPrefs },
  42   { TranslateBrowserMetrics::UMA_UNDISPLAYABLE_LANGUAGE,
  43     kTranslateUndisplayableLanguage },
  44   { TranslateBrowserMetrics::UMA_UNSUPPORTED_LANGUAGE_AT_INITIATION,
  45     kTranslateUnsupportedLanguageAtInitiation },
  46 };
  47
  48 COMPILE_ASSERT(arraysize(kMetricsEntries) == TranslateBrowserMetrics::UMA_MAX,
  49                arraysize_of_kMetricsEntries_should_be_UMA_MAX);
  50
  51 }  // namespace
  52
  53 namespace TranslateBrowserMetrics {
  54
  55 void ReportInitiationStatus(InitiationStatusType type) {
  56   UMA_HISTOGRAM_ENUMERATION(kTranslateInitiationStatus,
  57                             type,
  58                             INITIATION_STATUS_MAX);
  59 }
  60
  61 void ReportLanguageDetectionError() {
  62   UMA_HISTOGRAM_BOOLEAN(kTranslateReportLanguageDetectionError, true);
  63 }
  64
  65 void ReportLocalesOnDisabledByPrefs(const std::string& locale) {
  66   UMA_HISTOGRAM_SPARSE_SLOWLY(kTranslateLocalesOnDisabledByPrefs,
  67                               LanguageUsageMetrics::ToLanguageCode(locale));
  68 }
  69
  70 void ReportUndisplayableLanguage(const std::string& language) {
  71   int language_code = LanguageUsageMetrics::ToLanguageCode(language);
  72   UMA_HISTOGRAM_SPARSE_SLOWLY(kTranslateUndisplayableLanguage,
  73                               language_code);
  74 }
  75
  76 void ReportUnsupportedLanguageAtInitiation(const std::string& language) {
  77   int language_code = LanguageUsageMetrics::ToLanguageCode(language);
  78   UMA_HISTOGRAM_SPARSE_SLOWLY(kTranslateUnsupportedLanguageAtInitiation,
  79                               language_code);
  80 }
  81
  82 const char* GetMetricsName(MetricsNameIndex index) {
  83   for (size_t i = 0; i < arraysize(kMetricsEntries); ++i) {
  84     if (kMetricsEntries[i].index == index)
  85       return kMetricsEntries[i].name;
  86   }
  87   NOTREACHED();
  88   return NULL;
  89 }
  90
  91 }  // namespace TranslateBrowserMetrics