components/offline_pages/core/offline_page_feature.cc

// Copyright 2015 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 "components/offline_pages/core/offline_page_feature.h"

#include <string>

#include "base/command_line.h"
#include "base/feature_list.h"
#include "base/metrics/field_trial_params.h"

namespace {
// This flag significantly shortens the delay between WebContentsObserver events
// and SnapshotController's StartSnapshot calls. The purpose is to speed up
// integration tests.
const char kOfflinePagesUseTestingSnapshotDelay[] =
    "short-offline-page-snapshot-delay-for-test";
}  // namespace

namespace offline_pages {

const base::Feature kOffliningRecentPagesFeature{
    "OfflineRecentPages", base::FEATURE_ENABLED_BY_DEFAULT};

const base::Feature kOfflinePagesCTFeature{"OfflinePagesCT",
                                           base::FEATURE_ENABLED_BY_DEFAULT};

const base::Feature kOfflinePagesLivePageSharingFeature{
    "OfflinePagesLivePageSharing", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesLoadSignalCollectingFeature{
    "OfflinePagesLoadSignalCollecting", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesRenovationsFeature{
    "OfflinePagesRenovations", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesResourceBasedSnapshotFeature{
    "OfflinePagesResourceBasedSnapshot", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kPrefetchingOfflinePagesFeature{
    "OfflinePagesPrefetching", base::FEATURE_ENABLED_BY_DEFAULT};

const base::Feature kOfflinePagesCTV2Feature{"OfflinePagesCTV2",
                                             base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesDescriptiveFailStatusFeature{
    "OfflinePagesDescriptiveFailStatus", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesDescriptivePendingStatusFeature{
    "OfflinePagesDescriptivePendingStatus", base::FEATURE_ENABLED_BY_DEFAULT};

const base::Feature kOfflinePagesInDownloadHomeOpenInCctFeature{
    "OfflinePagesInDownloadHomeOpenInCct", base::FEATURE_ENABLED_BY_DEFAULT};

const base::Feature kOfflinePagesCTSuppressNotificationsFeature{
    "OfflinePagesCTSuppressNotifications", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflinePagesShowAlternateDinoPageFeature{
    "OfflinePagesShowAlternateDinoPage", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflineIndicatorFeature{"OfflineIndicator",
                                             base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOfflineIndicatorAlwaysHttpProbeFeature{
    "OfflineIndicatorAlwaysHttpProbe", base::FEATURE_DISABLED_BY_DEFAULT};

const base::Feature kOnTheFlyMhtmlHashComputationFeature{
    "OnTheFlyMhtmlHashComputation", base::FEATURE_DISABLED_BY_DEFAULT};

const char kPrefetchingOfflinePagesExperimentsOption[] = "exp";

bool IsOffliningRecentPagesEnabled() {
  return base::FeatureList::IsEnabled(kOffliningRecentPagesFeature);
}

bool IsOfflinePagesCTEnabled() {
  return base::FeatureList::IsEnabled(kOfflinePagesCTFeature);
}

bool IsOfflinePagesLivePageSharingEnabled() {
  return base::FeatureList::IsEnabled(kOfflinePagesLivePageSharingFeature);
}

bool IsPrefetchingOfflinePagesEnabled() {
  return IsOfflinePagesEnabled() &&
         base::FeatureList::IsEnabled(kPrefetchingOfflinePagesFeature);
}

bool IsOfflinePagesLoadSignalCollectingEnabled() {
  return base::FeatureList::IsEnabled(kOfflinePagesLoadSignalCollectingFeature);
}

bool IsOfflinePagesRenovationsEnabled() {
  return base::FeatureList::IsEnabled(kOfflinePagesRenovationsFeature);
}

bool IsOfflinePagesResourceBasedSnapshotEnabled() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesResourceBasedSnapshotFeature);
}

bool ShouldUseTestingSnapshotDelay() {
  base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
  return cl->HasSwitch(kOfflinePagesUseTestingSnapshotDelay);
}

bool IsOfflinePagesCTV2Enabled() {
  return base::FeatureList::IsEnabled(kOfflinePagesCTV2Feature);
}

bool IsOfflinePagesDescriptiveFailStatusEnabled() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesDescriptiveFailStatusFeature);
}

bool IsOfflinePagesDescriptivePendingStatusEnabled() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesDescriptivePendingStatusFeature);
}

bool ShouldOfflinePagesInDownloadHomeOpenInCct() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesInDownloadHomeOpenInCctFeature);
}

bool IsOfflinePagesSuppressNotificationsEnabled() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesCTSuppressNotificationsFeature);
}

bool ShouldShowAlternateDinoPage() {
  return base::FeatureList::IsEnabled(
      kOfflinePagesShowAlternateDinoPageFeature);
}

std::string GetPrefetchingOfflinePagesExperimentTag() {
  return base::GetFieldTrialParamValueByFeature(
      kPrefetchingOfflinePagesFeature,
      kPrefetchingOfflinePagesExperimentsOption);
}

bool IsOfflineIndicatorFeatureEnabled() {
  return IsOfflinePagesEnabled() &&
         base::FeatureList::IsEnabled(kOfflineIndicatorFeature);
}

bool IsOfflineIndicatorAlwaysHttpProbeEnabled() {
  return base::FeatureList::IsEnabled(kOfflineIndicatorAlwaysHttpProbeFeature);
}

bool IsOnTheFlyMhtmlHashComputationEnabled() {
  return base::FeatureList::IsEnabled(kOnTheFlyMhtmlHashComputationFeature);
}

bool IsOfflinePagesEnabled() {
#if defined(DISABLE_OFFLINE_PAGES_TOUCHLESS)
  return false;
#else
  return true;
#endif  // defined(DISABLE_OFFLINE_PAGES_TOUCHLESS)
}

}  // namespace offline_pages