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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chromeos/reporting/user_reporting_settings.h"
#include <memory>
#include "base/callback_list.h"
#include "base/functional/bind.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "base/values.h"
#include "chrome/browser/profiles/profile.h"
#include "components/prefs/pref_change_registrar.h"
#include "components/prefs/pref_service.h"
namespace reporting {
UserReportingSettings::UserReportingSettings(base::WeakPtr<Profile> profile)
: profile_(profile) {
if (profile_) {
pref_change_registrar_ = std::make_unique<PrefChangeRegistrar>();
pref_change_registrar_->Init(profile_->GetPrefs());
scoped_profile_observer_.Observe(profile_.get());
}
}
UserReportingSettings::~UserReportingSettings() = default;
base::CallbackListSubscription UserReportingSettings::AddSettingsObserver(
const std::string& path,
base::RepeatingClosure callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(profile_);
CHECK(profile_->GetPrefs()->FindPreference(path));
CHECK(callback);
CHECK(pref_change_registrar_);
auto [iterator, added_element] = settings_observers_.emplace(
path, std::make_unique<base::RepeatingClosureList>());
if (added_element) {
// Initialize the pref change registrar for the specified path.
pref_change_registrar_->Add(
path, base::BindRepeating(&UserReportingSettings::OnPrefChanged,
weak_ptr_factory_.GetWeakPtr(), path));
}
// Add the callback to the pre-existing list.
return iterator->second->Add(callback);
}
bool UserReportingSettings::PrepareTrustedValues(base::OnceClosure callback) {
// We trust user setting values in the pref store, so we return true.
return true;
}
bool UserReportingSettings::GetBoolean(const std::string& path,
bool* out_value) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(profile_);
const auto* const pref_service = profile_->GetPrefs();
if (!pref_service->FindPreference(path) ||
!pref_service->GetValue(path).is_bool()) {
// Invalid path or data type.
return false;
}
*out_value = pref_service->GetBoolean(path);
return true;
}
bool UserReportingSettings::GetInteger(const std::string& path,
int* out_value) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(profile_);
const auto* const pref_service = profile_->GetPrefs();
if (!pref_service->FindPreference(path) ||
!pref_service->GetValue(path).is_int()) {
// Invalid path or data type.
return false;
}
*out_value = pref_service->GetInteger(path);
return true;
}
bool UserReportingSettings::GetList(const std::string& path,
const base::Value::List** out_value) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(profile_);
const auto* const pref_service = profile_->GetPrefs();
if (!pref_service->FindPreference(path) ||
!pref_service->GetValue(path).is_list()) {
// Invalid path or data type.
return false;
}
*out_value = &pref_service->GetList(path);
return true;
}
bool UserReportingSettings::GetReportingEnabled(const std::string& path,
bool* out_value) const {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
CHECK(profile_);
const base::Value::List* list_value;
if (GetBoolean(path, out_value)) {
return true;
} else if (GetList(path, &list_value)) {
*out_value = !list_value->empty();
return true;
}
return false;
}
bool UserReportingSettings::IsObservingSettingsForTest(
const std::string& path) {
if (!pref_change_registrar_) {
return false;
}
return pref_change_registrar_->IsObserved(path);
}
void UserReportingSettings::OnProfileWillBeDestroyed(Profile* profile) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Dispose the change registrar on profile destruction to prevent dangling
// pointer references to the user pref store.
pref_change_registrar_.reset();
scoped_profile_observer_.Reset();
}
void UserReportingSettings::OnPrefChanged(const std::string& path) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto it = settings_observers_.find(path);
CHECK(it != settings_observers_.end());
it->second->Notify();
}
} // namespace reporting
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