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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.
#include "chrome/browser/prefs/tracked/tracked_atomic_preference.h"
#include "base/values.h"
#include "chrome/browser/prefs/pref_hash_store_transaction.h"
#include "chrome/browser/prefs/tracked/tracked_preference_validation_delegate.h"
TrackedAtomicPreference::TrackedAtomicPreference(
const std::string& pref_path,
size_t reporting_id,
size_t reporting_ids_count,
PrefHashFilter::EnforcementLevel enforcement_level,
TrackedPreferenceValidationDelegate* delegate)
: pref_path_(pref_path),
helper_(pref_path, reporting_id, reporting_ids_count, enforcement_level),
delegate_(delegate) {
}
void TrackedAtomicPreference::OnNewValue(
const base::Value* value,
PrefHashStoreTransaction* transaction) const {
transaction->StoreHash(pref_path_, value);
}
bool TrackedAtomicPreference::EnforceAndReport(
base::DictionaryValue* pref_store_contents,
PrefHashStoreTransaction* transaction) const {
const base::Value* value = NULL;
pref_store_contents->Get(pref_path_, &value);
PrefHashStoreTransaction::ValueState value_state =
transaction->CheckValue(pref_path_, value);
helper_.ReportValidationResult(value_state);
TrackedPreferenceHelper::ResetAction reset_action =
helper_.GetAction(value_state);
if (delegate_) {
delegate_->OnAtomicPreferenceValidation(
pref_path_, value, value_state, reset_action);
}
helper_.ReportAction(reset_action);
bool was_reset = false;
if (reset_action == TrackedPreferenceHelper::DO_RESET) {
pref_store_contents->RemovePath(pref_path_, NULL);
was_reset = true;
}
if (value_state != PrefHashStoreTransaction::UNCHANGED) {
// Store the hash for the new value (whether it was reset or not).
const base::Value* new_value = NULL;
pref_store_contents->Get(pref_path_, &new_value);
transaction->StoreHash(pref_path_, new_value);
}
return was_reset;
}
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