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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_split_preference.h"
#include <vector>
#include "base/logging.h"
#include "base/values.h"
#include "chrome/browser/prefs/pref_hash_store_transaction.h"
#include "chrome/browser/prefs/tracked/tracked_preference_validation_delegate.h"
TrackedSplitPreference::TrackedSplitPreference(
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 TrackedSplitPreference::OnNewValue(
const base::Value* value,
PrefHashStoreTransaction* transaction) const {
const base::DictionaryValue* dict_value = NULL;
if (value && !value->GetAsDictionary(&dict_value)) {
NOTREACHED();
return;
}
transaction->StoreSplitHash(pref_path_, dict_value);
}
bool TrackedSplitPreference::EnforceAndReport(
base::DictionaryValue* pref_store_contents,
PrefHashStoreTransaction* transaction) const {
base::DictionaryValue* dict_value = NULL;
if (!pref_store_contents->GetDictionary(pref_path_, &dict_value) &&
pref_store_contents->Get(pref_path_, NULL)) {
// There should be a dictionary or nothing at |pref_path_|.
NOTREACHED();
return false;
}
std::vector<std::string> invalid_keys;
PrefHashStoreTransaction::ValueState value_state =
transaction->CheckSplitValue(pref_path_, dict_value, &invalid_keys);
if (value_state == PrefHashStoreTransaction::CHANGED)
helper_.ReportSplitPreferenceChangedCount(invalid_keys.size());
helper_.ReportValidationResult(value_state);
TrackedPreferenceHelper::ResetAction reset_action =
helper_.GetAction(value_state);
if (delegate_) {
delegate_->OnSplitPreferenceValidation(
pref_path_, dict_value, invalid_keys, value_state, reset_action);
}
helper_.ReportAction(reset_action);
bool was_reset = false;
if (reset_action == TrackedPreferenceHelper::DO_RESET) {
if (value_state == PrefHashStoreTransaction::CHANGED) {
DCHECK(!invalid_keys.empty());
for (std::vector<std::string>::const_iterator it =
invalid_keys.begin(); it != invalid_keys.end(); ++it) {
dict_value->Remove(*it, NULL);
}
} else {
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::DictionaryValue* new_dict_value = NULL;
pref_store_contents->GetDictionary(pref_path_, &new_dict_value);
transaction->StoreSplitHash(pref_path_, new_dict_value);
}
return was_reset;
}
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