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// Copyright (c) 2012 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/prefs/pref_registry.h"
#include <utility>
#include "base/check_op.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "components/prefs/default_pref_store.h"
#include "components/prefs/pref_store.h"
PrefRegistry::PrefRegistry()
: defaults_(base::MakeRefCounted<DefaultPrefStore>()) {}
PrefRegistry::~PrefRegistry() {
}
uint32_t PrefRegistry::GetRegistrationFlags(
const std::string& pref_name) const {
const auto& it = registration_flags_.find(pref_name);
return it != registration_flags_.end() ? it->second : NO_REGISTRATION_FLAGS;
}
scoped_refptr<PrefStore> PrefRegistry::defaults() {
return defaults_.get();
}
PrefRegistry::const_iterator PrefRegistry::begin() const {
return defaults_->begin();
}
PrefRegistry::const_iterator PrefRegistry::end() const {
return defaults_->end();
}
void PrefRegistry::SetDefaultPrefValue(const std::string& pref_name,
base::Value value) {
const base::Value* current_value = nullptr;
DCHECK(defaults_->GetValue(pref_name, ¤t_value))
<< "Setting default for unregistered pref: " << pref_name;
DCHECK(value.type() == current_value->type())
<< "Wrong type for new default: " << pref_name;
defaults_->ReplaceDefaultValue(pref_name, std::move(value));
}
void PrefRegistry::SetDefaultForeignPrefValue(const std::string& path,
base::Value default_value,
uint32_t flags) {
auto erased = foreign_pref_keys_.erase(path);
DCHECK_EQ(1u, erased);
RegisterPreference(path, std::move(default_value), flags);
}
void PrefRegistry::RegisterPreference(const std::string& path,
base::Value default_value,
uint32_t flags) {
base::Value::Type orig_type = default_value.type();
DCHECK(orig_type != base::Value::Type::NONE &&
orig_type != base::Value::Type::BINARY) <<
"invalid preference type: " << orig_type;
DCHECK(!defaults_->GetValue(path, nullptr))
<< "Trying to register a previously registered pref: " << path;
DCHECK(!base::Contains(registration_flags_, path))
<< "Trying to register a previously registered pref: " << path;
defaults_->SetDefaultValue(path, std::move(default_value));
if (flags != NO_REGISTRATION_FLAGS)
registration_flags_[path] = flags;
OnPrefRegistered(path, flags);
}
void PrefRegistry::RegisterForeignPref(const std::string& path) {
bool inserted = foreign_pref_keys_.insert(path).second;
DCHECK(inserted);
}
void PrefRegistry::OnPrefRegistered(const std::string& path,
uint32_t flags) {}
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