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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 <ostream>
- #include <utility>
- #include "base/check_op.h"
- #include "base/containers/contains.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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