1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "base/prefs/pref_registry.h" 6 7#include "base/logging.h" 8#include "base/prefs/default_pref_store.h" 9#include "base/prefs/pref_store.h" 10#include "base/values.h" 11 12PrefRegistry::PrefRegistry() 13 : defaults_(new DefaultPrefStore()) { 14} 15 16PrefRegistry::~PrefRegistry() { 17} 18 19scoped_refptr<PrefStore> PrefRegistry::defaults() { 20 return defaults_.get(); 21} 22 23PrefRegistry::const_iterator PrefRegistry::begin() const { 24 return defaults_->begin(); 25} 26 27PrefRegistry::const_iterator PrefRegistry::end() const { 28 return defaults_->end(); 29} 30 31void PrefRegistry::SetDefaultPrefValue(const char* pref_name, 32 base::Value* value) { 33 DCHECK(value); 34 if (DCHECK_IS_ON()) { 35 const base::Value* current_value = NULL; 36 DCHECK(defaults_->GetValue(pref_name, ¤t_value)) 37 << "Setting default for unregistered pref: " << pref_name; 38 DCHECK(value->IsType(current_value->GetType())) 39 << "Wrong type for new default: " << pref_name; 40 } 41 42 defaults_->ReplaceDefaultValue(pref_name, make_scoped_ptr(value)); 43} 44 45void PrefRegistry::RegisterPreference(const char* path, 46 base::Value* default_value) { 47 base::Value::Type orig_type = default_value->GetType(); 48 DCHECK(orig_type != base::Value::TYPE_NULL && 49 orig_type != base::Value::TYPE_BINARY) << 50 "invalid preference type: " << orig_type; 51 DCHECK(!defaults_->GetValue(path, NULL)) << 52 "Trying to register a previously registered pref: " << path; 53 54 defaults_->SetDefaultValue(path, make_scoped_ptr(default_value)); 55} 56