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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 "base/prefs/pref_registry.h"
#include "base/logging.h"
#include "base/prefs/default_pref_store.h"
#include "base/prefs/pref_store.h"
#include "base/values.h"
PrefRegistry::PrefRegistry()
: defaults_(new DefaultPrefStore()) {
}
PrefRegistry::~PrefRegistry() {
}
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 char* pref_name,
base::Value* value) {
DCHECK(value);
const base::Value* current_value = NULL;
DCHECK(defaults_->GetValue(pref_name, ¤t_value))
<< "Setting default for unregistered pref: " << pref_name;
DCHECK(value->IsType(current_value->GetType()))
<< "Wrong type for new default: " << pref_name;
defaults_->ReplaceDefaultValue(pref_name, make_scoped_ptr(value));
}
void PrefRegistry::RegisterPreference(const char* path,
base::Value* default_value) {
base::Value::Type orig_type = default_value->GetType();
DCHECK(orig_type != base::Value::TYPE_NULL &&
orig_type != base::Value::TYPE_BINARY) <<
"invalid preference type: " << orig_type;
DCHECK(!defaults_->GetValue(path, NULL)) <<
"Trying to register a previously registered pref: " << path;
defaults_->SetDefaultValue(path, make_scoped_ptr(default_value));
}
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