54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/prefs/default_pref_store.h"
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#include "base/logging.h"
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using base::Value;
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DefaultPrefStore::DefaultPrefStore() {}
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bool DefaultPrefStore::GetValue(const std::string& key,
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const Value** result) const {
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return prefs_.GetValue(key, result);
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}
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void DefaultPrefStore::AddObserver(PrefStore::Observer* observer) {
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observers_.AddObserver(observer);
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}
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void DefaultPrefStore::RemoveObserver(PrefStore::Observer* observer) {
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observers_.RemoveObserver(observer);
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}
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size_t DefaultPrefStore::NumberOfObservers() const {
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return observers_.size();
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}
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void DefaultPrefStore::SetDefaultValue(const std::string& key,
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scoped_ptr<Value> value) {
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DCHECK(!GetValue(key, NULL));
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prefs_.SetValue(key, value.release());
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}
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void DefaultPrefStore::ReplaceDefaultValue(const std::string& key,
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scoped_ptr<Value> value) {
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const Value* old_value = NULL;
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GetValue(key, &old_value);
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bool notify = !old_value->Equals(value.get());
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prefs_.SetValue(key, value.release());
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if (notify)
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FOR_EACH_OBSERVER(Observer, observers_, OnPrefValueChanged(key));
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}
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DefaultPrefStore::const_iterator DefaultPrefStore::begin() const {
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return prefs_.begin();
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}
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DefaultPrefStore::const_iterator DefaultPrefStore::end() const {
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return prefs_.end();
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}
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DefaultPrefStore::~DefaultPrefStore() {}
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