53 lines
1.7 KiB
C
53 lines
1.7 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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#ifndef BASE_PREFS_VALUE_MAP_PREF_STORE_H_
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#define BASE_PREFS_VALUE_MAP_PREF_STORE_H_
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#include <map>
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#include <string>
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#include "base/basictypes.h"
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#include "base/observer_list.h"
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#include "base/prefs/base_prefs_export.h"
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#include "base/prefs/pref_store.h"
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#include "base/prefs/pref_value_map.h"
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// A basic PrefStore implementation that uses a simple name-value map for
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// storing the preference values.
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class BASE_PREFS_EXPORT ValueMapPrefStore : public PrefStore {
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public:
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ValueMapPrefStore();
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// PrefStore overrides:
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virtual bool GetValue(const std::string& key,
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const base::Value** value) const OVERRIDE;
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virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE;
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virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE;
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virtual size_t NumberOfObservers() const OVERRIDE;
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protected:
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virtual ~ValueMapPrefStore();
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// Store a |value| for |key| in the store. Also generates an notification if
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// the value changed. Assumes ownership of |value|, which must be non-NULL.
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void SetValue(const std::string& key, base::Value* value);
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// Remove the value for |key| from the store. Sends a notification if there
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// was a value to be removed.
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void RemoveValue(const std::string& key);
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// Notify observers about the initialization completed event.
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void NotifyInitializationCompleted();
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private:
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PrefValueMap prefs_;
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ObserverList<PrefStore::Observer, true> observers_;
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DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore);
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};
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#endif // BASE_PREFS_VALUE_MAP_PREF_STORE_H_
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