62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
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// Copyright 2012 The Chromium Authors
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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 COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
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#define COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
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#include <stdint.h>
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#include <map>
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#include <string>
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#include "base/observer_list.h"
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#include "base/strings/string_piece.h"
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#include "base/values.h"
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#include "components/prefs/pref_value_map.h"
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#include "components/prefs/prefs_export.h"
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#include "components/prefs/writeable_pref_store.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 COMPONENTS_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore {
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public:
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ValueMapPrefStore();
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ValueMapPrefStore(const ValueMapPrefStore&) = delete;
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ValueMapPrefStore& operator=(const ValueMapPrefStore&) = delete;
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// PrefStore overrides:
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bool GetValue(base::StringPiece key,
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const base::Value** value) const override;
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base::Value::Dict GetValues() const override;
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void AddObserver(PrefStore::Observer* observer) override;
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void RemoveObserver(PrefStore::Observer* observer) override;
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bool HasObservers() const override;
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// WriteablePrefStore overrides:
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void SetValue(const std::string& key,
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base::Value value,
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uint32_t flags) override;
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void RemoveValue(const std::string& key, uint32_t flags) override;
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bool GetMutableValue(const std::string& key, base::Value** value) override;
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void ReportValueChanged(const std::string& key, uint32_t flags) override;
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void SetValueSilently(const std::string& key,
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base::Value value,
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uint32_t flags) override;
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void RemoveValuesByPrefixSilently(const std::string& prefix) override;
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protected:
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~ValueMapPrefStore() override;
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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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base::ObserverList<PrefStore::Observer, true>::Unchecked observers_;
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};
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#endif // COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
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