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// Copyright 2014 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.
#ifndef COMPONENTS_SUGGESTIONS_SUGGESTIONS_STORE_H_
#define COMPONENTS_SUGGESTIONS_SUGGESTIONS_STORE_H_
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/clock.h"
#include "components/suggestions/proto/suggestions.pb.h"
class PrefService;
namespace user_prefs {
class PrefRegistrySyncable;
} // namespace user_prefs
namespace suggestions {
// A helper class for reading and writing the suggestions to the profile's
// preference file.
class SuggestionsStore {
public:
explicit SuggestionsStore(PrefService* profile_prefs);
virtual ~SuggestionsStore();
// Loads the suggestion data from the profile's preferences into
// |suggestions|. If there is a problem with loading, the pref value is
// cleared, false is returned and |suggestions| is cleared. If successful,
// |suggestions| will contain the loaded data and true is returned.
virtual bool LoadSuggestions(SuggestionsProfile* suggestions);
// Stores the provided |suggestions| to the profile's preferences, using
// a base64 encoding of its protobuf serialization.
virtual bool StoreSuggestions(const SuggestionsProfile& suggestions);
// Clears any suggestion data from the profile's preferences.
virtual void ClearSuggestions();
// Register SuggestionsStore related prefs in the Profile prefs.
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
void SetClockForTesting(scoped_ptr<base::Clock> clock);
protected:
// Test seam. For simplicity of mock creation.
SuggestionsStore();
private:
// The pref service used to persist the suggestions data.
PrefService* pref_service_;
// Can be set for testing.
scoped_ptr<base::Clock> clock_;
DISALLOW_COPY_AND_ASSIGN(SuggestionsStore);
// Filters expired suggestions.
void FilterExpiredSuggestions(SuggestionsProfile* suggestions);
};
} // namespace suggestions
#endif // COMPONENTS_SUGGESTIONS_SUGGESTIONS_STORE_H_
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