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// Copyright 2017 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 CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_GENERATED_PREFS_H_
#define CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_GENERATED_PREFS_H_
#include <memory>
#include <string>
#include <unordered_map>
#include "base/macros.h"
#include "chrome/browser/extensions/api/settings_private/generated_pref.h"
#include "chrome/browser/extensions/api/settings_private/prefs_util_enums.h"
#include "components/keyed_service/core/keyed_service.h"
class Profile;
namespace base {
class Value;
}
namespace extensions {
namespace api {
namespace settings_private {
struct PrefObject;
} // namespace settings_private
} // namespace api
namespace settings_private {
// This is a "store" for virtual preferences that exist only for
// api::settings_private. These are used to control Chrome Settings UI elements
// not directly attached to user preferences.
class GeneratedPrefs : public KeyedService {
public:
// Preference name to implementation map.
using PrefsMap =
std::unordered_map<std::string, std::unique_ptr<GeneratedPref>>;
explicit GeneratedPrefs(Profile* profile);
~GeneratedPrefs() override;
// Returns true if preference is supported.
bool HasPref(const std::string& pref_name) const;
// Returns fully populated PrefObject or nullptr if not supported.
std::unique_ptr<api::settings_private::PrefObject> GetPref(
const std::string& pref_name) const;
// Updates preference value.
SetPrefResult SetPref(const std::string& pref_name, const base::Value* value);
// Modify list of observers for the given preference.
void AddObserver(const std::string& pref_name,
GeneratedPref::Observer* observer);
void RemoveObserver(const std::string& pref_name,
GeneratedPref::Observer* observer);
private:
// Returns preference implementation or nullptr if not found.
GeneratedPref* FindPrefImpl(const std::string& pref_name) const;
// Known preference map.
PrefsMap prefs_;
DISALLOW_COPY_AND_ASSIGN(GeneratedPrefs);
};
} // namespace settings_private
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_API_SETTINGS_PRIVATE_GENERATED_PREFS_H_
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