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// Copyright (c) 2011 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_CHROMEOS_CROS_SETTINGS_PROVIDER_H_
#define CHROME_BROWSER_CHROMEOS_CROS_SETTINGS_PROVIDER_H_
#include <string>
#include "base/callback.h"
namespace base {
class Value;
}
namespace chromeos {
class CrosSettingsProvider {
public:
virtual ~CrosSettingsProvider() {}
// Sets |in_value| to given |path| in cros settings.
void Set(const std::string& path, const base::Value& in_value);
// Gets settings value of given |path| to |out_value|.
virtual const base::Value* Get(const std::string& path) const = 0;
// Starts a fetch from the trusted store for the value of |path| if not loaded
// yet. It will call the |callback| function upon completion if a new fetch
// was needed in which case the return value is false. Else it will return
// true and won't call the |callback|.
virtual bool GetTrusted(const std::string& path,
const base::Closure& callback) const = 0;
// Gets the namespace prefix provided by this provider
virtual bool HandlesSetting(const std::string& path) const = 0;
private:
// Does the real job for Set().
virtual void DoSet(const std::string& path,
const base::Value& in_value) = 0;
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_CROS_SETTINGS_PROVIDER_H_
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