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// Copyright (c) 2012 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_COMMON_EXTENSIONS_MANIFEST_FEATURE_PROVIDER_H_
#define CHROME_COMMON_EXTENSIONS_MANIFEST_FEATURE_PROVIDER_H_
#pragma once
#include <set>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "chrome/common/extensions/feature.h"
namespace extensions {
// Wrapper for the _manifest_features.json file, which vends Feature objects
// describing the features declared there.
class ManifestFeatureProvider {
public:
// Create an instance for an arbitrary hunk of JSON. This is typically used
// during tests.
explicit ManifestFeatureProvider(scoped_ptr<DictionaryValue> root);
~ManifestFeatureProvider();
// Gets an instance for the _manifest_features.json file that is baked into
// Chrome as a resource.
static ManifestFeatureProvider* GetDefaultInstance();
// Returns all features described by this instance.
std::set<std::string> GetAllFeatureNames() const;
// Gets the feature |feature_name|, if it exists.
scoped_ptr<Feature> GetFeature(const std::string& feature_name) const;
private:
scoped_ptr<DictionaryValue> root_;
};
} // namespace extensions
#endif // CHROME_COMMON_EXTENSIONS_MANIFEST_FEATURE_PROVIDER_H_
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