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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_FEATURES_SIMPLE_FEATURE_PROVIDER_H_
#define CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_PROVIDER_H_
#include <set>
#include <string>
#include "base/memory/linked_ptr.h"
#include "base/values.h"
#include "chrome/common/extensions/features/feature.h"
#include "chrome/common/extensions/features/feature_provider.h"
namespace extensions {
// Reads Features out of a simple JSON file description.
class SimpleFeatureProvider : public FeatureProvider {
public:
typedef Feature*(*FeatureFactory)();
// Creates a new SimpleFeatureProvider. Pass null to |factory| to have the
// provider create plain old Feature instances.
SimpleFeatureProvider(DictionaryValue* root, FeatureFactory factory);
virtual ~SimpleFeatureProvider();
// Gets an instance for the _manifest_features.json file that is baked into
// Chrome as a resource.
static SimpleFeatureProvider* GetManifestFeatures();
// Gets an instance for the _permission_features.json file that is baked into
// Chrome as a resource.
static SimpleFeatureProvider* GetPermissionFeatures();
// Returns all features described by this instance.
std::set<std::string> GetAllFeatureNames() const;
// Gets the feature |feature_name|, if it exists.
virtual Feature* GetFeature(const std::string& feature_name) OVERRIDE;
private:
typedef std::map<std::string, linked_ptr<Feature> > FeatureMap;
FeatureMap features_;
FeatureFactory factory_;
};
} // namespace extensions
#endif // CHROME_COMMON_EXTENSIONS_FEATURES_SIMPLE_FEATURE_PROVIDER_H_
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