1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_
6 #define CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_
12 #include "base/memory/linked_ptr.h"
13 #include "base/values.h"
14 #include "chrome/common/extensions/features/simple_feature.h"
15 #include "extensions/common/features/feature_provider.h"
17 namespace extensions {
19 // Reads Features out of a simple JSON file description.
20 class BaseFeatureProvider : public FeatureProvider {
22 typedef SimpleFeature*(*FeatureFactory)();
24 // Creates a new BaseFeatureProvider. Pass null to |factory| to have the
25 // provider create plain old Feature instances.
26 BaseFeatureProvider(const base::DictionaryValue& root,
27 FeatureFactory factory);
28 virtual ~BaseFeatureProvider();
30 // Gets a feature provider for a specific feature type, like "permission".
31 static FeatureProvider* GetByName(const std::string& name);
33 // Gets the feature |feature_name|, if it exists.
34 virtual Feature* GetFeature(const std::string& feature_name) OVERRIDE;
35 virtual Feature* GetParent(Feature* feature) OVERRIDE;
37 virtual const std::vector<std::string>& GetAllFeatureNames() OVERRIDE;
40 typedef std::map<std::string, linked_ptr<Feature> > FeatureMap;
43 std::vector<std::string> feature_names_;
45 FeatureFactory factory_;
48 } // namespace extensions
50 #endif // CHROME_COMMON_EXTENSIONS_FEATURES_BASE_FEATURE_PROVIDER_H_