extensions/common/features/complex_feature.h

// Copyright 2014 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 EXTENSIONS_COMMON_FEATURES_COMPLEX_FEATURE_H_
#define EXTENSIONS_COMMON_FEATURES_COMPLEX_FEATURE_H_

#include <set>
#include <string>

#include "base/memory/scoped_vector.h"
#include "extensions/common/extension.h"
#include "extensions/common/features/feature.h"
#include "extensions/common/manifest.h"

namespace extensions {

// A ComplexFeature is composed of one or many Features. A ComplexFeature
// is available if any Feature (i.e. permission rule) that composes it is
// available, but not if only some combination of Features is available.
class ComplexFeature : public Feature {
 public:
  typedef ScopedVector<Feature> FeatureList;

  explicit ComplexFeature(scoped_ptr<FeatureList> features);
  ~ComplexFeature() override;

  // extensions::Feature:
  Availability IsAvailableToManifest(const std::string& extension_id,
                                     Manifest::Type type,
                                     Manifest::Location location,
                                     int manifest_version,
                                     Platform platform) const override;

  Availability IsAvailableToContext(const Extension* extension,
                                    Context context,
                                    const GURL& url,
                                    Platform platform) const override;

  bool IsIdInBlacklist(const std::string& extension_id) const override;
  bool IsIdInWhitelist(const std::string& extension_id) const override;

 protected:
  // extensions::Feature:
  std::string GetAvailabilityMessage(AvailabilityResult result,
                                     Manifest::Type type,
                                     const GURL& url,
                                     Context context) const override;

  bool IsInternal() const override;

 private:
  FeatureList features_;

  DISALLOW_COPY_AND_ASSIGN(ComplexFeature);
};

}  // namespace extensions

#endif  // EXTENSIONS_COMMON_FEATURES_COMPLEX_FEATURE_H_