components/permissions/permission_util.h

// Copyright 2015 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 COMPONENTS_PERMISSIONS_PERMISSION_UTIL_H_
#define COMPONENTS_PERMISSIONS_PERMISSION_UTIL_H_

#include <string>

#include "base/macros.h"
#include "build/build_config.h"
#include "components/content_settings/core/common/content_settings.h"
#include "components/content_settings/core/common/content_settings_types.h"
#include "components/permissions/permission_request.h"

namespace content {
enum class PermissionType;
}  // namespace content

namespace permissions {

// This enum backs a UMA histogram, so it must be treated as append-only.
enum class PermissionAction {
  GRANTED = 0,
  DENIED = 1,
  DISMISSED = 2,
  IGNORED = 3,
  REVOKED = 4,
  GRANTED_ONCE = 5,

  // Always keep this at the end.
  NUM,
};

// A utility class for permissions.
class PermissionUtil {
 public:
  // Returns the permission string for the given permission.
  static std::string GetPermissionString(ContentSettingsType);

  // Returns the gesture type corresponding to whether a permission request is
  // made with or without a user gesture.
  static PermissionRequestGestureType GetGestureType(bool user_gesture);

  // Limited conversion of ContentSettingsType to PermissionType. Returns true
  // if the conversion was performed.
  // TODO(timloh): Try to remove this function. Mainly we need to work out how
  // to remove the usage in PermissionUmaUtil, which uses PermissionType as a
  // histogram value to count permission request metrics.
  static bool GetPermissionType(ContentSettingsType type,
                                content::PermissionType* out);

  // Checks whether the given ContentSettingsType is a permission. Use this
  // to determine whether a specific ContentSettingsType is supported by the
  // PermissionManager.
  static bool IsPermission(ContentSettingsType type);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(PermissionUtil);
};

}  // namespace permissions

#endif  // COMPONENTS_PERMISSIONS_PERMISSION_UTIL_H_