content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache License, Version 2.0 (the
   *  "License"); you may not use this file except in compliance
   *  with the License.  You may obtain a copy of the License at
   *
   *        http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing,
   *  software distributed under the License is distributed on an
   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   *  KIND, either express or implied.  See the License for the
   *  specific language governing permissions and limitations
   *  under the License.
   */
  package org.apache.causeway.core.security.authorization;
  
  import org.apache.causeway.applib.Identifier;
  import org.apache.causeway.applib.services.iactnlayer.InteractionContext;
  
  /**
   * Represents a mechanism to evaluate whether the current user (as represented
   * by {@link InteractionContext} can either view or invoke the domain object
   * feature (as represented by {@link Identifier}.
   *
   * @apiNote This is a framework internal class and so does not constitute a formal API.
   *
   * @since 1.x but refactored in v2 {@index}
   */
  public interface Authorizor {
  
      /**
       * Whether the current {@link InteractionContext user} can view the
       * domain object feature (represented by {@link Identifier}).
       */
      boolean isVisible(InteractionContext authentication, Identifier identifier);
  
      /**
       * Whether the current {@link InteractionContext user} can invoke the
       * domain object feature (represented by {@link Identifier}).
       *
       * <p>
       *     If this methods returns <code>false</code> then the feature will be
       *     greyed out/disabled.
       * </p>
       */
      boolean isUsable(InteractionContext authentication, Identifier identifier);
  
  }
  