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.applib.services.confview;
  
  import java.util.Set;
  
  /**
   * Returns the configuration properties (as view models) such that they can
   * be rendered into the UI (in the Wicket Viewer, under the "Configuration"
   * menu).
   *
   * <p>
   *     This is the backing service used by {@link ConfigurationMenu}.
   * </p>
   *
   * @since 2.0 {@index}
   */
  public interface ConfigurationViewService {
  
      enum Scope {
          ENV,
          PRIMARY,
          SECONDARY,
      }
  
      /**
       * Returns all properties, each as an instance of {@link ConfigurationProperty} (a view model).
       * Mask sensitive values if required.
       */
      Set<ConfigurationProperty> getConfigurationProperties(Scope scope);
  
  }
  