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.metamodel.interactions;
  
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.interactions.val.ParamValidityContext;
  import org.apache.causeway.core.metamodel.interactions.val.PropertyModifyContext;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  
  /**
   * Implemented by some of the {@link InteractionContext} subclasses, making it
   * easier for facets to process multiple at the same time.
   *
   * <p>
   * Where this is used most often is for {@link PropertyModifyContext} and
   * {@link ParamValidityContext}, where a {@link Facet} (such as
   * <tt>MandatoryFacet</tt> or <tt>MaxLengthFacet</tt>) would want to perform the
   * same checks on the {@link #proposed()} value/argument.
   */
  public interface ProposedHolder {
  
      /**
       * The (proposed) new value for a property or parameter.
       */
      ManagedObject proposed();
  }
  