001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *
010     *        http://www.apache.org/licenses/LICENSE-2.0
011     *
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License.
018     */
019    
020    package org.apache.isis.core.progmodel.facets.param.defaults.fromtype;
021    
022    import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
024    import org.apache.isis.core.metamodel.facets.actions.defaults.ActionDefaultsFacetAbstract;
025    import org.apache.isis.core.progmodel.facets.object.defaults.DefaultedFacet;
026    
027    public class ActionParameterDefaultFacetDerivedFromTypeFacets extends ActionDefaultsFacetAbstract {
028    
029        private final DefaultedFacet[] defaultedFacets;
030    
031        public ActionParameterDefaultFacetDerivedFromTypeFacets(final DefaultedFacet[] defaultedFacets,
032            final FacetHolder holder) {
033            super(holder, true);
034            this.defaultedFacets = defaultedFacets;
035        }
036    
037        /**
038         * Return the defaults.
039         * 
040         * <p>
041         * Note that we get the defaults fresh each time in case the defaults might conceivably change.
042         */
043        @Override
044        public Object[] getDefaults(final ObjectAdapter inObject) {
045            final Object[] defaults = new Object[defaultedFacets.length];
046            for (int i = 0; i < defaults.length; i++) {
047                if (defaultedFacets[i] != null) {
048                    defaults[i] = defaultedFacets[i].getDefault();
049                }
050            }
051            return defaults;
052        }
053    
054    }