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
020package org.apache.isis.core.progmodel.facets.param.defaults.fromtype;
021
022import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
023import org.apache.isis.core.metamodel.facetapi.FacetHolder;
024import org.apache.isis.core.metamodel.facets.actions.defaults.ActionDefaultsFacetAbstract;
025import org.apache.isis.core.progmodel.facets.object.defaults.DefaultedFacet;
026
027public class ActionParameterDefaultFacetDerivedFromTypeFacets extends ActionDefaultsFacetAbstract {
028
029    private final DefaultedFacet[] defaultedFacets;
030
031    public ActionParameterDefaultFacetDerivedFromTypeFacets(final DefaultedFacet[] defaultedFacets, final FacetHolder holder) {
032        super(holder, Derivation.DERIVED);
033        this.defaultedFacets = defaultedFacets;
034    }
035
036    /**
037     * Return the defaults.
038     * 
039     * <p>
040     * Note that we get the defaults fresh each time in case the defaults might
041     * 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}