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.object.defaults;
021    
022    import org.apache.isis.applib.adapters.DefaultsProvider;
023    import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
024    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
025    import org.apache.isis.core.metamodel.runtimecontext.DependencyInjector;
026    
027    public class DefaultedFacetUsingDefaultsProvider extends FacetAbstract implements DefaultedFacet {
028    
029        private final DefaultsProvider<?> defaultsProvider;
030        private final DependencyInjector dependencyInjector;
031    
032        public DefaultedFacetUsingDefaultsProvider(final DefaultsProvider<?> parser, final FacetHolder holder,
033            final DependencyInjector dependencyInjector) {
034            super(DefaultedFacet.class, holder, false);
035            this.defaultsProvider = parser;
036            this.dependencyInjector = dependencyInjector;
037        }
038    
039        @Override
040        protected String toStringValues() {
041            getDependencyInjector().injectDependenciesInto(defaultsProvider);
042            return defaultsProvider.toString();
043        }
044    
045        @Override
046        public Object getDefault() {
047            getDependencyInjector().injectDependenciesInto(defaultsProvider);
048            return defaultsProvider.getDefaultValue();
049        }
050    
051        // //////////////////////////////////////////////////////
052        // Dependencies (from constructor)
053        // //////////////////////////////////////////////////////
054    
055        public DependencyInjector getDependencyInjector() {
056            return dependencyInjector;
057        }
058    
059    }