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.members.hidden.annotation;
021
022import java.util.Properties;
023
024import org.apache.isis.applib.annotation.Hidden;
025import org.apache.isis.core.metamodel.facetapi.FacetHolder;
026import org.apache.isis.core.metamodel.facetapi.FacetUtil;
027import org.apache.isis.core.metamodel.facetapi.FeatureType;
028import org.apache.isis.core.metamodel.facets.Annotations;
029import org.apache.isis.core.metamodel.facets.ContributeeMemberFacetFactory;
030import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
031import org.apache.isis.core.metamodel.facets.hide.HiddenFacet;
032
033public class HiddenForMemberFacetFactory extends FacetFactoryAbstract 
034        implements ContributeeMemberFacetFactory {
035
036    public HiddenForMemberFacetFactory() {
037        super(FeatureType.MEMBERS);
038    }
039
040    @Override
041    public void process(final ProcessMethodContext processMethodContext) {
042        HiddenFacet hiddenFacet = createFromMetadataPropertiesIfPossible(processMethodContext);
043        if(hiddenFacet == null) {
044            hiddenFacet = createFromAnnotationIfPossible(processMethodContext);
045        }
046        // no-op if null
047        FacetUtil.addFacet(hiddenFacet);
048    }
049
050    @Override
051    public void process(ProcessContributeeMemberContext processMemberContext) {
052        HiddenFacet hiddenFacet = createFromMetadataPropertiesIfPossible(processMemberContext);
053        // no-op if null
054        FacetUtil.addFacet(hiddenFacet);
055    }
056    
057    private static HiddenFacet createFromAnnotationIfPossible(final ProcessMethodContext processMethodContext) {
058        final Hidden hiddenAnnotation = Annotations.getAnnotation(processMethodContext.getMethod(), Hidden.class);
059        return hiddenAnnotation != null 
060                ? new HiddenFacetOnMemberAnnotation(hiddenAnnotation.when(), hiddenAnnotation.where(), processMethodContext.getFacetHolder()) 
061                : null;
062    }
063
064    private static HiddenFacet createFromMetadataPropertiesIfPossible(
065            final ProcessContextWithMetadataProperties<? extends FacetHolder> pcwmp) {
066        
067        final FacetHolder holder = pcwmp.getFacetHolder();
068        
069        final Properties properties = pcwmp.metadataProperties("hidden");
070        return properties != null ? new HiddenFacetOnMemberFromProperties(properties, holder) : null;
071    }
072
073
074}