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.multiline.annotation;
021
022 import java.lang.annotation.Annotation;
023
024 import org.apache.isis.applib.annotation.MultiLine;
025 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
026 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
027 import org.apache.isis.core.metamodel.facetapi.FeatureType;
028 import org.apache.isis.core.metamodel.facets.AnnotationBasedFacetFactoryAbstract;
029 import org.apache.isis.core.metamodel.facets.multiline.MultiLineFacet;
030
031 public class MultiLineAnnotationOnParameterFacetFactory extends AnnotationBasedFacetFactoryAbstract {
032
033 public MultiLineAnnotationOnParameterFacetFactory() {
034 super(FeatureType.PARAMETERS_ONLY);
035 }
036
037 @Override
038 public void processParams(final ProcessParameterContext processParameterContext) {
039 final Class<?>[] parameterTypes = processParameterContext.getMethod().getParameterTypes();
040 if (processParameterContext.getParamNum() >= parameterTypes.length) {
041 // ignore
042 return;
043 }
044 if (!isString(parameterTypes[processParameterContext.getParamNum()])) {
045 return;
046 }
047 final Annotation[] parameterAnnotations =
048 getParameterAnnotations(processParameterContext.getMethod())[processParameterContext.getParamNum()];
049 for (final Annotation parameterAnnotation : parameterAnnotations) {
050 if (parameterAnnotation instanceof MultiLine) {
051 final MultiLine annotation = (MultiLine) parameterAnnotation;
052 FacetUtil.addFacet(create(annotation, processParameterContext.getFacetHolder()));
053 return;
054 }
055 }
056 }
057
058 private MultiLineFacet create(final MultiLine annotation, final FacetHolder holder) {
059 return (annotation != null) ? new MultiLineFacetAnnotationOnParameter(annotation.numberOfLines(),
060 annotation.preventWrapping(), holder) : null;
061 }
062
063 }