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.actions.notinservicemenu.method;
021    
022    import java.lang.reflect.Method;
023    
024    import org.apache.isis.applib.events.VisibilityEvent;
025    import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
026    import org.apache.isis.core.metamodel.adapter.util.AdapterInvokeUtils;
027    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
028    import org.apache.isis.core.metamodel.interactions.VisibilityContext;
029    import org.apache.isis.core.progmodel.facets.actions.notinservicemenu.NotInServiceMenuFacetAbstract;
030    
031    public class NotInServiceMenuFacetMethod extends NotInServiceMenuFacetAbstract {
032    
033        private final Method notInServiceMenuMethod;
034    
035        public NotInServiceMenuFacetMethod(Method notInServiceMenuMethod, final FacetHolder holder) {
036            super(holder);
037            this.notInServiceMenuMethod = notInServiceMenuMethod;
038        }
039    
040        @Override
041        public String hides(VisibilityContext<? extends VisibilityEvent> ic) {
042            ObjectAdapter owningAdapter = ic.getTarget();
043            if (owningAdapter == null) {
044                return null;
045            }
046            final Boolean currentlyHidden = (Boolean) AdapterInvokeUtils.invoke(notInServiceMenuMethod, owningAdapter);
047            return currentlyHidden.booleanValue() ? "notInServiceMenuXxx() method returning true" : null;
048        }
049    
050    }