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.object.membergroups;
021
022import java.util.Arrays;
023import java.util.List;
024
025import org.apache.isis.applib.annotation.MemberGroupLayout.ColumnSpans;
026import org.apache.isis.core.metamodel.facetapi.Facet;
027import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
028import org.apache.isis.core.metamodel.facetapi.FacetHolder;
029import org.apache.isis.core.metamodel.facets.object.membergroups.MemberGroupLayoutFacet;
030
031public abstract class MemberGroupLayoutFacetAbstract extends FacetAbstract implements MemberGroupLayoutFacet {
032
033    private final ColumnSpans columns;
034    private final List<String> left;
035    private final List<String> middle;
036    private final List<String> right;
037
038    public static Class<? extends Facet> type() {
039        return MemberGroupLayoutFacet.class;
040    }
041    
042    protected static List<String> asListWithDefaultGroup(final String[] value) {
043        return value == null || value.length == 0 
044                ? Arrays.asList(MemberGroupLayoutFacet.DEFAULT_GROUP) 
045                : Arrays.asList(value);
046    }
047
048    protected static List<String> asList(final String[] value) {
049        return Arrays.asList(value);
050    }
051    
052    public MemberGroupLayoutFacetAbstract(
053            final ColumnSpans columns,
054            final List<String> left, final List<String> middle, final List<String> right, 
055            FacetHolder holder) {
056        super(type(), holder, Derivation.NOT_DERIVED);
057        this.columns = columns != null? columns: ColumnSpans.asSpans(4,0,0,8);
058        this.left = left;
059        this.middle = middle;
060        this.right = right;
061    }
062
063    @Override
064    public ColumnSpans getColumnSpans() {
065        return columns;
066    }
067
068    @Override
069    public List<String> getLeft() {
070        return left;
071    }
072
073    @Override
074    public List<String> getMiddle() {
075        return middle;
076    }
077
078    @Override
079    public List<String> getRight() {
080        return right;
081    }
082}