| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.fo.expr; |
| |
| import org.apache.fop.datatypes.Numeric; |
| import org.apache.fop.fo.Constants; |
| import org.apache.fop.fo.PropertyList; |
| import org.apache.fop.fo.flow.ListItem; |
| import org.apache.fop.fo.properties.Property; |
| |
| /** |
| * Class corresponding to the body-start Property Value function. See Sec. |
| * 5.10.4 of the XSL-FO spec. |
| */ |
| public class BodyStartFunction extends FunctionBase { |
| |
| /** {@inheritDoc} */ |
| public int getRequiredArgsCount() { |
| return 0; |
| } |
| |
| /** {@inheritDoc} */ |
| public Property eval(Property[] args, PropertyInfo pInfo) throws PropertyException { |
| Numeric distance |
| = pInfo.getPropertyList() |
| .get(Constants.PR_PROVISIONAL_DISTANCE_BETWEEN_STARTS).getNumeric(); |
| |
| PropertyList pList = pInfo.getPropertyList(); |
| while (pList != null && !(pList.getFObj() instanceof ListItem)) { |
| pList = pList.getParentPropertyList(); |
| } |
| if (pList == null) { |
| throw new PropertyException("body-start() called from outside an fo:list-item"); |
| } |
| |
| Numeric startIndent = pList.get(Constants.PR_START_INDENT).getNumeric(); |
| |
| return (Property) NumericOp.addition(distance, startIndent); |
| } |
| |
| } |