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- /*
- * 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.layoutmgr;
-
- import java.util.LinkedList;
- import java.util.List;
-
- import org.apache.fop.area.Area;
- import org.apache.fop.fo.flow.FootnoteBody;
-
- /**
- * Layout manager for footnote bodies.
- */
- public class FootnoteBodyLayoutManager extends BlockStackingLayoutManager {
-
- private List<KnuthElement> knuthElements;
-
- /**
- * Creates a new FootnoteBodyLayoutManager.
- * @param body the footnote-body element
- */
- public FootnoteBodyLayoutManager(FootnoteBody body) {
- super(body);
- }
-
- @Override
- public List<KnuthElement> getNextKnuthElements(LayoutContext context, int alignment) {
- if (knuthElements == null) {
- knuthElements = super.getNextKnuthElements(context, alignment);
- }
- return knuthElements;
- }
-
- /** {@inheritDoc} */
- @Override
- public void addAreas(PositionIterator parentIter, LayoutContext layoutContext) {
- LayoutManager childLM;
- LayoutManager lastLM = null;
- LayoutContext lc = LayoutContext.newInstance();
-
- // "unwrap" the NonLeafPositions stored in parentIter
- // and put them in a new list;
- LinkedList<Position> positionList = new LinkedList<Position>();
- Position pos;
- while (parentIter.hasNext()) {
- pos = parentIter.next();
- Position innerPosition;
- if (pos instanceof NonLeafPosition) {
- innerPosition = pos.getPosition();
- if (innerPosition.getLM() == this) {
- // pos was created by this LM and was inside a penalty
- // allowing or forbidding a page break
- // nothing to do
- } else {
- // innerPosition was created by another LM
- positionList.add(innerPosition);
- lastLM = innerPosition.getLM();
- }
- }
- }
-
- // the Positions in positionList were inside the elements
- // created by the LineLM
- PositionIterator childPosIter = new PositionIterator(positionList.listIterator());
-
- while ((childLM = childPosIter.getNextChildLM()) != null) {
- // set last area flag
- lc.setFlags(LayoutContext.LAST_AREA,
- (layoutContext.isLastArea() && childLM == lastLM));
- // Add the line areas to Area
- childLM.addAreas(childPosIter, lc);
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public void addChildArea(Area childArea) {
- childArea.setAreaClass(Area.CLASS_FOOTNOTE);
- parentLayoutManager.addChildArea(childArea);
- }
-
- /** @return the FootnoteBody node */
- protected FootnoteBody getFootnodeBodyFO() {
- return (FootnoteBody) fobj;
- }
-
- /** {@inheritDoc} */
- @Override
- public Keep getKeepTogether() {
- return getParentKeepTogether();
- }
-
- /** {@inheritDoc} */
- @Override
- public Keep getKeepWithNext() {
- return Keep.KEEP_AUTO;
- }
-
- /** {@inheritDoc} */
- @Override
- public Keep getKeepWithPrevious() {
- return Keep.KEEP_AUTO;
- }
-
- @Override
- public void reset() {
- super.reset();
- knuthElements = null;
- }
-
- }
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