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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.List;
-
- /**
- * A dedicated {@link PositionIterator} that is backed by an iterator
- * over a list of {@link KnuthElement}s.
- */
- public class KnuthPossPosIter extends PositionIterator {
-
- private int iterCount;
-
- /**
- * Main constructor
- * @param elementList List of Knuth elements
- * @param startPos starting position, inclusive
- * @param endPos ending position, exclusive
- */
- public KnuthPossPosIter(List elementList, int startPos, int endPos) {
- super(elementList.listIterator(startPos));
- iterCount = endPos - startPos;
- }
-
- /**
- * Auxiliary constructor
- * @param elementList List of Knuth elements
- */
- public KnuthPossPosIter(List elementList) {
- this(elementList, 0, elementList.size());
- }
-
- // Check position < endPos
-
- /** {@inheritDoc} */
- @Override
- protected boolean checkNext() {
- if (iterCount > 0) {
- return super.checkNext();
- } else {
- endIter();
- return false;
- }
- }
-
- /** {@inheritDoc} */
- @Override
- public Position next() {
- --iterCount;
- return super.next();
- }
-
- /**
- * Peek at next, returning as ListElement.
- * @return peek at next as ListElement
- */
- public ListElement getKE() {
- return (ListElement) peekNext();
- }
-
- /** {@inheritDoc} */
- @Override
- protected LayoutManager getLM(Object nextObj) {
- return ((ListElement) nextObj).getLayoutManager();
- }
-
- /** {@inheritDoc} */
- @Override
- protected Position getPos(Object nextObj) {
- return ((ListElement) nextObj).getPosition();
- }
- }
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