/* * 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; 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} */ protected boolean checkNext() { if (iterCount > 0) { return super.checkNext(); } else { endIter(); return false; } } /** * {@inheritDoc} */ public Object next() { --iterCount; return super.next(); } public ListElement getKE() { return (ListElement) peekNext(); } protected LayoutManager getLM(Object nextObj) { return ((ListElement) nextObj).getLayoutManager(); } protected Position getPos(Object nextObj) { return ((ListElement) nextObj).getPosition(); } }
