| /* |
| * 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.logging; |
| |
| import java.util.List; |
| import java.util.ListIterator; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.fop.layoutmgr.ElementListObserver.Observer; |
| import org.apache.fop.layoutmgr.ElementListUtils; |
| import org.apache.fop.layoutmgr.ListElement; |
| |
| /** |
| * <p>Logs all observed element lists. |
| * </p> |
| * <p>You can enable/disabled individual categories separately, for example for JDK 1.4 logging: |
| * </p> |
| * <p>org.apache.fop.logging.LoggingElementListObserver.level = INFO</p> |
| * <p>org.apache.fop.logging.LoggingElementListObserver.table-cell.level = FINE</p> |
| */ |
| public class LoggingElementListObserver implements Observer { |
| |
| /** @see org.apache.fop.layoutmgr.ElementListObserver.Observer */ |
| public void observe(List elementList, String category, String id) { |
| Log log = LogFactory.getLog(LoggingElementListObserver.class.getName() + "." + category); |
| if (!log.isDebugEnabled()) { |
| return; |
| } |
| log.debug(" "); |
| int len = (elementList != null ? ElementListUtils.calcContentLength(elementList) : 0); |
| log.debug("ElementList: category=" + category + ", id=" + id + ", len=" + len + "mpt"); |
| if (elementList == null) { |
| log.debug("<<empty list>>"); |
| return; |
| } |
| ListIterator tempIter = elementList.listIterator(); |
| ListElement temp; |
| while (tempIter.hasNext()) { |
| temp = (ListElement) tempIter.next(); |
| if (temp.isBox()) { |
| log.debug(tempIter.previousIndex() |
| + ") " + temp); |
| } else if (temp.isGlue()) { |
| log.debug(tempIter.previousIndex() |
| + ") " + temp); |
| } else { |
| log.debug(tempIter.previousIndex() |
| + ") " + temp); |
| } |
| if (temp.getPosition() != null) { |
| log.debug(" " + temp.getPosition()); |
| } |
| } |
| log.debug(" "); |
| } |
| |
| } |