| /* |
| * 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.table; |
| |
| import java.util.Iterator; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.fop.fo.FONode; |
| import org.apache.fop.fo.FONode.FONodeIterator; |
| import org.apache.fop.fo.flow.table.EffRow; |
| import org.apache.fop.fo.flow.table.Table; |
| import org.apache.fop.fo.flow.table.TableBody; |
| |
| /** |
| * Iterator that lets the table layout manager step over all the rows of a part of the |
| * table (table-header, table-footer or table-body). |
| * <p>Note: This class is not thread-safe.</p> |
| */ |
| public class TableRowIterator { |
| |
| /** Selects the table-body elements for iteration. */ |
| public static final int BODY = 0; |
| /** Selects the table-header elements for iteration. */ |
| public static final int HEADER = 1; |
| /** Selects the table-footer elements for iteration. */ |
| public static final int FOOTER = 2; |
| |
| /** Part of the table over which to iterate. One of BODY, HEADER or FOOTER. */ |
| private int tablePart; |
| |
| private Iterator rowGroupsIter; |
| |
| private int rowIndex; |
| |
| /** |
| * Creates a new TableRowIterator. |
| * @param table the table to iterate over |
| * @param tablePart indicates what part of the table to iterate over (HEADER, FOOTER, BODY) |
| */ |
| public TableRowIterator(Table table, int tablePart) { |
| this.tablePart = tablePart; |
| switch(tablePart) { |
| case HEADER: |
| rowGroupsIter = table.getTableHeader().getRowGroups().iterator(); |
| break; |
| case FOOTER: |
| rowGroupsIter = table.getTableFooter().getRowGroups().iterator(); |
| break; |
| case BODY: |
| List rowGroupsList = new LinkedList(); |
| // TODO this is ugly |
| for (FONodeIterator iter = table.getChildNodes(); iter.hasNext();) { |
| FONode node = iter.nextNode(); |
| if (node instanceof TableBody) { |
| rowGroupsList.addAll(((TableBody) node).getRowGroups()); |
| } |
| } |
| rowGroupsIter = rowGroupsList.iterator(); |
| break; |
| default: |
| throw new IllegalArgumentException("Unrecognised TablePart: " + tablePart); |
| } |
| } |
| |
| /** |
| * Returns the next row group if any. A row group in this context is the minimum number of |
| * consecutive rows which contains all spanned grid units of its cells. |
| * @return the next row group, or null |
| */ |
| EffRow[] getNextRowGroup() { |
| if (!rowGroupsIter.hasNext()) { |
| return null; |
| } |
| List rowGroup = (List) rowGroupsIter.next(); |
| EffRow[] effRowGroup = new EffRow[rowGroup.size()]; |
| int i = 0; |
| for (Iterator rowIter = rowGroup.iterator(); rowIter.hasNext();) { |
| List gridUnits = (List) rowIter.next(); |
| effRowGroup[i++] = new EffRow(rowIndex++, tablePart, gridUnits); |
| } |
| return effRowGroup; |
| } |
| |
| } |