CellNodeIterator.java

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/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */
 
package org.openoffice.xmerge.merger.diff;
 
import org.w3c.dom.Node;
import org.w3c.dom.Element;
 
import org.openoffice.xmerge.ConverterCapabilities;
import org.openoffice.xmerge.converter.xml.OfficeConstants;
 
public final class CellNodeIterator extends NodeIterator  {
 
    // can be expanded to an array in the future, not necessary right now
    private static final String SUPPORTED_TAG1 = OfficeConstants.TAG_TABLE_CELL;
 
    public CellNodeIterator(ConverterCapabilities cc, Node node) {
        super(cc, node);
    }
 
    @Override
    protected boolean nodeSupported(Node node) {
 
        // can use an array later to check all possible tags for
        // future expansion
        return node.getNodeType() == Node.ELEMENT_NODE &&
                node.getNodeName().equals(SUPPORTED_TAG1);
    }
 
    @Override
    protected boolean childrenEqual(Node node1, Node node2) {
 
        boolean equal = false;
 
        if (node1.hasChildNodes() && node2.hasChildNodes()) {
            Element cell1 = (Element)node1;
            Element cell2 = (Element)node2;
 
            // only need compare the first <text:p> children node, don't want
            // to compare any non-supported features
            // TODO: need to confirm whether all the text string is the
            // first <text:p>, though I checked with the openoffice 619 build
            Node paraNode1 = cell1.getElementsByTagName(
                            OfficeConstants.TAG_PARAGRAPH).item(0);
            Node paraNode2 = cell2.getElementsByTagName(
                            OfficeConstants.TAG_PARAGRAPH).item(0);
 
            equal = super.compareNode(paraNode1, paraNode2);
        }
 
        return equal;
    }
}