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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
package org.openoffice.xmerge.merger.merge;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
import org.openoffice.xmerge.ConverterCapabilities;
import org.openoffice.xmerge.converter.xml.OfficeConstants;
/**
* Utility methods to handle sheet XML tree.
*/
public class SheetUtil {
/**
* <p>Empty the content of a cell value. This includes the following:
* </p>
*
* <p><ul><li>
* Remove all of the supported attributes.
* </li><li>
* Remove the first <i>text:p</i> <code>Node</code> for most of the cells.
* </li></ul></p>
*
* @param cc The <code>ConverterCapabilities</code>.
* @param node The <code>Node</code>.
*/
public static void emptyCell(ConverterCapabilities cc, Node node) {
NamedNodeMap attrNodes = node.getAttributes();
if (attrNodes != null) {
// empty the first text:p node.
// Note: it's not necessary only string type cell contain text:p
// basically, all different type of cell will contain one
Element cell = (Element)node;
// get the paragraph node list
NodeList paraNodes =
cell.getElementsByTagName(OfficeConstants.TAG_PARAGRAPH);
Node firstParaNode = paraNodes.item(0);
// remove the first paragraph element node
if (firstParaNode != null) {
Node parent = firstParaNode.getParentNode();
parent.removeChild(firstParaNode);
}
// check all the attributes and remove those we supported in
// converter
// NOTE: for attribute list, refer to section 4.7.2 in specification
int len = attrNodes.getLength();
for (int i = 0; i < len; ) {
Node attr = attrNodes.item(i);
// when we hit the end of the attribute nodes, return
// it may happen sooner as we keep on removing nodes
if (attr == null) {
break;
}
// remove the supported attr except columns repeated attribute
if (cc.canConvertAttribute(OfficeConstants.TAG_TABLE_CELL,
attr.getNodeName()) &&
!attr.getNodeName().equals(
OfficeConstants.ATTRIBUTE_TABLE_NUM_COLUMNS_REPEATED)) {
attrNodes.removeNamedItem(attr.getNodeName());
} else {
i++;
}
}
}
}
}
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