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fix: Fixed pagination with paragraph break-before property located in list

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Georgy Litvinov 2021-09-17 19:59:20 +02:00
parent 80b7005066
commit 5566e5ff43
1 changed files with 73 additions and 0 deletions
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src/main/java/w2phtml/pageSplitters/ListBreaksFix.java Normal file
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package w2phtml.pageSplitters;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import pro.litvinovg.w2phtml.gui.ConversionExecutor;
import pro.litvinovg.xml.Debug;
import w2phtml.office.OfficeReader;
import w2phtml.office.StyleWithProperties;
import w2phtml.util.Misc;
import static w2phtml.office.XMLString.TEXT_LIST_ITEM;
import static w2phtml.office.XMLString.TEXT_SOFT_PAGE_BREAK;
import static w2phtml.office.XMLString.TEXT_STYLE_NAME;
import java.util.Iterator;
import static w2phtml.office.XMLString.TEXT_P;
import static w2phtml.office.XMLString.TEXT_H;
import static w2phtml.office.XMLString.FO_BREAK_BEFORE;
public class ListBreaksFix {
private static final Logger logger = LoggerFactory.getLogger(ListBreaksFix.class);
private OfficeReader ofr;
public ListBreaksFix(OfficeReader ofr) {
this.ofr = ofr;
}
// Hack to fix hard breaks splitting in lists
public void addSPBsBeforeBreaksInLists(Node onode) {
try {
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = builderFactory.newDocumentBuilder();
Document document = onode.getOwnerDocument();
XPath xPath = XPathFactory.newInstance().newXPath();
String expression = "//*[starts-with(local-name(),'list-item')]//*[starts-with(local-name(),'p') ]";
NodeList nodeList = (NodeList) xPath.compile(expression).evaluate(document, XPathConstants.NODESET);
for (int i = 0; i < nodeList.getLength(); i++) {
Node paragraph = nodeList.item(i);
if (hasBreakBefore(paragraph)) {
Node spb = document.createElement(TEXT_SOFT_PAGE_BREAK);
paragraph.getParentNode().insertBefore(spb, paragraph);
}
}
} catch (XPathExpressionException e) {
logger.error("Error fixing hard breaks in lists" + e.getLocalizedMessage());
e.printStackTrace();
} catch (ParserConfigurationException e) {
logger.error("Error fixing hard breaks in lists" + e.getLocalizedMessage());
e.printStackTrace();
}
}
private boolean hasBreakBefore(Node node) {
StyleWithProperties style = ofr.getParStyle(Misc.getAttribute(node,TEXT_STYLE_NAME));
if (style != null && "page".equals(style.getProperty(FO_BREAK_BEFORE))) {
return true;
}
return false;
}
}