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Add support for more html tags on the Document/PDF exporter

This commit is contained in:
George Kalampokis 2021-10-26 16:21:28 +03:00
parent 2c29469590
commit 93baa4a281
1 changed files with 130 additions and 19 deletions
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149
dmp-backend/web/src/main/java/eu/eudat/logic/utilities/documents/word/HtmlToWorldBuilder.java
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@ -8,33 +8,27 @@ import org.jsoup.nodes.TextNode;
import org.jsoup.select.Elements;
import org.jsoup.select.NodeTraversor;
import org.jsoup.select.NodeVisitor;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STHighlightColor;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.*;
import java.util.LinkedHashMap;
import java.util.Map;
import java.math.BigInteger;
import java.util.*;
public class HtmlToWorldBuilder implements NodeVisitor {
private final Map<String, Boolean> properties = new LinkedHashMap<>();
private final XWPFParagraph paragraph;
private XWPFParagraph paragraph;
private XWPFRun run;
private Boolean dumpRun;
private final String identation;
private Boolean isIdentationUsed;
private XWPFNumbering numbering;
private Queue<BigInteger> abstractNumId;
private BigInteger numberingLevel;
public static void convert(XWPFDocument document, Document htmlDocument, String identation) {
Elements htmlParagraphs = htmlDocument.select("p");
if (!htmlParagraphs.isEmpty()) {
for (Element htmlParagraph : htmlParagraphs) {
XWPFParagraph paragraph = document.createParagraph();
HtmlToWorldBuilder htmlToWorldBuilder = new HtmlToWorldBuilder(paragraph, identation);
NodeTraversor.traverse(htmlToWorldBuilder, htmlParagraph);
}
} else {
XWPFParagraph paragraph = document.createParagraph();
HtmlToWorldBuilder htmlToWorldBuilder = new HtmlToWorldBuilder(paragraph, identation);
NodeTraversor.traverse(htmlToWorldBuilder, htmlDocument);
}
XWPFParagraph paragraph = document.createParagraph();
HtmlToWorldBuilder htmlToWorldBuilder = new HtmlToWorldBuilder(paragraph, identation);
NodeTraversor.traverse(htmlToWorldBuilder, htmlDocument);
}
public HtmlToWorldBuilder(XWPFParagraph paragraph, String identation) {
@ -44,6 +38,8 @@ public class HtmlToWorldBuilder implements NodeVisitor {
this.identation = identation;
this.isIdentationUsed = false;
this.run.setFontSize(11);
this.abstractNumId = new ArrayDeque<>();
this.numberingLevel = BigInteger.valueOf(-1);
}
@Override
@ -62,11 +58,11 @@ public class HtmlToWorldBuilder implements NodeVisitor {
this.run.setFontSize(11);
this.dumpRun = false;
}
parseProperties();
parseProperties(node);
properties.clear();
}
private void parseProperties() {
private void parseProperties(Node node) {
properties.entrySet().forEach(stringBooleanEntry -> {
switch (stringBooleanEntry.getKey()) {
case "i" :
@ -85,6 +81,9 @@ public class HtmlToWorldBuilder implements NodeVisitor {
this.run.setFontSize(stringBooleanEntry.getValue() ? 8 : 11);
break;
case "del":
case "strike":
case "strikethrough":
case "s":
this.run.setStrikeThrough(stringBooleanEntry.getValue());
break;
case "mark":
@ -96,6 +95,75 @@ public class HtmlToWorldBuilder implements NodeVisitor {
case "sup":
this.run.setSubscript(stringBooleanEntry.getValue() ? VerticalAlign.SUPERSCRIPT : VerticalAlign.BASELINE);
break;
case "div":
case "p":
this.paragraph = this.paragraph.getDocument().createParagraph();
this.run = this.paragraph.createRun();
if (stringBooleanEntry.getValue()) {
if (node.hasAttr("align")) {
String alignment = node.attr("align");
this.paragraph.setAlignment(ParagraphAlignment.valueOf(alignment.toUpperCase(Locale.ROOT)));
}
}
break;
case "blockquote":
this.paragraph = this.paragraph.getDocument().createParagraph();
this.run = this.paragraph.createRun();
if (stringBooleanEntry.getValue()) {
this.paragraph.setIndentationLeft(720);
}
break;
case "ul":
if (stringBooleanEntry.getValue()) {
createNumbering(STNumberFormat.BULLET);
} else {
this.paragraph = this.paragraph.getDocument().createParagraph();
this.run = this.paragraph.createRun();
this.numberingLevel = this.numberingLevel.subtract(BigInteger.ONE);
((ArrayDeque)this.abstractNumId).removeLast();
}
break;
case "ol":
if (stringBooleanEntry.getValue()) {
createNumbering(STNumberFormat.DECIMAL);
} else {
this.paragraph = this.paragraph.getDocument().createParagraph();
this.run = this.paragraph.createRun();
this.numberingLevel = this.numberingLevel.subtract(BigInteger.ONE);
((ArrayDeque)this.abstractNumId).removeLast();
}
break;
case "li":
if (stringBooleanEntry.getValue()) {
this.paragraph = this.paragraph.getDocument().createParagraph();
this.paragraph.setIndentationLeft(720 * numberingLevel.intValue());
this.run = this.paragraph.createRun();
this.paragraph.setNumID(((ArrayDeque<BigInteger>)abstractNumId).getLast());
}
break;
case "font":
if (stringBooleanEntry.getValue()) {
if (node.hasAttr("color")) {
this.run.setColor(node.attr("color").substring(1));
}
} else {
this.run.setColor("000000");
}
break;
case "a":
if (stringBooleanEntry.getValue()) {
if (node.hasAttr("href")) {
this.run = createHyperLinkRun(node.attr("href"));
this.run.setColor("0000FF");
this.run.setUnderline(UnderlinePatterns.SINGLE);
}
} else {
this.run = paragraph.createRun();
}
break;
case "br":
this.run.addCarriageReturn();
break;
}
});
}
@ -104,7 +172,50 @@ public class HtmlToWorldBuilder implements NodeVisitor {
public void tail(Node node, int i) {
String name = node.nodeName();
properties.put(name, false);
parseProperties();
parseProperties(node);
properties.clear();
}
//GK: This function creates one numbering.xml for the word document and adds a specific format.
//It imitates the numbering.xml that is usually generated by word editors like LibreOffice
private void createNumbering(STNumberFormat.Enum format) {
CTAbstractNum ctAbstractNum = CTAbstractNum.Factory.newInstance();
if (this.numbering == null) this.numbering = this.paragraph.getDocument().createNumbering();
BigInteger tempNumId = BigInteger.ONE;
boolean found = false;
while (!found) {
Object o = numbering.getAbstractNum(tempNumId);
found = (o == null);
if (!found) tempNumId = tempNumId.add(BigInteger.ONE);
}
ctAbstractNum.setAbstractNumId(tempNumId);
CTLvl ctLvl = ctAbstractNum.addNewLvl();
this.numberingLevel = numberingLevel.add(BigInteger.ONE);
ctLvl.setIlvl(numberingLevel);
ctLvl.addNewNumFmt().setVal(format);
ctLvl.addNewStart().setVal(BigInteger.ONE);
if (format == STNumberFormat.BULLET) {
ctLvl.addNewLvlText().setVal("\u2022");
} else {
ctLvl.addNewLvlText().setVal("%1.");
}
XWPFAbstractNum xwpfAbstractNum = new XWPFAbstractNum(ctAbstractNum);
this.abstractNumId.add(this.numbering.addAbstractNum(xwpfAbstractNum));
this.numbering.addNum(((ArrayDeque<BigInteger>)abstractNumId).getLast());
}
private XWPFHyperlinkRun createHyperLinkRun(String uri) {
String rId = this.paragraph.getDocument().getPackagePart().addExternalRelationship(uri, XWPFRelation.HYPERLINK.getRelation()).getId();
CTHyperlink cthyperLink=paragraph.getCTP().addNewHyperlink();
cthyperLink.setId(rId);
cthyperLink.addNewR();
return new XWPFHyperlinkRun(
cthyperLink,
cthyperLink.getRArray(0),
paragraph
);
}
}