com.github.dandelion.datatables.thymeleaf.processor.TbodyElProcessor Maven / Gradle / Ivy
package com.github.dandelion.datatables.thymeleaf.processor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.thymeleaf.Arguments;
import org.thymeleaf.dom.Element;
import org.thymeleaf.dom.Node;
import org.thymeleaf.processor.IElementNameProcessorMatcher;
import org.thymeleaf.processor.ProcessorResult;
import org.thymeleaf.processor.element.AbstractElementProcessor;
import com.github.dandelion.datatables.thymeleaf.dialect.DataTablesDialect;
/**
*
* Element processor applied to the HTML tbody tag.
*
* This processor adds the dt:data attribute to HTML tr
* and td tags which will be duplicated (by th:each attribute)
* and internally processed by other attributes to fill the
* HtmlTable bean.
*
* @author Thibault Duchateau
*/
public class TbodyElProcessor extends AbstractElementProcessor {
// Logger
private static Logger logger = LoggerFactory.getLogger(TbodyElProcessor.class);
public TbodyElProcessor(IElementNameProcessorMatcher matcher) {
super(matcher);
}
@Override
public int getPrecedence() {
return 4000;
}
/**
*
* Parler de ça : Ability to precompute the processors to be applied to
* nodes, so that the sequence of operations to be performed at each node
* during template processing can be cached along with the DOM tree itself
* in many scenarios, significantly reducing processing time.
*/
@Override
protected ProcessorResult processElement(Arguments arguments, Element element) {
logger.debug("{} element found", element.getNormalizedName());
// All the tbody tag are iterated over
for (Node child : element.getChildren()) {
if (child != null && child instanceof Element) {
Element trChildTag = (Element) child;
String trChildTagName = trChildTag.getNormalizedName();
// The tr nodes must be processed (for HtmlRow creation)
trChildTag.setProcessable(true);
if (trChildTagName != null && trChildTagName.equals("tr")) {
if (trChildTag.hasAttribute("th:each")) {
trChildTag.setAttribute(DataTablesDialect.DIALECT_PREFIX + ":data",
"internalUse");
// trChildTag.setRecomputeProcessorsImmediately(true);
for (Node grandchild : trChildTag.getChildren()) {
if (grandchild != null && grandchild instanceof Element) {
Element tdChildTag = (Element) grandchild;
tdChildTag.setAttribute(DataTablesDialect.DIALECT_PREFIX + ":data",
"internalUse");
// The td nodes must be processed too (for
// HtmlColumn creation)
tdChildTag.setProcessable(true);
// tdChildTag.setRecomputeProcessorsImmediately(true);
}
}
}
}
}
}
return ProcessorResult.OK;
}
}