Hi, there.
I'm sorry to bother you developers, but I already tried on the user's list
and got not any answer at all.
In my application I need to know when a DOM tree is changed.
As there is a nice event model since DOM level 2, I tried to
use that. But whatever I try, there are no events fired,
although the tree gets changed. Can someone shed some light
on this, or provide me a little example?
The code I wrote so far uses Xerces 1.4.1 and looks like
this, and I expect it to throw an exception but it does not:
public class DomEventDemo implements
org.w3c.dom.events.EventListener {
public DomEventDemo() {
}
public static void main(String[] args) throws Exception {
org.w3c.dom.Document doc =
chaudhuri.util.DOMUtil.parseString("<?xml
version=\"1.0\"?><test attribut=\"1\"/>");
if(doc instanceof org.apache.xerces.dom.DocumentImpl) {
((org.apache.xerces.dom.DocumentImpl)doc).setMutationEvents(true);
((org.w3c.dom.events.EventTarget)doc).addEventListener("Mutati
onEvents", new DomEventDemo(), false);
}
System.out.println("Vorher:
"+chaudhuri.util.DOMUtil.toXML(doc));
org.w3c.dom.Node attr =
org.apache.xpath.XPathAPI.selectSingleNode(doc, "/test/@attribut");
attr.setNodeValue("2");
System.out.println("Nachher:
"+chaudhuri.util.DOMUtil.toXML(doc));
}
public void handleEvent(org.w3c.dom.events.Event event) {
throw new UnsupportedOperationException();
}
}
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