QetElementEditor : Use elementData class

sources/qetxml.cpp

@@ -554,3 +554,30 @@ void QETXML::modelHeaderDataFromXml(
 		model->setHeaderData(section_, orientation_, data_, role_);
 	}
 }
+
+/**
+ * @brief QETXML::findInDomElement
+ * @param dom_elmt
+ * @param tag_name
+ * @return all direct child of dom_elmt with tag name tag_name
+ */
+QVector<QDomElement> QETXML::findInDomElement(const QDomElement &dom_elmt, const QString &tag_name)
+{
+	QVector<QDomElement> return_list;
+	for (auto node = dom_elmt.firstChild() ;
+		 !node.isNull() ;
+		 node = node.nextSibling())
+	{
+		if (!node.isElement()) {
+			continue;
+		}
+
+		auto element = node.toElement();
+		if (element.isNull() || element.tagName() != tag_name) {
+			continue;
+		}
+
+		return_list << element;
+	}
+	return(return_list);
+}