private void writeDataElement(XmlSerializer xml, String name, SimpleData value, int depth)
throws IOException {
String elemName = null;
String text = null;
if (value instanceof TagData) {
elemName = TAG_ELEM;
} else if (value instanceof DateData) {
elemName = DATE_ELEM;
Date d = ((DateData) value).getValue();
if (d != null) text = XMLUtils.saveDate(d);
} else if (value instanceof NumberData) {
elemName = NUMBER_ELEM;
text = numberFormat.format(((NumberData) value).getDouble());
} else {
elemName = STRING_ELEM;
text = value.toString();
}
if (elemName != null) {
indent(xml, depth);
xml.startTag(null, elemName);
xml.attribute(null, NAME_ATTR, name);
if (text != null) xml.text(text);
xml.endTag(null, elemName);
xml.ignorableWhitespace(NEWLINE);
}
}
/**
* Returns the specified attribute in the org.w3c.dom.Element argument. If no such attribute
* exists, an error is logged and a XMLParseException is thrown.
*/
private String getAttribute(Element xmlDefinition, String tag) throws IllegalArgumentException {
String attribute = xmlDefinition.getAttribute(tag);
if (!XMLUtils.hasValue(attribute)) {
String message = "Missing attribute \"" + tag + "\" in preferences-pane declaration.";
logger.log(Level.SEVERE, message);
throw new IllegalArgumentException(message);
}
return attribute;
}
private String escXml(String s) {
return s == null ? "" : XMLUtils.escapeAttribute(s);
}