void lookupPrefix(org.w3c.dom.Node node) {
if (node == null) throw new IllegalArgumentException("node must not be null");
String prefix = node.lookupPrefix(namespace.getUri());
if (prefix == null) {
// check to see if we match the default namespace
String defaultNamespace = node.lookupNamespaceURI(null);
if (defaultNamespace == null) defaultNamespace = "";
String nodeNamespace = namespace.getUri();
if (nodeNamespace.equals(defaultNamespace)) {
prefix = "";
}
}
int i = 0;
while (prefix == null) {
String generatedPrefix = "e4x_" + i++;
String generatedUri = node.lookupNamespaceURI(generatedPrefix);
if (generatedUri == null) {
prefix = generatedPrefix;
org.w3c.dom.Node top = node;
while (top.getParentNode() != null
&& top.getParentNode() instanceof org.w3c.dom.Element) {
top = top.getParentNode();
}
((org.w3c.dom.Element) top)
.setAttributeNS(
"http://www.w3.org/2000/xmlns/", "xmlns:" + prefix, namespace.getUri());
}
}
namespace.setPrefix(prefix);
}
String qualify(org.w3c.dom.Node node) {
if (namespace.getPrefix() == null) {
if (node != null) {
lookupPrefix(node);
} else {
if (namespace.getUri().equals("")) {
namespace.setPrefix("");
} else {
// TODO I am not sure this is right, but if we are creating a standalone node, I
// think we can set the
// default namespace on the node itself and not worry about setting a prefix
// for that namespace.
namespace.setPrefix("");
}
}
}
return qualify(namespace.getPrefix(), localName);
}
/** @deprecated Use getNamespace() */
String getUri() {
return namespace.getUri();
}
void setAttribute(org.w3c.dom.Element element, String value) {
if (namespace.getPrefix() == null) lookupPrefix(element);
element.setAttributeNS(namespace.getUri(), qualify(namespace.getPrefix(), localName), value);
}
private boolean namespacesEqual(Namespace one, Namespace two) {
if (one == null && two == null) return true;
if (one == null || two == null) return false;
return equals(one.getUri(), two.getUri());
}
private String getExistingPrefixFor(Namespace namespace) {
if (getDefaultNamespace().getUri().equals(namespace.getUri())) {
return "";
}
return dom.lookupPrefix(namespace.getUri());
}