/**
* Similar to the XMLRepresentation interface, this method will append an XML representation of
* some preferences to an existing node.
*
* @param prefs the preferences node to write out.
* @param deep - true to include a subtree with all child preferences nodes.
* @param domDoc the document in which the node will reside.
* @param node the node to which a child is applied.
*/
public static void toXML(
Preferences prefs, boolean deep, org.w3c.dom.Document domDoc, Element node, Map options)
throws IOException {
String[] keys;
String[] children;
Element childElement, entry;
String value;
int i;
// System.err.println( "node = "+prefs.name() );
try {
keys = prefs.keys();
childElement = (Element) node.appendChild(domDoc.createElement("map"));
for (i = 0; i < keys.length; i++) {
value = prefs.get(keys[i], null);
// System.err.println( " key = "+keys[i]+"; value = "+value );
if (value == null) continue;
entry = (Element) childElement.appendChild(domDoc.createElement("entry"));
entry.setAttribute("key", keys[i]);
entry.setAttribute("value", value);
}
if (deep) {
children = prefs.childrenNames();
for (i = 0; i < children.length; i++) {
childElement = (Element) node.appendChild(domDoc.createElement("node"));
childElement.setAttribute("name", children[i]);
toXML(prefs.node(children[i]), deep, domDoc, childElement, options);
}
}
} catch (DOMException e1) {
throw IOUtil.map(e1);
} catch (BackingStoreException e2) {
throw IOUtil.map(e2);
}
}
@Test
public void testPng() throws Exception {
String path =
ProcessDefManagerTest.class.getClassLoader().getResource("graphsub.xml").getPath();
String value = FileUtils.readFileToString(new File(path));
mxCodec codec = new mxCodec();
org.w3c.dom.Document doc = mxXmlUtils.parseXml(value);
codec = new mxCodec(doc);
mxGraphModel model = (mxGraphModel) codec.decode(doc.getDocumentElement());
mxGraph graph = new mxGraph();
graph.setModel(model);
BufferedImage image =
mxCellRenderer.createBufferedImage(graph, null, 1, Color.WHITE, true, null);
byte[] ret = null;
ByteArrayOutputStream outputStream = null;
try {
outputStream = new ByteArrayOutputStream();
ImageIO.write(image, "png", outputStream);
ret = outputStream.toByteArray();
FileUtils.writeByteArrayToFile(new File("/Users/lihao/Downloads/graph.png"), ret);
} catch (Exception e) {
e.printStackTrace();
}
}
private static mxGraphModel getMxGraphModel(String gxml) {
mxCodec codec = new mxCodec();
org.w3c.dom.Document doc = mxXmlUtils.parseXml(gxml);
codec = new mxCodec(doc);
mxGraphModel model = (mxGraphModel) codec.decode(doc.getDocumentElement());
return model;
}
/**
* Called to store current property value into XML subtree. The property value should be set using
* the setValue method prior to calling this method.
*
* @param doc The XML document to store the XML in - should be used for creating nodes only
* @return the XML DOM element representing a subtree of XML from which the value should be loaded
*/
public org.w3c.dom.Node storeToXML(org.w3c.dom.Document doc) {
org.w3c.dom.Element el = doc.createElement(XML_CURSOR);
el.setAttribute(ATTR_ID, getAsText());
return el;
}