*
* @param text the text to match
*/
protected GraphicsNode getNext(String text) {
if (walker == null && gvtRoot != null) {
walker = new GVTTreeWalker(gvtRoot);
}
GraphicsNode gn = walker.getCurrentGraphicsNode();
int index = match(gn, text, currentIndex+text.length());
if (index >= 0) {
currentIndex = index;