final PScrollPanel scroll = new PScrollPanel();
final PRichTextArea richTextArea = new PRichTextArea();
final PRichTextToolbar richTextToolbar = new PRichTextToolbar(richTextArea);
richTextArea.addValueChangeHandler(new PValueChangeHandler<String>() {
@Override
public void onValueChange(final PValueChangeEvent<String> event) {
System.err.println(richTextArea.getHTML());
}