b.addChangeListener(handler);
b.addFocusHandler(handler);
b.addBlurHandler(handler);
b.addFocusListener(handler);
b.addValueChangeHandler(handler);
b.addMouseListener(handler);
// Rich text box:
RichTextArea rich = new RichTextArea();
rich.setTitle("rich text box");
p.add(rich);
handler = new EventReporter<String, Object>(p);