FocusPanel focus = new FocusPanel();
HandlerRegistration registration = focus.addClickHandler(new ClickHandler()
{
public void onClick(ClickEvent event)
{
// Panel has been clicked
}
});
registration.removeHandler();
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GWT 1.6: "removeClickHandler" solution
by: Jordan Beck
GWT 1.6 changed all Listeners to Handlers and in the process setup a few different practices. One possibility with GWT before 1.6 was to add a ClickListener to a FocusPanel and then remove it by calling the method removeClickListener(ClickListener listener). But, in 1.6 this is not an option with Handlers. There is no removeClickHandler(). Instead, when you add a handler to a widget, it returns an instance of HandlerRegistration. This can then be used to remove that handler. Here is an example of a handler being adding then removed:
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