GWT in Action, Second Edition

14.1. Understanding events

Because you’re this far into the book, we’re going to assume you’re familiar with adding event handlers to widgets and panels (back in section 3.7 we discussed this). You’ve probably written code similar to the following:

Button save = new Button("Save");
save.addClickHandler(new ClickHandler(){
   public void onClick(ClickEvent event){
      Window.alert("Saving");
   }
});

Or you may have used the UiBinder equivalent, such as the following:

@UiHandler("save")
void saveInformation(ClickEvent event){
   Window.alert("Saving");
}

 

Order of event handlers

If you add two event handlers for the same event to a widget, they’re fired in the order in which they’re added.

In the UiBinder approach, the ordering is taken from the order ...