title: GWT Multiple Events Handling
body: <p>I have 3 widgets on my UI side (1 ListBox, 2 TextBoxes). I would like to create an Handler which could handle value change event if any of the three widgets value changes and also if on Blur for ListBox.The skeleton of code would be something like this </p>
  
  <pre><code>registerHandler(new multiWidgetHandler());
  private class multiWidgetHandler{
    //code for handling onValueChange for 3 widgets and also onBlur for listBox
  }
  </code></pre>
  
  <p>I am not sure how to implement this cleanly. Need help. Some example code would be appreciated.</p>