title: SWT/JFace Tooltip for Text Control when text in control is too large to be displayed
body: <p>I know this can be implemented fairly easily but I must use a standard functionality for this.
  I need a tooltip to be shown on a text field but only when the text in the text field is to long to be displayed in the field. Tables and Tree's have this functionality when resizeing columns but I didn't find anything similar for text fields.</p>
  
  <p>I didn't manage to find this functionality in Eclipse either so I'm guessing it's not a standard functionality.
  Please prove me wrong:).</p>
  
  <p>Thanks in advance.</p>