title: finder like swing component
body: <p>Does anyone have suggestions how to implement a widget similar to mac's finder in swing?</p>
  
  <p>Things were done in javascript like <a href="http://christianyates.com/blog/jquery/finder-column-view-hierarchical-lists-jquery" rel="nofollow">here</a></p>
  
  <p>I just wonder if it's possible by extending JTree and overwriting paint method?</p>
  
  <p>I don't need a file browser I'm after horizontally expanding menu </p>