title: draggable rows in a p:dataTable by handle
body: <p>I have a DataTable in which I added drag and drop support for the rows (draggableRows="true"). The problem is that wherever I click inside a row, I can drag it. </p>
  
  <p>What I want is the possibility to drag the row only by a handle, the handle could be a column field with an icon at the left of the row for example (have a look at the screenshot), so if the user clicks on a row outside of the handle, there's no drag support; but if he clicks on the handle, he'll have the possibility to drag the entire row.</p>
  
  <p>How could I implement this?</p>
  
  <p><a href="https://i.stack.imgur.com/8GWHH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8GWHH.png" alt="enter image description here"></a></p>