title: Right click and Context menu event on ListViewItem
body: <p>In my current implementation of <code>listview</code> with <code>gridlayout</code> in Javascript, if I right click on an item, a context menu which reads "Copy" shows up. I would like to overwrite this context menu event to select the element instead of showing "Copy". </p>
  
  <p>So I would need to <code>addEventListener</code> on the <code>listViewItem</code> to listen to the context menu event. How will I be able to set the event listener on the listviewitems? </p>
  
  <p>I tried to <code>addEventListener</code> on the <code>listview</code>, but I don't know how to check whether the 
  <code>srcElement</code> is a item or not.</p>