title: Kendo UI Grid - custom filter
body: <p>I would like to have custom filter on one of the grid columns, in the following way:</p>
  
  <ol>
  <li><p>If the operator is 'is equal to' the user will be able to select a value from a 
  drop-down-list.</p></li>
  <li><p>For the other operators (contains, start with etc.) the user will be able to enter a 
  free text.</p></li>
  </ol>
  
  <p>can anyone explain me how to implement that?</p>
  
  <p>Thanks</p>
  
  <p>Hagai</p>