title: How to force an update in a Vaadin Grid after a valueChange through the Grid Editor?
body: <p>I would like to update a in the line being edited in the Grid Editor as soon as another value is altered. So for example if I change the currency in a purchase I want the amount to be adjusted for that currency. With that in mind I have:</p>
  
  <pre><code>Grid grid = new Grid();
  grid.getEditor().setEnabled(true);
  
  grid.addColumn(Purchase::getAmount())
      .setEditorBinding(amountField, Purchase::setAmount);
  grid.addColumn(Purchase::getCurrency())
      .setEditorBinding(currencyField, Purchase::setCurrency);
  
  grid.getEditor().getBinder().addValueChangeListener(event -&gt;
  {
      Component component = event.getComponent();
      if(component.equals(currencyField))
      {
          Purchase purchase = binder.getBean();
          purchase.setAmount(amountAdjustedForCurrency(purchase.getCurrency()));
          // How do I update to the amount in the grid for that row?
      }
  });
  </code></pre>
  
  <p>My question is how do I update the amount in the Grid? Even though the bean has been adjusted the screen isn't updated...</p>