title: How to get selected row data from Vaadin Grid with polymer?
body: <p>I am trying to get the selected row data form vaadin grid using polymer. But I am not able to get.</p>
  
  <p>Here is the my code:</p>
  
  <pre><code>this.mileageGrid = this.$$("#mileageSectionGrid");
           this.mileageGrid.addEventListener('selected-items-changed', function() {
                  var selected = this.mileageGrid.selection.selected();
                  this.selectedRowData = this.mileageGrid.getSelectedRow();
                  this.selectedRowData = this.mileageGrid.selection.getSelectedRow();
                  if (selected.length == 1) {
                      detailsOpenIndex = selected[0];
                      this.callback(detailsOpenIndex);
                      //this.fire("change-mileage", this.mileage);
                  }
          }.bind(this));
  </code></pre>
  
  <p>I didn't get any idea after searching from google and vaadin grid document also.</p>
  
  <p>Can anybody tell me, how to get selected row data?</p>