private void DiffEditor_Click(object sender, RoutedEventArgs e)
{
if (this.tracker == null)
{
return;
}
var selectionPosition = this.GetEditorSelectionPosition();
var hasChanges = tracker.HasChanges(diffLines, selectionPosition[0], selectionPosition[1]);
btnResetSelected.Visibility = btnStageSelected.Visibility = btnUnStageSelected.Visibility =
(hasChanges ? Visibility.Visible : Visibility.Collapsed);
}
