<ui-select
  ng-model="field"
  ui-select-focus-on="focus-field"
  on-select="onSelect({ field: field })"
>
  <ui-select-match placeholder="Fields...">
    <span
      class="uiSelectMatch--ellipsis"
      tooltip="{{$select.selected.name}}"
    >
      {{$select.selected.name}}
    </span>
  </ui-select-match>
  <ui-select-choices
    class="uiSelectChoices--autoWidth"
    repeat="field in fieldOptions | filter:{ name: $select.search } | orderBy:'name' | sortPrefixFirst:$select.search:'name'"
    group-by="'indexPattern'"
  >
    <div ng-bind-html="field.name | highlight: $select.search"></div>
  </ui-select-choices>
</ui-select>
