openproject/frontend/app/templates/work_packages/modals/columns.html

<div class="ng-modal-window">
  <div class="ng-modal-inner">
    <div class="modal-header"><i class="icon-close" ng-click="modal.closeMe()"></i></div>

    <h3>{{ I18n.t('js.label_columns') }}</h3>

    <div cg-busy="vm.promise" class="columns-modal-content">
      <label for="selected_columns" class="hidden-for-sighted">{{ I18n.t('js.description_selected_columns') }}</label>
      <ui-select multiple sortable="true" ng-model="vm.selectedColumns" theme="select2" id="selected_columns" focus>
        <ui-select-match>
          {{$item.title}}
        </ui-select-match>
        <ui-select-choices repeat="column in vm.availableColumns | filter: { title: $select.search }">
          <div ng-bind-html="column.title | highlight: $select.search"></div>
        </ui-select-choices>
      </ui-select>
      <i class="icon icon-help1" data-tooltip="{{ I18n.t('js.work_packages.label_column_multiselect') }}"></i>

    </div>

    <div>
      <button class="button -highlight" ng-click="updateSelectedColumns()">
        {{ I18n.t('js.modals.button_apply') }}
      </button>
      <button class="button" ng-click="modal.closeMe()">
        {{ I18n.t('js.modals.button_cancel') }}
      </button>
    </div>

  </div>
</div>