<ul role="listbox" aria-controls="ember-power-select-trigger-{{@select.uniqueId}}" {{did-insert this.addHandlers}} ...attributes> {{#if @select.loading}} {{#if @loadingMessage}} <li class="ember-power-select-option ember-power-select-option--loading-message" role="option" aria-selected="false" aria-disabled="true">{{@loadingMessage}}</li> {{/if}} {{/if}} {{#vertical-collection @options minHeight=30 estimateHeight=6 bufferSize=10 as |opt index|}} <li class="ember-power-select-option" aria-selected="{{ember-power-select-is-selected opt @select.selected}}" aria-disabled={{if opt.disabled "true"}} aria-current="{{eq opt @select.highlighted}}" data-option-index="{{@groupIndex}}{{index}}" role="option"> {{yield opt @select}} </li> {{/vertical-collection}} </ul>