<div class="ui-component ui-dropdown ui-corner-all" role="select">
    <div class="ui-dropdown-header">
        <bhv:component id="header"></bhv:component>
    </div>
    <div class="ui-dropdown-list ui-shadow-down ui-corner-all" style="display: none">
        <bhv:component id="list"></bhv:component>
    </div>
</div>