<et2-select statustext="Duration of the meeting" id="duration" onchange="app.calendar.set_enddate_visibility" noLang="1" emptyLabel="Use end date"></et2-select>
<et2-button statustext="Close the window" label="Cancel" id="button[cancel]" onclick="document.querySelector('et2-dialog#quick_add').hide()" image="cancel" slot="footer"></et2-button>
<et2-checkbox label="Always use full edit dialog" id="new_event_dialog" statustext="Always use the full edit dialog, not this little dialog" onchange="egw.set_preference('calendar',widget.id,widget.get_value() ? 'edit' : 'add');" slot="footer"></et2-checkbox>