Feature Request: Collapsable opt groups #232
Description
Would like this as an option on the multiselect.
// Make Optgroups collapsible.
var optgroups = $('li.ui-multiselect-optgroup-label').prepend(
'');
optgroups.find('span').click(function() {
$(this).toggleClass('ui-icon-triangle-1-s ui-icon-triangle-1-e'); // ui-icon-triangle-1-s ui-icon-triangle-1-e from jquery-ui
var toggle = $(this).hasClass('ui-icon-triangle-1-s');
$(this).parent().nextUntil('li.ui-multiselect-optgroup-label').toggle(
toggle);
});