Shortcut to display the exposed options form.
public function showBuildGroupForm(&$form, &$form_state) {
if (empty($this->options['is_grouped'])) {
return;
}
$this
->buildExposedFiltersGroupForm($form, $form_state);
// When we click the expose button, we add new gadgets to the form but they
// have no data in $_POST so their defaults get wiped out. This prevents
// these defaults from getting wiped out. This setting will only be TRUE
// during a 2nd pass rerender.
if (!empty($form_state['force_build_group_options'])) {
foreach (element_children($form['group_info']) as $id) {
if (isset($form['group_info'][$id]['#default_value']) && !isset($form['group_info'][$id]['#value'])) {
$form['group_info'][$id]['#value'] = $form['group_info'][$id]['#default_value'];
}
}
}
}