protected static function get_add_ons($installed = FALSE, $force = FALSE)
{
$add_ons = get_transient('wpim_add_ons');
if ($force) {
$add_ons = FALSE;
}
if (!$add_ons) {
$add_ons = WPIMAPI::make_call('get_add_ons');
set_transient('wpim_add_ons', $add_ons, 12 * HOUR_IN_SECONDS);
}
$add_ons = apply_filters('wpim_add_ons_list', $add_ons);
if (!$installed) {
return $add_ons;
}
$new_add_ons = array();
foreach ($add_ons as $add_on) {
if (isset($add_on->key)) {
$new_add_ons[$add_on->key] = $add_on;
}
}
if ($installed) {
foreach ($new_add_ons as $key => $add_on) {
if (empty($add_on->installed)) {
unset($new_add_ons[$key]);
}
}
}
return $new_add_ons;
}
