/**
* @return array of all the installed rule class names.
*/
protected static function get_rule_classes() {
return get_plugin_list_with_class('quizaccess', '', 'rule.php');
}
/**
* Get list of available import or export formats
* @param string $type 'import' if import list, otherwise export list assumed
* @return array sorted list of import/export formats available
*/
function get_import_export_formats($type)
{
global $CFG;
require_once $CFG->dirroot . '/question/format.php';
$formatclasses = get_plugin_list_with_class('qformat', '', 'format.php');
$fileformatname = array();
foreach ($formatclasses as $component => $formatclass) {
$format = new $formatclass();
if ($type == 'import') {
$provided = $format->provide_import();
} else {
$provided = $format->provide_export();
}
if ($provided) {
list($notused, $fileformat) = explode('_', $component, 2);
$fileformatnames[$fileformat] = get_string('pluginname', $component);
}
}
collatorlib::asort($fileformatnames);
return $fileformatnames;
}
/**
* Returns a lock instance ready for use.
*
* @param array $config
* @return cache_lock_interface
*/
public function create_lock_instance(array $config)
{
if (!array_key_exists('name', $config) || !array_key_exists('type', $config)) {
throw new coding_exception('Invalid cache lock instance provided');
}
$name = $config['name'];
$type = $config['type'];
unset($config['name']);
unset($config['type']);
if ($this->lockplugins === null) {
$this->lockplugins = get_plugin_list_with_class('cachelock', '', 'lib.php');
}
if (!array_key_exists($type, $this->lockplugins)) {
throw new coding_exception('Invalid cache lock type.');
}
$class = $this->lockplugins[$type];
return new $class($name, $config);
}
/**
* Returns an array of lock plugins for which we can add an instance.
*
* Suitable for use within an mform select element.
*
* @return array
*/
public static function get_addable_lock_options()
{
$plugins = get_plugin_list_with_class('cachelock', '', 'lib.php');
$options = array();
$len = strlen('cachelock_');
foreach ($plugins as $plugin => $class) {
$method = "{$class}::can_add_instance";
if (is_callable($method) && !call_user_func($method)) {
// Can't add an instance of this plugin.
continue;
}
$options[substr($plugin, $len)] = get_string('pluginname', $plugin);
}
return $options;
}
