/**
* Call all callbacks registered to handle the given hook. Callbacks are called
* one by one, higher priorities first.
*
* @param string $hook_name - Name of the hook
* @param mixed $params - Parameters that are passed to callback function
* @return boolean
*/
public static function call($hook_name, $params = false)
{
if (empty(self::$hooks) or empty(self::$hooks[$hook_name])) {
return true;
}
//reset to defaults
self::$do_default = true;
self::$propagate_limit = 0;
self::$return_status = true;
self::$current_priority = 0;
// get priorities, higher first
$p = array_keys(self::$hooks[$hook_name]);
rsort($p, SORT_NUMERIC);
// process callbacks in order of priorities
foreach ($p as $priority) {
self::$current_priority = $priority;
if (!isset(self::$hooks[$hook_name][$priority])) {
//skip empty
continue;
}
foreach (self::$hooks[$hook_name][$priority] as $callback) {
if (empty($callback) or empty($callback['enabled'])) {
//skip disabled or not set
continue;
}
if ($priority <= self::$propagate_limit) {
// stop further propagation
break 2;
}
// call handler function
if (!file_exists(VIVVO_FS_INSTALL_ROOT . $callback['filename'])) {
continue;
}
require_once VIVVO_FS_INSTALL_ROOT . $callback['filename'];
if ($callback['class']) {
if (!method_exists($callback['class'], $callback['function'])) {
continue;
}
$func = array($callback['class'], $callback['function']);
} else {
$func = $callback['function'];
if (!function_exists($func)) {
continue;
}
}
// do the call
call_user_func_array($func, array($hook_name, &$params));
}
}
return self::$do_default;
}
