/**
* Constructor - basic setup
*
* @param int $pagemenuid Page menu instance ID
* @param array $links Page menu link records that belong to this page menu
* @param array $data Link data for the links
* @param int $firstlinkid First link ID
* @return void
**/
public function __construct($pagemenuid, $links = NULL, $data = NULL, $firstlinkid = false)
{
$this->pagemenuid = $pagemenuid;
if ($links === NULL) {
$links = get_records('pagemenu_links', 'pagemenuid', $this->pagemenuid);
}
if (!$firstlinkid) {
$firstlinkid = pagemenu_get_first_linkid($this->pagemenuid);
}
if ($data === NULL) {
if (!empty($links)) {
$data = pagemenu_get_link_data($links);
} else {
$data = array();
}
}
if (!empty($links) and !empty($firstlinkid)) {
$linkid = $firstlinkid;
while ($linkid) {
if (array_key_exists($linkid, $data)) {
$datum = $data[$linkid];
} else {
$datum = NULL;
}
$link = $links[$linkid];
$linkid = $link->nextid;
$this->links[$link->id] = mod_pagemenu_link::factory($link->type, $link, $datum);
}
}
$this->init();
}
/**
* Bulk menu builder
*
* @param array $pagemenus An array of pagemenu course module records with id, instance and visible set
* @param string $render The renderer to use for all menus
* @param boolean $menuinfo True, returns menu information object. False, return menu HTML
* @param int $courseid ID of the course that the menus belong
* @return array
**/
function pagemenu_build_menus($pagemenus, $render = 'list', $menuinfo = false, $courseid = NULL)
{
global $COURSE;
if ($courseid === NULL) {
$courseid = $COURSE->id;
}
/// Filter out the menus that the user cannot see
$canviewhidden = has_capability('moodle/course:viewhiddenactivities', get_context_instance(CONTEXT_COURSE, $courseid));
// Load all the context instances at once
$instances = get_context_instance(CONTEXT_MODULE, array_keys($pagemenus));
$pagemenuids = array();
foreach ($pagemenus as $pagemenu) {
if (has_capability('mod/pagemenu:view', $instances[$pagemenu->id]) and ($pagemenu->visible or $canviewhidden)) {
$pagemenuids[$pagemenu->id] = $pagemenu->instance;
}
}
if (empty($pagemenuids)) {
// Cannot see any of them
return false;
}
/// Start fetching links and link data for ALL of the menus
if (!($links = get_records_list('pagemenu_links', 'pagemenuid', implode(',', $pagemenuids)))) {
// None of the menus have links...
return false;
}
$data = pagemenu_get_link_data($links);
/// Find all the first link IDs - this avoids going to the db
/// for each menu or looping through all links for each module
$firstlinkids = array();
foreach ($links as $link) {
if ($link->previd == 0) {
$firstlinkids[$link->pagemenuid] = $link->id;
}
}
$menus = array();
foreach ($pagemenuids as $cmid => $pagemenuid) {
if (array_key_exists($pagemenuid, $firstlinkids)) {
$firstlinkid = $firstlinkids[$pagemenuid];
} else {
$firstlinkid = false;
}
$menus[$cmid] = pagemenu_build_menu($pagemenuid, $render, $menuinfo, $links, $data, $firstlinkid);
}
return $menus;
}
