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Submitted by Anonymous on Wed, 05/28/2008 - 10:38
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<?php// $Id: menu.inc,v 1.255.2.11 2008/04/09 21:11:44 goba Exp $- /**
- * @file
- * API for the Drupal menu system.
- */
- /**
- * @defgroup menu Menu system
- * @{
- * Define the navigation menus, and route page requests to code based on URLs.
- *
- * The Drupal menu system drives both the navigation system from a user
- * perspective and the callback system that Drupal uses to respond to URLs
- * passed from the browser. For this reason, a good understanding of the
- * menu system is fundamental to the creation of complex modules.
- *
- * Drupal's menu system follows a simple hierarchy defined by paths.
- * Implementations of hook_menu() define menu items and assign them to
- * paths (which should be unique). The menu system aggregates these items
- * and determines the menu hierarchy from the paths. For example, if the
- * paths defined were a, a/b, e, a/b/c/d, f/g, and a/b/h, the menu system
- * would form the structure:
- * - a
- * - a/b
- * - a/b/c/d
- * - a/b/h
- * - e
- * - f/g
- * Note that the number of elements in the path does not necessarily
- * determine the depth of the menu item in the tree.
- *
- * When responding to a page request, the menu system looks to see if the
- * path requested by the browser is registered as a menu item with a
- * callback. If not, the system searches up the menu tree for the most
- * complete match with a callback it can find. If the path a/b/i is
- * requested in the tree above, the callback for a/b would be used.
- *
- * The found callback function is called with any arguments specified
- * in the "page arguments" attribute of its menu item. The
- * attribute must be an array. After these arguments, any remaining
- * components of the path are appended as further arguments. In this
- * way, the callback for a/b above could respond to a request for
- * a/b/i differently than a request for a/b/j.
- *
- * For an illustration of this process, see page_example.module.
- *
- * Access to the callback functions is also protected by the menu system.
- * The "access callback" with an optional "access arguments" of each menu
- * item is called before the page callback proceeds. If this returns TRUE,
- * then access is granted; if FALSE, then access is denied. Menu items may
- * omit this attribute to use the value provided by an ancestor item.
- *
- * In the default Drupal interface, you will notice many links rendered as
- * tabs. These are known in the menu system as "local tasks", and they are
- * rendered as tabs by default, though other presentations are possible.
- * Local tasks function just as other menu items in most respects. It is
- * convention that the names of these tasks should be short verbs if
- * possible. In addition, a "default" local task should be provided for
- * each set. When visiting a local task's parent menu item, the default
- * local task will be rendered as if it is selected; this provides for a
- * normal tab user experience. This default task is special in that it
- * links not to its provided path, but to its parent item's path instead.
- * The default task's path is only used to place it appropriately in the
- * menu hierarchy.
- *
- * Everything described so far is stored in the menu_router table. The
- * menu_links table holds the visible menu links. By default these are
- * derived from the same hook_menu definitions, however you are free to
- * add more with menu_link_save().
- */
- /**
- * @name Menu flags
- * @{
- * Flags for use in the "type" attribute of menu items.
- */
define('MENU_IS_ROOT', 0x0001);define('MENU_VISIBLE_IN_TREE', 0x0002);define('MENU_VISIBLE_IN_BREADCRUMB', 0x0004);define('MENU_LINKS_TO_PARENT', 0x0008);define('MENU_MODIFIED_BY_ADMIN', 0x0020);define('MENU_CREATED_BY_ADMIN', 0x0040);define('MENU_IS_LOCAL_TASK', 0x0080);/**- * @} End of "Menu flags".
- */
- /**
- * @name Menu item types
- * @{
- * Menu item definitions provide one of these constants, which are shortcuts for
- * combinations of the above flags.
- */
- /**
- * Normal menu items show up in the menu tree and can be moved/hidden by
- * the administrator. Use this for most menu items. It is the default value if
- * no menu item type is specified.
- */
define('MENU_NORMAL_ITEM', MENU_VISIBLE_IN_TREE | MENU_VISIBLE_IN_BREADCRUMB);/**- * Callbacks simply register a path so that the correct function is fired
- * when the URL is accessed. They are not shown in the menu.
- */
define('MENU_CALLBACK', MENU_VISIBLE_IN_BREADCRUMB);/**- * Modules may "suggest" menu items that the administrator may enable. They act
- * just as callbacks do until enabled, at which time they act like normal items.
- * Note for the value: 0x0010 was a flag which is no longer used, but this way
- * the values of MENU_CALLBACK and MENU_SUGGESTED_ITEM are separate.
- */
define('MENU_SUGGESTED_ITEM', MENU_VISIBLE_IN_BREADCRUMB | 0x0010);/**- * Local tasks are rendered as tabs by default. Use this for menu items that
- * describe actions to be performed on their parent item. An example is the path
- * "node/52/edit", which performs the "edit" task on "node/52".
- */
define('MENU_LOCAL_TASK', MENU_IS_LOCAL_TASK);/**- * Every set of local tasks should provide one "default" task, that links to the
- * same path as its parent when clicked.
- */
define('MENU_DEFAULT_LOCAL_TASK', MENU_IS_LOCAL_TASK | MENU_LINKS_TO_PARENT);/**- * @} End of "Menu item types".
- */
- /**
- * @name Menu status codes
- * @{
- * Status codes for menu callbacks.
- */
define('MENU_FOUND', 1);define('MENU_NOT_FOUND', 2);define('MENU_ACCESS_DENIED', 3);define('MENU_SITE_OFFLINE', 4);/**- * @} End of "Menu status codes".
- */
- /**
- * @Name Menu tree parameters
- * @{
- * Menu tree
- */
- /**
- * The maximum number of path elements for a menu callback
- */
define('MENU_MAX_PARTS', 7);/**- * The maximum depth of a menu links tree - matches the number of p columns.
- */
define('MENU_MAX_DEPTH', 9);/**- * @} End of "Menu tree parameters".
- */
- /**
- * Returns the ancestors (and relevant placeholders) for any given path.
- *
- * For example, the ancestors of node/12345/edit are:
- * - node/12345/edit
- * - node/12345/%
- * - node/%/edit
- * - node/%/%
- * - node/12345
- * - node/%
- * - node
- *
- * To generate these, we will use binary numbers. Each bit represents a
- * part of the path. If the bit is 1, then it represents the original
- * value while 0 means wildcard. If the path is node/12/edit/foo
- * then the 1011 bitstring represents node/%/edit/foo where % means that
- * any argument matches that part. We limit ourselves to using binary
- * numbers that correspond the patterns of wildcards of router items that
- * actually exists. This list of 'masks' is built in menu_rebuild().
- *
- * @param $parts
- * An array of path parts, for the above example
- * array('node', '12345', 'edit').
- * @return
- * An array which contains the ancestors and placeholders. Placeholders
- * simply contain as many '%s' as the ancestors.
- */
function menu_get_ancestors($parts) {-
$number_parts = count($parts);-
$placeholders = array();-
$ancestors = array();-
$length = $number_parts - 1;-
$end = (1 << $number_parts) - 1;-
$masks = variable_get('menu_masks', array());-
// Only examine patterns that actually exist as router items (the masks).-
foreach ($masks as $i) {- if (
$i > $end) {-
// Only look at masks that are not longer than the path of interest.-
continue;- }
- elseif (
$i < (1 << $length)) {-
// We have exhausted the masks of a given length, so decrease the length.-
--$length;- }
-
$current = '';- for (
$j = $length; $j >= 0; $j--) {- if (
$i & (1 << $j)) {-
$current .= $parts[$length - $j];- }
- else {
-
$current .= '%';- }
- if (
$j) {-
$current .= '/';- }
- }
-
$placeholders[] = "'%s'";-
$ancestors[] = $current;- }
- return array(
$ancestors, $placeholders);- }
/**- * The menu system uses serialized arrays stored in the database for
- * arguments. However, often these need to change according to the
- * current path. This function unserializes such an array and does the
- * necessary change.
- *
- * Integer values are mapped according to the $map parameter. For
- * example, if unserialize($data) is array('view', 1) and $map is
- * array('node', '12345') then 'view' will not be changed because
- * it is not an integer, but 1 will as it is an integer. As $map[1]
- * is '12345', 1 will be replaced with '12345'. So the result will
- * be array('node_load', '12345').
- *
- * @param @data
- * A serialized array.
- * @param @map
- * An array of potential replacements.
- * @return
- * The $data array unserialized and mapped.
- */
function menu_unserialize($data, $map) {- if (
$data = unserialize($data)) {- foreach (
$data as $k => $v) {- if (
is_int($v)) {-
$data[$k] = isset($map[$v]) ? $map[$v] : '';- }
- }
- return
$data;- }
- else {
- return array();
- }
- }
/**- * Replaces the statically cached item for a given path.
- *
- * @param $path
- * The path.
- * @param $router_item
- * The router item. Usually you take a router entry from menu_get_item and
- * set it back either modified or to a different path. This lets you modify the
- * navigation block, the page title, the breadcrumb and the page help in one
- * call.
- */
function menu_set_item($path, $router_item) {-
menu_get_item($path, $router_item);- }
/**- * Get a router item.
- *
- * @param $path
- * The path, for example node/5. The function will find the corresponding
- * node/% item and return that.
- * @param $router_item
- * Internal use only.
- * @return
- * The router item, an associate array corresponding to one row in the
- * menu_router table. The value of key map holds the loaded objects. The
- * value of key access is TRUE if the current user can access this page.
- * The values for key title, page_arguments, access_arguments will be
- * filled in based on the database values and the objects loaded.
- */
function menu_get_item($path = NULL, $router_item = NULL) {- static
$router_items;- if (!isset(
$path)) {-
$path = $_GET['q'];- }
- if (isset(
$router_item)) {-
$router_items[$path] = $router_item;- }
- if (!isset(
$router_items[$path])) {-
$original_map = arg(NULL, $path);-
$parts = array_slice($original_map, 0, MENU_MAX_PARTS);- list(
$ancestors, $placeholders) = menu_get_ancestors($parts);- if (
$router_item = db_fetch_array(db_query_range('SELECT * FROM {menu_router} WHERE path IN ('. implode (',', $placeholders) .') ORDER BY fit DESC', $ancestors, 0, 1))) {-
$map = _menu_translate($router_item, $original_map);- if (
$map === FALSE) {-
$router_items[$path] = FALSE;- return
FALSE;- }
- if (
$router_item['access']) {-
$router_item['map'] = $map;-
$router_item['page_arguments'] = array_merge(menu_unserialize($router_item['page_arguments'], $map), array_slice($map, $router_item['number_parts']));- }
- }
-
$router_items[$path] = $router_item;- }
- return
$router_items[$path];- }
/**- * Execute the page callback associated with the current path
- */
function menu_execute_active_handler($path = NULL) {- if (
_menu_site_is_offline()) {- return
MENU_SITE_OFFLINE;- }
- if (
variable_get('menu_rebuild_needed', FALSE)) {-
menu_rebuild();- }
- if (
$router_item = menu_get_item($path)) {- if (
$router_item['access']) {- if (
$router_item['file']) {- require_once(
$router_item['file']);- }
- return
call_user_func_array($router_item['page_callback'], $router_item['page_arguments']);- }
- else {
- return
MENU_ACCESS_DENIED;- }
- }
- return
MENU_NOT_FOUND;- }
/**- * Loads objects into the map as defined in the $item['load_functions'].
- *
- * @param $item
- * A menu router or menu link item
- * @param $map
- * An array of path arguments (ex: array('node', '5'))
- * @return
- * Returns TRUE for success, FALSE if an object cannot be loaded.
- * Names of object loading functions are placed in $item['load_functions'].
- * Loaded objects are placed in $map[]; keys are the same as keys in the
- * $item['load_functions'] array.
- * $item['access'] is set to FALSE if an object cannot be loaded.
- */
function _menu_load_objects(&$item, &$map) {- if (
$load_functions = $item['load_functions']) {-
// If someone calls this function twice, then unserialize will fail.-
if ($load_functions_unserialized = unserialize($load_functions)) {-
$load_functions = $load_functions_unserialized;- }
-
$path_map = $map;- foreach (
$load_functions as $index => $function) {- if (
$function) {-
$value = isset($path_map[$index]) ? $path_map[$index] : '';- if (
is_array($function)) {-
// Set up arguments for the load function. These were pulled from- // 'load arguments' in the hook_menu() entry, but they need
- // some processing. In this case the $function is the key to the
- // load_function array, and the value is the list of arguments.
-
list($function, $args) = each($function);-
$load_functions[$index] = $function;-
// Some arguments are placeholders for dynamic items to process.-
foreach ($args as $i => $arg) {- if (
$arg === '%index') {-
// Pass on argument index to the load function, so multiple- // occurances of the same placeholder can be identified.
-
$args[$i] = $index;- }
- if (
$arg === '%map') {-
// Pass on menu map by reference. The accepting function must- // also declare this as a reference if it wants to modify
- // the map.
-
$args[$i] = &$map;- }
- if (
is_int($arg)) {-
$args[$i] = isset($path_map[$arg]) ? $path_map[$arg] : '';- }
- }
-
array_unshift($args, $value);-
$return = call_user_func_array($function, $args);- }
- else {
-
$return = $function($value);- }
-
// If callback returned an error or there is no callback, trigger 404.-
if ($return === FALSE) {-
$item['access'] = FALSE;-
$map = FALSE;- return
FALSE;- }
-
$map[$index] = $return;- }
- }
-
$item['load_functions'] = $load_functions;- }
- return
TRUE;- }
/**- * Check access to a menu item using the access callback
- *
- * @param $item
- * A menu router or menu link item
- * @param $map
- * An array of path arguments (ex: array('node', '5'))
- * @return
- * $item['access'] becomes TRUE if the item is accessible, FALSE otherwise.
- */
function _menu_check_access(&$item, $map) {-
// Determine access callback, which will decide whether or not the current- // user has access to this path.
-
$callback = empty($item['access_callback']) ? 0 : trim($item['access_callback']);-
// Check for a TRUE or FALSE value.-
if (is_numeric($callback)) {-
$item['access'] = (bool)$callback;- }
- else {
-
$arguments = menu_unserialize($item['access_arguments'], $map);-
// As call_user_func_array is quite slow and user_access is a very common- // callback, it is worth making a special case for it.
-
if ($callback == 'user_access') {-
$item['access'] = (count($arguments) == 1) ? user_access($arguments[0]) : user_access($arguments[0], $arguments[1]);- }
- else {
-
$item['access'] = call_user_func_array($callback, $arguments);- }
- }
- }
/**- * Localize the router item title using t() or another callback.
- *
- * Translate the title and description to allow storage of English title
- * strings in the database, yet display of them in the language required
- * by the current user.
- *
- * @param $item
- * A menu router item or a menu link item.
- * @param $map
- * The path as an array with objects already replaced. E.g., for path
- * node/123 $map would be array('node', $node) where $node is the node
- * object for node 123.
- * @param $link_translate
- * TRUE if we are translating a menu link item; FALSE if we are
- * translating a menu router item.
- * @return
- * No return value.
- * $item['title'] is localized according to $item['title_callback'].
- * If an item's callback is check_plain(), $item['options']['html'] becomes
- * TRUE.
- * $item['description'] is translated using t().
- * When doing link translation and the $item['options']['attributes']['title']
- * (link title attribute) matches the description, it is translated as well.
- */
function _menu_item_localize(&$item, $map, $link_translate = FALSE) {-
$callback = $item['title_callback'];-
$item['localized_options'] = $item['options'];-
// If we are not doing link translation or if the title matches the- // link title of its router item, localize it.
-
if (!$link_translate || (!empty($item['title']) && ($item['title'] == $item['link_title']))) {-
// t() is a special case. Since it is used very close to all the time,- // we handle it directly instead of using indirect, slower methods.
-
if ($callback == 't') {- if (empty(
$item['title_arguments'])) {-
$item['title'] = t($item['title']);- }
- else {
-
$item['title'] = t($item['title'], menu_unserialize($item['title_arguments'], $map));- }
- }
- elseif (
$callback) {- if (empty(
$item['title_arguments'])) {-
$item['title'] = $callback($item['title']);- }
- else {
-
$item['title'] = call_user_func_array($callback, menu_unserialize($item['title_arguments'], $map));- }
-
// Avoid calling check_plain again on l() function.-
if ($callback == 'check_plain') {-
$item['localized_options']['html'] = TRUE;- }
- }
- }
- elseif (
$link_translate) {-
$item['title'] = $item['link_title'];- }
-
// Translate description, see the motivation above.-
if (!empty($item['description'])) {-
$original_description = $item['description'];-
$item['description'] = t($item['description']);- if (
$link_translate && $item['options']['attributes']['title'] == $original_description) {-
$item['localized_options']['attributes']['title'] = $item['description'];- }
- }
- }
/**- * Handles dynamic path translation and menu access control.
- *
- * When a user arrives on a page such as node/5, this function determines
- * what "5" corresponds to, by inspecting the page's menu path definition,
- * node/%node. This will call node_load(5) to load the corresponding node
- * object.
- *
- * It also works in reverse, to allow the display of tabs and menu items which
- * contain these dynamic arguments, translating node/%node to node/5.
- *
- * Translation of menu item titles and descriptions are done here to
- * allow for storage of English strings in the database, and translation
- * to the language required to generate the current page
- *
- * @param $router_item
- * A menu router item
- * @param $map
- * An array of path arguments (ex: array('node', '5'))
- * @param $to_arg
- * Execute $item['to_arg_functions'] or not. Use only if you want to render a
- * path from the menu table, for example tabs.
- * @return
- * Returns the map with objects loaded as defined in the
- * $item['load_functions. $item['access'] becomes TRUE if the item is
- * accessible, FALSE otherwise. $item['href'] is set according to the map.
- * If an error occurs during calling the load_functions (like trying to load
- * a non existing node) then this function return FALSE.
- */
function _menu_translate(&$router_item, $map, $to_arg = FALSE) {-
$path_map = $map;- if (!
_menu_load_objects($router_item, $map)) {-
// An error occurred loading an object.-
$router_item['access'] = FALSE;- return
FALSE;- }
- if (
$to_arg) {-
_menu_link_map_translate($path_map, $router_item['to_arg_functions']);- }
-
// Generate the link path for the page request or local tasks.-
$link_map = explode('/', $router_item['path']);- for (
$i = 0; $i < $router_item['number_parts']; $i++) {- if (
$link_map[$i] == '%') {-
$link_map[$i] = $path_map[$i];- }
- }
-
$router_item['href'] = implode('/', $link_map);-
$router_item['options'] = array();-
_menu_check_access($router_item, $map);-
_menu_item_localize($router_item, $map);- return
$map;- }
/**- * This function translates the path elements in the map using any to_arg
- * helper function. These functions take an argument and return an object.
- * See http://drupal.org/node/109153 for more information.
- *
- * @param map
- * An array of path arguments (ex: array('node', '5'))
- * @param $to_arg_functions
- * An array of helper function (ex: array(2 => 'menu_tail_to_arg'))
- */
function _menu_link_map_translate(&$map, $to_arg_functions) {- if (
$to_arg_functions) {-
$to_arg_functions = unserialize($to_arg_functions);- foreach (
$to_arg_functions as $index => $function) {-
// Translate place-holders into real values.-
$arg = $function(!empty($map[$index]) ? $map[$index] : '', $map, $index);- if (!empty(
$map[$index]) || isset($arg)) {-
$map[$index] = $arg;- }
- else {
- unset(
$map[$index]);- }
- }
- }
- }
- function
menu_tail_to_arg($arg, $map, $index) {- return
implode('/', array_slice($map, $index));- }
/**- * This function is similar to _menu_translate() but does link-specific
- * preparation such as always calling to_arg functions.
- *
- * @param $item
- * A menu link
- * @return
- * Returns the map of path arguments with objects loaded as defined in the
- * $item['load_functions']:
- * - $item['access'] becomes TRUE if the item is accessible, FALSE otherwise.
- * - $item['href'] is generated from link_path, possibly by to_arg functions.
- * - $item['title'] is generated from link_title, and may be localized.
- * - $item['options'] is unserialized; it is also changed within the call
- * here to $item['localized_options'] by _menu_item_localize().
- */
function _menu_link_translate(&$item) {-
$item['options'] = unserialize($item['options']);- if (
$item['external']) {-
$item['access'] = 1;-
$map = array();-
$item['href'] = $item['link_path'];-
$item['title'] = $item['link_title'];-
$item['localized_options'] = $item['options'];- }
- else {
-
$map = explode('/', $item['link_path']);-
_menu_link_map_translate($map, $item['to_arg_functions']);-
$item['href'] = implode('/', $map);-
// Note - skip callbacks without real values for their arguments.-
if (strpos($item['href'], '%') !== FALSE) {-
$item['access'] = FALSE;- return
FALSE;- }
-
// menu_tree_check_access() may set this ahead of time for links to nodes.-
if (!isset($item['access'])) {- if (!
_menu_load_objects($item, $map)) {-
// An error occurred loading an object.-
$item['access'] = FALSE;- return
FALSE;- }
-
_menu_check_access($item, $map);- }
-
_menu_item_localize($item, $map, TRUE);- }
-
-
// Allow other customizations - e.g. adding a page-specific query string to the- // options array. For performance reasons we only invoke this hook if the link
- // has the 'alter' flag set in the options array.
-
if (!empty($item['options']['alter'])) {-
drupal_alter('translated_menu_link', $item, $map);- }
-
- return
$map;- }
/**- * Get a loaded object from a router item.
- *
- * menu_get_object() will provide you the current node on paths like node/5,
- * node/5/revisions/48 etc. menu_get_object('user') will give you the user
- * account on user/5 etc. Note - this function should never be called within a
- * _to_arg function (like user_current_to_arg()) since this may result in an
- * infinite recursion.
- *
- * @param $type
- * Type of the object. These appear in hook_menu definitons as %type. Core
- * provides aggregator_feed, aggregator_category, contact, filter_format,
- * forum_term, menu, menu_link, node, taxonomy_vocabulary, user. See the
- * relevant {$type}_load function for more on each. Defaults to node.
- * @param $position
- * The expected position for $type object. For node/%node this is 1, for
- * comment/reply/%node this is 2. Defaults to 1.
- * @param $path
- * See menu_get_item() for more on this. Defaults to the current path.
- */
function menu_get_object($type = 'node', $position = 1, $path = NULL) {-
$router_item = menu_get_item($path);- if (isset(
$router_item['load_functions'][$position]) && !empty($router_item['map'][$position]) && $router_item['load_functions'][$position] == $type .'_load') {- return
$router_item['map'][$position];- }
- }
/**- * Render a menu tree based on the current path.
- *
- * The tree is expanded based on the current path and dynamic paths are also
- * changed according to the defined to_arg functions (for example the 'My account'
- * link is changed from user/% to a link with the current user's uid).
- *
- * @param $menu_name
- * The name of the menu.
- * @return
- * The rendered HTML of that menu on the current page.
- */
function menu_tree($menu_name = 'navigation') {- static
$menu_output = array();- if (!isset(
$menu_output[$menu_name])) {-
$tree = menu_tree_page_data($menu_name);-
$menu_output[$menu_name] = menu_tree_output($tree);- }
- return
$menu_output[$menu_name];- }
/**- * Returns a rendered menu tree.
- *
- * @param $tree
- * A data structure representing the tree as returned from menu_tree_data.
- * @return
- * The rendered HTML of that data structure.
- */
function menu_tree_output($tree) {-
$output = '';-
$items = array();-
// Pull out just the menu items we are going to render so that we- // get an accurate count for the first/last classes.
-
foreach ($tree as $data) {- if (!
$data['link']['hidden']) {-
$items[] = $data;- }
- }
-
$num_items = count($items);- foreach (
$items as $i => $data) {-
$extra_class = NULL;- if (
$i == 0) {-
$extra_class = 'first';- }
- if (
$i == $num_items - 1) {-
$extra_class = 'last';- }
-
$link = theme('menu_item_link', $data['link']);- if (
$data['below']) {-
$output .= theme('menu_item', $link, $data['link']['has_children'], menu_tree_output($data['below']), $data['link']['in_active_trail'], $extra_class);- }
- else {
-
$output .= theme('menu_item', $link, $data['link']['has_children'], '', $data['link']['in_active_trail'], $extra_class);- }
- }
- return
$output ? theme('menu_tree', $output) : '';- }
/**- * Get the data structure representing a named menu tree.
- *
- * Since this can be the full tree including hidden items, the data returned
- * may be used for generating an an admin interface or a select.
- *
- * @param $menu_name
- * The named menu links to return
- * @param $item
- * A fully loaded menu link, or NULL. If a link is supplied, only the
- * path to root will be included in the returned tree- as if this link
- * represented the current page in a visible menu.
- * @return
- * An tree of menu links in an array, in the order they should be rendered.
- */
function menu_tree_all_data($menu_name = 'navigation', $item = NULL) {- static
$tree = array();-
// Use $mlid as a flag for whether the data being loaded is for the whole tree.-
$mlid = isset($item['mlid']) ? $item['mlid'] : 0;-
// Generate a cache ID (cid) specific for this $menu_name and $item.-
$cid = 'links:'. $menu_name .':all-cid:'. $mlid;- if (!isset(
$tree[$cid])) {-
// If the static variable doesn't have the data, check {cache_menu}.-
$cache = cache_get($cid, 'cache_menu');- if (
$cache && isset($cache->data)) {-
// If the cache entry exists, it will just be the cid for the actual data.- // This avoids duplication of large amounts of data.
-
$cache = cache_get($cache->data, 'cache_menu');- if (
$cache && isset($cache->data)) {-
$data = $cache->data;- }
- }
-
// If the tree data was not in the cache, $data will be NULL.-
if (!isset($data)) {-
// Build and run the query, and build the tree.-
if ($mlid) {-
// The tree is for a single item, so we need to match the values in its- // p columns and 0 (the top level) with the plid values of other links.
-
$args = array(0);- for (
$i = 1; $i < MENU_MAX_DEPTH; $i++) {-
$args[] = $item["p$i"];- }
-
$args = array_unique($args);-
$placeholders = implode(', ', array_fill(0, count($args), '%d'));-
$where = ' AND ml.plid IN ('. $placeholders .')';-
$parents = $args;-
$parents[] = $item['mlid'];- }
- else {
-
// Get all links in this menu.-
$where = '';-
$args = array();-
$parents = array();- }
-
array_unshift($args, $menu_name);-
// Select the links from the table, and recursively build the tree. We- // LEFT JOIN since there is no match in {menu_router} for an external
- // link.
-
$data['tree'] = menu_tree_data(db_query("- SELECT m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.title, m.title_callback, m.title_arguments, m.type, m.description, ml.*
- FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
- WHERE ml.menu_name = '%s'"
. $where ."- ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC"
, $args), $parents);-
$data['node_links'] = array();-
menu_tree_collect_node_links($data['tree'], $data['node_links']);-
// Cache the data, if it is not already in the cache.-
$tree_cid = _menu_tree_cid($menu_name, $data);- if (!
cache_get($tree_cid, 'cache_menu')) {-
cache_set($tree_cid, $data, 'cache_menu');- }
-
// Cache the cid of the (shared) data using the menu and item-specific cid.-
cache_set($cid, $tree_cid, 'cache_menu');- }
-
// Check access for the current user to each item in the tree.-
menu_tree_check_access($data['tree'], $data['node_links']);-
$tree[$cid] = $data['tree'];- }
- return
$tree[$cid];- }
/**- * Get the data structure representing a named menu tree, based on the current page.
- *
- * The tree order is maintained by storing each parent in an individual
- * field, see http://drupal.org/node/141866 for more.
- *
- * @param $menu_name
- * The named menu links to return
- * @return
- * An array of menu links, in the order they should be rendered. The array
- * is a list of associative arrays -- these have two keys, link and below.
- * link is a menu item, ready for theming as a link. Below represents the
- * submenu below the link if there is one, and it is a subtree that has the
- * same structure described for the top-level array.
- */
function menu_tree_page_data($menu_name = 'navigation') {- static
$tree = array();-
// Load the menu item corresponding to the current page.-
if ($item = menu_get_item()) {-
// Generate a cache ID (cid) specific for this page.-
$cid = 'links:'. $menu_name .':page-cid:'. $item['href'] .':'. (int)$item['access'];- if (!isset(
$tree[$cid])) {-
// If the static variable doesn't have the data, check {cache_menu}.-
$cache = cache_get($cid, 'cache_menu');- if (
$cache && isset($cache->data)) {-
// If the cache entry exists, it will just be the cid for the actual data.- // This avoids duplication of large amounts of data.
-
$cache = cache_get($cache->data, 'cache_menu');- if (
$cache && isset($cache->data)) {-
$data = $cache->data;- }
- }
-
// If the tree data was not in the cache, $data will be NULL.-
if (!isset($data)) {-
// Build and run the query, and build the tree.-
if ($item['access']) {-
// Check whether a menu link exists that corresponds to the current path.-
$args = array($menu_name, $item['href']);-
$placeholders = "'%s'";- if (
drupal_is_front_page()) {-
$args[] = '<front>';-
$placeholders .= ", '%s'";- }
-
$parents = db_fetch_array(db_query("SELECT p1, p2, p3, p4, p5, p6, p7, p8 FROM {menu_links} WHERE menu_name = '%s' AND link_path IN (". $placeholders .")", $args));- if (empty(
$parents)) {-
// If no link exists, we may be on a local task that's not in the links.- // TODO: Handle the case like a local task on a specific node in the menu.
-
$parents = db_fetch_array(db_query("SELECT p1, p2, p3, p4, p5, p6, p7, p8 FROM {menu_links} WHERE menu_name = '%s' AND link_path = '%s'", $menu_name, $item['tab_root']));- }
-
// We always want all the top-level links with plid == 0.-
$parents[] = '0';-
// Use array_values() so that the indices are numeric for array_merge().-
$args = $parents = array_unique(array_values($parents));-
$placeholders = implode(', ', array_fill(0, count($args), '%d'));-
$expanded = variable_get('menu_expanded', array());-
// Check whether the current menu has any links set to be expanded.-
if (in_array($menu_name, $expanded)) {-
// Collect all the links set to be expanded, and then add all of- // their children to the list as well.
-
do {-
$result = db_query("SELECT mlid FROM {menu_links} WHERE menu_name = '%s' AND expanded = 1 AND has_children = 1 AND plid IN (". $placeholders .') AND mlid NOT IN ('. $placeholders .')', array_merge(array($menu_name), $args, $args));-
$num_rows = FALSE;- while (
$item = db_fetch_array($result)) {-
$args[] = $item['mlid'];-
$num_rows = TRUE;- }
-
$placeholders = implode(', ', array_fill(0, count($args), '%d'));- } while (
$num_rows);- }
-
array_unshift($args, $menu_name);- }
- else {
-
// Show only the top-level menu items when access is denied.-
$args = array($menu_name, '0');-
$placeholders = '%d';-
$parents = array();- }
-
// Select the links from the table, and recursively build the tree. We- // LEFT JOIN since there is no match in {menu_router} for an external
- // link.
-
$data['tree'] = menu_tree_data(db_query("- SELECT m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.title, m.title_callback, m.title_arguments, m.type, m.description, ml.*
- FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
- WHERE ml.menu_name = '%s' AND ml.plid IN ("
. $placeholders .")- ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC"
, $args), $parents);-
$data['node_links'] = array();-
menu_tree_collect_node_links($data['tree'], $data['node_links']);-
// Cache the data, if it is not already in the cache.-
$tree_cid = _menu_tree_cid($menu_name, $data);- if (!
cache_get($tree_cid, 'cache_menu')) {-
cache_set($tree_cid, $data, 'cache_menu');- }
-
// Cache the cid of the (shared) data using the page-specific cid.-
cache_set($cid, $tree_cid, 'cache_menu');- }
-
// Check access for the current user to each item in the tree.-
menu_tree_check_access($data['tree'], $data['node_links']);-
$tree[$cid] = $data['tree'];- }
- return
$tree[$cid];- }
- return array();
- }
/**- * Helper function - compute the real cache ID for menu tree data.
- */
function _menu_tree_cid($menu_name, $data) {- return
'links:'. $menu_name .':tree-data:'. md5(serialize($data));- }
/**- * Recursive helper function - collect node links.
- */
function menu_tree_collect_node_links(&$tree, &$node_links) {- foreach (
$tree as $key => $v) {- if (
$tree[$key]['link']['router_path'] == 'node/%') {-
$nid = substr($tree[$key]['link']['link_path'], 5);- if (
is_numeric($nid)) {-
$node_links[$nid][$tree[$key]['link']['mlid']] = &$tree[$key]['link'];-
$tree[$key]['link']['access'] = FALSE;- }
- }
- if (
$tree[$key]['below']) {-
menu_tree_collect_node_links($tree[$key]['below'], $node_links);- }
- }
- }
/**- * Check access and perform other dynamic operations for each link in the tree.
- */
function menu_tree_check_access(&$tree, $node_links = array()) {- if (
$node_links) {-
// Use db_rewrite_sql to evaluate view access without loading each full node.-
$nids = array_keys($node_links);-
$placeholders = '%d'. str_repeat(', %d', count($nids) - 1);-
$result = db_query(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.status = 1 AND n.nid IN (". $placeholders .")"), $nids);- while (
$node = db_fetch_array($result)) {-
$nid = $node['nid'];- foreach (
$node_links[$nid] as $mlid => $link) {-
$node_links[$nid][$mlid]['access'] = TRUE;- }
- }
- }
-
_menu_tree_check_access($tree);- return;
- }
/**- * Recursive helper function for menu_tree_check_access()
- */
function _menu_tree_check_access(&$tree) {-
$new_tree = array();- foreach (
$tree as $key => $v) {-
$item = &$tree[$key]['link'];-
_menu_link_translate($item);- if (
$item['access']) {- if (
$tree[$key]['below']) {-
_menu_tree_check_access($tree[$key]['below']);- }
-
// The weights are made a uniform 5 digits by adding 50000 as an offset.- // After _menu_link_translate(), $item['title'] has the localized link title.
- // Adding the mlid to the end of the index insures that it is unique.
-
$new_tree[(50000 + $item['weight']) .' '. $item['title'] .' '. $item['mlid']] = $tree[$key];- }
- }
-
// Sort siblings in the tree based on the weights and localized titles.-
ksort($new_tree);-
$tree = $new_tree;- }
/**- * Build the data representing a menu tree.
- *
- * @param $result
- * The database result.
- * @param $parents
- * An array of the plid values that represent the path from the current page
- * to the root of the menu tree.
- * @param $depth
- * The depth of the current menu tree.
- * @return
- * See menu_tree_page_data for a description of the data structure.
- */
function menu_tree_data($result = NULL, $parents = array(), $depth = 1) {- list(,
$tree) = _menu_tree_data($result, $parents, $depth);- return
$tree;- }
/**- * Recursive helper function to build the data representing a menu tree.
- *
- * The function is a bit complex because the rendering of an item depends on
- * the next menu item. So we are always rendering the element previously
- * processed not the current one.
- */
function _menu_tree_data($result, $parents, $depth, $previous_element = '') {-
$remnant = NULL;-
$tree = array();- while (
$item = db_fetch_array($result)) {-
// We need to determine if we're on the path to root so we can later build- // the correct active trail and breadcrumb.
-
$item['in_active_trail'] = in_array($item['mlid'], $parents);-
// The current item is the first in a new submenu.-
if ($item['depth'] > $depth) {-
// _menu_tree returns an item and the menu tree structure.-
list($item, $below) = _menu_tree_data($result, $parents, $item['depth'], $item);- if (
$previous_element) {-
$tree[$previous_element['mlid']] = array(-
'link' => $previous_element,-
'below' => $below,- );
- }
- else {
-
$tree = $below;- }
-
// We need to fall back one level.-
if (!isset($item) || $item['depth'] < $depth) {- return array(
$item, $tree);- }
-
// This will be the link to be output in the next iteration.-
$previous_element = $item;- }
-
// We are at the same depth, so we use the previous element.-
elseif ($item['depth'] == $depth) {- if (
$previous_element) {-
// Only the first time.-
$tree[$previous_element['mlid']] = array(-
'link' => $previous_element,-
'below' => FALSE,- );
- }
-
// This will be the link to be output in the next iteration.-
$previous_element = $item;- }
-
// The submenu ended with the previous item, so pass back the current item.-
else {-
$remnant = $item;- break;
- }
- }
- if (
$previous_element) {-
// We have one more link dangling.-
$tree[$previous_element['mlid']] = array(-
'link' => $previous_element,-
'below' => FALSE,- );
- }
- return array(
$remnant, $tree);- }
/**- * Generate the HTML output for a single menu link.
- *
- * @ingroup themeable
- */
function theme_menu_item_link($link) {- if (empty(
$link['localized_options'])) {-
$link['localized_options'] = array();- }
- return
l($link['title'], $link['href'], $link['localized_options']);- }
/**- * Generate the HTML output for a menu tree
- *
- * @ingroup themeable
- */
function theme_menu_tree($tree) {- return
'<ul class="menu">'. $tree .'</ul>';- }
/**- * Generate the HTML output for a menu item and submenu.
- *
- * @ingroup themeable
- */
function theme_menu_item($link, $has_children, $menu = '', $in_active_trail = FALSE, $extra_class = NULL) {-
$class = ($menu ? 'expanded' : ($has_children ? 'collapsed' : 'leaf'));- if (!empty(
$extra_class)) {-
$class .= ' '. $extra_class;- }
- if (
$in_active_trail) {-
$class .= ' active-trail';- }
- return
'<li class="'. $class .'">'. $link . $menu ."</li>\n";- }
/**- * Generate the HTML output for a single local task link.
- *
- * @ingroup themeable
- */
function theme_menu_local_task($link, $active = FALSE) {- return
'<li '. ($active ? 'class="active" ' : '') .'>'. $link ."</li>\n";- }
/**- * Generates elements for the $arg array in the help hook.
- */
function drupal_help_arg($arg = array()) {-
// Note - the number of empty elements should be > MENU_MAX_PARTS.-
return $arg + array('', '', '', '', '', '', '', '', '', '', '', '');- }
/**- * Returns the help associated with the active menu item.
- */
function menu_get_active_help() {-
$output = '';-
$router_path = menu_tab_root_path();-
$arg = drupal_help_arg(arg(NULL));-
$empty_arg = drupal_help_arg();- foreach (
module_list() as $name) {- if (
module_hook($name, 'help')) {-
// Lookup help for this path.-
if ($help = module_invoke($name, 'help', $router_path, $arg)) {-
$output .= $help ."\n";- }
-
// Add "more help" link on admin pages if the module provides a- // standalone help page.
-
if ($arg[0] == "admin" && module_exists('help') && module_invoke($name, 'help', 'admin/help#'. $arg[2], $empty_arg) && $help) {-
$output .= theme("more_help_link", url('admin/help/'. $arg[2]));- }
- }
- }
- return
$output;- }
/**- * Build a list of named menus.
- */
function menu_get_names($reset = FALSE) {- static
$names;- if (
$reset || empty($names)) {-
$names = array();-
$result = db_query("SELECT DISTINCT(menu_name) FROM {menu_links} ORDER BY menu_name");- while (
$name = db_fetch_array($result)) {-
$names[] = $name['menu_name'];- }
- }
- return
$names;- }
/**- * Return an array containing the names of system-defined (default) menus.
- */
function menu_list_system_menus() {- return array(
'navigation', 'primary-links', 'secondary-links');- }
/**- * Return an array of links to be rendered as the Primary links.
- */
function menu_primary_links() {- return
menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'));- }
/**- * Return an array of links to be rendered as the Secondary links.
- */
function menu_secondary_links() {-
// If the secondary menu source is set as the primary menu, we display the- // second level of the primary menu.
-
if (variable_get('menu_secondary_links_source', 'secondary-links') == variable_get('menu_primary_links_source', 'primary-links')) {- return
menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'), 1);- }
- else {
- return
menu_navigation_links(variable_get('menu_secondary_links_source', 'secondary-links'), 0);- }
- }
/**- * Return an array of links for a navigation menu.
- *
- * @param $menu_name
- * The name of the menu.
- * @param $level
- * Optional, the depth of the menu to be returned.
- * @return
- * An array of links of the specified menu and level.
- */
function menu_navigation_links($menu_name, $level = 0) {-
// Don't even bother querying the menu table if no menu is specified.-
if (empty($menu_name)) {- return array();
- }
-
// Get the menu hierarchy for the current page.-
$tree = menu_tree_page_data($menu_name);-
// Go down the active trail until the right level is reached.-
while ($level-- > 0 && $tree) {-
// Loop through the current level's items until we find one that is in trail.-
while ($item = array_shift($tree)) {- if (
$item['link']['in_active_trail']) {-
// If the item is in the active trail, we continue in the subtree.-
$tree = empty($item['below']) ? array() : $item['below'];- break;
- }
- }
- }
-
// Create a single level of links.-
$links = array();- foreach (
$tree as $item) {- if (!
$item['link']['hidden']) {-
$l = $item['link']['localized_options'];-
$l['href'] = $item['link']['href'];-
$l['title'] = $item['link']['title'];-
// Keyed with unique menu id to generate classes from theme_links().-
$links['menu-'. $item['link']['mlid']] = $l;- }
- }
- return
$links;- }
/**- * Collects the local tasks (tabs) for a given level.
- *
- * @param $level
- * The level of tasks you ask for. Primary tasks are 0, secondary are 1.
- * @param $return_root
- * Whether to return the root path for the current page.
- * @return
- * Themed output corresponding to the tabs of the requested level, or
- * router path if $return_root == TRUE. This router path corresponds to
- * a parent tab, if the current page is a default local task.
- */
function menu_local_tasks($level = 0, $return_root = FALSE) {- static
$tabs;- static
$root_path;- if (!isset(
$tabs)) {-
$tabs = array();-
$router_item = menu_get_item();- if (!
$router_item || !$router_item['access']) {- return
'';- }
-
// Get all tabs and the root page.-
$result = db_query("SELECT * FROM {menu_router} WHERE tab_root = '%s' ORDER BY weight, title", $router_item['tab_root']);-
$map = arg();-
$children = array();-
$tasks = array();-
$root_path = $router_item['path'];- while (
$item = db_fetch_array($result)) {-
_menu_translate($item, $map, TRUE);- if (
$item['tab_parent']) {-
// All tabs, but not the root page.-
$children[$item['tab_parent']][$item['path']] = $item;- }
-
// Store the translated item for later use.-
$tasks[$item['path']] = $item;- }
-
// Find all tabs below the current path.-
$path = $router_item['path'];-
// Tab parenting may skip levels, so the number of parts in the path may not- // equal the depth. Thus we use the $depth counter (offset by 1000 for ksort).
-
$depth = 1001;- while (isset(
$children[$path])) {-
$tabs_current = '';-
$next_path = '';-
$count = 0;- foreach (
$children[$path] as $item) {- if (
$item['access']) {-
$count++;-
// The default task is always active.-
if ($item['type'] == MENU_DEFAULT_LOCAL_TASK) {-
// Find the first parent which is not a default local task.-
for ($p = $item['tab_parent']; $tasks[$p]['type'] == MENU_DEFAULT_LOCAL_TASK; $p = $tasks[$p]['tab_parent']);-
$link = theme('menu_item_link', array('href' => $tasks[$p]['href']) + $item);-
$tabs_current .= theme('menu_local_task', $link, TRUE);-
$next_path = $item['path'];- }
- else {
-
$link = theme('menu_item_link', $item);-
$tabs_current .= theme('menu_local_task', $link);- }
- }
- }
-
$path = $next_path;-
$tabs[$depth]['count'] = $count;-
$tabs[$depth]['output'] = $tabs_current;-
$depth++;- }
-
// Find all tabs at the same level or above the current one.-
$parent = $router_item['tab_parent'];-
$path = $router_item['path'];-
$current = $router_item;-
$depth = 1000;- while (isset(
$children[$parent])) {-
$tabs_current = '';-
$next_path = '';-
$next_parent = '';-
$count = 0;- foreach (
$children[$parent] as $item) {- if (
$item['access']) {-
$count++;- if (
$item['type'] == MENU_DEFAULT_LOCAL_TASK) {-
// Find the first parent which is not a default local task.-
for ($p = $item['tab_parent']; $tasks[$p]['type'] == MENU_DEFAULT_LOCAL_TASK; $p = $tasks[$p]['tab_parent']);-
$link = theme('menu_item_link', array('href' => $tasks[$p]['href']) + $item);- if (
$item['path'] == $router_item['path']) {-
$root_path = $tasks[$p]['path'];- }
- }
- else {
-
$link = theme('menu_item_link', $item);- }
-
// We check for the active tab.-
if ($item['path'] == $path) {-
$tabs_current .= theme('menu_local_task', $link, TRUE);-
$next_path = $item['tab_parent'];- if (isset(
$tasks[$next_path])) {-
$next_parent = $tasks[$next_path]['tab_parent'];- }
- }
- else {
-
$tabs_current .= theme('menu_local_task', $link);- }
- }
- }
-
$path = $next_path;-
$parent = $next_parent;-
$tabs[$depth]['count'] = $count;-
$tabs[$depth]['output'] = $tabs_current;-
$depth--;- }
-
// Sort by depth.-
ksort($tabs);-
// Remove the depth, we are interested only in their relative placement.-
$tabs = array_values($tabs);- }
- if (
$return_root) {- return
$root_path;- }
- else {
-
// We do not display single tabs.-
return (isset($tabs[$level]) && $tabs[$level]['count'] > 1) ? $tabs[$level]['output'] : '';- }
- }
/**- * Returns the rendered local tasks at the top level.
- */
function menu_primary_local_tasks() {- return
menu_local_tasks(0);- }
/**- * Returns the rendered local tasks at the second level.
- */
function menu_secondary_local_tasks() {- return
menu_local_tasks(1);- }
/**- * Returns the router path, or the path of the parent tab of a default local task.
- */
function menu_tab_root_path() {- return
menu_local_tasks(0, TRUE);- }
/**- * Returns the rendered local tasks. The default implementation renders them as tabs.
- *
- * @ingroup themeable
- */
function theme_menu_local_tasks() {-
$output = '';- if (
$primary = menu_primary_local_tasks()) {-
$output .= "<ul class=\"tabs primary\">\n". $primary ."</ul>\n";- }
- if (
$secondary = menu_secondary_local_tasks()) {-
$output .= "<ul class=\"tabs secondary\">\n". $secondary ."</ul>\n";- }
- return
$output;- }
/**- * Set (or get) the active menu for the current page - determines the active trail.
- */
function menu_set_active_menu_name($menu_name = NULL) {- static
$active;- if (isset(
$menu_name)) {-
$active = $menu_name;- }
- elseif (!isset(
$active)) {-
$active = 'navigation';- }
- return
$active;- }
/**- * Get the active menu for the current page - determines the active trail.
- */
function menu_get_active_menu_name() {- return
menu_set_active_menu_name();- }
/**- * Set the active path, which determines which page is loaded.
- *
- * @param $path
- * A Drupal path - not a path alias.
- *
- * Note that this may not have the desired effect unless invoked very early
- * in the page load, such as during hook_boot, or unless you call
- * menu_execute_active_handler() to generate your page output.
- */
function menu_set_active_item($path) {-
$_GET['q'] = $path;- }
/**- * Set (or get) the active trail for the current page - the path to root in the menu tree.
- */
function menu_set_active_trail($new_trail = NULL) {- static
$trail;- if (isset(
$new_trail)) {-
$trail = $new_trail;- }
- elseif (!isset(
$trail)) {-
$trail = array();-
$trail[] = array('title' => t('Home'), 'href' => '<front>', 'localized_options' => array(), 'type' => 0);-
$item = menu_get_item();-
// Check whether the current item is a local task (displayed as a tab).-
if ($item['tab_parent']) {-
// The title of a local task is used for the tab, never the page title.- // Thus, replace it with the item corresponding to the root path to get
- // the relevant href and title. For example, the menu item corresponding
- // to 'admin' is used when on the 'By module' tab at 'admin/by-module'.
-
$parts = explode('/', $item['tab_root']);-
$args = arg();-
// Replace wildcards in the root path using the current path.-
foreach ($parts as $index => $part) {- if (
$part == '%') {-
$parts[$index] = $args[$index];- }
- }
-
// Retrieve the menu item using the root path after wildcard replacement.-
$root_item = menu_get_item(implode('/', $parts));- if (
$root_item && $root_item['access']) {-
$item = $root_item;- }
- }
-
$tree = menu_tree_page_data(menu_get_active_menu_name());- list(
$key, $curr) = each($tree);- while (
$curr) {-
// Terminate the loop when we find the current path in the active trail.-
if ($curr['link']['href'] == $item['href']) {-
$trail[] = $curr['link'];-
$curr = FALSE;- }
- else {
-
// Move to the child link if it's in the active trail.-
if ($curr['below'] && $curr['link']['in_active_trail']) {-
$trail[] = $curr['link'];-
$tree = $curr['below'];- }
- list(
$key, $curr) = each($tree);- }
- }
-
// Make sure the current page is in the trail (needed for the page title),- // but exclude tabs and the front page.
-
$last = count($trail) - 1;- if (
$trail[$last]['href'] != $item['href'] && !(bool)($item['type'] & MENU_IS_LOCAL_TASK) && !drupal_is_front_page()) {-
$trail[] = $item;- }
- }
- return
$trail;- }
/**- * Get the active trail for the current page - the path to root in the menu tree.
- */
function menu_get_active_trail() {- return
menu_set_active_trail();- }
/**- * Get the breadcrumb for the current page, as determined by the active trail.
- */
function menu_get_active_breadcrumb() {-
$breadcrumb = array();-
-
// No breadcrumb for the front page.-
if (drupal_is_front_page()) {- return
$breadcrumb;- }
-
$item = menu_get_item();- if (
$item && $item['access']) {-
$active_trail = menu_get_active_trail();- foreach (
$active_trail as $parent) {-
$breadcrumb[] = l($parent['title'], $parent['href'], $parent['localized_options']);- }
-
$end = end($active_trail);-
// Don't show a link to the current page in the breadcrumb trail.-
if ($item['href'] == $end['href'] || ($item['type'] == MENU_DEFAULT_LOCAL_TASK && $end['href'] != '<front>')) {-
array_pop($breadcrumb);- }
- }
- return
$breadcrumb;- }
/**- * Get the title of the current page, as determined by the active trail.
- */
function menu_get_active_title() {-
$active_trail = menu_get_active_trail();- foreach (
array_reverse($active_trail) as $item) {- if (!(bool)(
$item['type'] & MENU_IS_LOCAL_TASK)) {- return
$item['title'];- }
- }
- }
/**- * Get a menu link by its mlid, access checked and link translated for rendering.
- *
- * This function should never be called from within node_load() or any other
- * function used as a menu object load function since an infinite recursion may
- * occur.
- *
- * @param $mlid
- * The mlid of the menu item.
- * @return
- * A menu link, with $item['access'] filled and link translated for
- * rendering.
- */
function menu_link_load($mlid) {- if (
is_numeric($mlid) && $item = db_fetch_array(db_query("SELECT m.*, ml.* FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = %d", $mlid))) {-
_menu_link_translate($item);- return
$item;- }
- return
FALSE;- }
/**- * Clears the cached cached data for a single named menu.
- */
function menu_cache_clear($menu_name = 'navigation') {- static
$cache_cleared = array();- if (empty(
$cache_cleared[$menu_name])) {-
cache_clear_all('links:'. $menu_name .':', 'cache_menu', TRUE);-
$cache_cleared[$menu_name] = 1;- }
- elseif (
$cache_cleared[$menu_name] == 1) {-
register_shutdown_function('cache_clear_all', 'links:'. $menu_name .':', 'cache_menu', TRUE);-
$cache_cleared[$menu_name] = 2;- }
- }
/**- * Clears all cached menu data. This should be called any time broad changes
- * might have been made to the router items or menu links.
- */
function menu_cache_clear_all() {-
cache_clear_all('*', 'cache_menu', TRUE);- }
/**- * (Re)populate the database tables used by various menu functions.
- *
- * This function will clear and populate the {menu_router} table, add entries
- * to {menu_links} for new router items, then remove stale items from
- * {menu_links}. If called from update.php or install.php, it will also
- * schedule a call to itself on the first real page load from
- * menu_execute_active_handler(), because the maintenance page environment
- * is different and leaves stale data in the menu tables.
- */
function menu_rebuild() {-
variable_del('menu_rebuild_needed');-
menu_cache_clear_all();-
$menu = menu_router_build(TRUE);-
_menu_navigation_links_rebuild($menu);-
// Clear the page and block caches.-
_menu_clear_page_cache();- if (
defined('MAINTENANCE_MODE')) {-
variable_set('menu_rebuild_needed', TRUE);- }
- }
/**- * Collect, alter and store the menu definitions.
- */
function menu_router_build($reset = FALSE) {- static
$menu;- if (!isset(
$menu) || $reset) {- if (!
$reset && ($cache = cache_get('router:', 'cache_menu')) && isset($cache->data)) {-
$menu = $cache->data;- }
- else {
-
db_query('DELETE FROM {menu_router}');-
// We need to manually call each module so that we can know which module- // a given item came from.
-
$callbacks = array();- foreach (
module_implements('menu') as $module) {-
$router_items = call_user_func($module .'_menu');- if (isset(
$router_items) && is_array($router_items)) {- foreach (
array_keys($router_items) as $path) {-
$router_items[$path]['module'] = $module;- }
-
$callbacks = array_merge($callbacks, $router_items);- }
- }
-
// Alter the menu as defined in modules, keys are like user/%user.-
drupal_alter('menu', $callbacks);-
$menu = _menu_router_build($callbacks);-
cache_set('router:', $menu, 'cache_menu');- }
- }
- return
$menu;- }
/**- * Builds a link from a router item.
- */
function _menu_link_build($item) {- if (
$item['type'] == MENU_CALLBACK) {-
$item['hidden'] = -1;- }
- elseif (
$item['type'] == MENU_SUGGESTED_ITEM) {-
$item['hidden'] = 1;- }
-
// Note, we set this as 'system', so that we can be sure to distinguish all- // the menu links generated automatically from entries in {menu_router}.
-
$item['module'] = 'system';-
$item += array(-
'menu_name' => 'navigation',-
'link_title' => $item['title'],-
'link_path' => $item['path'],-
'hidden' => 0,-
'options' => empty($item['description']) ? array() : array('attributes' => array('title' => $item['description'])),- );
- return
$item;- }
/**- * Helper function to build menu links for the items in the menu router.
- */
function _menu_navigation_links_rebuild($menu) {-
// Add normal and suggested items as links.-
$menu_links = array();- foreach (
$menu as $path => $item) {- if (
$item['_visible']) {-
$item = _menu_link_build($item);-
$menu_links[$path] = $item;-
$sort[$path] = $item['_number_parts'];- }
- }
- if (
$menu_links) {-
// Make sure no child comes before its parent.-
array_multisort($sort, SORT_NUMERIC, $menu_links);- foreach (
$menu_links as $item) {-
$existing_item = db_fetch_array(db_query("SELECT mlid, menu_name, plid, customized, has_children, updated FROM {menu_links} WHERE link_path = '%s' AND module = '%s'", $item['link_path'], 'system'));- if (
$existing_item) {-
$item['mlid'] = $existing_item['mlid'];-
$item['menu_name'] = $existing_item['menu_name'];-
$item['plid'] = $existing_item['plid'];-
$item['has_children'] = $existing_item['has_children'];-
$item['updated'] = $existing_item['updated'];- }
- if (!
$existing_item || !$existing_item['customized']) {-
menu_link_save($item);- }
- }
- }
-
$placeholders = db_placeholders($menu, 'varchar');-
$paths = array_keys($menu);-
// Updated and customized items whose router paths are gone need new ones.-
$result = db_query("SELECT ml.link_path, ml.mlid, ml.router_path, ml.updated FROM {menu_links} ml WHERE ml.updated = 1 OR (router_path NOT IN ($placeholders) AND external = 0 AND customized = 1)", $paths);- while (
$item = db_fetch_array($result)) {-
$router_path = _menu_find_router_path($menu, $item['link_path']);- if (!empty(
$router_path) && ($router_path != $item['router_path'] || $item['updated'])) {-
// If the router path and the link path matches, it's surely a working- // item, so we clear the updated flag.
-
$updated = $item['updated'] && $router_path != $item['link_path'];-
db_query("UPDATE {menu_links} SET router_path = '%s', updated = %d WHERE mlid = %d", $router_path, $updated, $item['mlid']);- }
- }
-
// Find any item whose router path does not exist any more.-
$result = db_query("SELECT * FROM {menu_links} WHERE router_path NOT IN ($placeholders) AND external = 0 AND updated = 0 AND customized = 0 ORDER BY depth DESC", $paths);-
// Remove all such items. Starting from those with the greatest depth will- // minimize the amount of re-parenting done by menu_link_delete().
-
while ($item = db_fetch_array($result)) {-
_menu_delete_item($item, TRUE);- }
- }
/**- * Delete one or several menu links.
- *
- * @param $mlid
- * A valid menu link mlid or NULL. If NULL, $path is used.
- * @param $path
- * The path to the menu items to be deleted. $mlid must be NULL.
- */
function menu_link_delete($mlid, $path = NULL) {- if (isset(
$mlid)) {-
_menu_delete_item(db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $mlid)));- }
- else {
-
$result = db_query("SELECT * FROM {menu_links} WHERE link_path = '%s'", $path);- while (
$link = db_fetch_array($result)) {-
_menu_delete_item($link);- }
- }
- }
/**- * Helper function for menu_link_delete; deletes a single menu link.
- *
- * @param $item
- * Item to be deleted.
- * @param $force
- * Forces deletion. Internal use only, setting to TRUE is discouraged.
- */
function _menu_delete_item($item, $force = FALSE) {- if (
$item && ($item['module'] != 'system' || $item['updated'] || $force)) {-
// Children get re-attached to the item's parent.-
if ($item['has_children']) {-
$result = db_query("SELECT mlid FROM {menu_links} WHERE plid = %d", $item['mlid']);- while (
$m = db_fetch_array($result)) {-
$child = menu_link_load($m['mlid']);-
$child['plid'] = $item['plid'];-
menu_link_save($child);- }
- }
-
db_query('DELETE FROM {menu_links} WHERE mlid = %d', $item['mlid']);-
// Update the has_children status of the parent.-
_menu_update_parental_status($item);-
menu_cache_clear($item['menu_name']);-
_menu_clear_page_cache();- }
- }
/**- * Save a menu link.
- *
- * @param $item
- * An array representing a menu link item. The only mandatory keys are
- * link_path and link_title. Possible keys are:
- * - menu_name default is navigation
- * - weight default is 0
- * - expanded whether the item is expanded.
- * - options An array of options, @see l for more.
- * - mlid Set to an existing value, or 0 or NULL to insert a new link.
- * - plid The mlid of the parent.
- * - router_path The path of the relevant router item.
- */
function menu_link_save(&$item) {-
$menu = menu_router_build();-
drupal_alter('menu_link', $item, $menu);-
// This is the easiest way to handle the unique internal path '<front>',- // since a path marked as external does not need to match a router path.
-
$item['_external'] = menu_path_is_external($item['link_path']) || $item['link_path'] == '<front>';-
// Load defaults.-
$item += array(-
'menu_name' => 'navigation',-
'weight' => 0,-
'link_title' => '',-
'hidden' => 0,-
'has_children' => 0,-
'expanded' => 0,-
'options' => array(),-
'module' => 'menu',-
'customized' => 0,-
'updated' => 0,- );
-
$existing_item = FALSE;- if (isset(
$item['mlid'])) {-
$existing_item = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['mlid']));- }
- if (isset(
$item['plid'])) {-
$parent = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['plid']));- }
- else {
-
// Find the parent - it must be unique.-
$parent_path = $item['link_path'];-
$where = "WHERE link_path = '%s'";-
// Only links derived from router items should have module == 'system', and- // we want to find the parent even if it's in a different menu.
-
if ($item['module'] == 'system') {-
$where .= " AND module = '%s'";-
$arg2 = 'system';- }
- else {
-
// If not derived from a router item, we respect the specified menu name.-
$where .= " AND menu_name = '%s'";-
$arg2 = $item['menu_name'];- }
- do {
-
$parent = FALSE;-
$parent_path = substr($parent_path, 0, strrpos($parent_path, '/'));-
$result = db_query("SELECT COUNT(*) FROM {menu_links} ". $where, $parent_path, $arg2);-
// Only valid if we get a unique result.-
if (db_result($result) == 1) {-
$parent = db_fetch_array(db_query("SELECT * FROM {menu_links} ". $where, $parent_path, $arg2));- }
- } while (
$parent === FALSE && $parent_path);- }
- if (
$parent !== FALSE) {-
$item['menu_name'] = $parent['menu_name'];- }
-
$menu_name = $item['menu_name'];-
// Menu callbacks need to be in the links table for breadcrumbs, but can't- // be parents if they are generated directly from a router item.
-
if (empty($parent['mlid']) || $parent['hidden'] < 0) {-
$item['plid'] = 0;- }
- else {
-
$item['plid'] = $parent['mlid'];- }
- if (!
$existing_item) {-
db_query("INSERT INTO {menu_links} (- menu_name, plid, link_path,
- hidden, external, has_children,
- expanded, weight,
- module, link_title, options,
- customized, updated) VALUES (
- '%s', %d, '%s',
- %d, %d, %d,
- %d, %d,
- '%s', '%s', '%s', %d, %d)"
,-
$item['menu_name'], $item['plid'], $item['link_path'],-
$item['hidden'], $item['_external'], $item['has_children'],-
$item['expanded'], $item['weight'],-
$item['module'], $item['link_title'], serialize($item['options']),-
$item['customized'], $item['updated']);-
$item['mlid'] = db_last_insert_id('menu_links', 'mlid');- }
- if (!
$item['plid']) {-
$item['p1'] = $item['mlid'];- for (
$i = 2; $i <= MENU_MAX_DEPTH; $i++) {-
$item["p$i"] = 0;- }
-
$item['depth'] = 1;- }
- else {
-
// Cannot add beyond the maximum depth.-
if ($item['has_children'] && $existing_item) {-
$limit = MENU_MAX_DEPTH - menu_link_children_relative_depth($existing_item) - 1;- }
- else {
-
$limit = MENU_MAX_DEPTH - 1;- }
- if (
$parent['depth'] > $limit) {- return
FALSE;- }
-
$item['depth'] = $parent['depth'] + 1;-
_menu_link_parents_set($item, $parent);- }
-
// Need to check both plid and menu_name, since plid can be 0 in any menu.-
if ($existing_item && ($item['plid'] != $existing_item['plid'] || $menu_name != $existing_item['menu_name'])) {-
_menu_link_move_children($item, $existing_item);- }
-
// Find the callback. During the menu update we store empty paths to be- // fixed later, so we skip this.
-
if (!isset($_SESSION['system_update_6021']) && (empty($item['router_path']) || !$existing_item || ($existing_item['link_path'] != $item['link_path']))) {- if (
$item['_external']) {-
$item['router_path'] = '';- }
- else {
-
// Find the router path which will serve this path.-
$item['parts'] = explode('/', $item['link_path'], MENU_MAX_PARTS);-
$item['router_path'] = _menu_find_router_path($menu, $item['link_path']);- }
- }
-
db_query("UPDATE {menu_links} SET menu_name = '%s', plid = %d, link_path = '%s',- router_path = '%s', hidden = %d, external = %d, has_children = %d,
- expanded = %d, weight = %d, depth = %d,
- p1 = %d, p2 = %d, p3 = %d, p4 = %d, p5 = %d, p6 = %d, p7 = %d, p8 = %d, p9 = %d,
- module = '%s', link_title = '%s', options = '%s', customized = %d WHERE mlid = %d"
,-
$item['menu_name'], $item['plid'], $item['link_path'],-
$item['router_path'], $item['hidden'], $item['_external'], $item['has_children'],-
$item['expanded'], $item['weight'], $item['depth'],-
$item['p1'], $item['p2'], $item['p3'], $item['p4'], $item['p5'], $item['p6'], $item['p7'], $item['p8'], $item['p9'],-
$item['module'], $item['link_title'], serialize($item['options']), $item['customized'], $item['mlid']);-
// Check the has_children status of the parent.-
_menu_update_parental_status($item);-
menu_cache_clear($menu_name);- if (
$existing_item && $menu_name != $existing_item['menu_name']) {-
menu_cache_clear($existing_item['menu_name']);- }
-
_menu_clear_page_cache();- return
$item['mlid'];- }
/**- * Helper function to clear the page and block caches at most twice per page load.
- */
function _menu_clear_page_cache() {- static
$cache_cleared = 0;-
// Clear the page and block caches, but at most twice, including at- // the end of the page load when there are multple links saved or deleted.
-
if (empty($cache_cleared)) {-
cache_clear_all();-
// Keep track of which menus have expanded items.-
_menu_set_expanded_menus();-
$cache_cleared = 1;- }
- elseif (
$cache_cleared == 1) {-
register_shutdown_function('cache_clear_all');-
// Keep track of which menus have expanded items.-
register_shutdown_function('_menu_set_expanded_menus');-
$cache_cleared = 2;- }
- }
/**- * Helper function to update a list of menus with expanded items
- */
function _menu_set_expanded_menus() {-
$names = array();-
$result = db_query("SELECT menu_name FROM {menu_links} WHERE expanded != 0 GROUP BY menu_name");- while (
$n = db_fetch_array($result)) {-
$names[] = $n['menu_name'];- }
-
variable_set('menu_expanded', $names);- }
/**- * Find the router path which will serve this path.
- *
- * @param $menu
- * The full built menu.
- * @param $link_path
- * The path for we are looking up its router path.
- * @return
- * A path from $menu keys or empty if $link_path points to a nonexisting
- * place.
- */
function _menu_find_router_path($menu, $link_path) {-
$parts = explode('/', $link_path, MENU_MAX_PARTS);-
$router_path = $link_path;- if (!isset(
$menu[$router_path])) {- list(
$ancestors) = menu_get_ancestors($parts);-
$ancestors[] = '';- foreach (
$ancestors as $key => $router_path) {- if (isset(
$menu[$router_path])) {- break;
- }
- }
- }
- return
$router_path;- }
/**- * Insert, update or delete an uncustomized menu link related to a module.
- *
- * @param $module
- * The name of the module.
- * @param $op
- * Operation to perform: insert, update or delete.
- * @param $link_path
- * The path this link points to.
- * @param $link_title
- * Title of the link to insert or new title to update the link to.
- * Unused for delete.
- * @return
- * The insert op returns the mlid of the new item. Others op return NULL.
- */
function menu_link_maintain($module, $op, $link_path, $link_title) {- switch (
$op) {- case
'insert':-
$menu_link = array(-
'link_title' => $link_title,-
'link_path' => $link_path,-
'module' => $module,- );
- return
menu_link_save($menu_link);- break;
- case
'update':-
db_query("UPDATE {menu_links} SET link_title = '%s' WHERE link_path = '%s' AND customized = 0 AND module = '%s'", $link_title, $link_path, $module);-
menu_cache_clear();- break;
- case
'delete':-
menu_link_delete(NULL, $link_path);- break;
- }
- }
/**- * Find the depth of an item's children relative to its depth.
- *
- * For example, if the item has a depth of 2, and the maximum of any child in
- * the menu link tree is 5, the relative depth is 3.
- *
- * @param $item
- * An array representing a menu link item.
- * @return
- * The relative depth, or zero.
- *
- */
function menu_link_children_relative_depth($item) {-
$i = 1;-
$match = '';-
$args[] = $item['menu_name'];-
$p = 'p1';- while (
$i <= MENU_MAX_DEPTH && $item[$p]) {-
$match .= " AND $p = %d";-
$args[] = $item[$p];-
$p = 'p'. ++$i;- }
-
$max_depth = db_result(db_query_range("SELECT depth FROM {menu_links} WHERE menu_name = '%s'". $match ." ORDER BY depth DESC", $args, 0, 1));- return (
$max_depth > $item['depth']) ? $max_depth - $item['depth'] : 0;- }
/**- * Update the children of a menu link that's being moved.
- *
- * The menu name, parents (p1 - p6), and depth are updated for all children of
- * the link, and the has_children status of the previous parent is updated.
- */
function _menu_link_move_children($item, $existing_item) {-
$args[] = $item['menu_name'];-
$set[] = "menu_name = '%s'";-
$i = 1;- while (
$i <= $item['depth']) {-
$p = 'p'. $i++;-
$set[] = "$p = %d";-
$args[] = $item[$p];- }
-
$j = $existing_item['depth'] + 1;- while (
$i <= MENU_MAX_DEPTH && $j <= MENU_MAX_DEPTH) {-
$set[] = 'p'. $i++ .' = p'. $j++;- }
- while (
$i <= MENU_MAX_DEPTH) {-
$set[] = 'p'. $i++ .' = 0';- }
-
$shift = $item['depth'] - $existing_item['depth'];- if (
$shift < 0) {-
$args[] = -$shift;-
$set[] = 'depth = depth - %d';- }
- elseif (
$shift > 0) {-
// The order of $set must be reversed so the new values don't overwrite the- // old ones before they can be used because "Single-table UPDATE
- // assignments are generally evaluated from left to right"
- // see: http://dev.mysql.com/doc/refman/5.0/en/update.html
-
$set = array_reverse($set);-
$args = array_reverse($args);-
$args[] = $shift;-
$set[] = 'depth = depth + %d';- }
-
$where[] = "menu_name = '%s'";-
$args[] = $existing_item['menu_name'];-
$p = 'p1';- for (
$i = 1; $i <= MENU_MAX_DEPTH && $existing_item[$p]; $p = 'p'. ++$i) {-
$where[] = "$p = %d";-
$args[] = $existing_item[$p];- }
-
db_query("UPDATE {menu_links} SET ". implode(', ', $set) ." WHERE ". implode(' AND ', $where), $args);-
// Check the has_children status of the parent, while excluding this item.-
_menu_update_parental_status($existing_item, TRUE);- }
/**- * Check and update the has_children status for the parent of a link.
- */
function _menu_update_parental_status($item, $exclude = FALSE) {-
// If plid == 0, there is nothing to update.-
if ($item['plid']) {-
// We may want to exclude the passed link as a possible child.-
$where = $exclude ? " AND mlid != %d" : '';-
// Check if at least one visible child exists in the table.-
$parent_has_children = (bool)db_result(db_query_range("SELECT mlid FROM {menu_links} WHERE menu_name = '%s' AND plid = %d AND hidden = 0". $where, $item['menu_name'], $item['plid'], $item['mlid'], 0, 1));-
db_query("UPDATE {menu_links} SET has_children = %d WHERE mlid = %d", $parent_has_children, $item['plid']);- }
- }
/**- * Helper function that sets the p1..p9 values for a menu link being saved.
- */
function _menu_link_parents_set(&$item, $parent) {-
$i = 1;- while (
$i < $item['depth']) {-
$p = 'p'. $i++;-
$item[$p] = $parent[$p];- }
-
$p = 'p'. $i++;-
// The parent (p1 - p9) corresponding to the depth always equals the mlid.-
$item[$p] = $item['mlid'];- while (
$i <= MENU_MAX_DEPTH) {-
$p = 'p'. $i++;-
$item[$p] = 0;- }
- }
/**- * Helper function to build the router table based on the data from hook_menu.
- */
function _menu_router_build($callbacks) {-
// First pass: separate callbacks from paths, making paths ready for- // matching. Calculate fitness, and fill some default values.
-
$menu = array();- foreach (
$callbacks as $path => $item) {-
$load_functions = array();-
$to_arg_functions = array();-
$fit = 0;-
$move = FALSE;-
$parts = explode('/', $path, MENU_MAX_PARTS);-
$number_parts = count($parts);-
// We store the highest index of parts here to save some work in the fit- // calculation loop.
-
$slashes = $number_parts - 1;-
// Extract load and to_arg functions.-
foreach ($parts as $k => $part) {-
$match = FALSE;- if (
preg_match('/^%([a-z_]*)$/', $part, $matches)) {- if (empty(
$matches[1])) {-
$match = TRUE;-
$load_functions[$k] = NULL;- }
- else {
- if (
function_exists($matches[1] .'_to_arg')) {-
$to_arg_functions[$k] = $matches[1] .'_to_arg';-
$load_functions[$k] = NULL;-
$match = TRUE;- }
- if (
function_exists($matches[1] .'_load')) {-
$function = $matches[1] .'_load';-
// Create an array of arguments that will be passed to the _load- // function when this menu path is checked, if 'load arguments'
- // exists.
-
$load_functions[$k] = isset($item['load arguments']) ? array($function => $item['load arguments']) : $function;-
$match = TRUE;- }
- }
- }
- if (
$match) {-
$parts[$k] = '%';- }
- else {
-
$fit |= 1 << ($slashes - $k);- }
- }
- if (
$fit) {-
$move = TRUE;- }
- else {
-
// If there is no %, it fits maximally.-
$fit = (1 << $number_parts) - 1;- }
-
$masks[$fit] = 1;-
$item['load_functions'] = empty($load_functions) ? '' : serialize($load_functions);-
$item['to_arg_functions'] = empty($to_arg_functions) ? '' : serialize($to_arg_functions);-
$item += array(-
'title' => '',-
'weight' => 0,-
'type' => MENU_NORMAL_ITEM,-
'_number_parts' => $number_parts,-
'_parts' => $parts,-
'_fit' => $fit,- );
-
$item += array(-
'_visible' => (bool)($item['type'] & MENU_VISIBLE_IN_BREADCRUMB),-
'_tab' => (bool)($item['type'] & MENU_IS_LOCAL_TASK),- );
- if (
$move) {-
$new_path = implode('/', $item['_parts']);-
$menu[$new_path] = $item;-
$sort[$new_path] = $number_parts;- }
- else {
-
$menu[$path] = $item;-
$sort[$path] = $number_parts;- }
- }
-
array_multisort($sort, SORT_NUMERIC, $menu);-
// Apply inheritance rules.-
foreach ($menu as $path => $v) {-
$item = &$menu[$path];- if (!
$item['_tab']) {-
// Non-tab items.-
$item['tab_parent'] = '';-
$item['tab_root'] = $path;- }
- for (
$i = $item['_number_parts'] - 1; $i; $i--) {-
$parent_path = implode('/', array_slice($item['_parts'], 0, $i));- if (isset(
$menu[$parent_path])) {-
$parent = $menu[$parent_path];- if (!isset(
$item['tab_parent'])) {-
// Parent stores the parent of the path.-
$item['tab_parent'] = $parent_path;- }
- if (!isset(
$item['tab_root']) && !$parent['_tab']) {-
$item['tab_root'] = $parent_path;- }
-
// If an access callback is not found for a default local task we use- // the callback from the parent, since we expect them to be identical.
- // In all other cases, the access parameters must be specified.
-
if (($item['type'] == MENU_DEFAULT_LOCAL_TASK) && !isset($item['access callback']) && isset($parent['access callback'])) {-
$item['access callback'] = $parent['access callback'];- if (!isset(
$item['access arguments']) && isset($parent['access arguments'])) {-
$item['access arguments'] = $parent['access arguments'];- }
- }
-
// Same for page callbacks.-
if (!isset($item['page callback']) && isset($parent['page callback'])) {-
$item['page callback'] = $parent['page callback'];- if (!isset(
$item['page arguments']) && isset($parent['page arguments'])) {-
$item['page arguments'] = $parent['page arguments'];- }
- if (!isset(
$item['file']) && isset($parent['file'])) {-
$item['file'] = $parent['file'];- }
- if (!isset(
$item['file path']) && isset($parent['file path'])) {-
$item['file path'] = $parent['file path'];- }
- }
- }
- }
- if (!isset(
$item['access callback']) && isset($item['access arguments'])) {-
// Default callback.-
$item['access callback'] = 'user_access';- }
- if (!isset(
$item['access callback']) || empty($item['page callback'])) {-
$item['access callback'] = 0;- }
- if (
is_bool($item['access callback'])) {-
$item['access callback'] = intval($item['access callback']);- }
-
$item += array(-
'access arguments' => array(),-
'access callback' => '',-
'page arguments' => array(),-
'page callback' => '',-
'block callback' => '',-
'title arguments' => array(),-
'title callback' => 't',-
'description' => '',-
'position' => '',-
'tab_parent' => '',-
'tab_root' => $path,-
'path' => $path,-
'file' => '',-
'file path' => '',-
'include file' => '',- );
-
// Calculate out the file to be included for each callback, if any.-
if ($item['file']) {-
$file_path = $item['file path'] ? $item['file path'] : drupal_get_path('module', $item['module']);-
$item['include file'] = $file_path .'/'. $item['file'];- }
-
$title_arguments = $item['title arguments'] ? serialize($item['title arguments']) : '';-
db_query("INSERT INTO {menu_router}- (path, load_functions, to_arg_functions, access_callback,
- access_arguments, page_callback, page_arguments, fit,
- number_parts, tab_parent, tab_root,
- title, title_callback, title_arguments,
- type, block_callback, description, position, weight, file)
- VALUES ('%s', '%s', '%s', '%s',
- '%s', '%s', '%s', %d,
- %d, '%s', '%s',
- '%s', '%s', '%s',
- %d, '%s', '%s', '%s', %d, '%s')"
,-
$path, $item['load_functions'], $item['to_arg_functions'], $item['access callback'],-
serialize($item['access arguments']), $item['page callback'], serialize($item['page arguments']), $item['_fit'],-
$item['_number_parts'], $item['tab_parent'], $item['tab_root'],-
$item['title'], $item['title callback'], $title_arguments,-
$item['type'], $item['block callback'], $item['description'], $item['position'], $item['weight'], $item['include file']);- }
-
// Sort the masks so they are in order of descending fit, and store them.-
$masks = array_keys($masks);-
rsort($masks);-
variable_set('menu_masks', $masks);- return
$menu;- }
/**- * Returns TRUE if a path is external (e.g. http://example.com).
- */
function menu_path_is_external($path) {-
$colonpos = strpos($path, ':');- return
$colonpos !== FALSE && !preg_match('![/?#]!', substr($path, 0, $colonpos)) && filter_xss_bad_protocol($path, FALSE) == check_plain($path);- }
/**- * Checks whether the site is off-line for maintenance.
- *
- * This function will log the current user out and redirect to front page
- * if the current user has no 'administer site configuration' permission.
- *
- * @return
- * FALSE if the site is not off-line or its the login page or the user has
- * 'administer site configuration' permission.
- * TRUE for anonymous users not on the login page if the site is off-line.
- */
function _menu_site_is_offline() {-
// Check if site is set to off-line mode.-
if (variable_get('site_offline', 0)) {-
// Check if the user has administration privileges.-
if (user_access('administer site configuration')) {-
// Ensure that the off-line message is displayed only once [allowing for- // page redirects], and specifically suppress its display on the site
- // maintenance page.
-
if (drupal_get_normal_path($_GET['q']) != 'admin/settings/site-maintenance') {-
drupal_set_message(t('Operating in off-line mode.'), 'status', FALSE);- }
- }
- else {
-
// Anonymous users get a FALSE at the login prompt, TRUE otherwise.-
if (user_is_anonymous()) {- return
$_GET['q'] != 'user' && $_GET['q'] != 'user/login';- }
-
// Logged in users are unprivileged here, so they are logged out.-
require_once drupal_get_path('module', 'user') .'/user.pages.inc';-
user_logout();- }
- }
- return
FALSE;- }
/**- * Validates the path of a menu link being created or edited.
- *
- * @return
- * TRUE if it is a valid path AND the current user has access permission,
- * FALSE otherwise.
- */
function menu_valid_path($form_item) {- global
$menu_admin;-
$item = array();-
$path = $form_item['link_path'];-
// We indicate that a menu administrator is running the menu access check.-
$menu_admin = TRUE;- if (
$path == '<front>' || menu_path_is_external($path)) {-
$item = array('access' => TRUE);- }
- elseif (
preg_match('/\/\%/', $path)) {-
// Path is dynamic (ie 'user/%'), so check directly against menu_router table.-
if ($item = db_fetch_array(db_query("SELECT * FROM {menu_router} where path = '%s' ", $path))) {-
$item['link_path'] = $form_item['link_path'];-
$item['link_title'] = $form_item['link_title'];-
$item['external'] = FALSE;-
$item['options'] = '';-
_menu_link_translate($item);- }
- }
- else {
-
$item = menu_get_item($path);- }
-
$menu_admin = FALSE;- return
$item && $item['access'];- }
/**- * @} End of "defgroup menu".
- */
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