1352 lines
40 KiB
PHP
1352 lines
40 KiB
PHP
<?php
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// $Id$
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/**
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* @file
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* API for the Drupal menu system.
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*/
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/**
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* @defgroup menu Menu system
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* @{
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* Define the navigation menus, and route page requests to code based on URLs.
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*
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* The Drupal menu system drives both the navigation system from a user
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* perspective and the callback system that Drupal uses to respond to URLs
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* passed from the browser. For this reason, a good understanding of the
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* menu system is fundamental to the creation of complex modules.
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*
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* Drupal's menu system follows a simple hierarchy defined by paths.
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* Implementations of hook_menu() define menu items and assign them to
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* paths (which should be unique). The menu system aggregates these items
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* and determines the menu hierarchy from the paths. For example, if the
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* paths defined were a, a/b, e, a/b/c/d, f/g, and a/b/h, the menu system
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* would form the structure:
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* - a
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* - a/b
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* - a/b/c/d
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* - a/b/h
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* - e
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* - f/g
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* Note that the number of elements in the path does not necessarily
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* determine the depth of the menu item in the tree.
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*
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* When responding to a page request, the menu system looks to see if the
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* path requested by the browser is registered as a menu item with a
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* callback. If not, the system searches up the menu tree for the most
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* complete match with a callback it can find. If the path a/b/i is
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* requested in the tree above, the callback for a/b would be used.
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*
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* The found callback function is called with any arguments specified
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* in the "callback arguments" attribute of its menu item. The
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* attribute must be an array. After these arguments, any remaining
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* components of the path are appended as further arguments. In this
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* way, the callback for a/b above could respond to a request for
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* a/b/i differently than a request for a/b/j.
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*
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* For an illustration of this process, see page_example.module.
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*
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* Access to the callback functions is also protected by the menu system.
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* The "access" attribute of each menu item is checked as the search for a
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* callback proceeds. If this attribute is TRUE, then access is granted; if
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* FALSE, then access is denied. The first found "access" attribute
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* determines the accessibility of the target. Menu items may omit this
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* attribute to use the value provided by an ancestor item.
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*
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* In the default Drupal interface, you will notice many links rendered as
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* tabs. These are known in the menu system as "local tasks", and they are
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* rendered as tabs by default, though other presentations are possible.
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* Local tasks function just as other menu items in most respects. It is
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* convention that the names of these tasks should be short verbs if
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* possible. In addition, a "default" local task should be provided for
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* each set. When visiting a local task's parent menu item, the default
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* local task will be rendered as if it is selected; this provides for a
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* normal tab user experience. This default task is special in that it
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* links not to its provided path, but to its parent item's path instead.
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* The default task's path is only used to place it appropriately in the
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* menu hierarchy.
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*/
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/**
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* @name Menu flags
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* @{
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* Flags for use in the "type" attribute of menu items.
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*/
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define('MENU_IS_ROOT', 0x0001);
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define('MENU_VISIBLE_IN_TREE', 0x0002);
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define('MENU_VISIBLE_IN_BREADCRUMB', 0x0004);
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define('MENU_VISIBLE_IF_HAS_CHILDREN', 0x0008);
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define('MENU_MODIFIABLE_BY_ADMIN', 0x0010);
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define('MENU_MODIFIED_BY_ADMIN', 0x0020);
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define('MENU_CREATED_BY_ADMIN', 0x0040);
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define('MENU_IS_LOCAL_TASK', 0x0080);
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define('MENU_EXPANDED', 0x0100);
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define('MENU_LINKS_TO_PARENT', 0x0200);
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/**
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* @} End of "Menu flags".
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*/
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/**
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* @name Menu item types
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* @{
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* Menu item definitions provide one of these constants, which are shortcuts for
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* combinations of the above flags.
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*/
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/**
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* Normal menu items show up in the menu tree and can be moved/hidden by
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* the administrator. Use this for most menu items. It is the default value if
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* no menu item type is specified.
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*/
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define('MENU_NORMAL_ITEM', MENU_VISIBLE_IN_TREE | MENU_VISIBLE_IN_BREADCRUMB | MENU_MODIFIABLE_BY_ADMIN);
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/**
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* Item groupings are used for pages like "node/add" that simply list
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* subpages to visit. They are distinguished from other pages in that they will
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* disappear from the menu if no subpages exist.
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*/
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define('MENU_ITEM_GROUPING', MENU_VISIBLE_IF_HAS_CHILDREN | MENU_VISIBLE_IN_BREADCRUMB | MENU_MODIFIABLE_BY_ADMIN);
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/**
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* Callbacks simply register a path so that the correct function is fired
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* when the URL is accessed. They are not shown in the menu.
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*/
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define('MENU_CALLBACK', MENU_VISIBLE_IN_BREADCRUMB);
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/**
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* Dynamic menu items change frequently, and so should not be stored in the
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* database for administrative customization.
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*/
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define('MENU_DYNAMIC_ITEM', MENU_VISIBLE_IN_TREE | MENU_VISIBLE_IN_BREADCRUMB);
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/**
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* Modules may "suggest" menu items that the administrator may enable. They act
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* just as callbacks do until enabled, at which time they act like normal items.
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*/
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define('MENU_SUGGESTED_ITEM', MENU_MODIFIABLE_BY_ADMIN);
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/**
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* Local tasks are rendered as tabs by default. Use this for menu items that
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* describe actions to be performed on their parent item. An example is the path
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* "node/52/edit", which performs the "edit" task on "node/52".
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*/
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define('MENU_LOCAL_TASK', MENU_IS_LOCAL_TASK);
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/**
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* Every set of local tasks should provide one "default" task, that links to the
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* same path as its parent when clicked.
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*/
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define('MENU_DEFAULT_LOCAL_TASK', MENU_IS_LOCAL_TASK | MENU_LINKS_TO_PARENT);
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/**
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* Custom items are those defined by the administrator. Reserved for internal
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* use; do not return from hook_menu() implementations.
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*/
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define('MENU_CUSTOM_ITEM', MENU_VISIBLE_IN_TREE | MENU_VISIBLE_IN_BREADCRUMB | MENU_CREATED_BY_ADMIN | MENU_MODIFIABLE_BY_ADMIN);
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/**
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* Custom menus are those defined by the administrator. Reserved for internal
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* use; do not return from hook_menu() implementations.
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*/
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define('MENU_CUSTOM_MENU', MENU_IS_ROOT | MENU_VISIBLE_IN_TREE | MENU_CREATED_BY_ADMIN | MENU_MODIFIABLE_BY_ADMIN);
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/**
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* @} End of "Menu item types".
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*/
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/**
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* @name Menu status codes
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* @{
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* Status codes for menu callbacks.
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*/
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define('MENU_FOUND', 1);
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define('MENU_NOT_FOUND', 2);
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define('MENU_ACCESS_DENIED', 3);
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define('MENU_SITE_OFFLINE', 4);
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/**
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* @} End of "Menu status codes".
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*/
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/**
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* Return the menu data structure.
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*
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* The returned structure contains much information that is useful only
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* internally in the menu system. External modules are likely to need only
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* the ['visible'] element of the returned array. All menu items that are
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* accessible to the current user and not hidden will be present here, so
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* modules and themes can use this structure to build their own representations
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* of the menu.
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*
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* $menu['visible'] will contain an associative array, the keys of which
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* are menu IDs. The values of this array are themselves associative arrays,
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* with the following key-value pairs defined:
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* - 'title' - The displayed title of the menu or menu item. It will already
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* have been translated by the locale system.
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* - 'description' - The description (link title attribute) of the menu item.
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* It will already have been translated by the locale system.
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* - 'path' - The Drupal path to the menu item. A link to a particular item
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* can thus be constructed with
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* l($item['title'], $item['path'], array('title' => $item['description'])).
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* - 'children' - A linear list of the menu ID's of this item's children.
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*
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* Menu ID 0 is the "root" of the menu. The children of this item are the
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* menus themselves (they will have no associated path). Menu ID 1 will
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* always be one of these children; it is the default "Navigation" menu.
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*/
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function menu_get_menu() {
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global $_menu;
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global $user;
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global $locale;
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if (!isset($_menu['items'])) {
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// _menu_build() may indirectly call this function, so prevent infinite loops.
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$_menu['items'] = array();
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$cid = "menu:$user->uid:$locale";
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if ($cached = cache_get($cid)) {
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$_menu = unserialize($cached->data);
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}
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else {
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_menu_build();
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// Cache the menu structure for this user, to expire after one day.
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cache_set($cid, serialize($_menu), time() + (60 * 60 * 24));
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}
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// Make sure items that cannot be cached are added.
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_menu_append_contextual_items();
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// Reset the cached $menu in menu_get_item().
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menu_get_item(NULL, NULL, TRUE);
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}
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return $_menu;
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}
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/**
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* Return the local task tree.
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*
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* Unlike the rest of the menu structure, the local task tree cannot be cached
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* nor determined too early in the page request, because the user's current
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* location may be changed by a menu_set_location() call, and the tasks shown
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* (just as the breadcrumb trail) need to reflect the changed location.
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*/
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function menu_get_local_tasks() {
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global $_menu;
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// Don't cache the local task tree, as it varies by location and tasks are
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// allowed to be dynamically determined.
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if (!isset($_menu['local tasks'])) {
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// _menu_build_local_tasks() may indirectly call this function, so prevent
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// infinite loops.
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$_menu['local tasks'] = array();
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$pid = menu_get_active_nontask_item();
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if (!_menu_build_local_tasks($pid)) {
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// If the build returned FALSE, the tasks need not be displayed.
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$_menu['local tasks'][$pid]['children'] = array();
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}
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}
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return $_menu['local tasks'];
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}
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/**
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* Retrieves the menu item specified by $mid, or by $path if $mid is not given.
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*
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* @param $mid
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* The menu ID of the menu item to retrieve.
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* @param $path
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* The internal path of the menu item to retrieve. Defaults to NULL. Only
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* used if no item can be found matching $mid.
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* @param $reset
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* Optional flag that resets the static variable cache of the menu tree, if
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* set to TRUE. Default is FALSE.
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*
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* @return
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* The menu item found in the site menu, or an empty array if none could be
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* found.
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*/
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function menu_get_item($mid, $path = NULL, $reset = FALSE) {
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static $menu;
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if (!isset($menu) || $reset) {
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$menu = menu_get_menu();
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}
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if (isset($mid)) {
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return $menu['items'][$mid];
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}
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if (isset($path)) {
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return $menu['items'][$menu['path index'][$path]];
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}
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return array();
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}
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/**
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* Retrieves the menu ID and title of all root menus.
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*
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* @return
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* Array containing all menus (but not menu items), in the form mid => title.
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*/
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function menu_get_root_menus() {
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$menu = menu_get_menu();
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$root_menus = array();
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foreach ($menu['items'][0]['children'] as $mid) {
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$root_menus[$mid] = $menu['items'][$mid]['title'];
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}
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return $root_menus;
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}
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/**
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* Change the current menu location of the user.
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*
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* Frequently, modules may want to make a page or node act as if it were
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* in the menu tree somewhere, even though it was not registered in a
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* hook_menu() implementation. If the administrator has rearranged the menu,
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* the newly set location should respect this in the breadcrumb trail and
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* expanded/collapsed status of menu items in the tree. This function
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* allows this behavior.
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*
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* @param $location
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* An array specifying a complete or partial breadcrumb trail for the
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* new location, in the same format as the return value of hook_menu().
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* The last element of this array should be the new location itself.
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*
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* This function will set the new breadcrumb trail to the passed-in value,
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* but if any elements of this trail are visible in the site tree, the
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* trail will be "spliced in" to the existing site navigation at that point.
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*/
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function menu_set_location($location) {
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global $_menu;
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$temp_id = min(array_keys($_menu['items'])) - 1;
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$prev_id = 0;
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// Don't allow this function to change the actual current path, just the
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// position in the menu tree.
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$location[count($location) - 1]['path'] = $_GET['q'];
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foreach (array_reverse($location) as $item) {
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if (isset($_menu['path index'][$item['path']])) {
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$mid = $_menu['path index'][$item['path']];
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if (isset ($_menu['visible'][$mid])) {
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// Splice in the breadcrumb at this location.
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if ($prev_id) {
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$_menu['items'][$prev_id]['pid'] = $mid;
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}
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$prev_id = 0;
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break;
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}
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else {
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// A hidden item; show it, but only temporarily.
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$_menu['items'][$mid]['type'] |= MENU_VISIBLE_IN_BREADCRUMB;
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if ($prev_id) {
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$_menu['items'][$prev_id]['pid'] = $mid;
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}
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$prev_id = $mid;
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}
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}
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else {
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$item['type'] |= MENU_VISIBLE_IN_BREADCRUMB;
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if ($prev_id) {
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$_menu['items'][$prev_id]['pid'] = $temp_id;
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}
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$_menu['items'][$temp_id] = $item;
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$_menu['path index'][$item['path']] = $temp_id;
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$prev_id = $temp_id;
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$temp_id--;
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}
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}
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if ($prev_id) {
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// Didn't find a home, so attach this to the main navigation menu.
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$_menu['items'][$prev_id]['pid'] = 1;
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}
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$final_item = array_pop($location);
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menu_set_active_item($final_item['path']);
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}
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/**
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* Execute the handler associated with the active menu item.
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*
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* This is called early in the page request. The active menu item is at
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* this point determined exclusively by the URL. The handler that is called
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* here may, as a side effect, change the active menu item so that later
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* menu functions (that display the menus and breadcrumbs, for example)
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* act as if the user were in a different location on the site.
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*/
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function menu_execute_active_handler() {
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if (_menu_site_is_offline()) {
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return MENU_SITE_OFFLINE;
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}
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$menu = menu_get_menu();
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// Determine the menu item containing the callback.
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$path = $_GET['q'];
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while ($path && !isset($menu['callbacks'][$path])) {
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$path = substr($path, 0, strrpos($path, '/'));
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}
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if (!isset($menu['callbacks'][$path])) {
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return MENU_NOT_FOUND;
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}
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if (!function_exists($menu['callbacks'][$path]['callback'])) {
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return MENU_NOT_FOUND;
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}
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if (!_menu_item_is_accessible(menu_get_active_item())) {
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return MENU_ACCESS_DENIED;
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}
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// We found one, and are allowed to execute it.
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$arguments = isset($menu['callbacks'][$path]['callback arguments']) ? $menu['callbacks'][$path]['callback arguments'] : array();
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$arg = substr($_GET['q'], strlen($path) + 1);
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if (strlen($arg)) {
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$arguments = array_merge($arguments, explode('/', $arg));
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}
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return call_user_func_array($menu['callbacks'][$path]['callback'], $arguments);
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}
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/**
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* Returns the ID of the active menu item.
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*/
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function menu_get_active_item() {
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return menu_set_active_item();
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}
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/**
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* Sets the path of the active menu item.
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*/
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function menu_set_active_item($path = NULL) {
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static $stored_mid;
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$menu = menu_get_menu();
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if (!isset($stored_mid) || isset($path)) {
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if (!isset($path)) {
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$path = $_GET['q'];
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}
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else {
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$_GET['q'] = $path;
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}
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while ($path && !isset($menu['path index'][$path])) {
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$path = substr($path, 0, strrpos($path, '/'));
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}
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$stored_mid = isset($menu['path index'][$path]) ? $menu['path index'][$path] : 0;
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// Search for default local tasks to activate instead of this item.
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$continue = TRUE;
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while ($continue) {
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$continue = FALSE;
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if (isset($menu['items'][$stored_mid]['children'])) {
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foreach ($menu['items'][$stored_mid]['children'] as $cid) {
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if ($menu['items'][$cid]['type'] & MENU_LINKS_TO_PARENT) {
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$stored_mid = $cid;
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$continue = TRUE;
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}
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}
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}
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}
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// Reset the cached $menu in menu_get_item().
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menu_get_item(NULL, NULL, TRUE);
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}
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return $stored_mid;
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}
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/**
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* Returns the ID of the current menu item or, if the current item is a
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* local task, the menu item to which this task is attached.
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*/
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function menu_get_active_nontask_item() {
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$mid = menu_get_active_item();
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// Find the first non-task item:
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while ($mid) {
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$item = menu_get_item($mid);
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if (!($item['type'] & MENU_IS_LOCAL_TASK)) {
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return $mid;
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}
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$mid = $item['pid'];
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}
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}
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/**
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* Returns the title of the active menu item.
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*/
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function menu_get_active_title() {
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if ($mid = menu_get_active_nontask_item()) {
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$item = menu_get_item($mid);
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return $item['title'];
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}
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}
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/**
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* Returns the help associated with the active menu item.
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*/
|
|
function menu_get_active_help() {
|
|
$path = $_GET['q'];
|
|
$output = '';
|
|
|
|
if (!_menu_item_is_accessible(menu_get_active_item())) {
|
|
// Don't return help text for areas the user cannot access.
|
|
return;
|
|
}
|
|
|
|
foreach (module_list() as $name) {
|
|
if (module_hook($name, 'help')) {
|
|
if ($temp = module_invoke($name, 'help', $path)) {
|
|
$output .= $temp . "\n";
|
|
}
|
|
if (module_hook('help', 'page')) {
|
|
if (substr($path, 0, 6) == "admin/") {
|
|
if (module_invoke($name, 'help', 'admin/help#' . substr($path, 6))) {
|
|
$output .= theme("more_help_link", url('admin/help/' . substr($path, 6)));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of rendered menu items in the active breadcrumb trail.
|
|
*/
|
|
function menu_get_active_breadcrumb() {
|
|
$links[] = l(t('Home'), '<front>');
|
|
|
|
$trail = _menu_get_active_trail();
|
|
foreach ($trail as $mid) {
|
|
$item = menu_get_item($mid);
|
|
if ($item['type'] & MENU_VISIBLE_IN_BREADCRUMB) {
|
|
$links[] = menu_item_link($mid);
|
|
}
|
|
}
|
|
|
|
// The last item in the trail is the page title; don't display it here.
|
|
array_pop($links);
|
|
|
|
return $links;
|
|
}
|
|
|
|
/**
|
|
* Returns true when the menu item is in the active trail.
|
|
*/
|
|
function menu_in_active_trail($mid) {
|
|
$trail = _menu_get_active_trail();
|
|
|
|
return in_array($mid, $trail);
|
|
}
|
|
|
|
/**
|
|
* Returns true when the menu item is in the active trail within a
|
|
* specific subsection of the menu tree.
|
|
*
|
|
* @param $mid
|
|
* The menu item being considered.
|
|
* @param $pid
|
|
* The root of the subsection of the menu tree in which to look.
|
|
*/
|
|
function menu_in_active_trail_in_submenu($mid, $pid) {
|
|
$trail = _menu_get_active_trail_in_submenu($pid);
|
|
|
|
if (!$trail) {
|
|
return FALSE;
|
|
}
|
|
|
|
return in_array($mid, $trail);
|
|
}
|
|
|
|
/**
|
|
* Populate the database representation of the menu.
|
|
*
|
|
* This need only be called at the start of pages that modify the menu.
|
|
*/
|
|
function menu_rebuild() {
|
|
// Clear the page cache, so that changed menus are reflected for anonymous users.
|
|
cache_clear_all();
|
|
// Also clear the menu cache.
|
|
cache_clear_all('menu:', TRUE);
|
|
|
|
_menu_build();
|
|
|
|
if (module_exist('menu')) {
|
|
$menu = menu_get_menu();
|
|
|
|
// Fill a queue of new menu items which are modifiable.
|
|
$new_items = array();
|
|
foreach ($menu['items'] as $mid => $item) {
|
|
if ($mid < 0 && ($item['type'] & MENU_MODIFIABLE_BY_ADMIN)) {
|
|
$new_items[$mid] = $item;
|
|
}
|
|
}
|
|
|
|
// Save the new items updating the pids in each iteration
|
|
while (count($new_items)) {
|
|
foreach($new_items as $mid => $item) {
|
|
// If the item has a valid parent, save it
|
|
if ($item['pid'] >= 0) {
|
|
// The new menu ID gets passed back by reference as $item['mid']
|
|
menu_save_item($item);
|
|
// Fix parent IDs for the children of the menu item just saved
|
|
if ($item['children']) {
|
|
foreach ($item['children'] as $child) {
|
|
if (isset($new_items[$child])) {
|
|
$new_items[$child]['pid'] = $item['mid'];
|
|
}
|
|
}
|
|
}
|
|
// remove the item
|
|
unset($new_items[$mid]);
|
|
}
|
|
}
|
|
}
|
|
// Rebuild the menu to account for the changes.
|
|
_menu_build();
|
|
}
|
|
|
|
// Reset the cached $menu in menu_get_item().
|
|
menu_get_item(NULL, NULL, TRUE);
|
|
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML for a menu tree.
|
|
*
|
|
* @param $pid
|
|
* The parent id of the menu.
|
|
*
|
|
* @ingroup themeable
|
|
*/
|
|
function theme_menu_tree($pid = 1) {
|
|
if ($tree = menu_tree($pid)) {
|
|
return "\n<ul class=\"menu\">\n". $tree ."\n</ul>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns a rendered menu tree.
|
|
*
|
|
* @param $pid
|
|
* The parent id of the menu.
|
|
*/
|
|
function menu_tree($pid = 1) {
|
|
$menu = menu_get_menu();
|
|
$output = '';
|
|
|
|
if (isset($menu['visible'][$pid]) && $menu['visible'][$pid]['children']) {
|
|
foreach ($menu['visible'][$pid]['children'] as $mid) {
|
|
$type = isset($menu['visible'][$mid]['type']) ? $menu['visible'][$mid]['type'] : NULL;
|
|
$children = isset($menu['visible'][$mid]['children']) ? $menu['visible'][$mid]['children'] : NULL;
|
|
$output .= theme('menu_item', $mid, menu_in_active_trail($mid) || ($type & MENU_EXPANDED) ? theme('menu_tree', $mid) : '', count($children) == 0);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML output for a single menu item.
|
|
*
|
|
* @param $mid
|
|
* The menu id of the item.
|
|
* @param $children
|
|
* A string containing any rendered child items of this menu.
|
|
* @param $leaf
|
|
* A boolean indicating whether this menu item is a leaf.
|
|
*
|
|
* @ingroup themeable
|
|
*/
|
|
function theme_menu_item($mid, $children = '', $leaf = TRUE) {
|
|
return '<li class="'. ($leaf ? 'leaf' : ($children ? 'expanded' : 'collapsed')) .'">'. menu_item_link($mid) . $children ."</li>\n";
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML representing a given menu item ID.
|
|
*
|
|
* @param $item
|
|
* The menu item to render.
|
|
* @param $link_item
|
|
* The menu item which should be used to find the correct path.
|
|
*
|
|
* @ingroup themeable
|
|
*/
|
|
function theme_menu_item_link($item, $link_item) {
|
|
return l($item['title'], $link_item['path'], isset($item['description']) ? array('title' => $item['description']) : array());
|
|
}
|
|
|
|
/**
|
|
* Returns the rendered link to a menu item.
|
|
*
|
|
* @param $mid
|
|
* The menu item id to render.
|
|
*/
|
|
function menu_item_link($mid) {
|
|
$item = menu_get_item($mid);
|
|
$link_item = $item;
|
|
|
|
while ($link_item['type'] & MENU_LINKS_TO_PARENT) {
|
|
$link_item = menu_get_item($link_item['pid']);
|
|
}
|
|
|
|
return theme('menu_item_link', $item, $link_item);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* Returns the rendered HTML of the primary local tasks.
|
|
*/
|
|
function menu_primary_local_tasks() {
|
|
$local_tasks = menu_get_local_tasks();
|
|
$pid = menu_get_active_nontask_item();
|
|
$output = '';
|
|
|
|
if (count($local_tasks[$pid]['children'])) {
|
|
foreach ($local_tasks[$pid]['children'] as $mid) {
|
|
$output .= theme('menu_local_task', $mid, menu_in_active_trail($mid), TRUE);
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Returns the rendered HTML of the secondary local tasks.
|
|
*/
|
|
function menu_secondary_local_tasks() {
|
|
$local_tasks = menu_get_local_tasks();
|
|
$pid = menu_get_active_nontask_item();
|
|
$output = '';
|
|
|
|
if (count($local_tasks[$pid]['children'])) {
|
|
foreach ($local_tasks[$pid]['children'] as $mid) {
|
|
if (menu_in_active_trail($mid) && count($local_tasks[$mid]['children']) > 1) {
|
|
foreach ($local_tasks[$mid]['children'] as $cid) {
|
|
$output .= theme('menu_local_task', $cid, menu_in_active_trail($cid), FALSE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML representing a given menu item ID as a tab.
|
|
*
|
|
* @param $mid
|
|
* The menu ID to render.
|
|
* @param $active
|
|
* Whether this tab or a subtab is the active menu item.
|
|
* @param $primary
|
|
* Whether this tab is a primary tab or a subtab.
|
|
*
|
|
* @ingroup themeable
|
|
*/
|
|
function theme_menu_local_task($mid, $active, $primary) {
|
|
if ($active) {
|
|
return '<li class="active">'. menu_item_link($mid) ."</li>\n";
|
|
}
|
|
else {
|
|
return '<li>'. menu_item_link($mid) ."</li>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing the primary links.
|
|
* Can optionally descend from the root of the Primary links menu towards the
|
|
* current node for a specified number of levels and return that submenu.
|
|
* Used to generate a primary/secondary menu from different levels of one menu.
|
|
*
|
|
* @param $start_level
|
|
* This optional parameter can be used to retrieve a context-sensitive array
|
|
* of links at $start_level levels deep into the Primary links menu.
|
|
* The default is to return the top-level links.
|
|
* @param $pid
|
|
* The parent menu ID from which to search for children. Defaults to the
|
|
* menu_primary_menu setting.
|
|
* @return An array containing the themed links as the values. The keys of
|
|
* the array contain some extra encoded information about the results.
|
|
* The format of the key is {level}-{num}{-active}.
|
|
* level is the depth within the menu tree of this list.
|
|
* num is the number within this array, used only to make the key unique.
|
|
* -active is appended if this element is in the active trail.
|
|
*/
|
|
function menu_primary_links($start_level = 1, $pid = 0) {
|
|
if (!module_exist('menu')) {
|
|
return NULL;
|
|
}
|
|
if (!$pid) {
|
|
$pid = variable_get('menu_primary_menu', 0);
|
|
}
|
|
if (!$pid) {
|
|
return NULL;
|
|
}
|
|
|
|
if ($start_level < 1) {
|
|
$start_level = 1;
|
|
}
|
|
|
|
if ($start_level > 1) {
|
|
$trail = _menu_get_active_trail_in_submenu($pid);
|
|
if (!$trail) {
|
|
return NULL;
|
|
}
|
|
else {
|
|
$pid = $trail[$start_level - 1];
|
|
}
|
|
}
|
|
|
|
$menu = menu_get_menu();
|
|
if ($pid && is_array($menu['visible'][$pid]) && isset($menu['visible'][$pid]['children'])) {
|
|
$count = 1;
|
|
foreach ($menu['visible'][$pid]['children'] as $cid) {
|
|
$index = "$start_level-$count";
|
|
if (menu_in_active_trail_in_submenu($cid, $pid)) {
|
|
$index .= "-active";
|
|
}
|
|
$links[$index] = menu_item_link($cid);
|
|
$count++;
|
|
}
|
|
}
|
|
|
|
// Special case - provide link to admin/menu if primary links is empty.
|
|
if (empty($links) && $start_level == 1 && $pid == variable_get('menu_primary_menu', 0)) {
|
|
$links['1-1'] = l(t('edit primary links'),'admin/menu');
|
|
}
|
|
|
|
return $links;
|
|
}
|
|
|
|
/**
|
|
* Returns an array containing the secondary links.
|
|
* Secondary links can be either a second level of the Primary links
|
|
* menu or generated from their own menu.
|
|
*/
|
|
function menu_secondary_links() {
|
|
$msm = variable_get('menu_secondary_menu', 0);
|
|
if ($msm == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
if ($msm == variable_get('menu_primary_menu', 0)) {
|
|
return menu_primary_links(2, $msm);
|
|
}
|
|
|
|
return menu_primary_links(1, $msm);
|
|
}
|
|
|
|
/**
|
|
* Returns the themed HTML for primary and secondary links.
|
|
* Note that this function is overridden by most core themes because
|
|
* those themes display links in "link | link" format, not from a list.
|
|
* Also note that by default links rendered with this function are
|
|
* displayed with the same CSS as is used for the local tasks.
|
|
* If a theme wishes to render links from a ul it is expected that
|
|
* the theme will provide suitable CSS.
|
|
*
|
|
* @param $links
|
|
* An array containing links to render.
|
|
* @return
|
|
* A string containing the themed links.
|
|
*
|
|
* @ingroup themeable
|
|
*/
|
|
function theme_menu_links($links) {
|
|
if (!count($links)) {
|
|
return '';
|
|
}
|
|
$level_tmp = explode('-', key($links));
|
|
$level = $level_tmp[0];
|
|
$output = "<ul class=\"links-$level\">\n";
|
|
foreach ($links as $index => $link) {
|
|
$output .= '<li';
|
|
if (stristr($index, 'active')) {
|
|
$output .= ' class="active"';
|
|
}
|
|
$output .= ">$link</li>\n";
|
|
}
|
|
$output .= '</ul>';
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* @} End of "defgroup menu".
|
|
*/
|
|
|
|
/**
|
|
* Returns an array with the menu items that lead to the current menu item.
|
|
*/
|
|
function _menu_get_active_trail() {
|
|
static $trail;
|
|
|
|
if (!isset($trail)) {
|
|
$trail = array();
|
|
|
|
$mid = menu_get_active_item();
|
|
|
|
// Follow the parents up the chain to get the trail.
|
|
while ($mid && ($item = menu_get_item($mid))) {
|
|
array_unshift($trail, $mid);
|
|
$mid = $item['pid'];
|
|
}
|
|
}
|
|
return $trail;
|
|
}
|
|
|
|
/**
|
|
* Find the active trail through a specific subsection of the menu tree.
|
|
*
|
|
* @param $pid
|
|
* The root item from which the active trail must descend.
|
|
*/
|
|
function _menu_get_active_trail_in_submenu($pid) {
|
|
static $trails;
|
|
|
|
if (!isset($trails)) {
|
|
// Find all menu items which point to the current node and for each
|
|
// follow the parents up the chain to build an active trail.
|
|
$trails = array();
|
|
$menu = menu_get_menu();
|
|
$path = $_GET['q'];
|
|
$count = 0;
|
|
while ($path && !$count) {
|
|
foreach ($menu['items'] as $key => $item) {
|
|
if (isset($item['path']) && $item['path'] == $path) {
|
|
$trails[$count] = array();
|
|
$mid = $key;
|
|
while ($mid && $menu['items'][$mid]) {
|
|
array_unshift($trails[$count], $mid);
|
|
$mid = $menu['items'][$mid]['pid'];
|
|
}
|
|
$count ++;
|
|
}
|
|
}
|
|
$path = substr($path, 0, strrpos($path, '/'));
|
|
}
|
|
}
|
|
|
|
if ($trails) {
|
|
foreach ($trails as $trail) {
|
|
$count_trail = count($trail);
|
|
for ($i = 0; $i < $count_trail; $i++) {
|
|
if ($trail[$i] == $pid) {
|
|
// Return a trail from $pid down to the current page inclusive.
|
|
for ( ; $i < $count_trail; $i++) {
|
|
$subtrail[] = $trail[$i];
|
|
}
|
|
return $subtrail;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* Comparator routine for use in sorting menu items.
|
|
*/
|
|
function _menu_sort($a, $b) {
|
|
$menu = menu_get_menu();
|
|
|
|
$a = &$menu['items'][$a];
|
|
$b = &$menu['items'][$b];
|
|
|
|
if ($a['weight'] < $b['weight']) {
|
|
return -1;
|
|
}
|
|
elseif ($a['weight'] > $b['weight']) {
|
|
return 1;
|
|
}
|
|
elseif (isset($a['title']) && isset($b['title'])) {
|
|
return strnatcasecmp($a['title'], $b['title']);
|
|
}
|
|
else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Build the menu by querying both modules and the database.
|
|
*/
|
|
function _menu_build() {
|
|
global $_menu;
|
|
global $user;
|
|
|
|
// Start from a clean slate.
|
|
$_menu = array();
|
|
|
|
$_menu['path index'] = array();
|
|
// Set up items array, including default "Navigation" menu.
|
|
$_menu['items'] = array(
|
|
0 => array('path' => '', 'title' => '', 'type' => MENU_IS_ROOT),
|
|
1 => array('pid' => 0, 'path' => '', 'title' => t('Navigation'), 'weight' => -50, 'access' => TRUE, 'type' => MENU_IS_ROOT | MENU_VISIBLE_IN_TREE)
|
|
);
|
|
$_menu['callbacks'] = array();
|
|
|
|
// Build a sequential list of all menu items.
|
|
$menu_item_list = module_invoke_all('menu', TRUE);
|
|
|
|
// Menu items not in the DB get temporary negative IDs.
|
|
$temp_mid = -1;
|
|
|
|
foreach ($menu_item_list as $item) {
|
|
if (!isset($item['path'])) {
|
|
$item['path'] = '';
|
|
}
|
|
if (!isset($item['type'])) {
|
|
$item['type'] = MENU_NORMAL_ITEM;
|
|
}
|
|
if (!isset($item['weight'])) {
|
|
$item['weight'] = 0;
|
|
}
|
|
$mid = $temp_mid;
|
|
if (isset($_menu['path index'][$item['path']])) {
|
|
// Newer menu items overwrite older ones.
|
|
unset($_menu['items'][$_menu['path index'][$item['path']]]);
|
|
}
|
|
if (isset($item['callback'])) {
|
|
$_menu['callbacks'][$item['path']] = array('callback' => $item['callback']);
|
|
if (isset($item['callback arguments'])) {
|
|
$_menu['callbacks'][$item['path']]['callback arguments'] = $item['callback arguments'];
|
|
}
|
|
}
|
|
unset($item['callback']);
|
|
unset($item['callback arguments']);
|
|
$_menu['items'][$mid] = $item;
|
|
$_menu['path index'][$item['path']] = $mid;
|
|
|
|
$temp_mid--;
|
|
}
|
|
|
|
// Now fetch items from the DB, reassigning menu IDs as needed.
|
|
if (module_exist('menu')) {
|
|
$result = db_query(db_rewrite_sql('SELECT m.mid, m.* FROM {menu} m ORDER BY m.mid ASC', 'm', 'mid'));
|
|
while ($item = db_fetch_object($result)) {
|
|
// Handle URL aliases if entered in menu administration.
|
|
if (!isset($_menu['path index'][$item->path])) {
|
|
$item->path = drupal_get_normal_path($item->path);
|
|
}
|
|
if (isset($_menu['path index'][$item->path])) {
|
|
// The path is already declared.
|
|
$old_mid = $_menu['path index'][$item->path];
|
|
if ($old_mid < 0) {
|
|
// It had a temporary ID, so use a permanent one.
|
|
$_menu['items'][$item->mid] = $_menu['items'][$old_mid];
|
|
unset($_menu['items'][$old_mid]);
|
|
$_menu['path index'][$item->path] = $item->mid;
|
|
}
|
|
else {
|
|
// It has a permanent ID. Only replace with non-custom menu items.
|
|
if ($item->type & MENU_CREATED_BY_ADMIN) {
|
|
$_menu['items'][$item->mid] = array('path' => $item->path);
|
|
}
|
|
else {
|
|
// Leave the old item around as a shortcut to this one.
|
|
$_menu['items'][$item->mid] = $_menu['items'][$old_mid];
|
|
$_menu['path index'][$item->path] = $item->mid;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// The path was not declared, so this is a custom item or an orphaned one.
|
|
if ($item->type & MENU_CREATED_BY_ADMIN) {
|
|
$_menu['items'][$item->mid] = array('path' => $item->path);
|
|
if (!empty($item->path)) {
|
|
$_menu['path index'][$item->path] = $item->mid;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the administrator has changed the item, reflect the change.
|
|
if ($item->type & MENU_MODIFIED_BY_ADMIN) {
|
|
$_menu['items'][$item->mid]['title'] = $item->title;
|
|
$_menu['items'][$item->mid]['description'] = $item->description;
|
|
$_menu['items'][$item->mid]['pid'] = $item->pid;
|
|
$_menu['items'][$item->mid]['weight'] = $item->weight;
|
|
$_menu['items'][$item->mid]['type'] = $item->type;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Associate parent and child menu items.
|
|
_menu_find_parents($_menu['items']);
|
|
|
|
// Prepare to display trees to the user as required.
|
|
_menu_build_visible_tree();
|
|
}
|
|
|
|
/**
|
|
* Determine whether the given menu item is accessible to the current user.
|
|
*
|
|
* Use this instead of just checking the "access" property of a menu item
|
|
* to properly handle items with fall-through semantics.
|
|
*/
|
|
function _menu_item_is_accessible($mid) {
|
|
$menu = menu_get_menu();
|
|
|
|
// Follow the path up to find the first "access" attribute.
|
|
$path = isset($menu['items'][$mid]['path']) ? $menu['items'][$mid]['path'] : NULL;
|
|
while ($path && (!isset($menu['path index'][$path]) || !isset($menu['items'][$menu['path index'][$path]]['access']))) {
|
|
$path = substr($path, 0, strrpos($path, '/'));
|
|
}
|
|
if (empty($path)) {
|
|
// Items without any access attribute up the chain are denied, unless they
|
|
// were created by the admin. They most likely point to non-Drupal directories
|
|
// or to an external URL and should be allowed.
|
|
return $menu['items'][$mid]['type'] & MENU_CREATED_BY_ADMIN;
|
|
}
|
|
return $menu['items'][$menu['path index'][$path]]['access'];
|
|
}
|
|
|
|
/**
|
|
* Find all visible items in the menu tree, for ease in displaying to user.
|
|
*
|
|
* Since this is only for display, we only need title, path, and children
|
|
* for each item.
|
|
*/
|
|
function _menu_build_visible_tree($pid = 0) {
|
|
global $_menu;
|
|
|
|
if (isset($_menu['items'][$pid])) {
|
|
$parent = $_menu['items'][$pid];
|
|
|
|
$children = array();
|
|
if (isset($parent['children'])) {
|
|
usort($parent['children'], '_menu_sort');
|
|
foreach ($parent['children'] as $mid) {
|
|
$children = array_merge($children, _menu_build_visible_tree($mid));
|
|
}
|
|
}
|
|
$visible = ($parent['type'] & MENU_VISIBLE_IN_TREE) ||
|
|
($parent['type'] & MENU_VISIBLE_IF_HAS_CHILDREN && count($children) > 0);
|
|
$allowed = _menu_item_is_accessible($pid);
|
|
|
|
if (($parent['type'] & MENU_IS_ROOT) || ($visible && $allowed)) {
|
|
$_menu['visible'][$pid] = array('title' => $parent['title'], 'path' => $parent['path'], 'children' => $children, 'type' => $parent['type']);
|
|
foreach ($children as $mid) {
|
|
$_menu['visible'][$mid]['pid'] = $pid;
|
|
}
|
|
return array($pid);
|
|
}
|
|
else {
|
|
return $children;
|
|
}
|
|
}
|
|
|
|
return array();
|
|
}
|
|
|
|
/**
|
|
* Account for menu items that are only defined at certain paths, so will not
|
|
* be cached.
|
|
*
|
|
* We don't support the full range of menu item options for these menu items. We
|
|
* don't support MENU_VISIBLE_IF_HAS_CHILDREN, and we require parent items to be
|
|
* declared before their children.
|
|
*/
|
|
function _menu_append_contextual_items() {
|
|
global $_menu;
|
|
|
|
// Build a sequential list of all menu items.
|
|
$menu_item_list = module_invoke_all('menu', FALSE);
|
|
|
|
// Menu items not in the DB get temporary negative IDs.
|
|
$temp_mid = min(array_keys($_menu['items'])) - 1;
|
|
$new_items = array();
|
|
|
|
foreach ($menu_item_list as $item) {
|
|
if (isset($item['callback'])) {
|
|
$_menu['callbacks'][$item['path']] = array('callback' => $item['callback']);
|
|
if (isset($item['callback arguments'])) {
|
|
$_menu['callbacks'][$item['path']]['callback arguments'] = $item['callback arguments'];
|
|
}
|
|
}
|
|
unset($item['callback']);
|
|
unset($item['callback arguments']);
|
|
if (!isset($_menu['path index'][$item['path']])) {
|
|
if (!isset($item['path'])) {
|
|
$item['path'] = '';
|
|
}
|
|
if (!isset($item['type'])) {
|
|
$item['type'] = MENU_NORMAL_ITEM;
|
|
}
|
|
if (!isset($item['weight'])) {
|
|
$item['weight'] = 0;
|
|
}
|
|
$_menu['items'][$temp_mid] = $item;
|
|
$_menu['path index'][$item['path']] = $temp_mid;
|
|
$new_items[$temp_mid] = $item;
|
|
$temp_mid--;
|
|
}
|
|
else {
|
|
$mid = $_menu['path index'][$item['path']];
|
|
if ($_menu['items'][$mid]['type'] & MENU_CREATED_BY_ADMIN) {
|
|
$_menu['items'][$mid]['access'] = $item['access'];
|
|
$_menu['items'][$mid]['callback'] = $item['callback'];
|
|
if (isset($_menu['items'][$mid]['callback arguments'])) {
|
|
$_menu['items'][$mid]['callback arguments'] = $item['callback arguments'];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Establish parent-child relationships.
|
|
_menu_find_parents($new_items);
|
|
|
|
// Add new items to the visible tree if necessary.
|
|
foreach ($new_items as $mid => $item) {
|
|
$item = $_menu['items'][$mid];
|
|
if (($item['type'] & MENU_VISIBLE_IN_TREE) && _menu_item_is_accessible($mid)) {
|
|
$pid = $item['pid'];
|
|
while ($pid && !isset($_menu['visible'][$pid])) {
|
|
$pid = $_menu['items'][$pid]['pid'];
|
|
}
|
|
$_menu['visible'][$mid] = array('title' => $item['title'], 'path' => $item['path'], 'pid' => $pid);
|
|
$_menu['visible'][$pid]['children'][] = $mid;
|
|
usort($_menu['visible'][$pid]['children'], '_menu_sort');
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Establish parent-child relationships.
|
|
*/
|
|
function _menu_find_parents(&$items) {
|
|
global $_menu;
|
|
|
|
foreach ($items as $mid => $item) {
|
|
if (!isset($item['pid'])) {
|
|
// Parent's location has not been customized, so figure it out using the path.
|
|
$parent = $item['path'];
|
|
if ($parent) {
|
|
do {
|
|
$parent = substr($parent, 0, strrpos($parent, '/'));
|
|
}
|
|
while ($parent && !isset($_menu['path index'][$parent]));
|
|
}
|
|
|
|
$pid = $parent ? $_menu['path index'][$parent] : 1;
|
|
$_menu['items'][$mid]['pid'] = $pid;
|
|
}
|
|
else {
|
|
$pid = $item['pid'];
|
|
}
|
|
|
|
// Don't make root a child of itself.
|
|
if ($mid) {
|
|
if (isset ($_menu['items'][$pid])) {
|
|
$_menu['items'][$pid]['children'][] = $mid;
|
|
}
|
|
else {
|
|
// If parent is missing, it is a menu item that used to be defined
|
|
// but is no longer. Default to a root-level "Navigation" menu item.
|
|
$_menu['items'][1]['children'][] = $mid;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find all the items in the current local task tree.
|
|
*
|
|
* Since this is only for display, we only need title, path, and children
|
|
* for each item.
|
|
*
|
|
* At the close of this function, $_menu['local tasks'] is populated with the
|
|
* menu items in the local task tree.
|
|
*
|
|
* @return
|
|
* TRUE if the local task tree is forked. It does not need to be displayed
|
|
* otherwise.
|
|
*/
|
|
function _menu_build_local_tasks($pid) {
|
|
global $_menu;
|
|
|
|
$forked = FALSE;
|
|
|
|
if (isset($_menu['items'][$pid])) {
|
|
$parent = $_menu['items'][$pid];
|
|
|
|
$children = array();
|
|
if (isset($parent['children'])) {
|
|
foreach ($parent['children'] as $mid) {
|
|
if (($_menu['items'][$mid]['type'] & MENU_IS_LOCAL_TASK) && _menu_item_is_accessible($mid)) {
|
|
$children[] = $mid;
|
|
// Beware short-circuiting || operator!
|
|
$forked = _menu_build_local_tasks($mid) || $forked;
|
|
}
|
|
}
|
|
}
|
|
usort($children, '_menu_sort');
|
|
$forked = $forked || count($children) > 1;
|
|
|
|
$_menu['local tasks'][$pid] = array('title' => $parent['title'], 'path' => $parent['path'], 'children' => $children);
|
|
foreach ($children as $mid) {
|
|
$_menu['local tasks'][$mid]['pid'] = $pid;
|
|
}
|
|
}
|
|
|
|
return $forked;
|
|
}
|
|
|
|
/**
|
|
* Returns TRUE if the is off-line for maintenance.
|
|
*/
|
|
function _menu_site_is_offline() {
|
|
// Check if site is set to off-line mode
|
|
if (variable_get('site_offline', 0)) {
|
|
// Check if the user has administration privileges
|
|
if (!user_access('administer site configuration')) {
|
|
// Check if this is an attempt to login
|
|
if (drupal_get_normal_path($_GET['q']) != 'user') {
|
|
return TRUE;
|
|
}
|
|
}
|
|
else {
|
|
$offline_message = t('Operating in off-line mode.');
|
|
$messages = drupal_set_message();
|
|
// Ensure that the off-line message is displayed only once [allowing for page redirects].
|
|
if (!isset($messages) || !isset($messages['status']) || !in_array($offline_message, $messages['status'])) {
|
|
drupal_set_message($offline_message);
|
|
}
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|