defr/drupal/core: includes/menu.inc annotate

annotate includes/menu.inc @ 3:165d43f946a8 6.1

Drupal 6.1

author	Franck Deroche <webmaster@defr.org>
date	Tue, 23 Dec 2008 14:29:21 +0100
parents	c1f4ac30525a
children	2427550111ae

rev	line source
webmaster@1	1 <?php
webmaster@3	2 // $Id: menu.inc,v 1.255.2.9 2008/02/27 12:12:01 goba Exp $
webmaster@1	3
webmaster@1	4 /**
webmaster@1	5 * @file
webmaster@1	6 * API for the Drupal menu system.
webmaster@1	7 */
webmaster@1	8
webmaster@1	9 /**
webmaster@1	10 * @defgroup menu Menu system
webmaster@1	11 * @{
webmaster@1	12 * Define the navigation menus, and route page requests to code based on URLs.
webmaster@1	13 *
webmaster@1	14 * The Drupal menu system drives both the navigation system from a user
webmaster@1	15 * perspective and the callback system that Drupal uses to respond to URLs
webmaster@1	16 * passed from the browser. For this reason, a good understanding of the
webmaster@1	17 * menu system is fundamental to the creation of complex modules.
webmaster@1	18 *
webmaster@1	19 * Drupal's menu system follows a simple hierarchy defined by paths.
webmaster@1	20 * Implementations of hook_menu() define menu items and assign them to
webmaster@1	21 * paths (which should be unique). The menu system aggregates these items
webmaster@1	22 * and determines the menu hierarchy from the paths. For example, if the
webmaster@1	23 * paths defined were a, a/b, e, a/b/c/d, f/g, and a/b/h, the menu system
webmaster@1	24 * would form the structure:
webmaster@1	25 * - a
webmaster@1	26 * - a/b
webmaster@1	27 * - a/b/c/d
webmaster@1	28 * - a/b/h
webmaster@1	29 * - e
webmaster@1	30 * - f/g
webmaster@1	31 * Note that the number of elements in the path does not necessarily
webmaster@1	32 * determine the depth of the menu item in the tree.
webmaster@1	33 *
webmaster@1	34 * When responding to a page request, the menu system looks to see if the
webmaster@1	35 * path requested by the browser is registered as a menu item with a
webmaster@1	36 * callback. If not, the system searches up the menu tree for the most
webmaster@1	37 * complete match with a callback it can find. If the path a/b/i is
webmaster@1	38 * requested in the tree above, the callback for a/b would be used.
webmaster@1	39 *
webmaster@1	40 * The found callback function is called with any arguments specified
webmaster@1	41 * in the "page arguments" attribute of its menu item. The
webmaster@1	42 * attribute must be an array. After these arguments, any remaining
webmaster@1	43 * components of the path are appended as further arguments. In this
webmaster@1	44 * way, the callback for a/b above could respond to a request for
webmaster@1	45 * a/b/i differently than a request for a/b/j.
webmaster@1	46 *
webmaster@1	47 * For an illustration of this process, see page_example.module.
webmaster@1	48 *
webmaster@1	49 * Access to the callback functions is also protected by the menu system.
webmaster@1	50 * The "access callback" with an optional "access arguments" of each menu
webmaster@1	51 * item is called before the page callback proceeds. If this returns TRUE,
webmaster@1	52 * then access is granted; if FALSE, then access is denied. Menu items may
webmaster@1	53 * omit this attribute to use the value provided by an ancestor item.
webmaster@1	54 *
webmaster@1	55 * In the default Drupal interface, you will notice many links rendered as
webmaster@1	56 * tabs. These are known in the menu system as "local tasks", and they are
webmaster@1	57 * rendered as tabs by default, though other presentations are possible.
webmaster@1	58 * Local tasks function just as other menu items in most respects. It is
webmaster@1	59 * convention that the names of these tasks should be short verbs if
webmaster@1	60 * possible. In addition, a "default" local task should be provided for
webmaster@1	61 * each set. When visiting a local task's parent menu item, the default
webmaster@1	62 * local task will be rendered as if it is selected; this provides for a
webmaster@1	63 * normal tab user experience. This default task is special in that it
webmaster@1	64 * links not to its provided path, but to its parent item's path instead.
webmaster@1	65 * The default task's path is only used to place it appropriately in the
webmaster@1	66 * menu hierarchy.
webmaster@1	67 *
webmaster@1	68 * Everything described so far is stored in the menu_router table. The
webmaster@1	69 * menu_links table holds the visible menu links. By default these are
webmaster@1	70 * derived from the same hook_menu definitions, however you are free to
webmaster@1	71 * add more with menu_link_save().
webmaster@1	72 */
webmaster@1	73
webmaster@1	74 /**
webmaster@1	75 * @name Menu flags
webmaster@1	76 * @{
webmaster@1	77 * Flags for use in the "type" attribute of menu items.
webmaster@1	78 */
webmaster@1	79
webmaster@1	80 define('MENU_IS_ROOT', 0x0001);
webmaster@1	81 define('MENU_VISIBLE_IN_TREE', 0x0002);
webmaster@1	82 define('MENU_VISIBLE_IN_BREADCRUMB', 0x0004);
webmaster@1	83 define('MENU_LINKS_TO_PARENT', 0x0008);
webmaster@1	84 define('MENU_MODIFIED_BY_ADMIN', 0x0020);
webmaster@1	85 define('MENU_CREATED_BY_ADMIN', 0x0040);
webmaster@1	86 define('MENU_IS_LOCAL_TASK', 0x0080);
webmaster@1	87
webmaster@1	88 /**
webmaster@1	89 * @} End of "Menu flags".
webmaster@1	90 */
webmaster@1	91
webmaster@1	92 /**
webmaster@1	93 * @name Menu item types
webmaster@1	94 * @{
webmaster@1	95 * Menu item definitions provide one of these constants, which are shortcuts for
webmaster@1	96 * combinations of the above flags.
webmaster@1	97 */
webmaster@1	98
webmaster@1	99 /**
webmaster@1	100 * Normal menu items show up in the menu tree and can be moved/hidden by
webmaster@1	101 * the administrator. Use this for most menu items. It is the default value if
webmaster@1	102 * no menu item type is specified.
webmaster@1	103 */
webmaster@1	104 define('MENU_NORMAL_ITEM', MENU_VISIBLE_IN_TREE \| MENU_VISIBLE_IN_BREADCRUMB);
webmaster@1	105
webmaster@1	106 /**
webmaster@1	107 * Callbacks simply register a path so that the correct function is fired
webmaster@1	108 * when the URL is accessed. They are not shown in the menu.
webmaster@1	109 */
webmaster@1	110 define('MENU_CALLBACK', MENU_VISIBLE_IN_BREADCRUMB);
webmaster@1	111
webmaster@1	112 /**
webmaster@1	113 * Modules may "suggest" menu items that the administrator may enable. They act
webmaster@1	114 * just as callbacks do until enabled, at which time they act like normal items.
webmaster@1	115 * Note for the value: 0x0010 was a flag which is no longer used, but this way
webmaster@1	116 * the values of MENU_CALLBACK and MENU_SUGGESTED_ITEM are separate.
webmaster@1	117 */
webmaster@1	118 define('MENU_SUGGESTED_ITEM', MENU_VISIBLE_IN_BREADCRUMB \| 0x0010);
webmaster@1	119
webmaster@1	120 /**
webmaster@1	121 * Local tasks are rendered as tabs by default. Use this for menu items that
webmaster@1	122 * describe actions to be performed on their parent item. An example is the path
webmaster@1	123 * "node/52/edit", which performs the "edit" task on "node/52".
webmaster@1	124 */
webmaster@1	125 define('MENU_LOCAL_TASK', MENU_IS_LOCAL_TASK);
webmaster@1	126
webmaster@1	127 /**
webmaster@1	128 * Every set of local tasks should provide one "default" task, that links to the
webmaster@1	129 * same path as its parent when clicked.
webmaster@1	130 */
webmaster@1	131 define('MENU_DEFAULT_LOCAL_TASK', MENU_IS_LOCAL_TASK \| MENU_LINKS_TO_PARENT);
webmaster@1	132
webmaster@1	133 /**
webmaster@1	134 * @} End of "Menu item types".
webmaster@1	135 */
webmaster@1	136
webmaster@1	137 /**
webmaster@1	138 * @name Menu status codes
webmaster@1	139 * @{
webmaster@1	140 * Status codes for menu callbacks.
webmaster@1	141 */
webmaster@1	142
webmaster@1	143 define('MENU_FOUND', 1);
webmaster@1	144 define('MENU_NOT_FOUND', 2);
webmaster@1	145 define('MENU_ACCESS_DENIED', 3);
webmaster@1	146 define('MENU_SITE_OFFLINE', 4);
webmaster@1	147
webmaster@1	148 /**
webmaster@1	149 * @} End of "Menu status codes".
webmaster@1	150 */
webmaster@1	151
webmaster@1	152 /**
webmaster@1	153 * @Name Menu tree parameters
webmaster@1	154 * @{
webmaster@1	155 * Menu tree
webmaster@1	156 */
webmaster@1	157
webmaster@1	158 /**
webmaster@1	159 * The maximum number of path elements for a menu callback
webmaster@1	160 */
webmaster@1	161 define('MENU_MAX_PARTS', 7);
webmaster@1	162
webmaster@1	163
webmaster@1	164 /**
webmaster@1	165 * The maximum depth of a menu links tree - matches the number of p columns.
webmaster@1	166 */
webmaster@1	167 define('MENU_MAX_DEPTH', 9);
webmaster@1	168
webmaster@1	169
webmaster@1	170 /**
webmaster@1	171 * @} End of "Menu tree parameters".
webmaster@1	172 */
webmaster@1	173
webmaster@1	174 /**
webmaster@1	175 * Returns the ancestors (and relevant placeholders) for any given path.
webmaster@1	176 *
webmaster@1	177 * For example, the ancestors of node/12345/edit are:
webmaster@3	178 * - node/12345/edit
webmaster@3	179 * - node/12345/%
webmaster@3	180 * - node/%/edit
webmaster@3	181 * - node/%/%
webmaster@3	182 * - node/12345
webmaster@3	183 * - node/%
webmaster@3	184 * - node
webmaster@1	185 *
webmaster@1	186 * To generate these, we will use binary numbers. Each bit represents a
webmaster@1	187 * part of the path. If the bit is 1, then it represents the original
webmaster@1	188 * value while 0 means wildcard. If the path is node/12/edit/foo
webmaster@1	189 * then the 1011 bitstring represents node/%/edit/foo where % means that
webmaster@1	190 * any argument matches that part. We limit ourselves to using binary
webmaster@1	191 * numbers that correspond the patterns of wildcards of router items that
webmaster@1	192 * actually exists. This list of 'masks' is built in menu_rebuild().
webmaster@1	193 *
webmaster@1	194 * @param $parts
webmaster@1	195 * An array of path parts, for the above example
webmaster@1	196 * array('node', '12345', 'edit').
webmaster@1	197 * @return
webmaster@1	198 * An array which contains the ancestors and placeholders. Placeholders
webmaster@1	199 * simply contain as many '%s' as the ancestors.
webmaster@1	200 */
webmaster@1	201 function menu_get_ancestors($parts) {
webmaster@1	202 $number_parts = count($parts);
webmaster@1	203 $placeholders = array();
webmaster@1	204 $ancestors = array();
webmaster@1	205 $length = $number_parts - 1;
webmaster@1	206 $end = (1 << $number_parts) - 1;
webmaster@1	207 $masks = variable_get('menu_masks', array());
webmaster@1	208 // Only examine patterns that actually exist as router items (the masks).
webmaster@1	209 foreach ($masks as $i) {
webmaster@1	210 if ($i > $end) {
webmaster@1	211 // Only look at masks that are not longer than the path of interest.
webmaster@1	212 continue;
webmaster@1	213 }
webmaster@1	214 elseif ($i < (1 << $length)) {
webmaster@1	215 // We have exhausted the masks of a given length, so decrease the length.
webmaster@1	216 --$length;
webmaster@1	217 }
webmaster@1	218 $current = '';
webmaster@1	219 for ($j = $length; $j >= 0; $j--) {
webmaster@1	220 if ($i & (1 << $j)) {
webmaster@1	221 $current .= $parts[$length - $j];
webmaster@1	222 }
webmaster@1	223 else {
webmaster@1	224 $current .= '%';
webmaster@1	225 }
webmaster@1	226 if ($j) {
webmaster@1	227 $current .= '/';
webmaster@1	228 }
webmaster@1	229 }
webmaster@1	230 $placeholders[] = "'%s'";
webmaster@1	231 $ancestors[] = $current;
webmaster@1	232 }
webmaster@1	233 return array($ancestors, $placeholders);
webmaster@1	234 }
webmaster@1	235
webmaster@1	236 /**
webmaster@1	237 * The menu system uses serialized arrays stored in the database for
webmaster@1	238 * arguments. However, often these need to change according to the
webmaster@1	239 * current path. This function unserializes such an array and does the
webmaster@1	240 * necessary change.
webmaster@1	241 *
webmaster@1	242 * Integer values are mapped according to the $map parameter. For
webmaster@1	243 * example, if unserialize($data) is array('view', 1) and $map is
webmaster@1	244 * array('node', '12345') then 'view' will not be changed because
webmaster@1	245 * it is not an integer, but 1 will as it is an integer. As $map[1]
webmaster@1	246 * is '12345', 1 will be replaced with '12345'. So the result will
webmaster@1	247 * be array('node_load', '12345').
webmaster@1	248 *
webmaster@1	249 * @param @data
webmaster@1	250 * A serialized array.
webmaster@1	251 * @param @map
webmaster@1	252 * An array of potential replacements.
webmaster@1	253 * @return
webmaster@1	254 * The $data array unserialized and mapped.
webmaster@1	255 */
webmaster@1	256 function menu_unserialize($data, $map) {
webmaster@1	257 if ($data = unserialize($data)) {
webmaster@1	258 foreach ($data as $k => $v) {
webmaster@1	259 if (is_int($v)) {
webmaster@1	260 $data[$k] = isset($map[$v]) ? $map[$v] : '';
webmaster@1	261 }
webmaster@1	262 }
webmaster@1	263 return $data;
webmaster@1	264 }
webmaster@1	265 else {
webmaster@1	266 return array();
webmaster@1	267 }
webmaster@1	268 }
webmaster@1	269
webmaster@1	270
webmaster@1	271
webmaster@1	272 /**
webmaster@1	273 * Replaces the statically cached item for a given path.
webmaster@1	274 *
webmaster@1	275 * @param $path
webmaster@1	276 * The path.
webmaster@1	277 * @param $router_item
webmaster@1	278 * The router item. Usually you take a router entry from menu_get_item and
webmaster@1	279 * set it back either modified or to a different path. This lets you modify the
webmaster@1	280 * navigation block, the page title, the breadcrumb and the page help in one
webmaster@1	281 * call.
webmaster@1	282 */
webmaster@1	283 function menu_set_item($path, $router_item) {
webmaster@1	284 menu_get_item($path, $router_item);
webmaster@1	285 }
webmaster@1	286
webmaster@1	287 /**
webmaster@1	288 * Get a router item.
webmaster@1	289 *
webmaster@1	290 * @param $path
webmaster@1	291 * The path, for example node/5. The function will find the corresponding
webmaster@1	292 * node/% item and return that.
webmaster@1	293 * @param $router_item
webmaster@1	294 * Internal use only.
webmaster@1	295 * @return
webmaster@1	296 * The router item, an associate array corresponding to one row in the
webmaster@1	297 * menu_router table. The value of key map holds the loaded objects. The
webmaster@1	298 * value of key access is TRUE if the current user can access this page.
webmaster@1	299 * The values for key title, page_arguments, access_arguments will be
webmaster@1	300 * filled in based on the database values and the objects loaded.
webmaster@1	301 */
webmaster@1	302 function menu_get_item($path = NULL, $router_item = NULL) {
webmaster@1	303 static $router_items;
webmaster@1	304 if (!isset($path)) {
webmaster@1	305 $path = $_GET['q'];
webmaster@1	306 }
webmaster@1	307 if (isset($router_item)) {
webmaster@1	308 $router_items[$path] = $router_item;
webmaster@1	309 }
webmaster@1	310 if (!isset($router_items[$path])) {
webmaster@1	311 $original_map = arg(NULL, $path);
webmaster@1	312 $parts = array_slice($original_map, 0, MENU_MAX_PARTS);
webmaster@1	313 list($ancestors, $placeholders) = menu_get_ancestors($parts);
webmaster@1	314
webmaster@1	315 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))) {
webmaster@1	316 $map = _menu_translate($router_item, $original_map);
webmaster@1	317 if ($map === FALSE) {
webmaster@1	318 $router_items[$path] = FALSE;
webmaster@1	319 return FALSE;
webmaster@1	320 }
webmaster@1	321 if ($router_item['access']) {
webmaster@1	322 $router_item['map'] = $map;
webmaster@1	323 $router_item['page_arguments'] = array_merge(menu_unserialize($router_item['page_arguments'], $map), array_slice($map, $router_item['number_parts']));
webmaster@1	324 }
webmaster@1	325 }
webmaster@1	326 $router_items[$path] = $router_item;
webmaster@1	327 }
webmaster@1	328 return $router_items[$path];
webmaster@1	329 }
webmaster@1	330
webmaster@1	331 /**
webmaster@1	332 * Execute the page callback associated with the current path
webmaster@1	333 */
webmaster@1	334 function menu_execute_active_handler($path = NULL) {
webmaster@1	335 if (_menu_site_is_offline()) {
webmaster@1	336 return MENU_SITE_OFFLINE;
webmaster@1	337 }
webmaster@1	338 if (variable_get('menu_rebuild_needed', FALSE)) {
webmaster@1	339 menu_rebuild();
webmaster@1	340 }
webmaster@1	341 if ($router_item = menu_get_item($path)) {
webmaster@1	342 if ($router_item['access']) {
webmaster@1	343 if ($router_item['file']) {
webmaster@1	344 require_once($router_item['file']);
webmaster@1	345 }
webmaster@1	346 return call_user_func_array($router_item['page_callback'], $router_item['page_arguments']);
webmaster@1	347 }
webmaster@1	348 else {
webmaster@1	349 return MENU_ACCESS_DENIED;
webmaster@1	350 }
webmaster@1	351 }
webmaster@1	352 return MENU_NOT_FOUND;
webmaster@1	353 }
webmaster@1	354
webmaster@1	355 /**
webmaster@1	356 * Loads objects into the map as defined in the $item['load_functions'].
webmaster@1	357 *
webmaster@1	358 * @param $item
webmaster@1	359 * A menu router or menu link item
webmaster@1	360 * @param $map
webmaster@1	361 * An array of path arguments (ex: array('node', '5'))
webmaster@1	362 * @return
webmaster@1	363 * Returns TRUE for success, FALSE if an object cannot be loaded.
webmaster@1	364 * Names of object loading functions are placed in $item['load_functions'].
webmaster@1	365 * Loaded objects are placed in $map[]; keys are the same as keys in the
webmaster@1	366 * $item['load_functions'] array.
webmaster@1	367 * $item['access'] is set to FALSE if an object cannot be loaded.
webmaster@1	368 */
webmaster@1	369 function _menu_load_objects(&$item, &$map) {
webmaster@1	370 if ($load_functions = $item['load_functions']) {
webmaster@1	371 // If someone calls this function twice, then unserialize will fail.
webmaster@1	372 if ($load_functions_unserialized = unserialize($load_functions)) {
webmaster@1	373 $load_functions = $load_functions_unserialized;
webmaster@1	374 }
webmaster@1	375 $path_map = $map;
webmaster@1	376 foreach ($load_functions as $index => $function) {
webmaster@1	377 if ($function) {
webmaster@1	378 $value = isset($path_map[$index]) ? $path_map[$index] : '';
webmaster@1	379 if (is_array($function)) {
webmaster@1	380 // Set up arguments for the load function. These were pulled from
webmaster@1	381 // 'load arguments' in the hook_menu() entry, but they need
webmaster@1	382 // some processing. In this case the $function is the key to the
webmaster@1	383 // load_function array, and the value is the list of arguments.
webmaster@1	384 list($function, $args) = each($function);
webmaster@1	385 $load_functions[$index] = $function;
webmaster@1	386
webmaster@1	387 // Some arguments are placeholders for dynamic items to process.
webmaster@1	388 foreach ($args as $i => $arg) {
webmaster@1	389 if ($arg === '%index') {
webmaster@1	390 // Pass on argument index to the load function, so multiple
webmaster@1	391 // occurances of the same placeholder can be identified.
webmaster@1	392 $args[$i] = $index;
webmaster@1	393 }
webmaster@1	394 if ($arg === '%map') {
webmaster@1	395 // Pass on menu map by reference. The accepting function must
webmaster@1	396 // also declare this as a reference if it wants to modify
webmaster@1	397 // the map.
webmaster@1	398 $args[$i] = &$map;
webmaster@1	399 }
webmaster@1	400 if (is_int($arg)) {
webmaster@1	401 $args[$i] = isset($path_map[$arg]) ? $path_map[$arg] : '';
webmaster@1	402 }
webmaster@1	403 }
webmaster@1	404 array_unshift($args, $value);
webmaster@1	405 $return = call_user_func_array($function, $args);
webmaster@1	406 }
webmaster@1	407 else {
webmaster@1	408 $return = $function($value);
webmaster@1	409 }
webmaster@1	410 // If callback returned an error or there is no callback, trigger 404.
webmaster@1	411 if ($return === FALSE) {
webmaster@1	412 $item['access'] = FALSE;
webmaster@1	413 $map = FALSE;
webmaster@1	414 return FALSE;
webmaster@1	415 }
webmaster@1	416 $map[$index] = $return;
webmaster@1	417 }
webmaster@1	418 }
webmaster@1	419 $item['load_functions'] = $load_functions;
webmaster@1	420 }
webmaster@1	421 return TRUE;
webmaster@1	422 }
webmaster@1	423
webmaster@1	424 /**
webmaster@1	425 * Check access to a menu item using the access callback
webmaster@1	426 *
webmaster@1	427 * @param $item
webmaster@1	428 * A menu router or menu link item
webmaster@1	429 * @param $map
webmaster@1	430 * An array of path arguments (ex: array('node', '5'))
webmaster@1	431 * @return
webmaster@1	432 * $item['access'] becomes TRUE if the item is accessible, FALSE otherwise.
webmaster@1	433 */
webmaster@1	434 function _menu_check_access(&$item, $map) {
webmaster@1	435 // Determine access callback, which will decide whether or not the current
webmaster@1	436 // user has access to this path.
webmaster@1	437 $callback = empty($item['access_callback']) ? 0 : trim($item['access_callback']);
webmaster@1	438 // Check for a TRUE or FALSE value.
webmaster@1	439 if (is_numeric($callback)) {
webmaster@1	440 $item['access'] = (bool)$callback;
webmaster@1	441 }
webmaster@1	442 else {
webmaster@1	443 $arguments = menu_unserialize($item['access_arguments'], $map);
webmaster@1	444 // As call_user_func_array is quite slow and user_access is a very common
webmaster@1	445 // callback, it is worth making a special case for it.
webmaster@1	446 if ($callback == 'user_access') {
webmaster@1	447 $item['access'] = (count($arguments) == 1) ? user_access($arguments[0]) : user_access($arguments[0], $arguments[1]);
webmaster@1	448 }
webmaster@1	449 else {
webmaster@1	450 $item['access'] = call_user_func_array($callback, $arguments);
webmaster@1	451 }
webmaster@1	452 }
webmaster@1	453 }
webmaster@1	454
webmaster@1	455 /**
webmaster@1	456 * Localize the router item title using t() or another callback.
webmaster@1	457 *
webmaster@1	458 * Translate the title and description to allow storage of English title
webmaster@1	459 * strings in the database, yet display of them in the language required
webmaster@1	460 * by the current user.
webmaster@1	461 *
webmaster@1	462 * @param $item
webmaster@1	463 * A menu router item or a menu link item.
webmaster@1	464 * @param $map
webmaster@1	465 * The path as an array with objects already replaced. E.g., for path
webmaster@1	466 * node/123 $map would be array('node', $node) where $node is the node
webmaster@1	467 * object for node 123.
webmaster@1	468 * @param $link_translate
webmaster@1	469 * TRUE if we are translating a menu link item; FALSE if we are
webmaster@1	470 * translating a menu router item.
webmaster@1	471 * @return
webmaster@1	472 * No return value.
webmaster@1	473 * $item['title'] is localized according to $item['title_callback'].
webmaster@1	474 * If an item's callback is check_plain(), $item['options']['html'] becomes
webmaster@1	475 * TRUE.
webmaster@1	476 * $item['description'] is translated using t().
webmaster@1	477 * When doing link translation and the $item['options']['attributes']['title']
webmaster@1	478 * (link title attribute) matches the description, it is translated as well.
webmaster@1	479 */
webmaster@1	480 function _menu_item_localize(&$item, $map, $link_translate = FALSE) {
webmaster@1	481 $callback = $item['title_callback'];
webmaster@1	482 $item['localized_options'] = $item['options'];
webmaster@1	483 // If we are not doing link translation or if the title matches the
webmaster@1	484 // link title of its router item, localize it.
webmaster@1	485 if (!$link_translate \|\| (!empty($item['title']) && ($item['title'] == $item['link_title']))) {
webmaster@1	486 // t() is a special case. Since it is used very close to all the time,
webmaster@1	487 // we handle it directly instead of using indirect, slower methods.
webmaster@1	488 if ($callback == 't') {
webmaster@1	489 if (empty($item['title_arguments'])) {
webmaster@1	490 $item['title'] = t($item['title']);
webmaster@1	491 }
webmaster@1	492 else {
webmaster@1	493 $item['title'] = t($item['title'], menu_unserialize($item['title_arguments'], $map));
webmaster@1	494 }
webmaster@1	495 }
webmaster@1	496 elseif ($callback) {
webmaster@1	497 if (empty($item['title_arguments'])) {
webmaster@1	498 $item['title'] = $callback($item['title']);
webmaster@1	499 }
webmaster@1	500 else {
webmaster@1	501 $item['title'] = call_user_func_array($callback, menu_unserialize($item['title_arguments'], $map));
webmaster@1	502 }
webmaster@1	503 // Avoid calling check_plain again on l() function.
webmaster@1	504 if ($callback == 'check_plain') {
webmaster@1	505 $item['localized_options']['html'] = TRUE;
webmaster@1	506 }
webmaster@1	507 }
webmaster@1	508 }
webmaster@1	509 elseif ($link_translate) {
webmaster@1	510 $item['title'] = $item['link_title'];
webmaster@1	511 }
webmaster@1	512
webmaster@1	513 // Translate description, see the motivation above.
webmaster@1	514 if (!empty($item['description'])) {
webmaster@1	515 $original_description = $item['description'];
webmaster@1	516 $item['description'] = t($item['description']);
webmaster@1	517 if ($link_translate && $item['options']['attributes']['title'] == $original_description) {
webmaster@1	518 $item['localized_options']['attributes']['title'] = $item['description'];
webmaster@1	519 }
webmaster@1	520 }
webmaster@1	521 }
webmaster@1	522
webmaster@1	523 /**
webmaster@1	524 * Handles dynamic path translation and menu access control.
webmaster@1	525 *
webmaster@1	526 * When a user arrives on a page such as node/5, this function determines
webmaster@1	527 * what "5" corresponds to, by inspecting the page's menu path definition,
webmaster@1	528 * node/%node. This will call node_load(5) to load the corresponding node
webmaster@1	529 * object.
webmaster@1	530 *
webmaster@1	531 * It also works in reverse, to allow the display of tabs and menu items which
webmaster@1	532 * contain these dynamic arguments, translating node/%node to node/5.
webmaster@1	533 *
webmaster@1	534 * Translation of menu item titles and descriptions are done here to
webmaster@1	535 * allow for storage of English strings in the database, and translation
webmaster@1	536 * to the language required to generate the current page
webmaster@1	537 *
webmaster@1	538 * @param $router_item
webmaster@1	539 * A menu router item
webmaster@1	540 * @param $map
webmaster@1	541 * An array of path arguments (ex: array('node', '5'))
webmaster@1	542 * @param $to_arg
webmaster@1	543 * Execute $item['to_arg_functions'] or not. Use only if you want to render a
webmaster@1	544 * path from the menu table, for example tabs.
webmaster@1	545 * @return
webmaster@1	546 * Returns the map with objects loaded as defined in the
webmaster@1	547 * $item['load_functions. $item['access'] becomes TRUE if the item is
webmaster@1	548 * accessible, FALSE otherwise. $item['href'] is set according to the map.
webmaster@1	549 * If an error occurs during calling the load_functions (like trying to load
webmaster@1	550 * a non existing node) then this function return FALSE.
webmaster@1	551 */
webmaster@1	552 function _menu_translate(&$router_item, $map, $to_arg = FALSE) {
webmaster@1	553 $path_map = $map;
webmaster@1	554 if (!_menu_load_objects($router_item, $map)) {
webmaster@1	555 // An error occurred loading an object.
webmaster@1	556 $router_item['access'] = FALSE;
webmaster@1	557 return FALSE;
webmaster@1	558 }
webmaster@1	559 if ($to_arg) {
webmaster@1	560 _menu_link_map_translate($path_map, $router_item['to_arg_functions']);
webmaster@1	561 }
webmaster@1	562
webmaster@1	563 // Generate the link path for the page request or local tasks.
webmaster@1	564 $link_map = explode('/', $router_item['path']);
webmaster@1	565 for ($i = 0; $i < $router_item['number_parts']; $i++) {
webmaster@1	566 if ($link_map[$i] == '%') {
webmaster@1	567 $link_map[$i] = $path_map[$i];
webmaster@1	568 }
webmaster@1	569 }
webmaster@1	570 $router_item['href'] = implode('/', $link_map);
webmaster@1	571 $router_item['options'] = array();
webmaster@1	572 _menu_check_access($router_item, $map);
webmaster@1	573
webmaster@1	574 _menu_item_localize($router_item, $map);
webmaster@1	575
webmaster@1	576 return $map;
webmaster@1	577 }
webmaster@1	578
webmaster@1	579 /**
webmaster@1	580 * This function translates the path elements in the map using any to_arg
webmaster@1	581 * helper function. These functions take an argument and return an object.
webmaster@1	582 * See http://drupal.org/node/109153 for more information.
webmaster@1	583 *
webmaster@1	584 * @param map
webmaster@1	585 * An array of path arguments (ex: array('node', '5'))
webmaster@1	586 * @param $to_arg_functions
webmaster@1	587 * An array of helper function (ex: array(2 => 'menu_tail_to_arg'))
webmaster@1	588 */
webmaster@1	589 function _menu_link_map_translate(&$map, $to_arg_functions) {
webmaster@1	590 if ($to_arg_functions) {
webmaster@1	591 $to_arg_functions = unserialize($to_arg_functions);
webmaster@1	592 foreach ($to_arg_functions as $index => $function) {
webmaster@1	593 // Translate place-holders into real values.
webmaster@1	594 $arg = $function(!empty($map[$index]) ? $map[$index] : '', $map, $index);
webmaster@1	595 if (!empty($map[$index]) \|\| isset($arg)) {
webmaster@1	596 $map[$index] = $arg;
webmaster@1	597 }
webmaster@1	598 else {
webmaster@1	599 unset($map[$index]);
webmaster@1	600 }
webmaster@1	601 }
webmaster@1	602 }
webmaster@1	603 }
webmaster@1	604
webmaster@1	605 function menu_tail_to_arg($arg, $map, $index) {
webmaster@1	606 return implode('/', array_slice($map, $index));
webmaster@1	607 }
webmaster@1	608
webmaster@1	609 /**
webmaster@1	610 * This function is similar to _menu_translate() but does link-specific
webmaster@3	611 * preparation such as always calling to_arg functions.
webmaster@1	612 *
webmaster@1	613 * @param $item
webmaster@1	614 * A menu link
webmaster@1	615 * @return
webmaster@1	616 * Returns the map of path arguments with objects loaded as defined in the
webmaster@3	617 * $item['load_functions']:
webmaster@3	618 * - $item['access'] becomes TRUE if the item is accessible, FALSE otherwise.
webmaster@3	619 * - $item['href'] is generated from link_path, possibly by to_arg functions.
webmaster@3	620 * - $item['title'] is generated from link_title, and may be localized.
webmaster@3	621 * - $item['options'] is unserialized; it is also changed within the call
webmaster@3	622 * here to $item['localized_options'] by _menu_item_localize().
webmaster@1	623 */
webmaster@1	624 function _menu_link_translate(&$item) {
webmaster@1	625 $item['options'] = unserialize($item['options']);
webmaster@1	626 if ($item['external']) {
webmaster@1	627 $item['access'] = 1;
webmaster@1	628 $map = array();
webmaster@1	629 $item['href'] = $item['link_path'];
webmaster@1	630 $item['title'] = $item['link_title'];
webmaster@1	631 $item['localized_options'] = $item['options'];
webmaster@1	632 }
webmaster@1	633 else {
webmaster@1	634 $map = explode('/', $item['link_path']);
webmaster@1	635 _menu_link_map_translate($map, $item['to_arg_functions']);
webmaster@1	636 $item['href'] = implode('/', $map);
webmaster@1	637
webmaster@1	638 // Note - skip callbacks without real values for their arguments.
webmaster@1	639 if (strpos($item['href'], '%') !== FALSE) {
webmaster@1	640 $item['access'] = FALSE;
webmaster@1	641 return FALSE;
webmaster@1	642 }
webmaster@1	643 // menu_tree_check_access() may set this ahead of time for links to nodes.
webmaster@1	644 if (!isset($item['access'])) {
webmaster@1	645 if (!_menu_load_objects($item, $map)) {
webmaster@1	646 // An error occurred loading an object.
webmaster@1	647 $item['access'] = FALSE;
webmaster@1	648 return FALSE;
webmaster@1	649 }
webmaster@1	650 _menu_check_access($item, $map);
webmaster@1	651 }
webmaster@1	652
webmaster@1	653 _menu_item_localize($item, $map, TRUE);
webmaster@1	654 }
webmaster@1	655
webmaster@1	656 // Allow other customizations - e.g. adding a page-specific query string to the
webmaster@1	657 // options array. For performance reasons we only invoke this hook if the link
webmaster@1	658 // has the 'alter' flag set in the options array.
webmaster@1	659 if (!empty($item['options']['alter'])) {
webmaster@1	660 drupal_alter('translated_menu_link', $item, $map);
webmaster@1	661 }
webmaster@1	662
webmaster@1	663 return $map;
webmaster@1	664 }
webmaster@1	665
webmaster@1	666 /**
webmaster@1	667 * Get a loaded object from a router item.
webmaster@1	668 *
webmaster@1	669 * menu_get_object() will provide you the current node on paths like node/5,
webmaster@1	670 * node/5/revisions/48 etc. menu_get_object('user') will give you the user
webmaster@1	671 * account on user/5 etc. Note - this function should never be called within a
webmaster@1	672 * _to_arg function (like user_current_to_arg()) since this may result in an
webmaster@1	673 * infinite recursion.
webmaster@1	674 *
webmaster@1	675 * @param $type
webmaster@1	676 * Type of the object. These appear in hook_menu definitons as %type. Core
webmaster@1	677 * provides aggregator_feed, aggregator_category, contact, filter_format,
webmaster@1	678 * forum_term, menu, menu_link, node, taxonomy_vocabulary, user. See the
webmaster@1	679 * relevant {$type}_load function for more on each. Defaults to node.
webmaster@1	680 * @param $position
webmaster@1	681 * The expected position for $type object. For node/%node this is 1, for
webmaster@1	682 * comment/reply/%node this is 2. Defaults to 1.
webmaster@1	683 * @param $path
webmaster@3	684 * See menu_get_item() for more on this. Defaults to the current path.
webmaster@1	685 */
webmaster@1	686 function menu_get_object($type = 'node', $position = 1, $path = NULL) {
webmaster@1	687 $router_item = menu_get_item($path);
webmaster@1	688 if (isset($router_item['load_functions'][$position]) && !empty($router_item['map'][$position]) && $router_item['load_functions'][$position] == $type .'_load') {
webmaster@1	689 return $router_item['map'][$position];
webmaster@1	690 }
webmaster@1	691 }
webmaster@1	692
webmaster@1	693 /**
webmaster@1	694 * Render a menu tree based on the current path.
webmaster@1	695 *
webmaster@1	696 * The tree is expanded based on the current path and dynamic paths are also
webmaster@1	697 * changed according to the defined to_arg functions (for example the 'My account'
webmaster@1	698 * link is changed from user/% to a link with the current user's uid).
webmaster@1	699 *
webmaster@1	700 * @param $menu_name
webmaster@1	701 * The name of the menu.
webmaster@1	702 * @return
webmaster@1	703 * The rendered HTML of that menu on the current page.
webmaster@1	704 */
webmaster@1	705 function menu_tree($menu_name = 'navigation') {
webmaster@1	706 static $menu_output = array();
webmaster@1	707
webmaster@1	708 if (!isset($menu_output[$menu_name])) {
webmaster@1	709 $tree = menu_tree_page_data($menu_name);
webmaster@1	710 $menu_output[$menu_name] = menu_tree_output($tree);
webmaster@1	711 }
webmaster@1	712 return $menu_output[$menu_name];
webmaster@1	713 }
webmaster@1	714
webmaster@1	715 /**
webmaster@1	716 * Returns a rendered menu tree.
webmaster@1	717 *
webmaster@1	718 * @param $tree
webmaster@1	719 * A data structure representing the tree as returned from menu_tree_data.
webmaster@1	720 * @return
webmaster@1	721 * The rendered HTML of that data structure.
webmaster@1	722 */
webmaster@1	723 function menu_tree_output($tree) {
webmaster@1	724 $output = '';
webmaster@1	725 $items = array();
webmaster@1	726
webmaster@1	727 // Pull out just the menu items we are going to render so that we
webmaster@1	728 // get an accurate count for the first/last classes.
webmaster@1	729 foreach ($tree as $data) {
webmaster@1	730 if (!$data['link']['hidden']) {
webmaster@1	731 $items[] = $data;
webmaster@1	732 }
webmaster@1	733 }
webmaster@1	734
webmaster@1	735 $num_items = count($items);
webmaster@1	736 foreach ($items as $i => $data) {
webmaster@1	737 $extra_class = NULL;
webmaster@1	738 if ($i == 0) {
webmaster@1	739 $extra_class = 'first';
webmaster@1	740 }
webmaster@1	741 if ($i == $num_items - 1) {
webmaster@1	742 $extra_class = 'last';
webmaster@1	743 }
webmaster@1	744 $link = theme('menu_item_link', $data['link']);
webmaster@1	745 if ($data['below']) {
webmaster@1	746 $output .= theme('menu_item', $link, $data['link']['has_children'], menu_tree_output($data['below']), $data['link']['in_active_trail'], $extra_class);
webmaster@1	747 }
webmaster@1	748 else {
webmaster@1	749 $output .= theme('menu_item', $link, $data['link']['has_children'], '', $data['link']['in_active_trail'], $extra_class);
webmaster@1	750 }
webmaster@1	751 }
webmaster@1	752 return $output ? theme('menu_tree', $output) : '';
webmaster@1	753 }
webmaster@1	754
webmaster@1	755 /**
webmaster@1	756 * Get the data structure representing a named menu tree.
webmaster@1	757 *
webmaster@1	758 * Since this can be the full tree including hidden items, the data returned
webmaster@1	759 * may be used for generating an an admin interface or a select.
webmaster@1	760 *
webmaster@1	761 * @param $menu_name
webmaster@1	762 * The named menu links to return
webmaster@1	763 * @param $item
webmaster@1	764 * A fully loaded menu link, or NULL. If a link is supplied, only the
webmaster@1	765 * path to root will be included in the returned tree- as if this link
webmaster@1	766 * represented the current page in a visible menu.
webmaster@1	767 * @return
webmaster@1	768 * An tree of menu links in an array, in the order they should be rendered.
webmaster@1	769 */
webmaster@1	770 function menu_tree_all_data($menu_name = 'navigation', $item = NULL) {
webmaster@1	771 static $tree = array();
webmaster@1	772
webmaster@1	773 // Use $mlid as a flag for whether the data being loaded is for the whole tree.
webmaster@1	774 $mlid = isset($item['mlid']) ? $item['mlid'] : 0;
webmaster@1	775 // Generate the cache ID.
webmaster@1	776 $cid = 'links:'. $menu_name .':all:'. $mlid;
webmaster@1	777
webmaster@1	778 if (!isset($tree[$cid])) {
webmaster@1	779 // If the static variable doesn't have the data, check {cache_menu}.
webmaster@1	780 $cache = cache_get($cid, 'cache_menu');
webmaster@1	781 if ($cache && isset($cache->data)) {
webmaster@1	782 $data = $cache->data;
webmaster@1	783 }
webmaster@1	784 else {
webmaster@1	785 // Build and run the query, and build the tree.
webmaster@1	786 if ($mlid) {
webmaster@1	787 // The tree is for a single item, so we need to match the values in its
webmaster@1	788 // p columns and 0 (the top level) with the plid values of other links.
webmaster@1	789 $args = array(0);
webmaster@1	790 for ($i = 1; $i < MENU_MAX_DEPTH; $i++) {
webmaster@1	791 $args[] = $item["p$i"];
webmaster@1	792 }
webmaster@1	793 $args = array_unique($args);
webmaster@1	794 $placeholders = implode(', ', array_fill(0, count($args), '%d'));
webmaster@1	795 $where = ' AND ml.plid IN ('. $placeholders .')';
webmaster@1	796 $parents = $args;
webmaster@1	797 $parents[] = $item['mlid'];
webmaster@1	798 }
webmaster@1	799 else {
webmaster@1	800 // Get all links in this menu.
webmaster@1	801 $where = '';
webmaster@1	802 $args = array();
webmaster@1	803 $parents = array();
webmaster@1	804 }
webmaster@1	805 array_unshift($args, $menu_name);
webmaster@1	806 // Select the links from the table, and recursively build the tree. We
webmaster@1	807 // LEFT JOIN since there is no match in {menu_router} for an external
webmaster@1	808 // link.
webmaster@1	809 $data['tree'] = menu_tree_data(db_query("
webmaster@1	810 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.*
webmaster@1	811 FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
webmaster@1	812 WHERE ml.menu_name = '%s'". $where ."
webmaster@1	813 ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC", $args), $parents);
webmaster@1	814 $data['node_links'] = array();
webmaster@1	815 menu_tree_collect_node_links($data['tree'], $data['node_links']);
webmaster@1	816 // Cache the data.
webmaster@1	817 cache_set($cid, $data, 'cache_menu');
webmaster@1	818 }
webmaster@1	819 // Check access for the current user to each item in the tree.
webmaster@1	820 menu_tree_check_access($data['tree'], $data['node_links']);
webmaster@1	821 $tree[$cid] = $data['tree'];
webmaster@1	822 }
webmaster@1	823
webmaster@1	824 return $tree[$cid];
webmaster@1	825 }
webmaster@1	826
webmaster@1	827 /**
webmaster@1	828 * Get the data structure representing a named menu tree, based on the current page.
webmaster@1	829 *
webmaster@1	830 * The tree order is maintained by storing each parent in an individual
webmaster@1	831 * field, see http://drupal.org/node/141866 for more.
webmaster@1	832 *
webmaster@1	833 * @param $menu_name
webmaster@1	834 * The named menu links to return
webmaster@1	835 * @return
webmaster@1	836 * An array of menu links, in the order they should be rendered. The array
webmaster@1	837 * is a list of associative arrays -- these have two keys, link and below.
webmaster@1	838 * link is a menu item, ready for theming as a link. Below represents the
webmaster@1	839 * submenu below the link if there is one, and it is a subtree that has the
webmaster@1	840 * same structure described for the top-level array.
webmaster@1	841 */
webmaster@1	842 function menu_tree_page_data($menu_name = 'navigation') {
webmaster@1	843 static $tree = array();
webmaster@1	844
webmaster@1	845 // Load the menu item corresponding to the current page.
webmaster@1	846 if ($item = menu_get_item()) {
webmaster@1	847 // Generate the cache ID.
webmaster@1	848 $cid = 'links:'. $menu_name .':page:'. $item['href'] .':'. (int)$item['access'];
webmaster@1	849
webmaster@1	850 if (!isset($tree[$cid])) {
webmaster@1	851 // If the static variable doesn't have the data, check {cache_menu}.
webmaster@1	852 $cache = cache_get($cid, 'cache_menu');
webmaster@1	853 if ($cache && isset($cache->data)) {
webmaster@1	854 $data = $cache->data;
webmaster@1	855 }
webmaster@1	856 else {
webmaster@1	857 // Build and run the query, and build the tree.
webmaster@1	858 if ($item['access']) {
webmaster@1	859 // Check whether a menu link exists that corresponds to the current path.
webmaster@1	860 $args = array($menu_name, $item['href']);
webmaster@1	861 $placeholders = "'%s'";
webmaster@1	862 if (drupal_is_front_page()) {
webmaster@1	863 $args[] = '<front>';
webmaster@1	864 $placeholders .= ", '%s'";
webmaster@1	865 }
webmaster@1	866 $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 .")", $args));
webmaster@1	867
webmaster@1	868 if (empty($parents)) {
webmaster@1	869 // If no link exists, we may be on a local task that's not in the links.
webmaster@1	870 // TODO: Handle the case like a local task on a specific node in the menu.
webmaster@1	871 $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']));
webmaster@1	872 }
webmaster@1	873 // We always want all the top-level links with plid == 0.
webmaster@1	874 $parents[] = '0';
webmaster@1	875
webmaster@1	876 // Use array_values() so that the indices are numeric for array_merge().
webmaster@1	877 $args = $parents = array_unique(array_values($parents));
webmaster@1	878 $placeholders = implode(', ', array_fill(0, count($args), '%d'));
webmaster@1	879 $expanded = variable_get('menu_expanded', array());
webmaster@1	880 // Check whether the current menu has any links set to be expanded.
webmaster@1	881 if (in_array($menu_name, $expanded)) {
webmaster@1	882 // Collect all the links set to be expanded, and then add all of
webmaster@1	883 // their children to the list as well.
webmaster@1	884 do {
webmaster@1	885 $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));
webmaster@1	886 $num_rows = FALSE;
webmaster@1	887 while ($item = db_fetch_array($result)) {
webmaster@1	888 $args[] = $item['mlid'];
webmaster@1	889 $num_rows = TRUE;
webmaster@1	890 }
webmaster@1	891 $placeholders = implode(', ', array_fill(0, count($args), '%d'));
webmaster@1	892 } while ($num_rows);
webmaster@1	893 }
webmaster@1	894 array_unshift($args, $menu_name);
webmaster@1	895 }
webmaster@1	896 else {
webmaster@1	897 // Show only the top-level menu items when access is denied.
webmaster@1	898 $args = array($menu_name, '0');
webmaster@1	899 $placeholders = '%d';
webmaster@1	900 $parents = array();
webmaster@1	901 }
webmaster@1	902 // Select the links from the table, and recursively build the tree. We
webmaster@1	903 // LEFT JOIN since there is no match in {menu_router} for an external
webmaster@1	904 // link.
webmaster@1	905 $data['tree'] = menu_tree_data(db_query("
webmaster@1	906 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.*
webmaster@1	907 FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
webmaster@1	908 WHERE ml.menu_name = '%s' AND ml.plid IN (". $placeholders .")
webmaster@1	909 ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC", $args), $parents);
webmaster@1	910 $data['node_links'] = array();
webmaster@1	911 menu_tree_collect_node_links($data['tree'], $data['node_links']);
webmaster@1	912 // Cache the data.
webmaster@1	913 cache_set($cid, $data, 'cache_menu');
webmaster@1	914 }
webmaster@1	915 // Check access for the current user to each item in the tree.
webmaster@1	916 menu_tree_check_access($data['tree'], $data['node_links']);
webmaster@1	917 $tree[$cid] = $data['tree'];
webmaster@1	918 }
webmaster@1	919 return $tree[$cid];
webmaster@1	920 }
webmaster@1	921
webmaster@1	922 return array();
webmaster@1	923 }
webmaster@1	924
webmaster@1	925 /**
webmaster@1	926 * Recursive helper function - collect node links.
webmaster@1	927 */
webmaster@1	928 function menu_tree_collect_node_links(&$tree, &$node_links) {
webmaster@1	929 foreach ($tree as $key => $v) {
webmaster@1	930 if ($tree[$key]['link']['router_path'] == 'node/%') {
webmaster@1	931 $nid = substr($tree[$key]['link']['link_path'], 5);
webmaster@1	932 if (is_numeric($nid)) {
webmaster@1	933 $node_links[$nid][$tree[$key]['link']['mlid']] = &$tree[$key]['link'];
webmaster@1	934 $tree[$key]['link']['access'] = FALSE;
webmaster@1	935 }
webmaster@1	936 }
webmaster@1	937 if ($tree[$key]['below']) {
webmaster@1	938 menu_tree_collect_node_links($tree[$key]['below'], $node_links);
webmaster@1	939 }
webmaster@1	940 }
webmaster@1	941 }
webmaster@1	942
webmaster@1	943 /**
webmaster@1	944 * Check access and perform other dynamic operations for each link in the tree.
webmaster@1	945 */
webmaster@1	946 function menu_tree_check_access(&$tree, $node_links = array()) {
webmaster@1	947
webmaster@1	948 if ($node_links) {
webmaster@1	949 // Use db_rewrite_sql to evaluate view access without loading each full node.
webmaster@1	950 $nids = array_keys($node_links);
webmaster@1	951 $placeholders = '%d'. str_repeat(', %d', count($nids) - 1);
webmaster@1	952 $result = db_query(db_rewrite_sql("SELECT n.nid FROM {node} n WHERE n.status = 1 AND n.nid IN (". $placeholders .")"), $nids);
webmaster@1	953 while ($node = db_fetch_array($result)) {
webmaster@1	954 $nid = $node['nid'];
webmaster@1	955 foreach ($node_links[$nid] as $mlid => $link) {
webmaster@1	956 $node_links[$nid][$mlid]['access'] = TRUE;
webmaster@1	957 }
webmaster@1	958 }
webmaster@1	959 }
webmaster@1	960 _menu_tree_check_access($tree);
webmaster@1	961 return;
webmaster@1	962 }
webmaster@1	963
webmaster@1	964 /**
webmaster@1	965 * Recursive helper function for menu_tree_check_access()
webmaster@1	966 */
webmaster@1	967 function _menu_tree_check_access(&$tree) {
webmaster@1	968 $new_tree = array();
webmaster@1	969 foreach ($tree as $key => $v) {
webmaster@1	970 $item = &$tree[$key]['link'];
webmaster@1	971 _menu_link_translate($item);
webmaster@1	972 if ($item['access']) {
webmaster@1	973 if ($tree[$key]['below']) {
webmaster@1	974 _menu_tree_check_access($tree[$key]['below']);
webmaster@1	975 }
webmaster@1	976 // The weights are made a uniform 5 digits by adding 50000 as an offset.
webmaster@1	977 // After _menu_link_translate(), $item['title'] has the localized link title.
webmaster@1	978 // Adding the mlid to the end of the index insures that it is unique.
webmaster@1	979 $new_tree[(50000 + $item['weight']) .' '. $item['title'] .' '. $item['mlid']] = $tree[$key];
webmaster@1	980 }
webmaster@1	981 }
webmaster@1	982 // Sort siblings in the tree based on the weights and localized titles.
webmaster@1	983 ksort($new_tree);
webmaster@1	984 $tree = $new_tree;
webmaster@1	985 }
webmaster@1	986
webmaster@1	987 /**
webmaster@1	988 * Build the data representing a menu tree.
webmaster@1	989 *
webmaster@1	990 * @param $result
webmaster@1	991 * The database result.
webmaster@1	992 * @param $parents
webmaster@1	993 * An array of the plid values that represent the path from the current page
webmaster@1	994 * to the root of the menu tree.
webmaster@1	995 * @param $depth
webmaster@1	996 * The depth of the current menu tree.
webmaster@1	997 * @return
webmaster@1	998 * See menu_tree_page_data for a description of the data structure.
webmaster@1	999 */
webmaster@1	1000 function menu_tree_data($result = NULL, $parents = array(), $depth = 1) {
webmaster@1	1001 list(, $tree) = _menu_tree_data($result, $parents, $depth);
webmaster@1	1002 return $tree;
webmaster@1	1003 }
webmaster@1	1004
webmaster@1	1005 /**
webmaster@1	1006 * Recursive helper function to build the data representing a menu tree.
webmaster@1	1007 *
webmaster@1	1008 * The function is a bit complex because the rendering of an item depends on
webmaster@1	1009 * the next menu item. So we are always rendering the element previously
webmaster@1	1010 * processed not the current one.
webmaster@1	1011 */
webmaster@1	1012 function _menu_tree_data($result, $parents, $depth, $previous_element = '') {
webmaster@1	1013 $remnant = NULL;
webmaster@1	1014 $tree = array();
webmaster@1	1015 while ($item = db_fetch_array($result)) {
webmaster@1	1016 // We need to determine if we're on the path to root so we can later build
webmaster@1	1017 // the correct active trail and breadcrumb.
webmaster@1	1018 $item['in_active_trail'] = in_array($item['mlid'], $parents);
webmaster@1	1019 // The current item is the first in a new submenu.
webmaster@1	1020 if ($item['depth'] > $depth) {
webmaster@1	1021 // _menu_tree returns an item and the menu tree structure.
webmaster@1	1022 list($item, $below) = _menu_tree_data($result, $parents, $item['depth'], $item);
webmaster@1	1023 if ($previous_element) {
webmaster@1	1024 $tree[$previous_element['mlid']] = array(
webmaster@1	1025 'link' => $previous_element,
webmaster@1	1026 'below' => $below,
webmaster@1	1027 );
webmaster@1	1028 }
webmaster@1	1029 else {
webmaster@1	1030 $tree = $below;
webmaster@1	1031 }
webmaster@1	1032 // We need to fall back one level.
webmaster@1	1033 if (!isset($item) \|\| $item['depth'] < $depth) {
webmaster@1	1034 return array($item, $tree);
webmaster@1	1035 }
webmaster@1	1036 // This will be the link to be output in the next iteration.
webmaster@1	1037 $previous_element = $item;
webmaster@1	1038 }
webmaster@1	1039 // We are at the same depth, so we use the previous element.
webmaster@1	1040 elseif ($item['depth'] == $depth) {
webmaster@1	1041 if ($previous_element) {
webmaster@1	1042 // Only the first time.
webmaster@1	1043 $tree[$previous_element['mlid']] = array(
webmaster@1	1044 'link' => $previous_element,
webmaster@1	1045 'below' => FALSE,
webmaster@1	1046 );
webmaster@1	1047 }
webmaster@1	1048 // This will be the link to be output in the next iteration.
webmaster@1	1049 $previous_element = $item;
webmaster@1	1050 }
webmaster@1	1051 // The submenu ended with the previous item, so pass back the current item.
webmaster@1	1052 else {
webmaster@1	1053 $remnant = $item;
webmaster@1	1054 break;
webmaster@1	1055 }
webmaster@1	1056 }
webmaster@1	1057 if ($previous_element) {
webmaster@1	1058 // We have one more link dangling.
webmaster@1	1059 $tree[$previous_element['mlid']] = array(
webmaster@1	1060 'link' => $previous_element,
webmaster@1	1061 'below' => FALSE,
webmaster@1	1062 );
webmaster@1	1063 }
webmaster@1	1064 return array($remnant, $tree);
webmaster@1	1065 }
webmaster@1	1066
webmaster@1	1067 /**
webmaster@1	1068 * Generate the HTML output for a single menu link.
webmaster@1	1069 *
webmaster@1	1070 * @ingroup themeable
webmaster@1	1071 */
webmaster@1	1072 function theme_menu_item_link($link) {
webmaster@1	1073 if (empty($link['localized_options'])) {
webmaster@1	1074 $link['localized_options'] = array();
webmaster@1	1075 }
webmaster@1	1076
webmaster@1	1077 return l($link['title'], $link['href'], $link['localized_options']);
webmaster@1	1078 }
webmaster@1	1079
webmaster@1	1080 /**
webmaster@1	1081 * Generate the HTML output for a menu tree
webmaster@1	1082 *
webmaster@1	1083 * @ingroup themeable
webmaster@1	1084 */
webmaster@1	1085 function theme_menu_tree($tree) {
webmaster@1	1086 return '<ul class="menu">'. $tree .'</ul>';
webmaster@1	1087 }
webmaster@1	1088
webmaster@1	1089 /**
webmaster@1	1090 * Generate the HTML output for a menu item and submenu.
webmaster@1	1091 *
webmaster@1	1092 * @ingroup themeable
webmaster@1	1093 */
webmaster@1	1094 function theme_menu_item($link, $has_children, $menu = '', $in_active_trail = FALSE, $extra_class = NULL) {
webmaster@1	1095 $class = ($menu ? 'expanded' : ($has_children ? 'collapsed' : 'leaf'));
webmaster@1	1096 if (!empty($extra_class)) {
webmaster@1	1097 $class .= ' '. $extra_class;
webmaster@1	1098 }
webmaster@1	1099 if ($in_active_trail) {
webmaster@1	1100 $class .= ' active-trail';
webmaster@1	1101 }
webmaster@1	1102 return '<li class="'. $class .'">'. $link . $menu ."</li>\n";
webmaster@1	1103 }
webmaster@1	1104
webmaster@1	1105 /**
webmaster@1	1106 * Generate the HTML output for a single local task link.
webmaster@1	1107 *
webmaster@1	1108 * @ingroup themeable
webmaster@1	1109 */
webmaster@1	1110 function theme_menu_local_task($link, $active = FALSE) {
webmaster@1	1111 return '<li '. ($active ? 'class="active" ' : '') .'>'. $link ."</li>\n";
webmaster@1	1112 }
webmaster@1	1113
webmaster@1	1114 /**
webmaster@1	1115 * Generates elements for the $arg array in the help hook.
webmaster@1	1116 */
webmaster@1	1117 function drupal_help_arg($arg = array()) {
webmaster@1	1118 // Note - the number of empty elements should be > MENU_MAX_PARTS.
webmaster@1	1119 return $arg + array('', '', '', '', '', '', '', '', '', '', '', '');
webmaster@1	1120 }
webmaster@1	1121
webmaster@1	1122 /**
webmaster@1	1123 * Returns the help associated with the active menu item.
webmaster@1	1124 */
webmaster@1	1125 function menu_get_active_help() {
webmaster@1	1126 $output = '';
webmaster@1	1127 $router_path = menu_tab_root_path();
webmaster@1	1128
webmaster@1	1129 $arg = drupal_help_arg(arg(NULL));
webmaster@1	1130 $empty_arg = drupal_help_arg();
webmaster@1	1131
webmaster@1	1132 foreach (module_list() as $name) {
webmaster@1	1133 if (module_hook($name, 'help')) {
webmaster@1	1134 // Lookup help for this path.
webmaster@1	1135 if ($help = module_invoke($name, 'help', $router_path, $arg)) {
webmaster@1	1136 $output .= $help ."\n";
webmaster@1	1137 }
webmaster@1	1138 // Add "more help" link on admin pages if the module provides a
webmaster@1	1139 // standalone help page.
webmaster@1	1140 if ($arg[0] == "admin" && module_exists('help') && module_invoke($name, 'help', 'admin/help#'. $arg[2], $empty_arg) && $help) {
webmaster@1	1141 $output .= theme("more_help_link", url('admin/help/'. $arg[2]));
webmaster@1	1142 }
webmaster@1	1143 }
webmaster@1	1144 }
webmaster@1	1145 return $output;
webmaster@1	1146 }
webmaster@1	1147
webmaster@1	1148 /**
webmaster@1	1149 * Build a list of named menus.
webmaster@1	1150 */
webmaster@1	1151 function menu_get_names($reset = FALSE) {
webmaster@1	1152 static $names;
webmaster@1	1153
webmaster@1	1154 if ($reset \|\| empty($names)) {
webmaster@1	1155 $names = array();
webmaster@1	1156 $result = db_query("SELECT DISTINCT(menu_name) FROM {menu_links} ORDER BY menu_name");
webmaster@1	1157 while ($name = db_fetch_array($result)) {
webmaster@1	1158 $names[] = $name['menu_name'];
webmaster@1	1159 }
webmaster@1	1160 }
webmaster@1	1161 return $names;
webmaster@1	1162 }
webmaster@1	1163
webmaster@1	1164 /**
webmaster@1	1165 * Return an array containing the names of system-defined (default) menus.
webmaster@1	1166 */
webmaster@1	1167 function menu_list_system_menus() {
webmaster@1	1168 return array('navigation', 'primary-links', 'secondary-links');
webmaster@1	1169 }
webmaster@1	1170
webmaster@1	1171 /**
webmaster@1	1172 * Return an array of links to be rendered as the Primary links.
webmaster@1	1173 */
webmaster@1	1174 function menu_primary_links() {
webmaster@1	1175 return menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'));
webmaster@1	1176 }
webmaster@1	1177
webmaster@1	1178 /**
webmaster@1	1179 * Return an array of links to be rendered as the Secondary links.
webmaster@1	1180 */
webmaster@1	1181 function menu_secondary_links() {
webmaster@1	1182
webmaster@1	1183 // If the secondary menu source is set as the primary menu, we display the
webmaster@1	1184 // second level of the primary menu.
webmaster@1	1185 if (variable_get('menu_secondary_links_source', 'secondary-links') == variable_get('menu_primary_links_source', 'primary-links')) {
webmaster@1	1186 return menu_navigation_links(variable_get('menu_primary_links_source', 'primary-links'), 1);
webmaster@1	1187 }
webmaster@1	1188 else {
webmaster@1	1189 return menu_navigation_links(variable_get('menu_secondary_links_source', 'secondary-links'), 0);
webmaster@1	1190 }
webmaster@1	1191 }
webmaster@1	1192
webmaster@1	1193 /**
webmaster@1	1194 * Return an array of links for a navigation menu.
webmaster@1	1195 *
webmaster@1	1196 * @param $menu_name
webmaster@1	1197 * The name of the menu.
webmaster@1	1198 * @param $level
webmaster@1	1199 * Optional, the depth of the menu to be returned.
webmaster@1	1200 * @return
webmaster@1	1201 * An array of links of the specified menu and level.
webmaster@1	1202 */
webmaster@1	1203 function menu_navigation_links($menu_name, $level = 0) {
webmaster@1	1204 // Don't even bother querying the menu table if no menu is specified.
webmaster@1	1205 if (empty($menu_name)) {
webmaster@1	1206 return array();
webmaster@1	1207 }
webmaster@1	1208
webmaster@1	1209 // Get the menu hierarchy for the current page.
webmaster@1	1210 $tree = menu_tree_page_data($menu_name);
webmaster@1	1211
webmaster@1	1212 // Go down the active trail until the right level is reached.
webmaster@1	1213 while ($level-- > 0 && $tree) {
webmaster@1	1214 // Loop through the current level's items until we find one that is in trail.
webmaster@1	1215 while ($item = array_shift($tree)) {
webmaster@1	1216 if ($item['link']['in_active_trail']) {
webmaster@1	1217 // If the item is in the active trail, we continue in the subtree.
webmaster@1	1218 $tree = empty($item['below']) ? array() : $item['below'];
webmaster@1	1219 break;
webmaster@1	1220 }
webmaster@1	1221 }
webmaster@1	1222 }
webmaster@1	1223
webmaster@1	1224 // Create a single level of links.
webmaster@1	1225 $links = array();
webmaster@1	1226 foreach ($tree as $item) {
webmaster@1	1227 if (!$item['link']['hidden']) {
webmaster@1	1228 $l = $item['link']['localized_options'];
webmaster@1	1229 $l['href'] = $item['link']['href'];
webmaster@1	1230 $l['title'] = $item['link']['title'];
webmaster@1	1231 // Keyed with unique menu id to generate classes from theme_links().
webmaster@1	1232 $links['menu-'. $item['link']['mlid']] = $l;
webmaster@1	1233 }
webmaster@1	1234 }
webmaster@1	1235 return $links;
webmaster@1	1236 }
webmaster@1	1237
webmaster@1	1238 /**
webmaster@1	1239 * Collects the local tasks (tabs) for a given level.
webmaster@1	1240 *
webmaster@1	1241 * @param $level
webmaster@1	1242 * The level of tasks you ask for. Primary tasks are 0, secondary are 1.
webmaster@1	1243 * @param $return_root
webmaster@1	1244 * Whether to return the root path for the current page.
webmaster@1	1245 * @return
webmaster@1	1246 * Themed output corresponding to the tabs of the requested level, or
webmaster@1	1247 * router path if $return_root == TRUE. This router path corresponds to
webmaster@1	1248 * a parent tab, if the current page is a default local task.
webmaster@1	1249 */
webmaster@1	1250 function menu_local_tasks($level = 0, $return_root = FALSE) {
webmaster@1	1251 static $tabs;
webmaster@1	1252 static $root_path;
webmaster@1	1253
webmaster@1	1254 if (!isset($tabs)) {
webmaster@1	1255 $tabs = array();
webmaster@1	1256
webmaster@1	1257 $router_item = menu_get_item();
webmaster@1	1258 if (!$router_item \|\| !$router_item['access']) {
webmaster@1	1259 return '';
webmaster@1	1260 }
webmaster@1	1261 // Get all tabs and the root page.
webmaster@1	1262 $result = db_query("SELECT * FROM {menu_router} WHERE tab_root = '%s' ORDER BY weight, title", $router_item['tab_root']);
webmaster@1	1263 $map = arg();
webmaster@1	1264 $children = array();
webmaster@1	1265 $tasks = array();
webmaster@1	1266 $root_path = $router_item['path'];
webmaster@1	1267
webmaster@1	1268 while ($item = db_fetch_array($result)) {
webmaster@1	1269 _menu_translate($item, $map, TRUE);
webmaster@1	1270 if ($item['tab_parent']) {
webmaster@1	1271 // All tabs, but not the root page.
webmaster@1	1272 $children[$item['tab_parent']][$item['path']] = $item;
webmaster@1	1273 }
webmaster@1	1274 // Store the translated item for later use.
webmaster@1	1275 $tasks[$item['path']] = $item;
webmaster@1	1276 }
webmaster@1	1277
webmaster@1	1278 // Find all tabs below the current path.
webmaster@1	1279 $path = $router_item['path'];
webmaster@1	1280 // Tab parenting may skip levels, so the number of parts in the path may not
webmaster@1	1281 // equal the depth. Thus we use the $depth counter (offset by 1000 for ksort).
webmaster@1	1282 $depth = 1001;
webmaster@1	1283 while (isset($children[$path])) {
webmaster@1	1284 $tabs_current = '';
webmaster@1	1285 $next_path = '';
webmaster@1	1286 $count = 0;
webmaster@1	1287 foreach ($children[$path] as $item) {
webmaster@1	1288 if ($item['access']) {
webmaster@1	1289 $count++;
webmaster@1	1290 // The default task is always active.
webmaster@1	1291 if ($item['type'] == MENU_DEFAULT_LOCAL_TASK) {
webmaster@1	1292 // Find the first parent which is not a default local task.
webmaster@1	1293 for ($p = $item['tab_parent']; $tasks[$p]['type'] == MENU_DEFAULT_LOCAL_TASK; $p = $tasks[$p]['tab_parent']);
webmaster@1	1294 $link = theme('menu_item_link', array('href' => $tasks[$p]['href']) + $item);
webmaster@1	1295 $tabs_current .= theme('menu_local_task', $link, TRUE);
webmaster@1	1296 $next_path = $item['path'];
webmaster@1	1297 }
webmaster@1	1298 else {
webmaster@1	1299 $link = theme('menu_item_link', $item);
webmaster@1	1300 $tabs_current .= theme('menu_local_task', $link);
webmaster@1	1301 }
webmaster@1	1302 }
webmaster@1	1303 }
webmaster@1	1304 $path = $next_path;
webmaster@1	1305 $tabs[$depth]['count'] = $count;
webmaster@1	1306 $tabs[$depth]['output'] = $tabs_current;
webmaster@1	1307 $depth++;
webmaster@1	1308 }
webmaster@1	1309
webmaster@1	1310 // Find all tabs at the same level or above the current one.
webmaster@1	1311 $parent = $router_item['tab_parent'];
webmaster@1	1312 $path = $router_item['path'];
webmaster@1	1313 $current = $router_item;
webmaster@1	1314 $depth = 1000;
webmaster@1	1315 while (isset($children[$parent])) {
webmaster@1	1316 $tabs_current = '';
webmaster@1	1317 $next_path = '';
webmaster@1	1318 $next_parent = '';
webmaster@1	1319 $count = 0;
webmaster@1	1320 foreach ($children[$parent] as $item) {
webmaster@1	1321 if ($item['access']) {
webmaster@1	1322 $count++;
webmaster@1	1323 if ($item['type'] == MENU_DEFAULT_LOCAL_TASK) {
webmaster@1	1324 // Find the first parent which is not a default local task.
webmaster@1	1325 for ($p = $item['tab_parent']; $tasks[$p]['type'] == MENU_DEFAULT_LOCAL_TASK; $p = $tasks[$p]['tab_parent']);
webmaster@1	1326 $link = theme('menu_item_link', array('href' => $tasks[$p]['href']) + $item);
webmaster@1	1327 if ($item['path'] == $router_item['path']) {
webmaster@1	1328 $root_path = $tasks[$p]['path'];
webmaster@1	1329 }
webmaster@1	1330 }
webmaster@1	1331 else {
webmaster@1	1332 $link = theme('menu_item_link', $item);
webmaster@1	1333 }
webmaster@1	1334 // We check for the active tab.
webmaster@1	1335 if ($item['path'] == $path) {
webmaster@1	1336 $tabs_current .= theme('menu_local_task', $link, TRUE);
webmaster@1	1337 $next_path = $item['tab_parent'];
webmaster@1	1338 if (isset($tasks[$next_path])) {
webmaster@1	1339 $next_parent = $tasks[$next_path]['tab_parent'];
webmaster@1	1340 }
webmaster@1	1341 }
webmaster@1	1342 else {
webmaster@1	1343 $tabs_current .= theme('menu_local_task', $link);
webmaster@1	1344 }
webmaster@1	1345 }
webmaster@1	1346 }
webmaster@1	1347 $path = $next_path;
webmaster@1	1348 $parent = $next_parent;
webmaster@1	1349 $tabs[$depth]['count'] = $count;
webmaster@1	1350 $tabs[$depth]['output'] = $tabs_current;
webmaster@1	1351 $depth--;
webmaster@1	1352 }
webmaster@1	1353 // Sort by depth.
webmaster@1	1354 ksort($tabs);
webmaster@1	1355 // Remove the depth, we are interested only in their relative placement.
webmaster@1	1356 $tabs = array_values($tabs);
webmaster@1	1357 }
webmaster@1	1358
webmaster@1	1359 if ($return_root) {
webmaster@1	1360 return $root_path;
webmaster@1	1361 }
webmaster@1	1362 else {
webmaster@1	1363 // We do not display single tabs.
webmaster@1	1364 return (isset($tabs[$level]) && $tabs[$level]['count'] > 1) ? $tabs[$level]['output'] : '';
webmaster@1	1365 }
webmaster@1	1366 }
webmaster@1	1367
webmaster@1	1368 /**
webmaster@1	1369 * Returns the rendered local tasks at the top level.
webmaster@1	1370 */
webmaster@1	1371 function menu_primary_local_tasks() {
webmaster@1	1372 return menu_local_tasks(0);
webmaster@1	1373 }
webmaster@1	1374
webmaster@1	1375 /**
webmaster@1	1376 * Returns the rendered local tasks at the second level.
webmaster@1	1377 */
webmaster@1	1378 function menu_secondary_local_tasks() {
webmaster@1	1379 return menu_local_tasks(1);
webmaster@1	1380 }
webmaster@1	1381
webmaster@1	1382 /**
webmaster@1	1383 * Returns the router path, or the path of the parent tab of a default local task.
webmaster@1	1384 */
webmaster@1	1385 function menu_tab_root_path() {
webmaster@1	1386 return menu_local_tasks(0, TRUE);
webmaster@1	1387 }
webmaster@1	1388
webmaster@1	1389 /**
webmaster@1	1390 * Returns the rendered local tasks. The default implementation renders them as tabs.
webmaster@1	1391 *
webmaster@1	1392 * @ingroup themeable
webmaster@1	1393 */
webmaster@1	1394 function theme_menu_local_tasks() {
webmaster@1	1395 $output = '';
webmaster@1	1396
webmaster@1	1397 if ($primary = menu_primary_local_tasks()) {
webmaster@1	1398 $output .= "<ul class=\"tabs primary\">\n". $primary ."</ul>\n";
webmaster@1	1399 }
webmaster@1	1400 if ($secondary = menu_secondary_local_tasks()) {
webmaster@1	1401 $output .= "<ul class=\"tabs secondary\">\n". $secondary ."</ul>\n";
webmaster@1	1402 }
webmaster@1	1403
webmaster@1	1404 return $output;
webmaster@1	1405 }
webmaster@1	1406
webmaster@1	1407 /**
webmaster@1	1408 * Set (or get) the active menu for the current page - determines the active trail.
webmaster@1	1409 */
webmaster@1	1410 function menu_set_active_menu_name($menu_name = NULL) {
webmaster@1	1411 static $active;
webmaster@1	1412
webmaster@1	1413 if (isset($menu_name)) {
webmaster@1	1414 $active = $menu_name;
webmaster@1	1415 }
webmaster@1	1416 elseif (!isset($active)) {
webmaster@1	1417 $active = 'navigation';
webmaster@1	1418 }
webmaster@1	1419 return $active;
webmaster@1	1420 }
webmaster@1	1421
webmaster@1	1422 /**
webmaster@1	1423 * Get the active menu for the current page - determines the active trail.
webmaster@1	1424 */
webmaster@1	1425 function menu_get_active_menu_name() {
webmaster@1	1426 return menu_set_active_menu_name();
webmaster@1	1427 }
webmaster@1	1428
webmaster@1	1429 /**
webmaster@1	1430 * Set the active path, which determines which page is loaded.
webmaster@1	1431 *
webmaster@1	1432 * @param $path
webmaster@1	1433 * A Drupal path - not a path alias.
webmaster@1	1434 *
webmaster@1	1435 * Note that this may not have the desired effect unless invoked very early
webmaster@1	1436 * in the page load, such as during hook_boot, or unless you call
webmaster@1	1437 * menu_execute_active_handler() to generate your page output.
webmaster@1	1438 */
webmaster@1	1439 function menu_set_active_item($path) {
webmaster@1	1440 $_GET['q'] = $path;
webmaster@1	1441 }
webmaster@1	1442
webmaster@1	1443 /**
webmaster@1	1444 * Set (or get) the active trail for the current page - the path to root in the menu tree.
webmaster@1	1445 */
webmaster@1	1446 function menu_set_active_trail($new_trail = NULL) {
webmaster@1	1447 static $trail;
webmaster@1	1448
webmaster@1	1449 if (isset($new_trail)) {
webmaster@1	1450 $trail = $new_trail;
webmaster@1	1451 }
webmaster@1	1452 elseif (!isset($trail)) {
webmaster@1	1453 $trail = array();
webmaster@1	1454 $trail[] = array('title' => t('Home'), 'href' => '<front>', 'localized_options' => array(), 'type' => 0);
webmaster@1	1455 $item = menu_get_item();
webmaster@1	1456
webmaster@1	1457 // Check whether the current item is a local task (displayed as a tab).
webmaster@1	1458 if ($item['tab_parent']) {
webmaster@1	1459 // The title of a local task is used for the tab, never the page title.
webmaster@1	1460 // Thus, replace it with the item corresponding to the root path to get
webmaster@1	1461 // the relevant href and title. For example, the menu item corresponding
webmaster@1	1462 // to 'admin' is used when on the 'By module' tab at 'admin/by-module'.
webmaster@1	1463 $parts = explode('/', $item['tab_root']);
webmaster@1	1464 $args = arg();
webmaster@1	1465 // Replace wildcards in the root path using the current path.
webmaster@1	1466 foreach ($parts as $index => $part) {
webmaster@1	1467 if ($part == '%') {
webmaster@1	1468 $parts[$index] = $args[$index];
webmaster@1	1469 }
webmaster@1	1470 }
webmaster@1	1471 // Retrieve the menu item using the root path after wildcard replacement.
webmaster@1	1472 $root_item = menu_get_item(implode('/', $parts));
webmaster@1	1473 if ($root_item && $root_item['access']) {
webmaster@1	1474 $item = $root_item;
webmaster@1	1475 }
webmaster@1	1476 }
webmaster@1	1477
webmaster@1	1478 $tree = menu_tree_page_data(menu_get_active_menu_name());
webmaster@1	1479 list($key, $curr) = each($tree);
webmaster@1	1480
webmaster@1	1481 while ($curr) {
webmaster@1	1482 // Terminate the loop when we find the current path in the active trail.
webmaster@1	1483 if ($curr['link']['href'] == $item['href']) {
webmaster@1	1484 $trail[] = $curr['link'];
webmaster@1	1485 $curr = FALSE;
webmaster@1	1486 }
webmaster@1	1487 else {
webmaster@1	1488 // Move to the child link if it's in the active trail.
webmaster@1	1489 if ($curr['below'] && $curr['link']['in_active_trail']) {
webmaster@1	1490 $trail[] = $curr['link'];
webmaster@1	1491 $tree = $curr['below'];
webmaster@1	1492 }
webmaster@1	1493 list($key, $curr) = each($tree);
webmaster@1	1494 }
webmaster@1	1495 }
webmaster@1	1496 // Make sure the current page is in the trail (needed for the page title),
webmaster@1	1497 // but exclude tabs and the front page.
webmaster@1	1498 $last = count($trail) - 1;
webmaster@1	1499 if ($trail[$last]['href'] != $item['href'] && !(bool)($item['type'] & MENU_IS_LOCAL_TASK) && !drupal_is_front_page()) {
webmaster@1	1500 $trail[] = $item;
webmaster@1	1501 }
webmaster@1	1502 }
webmaster@1	1503 return $trail;
webmaster@1	1504 }
webmaster@1	1505
webmaster@1	1506 /**
webmaster@1	1507 * Get the active trail for the current page - the path to root in the menu tree.
webmaster@1	1508 */
webmaster@1	1509 function menu_get_active_trail() {
webmaster@1	1510 return menu_set_active_trail();
webmaster@1	1511 }
webmaster@1	1512
webmaster@1	1513 /**
webmaster@1	1514 * Get the breadcrumb for the current page, as determined by the active trail.
webmaster@1	1515 */
webmaster@1	1516 function menu_get_active_breadcrumb() {
webmaster@1	1517 $breadcrumb = array();
webmaster@1	1518
webmaster@1	1519 // No breadcrumb for the front page.
webmaster@1	1520 if (drupal_is_front_page()) {
webmaster@1	1521 return $breadcrumb;
webmaster@1	1522 }
webmaster@1	1523
webmaster@1	1524 $item = menu_get_item();
webmaster@1	1525 if ($item && $item['access']) {
webmaster@1	1526 $active_trail = menu_get_active_trail();
webmaster@1	1527
webmaster@1	1528 foreach ($active_trail as $parent) {
webmaster@1	1529 $breadcrumb[] = l($parent['title'], $parent['href'], $parent['localized_options']);
webmaster@1	1530 }
webmaster@1	1531 $end = end($active_trail);
webmaster@1	1532
webmaster@1	1533 // Don't show a link to the current page in the breadcrumb trail.
webmaster@1	1534 if ($item['href'] == $end['href'] \|\| ($item['type'] == MENU_DEFAULT_LOCAL_TASK && $end['href'] != '<front>')) {
webmaster@1	1535 array_pop($breadcrumb);
webmaster@1	1536 }
webmaster@1	1537 }
webmaster@1	1538 return $breadcrumb;
webmaster@1	1539 }
webmaster@1	1540
webmaster@1	1541 /**
webmaster@1	1542 * Get the title of the current page, as determined by the active trail.
webmaster@1	1543 */
webmaster@1	1544 function menu_get_active_title() {
webmaster@1	1545 $active_trail = menu_get_active_trail();
webmaster@1	1546
webmaster@1	1547 foreach (array_reverse($active_trail) as $item) {
webmaster@1	1548 if (!(bool)($item['type'] & MENU_IS_LOCAL_TASK)) {
webmaster@1	1549 return $item['title'];
webmaster@1	1550 }
webmaster@1	1551 }
webmaster@1	1552 }
webmaster@1	1553
webmaster@1	1554 /**
webmaster@1	1555 * Get a menu link by its mlid, access checked and link translated for rendering.
webmaster@1	1556 *
webmaster@1	1557 * This function should never be called from within node_load() or any other
webmaster@1	1558 * function used as a menu object load function since an infinite recursion may
webmaster@1	1559 * occur.
webmaster@1	1560 *
webmaster@1	1561 * @param $mlid
webmaster@1	1562 * The mlid of the menu item.
webmaster@1	1563 * @return
webmaster@1	1564 * A menu link, with $item['access'] filled and link translated for
webmaster@1	1565 * rendering.
webmaster@1	1566 */
webmaster@1	1567 function menu_link_load($mlid) {
webmaster@1	1568 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", $mlid))) {
webmaster@1	1569 _menu_link_translate($item);
webmaster@1	1570 return $item;
webmaster@1	1571 }
webmaster@1	1572 return FALSE;
webmaster@1	1573 }
webmaster@1	1574
webmaster@1	1575 /**
webmaster@1	1576 * Clears the cached cached data for a single named menu.
webmaster@1	1577 */
webmaster@1	1578 function menu_cache_clear($menu_name = 'navigation') {
webmaster@1	1579 static $cache_cleared = array();
webmaster@1	1580
webmaster@1	1581 if (empty($cache_cleared[$menu_name])) {
webmaster@1	1582 cache_clear_all('links:'. $menu_name .':', 'cache_menu', TRUE);
webmaster@1	1583 $cache_cleared[$menu_name] = 1;
webmaster@1	1584 }
webmaster@1	1585 elseif ($cache_cleared[$menu_name] == 1) {
webmaster@1	1586 register_shutdown_function('cache_clear_all', 'links:'. $menu_name .':', 'cache_menu', TRUE);
webmaster@1	1587 $cache_cleared[$menu_name] = 2;
webmaster@1	1588 }
webmaster@1	1589 }
webmaster@1	1590
webmaster@1	1591 /**
webmaster@1	1592 * Clears all cached menu data. This should be called any time broad changes
webmaster@1	1593 * might have been made to the router items or menu links.
webmaster@1	1594 */
webmaster@1	1595 function menu_cache_clear_all() {
webmaster@1	1596 cache_clear_all('*', 'cache_menu', TRUE);
webmaster@1	1597 }
webmaster@1	1598
webmaster@1	1599 /**
webmaster@1	1600 * (Re)populate the database tables used by various menu functions.
webmaster@1	1601 *
webmaster@1	1602 * This function will clear and populate the {menu_router} table, add entries
webmaster@1	1603 * to {menu_links} for new router items, then remove stale items from
webmaster@1	1604 * {menu_links}. If called from update.php or install.php, it will also
webmaster@1	1605 * schedule a call to itself on the first real page load from
webmaster@1	1606 * menu_execute_active_handler(), because the maintenance page environment
webmaster@1	1607 * is different and leaves stale data in the menu tables.
webmaster@1	1608 */
webmaster@1	1609 function menu_rebuild() {
webmaster@1	1610 variable_del('menu_rebuild_needed');
webmaster@1	1611 menu_cache_clear_all();
webmaster@1	1612 $menu = menu_router_build(TRUE);
webmaster@1	1613 _menu_navigation_links_rebuild($menu);
webmaster@1	1614 // Clear the page and block caches.
webmaster@1	1615 _menu_clear_page_cache();
webmaster@1	1616 if (defined('MAINTENANCE_MODE')) {
webmaster@1	1617 variable_set('menu_rebuild_needed', TRUE);
webmaster@1	1618 }
webmaster@1	1619 }
webmaster@1	1620
webmaster@1	1621 /**
webmaster@1	1622 * Collect, alter and store the menu definitions.
webmaster@1	1623 */
webmaster@1	1624 function menu_router_build($reset = FALSE) {
webmaster@1	1625 static $menu;
webmaster@1	1626
webmaster@1	1627 if (!isset($menu) \|\| $reset) {
webmaster@1	1628 if (!$reset && ($cache = cache_get('router:', 'cache_menu')) && isset($cache->data)) {
webmaster@1	1629 $menu = $cache->data;
webmaster@1	1630 }
webmaster@1	1631 else {
webmaster@1	1632 db_query('DELETE FROM {menu_router}');
webmaster@1	1633 // We need to manually call each module so that we can know which module
webmaster@1	1634 // a given item came from.
webmaster@1	1635 $callbacks = array();
webmaster@1	1636 foreach (module_implements('menu') as $module) {
webmaster@1	1637 $router_items = call_user_func($module .'_menu');
webmaster@1	1638 if (isset($router_items) && is_array($router_items)) {
webmaster@1	1639 foreach (array_keys($router_items) as $path) {
webmaster@1	1640 $router_items[$path]['module'] = $module;
webmaster@1	1641 }
webmaster@1	1642 $callbacks = array_merge($callbacks, $router_items);
webmaster@1	1643 }
webmaster@1	1644 }
webmaster@1	1645 // Alter the menu as defined in modules, keys are like user/%user.
webmaster@1	1646 drupal_alter('menu', $callbacks);
webmaster@1	1647 $menu = _menu_router_build($callbacks);
webmaster@1	1648 cache_set('router:', $menu, 'cache_menu');
webmaster@1	1649 }
webmaster@1	1650 }
webmaster@1	1651 return $menu;
webmaster@1	1652 }
webmaster@1	1653
webmaster@1	1654 /**
webmaster@1	1655 * Builds a link from a router item.
webmaster@1	1656 */
webmaster@1	1657 function _menu_link_build($item) {
webmaster@1	1658 if ($item['type'] == MENU_CALLBACK) {
webmaster@1	1659 $item['hidden'] = -1;
webmaster@1	1660 }
webmaster@1	1661 elseif ($item['type'] == MENU_SUGGESTED_ITEM) {
webmaster@1	1662 $item['hidden'] = 1;
webmaster@1	1663 }
webmaster@1	1664 // Note, we set this as 'system', so that we can be sure to distinguish all
webmaster@1	1665 // the menu links generated automatically from entries in {menu_router}.
webmaster@1	1666 $item['module'] = 'system';
webmaster@1	1667 $item += array(
webmaster@1	1668 'menu_name' => 'navigation',
webmaster@1	1669 'link_title' => $item['title'],
webmaster@1	1670 'link_path' => $item['path'],
webmaster@1	1671 'hidden' => 0,
webmaster@1	1672 'options' => empty($item['description']) ? array() : array('attributes' => array('title' => $item['description'])),
webmaster@1	1673 );
webmaster@1	1674 return $item;
webmaster@1	1675 }
webmaster@1	1676
webmaster@1	1677 /**
webmaster@1	1678 * Helper function to build menu links for the items in the menu router.
webmaster@1	1679 */
webmaster@1	1680 function _menu_navigation_links_rebuild($menu) {
webmaster@1	1681 // Add normal and suggested items as links.
webmaster@1	1682 $menu_links = array();
webmaster@1	1683 foreach ($menu as $path => $item) {
webmaster@1	1684 if ($item['_visible']) {
webmaster@1	1685 $item = _menu_link_build($item);
webmaster@1	1686 $menu_links[$path] = $item;
webmaster@1	1687 $sort[$path] = $item['_number_parts'];
webmaster@1	1688 }
webmaster@1	1689 }
webmaster@1	1690 if ($menu_links) {
webmaster@1	1691 // Make sure no child comes before its parent.
webmaster@1	1692 array_multisort($sort, SORT_NUMERIC, $menu_links);
webmaster@1	1693
webmaster@1	1694 foreach ($menu_links as $item) {
webmaster@1	1695 $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'", $item['link_path'], 'system'));
webmaster@1	1696 if ($existing_item) {
webmaster@1	1697 $item['mlid'] = $existing_item['mlid'];
webmaster@1	1698 $item['menu_name'] = $existing_item['menu_name'];
webmaster@1	1699 $item['plid'] = $existing_item['plid'];
webmaster@1	1700 $item['has_children'] = $existing_item['has_children'];
webmaster@1	1701 $item['updated'] = $existing_item['updated'];
webmaster@1	1702 }
webmaster@1	1703 if (!$existing_item \|\| !$existing_item['customized']) {
webmaster@1	1704 menu_link_save($item);
webmaster@1	1705 }
webmaster@1	1706 }
webmaster@1	1707 }
webmaster@1	1708 $placeholders = db_placeholders($menu, 'varchar');
webmaster@1	1709 $paths = array_keys($menu);
webmaster@3	1710 // Updated and customized items whose router paths are gone need new ones.
webmaster@1	1711 $result = db_query("SELECT ml.link_path, ml.mlid, ml.router_path, ml.updated FROM {menu_links} ml WHERE ml.updated = 1 OR (router_path NOT IN ($placeholders) AND external = 0 AND customized = 1)", $paths);
webmaster@1	1712 while ($item = db_fetch_array($result)) {
webmaster@1	1713 $router_path = _menu_find_router_path($menu, $item['link_path']);
webmaster@1	1714 if (!empty($router_path) && ($router_path != $item['router_path'] \|\| $item['updated'])) {
webmaster@1	1715 // If the router path and the link path matches, it's surely a working
webmaster@1	1716 // item, so we clear the updated flag.
webmaster@1	1717 $updated = $item['updated'] && $router_path != $item['link_path'];
webmaster@1	1718 db_query("UPDATE {menu_links} SET router_path = '%s', updated = %d WHERE mlid = %d", $router_path, $updated, $item['mlid']);
webmaster@1	1719 }
webmaster@1	1720 }
webmaster@3	1721 // Find any item whose router path does not exist any more.
webmaster@1	1722 $result = db_query("SELECT * FROM {menu_links} WHERE router_path NOT IN ($placeholders) AND external = 0 AND updated = 0 AND customized = 0 ORDER BY depth DESC", $paths);
webmaster@1	1723 // Remove all such items. Starting from those with the greatest depth will
webmaster@1	1724 // minimize the amount of re-parenting done by menu_link_delete().
webmaster@1	1725 while ($item = db_fetch_array($result)) {
webmaster@1	1726 _menu_delete_item($item, TRUE);
webmaster@1	1727 }
webmaster@1	1728 }
webmaster@1	1729
webmaster@1	1730 /**
webmaster@1	1731 * Delete one or several menu links.
webmaster@1	1732 *
webmaster@1	1733 * @param $mlid
webmaster@1	1734 * A valid menu link mlid or NULL. If NULL, $path is used.
webmaster@1	1735 * @param $path
webmaster@1	1736 * The path to the menu items to be deleted. $mlid must be NULL.
webmaster@1	1737 */
webmaster@1	1738 function menu_link_delete($mlid, $path = NULL) {
webmaster@1	1739 if (isset($mlid)) {
webmaster@1	1740 _menu_delete_item(db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $mlid)));
webmaster@1	1741 }
webmaster@1	1742 else {
webmaster@1	1743 $result = db_query("SELECT * FROM {menu_links} WHERE link_path = '%s'", $path);
webmaster@1	1744 while ($link = db_fetch_array($result)) {
webmaster@1	1745 _menu_delete_item($link);
webmaster@1	1746 }
webmaster@1	1747 }
webmaster@1	1748 }
webmaster@1	1749
webmaster@1	1750 /**
webmaster@1	1751 * Helper function for menu_link_delete; deletes a single menu link.
webmaster@1	1752 *
webmaster@1	1753 * @param $item
webmaster@1	1754 * Item to be deleted.
webmaster@1	1755 * @param $force
webmaster@1	1756 * Forces deletion. Internal use only, setting to TRUE is discouraged.
webmaster@1	1757 */
webmaster@1	1758 function _menu_delete_item($item, $force = FALSE) {
webmaster@1	1759 if ($item && ($item['module'] != 'system' \|\| $item['updated'] \|\| $force)) {
webmaster@1	1760 // Children get re-attached to the item's parent.
webmaster@1	1761 if ($item['has_children']) {
webmaster@1	1762 $result = db_query("SELECT mlid FROM {menu_links} WHERE plid = %d", $item['mlid']);
webmaster@1	1763 while ($m = db_fetch_array($result)) {
webmaster@1	1764 $child = menu_link_load($m['mlid']);
webmaster@1	1765 $child['plid'] = $item['plid'];
webmaster@1	1766 menu_link_save($child);
webmaster@1	1767 }
webmaster@1	1768 }
webmaster@1	1769 db_query('DELETE FROM {menu_links} WHERE mlid = %d', $item['mlid']);
webmaster@1	1770
webmaster@1	1771 // Update the has_children status of the parent.
webmaster@1	1772 _menu_update_parental_status($item);
webmaster@1	1773 menu_cache_clear($item['menu_name']);
webmaster@1	1774 _menu_clear_page_cache();
webmaster@1	1775 }
webmaster@1	1776 }
webmaster@1	1777
webmaster@1	1778 /**
webmaster@1	1779 * Save a menu link.
webmaster@1	1780 *
webmaster@1	1781 * @param $item
webmaster@1	1782 * An array representing a menu link item. The only mandatory keys are
webmaster@3	1783 * link_path and link_title. Possible keys are:
webmaster@3	1784 * - menu_name default is navigation
webmaster@3	1785 * - weight default is 0
webmaster@3	1786 * - expanded whether the item is expanded.
webmaster@3	1787 * - options An array of options, @see l for more.
webmaster@3	1788 * - mlid Set to an existing value, or 0 or NULL to insert a new link.
webmaster@3	1789 * - plid The mlid of the parent.
webmaster@3	1790 * - router_path The path of the relevant router item.
webmaster@1	1791 */
webmaster@1	1792 function menu_link_save(&$item) {
webmaster@1	1793 $menu = menu_router_build();
webmaster@1	1794
webmaster@1	1795 drupal_alter('menu_link', $item, $menu);
webmaster@1	1796
webmaster@1	1797 // This is the easiest way to handle the unique internal path '<front>',
webmaster@1	1798 // since a path marked as external does not need to match a router path.
webmaster@1	1799 $item['_external'] = menu_path_is_external($item['link_path']) \|\| $item['link_path'] == '<front>';
webmaster@1	1800 // Load defaults.
webmaster@1	1801 $item += array(
webmaster@1	1802 'menu_name' => 'navigation',
webmaster@1	1803 'weight' => 0,
webmaster@1	1804 'link_title' => '',
webmaster@1	1805 'hidden' => 0,
webmaster@1	1806 'has_children' => 0,
webmaster@1	1807 'expanded' => 0,
webmaster@1	1808 'options' => array(),
webmaster@1	1809 'module' => 'menu',
webmaster@1	1810 'customized' => 0,
webmaster@1	1811 'updated' => 0,
webmaster@1	1812 );
webmaster@1	1813 $existing_item = FALSE;
webmaster@1	1814 if (isset($item['mlid'])) {
webmaster@1	1815 $existing_item = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['mlid']));
webmaster@1	1816 }
webmaster@1	1817
webmaster@1	1818 if (isset($item['plid'])) {
webmaster@1	1819 $parent = db_fetch_array(db_query("SELECT * FROM {menu_links} WHERE mlid = %d", $item['plid']));
webmaster@1	1820 }
webmaster@1	1821 else {
webmaster@1	1822 // Find the parent - it must be unique.
webmaster@1	1823 $parent_path = $item['link_path'];
webmaster@1	1824 $where = "WHERE link_path = '%s'";
webmaster@1	1825 // Only links derived from router items should have module == 'system', and
webmaster@1	1826 // we want to find the parent even if it's in a different menu.
webmaster@1	1827 if ($item['module'] == 'system') {
webmaster@1	1828 $where .= " AND module = '%s'";
webmaster@1	1829 $arg2 = 'system';
webmaster@1	1830 }
webmaster@1	1831 else {
webmaster@1	1832 // If not derived from a router item, we respect the specified menu name.
webmaster@1	1833 $where .= " AND menu_name = '%s'";
webmaster@1	1834 $arg2 = $item['menu_name'];
webmaster@1	1835 }
webmaster@1	1836 do {
webmaster@1	1837 $parent = FALSE;
webmaster@1	1838 $parent_path = substr($parent_path, 0, strrpos($parent_path, '/'));
webmaster@1	1839 $result = db_query("SELECT COUNT(*) FROM {menu_links} ". $where, $parent_path, $arg2);
webmaster@1	1840 // Only valid if we get a unique result.
webmaster@1	1841 if (db_result($result) == 1) {
webmaster@1	1842 $parent = db_fetch_array(db_query("SELECT * FROM {menu_links} ". $where, $parent_path, $arg2));
webmaster@1	1843 }
webmaster@1	1844 } while ($parent === FALSE && $parent_path);
webmaster@1	1845 }
webmaster@1	1846 if ($parent !== FALSE) {
webmaster@1	1847 $item['menu_name'] = $parent['menu_name'];
webmaster@1	1848 }
webmaster@1	1849 $menu_name = $item['menu_name'];
webmaster@1	1850 // Menu callbacks need to be in the links table for breadcrumbs, but can't
webmaster@1	1851 // be parents if they are generated directly from a router item.
webmaster@1	1852 if (empty($parent['mlid']) \|\| $parent['hidden'] < 0) {
webmaster@1	1853 $item['plid'] = 0;
webmaster@1	1854 }
webmaster@1	1855 else {
webmaster@1	1856 $item['plid'] = $parent['mlid'];
webmaster@1	1857 }
webmaster@1	1858
webmaster@1	1859 if (!$existing_item) {
webmaster@1	1860 db_query("INSERT INTO {menu_links} (
webmaster@1	1861 menu_name, plid, link_path,
webmaster@1	1862 hidden, external, has_children,
webmaster@1	1863 expanded, weight,
webmaster@1	1864 module, link_title, options,
webmaster@1	1865 customized, updated) VALUES (
webmaster@1	1866 '%s', %d, '%s',
webmaster@1	1867 %d, %d, %d,
webmaster@1	1868 %d, %d,
webmaster@1	1869 '%s', '%s', '%s', %d, %d)",
webmaster@1	1870 $item['menu_name'], $item['plid'], $item['link_path'],
webmaster@1	1871 $item['hidden'], $item['_external'], $item['has_children'],
webmaster@1	1872 $item['expanded'], $item['weight'],
webmaster@1	1873 $item['module'], $item['link_title'], serialize($item['options']),
webmaster@1	1874 $item['customized'], $item['updated']);
webmaster@1	1875 $item['mlid'] = db_last_insert_id('menu_links', 'mlid');
webmaster@1	1876 }
webmaster@1	1877
webmaster@1	1878 if (!$item['plid']) {
webmaster@1	1879 $item['p1'] = $item['mlid'];
webmaster@1	1880 for ($i = 2; $i <= MENU_MAX_DEPTH; $i++) {
webmaster@1	1881 $item["p$i"] = 0;
webmaster@1	1882 }
webmaster@1	1883 $item['depth'] = 1;
webmaster@1	1884 }
webmaster@1	1885 else {
webmaster@1	1886 // Cannot add beyond the maximum depth.
webmaster@1	1887 if ($item['has_children'] && $existing_item) {
webmaster@1	1888 $limit = MENU_MAX_DEPTH - menu_link_children_relative_depth($existing_item) - 1;
webmaster@1	1889 }
webmaster@1	1890 else {
webmaster@1	1891 $limit = MENU_MAX_DEPTH - 1;
webmaster@1	1892 }
webmaster@1	1893 if ($parent['depth'] > $limit) {
webmaster@1	1894 return FALSE;
webmaster@1	1895 }
webmaster@1	1896 $item['depth'] = $parent['depth'] + 1;
webmaster@1	1897 _menu_link_parents_set($item, $parent);
webmaster@1	1898 }
webmaster@1	1899 // Need to check both plid and menu_name, since plid can be 0 in any menu.
webmaster@1	1900 if ($existing_item && ($item['plid'] != $existing_item['plid'] \|\| $menu_name != $existing_item['menu_name'])) {
webmaster@1	1901 _menu_link_move_children($item, $existing_item);
webmaster@1	1902 }
webmaster@1	1903 // Find the callback. During the menu update we store empty paths to be
webmaster@1	1904 // fixed later, so we skip this.
webmaster@1	1905 if (!isset($_SESSION['system_update_6021']) && (empty($item['router_path']) \|\| !$existing_item \|\| ($existing_item['link_path'] != $item['link_path']))) {
webmaster@1	1906 if ($item['_external']) {
webmaster@1	1907 $item['router_path'] = '';
webmaster@1	1908 }
webmaster@1	1909 else {
webmaster@1	1910 // Find the router path which will serve this path.
webmaster@1	1911 $item['parts'] = explode('/', $item['link_path'], MENU_MAX_PARTS);
webmaster@1	1912 $item['router_path'] = _menu_find_router_path($menu, $item['link_path']);
webmaster@1	1913 }
webmaster@1	1914 }
webmaster@1	1915 db_query("UPDATE {menu_links} SET menu_name = '%s', plid = %d, link_path = '%s',
webmaster@1	1916 router_path = '%s', hidden = %d, external = %d, has_children = %d,
webmaster@1	1917 expanded = %d, weight = %d, depth = %d,
webmaster@1	1918 p1 = %d, p2 = %d, p3 = %d, p4 = %d, p5 = %d, p6 = %d, p7 = %d, p8 = %d, p9 = %d,
webmaster@1	1919 module = '%s', link_title = '%s', options = '%s', customized = %d WHERE mlid = %d",
webmaster@1	1920 $item['menu_name'], $item['plid'], $item['link_path'],
webmaster@1	1921 $item['router_path'], $item['hidden'], $item['_external'], $item['has_children'],
webmaster@1	1922 $item['expanded'], $item['weight'], $item['depth'],
webmaster@1	1923 $item['p1'], $item['p2'], $item['p3'], $item['p4'], $item['p5'], $item['p6'], $item['p7'], $item['p8'], $item['p9'],
webmaster@1	1924 $item['module'], $item['link_title'], serialize($item['options']), $item['customized'], $item['mlid']);
webmaster@1	1925 // Check the has_children status of the parent.
webmaster@1	1926 _menu_update_parental_status($item);
webmaster@1	1927 menu_cache_clear($menu_name);
webmaster@1	1928 if ($existing_item && $menu_name != $existing_item['menu_name']) {
webmaster@1	1929 menu_cache_clear($existing_item['menu_name']);
webmaster@1	1930 }
webmaster@1	1931
webmaster@1	1932 _menu_clear_page_cache();
webmaster@1	1933 return $item['mlid'];
webmaster@1	1934 }
webmaster@1	1935
webmaster@1	1936 /**
webmaster@1	1937 * Helper function to clear the page and block caches at most twice per page load.
webmaster@1	1938 */
webmaster@1	1939 function _menu_clear_page_cache() {
webmaster@1	1940 static $cache_cleared = 0;
webmaster@1	1941
webmaster@1	1942 // Clear the page and block caches, but at most twice, including at
webmaster@1	1943 // the end of the page load when there are multple links saved or deleted.
webmaster@1	1944 if (empty($cache_cleared)) {
webmaster@1	1945 cache_clear_all();
webmaster@1	1946 // Keep track of which menus have expanded items.
webmaster@1	1947 _menu_set_expanded_menus();
webmaster@1	1948 $cache_cleared = 1;
webmaster@1	1949 }
webmaster@1	1950 elseif ($cache_cleared == 1) {
webmaster@1	1951 register_shutdown_function('cache_clear_all');
webmaster@1	1952 // Keep track of which menus have expanded items.
webmaster@1	1953 register_shutdown_function('_menu_set_expanded_menus');
webmaster@1	1954 $cache_cleared = 2;
webmaster@1	1955 }
webmaster@1	1956 }
webmaster@1	1957
webmaster@1	1958 /**
webmaster@1	1959 * Helper function to update a list of menus with expanded items
webmaster@1	1960 */
webmaster@1	1961 function _menu_set_expanded_menus() {
webmaster@1	1962 $names = array();
webmaster@1	1963 $result = db_query("SELECT menu_name FROM {menu_links} WHERE expanded != 0 GROUP BY menu_name");
webmaster@1	1964 while ($n = db_fetch_array($result)) {
webmaster@1	1965 $names[] = $n['menu_name'];
webmaster@1	1966 }
webmaster@1	1967 variable_set('menu_expanded', $names);
webmaster@1	1968 }
webmaster@1	1969
webmaster@1	1970 /**
webmaster@1	1971 * Find the router path which will serve this path.
webmaster@1	1972 *
webmaster@1	1973 * @param $menu
webmaster@1	1974 * The full built menu.
webmaster@1	1975 * @param $link_path
webmaster@1	1976 * The path for we are looking up its router path.
webmaster@1	1977 * @return
webmaster@1	1978 * A path from $menu keys or empty if $link_path points to a nonexisting
webmaster@1	1979 * place.
webmaster@1	1980 */
webmaster@1	1981 function _menu_find_router_path($menu, $link_path) {
webmaster@1	1982 $parts = explode('/', $link_path, MENU_MAX_PARTS);
webmaster@1	1983 $router_path = $link_path;
webmaster@1	1984 if (!isset($menu[$router_path])) {
webmaster@1	1985 list($ancestors) = menu_get_ancestors($parts);
webmaster@1	1986 $ancestors[] = '';
webmaster@1	1987 foreach ($ancestors as $key => $router_path) {
webmaster@1	1988 if (isset($menu[$router_path])) {
webmaster@1	1989 break;
webmaster@1	1990 }
webmaster@1	1991 }
webmaster@1	1992 }
webmaster@1	1993 return $router_path;
webmaster@1	1994 }
webmaster@1	1995
webmaster@1	1996 /**
webmaster@1	1997 * Insert, update or delete an uncustomized menu link related to a module.
webmaster@1	1998 *
webmaster@1	1999 * @param $module
webmaster@1	2000 * The name of the module.
webmaster@1	2001 * @param $op
webmaster@1	2002 * Operation to perform: insert, update or delete.
webmaster@1	2003 * @param $link_path
webmaster@1	2004 * The path this link points to.
webmaster@1	2005 * @param $link_title
webmaster@1	2006 * Title of the link to insert or new title to update the link to.
webmaster@1	2007 * Unused for delete.
webmaster@1	2008 * @return
webmaster@1	2009 * The insert op returns the mlid of the new item. Others op return NULL.
webmaster@1	2010 */
webmaster@1	2011 function menu_link_maintain($module, $op, $link_path, $link_title) {
webmaster@1	2012 switch ($op) {
webmaster@1	2013 case 'insert':
webmaster@1	2014 $menu_link = array(
webmaster@1	2015 'link_title' => $link_title,
webmaster@1	2016 'link_path' => $link_path,
webmaster@1	2017 'module' => $module,
webmaster@1	2018 );
webmaster@1	2019 return menu_link_save($menu_link);
webmaster@1	2020 break;
webmaster@1	2021 case 'update':
webmaster@1	2022 db_query("UPDATE {menu_links} SET link_title = '%s' WHERE link_path = '%s' AND customized = 0 AND module = '%s'", $link_title, $link_path, $module);
webmaster@1	2023 menu_cache_clear();
webmaster@1	2024 break;
webmaster@1	2025 case 'delete':
webmaster@1	2026 menu_link_delete(NULL, $link_path);
webmaster@1	2027 break;
webmaster@1	2028 }
webmaster@1	2029 }
webmaster@1	2030
webmaster@1	2031 /**
webmaster@1	2032 * Find the depth of an item's children relative to its depth.
webmaster@1	2033 *
webmaster@1	2034 * For example, if the item has a depth of 2, and the maximum of any child in
webmaster@1	2035 * the menu link tree is 5, the relative depth is 3.
webmaster@1	2036 *
webmaster@1	2037 * @param $item
webmaster@1	2038 * An array representing a menu link item.
webmaster@1	2039 * @return
webmaster@1	2040 * The relative depth, or zero.
webmaster@1	2041 *
webmaster@1	2042 */
webmaster@1	2043 function menu_link_children_relative_depth($item) {
webmaster@1	2044 $i = 1;
webmaster@1	2045 $match = '';
webmaster@1	2046 $args[] = $item['menu_name'];
webmaster@1	2047 $p = 'p1';
webmaster@1	2048 while ($i <= MENU_MAX_DEPTH && $item[$p]) {
webmaster@1	2049 $match .= " AND $p = %d";
webmaster@1	2050 $args[] = $item[$p];
webmaster@1	2051 $p = 'p'. ++$i;
webmaster@1	2052 }
webmaster@1	2053
webmaster@1	2054 $max_depth = db_result(db_query_range("SELECT depth FROM {menu_links} WHERE menu_name = '%s'". $match ." ORDER BY depth DESC", $args, 0, 1));
webmaster@1	2055
webmaster@1	2056 return ($max_depth > $item['depth']) ? $max_depth - $item['depth'] : 0;
webmaster@1	2057 }
webmaster@1	2058
webmaster@1	2059 /**
webmaster@1	2060 * Update the children of a menu link that's being moved.
webmaster@1	2061 *
webmaster@1	2062 * The menu name, parents (p1 - p6), and depth are updated for all children of
webmaster@1	2063 * the link, and the has_children status of the previous parent is updated.
webmaster@1	2064 */
webmaster@1	2065 function _menu_link_move_children($item, $existing_item) {
webmaster@1	2066
webmaster@1	2067 $args[] = $item['menu_name'];
webmaster@1	2068 $set[] = "menu_name = '%s'";
webmaster@1	2069
webmaster@1	2070 $i = 1;
webmaster@1	2071 while ($i <= $item['depth']) {
webmaster@1	2072 $p = 'p'. $i++;
webmaster@1	2073 $set[] = "$p = %d";
webmaster@1	2074 $args[] = $item[$p];
webmaster@1	2075 }
webmaster@1	2076 $j = $existing_item['depth'] + 1;
webmaster@1	2077 while ($i <= MENU_MAX_DEPTH && $j <= MENU_MAX_DEPTH) {
webmaster@1	2078 $set[] = 'p'. $i++ .' = p'. $j++;
webmaster@1	2079 }
webmaster@1	2080 while ($i <= MENU_MAX_DEPTH) {
webmaster@1	2081 $set[] = 'p'. $i++ .' = 0';
webmaster@1	2082 }
webmaster@1	2083
webmaster@1	2084 $shift = $item['depth'] - $existing_item['depth'];
webmaster@1	2085 if ($shift < 0) {
webmaster@1	2086 $args[] = -$shift;
webmaster@1	2087 $set[] = 'depth = depth - %d';
webmaster@1	2088 }
webmaster@1	2089 elseif ($shift > 0) {
webmaster@1	2090 // The order of $set must be reversed so the new values don't overwrite the
webmaster@1	2091 // old ones before they can be used because "Single-table UPDATE
webmaster@1	2092 // assignments are generally evaluated from left to right"
webmaster@1	2093 // see: http://dev.mysql.com/doc/refman/5.0/en/update.html
webmaster@1	2094 $set = array_reverse($set);
webmaster@1	2095 $args = array_reverse($args);
webmaster@1	2096
webmaster@1	2097 $args[] = $shift;
webmaster@1	2098 $set[] = 'depth = depth + %d';
webmaster@1	2099 }
webmaster@1	2100 $where[] = "menu_name = '%s'";
webmaster@1	2101 $args[] = $existing_item['menu_name'];
webmaster@1	2102 $p = 'p1';
webmaster@1	2103 for ($i = 1; $i <= MENU_MAX_DEPTH && $existing_item[$p]; $p = 'p'. ++$i) {
webmaster@1	2104 $where[] = "$p = %d";
webmaster@1	2105 $args[] = $existing_item[$p];
webmaster@1	2106 }
webmaster@1	2107
webmaster@1	2108 db_query("UPDATE {menu_links} SET ". implode(', ', $set) ." WHERE ". implode(' AND ', $where), $args);
webmaster@1	2109 // Check the has_children status of the parent, while excluding this item.
webmaster@1	2110 _menu_update_parental_status($existing_item, TRUE);
webmaster@1	2111 }
webmaster@1	2112
webmaster@1	2113 /**
webmaster@1	2114 * Check and update the has_children status for the parent of a link.
webmaster@1	2115 */
webmaster@1	2116 function _menu_update_parental_status($item, $exclude = FALSE) {
webmaster@1	2117 // If plid == 0, there is nothing to update.
webmaster@1	2118 if ($item['plid']) {
webmaster@1	2119 // We may want to exclude the passed link as a possible child.
webmaster@1	2120 $where = $exclude ? " AND mlid != %d" : '';
webmaster@1	2121 // Check if at least one visible child exists in the table.
webmaster@1	2122 $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));
webmaster@1	2123 db_query("UPDATE {menu_links} SET has_children = %d WHERE mlid = %d", $parent_has_children, $item['plid']);
webmaster@1	2124 }
webmaster@1	2125 }
webmaster@1	2126
webmaster@1	2127 /**
webmaster@1	2128 * Helper function that sets the p1..p9 values for a menu link being saved.
webmaster@1	2129 */
webmaster@1	2130 function _menu_link_parents_set(&$item, $parent) {
webmaster@1	2131 $i = 1;
webmaster@1	2132 while ($i < $item['depth']) {
webmaster@1	2133 $p = 'p'. $i++;
webmaster@1	2134 $item[$p] = $parent[$p];
webmaster@1	2135 }
webmaster@1	2136 $p = 'p'. $i++;
webmaster@1	2137 // The parent (p1 - p9) corresponding to the depth always equals the mlid.
webmaster@1	2138 $item[$p] = $item['mlid'];
webmaster@1	2139 while ($i <= MENU_MAX_DEPTH) {
webmaster@1	2140 $p = 'p'. $i++;
webmaster@1	2141 $item[$p] = 0;
webmaster@1	2142 }
webmaster@1	2143 }
webmaster@1	2144
webmaster@1	2145 /**
webmaster@1	2146 * Helper function to build the router table based on the data from hook_menu.
webmaster@1	2147 */
webmaster@1	2148 function _menu_router_build($callbacks) {
webmaster@1	2149 // First pass: separate callbacks from paths, making paths ready for
webmaster@1	2150 // matching. Calculate fitness, and fill some default values.
webmaster@1	2151 $menu = array();
webmaster@1	2152 foreach ($callbacks as $path => $item) {
webmaster@1	2153 $load_functions = array();
webmaster@1	2154 $to_arg_functions = array();
webmaster@1	2155 $fit = 0;
webmaster@1	2156 $move = FALSE;
webmaster@1	2157
webmaster@1	2158 $parts = explode('/', $path, MENU_MAX_PARTS);
webmaster@1	2159 $number_parts = count($parts);
webmaster@1	2160 // We store the highest index of parts here to save some work in the fit
webmaster@1	2161 // calculation loop.
webmaster@1	2162 $slashes = $number_parts - 1;
webmaster@1	2163 // Extract load and to_arg functions.
webmaster@1	2164 foreach ($parts as $k => $part) {
webmaster@1	2165 $match = FALSE;
webmaster@1	2166 if (preg_match('/^%([a-z_]*)$/', $part, $matches)) {
webmaster@1	2167 if (empty($matches[1])) {
webmaster@1	2168 $match = TRUE;
webmaster@1	2169 $load_functions[$k] = NULL;
webmaster@1	2170 }
webmaster@1	2171 else {
webmaster@1	2172 if (function_exists($matches[1] .'_to_arg')) {
webmaster@1	2173 $to_arg_functions[$k] = $matches[1] .'_to_arg';
webmaster@1	2174 $load_functions[$k] = NULL;
webmaster@1	2175 $match = TRUE;
webmaster@1	2176 }
webmaster@1	2177 if (function_exists($matches[1] .'_load')) {
webmaster@1	2178 $function = $matches[1] .'_load';
webmaster@1	2179 // Create an array of arguments that will be passed to the _load
webmaster@1	2180 // function when this menu path is checked, if 'load arguments'
webmaster@1	2181 // exists.
webmaster@1	2182 $load_functions[$k] = isset($item['load arguments']) ? array($function => $item['load arguments']) : $function;
webmaster@1	2183 $match = TRUE;
webmaster@1	2184 }
webmaster@1	2185 }
webmaster@1	2186 }
webmaster@1	2187 if ($match) {
webmaster@1	2188 $parts[$k] = '%';
webmaster@1	2189 }
webmaster@1	2190 else {
webmaster@1	2191 $fit \|= 1 << ($slashes - $k);
webmaster@1	2192 }
webmaster@1	2193 }
webmaster@1	2194 if ($fit) {
webmaster@1	2195 $move = TRUE;
webmaster@1	2196 }
webmaster@1	2197 else {
webmaster@1	2198 // If there is no %, it fits maximally.
webmaster@1	2199 $fit = (1 << $number_parts) - 1;
webmaster@1	2200 }
webmaster@1	2201 $masks[$fit] = 1;
webmaster@1	2202 $item['load_functions'] = empty($load_functions) ? '' : serialize($load_functions);
webmaster@1	2203 $item['to_arg_functions'] = empty($to_arg_functions) ? '' : serialize($to_arg_functions);
webmaster@1	2204 $item += array(
webmaster@1	2205 'title' => '',
webmaster@1	2206 'weight' => 0,
webmaster@1	2207 'type' => MENU_NORMAL_ITEM,
webmaster@1	2208 '_number_parts' => $number_parts,
webmaster@1	2209 '_parts' => $parts,
webmaster@1	2210 '_fit' => $fit,
webmaster@1	2211 );
webmaster@1	2212 $item += array(
webmaster@1	2213 '_visible' => (bool)($item['type'] & MENU_VISIBLE_IN_BREADCRUMB),
webmaster@1	2214 '_tab' => (bool)($item['type'] & MENU_IS_LOCAL_TASK),
webmaster@1	2215 );
webmaster@1	2216 if ($move) {
webmaster@1	2217 $new_path = implode('/', $item['_parts']);
webmaster@1	2218 $menu[$new_path] = $item;
webmaster@1	2219 $sort[$new_path] = $number_parts;
webmaster@1	2220 }
webmaster@1	2221 else {
webmaster@1	2222 $menu[$path] = $item;
webmaster@1	2223 $sort[$path] = $number_parts;
webmaster@1	2224 }
webmaster@1	2225 }
webmaster@1	2226 array_multisort($sort, SORT_NUMERIC, $menu);
webmaster@1	2227
webmaster@1	2228 // Apply inheritance rules.
webmaster@1	2229 foreach ($menu as $path => $v) {
webmaster@1	2230 $item = &$menu[$path];
webmaster@1	2231 if (!$item['_tab']) {
webmaster@1	2232 // Non-tab items.
webmaster@1	2233 $item['tab_parent'] = '';
webmaster@1	2234 $item['tab_root'] = $path;
webmaster@1	2235 }
webmaster@1	2236 for ($i = $item['_number_parts'] - 1; $i; $i--) {
webmaster@1	2237 $parent_path = implode('/', array_slice($item['_parts'], 0, $i));
webmaster@1	2238 if (isset($menu[$parent_path])) {
webmaster@1	2239
webmaster@1	2240 $parent = $menu[$parent_path];
webmaster@1	2241
webmaster@1	2242 if (!isset($item['tab_parent'])) {
webmaster@1	2243 // Parent stores the parent of the path.
webmaster@1	2244 $item['tab_parent'] = $parent_path;
webmaster@1	2245 }
webmaster@1	2246 if (!isset($item['tab_root']) && !$parent['_tab']) {
webmaster@1	2247 $item['tab_root'] = $parent_path;
webmaster@1	2248 }
webmaster@1	2249 // If a callback is not found, we try to find the first parent that
webmaster@1	2250 // has a callback.
webmaster@1	2251 if (!isset($item['access callback']) && isset($parent['access callback'])) {
webmaster@1	2252 $item['access callback'] = $parent['access callback'];
webmaster@1	2253 if (!isset($item['access arguments']) && isset($parent['access arguments'])) {
webmaster@1	2254 $item['access arguments'] = $parent['access arguments'];
webmaster@1	2255 }
webmaster@1	2256 }
webmaster@1	2257 // Same for page callbacks.
webmaster@1	2258 if (!isset($item['page callback']) && isset($parent['page callback'])) {
webmaster@1	2259 $item['page callback'] = $parent['page callback'];
webmaster@1	2260 if (!isset($item['page arguments']) && isset($parent['page arguments'])) {
webmaster@1	2261 $item['page arguments'] = $parent['page arguments'];
webmaster@1	2262 }
webmaster@1	2263 if (!isset($item['file']) && isset($parent['file'])) {
webmaster@1	2264 $item['file'] = $parent['file'];
webmaster@1	2265 }
webmaster@1	2266 if (!isset($item['file path']) && isset($parent['file path'])) {
webmaster@1	2267 $item['file path'] = $parent['file path'];
webmaster@1	2268 }
webmaster@1	2269 }
webmaster@1	2270 }
webmaster@1	2271 }
webmaster@1	2272 if (!isset($item['access callback']) && isset($item['access arguments'])) {
webmaster@1	2273 // Default callback.
webmaster@1	2274 $item['access callback'] = 'user_access';
webmaster@1	2275 }
webmaster@1	2276 if (!isset($item['access callback']) \|\| empty($item['page callback'])) {
webmaster@1	2277 $item['access callback'] = 0;
webmaster@1	2278 }
webmaster@1	2279 if (is_bool($item['access callback'])) {
webmaster@1	2280 $item['access callback'] = intval($item['access callback']);
webmaster@1	2281 }
webmaster@1	2282
webmaster@1	2283 $item += array(
webmaster@1	2284 'access arguments' => array(),
webmaster@1	2285 'access callback' => '',
webmaster@1	2286 'page arguments' => array(),
webmaster@1	2287 'page callback' => '',
webmaster@1	2288 'block callback' => '',
webmaster@1	2289 'title arguments' => array(),
webmaster@1	2290 'title callback' => 't',
webmaster@1	2291 'description' => '',
webmaster@1	2292 'position' => '',
webmaster@1	2293 'tab_parent' => '',
webmaster@1	2294 'tab_root' => $path,
webmaster@1	2295 'path' => $path,
webmaster@1	2296 'file' => '',
webmaster@1	2297 'file path' => '',
webmaster@1	2298 'include file' => '',
webmaster@1	2299 );
webmaster@1	2300
webmaster@1	2301 // Calculate out the file to be included for each callback, if any.
webmaster@1	2302 if ($item['file']) {
webmaster@1	2303 $file_path = $item['file path'] ? $item['file path'] : drupal_get_path('module', $item['module']);
webmaster@1	2304 $item['include file'] = $file_path .'/'. $item['file'];
webmaster@1	2305 }
webmaster@1	2306
webmaster@1	2307 $title_arguments = $item['title arguments'] ? serialize($item['title arguments']) : '';
webmaster@1	2308 db_query("INSERT INTO {menu_router}
webmaster@1	2309 (path, load_functions, to_arg_functions, access_callback,
webmaster@1	2310 access_arguments, page_callback, page_arguments, fit,
webmaster@1	2311 number_parts, tab_parent, tab_root,
webmaster@1	2312 title, title_callback, title_arguments,
webmaster@1	2313 type, block_callback, description, position, weight, file)
webmaster@1	2314 VALUES ('%s', '%s', '%s', '%s',
webmaster@1	2315 '%s', '%s', '%s', %d,
webmaster@1	2316 %d, '%s', '%s',
webmaster@1	2317 '%s', '%s', '%s',
webmaster@1	2318 %d, '%s', '%s', '%s', %d, '%s')",
webmaster@1	2319 $path, $item['load_functions'], $item['to_arg_functions'], $item['access callback'],
webmaster@1	2320 serialize($item['access arguments']), $item['page callback'], serialize($item['page arguments']), $item['_fit'],
webmaster@1	2321 $item['_number_parts'], $item['tab_parent'], $item['tab_root'],
webmaster@1	2322 $item['title'], $item['title callback'], $title_arguments,
webmaster@1	2323 $item['type'], $item['block callback'], $item['description'], $item['position'], $item['weight'], $item['include file']);
webmaster@1	2324 }
webmaster@1	2325 // Sort the masks so they are in order of descending fit, and store them.
webmaster@1	2326 $masks = array_keys($masks);
webmaster@1	2327 rsort($masks);
webmaster@1	2328 variable_set('menu_masks', $masks);
webmaster@1	2329 return $menu;
webmaster@1	2330 }
webmaster@1	2331
webmaster@1	2332 /**
webmaster@1	2333 * Returns TRUE if a path is external (e.g. http://example.com).
webmaster@1	2334 */
webmaster@1	2335 function menu_path_is_external($path) {
webmaster@1	2336 $colonpos = strpos($path, ':');
webmaster@1	2337 return $colonpos !== FALSE && !preg_match('![/?#]!', substr($path, 0, $colonpos)) && filter_xss_bad_protocol($path, FALSE) == check_plain($path);
webmaster@1	2338 }
webmaster@1	2339
webmaster@1	2340 /**
webmaster@1	2341 * Checks whether the site is off-line for maintenance.
webmaster@1	2342 *
webmaster@1	2343 * This function will log the current user out and redirect to front page
webmaster@1	2344 * if the current user has no 'administer site configuration' permission.
webmaster@1	2345 *
webmaster@1	2346 * @return
webmaster@1	2347 * FALSE if the site is not off-line or its the login page or the user has
webmaster@1	2348 * 'administer site configuration' permission.
webmaster@1	2349 * TRUE for anonymous users not on the login page if the site is off-line.
webmaster@1	2350 */
webmaster@1	2351 function _menu_site_is_offline() {
webmaster@1	2352 // Check if site is set to off-line mode.
webmaster@1	2353 if (variable_get('site_offline', 0)) {
webmaster@1	2354 // Check if the user has administration privileges.
webmaster@1	2355 if (user_access('administer site configuration')) {
webmaster@1	2356 // Ensure that the off-line message is displayed only once [allowing for
webmaster@1	2357 // page redirects], and specifically suppress its display on the site
webmaster@1	2358 // maintenance page.
webmaster@1	2359 if (drupal_get_normal_path($_GET['q']) != 'admin/settings/site-maintenance') {
webmaster@1	2360 drupal_set_message(t('Operating in off-line mode.'), 'status', FALSE);
webmaster@1	2361 }
webmaster@1	2362 }
webmaster@1	2363 else {
webmaster@1	2364 // Anonymous users get a FALSE at the login prompt, TRUE otherwise.
webmaster@1	2365 if (user_is_anonymous()) {
webmaster@1	2366 return $_GET['q'] != 'user' && $_GET['q'] != 'user/login';
webmaster@1	2367 }
webmaster@1	2368 // Logged in users are unprivileged here, so they are logged out.
webmaster@1	2369 require_once drupal_get_path('module', 'user') .'/user.pages.inc';
webmaster@1	2370 user_logout();
webmaster@1	2371 }
webmaster@1	2372 }
webmaster@1	2373 return FALSE;
webmaster@1	2374 }
webmaster@1	2375
webmaster@1	2376 /**
webmaster@1	2377 * Validates the path of a menu link being created or edited.
webmaster@1	2378 *
webmaster@1	2379 * @return
webmaster@1	2380 * TRUE if it is a valid path AND the current user has access permission,
webmaster@1	2381 * FALSE otherwise.
webmaster@1	2382 */
webmaster@1	2383 function menu_valid_path($form_item) {
webmaster@1	2384 global $menu_admin;
webmaster@1	2385 $item = array();
webmaster@1	2386 $path = $form_item['link_path'];
webmaster@1	2387 // We indicate that a menu administrator is running the menu access check.
webmaster@1	2388 $menu_admin = TRUE;
webmaster@1	2389 if ($path == '<front>' \|\| menu_path_is_external($path)) {
webmaster@1	2390 $item = array('access' => TRUE);
webmaster@1	2391 }
webmaster@1	2392 elseif (preg_match('/\/\%/', $path)) {
webmaster@1	2393 // Path is dynamic (ie 'user/%'), so check directly against menu_router table.
webmaster@1	2394 if ($item = db_fetch_array(db_query("SELECT * FROM {menu_router} where path = '%s' ", $path))) {
webmaster@1	2395 $item['link_path'] = $form_item['link_path'];
webmaster@1	2396 $item['link_title'] = $form_item['link_title'];
webmaster@1	2397 $item['external'] = FALSE;
webmaster@1	2398 $item['options'] = '';
webmaster@1	2399 _menu_link_translate($item);
webmaster@1	2400 }
webmaster@1	2401 }
webmaster@1	2402 else {
webmaster@1	2403 $item = menu_get_item($path);
webmaster@1	2404 }
webmaster@1	2405 $menu_admin = FALSE;
webmaster@1	2406 return $item && $item['access'];
webmaster@1	2407 }
webmaster@1	2408
webmaster@1	2409 /**
webmaster@1	2410 * @} End of "defgroup menu".
webmaster@1	2411 */

Mercurial > defr > drupal > core

annotate includes/menu.inc @ 3:165d43f946a8 6.1