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1 <?php 2 /** 3 * Navigation Menu template functions 4 * 5 * @package WordPress 6 * @subpackage Nav_Menus 7 * @since 3.0.0 8 */ 9 10 /** 11 * Create HTML list of nav menu items. 12 * 13 * @package WordPress 14 * @since 3.0.0 15 * @uses Walker 16 */ 17 class Walker_Nav_Menu extends Walker { 18 /** 19 * What the class handles. 20 * 21 * @see Walker::$tree_type 22 * @since 3.0.0 23 * @var string 24 */ 25 var $tree_type = array( 'post_type', 'taxonomy', 'custom' ); 26 27 /** 28 * Database fields to use. 29 * 30 * @see Walker::$db_fields 31 * @since 3.0.0 32 * @todo Decouple this. 33 * @var array 34 */ 35 var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' ); 36 37 /** 38 * Starts the list before the elements are added. 39 * 40 * @see Walker::start_lvl() 41 * 42 * @since 3.0.0 43 * 44 * @param string $output Passed by reference. Used to append additional content. 45 * @param int $depth Depth of menu item. Used for padding. 46 * @param array $args An array of arguments. @see wp_nav_menu() 47 */ 48 function start_lvl( &$output, $depth = 0, $args = array() ) { 49 $indent = str_repeat("\t", $depth); 50 $output .= "\n$indent<ul class=\"sub-menu\">\n"; 51 } 52 53 /** 54 * Ends the list of after the elements are added. 55 * 56 * @see Walker::end_lvl() 57 * 58 * @since 3.0.0 59 * 60 * @param string $output Passed by reference. Used to append additional content. 61 * @param int $depth Depth of menu item. Used for padding. 62 * @param array $args An array of arguments. @see wp_nav_menu() 63 */ 64 function end_lvl( &$output, $depth = 0, $args = array() ) { 65 $indent = str_repeat("\t", $depth); 66 $output .= "$indent</ul>\n"; 67 } 68 69 /** 70 * Start the element output. 71 * 72 * @see Walker::start_el() 73 * 74 * @since 3.0.0 75 * 76 * @param string $output Passed by reference. Used to append additional content. 77 * @param object $item Menu item data object. 78 * @param int $depth Depth of menu item. Used for padding. 79 * @param array $args An array of arguments. @see wp_nav_menu() 80 * @param int $id Current item ID. 81 */ 82 function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) { 83 $indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; 84 85 $class_names = $value = ''; 86 87 $classes = empty( $item->classes ) ? array() : (array) $item->classes; 88 $classes[] = 'menu-item-' . $item->ID; 89 90 /** 91 * Filter the CSS class(es) applied to a menu item's <li>. 92 * 93 * @since 3.0.0 94 * 95 * @param array $classes The CSS classes that are applied to the menu item's <li>. 96 * @param object $item The current menu item. 97 * @param array $args An array of arguments. @see wp_nav_menu() 98 */ 99 $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) ); 100 $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : ''; 101 102 /** 103 * Filter the ID applied to a menu item's <li>. 104 * 105 * @since 3.0.1 106 * 107 * @param string The ID that is applied to the menu item's <li>. 108 * @param object $item The current menu item. 109 * @param array $args An array of arguments. @see wp_nav_menu() 110 */ 111 $id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args ); 112 $id = $id ? ' id="' . esc_attr( $id ) . '"' : ''; 113 114 $output .= $indent . '<li' . $id . $value . $class_names .'>'; 115 116 $atts = array(); 117 $atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : ''; 118 $atts['target'] = ! empty( $item->target ) ? $item->target : ''; 119 $atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : ''; 120 $atts['href'] = ! empty( $item->url ) ? $item->url : ''; 121 122 /** 123 * Filter the HTML attributes applied to a menu item's <a>. 124 * 125 * @since 3.6.0 126 * 127 * @param array $atts { 128 * The HTML attributes applied to the menu item's <a>, empty strings are ignored. 129 * 130 * @type string $title The title attribute. 131 * @type string $target The target attribute. 132 * @type string $rel The rel attribute. 133 * @type string $href The href attribute. 134 * } 135 * @param object $item The current menu item. 136 * @param array $args An array of arguments. @see wp_nav_menu() 137 */ 138 $atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args ); 139 140 $attributes = ''; 141 foreach ( $atts as $attr => $value ) { 142 if ( ! empty( $value ) ) { 143 $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); 144 $attributes .= ' ' . $attr . '="' . $value . '"'; 145 } 146 } 147 148 $item_output = $args->before; 149 $item_output .= '<a'. $attributes .'>'; 150 /** This filter is documented in wp-includes/post-template.php */ 151 $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; 152 $item_output .= '</a>'; 153 $item_output .= $args->after; 154 155 /** 156 * Filter a menu item's starting output. 157 * 158 * The menu item's starting output only includes $args->before, the opening <a>, 159 * the menu item's title, the closing </a>, and $args->after. Currently, there is 160 * no filter for modifying the opening and closing <li> for a menu item. 161 * 162 * @since 3.0.0 163 * 164 * @param string $item_output The menu item's starting HTML output. 165 * @param object $item Menu item data object. 166 * @param int $depth Depth of menu item. Used for padding. 167 * @param array $args An array of arguments. @see wp_nav_menu() 168 */ 169 $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); 170 } 171 172 /** 173 * Ends the element output, if needed. 174 * 175 * @see Walker::end_el() 176 * 177 * @since 3.0.0 178 * 179 * @param string $output Passed by reference. Used to append additional content. 180 * @param object $item Page data object. Not used. 181 * @param int $depth Depth of page. Not Used. 182 * @param array $args An array of arguments. @see wp_nav_menu() 183 */ 184 function end_el( &$output, $item, $depth = 0, $args = array() ) { 185 $output .= "</li>\n"; 186 } 187 188 } // Walker_Nav_Menu 189 190 /** 191 * Displays a navigation menu. 192 * 193 * Optional $args contents: 194 * 195 * menu - The menu that is desired. Accepts (matching in order) id, slug, name. Defaults to blank. 196 * menu_class - CSS class to use for the ul element which forms the menu. Defaults to 'menu'. 197 * menu_id - The ID that is applied to the ul element which forms the menu. Defaults to the menu slug, incremented. 198 * container - Whether to wrap the ul, and what to wrap it with. Defaults to 'div'. 199 * container_class - the class that is applied to the container. Defaults to 'menu-{menu slug}-container'. 200 * container_id - The ID that is applied to the container. Defaults to blank. 201 * fallback_cb - If the menu doesn't exists, a callback function will fire. Defaults to 'wp_page_menu'. Set to false for no fallback. 202 * before - Text before the link text. 203 * after - Text after the link text. 204 * link_before - Text before the link. 205 * link_after - Text after the link. 206 * echo - Whether to echo the menu or return it. Defaults to echo. 207 * depth - how many levels of the hierarchy are to be included. 0 means all. Defaults to 0. 208 * walker - allows a custom walker to be specified. 209 * theme_location - the location in the theme to be used. Must be registered with register_nav_menu() in order to be selectable by the user. 210 * items_wrap - How the list items should be wrapped. Defaults to a ul with an id and class. Uses printf() format with numbered placeholders. 211 * 212 * @since 3.0.0 213 * 214 * @param array $args Arguments 215 */ 216 function wp_nav_menu( $args = array() ) { 217 static $menu_id_slugs = array(); 218 219 $defaults = array( 'menu' => '', 'container' => 'div', 'container_class' => '', 'container_id' => '', 'menu_class' => 'menu', 'menu_id' => '', 220 'echo' => true, 'fallback_cb' => 'wp_page_menu', 'before' => '', 'after' => '', 'link_before' => '', 'link_after' => '', 'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>', 221 'depth' => 0, 'walker' => '', 'theme_location' => '' ); 222 223 $args = wp_parse_args( $args, $defaults ); 224 /** 225 * Filter the arguments used to display a navigation menu. 226 * 227 * @since 3.0.0 228 * 229 * @param array $args Arguments from {@see wp_nav_menu()}. 230 */ 231 $args = apply_filters( 'wp_nav_menu_args', $args ); 232 $args = (object) $args; 233 234 // Get the nav menu based on the requested menu 235 $menu = wp_get_nav_menu_object( $args->menu ); 236 237 // Get the nav menu based on the theme_location 238 if ( ! $menu && $args->theme_location && ( $locations = get_nav_menu_locations() ) && isset( $locations[ $args->theme_location ] ) ) 239 $menu = wp_get_nav_menu_object( $locations[ $args->theme_location ] ); 240 241 // get the first menu that has items if we still can't find a menu 242 if ( ! $menu && !$args->theme_location ) { 243 $menus = wp_get_nav_menus(); 244 foreach ( $menus as $menu_maybe ) { 245 if ( $menu_items = wp_get_nav_menu_items( $menu_maybe->term_id, array( 'update_post_term_cache' => false ) ) ) { 246 $menu = $menu_maybe; 247 break; 248 } 249 } 250 } 251 252 // If the menu exists, get its items. 253 if ( $menu && ! is_wp_error($menu) && !isset($menu_items) ) 254 $menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) ); 255 256 /* 257 * If no menu was found: 258 * - Fall back (if one was specified), or bail. 259 * 260 * If no menu items were found: 261 * - Fall back, but only if no theme location was specified. 262 * - Otherwise, bail. 263 */ 264 if ( ( !$menu || is_wp_error($menu) || ( isset($menu_items) && empty($menu_items) && !$args->theme_location ) ) 265 && $args->fallback_cb && is_callable( $args->fallback_cb ) ) 266 return call_user_func( $args->fallback_cb, (array) $args ); 267 268 if ( ! $menu || is_wp_error( $menu ) ) 269 return false; 270 271 $nav_menu = $items = ''; 272 273 $show_container = false; 274 if ( $args->container ) { 275 /** 276 * Filter the list of HTML tags that are valid for use as menu containers. 277 * 278 * @since 3.0.0 279 * 280 * @param array The acceptable HTML tags for use as menu containers, defaults as 'div' and 'nav'. 281 */ 282 $allowed_tags = apply_filters( 'wp_nav_menu_container_allowedtags', array( 'div', 'nav' ) ); 283 if ( in_array( $args->container, $allowed_tags ) ) { 284 $show_container = true; 285 $class = $args->container_class ? ' class="' . esc_attr( $args->container_class ) . '"' : ' class="menu-'. $menu->slug .'-container"'; 286 $id = $args->container_id ? ' id="' . esc_attr( $args->container_id ) . '"' : ''; 287 $nav_menu .= '<'. $args->container . $id . $class . '>'; 288 } 289 } 290 291 // Set up the $menu_item variables 292 _wp_menu_item_classes_by_context( $menu_items ); 293 294 $sorted_menu_items = $menu_items_with_children = array(); 295 foreach ( (array) $menu_items as $menu_item ) { 296 $sorted_menu_items[ $menu_item->menu_order ] = $menu_item; 297 if ( $menu_item->menu_item_parent ) 298 $menu_items_with_children[ $menu_item->menu_item_parent ] = true; 299 } 300 301 // Add the menu-item-has-children class where applicable 302 if ( $menu_items_with_children ) { 303 foreach ( $sorted_menu_items as &$menu_item ) { 304 if ( isset( $menu_items_with_children[ $menu_item->ID ] ) ) 305 $menu_item->classes[] = 'menu-item-has-children'; 306 } 307 } 308 309 unset( $menu_items, $menu_item ); 310 311 /** 312 * Filter the sorted list of menu item objects before generating the menu's HTML. 313 * 314 * @since 3.1.0 315 * 316 * @param array $sorted_menu_items The menu items, sorted by each menu item's menu order. 317 */ 318 $sorted_menu_items = apply_filters( 'wp_nav_menu_objects', $sorted_menu_items, $args ); 319 320 $items .= walk_nav_menu_tree( $sorted_menu_items, $args->depth, $args ); 321 unset($sorted_menu_items); 322 323 // Attributes 324 if ( ! empty( $args->menu_id ) ) { 325 $wrap_id = $args->menu_id; 326 } else { 327 $wrap_id = 'menu-' . $menu->slug; 328 while ( in_array( $wrap_id, $menu_id_slugs ) ) { 329 if ( preg_match( '#-(\d+)$#', $wrap_id, $matches ) ) 330 $wrap_id = preg_replace('#-(\d+)$#', '-' . ++$matches[1], $wrap_id ); 331 else 332 $wrap_id = $wrap_id . '-1'; 333 } 334 } 335 $menu_id_slugs[] = $wrap_id; 336 337 $wrap_class = $args->menu_class ? $args->menu_class : ''; 338 339 /** 340 * Filter the HTML list content for navigation menus. 341 * 342 * @since 3.0.0 343 * 344 * @param string $items The HTML list content for the menu items. 345 * @param array $args Arguments from {@see wp_nav_menu()}. 346 */ 347 $items = apply_filters( 'wp_nav_menu_items', $items, $args ); 348 /** 349 * Filter the HTML list content for a specific navigation menu. 350 * 351 * @since 3.0.0 352 * 353 * @param string $items The HTML list content for the menu items. 354 * @param array $args Arguments from {@see wp_nav_menu()}. 355 */ 356 $items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args ); 357 358 // Don't print any markup if there are no items at this point. 359 if ( empty( $items ) ) 360 return false; 361 362 $nav_menu .= sprintf( $args->items_wrap, esc_attr( $wrap_id ), esc_attr( $wrap_class ), $items ); 363 unset( $items ); 364 365 if ( $show_container ) 366 $nav_menu .= '</' . $args->container . '>'; 367 368 /** 369 * Filter the HTML content for navigation menus. 370 * 371 * @since 3.0.0 372 * 373 * @param string $nav_menu The HTML content for the navigation menu. 374 * @param array $args Arguments from {@see wp_nav_menu()}. 375 */ 376 $nav_menu = apply_filters( 'wp_nav_menu', $nav_menu, $args ); 377 378 if ( $args->echo ) 379 echo $nav_menu; 380 else 381 return $nav_menu; 382 } 383 384 /** 385 * Add the class property classes for the current context, if applicable. 386 * 387 * @access private 388 * @since 3.0 389 * 390 * @param array $menu_items The current menu item objects to which to add the class property information. 391 */ 392 function _wp_menu_item_classes_by_context( &$menu_items ) { 393 global $wp_query, $wp_rewrite; 394 395 $queried_object = $wp_query->get_queried_object(); 396 $queried_object_id = (int) $wp_query->queried_object_id; 397 398 $active_object = ''; 399 $active_ancestor_item_ids = array(); 400 $active_parent_item_ids = array(); 401 $active_parent_object_ids = array(); 402 $possible_taxonomy_ancestors = array(); 403 $possible_object_parents = array(); 404 $home_page_id = (int) get_option( 'page_for_posts' ); 405 406 if ( $wp_query->is_singular && ! empty( $queried_object->post_type ) && ! is_post_type_hierarchical( $queried_object->post_type ) ) { 407 foreach ( (array) get_object_taxonomies( $queried_object->post_type ) as $taxonomy ) { 408 if ( is_taxonomy_hierarchical( $taxonomy ) ) { 409 $term_hierarchy = _get_term_hierarchy( $taxonomy ); 410 $terms = wp_get_object_terms( $queried_object_id, $taxonomy, array( 'fields' => 'ids' ) ); 411 if ( is_array( $terms ) ) { 412 $possible_object_parents = array_merge( $possible_object_parents, $terms ); 413 $term_to_ancestor = array(); 414 foreach ( (array) $term_hierarchy as $anc => $descs ) { 415 foreach ( (array) $descs as $desc ) 416 $term_to_ancestor[ $desc ] = $anc; 417 } 418 419 foreach ( $terms as $desc ) { 420 do { 421 $possible_taxonomy_ancestors[ $taxonomy ][] = $desc; 422 if ( isset( $term_to_ancestor[ $desc ] ) ) { 423 $_desc = $term_to_ancestor[ $desc ]; 424 unset( $term_to_ancestor[ $desc ] ); 425 $desc = $_desc; 426 } else { 427 $desc = 0; 428 } 429 } while ( ! empty( $desc ) ); 430 } 431 } 432 } 433 } 434 } elseif ( ! empty( $queried_object->taxonomy ) && is_taxonomy_hierarchical( $queried_object->taxonomy ) ) { 435 $term_hierarchy = _get_term_hierarchy( $queried_object->taxonomy ); 436 $term_to_ancestor = array(); 437 foreach ( (array) $term_hierarchy as $anc => $descs ) { 438 foreach ( (array) $descs as $desc ) 439 $term_to_ancestor[ $desc ] = $anc; 440 } 441 $desc = $queried_object->term_id; 442 do { 443 $possible_taxonomy_ancestors[ $queried_object->taxonomy ][] = $desc; 444 if ( isset( $term_to_ancestor[ $desc ] ) ) { 445 $_desc = $term_to_ancestor[ $desc ]; 446 unset( $term_to_ancestor[ $desc ] ); 447 $desc = $_desc; 448 } else { 449 $desc = 0; 450 } 451 } while ( ! empty( $desc ) ); 452 } 453 454 $possible_object_parents = array_filter( $possible_object_parents ); 455 456 $front_page_url = home_url(); 457 458 foreach ( (array) $menu_items as $key => $menu_item ) { 459 460 $menu_items[$key]->current = false; 461 462 $classes = (array) $menu_item->classes; 463 $classes[] = 'menu-item'; 464 $classes[] = 'menu-item-type-' . $menu_item->type; 465 $classes[] = 'menu-item-object-' . $menu_item->object; 466 467 // if the menu item corresponds to a taxonomy term for the currently-queried non-hierarchical post object 468 if ( $wp_query->is_singular && 'taxonomy' == $menu_item->type && in_array( $menu_item->object_id, $possible_object_parents ) ) { 469 $active_parent_object_ids[] = (int) $menu_item->object_id; 470 $active_parent_item_ids[] = (int) $menu_item->db_id; 471 $active_object = $queried_object->post_type; 472 473 // if the menu item corresponds to the currently-queried post or taxonomy object 474 } elseif ( 475 $menu_item->object_id == $queried_object_id && 476 ( 477 ( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && $wp_query->is_home && $home_page_id == $menu_item->object_id ) || 478 ( 'post_type' == $menu_item->type && $wp_query->is_singular ) || 479 ( 'taxonomy' == $menu_item->type && ( $wp_query->is_category || $wp_query->is_tag || $wp_query->is_tax ) && $queried_object->taxonomy == $menu_item->object ) 480 ) 481 ) { 482 $classes[] = 'current-menu-item'; 483 $menu_items[$key]->current = true; 484 $_anc_id = (int) $menu_item->db_id; 485 486 while( 487 ( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) && 488 ! in_array( $_anc_id, $active_ancestor_item_ids ) 489 ) { 490 $active_ancestor_item_ids[] = $_anc_id; 491 } 492 493 if ( 'post_type' == $menu_item->type && 'page' == $menu_item->object ) { 494 // Back compat classes for pages to match wp_page_menu() 495 $classes[] = 'page_item'; 496 $classes[] = 'page-item-' . $menu_item->object_id; 497 $classes[] = 'current_page_item'; 498 } 499 $active_parent_item_ids[] = (int) $menu_item->menu_item_parent; 500 $active_parent_object_ids[] = (int) $menu_item->post_parent; 501 $active_object = $menu_item->object; 502 503 // if the menu item corresponds to the currently-requested URL 504 } elseif ( 'custom' == $menu_item->object ) { 505 $_root_relative_current = untrailingslashit( $_SERVER['REQUEST_URI'] ); 506 $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_root_relative_current ); 507 $raw_item_url = strpos( $menu_item->url, '#' ) ? substr( $menu_item->url, 0, strpos( $menu_item->url, '#' ) ) : $menu_item->url; 508 $item_url = untrailingslashit( $raw_item_url ); 509 $_indexless_current = untrailingslashit( preg_replace( '/' . preg_quote( $wp_rewrite->index, '/' ) . '$/', '', $current_url ) ); 510 511 if ( $raw_item_url && in_array( $item_url, array( $current_url, $_indexless_current, $_root_relative_current ) ) ) { 512 $classes[] = 'current-menu-item'; 513 $menu_items[$key]->current = true; 514 $_anc_id = (int) $menu_item->db_id; 515 516 while( 517 ( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) && 518 ! in_array( $_anc_id, $active_ancestor_item_ids ) 519 ) { 520 $active_ancestor_item_ids[] = $_anc_id; 521 } 522 523 if ( in_array( home_url(), array( untrailingslashit( $current_url ), untrailingslashit( $_indexless_current ) ) ) ) { 524 // Back compat for home link to match wp_page_menu() 525 $classes[] = 'current_page_item'; 526 } 527 $active_parent_item_ids[] = (int) $menu_item->menu_item_parent; 528 $active_parent_object_ids[] = (int) $menu_item->post_parent; 529 $active_object = $menu_item->object; 530 531 // give front page item current-menu-item class when extra query arguments involved 532 } elseif ( $item_url == $front_page_url && is_front_page() ) { 533 $classes[] = 'current-menu-item'; 534 } 535 536 if ( untrailingslashit($item_url) == home_url() ) 537 $classes[] = 'menu-item-home'; 538 } 539 540 // back-compat with wp_page_menu: add "current_page_parent" to static home page link for any non-page query 541 if ( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && empty( $wp_query->is_page ) && $home_page_id == $menu_item->object_id ) 542 $classes[] = 'current_page_parent'; 543 544 $menu_items[$key]->classes = array_unique( $classes ); 545 } 546 $active_ancestor_item_ids = array_filter( array_unique( $active_ancestor_item_ids ) ); 547 $active_parent_item_ids = array_filter( array_unique( $active_parent_item_ids ) ); 548 $active_parent_object_ids = array_filter( array_unique( $active_parent_object_ids ) ); 549 550 // set parent's class 551 foreach ( (array) $menu_items as $key => $parent_item ) { 552 $classes = (array) $parent_item->classes; 553 $menu_items[$key]->current_item_ancestor = false; 554 $menu_items[$key]->current_item_parent = false; 555 556 if ( 557 isset( $parent_item->type ) && 558 ( 559 // ancestral post object 560 ( 561 'post_type' == $parent_item->type && 562 ! empty( $queried_object->post_type ) && 563 is_post_type_hierarchical( $queried_object->post_type ) && 564 in_array( $parent_item->object_id, $queried_object->ancestors ) && 565 $parent_item->object != $queried_object->ID 566 ) || 567 568 // ancestral term 569 ( 570 'taxonomy' == $parent_item->type && 571 isset( $possible_taxonomy_ancestors[ $parent_item->object ] ) && 572 in_array( $parent_item->object_id, $possible_taxonomy_ancestors[ $parent_item->object ] ) && 573 ( 574 ! isset( $queried_object->term_id ) || 575 $parent_item->object_id != $queried_object->term_id 576 ) 577 ) 578 ) 579 ) { 580 $classes[] = empty( $queried_object->taxonomy ) ? 'current-' . $queried_object->post_type . '-ancestor' : 'current-' . $queried_object->taxonomy . '-ancestor'; 581 } 582 583 if ( in_array( intval( $parent_item->db_id ), $active_ancestor_item_ids ) ) { 584 $classes[] = 'current-menu-ancestor'; 585 $menu_items[$key]->current_item_ancestor = true; 586 } 587 if ( in_array( $parent_item->db_id, $active_parent_item_ids ) ) { 588 $classes[] = 'current-menu-parent'; 589 $menu_items[$key]->current_item_parent = true; 590 } 591 if ( in_array( $parent_item->object_id, $active_parent_object_ids ) ) 592 $classes[] = 'current-' . $active_object . '-parent'; 593 594 if ( 'post_type' == $parent_item->type && 'page' == $parent_item->object ) { 595 // Back compat classes for pages to match wp_page_menu() 596 if ( in_array('current-menu-parent', $classes) ) 597 $classes[] = 'current_page_parent'; 598 if ( in_array('current-menu-ancestor', $classes) ) 599 $classes[] = 'current_page_ancestor'; 600 } 601 602 $menu_items[$key]->classes = array_unique( $classes ); 603 } 604 } 605 606 /** 607 * Retrieve the HTML list content for nav menu items. 608 * 609 * @uses Walker_Nav_Menu to create HTML list content. 610 * @since 3.0.0 611 * @see Walker::walk() for parameters and return description. 612 */ 613 function walk_nav_menu_tree( $items, $depth, $r ) { 614 $walker = ( empty($r->walker) ) ? new Walker_Nav_Menu : $r->walker; 615 $args = array( $items, $depth, $r ); 616 617 return call_user_func_array( array($walker, 'walk'), $args ); 618 } 619 620 /** 621 * Prevents a menu item ID from being used more than once. 622 * 623 * @since 3.0.1 624 * @access private 625 */ 626 function _nav_menu_item_id_use_once( $id, $item ) { 627 static $_used_ids = array(); 628 if ( in_array( $item->ID, $_used_ids ) ) 629 return ''; 630 $_used_ids[] = $item->ID; 631 return $id; 632 } 633 add_filter( 'nav_menu_item_id', '_nav_menu_item_id_use_once', 10, 2 );
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| Generated: Tue Mar 25 01:41:18 2014 | WordPress honlapkészítés: online1.hu |