WordPress/wp-includes/nav-menu.php

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<?php
/**
* Navigation Menu functions
*
* @package WordPress
* @subpackage Navigation Menus
* @since 3.0.0
*/
// Deletes a nav menu
function wp_delete_nav_menu( $menu_id ) {
$menu_id = (int) $menu_id;
if ( !$menu_id )
return false;
$menu_objects = get_objects_in_term( $menu_id, 'nav_menu' );
if ( !empty( $menu_objects ) ) {
foreach ( $menu_objects as $item ) {
wp_delete_post( $item );
}
}
wp_delete_term( $menu_id, 'nav_menu' );
}
// Creates a new nav menu
function wp_create_nav_menu( $menu_name, $args = array() ) {
$menu_exists = get_term_by( 'name', $menu_name, 'nav_menu' );
if ( $menu_exists )
return new WP_Error( 'menu_exists', sprintf( __('A menu named &#8220;%s&#8221; already exists; please try another name.'), esc_html( $menu_exists->name ) ) );
if ( isset($args['slug']) )
$slug = $args['slug'];
else
$slug = $menu_name;
$menu = wp_insert_term( $menu_name, 'nav_menu', array('slug' => $slug) );
if ( is_wp_error($menu) )
return $menu;
return get_term( $menu['term_id'], 'nav_menu');
}
// Creates a default menu if none exists
function wp_create_default_nav_menu() {
$menu = wp_create_nav_menu( __('Menu 1'), array('slug' => 'menu-1') );
if ( is_wp_error($menu) )
return;
$pages = get_pages( array('parent' => 0, 'number' => 15) );
$counter = 1;
foreach ( $pages as $page ) {
$item = array( 'post_status' => 'publish', 'post_type' => 'nav_menu_item', 'menu_order' => $counter, 'tax_input' => array( 'nav_menu' => $menu->name), 'post_title' => addslashes($page->post_title) );
$item_id = wp_insert_post($item, true);
update_post_meta( $item_id, 'menu_type', 'page' );
update_post_meta( $item_id, 'object_id', $page->ID );
update_post_meta( $item_id, 'menu_new_window', 0 );
$counter++;
}
}
// Get nav menu by id
function wp_get_nav_menu( $menu ) {
return get_term( (int) $menu, 'nav_menu' );
}
// Get all nav menus
function wp_get_nav_menus() {
return get_terms( 'nav_menu', array( 'hide_empty' => false, 'orderby' => 'id' ) );
}
// Get the nav menu items
function wp_get_nav_menu_items( $menu, $args = array() ) {
$items = get_objects_in_term( (int) $menu, 'nav_menu' );
if ( ! empty( $items ) ) {
$defaults = array( 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item', 'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order' );
$args = wp_parse_args($args, $defaults);
if ( count( $items ) > 1 )
$args['include'] = implode( ',', $items );
else
$args['include'] = $items[0];
$items = get_posts( $args );
if ( ARRAY_A == $args['output'] ) {
$output = array();
foreach ( $items as $item ) {
$output[$item->$args['output_key']] = $item;
}
unset($items);
ksort($output);
return $output;
}
}
return $items;
}
// wp_setup_nav_menu_item()
function wp_setup_nav_menu_item($menu_item, $type = 'item', $position = 0) {
global $parent_menu_order;
if ( 'item' == $type ) {
$menu_item->type = get_post_meta($menu_item->ID, 'menu_type', true);
$menu_item->object_id = get_post_meta($menu_item->ID, 'object_id', true);
$menu_item->target = ( get_post_meta( $menu_item->ID, 'menu_new_window', true ) ) ? 'target="_blank"' : '';
if ( isset( $parent_menu_order[ $menu_item->post_parent ] ) )
$menu_item->parent_item = $parent_menu_order[ $menu_item->post_parent ];
else
$menu_item->parent_item = 0;
} elseif ( 'category' == $type ) {
$menu_item->type = $type;
$menu_item->object_id = $menu_item->term_id;
$menu_item->ID = $menu_item->term_id;
$menu_item->parent_item = $menu_item->parent;
$menu_item->menu_order = $position;
} elseif ( 'page' == $type ) {
$menu_item->type = $type;
$menu_item->object_id = $menu_item->ID;
$menu_item->parent_item = $menu_item->post_parent;
$menu_item->menu_order = $position;
}
switch ( $menu_item->type ) {
case 'page' :
$menu_item->link = get_page_link( $menu_item->object_id );
if ( $menu_item->post_title == '' )
$menu_item->title = get_the_title( $menu_item->object_id );
else
$menu_item->title = $menu_item->post_title;
if ( $menu_item->post_content == '' )
$menu_item->description = get_post_meta( $menu_item->ID, 'page-description', true );
else
$menu_item->description = $menu_item->post_content;
$menu_item->append = _x('Page', 'menu nav item type');
break;
case 'category' :
$menu_item->link = get_category_link( $menu_item->object_id );
if ( empty($menu_item->post_title) ) {
$title_raw = get_category( $menu_item->object_id );
$menu_item->title = $title_raw->cat_name;
} else {
$menu_item->title = $menu_item->post_title;
}
if ( empty($menu_item->post_content) )
$menu_item->description = strip_tags( category_description( $menu_item->object_id ) );
else
$menu_item->description = $menu_item->post_content;
$menu_item->append = _x('Category', 'menu nav item type');
break;
case 'custom' :
default :
$menu_item->link = esc_url_raw( get_post_meta( $menu_item->ID, 'menu_link', true ) );
$menu_item->title = $menu_item->post_title;
$menu_item->description = $menu_item->post_content;
$menu_item->append = _x('Custom', 'menu nav item type');
break;
}
$menu_item->li_class = '';
global $wp_query;
if ( $menu_item->ID == $wp_query->get_queried_object_id() )
$menu_item->li_class = 'class="current_page_item"';
$menu_item->anchor_title = '';
/* @todo: update to use tax/post data
//SET anchor title
if (isset($wp_custom_nav_menu_items->custom_anchor_title)) {
$anchor_title = $wp_custom_nav_menu_items->custom_anchor_title;
}
else {
$anchor_title = $title;
}
if ($queried_id == $wp_custom_nav_menu_items->post_id) {
$li_class = 'class="current_page_item"';
}
if (isset($wp_custom_nav_menu_items->new_window)) {
if ($wp_custom_nav_menu_items->new_window > 0) {
$target = 'target="_blank"';
}
else {
$target = '';
}
}
*/
return $menu_item;
}
?>