283 lines
7.5 KiB
PHP
283 lines
7.5 KiB
PHP
<?php
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/**
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* Navigation Menu functions
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*
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* @package WordPress
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* @subpackage Navigation Menus
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* @since 3.0.0
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*/
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/**
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* Returns a Navigation Menu object
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*
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* @since 3.0.0
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*
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* @param string $menu Menu id
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* @return mixed $menu|false
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*/
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function wp_get_nav_menu_object( $menu ) {
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return is_nav_menu( $menu );
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}
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/**
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* Check if Menu exists.
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*
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* Returns the menu object, or false if the term doesn't exist.
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*
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* @since 3.0.0
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*
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* @param int|string $menu The menu to check
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* @return mixed Menu Object, if exists.
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*/
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function is_nav_menu( $menu ) {
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if ( $menu ) {
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$menu = get_term( $menu, 'nav_menu' );
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} elseif ( !$menu ) {
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$menu = get_term_by( 'slug', $menu, 'nav_menu' );
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} elseif( !$menu ) {
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$menu = get_term_by( 'name', $menu, 'nav_menu' );
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} else {
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$menu = false;
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}
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return $menu;
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}
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/**
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* Returns all Navigation Menu objects.
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*
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* @since 3.0.0
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*
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* @return array menu objects
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*/
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function wp_get_nav_menus() {
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return get_terms( 'nav_menu', array( 'hide_empty' => false, 'orderby' => 'id' ) );
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}
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/**
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* Creates a navigation menu.
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*
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* Optional args:
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* slug - the url friendly version of the nav menu.
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*
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* @since 3.0.0
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*
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* @param string $menu_name Menu Name
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* @param string $args Optional.
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* @return mixed Menu object|WP_Error
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*/
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function wp_create_nav_menu( $menu_name, $args = array() ) {
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$menu_exists = get_term_by( 'name', $menu_name, 'nav_menu' );
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if ( $menu_exists )
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return new WP_Error( 'menu_exists', sprintf( __('A menu named “%s” already exists; please try another name.'), esc_html( $menu_exists->name ) ) );
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if ( isset($args['slug']) )
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$slug = $args['slug'];
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else
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$slug = $menu_name;
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$menu = wp_insert_term( $menu_name, 'nav_menu', array('slug' => $slug) );
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if ( is_wp_error($menu) )
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return $menu;
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return get_term( $menu['term_id'], 'nav_menu') ;
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}
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/**
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* Deletes a navigation menu.
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*
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* @since 3.0.0
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*
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* @param string $menu name|id|slug
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* @return bool true on success, else false.
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*/
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function wp_delete_nav_menu( $menu ) {
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$menu = wp_get_nav_menu_object( $menu );
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if ( !$menu )
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return false;
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$menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' );
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if ( !empty( $menu_objects ) ) {
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foreach ( $menu_objects as $item ) {
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wp_delete_post( $item );
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}
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}
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wp_delete_term( $menu_id, 'nav_menu' );
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}
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/**
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* Creates a nav menu named 'Menu 1'.
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*
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* This function is called if the user doesn't have any nav menus.
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* It grabs the first 14 pages, and creates a new default menu.
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*
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* @since 3.0.0
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*/
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function wp_create_default_nav_menu() {
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$menu = wp_create_nav_menu( __('Menu 1'), array('slug' => 'menu-1') );
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if ( is_wp_error($menu) )
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return;
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$pages = get_pages( array('parent' => 0, 'number' => 15) );
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$counter = 1;
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foreach ( $pages as $page ) {
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$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) );
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$item_id = wp_insert_post($item, true);
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update_post_meta( $item_id, 'menu_type', 'page' );
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update_post_meta( $item_id, 'object_id', $page->ID );
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update_post_meta( $item_id, 'menu_new_window', 0 );
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$counter++;
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}
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}
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/**
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* Returns the menu items of a navigation menu.
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*
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* @since 3.0.0
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*
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* @param string $menu menu name, id, or slug
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* @param string $args
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* @return mixed $items array of menu items, else false.
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*/
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function wp_get_nav_menu_items( $menu, $args = array() ) {
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$menu = wp_get_nav_menu_object( $menu );
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if ( !$menu )
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return false;
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$items = get_objects_in_term( $menu->term_id, 'nav_menu' );
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if ( ! empty( $items ) ) {
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$defaults = array( 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item', 'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order' );
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$args = wp_parse_args( $args, $defaults );
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if ( count( $items ) > 1 )
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$args['include'] = implode( ',', $items );
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else
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$args['include'] = $items[0];
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$items = get_posts( $args );
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if ( ARRAY_A == $args['output'] ) {
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$output = array();
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foreach ( $items as $item ) {
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$output[$item->$args['output_key']] = $item;
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}
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unset( $items );
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ksort( $output );
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return $output;
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}
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}
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return $items;
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}
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/**
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* Returns a menu item with all it's nessecary data populated.
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*
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* @since 3.0.0
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*
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* @param string $menu_item Menu item.
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* @param string $type item|category|page.
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* @param string $position position of the menu item.
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* @return $menu_item
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*/
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function wp_setup_nav_menu_item( $menu_item, $type = 'item', $position = 0 ) {
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global $parent_menu_order;
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if ( 'item' == $type ) {
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$menu_item->type = get_post_meta( $menu_item->ID, 'menu_type', true );
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$menu_item->object_id = get_post_meta( $menu_item->ID, 'object_id', true );
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$menu_item->target = ( get_post_meta( $menu_item->ID, 'menu_new_window', true ) ) ? 'target="_blank"' : '';
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if ( isset( $parent_menu_order[ $menu_item->post_parent ] ) )
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$menu_item->parent_item = $parent_menu_order[ $menu_item->post_parent ];
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else
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$menu_item->parent_item = 0;
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} elseif ( 'category' == $type ) {
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$menu_item->type = $type;
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$menu_item->object_id = $menu_item->term_id;
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$menu_item->ID = $menu_item->term_id;
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$menu_item->parent_item = $menu_item->parent;
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$menu_item->menu_order = $position;
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} elseif ( 'page' == $type ) {
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$menu_item->type = $type;
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$menu_item->object_id = $menu_item->ID;
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$menu_item->parent_item = $menu_item->post_parent;
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$menu_item->menu_order = $position;
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}
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switch ( $menu_item->type ) {
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case 'page' :
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$menu_item->link = get_page_link( $menu_item->object_id );
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if ( $menu_item->post_title == '' )
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$menu_item->title = get_the_title( $menu_item->object_id );
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else
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$menu_item->title = $menu_item->post_title;
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if ( $menu_item->post_content == '' )
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$menu_item->description = get_post_meta( $menu_item->ID, 'page-description', true );
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else
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$menu_item->description = $menu_item->post_content;
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$menu_item->append = _x('Page', 'menu nav item type');
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break;
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case 'category' :
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$menu_item->link = get_category_link( $menu_item->object_id );
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if ( empty($menu_item->post_title) ) {
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$title_raw = get_category( $menu_item->object_id );
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$menu_item->title = $title_raw->cat_name;
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} else {
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$menu_item->title = $menu_item->post_title;
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}
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if ( empty($menu_item->post_content) )
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$menu_item->description = strip_tags( category_description( $menu_item->object_id ) );
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else
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$menu_item->description = $menu_item->post_content;
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$menu_item->append = _x('Category', 'menu nav item type');
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break;
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case 'custom' :
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default :
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$menu_item->link = esc_url_raw( get_post_meta( $menu_item->ID, 'menu_link', true ) );
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$menu_item->title = $menu_item->post_title;
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$menu_item->description = $menu_item->post_content;
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$menu_item->append = _x('Custom', 'menu nav item type');
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break;
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}
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$menu_item->li_class = '';
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global $wp_query;
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if ( $menu_item->object_id == $wp_query->get_queried_object_id() )
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$menu_item->li_class = ' current_page_item';
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$menu_item->anchor_title = '';
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/* @todo: update to use tax/post data
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//SET anchor title
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if (isset($wp_custom_nav_menu_items->custom_anchor_title)) {
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$anchor_title = $wp_custom_nav_menu_items->custom_anchor_title;
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}
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else {
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$anchor_title = $title;
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}
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if ($queried_id == $wp_custom_nav_menu_items->post_id) {
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$li_class = 'class="current_page_item"';
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}
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if (isset($wp_custom_nav_menu_items->new_window)) {
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if ($wp_custom_nav_menu_items->new_window > 0) {
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$target = 'target="_blank"';
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}
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else {
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$target = '';
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}
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}
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*/
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return $menu_item;
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}
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?>
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