447 lines
16 KiB
PHP
447 lines
16 KiB
PHP
<?php
|
|
/**
|
|
* Navigation Menu template functions
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Nav_Menus
|
|
* @since 3.0.0
|
|
*/
|
|
|
|
/**
|
|
* Create HTML list of nav menu items.
|
|
*
|
|
* @package WordPress
|
|
* @since 3.0.0
|
|
* @uses Walker
|
|
*/
|
|
class Walker_Nav_Menu extends Walker {
|
|
/**
|
|
* @see Walker::$tree_type
|
|
* @since 3.0.0
|
|
* @var string
|
|
*/
|
|
var $tree_type = array( 'post_type', 'taxonomy', 'custom' );
|
|
|
|
/**
|
|
* @see Walker::$db_fields
|
|
* @since 3.0.0
|
|
* @todo Decouple this.
|
|
* @var array
|
|
*/
|
|
var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' );
|
|
|
|
/**
|
|
* @see Walker::start_lvl()
|
|
* @since 3.0.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of page. Used for padding.
|
|
*/
|
|
function start_lvl(&$output, $depth) {
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "\n$indent<ul class=\"sub-menu\">\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_lvl()
|
|
* @since 3.0.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param int $depth Depth of page. Used for padding.
|
|
*/
|
|
function end_lvl(&$output, $depth) {
|
|
$indent = str_repeat("\t", $depth);
|
|
$output .= "$indent</ul>\n";
|
|
}
|
|
|
|
/**
|
|
* @see Walker::start_el()
|
|
* @since 3.0.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $item Menu item data object.
|
|
* @param int $depth Depth of menu item. Used for padding.
|
|
* @param int $current_page Menu item ID.
|
|
* @param object $args
|
|
*/
|
|
function start_el(&$output, $item, $depth, $args) {
|
|
global $wp_query;
|
|
$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
|
|
|
|
$class_names = $value = '';
|
|
|
|
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
|
|
|
|
$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );
|
|
$class_names = ' class="' . esc_attr( $class_names ) . '"';
|
|
|
|
$output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'>';
|
|
|
|
$attributes = ! empty( $item->attr_title ) ? ' title="' . esc_attr( $item->attr_title ) .'"' : '';
|
|
$attributes .= ! empty( $item->target ) ? ' target="' . esc_attr( $item->target ) .'"' : '';
|
|
$attributes .= ! empty( $item->xfn ) ? ' rel="' . esc_attr( $item->xfn ) .'"' : '';
|
|
$attributes .= ! empty( $item->url ) ? ' href="' . esc_attr( $item->url ) .'"' : '';
|
|
|
|
$item_output = $args->before;
|
|
$item_output .= '<a'. $attributes .'>';
|
|
$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
|
|
$item_output .= '</a>';
|
|
$item_output .= $args->after;
|
|
|
|
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
|
|
}
|
|
|
|
/**
|
|
* @see Walker::end_el()
|
|
* @since 3.0.0
|
|
*
|
|
* @param string $output Passed by reference. Used to append additional content.
|
|
* @param object $item Page data object. Not used.
|
|
* @param int $depth Depth of page. Not Used.
|
|
*/
|
|
function end_el(&$output, $item, $depth) {
|
|
$output .= "</li>\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Displays a navigation menu.
|
|
*
|
|
* Optional $args contents:
|
|
*
|
|
* menu - The menu that is desired. Accepts (matching in order) id, slug, name. Defaults to blank.
|
|
* menu_class - CSS class to use for the ul element which forms the menu. Defaults to 'menu'.
|
|
* menu_id - The ID that is applied to the ul element which forms the menu. Defaults to the menu slug, incremented.
|
|
* container - Whether to wrap the ul, and what to wrap it with. Defaults to 'div'.
|
|
* container_class - the class that is applied to the container. Defaults to 'menu-{menu slug}-container'.
|
|
* container_id - The ID that is applied to the container. Defaults to blank.
|
|
* fallback_cb - If the menu doesn't exists, a callback function will fire. Defaults to 'wp_page_menu'.
|
|
* before - Text before the link text.
|
|
* after - Text after the link text.
|
|
* link_before - Text before the link.
|
|
* link_after - Text after the link.
|
|
* echo - Whether to echo the menu or return it. Defaults to echo.
|
|
* depth - how many levels of the hierarchy are to be included. 0 means all. Defaults to 0.
|
|
* walker - allows a custom walker to be specified.
|
|
* 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.
|
|
*
|
|
* @since 3.0.0
|
|
*
|
|
* @param array $args Arguments
|
|
*/
|
|
function wp_nav_menu( $args = array() ) {
|
|
static $menu_id_slugs = array();
|
|
|
|
$defaults = array( 'menu' => '', 'container' => 'div', 'container_class' => '', 'container_id' => '', 'menu_class' => 'menu', 'menu_id' => '',
|
|
'echo' => true, 'fallback_cb' => 'wp_page_menu', 'before' => '', 'after' => '', 'link_before' => '', 'link_after' => '',
|
|
'depth' => 0, 'walker' => '', 'theme_location' => '' );
|
|
|
|
$args = wp_parse_args( $args, $defaults );
|
|
$args = apply_filters( 'wp_nav_menu_args', $args );
|
|
$args = (object) $args;
|
|
|
|
// Get the nav menu based on the requested menu
|
|
$menu = wp_get_nav_menu_object( $args->menu );
|
|
|
|
// Get the nav menu based on the theme_location
|
|
if ( ! $menu && $args->theme_location && ( $locations = get_nav_menu_locations() ) && isset( $locations[ $args->theme_location ] ) )
|
|
$menu = wp_get_nav_menu_object( $locations[ $args->theme_location ] );
|
|
|
|
// get the first menu that has items if we still can't find a menu
|
|
if ( ! $menu && !$args->theme_location ) {
|
|
$menus = wp_get_nav_menus();
|
|
foreach ( $menus as $menu_maybe ) {
|
|
if ( $menu_items = wp_get_nav_menu_items($menu_maybe->term_id) ) {
|
|
$menu = $menu_maybe;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If the menu exists, get its items.
|
|
if ( $menu && ! is_wp_error($menu) && !isset($menu_items) )
|
|
$menu_items = wp_get_nav_menu_items( $menu->term_id );
|
|
|
|
// If no menu was found or if the menu has no items and no location was requested, call the fallback_cb if it exists
|
|
if ( ( !$menu || is_wp_error($menu) || ( isset($menu_items) && empty($menu_items) && !$args->theme_location ) )
|
|
&& ( function_exists($args->fallback_cb) || is_callable( $args->fallback_cb ) ) )
|
|
return call_user_func( $args->fallback_cb, (array) $args );
|
|
|
|
// If no fallback function was specified and the menu doesn't exists, bail.
|
|
if ( !$menu || is_wp_error($menu) )
|
|
return false;
|
|
|
|
$nav_menu = $items = '';
|
|
|
|
$show_container = false;
|
|
if ( $args->container ) {
|
|
$allowed_tags = apply_filters( 'wp_nav_menu_container_allowedtags', array( 'div', 'nav' ) );
|
|
if ( in_array( $args->container, $allowed_tags ) ) {
|
|
$show_container = true;
|
|
$class = $args->container_class ? ' class="' . esc_attr( $args->container_class ) . '"' : ' class="menu-'. $menu->slug .'-container"';
|
|
$id = $args->container_id ? ' id="' . esc_attr( $args->container_id ) . '"' : '';
|
|
$nav_menu .= '<'. $args->container . $id . $class . '>';
|
|
}
|
|
}
|
|
|
|
// Set up the $menu_item variables
|
|
_wp_menu_item_classes_by_context( $menu_items );
|
|
|
|
$sorted_menu_items = array();
|
|
foreach ( (array) $menu_items as $key => $menu_item )
|
|
$sorted_menu_items[$menu_item->menu_order] = $menu_item;
|
|
|
|
unset($menu_items);
|
|
|
|
$items .= walk_nav_menu_tree( $sorted_menu_items, $args->depth, $args );
|
|
unset($sorted_menu_items);
|
|
|
|
// Attributes
|
|
if ( ! empty( $args->menu_id ) ) {
|
|
$slug = $args->menu_id;
|
|
} else {
|
|
$slug = 'menu-' . $menu->slug;
|
|
while ( in_array( $slug, $menu_id_slugs ) ) {
|
|
if ( preg_match( '#-(\d+)$#', $slug, $matches ) )
|
|
$slug = preg_replace('#-(\d+)$#', '-' . ++$matches[1], $slug);
|
|
else
|
|
$slug = $slug . '-1';
|
|
}
|
|
}
|
|
$menu_id_slugs[] = $slug;
|
|
$attributes = ' id="' . $slug . '"';
|
|
$attributes .= $args->menu_class ? ' class="'. $args->menu_class .'"' : '';
|
|
|
|
$nav_menu .= '<ul'. $attributes .'>';
|
|
|
|
// Allow plugins to hook into the menu to add their own <li>'s
|
|
$items = apply_filters( 'wp_nav_menu_items', $items, $args );
|
|
$items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args );
|
|
$nav_menu .= $items;
|
|
unset($items);
|
|
|
|
$nav_menu .= '</ul>';
|
|
|
|
if ( $show_container )
|
|
$nav_menu .= '</' . $args->container . '>';
|
|
|
|
$nav_menu = apply_filters( 'wp_nav_menu', $nav_menu, $args );
|
|
|
|
if ( $args->echo )
|
|
echo $nav_menu;
|
|
else
|
|
return $nav_menu;
|
|
}
|
|
|
|
/**
|
|
* Add the class property classes for the current context, if applicable.
|
|
*
|
|
* @access private
|
|
* @since 3.0
|
|
*
|
|
* @param array $menu_items The current menu item objects to which to add the class property information.
|
|
*/
|
|
function _wp_menu_item_classes_by_context( &$menu_items ) {
|
|
global $wp_query;
|
|
|
|
$queried_object = $wp_query->get_queried_object();
|
|
$queried_object_id = (int) $wp_query->queried_object_id;
|
|
|
|
$active_object = '';
|
|
$active_ancestor_item_ids = array();
|
|
$active_parent_item_ids = array();
|
|
$active_parent_object_ids = array();
|
|
$possible_taxonomy_ancestors = array();
|
|
$possible_object_parents = array();
|
|
$home_page_id = (int) get_option( 'page_for_posts' );
|
|
|
|
if ( $wp_query->is_singular && ! empty( $queried_object->post_type ) && ! is_post_type_hierarchical( $queried_object->post_type ) ) {
|
|
foreach ( (array) get_object_taxonomies( $queried_object->post_type ) as $taxonomy ) {
|
|
if ( is_taxonomy_hierarchical( $taxonomy ) ) {
|
|
$term_hierarchy = _get_term_hierarchy( $taxonomy );
|
|
$terms = wp_get_object_terms( $queried_object_id, $taxonomy, array( 'fields' => 'ids' ) );
|
|
if ( is_array( $terms ) ) {
|
|
$possible_object_parents = array_merge( $possible_object_parents, $terms );
|
|
$term_to_ancestor = array();
|
|
foreach ( (array) $term_hierarchy as $anc => $descs ) {
|
|
foreach ( (array) $descs as $desc )
|
|
$term_to_ancestor[ $desc ] = $anc;
|
|
}
|
|
|
|
foreach ( $terms as $desc ) {
|
|
do {
|
|
$possible_taxonomy_ancestors[ $taxonomy ][] = $desc;
|
|
if ( isset( $term_to_ancestor[ $desc ] ) ) {
|
|
$_desc = $term_to_ancestor[ $desc ];
|
|
unset( $term_to_ancestor[ $desc ] );
|
|
$desc = $_desc;
|
|
} else {
|
|
$desc = 0;
|
|
}
|
|
} while ( ! empty( $desc ) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} elseif ( ! empty( $queried_object->post_type ) && is_post_type_hierarchical( $queried_object->post_type ) ) {
|
|
_get_post_ancestors( $queried_object );
|
|
} elseif ( ! empty( $queried_object->taxonomy ) && is_taxonomy_hierarchical( $queried_object->taxonomy ) ) {
|
|
$term_hierarchy = _get_term_hierarchy( $queried_object->taxonomy );
|
|
$term_to_ancestor = array();
|
|
foreach ( (array) $term_hierarchy as $anc => $descs ) {
|
|
foreach ( (array) $descs as $desc )
|
|
$term_to_ancestor[ $desc ] = $anc;
|
|
}
|
|
$desc = $queried_object->term_id;
|
|
do {
|
|
$possible_taxonomy_ancestors[ $queried_object->taxonomy ][] = $desc;
|
|
if ( isset( $term_to_ancestor[ $desc ] ) ) {
|
|
$_desc = $term_to_ancestor[ $desc ];
|
|
unset( $term_to_ancestor[ $desc ] );
|
|
$desc = $_desc;
|
|
} else {
|
|
$desc = 0;
|
|
}
|
|
} while ( ! empty( $desc ) );
|
|
}
|
|
|
|
$possible_object_parents = array_filter( $possible_object_parents );
|
|
|
|
foreach ( (array) $menu_items as $key => $menu_item ) {
|
|
$classes = (array) $menu_item->classes;
|
|
$classes[] = 'menu-item';
|
|
$classes[] = 'menu-item-type-' . $menu_item->type;
|
|
|
|
// if the menu item corresponds to a taxonomy term for the currently-queried non-hierarchical post object
|
|
if ( $wp_query->is_singular && 'taxonomy' == $menu_item->type && in_array( $menu_item->object_id, $possible_object_parents ) ) {
|
|
$active_parent_object_ids[] = (int) $menu_item->object_id;
|
|
$active_parent_item_ids[] = (int) $menu_item->db_id;
|
|
$active_object = $queried_object->post_type;
|
|
|
|
// if the menu item corresponds to the currently-queried post or taxonomy object
|
|
} elseif (
|
|
$menu_item->object_id == $queried_object_id &&
|
|
(
|
|
( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && $wp_query->is_home && $home_page_id == $menu_item->object_id ) ||
|
|
( 'post_type' == $menu_item->type && $wp_query->is_singular ) ||
|
|
( 'taxonomy' == $menu_item->type && ( $wp_query->is_category || $wp_query->is_tag || $wp_query->is_tax ) )
|
|
)
|
|
) {
|
|
$classes[] = 'current-menu-item';
|
|
$_anc_id = (int) $menu_item->db_id;
|
|
|
|
while(
|
|
( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) &&
|
|
! in_array( $_anc_id, $active_ancestor_item_ids )
|
|
) {
|
|
$active_ancestor_item_ids[] = $_anc_id;
|
|
}
|
|
|
|
if ( 'post_type' == $menu_item->type && 'page' == $menu_item->object ) {
|
|
// Back compat classes for pages to match wp_page_menu()
|
|
$classes[] = 'page_item';
|
|
$classes[] = 'page-item-' . $menu_item->object_id;
|
|
$classes[] = 'current_page_item';
|
|
}
|
|
$active_parent_item_ids[] = (int) $menu_item->menu_item_parent;
|
|
$active_parent_object_ids[] = (int) $menu_item->post_parent;
|
|
$active_object = $menu_item->object;
|
|
|
|
// if the menu item corresponds to the currently-requested URL
|
|
} elseif ( 'custom' == $menu_item->object ) {
|
|
$current_url = ( is_ssl() ? 'https://' : 'http://' ) . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
|
|
$item_url = strpos( $menu_item->url, '#' ) ? substr( $menu_item->url, 0, strpos( $menu_item->url, '#' ) ) : $menu_item->url;
|
|
if ( $item_url == $current_url ) {
|
|
$classes[] = 'current-menu-item';
|
|
$_anc_id = (int) $menu_item->db_id;
|
|
|
|
while(
|
|
( $_anc_id = get_post_meta( $_anc_id, '_menu_item_menu_item_parent', true ) ) &&
|
|
! in_array( $_anc_id, $active_ancestor_item_ids )
|
|
) {
|
|
$active_ancestor_item_ids[] = $_anc_id;
|
|
}
|
|
|
|
if ( untrailingslashit($current_url) == home_url() ) {
|
|
$classes[] = 'menu-item-home';
|
|
// Back compat for home limk to match wp_page_menu()
|
|
$classes[] = 'current_page_item';
|
|
}
|
|
$active_parent_item_ids[] = (int) $menu_item->menu_item_parent;
|
|
$active_parent_object_ids[] = (int) $menu_item->post_parent;
|
|
$active_object = $menu_item->object;
|
|
}
|
|
}
|
|
|
|
// back-compat with wp_page_menu: add "current_page_parent" to static home page link for any non-page query
|
|
if ( ! empty( $home_page_id ) && 'post_type' == $menu_item->type && empty( $wp_query->is_page ) && $home_page_id == $menu_item->object_id )
|
|
$classes[] = 'current_page_parent';
|
|
|
|
$menu_items[$key]->classes = array_unique( $classes );
|
|
}
|
|
$active_ancestor_item_ids = array_filter( array_unique( $active_ancestor_item_ids ) );
|
|
$active_parent_item_ids = array_filter( array_unique( $active_parent_item_ids ) );
|
|
$active_parent_object_ids = array_filter( array_unique( $active_parent_object_ids ) );
|
|
|
|
// set parent's class
|
|
foreach ( (array) $menu_items as $key => $parent_item ) {
|
|
$classes = (array) $parent_item->classes;
|
|
|
|
if (
|
|
isset( $parent_item->type ) &&
|
|
(
|
|
// ancestral post object
|
|
(
|
|
'post_type' == $parent_item->type &&
|
|
! empty( $queried_object->post_type ) &&
|
|
is_post_type_hierarchical( $queried_object->post_type ) &&
|
|
in_array( $parent_item->object_id, $queried_object->ancestors )
|
|
) ||
|
|
|
|
// ancestral term
|
|
(
|
|
'taxonomy' == $parent_item->type &&
|
|
isset( $possible_taxonomy_ancestors[ $parent_item->object ] ) &&
|
|
in_array( $parent_item->object_id, $possible_taxonomy_ancestors[ $parent_item->object ] )
|
|
)
|
|
)
|
|
) {
|
|
$classes[] = empty( $queried_object->taxonomy ) ? 'current-' . $queried_object->post_type . '-ancestor' : 'current-' . $queried_object->taxonomy . '-ancestor';
|
|
}
|
|
|
|
if ( in_array( intval( $parent_item->db_id ), $active_ancestor_item_ids ) ) {
|
|
$classes[] = 'current-menu-ancestor';
|
|
}
|
|
if ( in_array( $parent_item->db_id, $active_parent_item_ids ) )
|
|
$classes[] = 'current-menu-parent';
|
|
if ( in_array( $parent_item->object_id, $active_parent_object_ids ) )
|
|
$classes[] = 'current-' . $active_object . '-parent';
|
|
|
|
if ( 'post_type' == $parent_item->type && 'page' == $parent_item->object ) {
|
|
// Back compat classes for pages to match wp_page_menu()
|
|
if ( in_array('current-menu-parent', $classes) )
|
|
$classes[] = 'current_page_parent';
|
|
if ( in_array('current-menu-ancestor', $classes) )
|
|
$classes[] = 'current_page_ancestor';
|
|
}
|
|
|
|
$menu_items[$key]->classes = array_unique( $classes );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieve the HTML list content for nav menu items.
|
|
*
|
|
* @uses Walker_Nav_Menu to create HTML list content.
|
|
* @since 2.1.0
|
|
* @see Walker::walk() for parameters and return description.
|
|
*/
|
|
function walk_nav_menu_tree( $items, $depth, $r ) {
|
|
$walker = ( empty($r->walker) ) ? new Walker_Nav_Menu : $r->walker;
|
|
$args = array( $items, $depth, $r );
|
|
|
|
return call_user_func_array( array(&$walker, 'walk'), $args );
|
|
}
|
|
|
|
?>
|