<?php
/**
* Build Administration Menu.
*
* @package WordPress
* @subpackage Administration
*/
if ( is_network_admin() ) {
/**
* Fires before the administration menu loads in the Network Admin.
*
* The hook fires before menus and sub-menus are removed based on user privileges.
*
* @private
* @since 3.1.0
*/
do_action( '_network_admin_menu' );
} elseif ( is_user_admin() ) {
/**
* Fires before the administration menu loads in the User Admin.
*
* The hook fires before menus and sub-menus are removed based on user privileges.
*
* @private
* @since 3.1.0
*/
do_action( '_user_admin_menu' );
} else {
/**
* Fires before the administration menu loads in the admin.
*
* The hook fires before menus and sub-menus are removed based on user privileges.
*
* @private
* @since 2.2.0
*/
do_action( '_admin_menu' );
}
// Create list of page plugin hook names.
foreach ( $menu as $menu_page ) {
$pos = strpos( $menu_page[2], '?' );
if ( false !== $pos ) {
// Handle post_type=post|page|foo pages.
$hook_name = substr( $menu_page[2], 0, $pos );
$hook_args = substr( $menu_page[2], $pos + 1 );
wp_parse_str( $hook_args, $hook_args );
// Set the hook name to be the post type.
if ( isset( $hook_args['post_type'] ) ) {
$hook_name = $hook_args['post_type'];
} else {
$hook_name = basename( $hook_name, '.php' );
}
unset( $hook_args );
} else {
$hook_name = basename( $menu_page[2], '.php' );
}
$hook_name = sanitize_title( $hook_name );
if ( isset( $compat[ $hook_name ] ) ) {
$hook_name = $compat[ $hook_name ];
} elseif ( ! $hook_name ) {
continue;
}
$admin_page_hooks[ $menu_page[2] ] = $hook_name;
}
unset( $menu_page, $compat );
$_wp_submenu_nopriv = array();
$_wp_menu_nopriv = array();
// Loop over submenus and remove pages for which the user does not have privs.
foreach ( $submenu as $parent => $sub ) {
foreach ( $sub as $index => $data ) {
if ( ! current_user_can( $data[1] ) ) {
unset( $submenu[ $parent ][ $index ] );
$_wp_submenu_nopriv[ $parent ][ $data[2] ] = true;
}
}
unset( $index, $data );
if ( empty( $submenu[ $parent ] ) ) {
unset( $submenu[ $parent ] );
}
}
unset( $sub, $parent );
/*
* Loop over the top-level menu.
* Menus for which the original parent is not accessible due to lack of privileges
* will have the next submenu in line be assigned as the new menu parent.
*/
foreach ( $menu as $id => $data ) {
if ( empty( $submenu[ $data[2] ] ) ) {
continue;
}
$subs = $submenu[ $data[2] ];
$first_sub = reset( $subs );
$old_parent = $data[2];
$new_parent = $first_sub[2];
/*
* If the first submenu is not the same as the assigned parent,
* make the first submenu the new parent.
*/
if ( $new_parent != $old_parent ) {
$_wp_real_parent_file[ $old_parent ] = $new_parent;
$menu[ $id ][2] = $new_parent;
foreach ( $submenu[ $old_parent ] as $index => $data ) {
$submenu[ $new_parent ][ $index ] = $submenu[ $old_parent ][ $index ];
unset( $submenu[ $old_parent ][ $index ] );
}
unset( $submenu[ $old_parent ], $index );
if ( isset( $_wp_submenu_nopriv[ $old_parent ] ) ) {
$_wp_submenu_nopriv[ $new_parent ] = $_wp_submenu_nopriv[ $old_parent ];
}
}
}
unset( $id, $data, $subs, $first_sub, $old_parent, $new_parent );
if ( is_network_admin() ) {
/**
* Fires before the administration menu loads in the Network Admin.
*
* @since 3.1.0
*
* @param string $context Empty context.
*/
do_action( 'network_admin_menu', '' );
} elseif ( is_user_admin() ) {
/**
* Fires before the administration menu loads in the User Admin.
*
* @since 3.1.0
*
* @param string $context Empty context.
*/
do_action( 'user_admin_menu', '' );
} else {
/**
* Fires before the administration menu loads in the admin.
*
* @since 1.5.0
*
* @param string $context Empty context.
*/
do_action( 'admin_menu', '' );
}
/*
* Remove menus that have no accessible submenus and require privileges
* that the user does not have. Run re-parent loop again.
*/
foreach ( $menu as $id => $data ) {
if ( ! current_user_can( $data[1] ) ) {
$_wp_menu_nopriv[ $data[2] ] = true;
}
/*
* If there is only one submenu and it is has same destination as the parent,
* remove the submenu.
*/
if ( ! empty( $submenu[ $data[2] ] ) && 1 === count( $submenu[ $data[2] ] ) ) {
$subs = $submenu[ $data[2] ];
$first_sub = reset( $subs );
if ( $data[2] == $first_sub[2] ) {
unset( $submenu[ $data[2] ] );
}
}
// If submenu is empty...
if ( empty( $submenu[ $data[2] ] ) ) {
// And user doesn't have privs, remove menu.
if ( isset( $_wp_menu_nopriv[ $data[2] ] ) ) {
unset( $menu[ $id ] );
}
}
}
unset( $id, $data, $subs, $first_sub );
/**
* Adds a CSS class to a string.
*
* @since 2.7.0
*
* @param string $class_to_add The CSS class to add.
* @param string $classes The string to add the CSS class to.
* @return string The string with the CSS class added.
*/
function add_cssclass( $class_to_add, $classes ) {
if ( empty( $classes ) ) {
return $class_to_add;
}
return $classes . ' ' . $class_to_add;
}
/**
* Adds CSS classes for top-level administration menu items.
*
* The list of added classes includes `.menu-top-first` and `.menu-top-last`.
*
* @since 2.7.0
*
* @param array $menu The array of administration menu items.
* @return array The array of administration menu items with the CSS classes added.
*/
function add_menu_classes( $menu ) {
$first_item = false;
$last_order = false;
$items_count = count( $menu );
$i = 0;
foreach ( $menu as $order => $top ) {
$i++;
if ( 0 == $order ) { // Dashboard is always shown/single.
$menu[0][4] = add_cssclass( 'menu-top-first', $top[4] );
$last_order = 0;
continue;
}
if ( 0 === strpos( $top[2], 'separator' ) && false !== $last_order ) { // If separator.
$first_item = true;
$classes = $menu[ $last_order ][4];
$menu[ $last_order ][4] = add_cssclass( 'menu-top-last', $classes );
continue;
}
if ( $first_item ) {
$classes = $menu[ $order ][4];
$menu[ $order ][4] = add_cssclass( 'menu-top-first', $classes );
$first_item = false;
}
if ( $i == $items_count ) { // Last item.
$classes = $menu[ $order ][4];
$menu[ $order ][4] = add_cssclass( 'menu-top-last', $classes );
}
$last_order = $order;
}
/**
* Filters administration menu array with classes added for top-level items.
*
* @since 2.7.0
*
* @param array $menu Associative array of administration menu items.
*/
return apply_filters( 'add_menu_classes', $menu );
}
uksort( $menu, 'strnatcasecmp' ); // Make it all pretty.
/**
* Filters whether to enable custom ordering of the administration menu.
*
* See the {@see 'menu_order'} filter for reordering menu items.
*
* @since 2.8.0
*
* @param bool $custom Whether custom ordering is enabled. Default false.
*/
if ( apply_filters( 'custom_menu_order', false ) ) {
$menu_order = array();
foreach ( $menu as $menu_item ) {
$menu_order[] = $menu_item[2];
}
unset( $menu_item );
$default_menu_order = $menu_order;
/**
* Filters the order of administration menu items.
*
* A truthy value must first be passed to the {@see 'custom_menu_order'} filter
* for this filter to work. Use the following to enable custom menu ordering:
*
* add_filter( 'custom_menu_order', '__return_true' );
*
* @since 2.8.0
*
* @param array $menu_order An ordered array of menu items.
*/
$menu_order = apply_filters( 'menu_order', $menu_order );
$menu_order = array_flip( $menu_order );
$default_menu_order = array_flip( $default_menu_order );
/**
* @global array $menu_order
* @global array $default_menu_order
*
* @param array $a
* @param array $b
* @return int
*/
function sort_menu( $a, $b ) {
global $menu_order, $default_menu_order;
$a = $a[2];
$b = $b[2];
if ( isset( $menu_order[ $a ] ) && ! isset( $menu_order[ $b ] ) ) {
return -1;
} elseif ( ! isset( $menu_order[ $a ] ) && isset( $menu_order[ $b ] ) ) {
return 1;
} elseif ( isset( $menu_order[ $a ] ) && isset( $menu_order[ $b ] ) ) {
if ( $menu_order[ $a ] == $menu_order[ $b ] ) {
return 0;
}
return ( $menu_order[ $a ] < $menu_order[ $b ] ) ? -1 : 1;
} else {
return ( $default_menu_order[ $a ] <= $default_menu_order[ $b ] ) ? -1 : 1;
}
}
usort( $menu, 'sort_menu' );
unset( $menu_order, $default_menu_order );
}
// Prevent adjacent separators.
$prev_menu_was_separator = false;
foreach ( $menu as $id => $data ) {
if ( false === stristr( $data[4], 'wp-menu-separator' ) ) {
// This item is not a separator, so falsey the toggler and do nothing.
$prev_menu_was_separator = false;
} else {
// The previous item was a separator, so unset this one.
if ( true === $prev_menu_was_separator ) {
unset( $menu[ $id ] );
}
// This item is a separator, so truthy the toggler and move on.
$prev_menu_was_separator = true;
}
}
unset( $id, $data, $prev_menu_was_separator );
// Remove the last menu item if it is a separator.
$last_menu_key = array_keys( $menu );
$last_menu_key = array_pop( $last_menu_key );
if ( ! empty( $menu ) && 'wp-menu-separator' === $menu[ $last_menu_key ][4] ) {
unset( $menu[ $last_menu_key ] );
}
unset( $last_menu_key );
if ( ! user_can_access_admin_page() ) {
/**
* Fires when access to an admin page is denied.
*
* @since 2.5.0
*/
do_action( 'admin_page_access_denied' );
wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
}
$menu = add_menu_classes( $menu );