WordPress/wp-admin/nav-menus.php

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<?php
/**
* WordPress Administration for Navigation Menus
* Interface functions
*
* @version 2.0.0
*
* @package WordPress
* @subpackage Administration
*/
/** Load WordPress Administration Bootstrap */
require_once( 'admin.php' );
// Load all the nav menu interface functions
require_once( ABSPATH . 'wp-admin/includes/nav-menu.php' );
// Permissions Check
if ( ! current_user_can('switch_themes') )
wp_die( __( 'Cheatin&#8217; uh?' ));
// Nav Menu CSS
wp_admin_css( 'nav-menu' );
// jQuery
wp_enqueue_script( 'jquery' );
wp_enqueue_script( 'jquery-ui-draggable' );
wp_enqueue_script( 'jquery-ui-droppable' );
wp_enqueue_script( 'jquery-ui-sortable' );
wp_enqueue_script( 'jquery-autocomplete' );
// Nav Menu functions
wp_enqueue_script( 'nav-menu' );
// Metaboxes
wp_enqueue_script( 'common' );
wp_enqueue_script( 'wp-lists' );
wp_enqueue_script( 'postbox' );
// Container for any messages displayed to the user
$messages = array();
// Container that stores the name of the active menu
$nav_menu_selected_title = '';
// The menu id of the current menu being edited
$nav_menu_selected_id = isset( $_REQUEST['menu'] ) ? (int) $_REQUEST['menu'] : 0;
// Allowed actions: add, update, delete
$action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'edit';
switch ( $action ) {
case 'add-menu-item':
if ( current_user_can( 'switch_themes' ) ) {
check_admin_referer( 'add-menu_item', 'menu-settings-column-nonce' );
if ( isset( $_REQUEST['menu-item'] ) ) {
wp_save_nav_menu_item( $nav_menu_selected_id, $_REQUEST['menu-item'] );
}
}
break;
case 'move-down-menu-item' :
// moving down a menu item is the same as moving up the next in order
check_admin_referer( 'move-menu_item' );
$menu_item_id = (int) $_REQUEST['menu-item'];
$next_item_id = 0;
if ( is_nav_menu_item( $menu_item_id ) ) {
$menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );
if ( ! is_wp_error( $menus ) ) {
foreach( (array) $menus as $menu_id ) {
$move_down_ordered_menu_items = (array) wp_get_nav_menu_items( $menu_id );
while ( $next = array_shift( $move_down_ordered_menu_items ) ) {
if ( isset( $next->ID ) && $next->ID == $menu_item_id ) {
break;
}
}
if ( $following = array_shift( $move_down_ordered_menu_items ) ) {
$next_item_id = (int) $following->ID;
}
}
}
}
// fall through to next case
case 'move-up-menu-item' :
check_admin_referer( 'move-menu_item' );
$menu_item_id = empty( $next_item_id ) ? (int) $_REQUEST['menu-item'] : $next_item_id;
if ( is_nav_menu_item( $menu_item_id ) ) {
$menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );
if ( ! is_wp_error( $menus ) ) {
foreach( (array) $menus as $menu_id ) {
$ordered_menu_items = wp_get_nav_menu_items( $menu_id );
$menu_item_data = get_post( $menu_item_id , ARRAY_A );
// setup the data we need in one pass through the array of menu items
$dbids_to_orders = array();
$orders_to_dbids = array();
$objectids_to_dbids = array();
$dbids_to_objectids = array();
foreach( (array) $ordered_menu_items as $ordered_menu_item_object ) {
if ( isset( $ordered_menu_item_object->ID ) ) {
if ( isset( $ordered_menu_item_object->menu_order ) ) {
$dbids_to_orders[$ordered_menu_item_object->ID] = $ordered_menu_item_object->menu_order;
$orders_to_dbids[$ordered_menu_item_object->menu_order] = $ordered_menu_item_object->ID;
}
$possible_object_id = (int) get_post_meta( $ordered_menu_item_object->ID, '_menu_item_object_id', true );
if ( ! empty( $possible_object_id ) ) {
$dbids_to_objectids[$ordered_menu_item_object->ID] = $possible_object_id;
$objectids_to_dbids[$possible_object_id] = $ordered_menu_item_object->ID;
}
}
}
// if this menu item is not first
if ( ! empty( $dbids_to_orders[$menu_item_id] ) && ! empty( $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] ) ) {
// if this menu item is a child of the previous
if (
! empty( $menu_item_data['post_parent'] ) &&
isset( $objectids_to_dbids[$menu_item_data['post_parent']] ) &&
isset( $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] ) &&
( $objectids_to_dbids[$menu_item_data['post_parent']] == $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] )
) {
$parent_db_id = $objectids_to_dbids[$menu_item_data['post_parent']];
$parent_data = get_post( $parent_db_id, ARRAY_A );
if ( ! is_wp_error( $parent_data ) ) {
// if there is something before the parent, make menu item a child of the parent's parent
if ( ! empty( $dbids_to_orders[$parent_db_id] ) && ! empty( $orders_to_dbids[$dbids_to_orders[$parent_db_id] - 1] ) ) {
$menu_item_data['post_parent'] = $parent_data['post_parent'];
// else there isn't something before the parent
} else {
$menu_item_data['post_parent'] = 0;
}
// set former parent's [menu_order] to that of menu-item's
$parent_data['menu_order'] = $parent_data['menu_order'] + 1;
// set menu-item's [menu_order] to that of former parent
$menu_item_data['menu_order'] = $menu_item_data['menu_order'] - 1;
// save changes
wp_update_post($menu_item_data);
wp_update_post($parent_data);
}
// else this menu item is not a child of the previous
} elseif ( isset($dbids_to_objectids[$orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1]] ) ) {
// just make it a child of the previous; keep the order
$menu_item_data['post_parent'] = (int) $dbids_to_objectids[$orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1]];
wp_update_post($menu_item_data);
}
}
}
}
}
break;
case 'delete-menu-item':
$menu_item_id = (int) $_REQUEST['menu-item'];
check_admin_referer( 'delete-menu_item_' . $menu_item_id );
if ( is_nav_menu_item( $menu_item_id ) ) {
if ( wp_delete_post( $menu_item_id, true ) ) {
$messages[] = '<div id="message" class="updated"><p>' . __('The menu item has been successfully deleted.') . '</p></div>';
}
}
break;
case 'delete':
check_admin_referer( 'delete-nav_menu-' . $nav_menu_selected_id );
if ( is_nav_menu( $nav_menu_selected_id ) ) {
$delete_nav_menu = wp_delete_nav_menu( $nav_menu_selected_id );
if ( is_wp_error($delete_nav_menu) ) {
$messages[] = '<div id="message" class="error"><p>' . $delete_nav_menu->get_error_message() . '</p></div>';
} else {
$messages[] = '<div id="message" class="updated"><p>' . __('The menu has been successfully deleted.') . '</p></div>';
$nav_menu_selected_id = 0; // Reset the selected menu
}
unset( $delete_nav_menu );
}
break;
case 'update':
check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );
// Add Menu
if ( 0 == $nav_menu_selected_id ) {
if ( current_theme_supports('nav-menus') || current_theme_supports('widgets') ) {
$new_menu_title = esc_html( $_POST['menu-name'] );
if ( $new_menu_title ) {
$_nav_menu_selected_id = wp_update_nav_menu_object( 0, array('menu-name' => $new_menu_title) );
if ( is_wp_error( $_nav_menu_selected_id ) ) {
$messages[] = '<div id="message" class="error"><p>' . $_nav_menu_selected_id->get_error_message() . '</p></div>';
} else {
$_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id );
$nav_menu_selected_id = $_nav_menu_selected_id;
$nav_menu_selected_title = $_menu_object->name;
$messages[] = '<div id="message" class="updated"><p>' . sprintf( __('The <strong>%s</strong> menu has been successfully created.'), $nav_menu_selected_title ) . '</p></div>';
}
} else {
$messages[] = '<div id="message" class="error"><p>' . __('Please enter a valid menu name.') . '</p></div>';
}
}
// update existing menu
} else {
$_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id );
if ( ! is_wp_error( $_menu_object ) ) {
$_nav_menu_selected_id = wp_update_nav_menu_object( $nav_menu_selected_id, array( 'menu-name' => $_POST['menu-name'] ) );
if ( is_wp_error( $_nav_menu_selected_id ) ) {
$_menu_object = $_nav_menu_selected_id;
$messages[] = '<div id="message" class="error"><p>' . $_nav_menu_selected_id->get_error_message() . '</p></div>';
} else {
$_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id );
$nav_menu_selected_title = $_menu_object->name;
}
}
// Update menu items
if ( ! is_wp_error( $_menu_object ) ) {
$menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array('orderby' => 'ID', 'output' => ARRAY_A, 'output_key' => 'ID') );
$post_fields = array( 'menu-item-db-id', 'menu-item-object-id', 'menu-item-object', 'menu-item-parent-id', 'menu-item-position', 'menu-item-type', 'menu-item-append', 'menu-item-title', 'menu-item-url', 'menu-item-description', 'menu-item-attr-title', 'menu-item-target', 'menu-item-classes', 'menu-item-xfn' );
// Loop through all the menu items' POST variables
if ( ! empty( $_POST['menu-item-db-id'] ) ) {
foreach( (array) $_POST['menu-item-db-id'] as $_key => $k ) {
// Menu item title can't be blank
if ( empty( $_POST['menu-item-title'][$_key] ) )
continue;
$args = array();
foreach ( $post_fields as $field )
$args[$field] = isset( $_POST[$field][$_key] ) ? $_POST[$field][$_key] : '';
$menu_item_db_id = wp_update_nav_menu_item( $nav_menu_selected_id, ( $_POST['menu-item-db-id'][$_key] != $_key ? 0 : $_key ), $args );
if ( is_wp_error( $menu_item_db_id ) )
$messages[] = '<div id="message" class="error"><p>' . $menu_item_db_id->get_error_message() . '</p></div>';
elseif ( isset( $menu_items[$menu_item_db_id] ) )
unset( $menu_items[$menu_item_db_id] );
}
}
// Remove menu items from the menu that weren't in $_POST
if ( ! empty( $menu_items ) ) {
foreach ( array_keys( $menu_items ) as $menu_item_id ) {
if ( is_nav_menu_item( $menu_item_id ) ) {
wp_delete_post( $menu_item_id );
}
}
}
do_action( 'wp_update_nav_menu', $nav_menu_selected_id );
$messages[] = '<div id="message" class="updated"><p>' . sprintf( __('The <strong>%s</strong> menu has been updated.'), $nav_menu_selected_title ) . '</p></div>';
unset( $menu_items );
}
}
break;
}
// Get all nav menus
$nav_menus = wp_get_nav_menus();
// Get recently edited nav menu
$recently_edited = (int) get_user_option( 'nav_menu_recently_edited' );
// If there was no recently edited menu, and $nav_menu_selected_id is a nav menu, update recently edited menu.
if ( !$recently_edited && is_nav_menu( $nav_menu_selected_id ) ) {
$recently_edited = $nav_menu_selected_id;
// Else if $nav_menu_selected_id is not a menu and not requesting that we create a new menu, but $recently_edited is a menu, grab that one.
} elseif ( 0 == $nav_menu_selected_id && ! isset( $_REQUEST['menu'] ) && is_nav_menu( $recently_edited ) ) {
$nav_menu_selected_id = $recently_edited;
// Else try to grab the first menu from the menus list
} elseif ( 0 == $nav_menu_selected_id && ! isset( $_REQUEST['menu'] ) && ! empty($nav_menus) ) {
$nav_menu_selected_id = $nav_menus[0]->term_id;
}
// Update the user's setting
if ( $nav_menu_selected_id != $recently_edited && is_nav_menu( $nav_menu_selected_id ) )
update_user_meta( $current_user->ID, 'nav_menu_recently_edited', $nav_menu_selected_id );
// If there's a menu, get its name.
if ( ! $nav_menu_selected_title && is_nav_menu( $nav_menu_selected_id ) ) {
$_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id );
$nav_menu_selected_title = ! is_wp_error( $_menu_object ) ? $_menu_object->name : '';
}
// The theme supports menus
if ( current_theme_supports('nav-menus') ) {
// Set up nav menu
wp_nav_menu_setup();
// The theme does not support menus but supports widgets
} elseif ( current_theme_supports('widgets') ) {
// Set up nav menu
wp_nav_menu_setup();
$messages[] = '<div id="message" class="error"><p>' . __('The current theme does not natively support menus, but you can use the &#8220;Navigation Menu&#8221; widget to add any menus you create here to the theme&#8217;s sidebar.') . '</p></div>';
// The theme supports neither menus nor widgets.
} else {
remove_meta_box( 'create-menu', 'nav-menus', 'side' );
$messages[] = '<div id="message" class="error"><p>' . __('The current theme does not support menus.') . '</p></div>';
}
wp_initial_nav_menu_meta_boxes();
// Get the admin header
require_once( 'admin-header.php' );
?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php esc_html_e('Menus'); ?></h2>
<?php
foreach( $messages as $message ) :
echo $message . "\n";
endforeach;
?>
<?php if ( current_theme_supports('nav-menus') || current_theme_supports('widgets') ) : ?>
<div id="nav-menus-frame">
<div id="menu-settings-column" class="metabox-holder">
<form id="nav-menu-meta" action="<?php echo admin_url( 'nav-menus.php' ); ?>" class="nav-menu-meta" method="post" enctype="multipart/form-data">
<input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
<input type="hidden" name="action" value="add-menu-item" />
<?php wp_nonce_field( 'add-menu_item', 'menu-settings-column-nonce' ); ?>
<?php do_meta_boxes( 'nav-menus', 'side', null ); ?>
</form>
</div><!-- /#menu-settings-column -->
<div id="menu-management-liquid">
<div id="menu-management">
<div id="select-nav-menu-container" class="hide-if-js">
<form id="select-nav-menu">
<strong><label for="select-nav-menu"><?php esc_html_e( 'Select Menu: ' ); ?></label></strong>
<select id="select-nav-menu" name="menu">
<?php foreach( (array) $nav_menus as $_nav_menu ) : ?>
<option value="<?php echo esc_attr($_nav_menu->term_id) ?>" <?php selected($nav_menu_selected_id, $_nav_menu->term_id); ?>>
<?php echo esc_html( $_nav_menu->name ); ?>
</option>
<?php endforeach; ?>
<option value="0"><?php esc_html_e('Add New Menu'); ?></option>
</select>
<input type="hidden" name="action" value="edit" />
<input class="button-secondary" name="select_menu" type="submit" value="<?php esc_attr_e('Select'); ?>" />
</form>
</div>
<div class="nav-tabs-wrapper">
<div class="nav-tabs">
<?php
foreach( (array) $nav_menus as $_nav_menu ) :
?><a href="<?php
echo add_query_arg(
array(
'action' => 'edit',
'menu' => $_nav_menu->term_id,
),
admin_url( 'nav-menus.php' )
);
?>" class="nav-tab<?php
if ( $nav_menu_selected_id == $_nav_menu->term_id )
echo ' nav-tab-active';
else
echo ' hide-if-no-js';
?>"><?php echo esc_html( $_nav_menu->name ); ?></a><?php
endforeach;
?><a href="<?php
echo add_query_arg(
array(
'action' => 'edit',
'menu' => 0,
),
admin_url( 'nav-menus.php' )
);
?>" class="nav-tab menu-add-new<?php
if ( 0 == $nav_menu_selected_id )
echo ' nav-tab-active';
?>"><?php printf( '<abbr title="%s">+</abbr>', esc_html__( 'Add menu' ) ); ?></a>
</div>
</div>
<div class="menu-edit">
<form id="update-nav-menu" action="<?php echo admin_url( 'nav-menus.php' ); ?>" method="post" enctype="multipart/form-data">
<div id="nav-menu-header">
<div id="submitpost" class="submitbox">
<div class="major-publishing-actions">
<label class="menu-name-label howto open-label" for="menu-name">
<span><?php _e('Menu Name'); ?></span>
<input name="menu-name" type="text" class="menu-name regular-text menu-item-textbox input-with-default-title" title="Enter menu name here." value="<?php echo esc_attr( $nav_menu_selected_title ); ?>" />
<br class="clear" />
</label>
<div class="publishing-action">
<input class="button-primary" name="save_menu" type="submit" value="<?php empty($nav_menu_selected_id) ? esc_attr_e('Create Menu') : esc_attr_e('Save Menu'); ?>" />
</div><!--END .publishing-action-->
<?php if ( ! empty( $nav_menu_selected_id ) ) : ?>
<div class="delete-action">
<a class="submitdelete deletion menu-delete" href="<?php echo wp_nonce_url( admin_url('nav-menus.php?action=delete&amp;menu=' . $nav_menu_selected_id), 'delete-nav_menu-' . $nav_menu_selected_id ); ?>"><?php _e('Delete Menu'); ?></a>
</div><!--END .delete-action-->
<?php endif; ?>
<br class="clear" />
</div><!--END .major-publishing-actions-->
</div><!--END #submitpost .submitbox-->
<?php wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false ); ?>
<?php wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false ); ?>
<?php wp_nonce_field( 'update-nav_menu', 'update-nav-menu-nonce' ); ?>
<input type="hidden" name="action" value="update" />
<input type="hidden" name="menu" id="menu" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
</div><!--END #nav-menu-header-->
<div id="post-body">
<div id="post-body-content">
<?php if ( is_nav_menu( $nav_menu_selected_id ) && ( current_theme_supports('nav-menus') || current_theme_supports('widgets') ) ) : ?>
<ul class="menu" id="menu-to-edit">
<?php
$edit_markup = wp_get_nav_menu_to_edit( $nav_menu_selected_id );
if ( ! is_wp_error( $edit_markup ) ) {
echo $edit_markup;
}
?>
</ul>
<?php elseif ( empty($nav_menu_selected_id) ):
echo '<div class="post-body-plain">';
echo '<p>' . __('To create a custom menu, give it a name above and click Create Menu. Then choose items like pages, categories or custom links from the left column to add to this menu.') . '</p>';
echo '<p>' . __('After you have added your items, drag and drop to put them in the order you want. You can also click each item to reveal additional configuration options.') . '</p>';
echo '<p>' . __('When you have finished building your custom menu, make sure you click the Save Menu button.') . '</p>';
echo '<p>' . __('You can create multiple menus. You can also display custom menus using the new "Custom Menu" widget.') . '</p>';
echo '<p>' . sprintf( __('For more information on this feature, see the <a href="%s">Custom Menus</a> article in the Codex.'), _x('http://codex.wordpress.org/Custom_Menus', 'Custom Menus codex page') ) . '</p>';
echo '</div>';
endif; ?>
<br class="clear" />
</div><!-- /#post-body-content-->
</div><!--- /#post-body -->
</form><!--/#update-nav-menu-->
</div><!-- /.menu-edit -->
</div><!-- /#menu-management -->
</div><!-- /#menu-management-liquid -->
</div><!-- /#nav-menus-frame-->
<?php endif; // if menus supported in current theme ?>
</div><!-- /.wrap-->
<?php include( 'admin-footer.php' ); ?>