CaffGeek/MBACNationals

View on GitHub
Web.Admin/2014/wordpress/wp-admin/includes/nav-menu.php

Summary

Maintainability
F
1 wk
Test Coverage
<?php

/**
 * Create HTML list of nav menu input items.
 *
 * @package WordPress
 * @since 3.0.0
 * @uses Walker_Nav_Menu
 */
class Walker_Nav_Menu_Edit extends Walker_Nav_Menu {
    /**
     * Starts the list before the elements are added.
     *
     * @see Walker_Nav_Menu::start_lvl()
     *
     * @since 3.0.0
     *
     * @param string $output Passed by reference.
     * @param int    $depth  Depth of menu item. Used for padding.
     * @param array  $args   Not used.
     */
    function start_lvl( &$output, $depth = 0, $args = array() ) {}

    /**
     * Ends the list of after the elements are added.
     *
     * @see Walker_Nav_Menu::end_lvl()
     *
     * @since 3.0.0
     *
     * @param string $output Passed by reference.
     * @param int    $depth  Depth of menu item. Used for padding.
     * @param array  $args   Not used.
     */
    function end_lvl( &$output, $depth = 0, $args = array() ) {}

    /**
     * Start the element output.
     *
     * @see Walker_Nav_Menu::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 array  $args   Not used.
     * @param int    $id     Not used.
     */
    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        global $_wp_nav_menu_max_depth;
        $_wp_nav_menu_max_depth = $depth > $_wp_nav_menu_max_depth ? $depth : $_wp_nav_menu_max_depth;

        ob_start();
        $item_id = esc_attr( $item->ID );
        $removed_args = array(
            'action',
            'customlink-tab',
            'edit-menu-item',
            'menu-item',
            'page-tab',
            '_wpnonce',
        );

        $original_title = '';
        if ( 'taxonomy' == $item->type ) {
            $original_title = get_term_field( 'name', $item->object_id, $item->object, 'raw' );
            if ( is_wp_error( $original_title ) )
                $original_title = false;
        } elseif ( 'post_type' == $item->type ) {
            $original_object = get_post( $item->object_id );
            $original_title = get_the_title( $original_object->ID );
        }

        $classes = array(
            'menu-item menu-item-depth-' . $depth,
            'menu-item-' . esc_attr( $item->object ),
            'menu-item-edit-' . ( ( isset( $_GET['edit-menu-item'] ) && $item_id == $_GET['edit-menu-item'] ) ? 'active' : 'inactive'),
        );

        $title = $item->title;

        if ( ! empty( $item->_invalid ) ) {
            $classes[] = 'menu-item-invalid';
            /* translators: %s: title of menu item which is invalid */
            $title = sprintf( __( '%s (Invalid)' ), $item->title );
        } elseif ( isset( $item->post_status ) && 'draft' == $item->post_status ) {
            $classes[] = 'pending';
            /* translators: %s: title of menu item in draft status */
            $title = sprintf( __('%s (Pending)'), $item->title );
        }

        $title = ( ! isset( $item->label ) || '' == $item->label ) ? $title : $item->label;

        $submenu_text = '';
        if ( 0 == $depth )
            $submenu_text = 'style="display: none;"';

        ?>
        <li id="menu-item-<?php echo $item_id; ?>" class="<?php echo implode(' ', $classes ); ?>">
            <dl class="menu-item-bar">
                <dt class="menu-item-handle">
                    <span class="item-title"><span class="menu-item-title"><?php echo esc_html( $title ); ?></span> <span class="is-submenu" <?php echo $submenu_text; ?>><?php _e( 'sub item' ); ?></span></span>
                    <span class="item-controls">
                        <span class="item-type"><?php echo esc_html( $item->type_label ); ?></span>
                        <span class="item-order hide-if-js">
                            <a href="<?php
                                echo wp_nonce_url(
                                    add_query_arg(
                                        array(
                                            'action' => 'move-up-menu-item',
                                            'menu-item' => $item_id,
                                        ),
                                        remove_query_arg($removed_args, admin_url( 'nav-menus.php' ) )
                                    ),
                                    'move-menu_item'
                                );
                            ?>" class="item-move-up"><abbr title="<?php esc_attr_e('Move up'); ?>">&#8593;</abbr></a>
                            |
                            <a href="<?php
                                echo wp_nonce_url(
                                    add_query_arg(
                                        array(
                                            'action' => 'move-down-menu-item',
                                            'menu-item' => $item_id,
                                        ),
                                        remove_query_arg($removed_args, admin_url( 'nav-menus.php' ) )
                                    ),
                                    'move-menu_item'
                                );
                            ?>" class="item-move-down"><abbr title="<?php esc_attr_e('Move down'); ?>">&#8595;</abbr></a>
                        </span>
                        <a class="item-edit" id="edit-<?php echo $item_id; ?>" title="<?php esc_attr_e('Edit Menu Item'); ?>" href="<?php
                            echo ( isset( $_GET['edit-menu-item'] ) && $item_id == $_GET['edit-menu-item'] ) ? admin_url( 'nav-menus.php' ) : add_query_arg( 'edit-menu-item', $item_id, remove_query_arg( $removed_args, admin_url( 'nav-menus.php#menu-item-settings-' . $item_id ) ) );
                        ?>"><?php _e( 'Edit Menu Item' ); ?></a>
                    </span>
                </dt>
            </dl>

            <div class="menu-item-settings" id="menu-item-settings-<?php echo $item_id; ?>">
                <?php if( 'custom' == $item->type ) : ?>
                    <p class="field-url description description-wide">
                        <label for="edit-menu-item-url-<?php echo $item_id; ?>">
                            <?php _e( 'URL' ); ?><br />
                            <input type="text" id="edit-menu-item-url-<?php echo $item_id; ?>" class="widefat code edit-menu-item-url" name="menu-item-url[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->url ); ?>" />
                        </label>
                    </p>
                <?php endif; ?>
                <p class="description description-thin">
                    <label for="edit-menu-item-title-<?php echo $item_id; ?>">
                        <?php _e( 'Navigation Label' ); ?><br />
                        <input type="text" id="edit-menu-item-title-<?php echo $item_id; ?>" class="widefat edit-menu-item-title" name="menu-item-title[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->title ); ?>" />
                    </label>
                </p>
                <p class="description description-thin">
                    <label for="edit-menu-item-attr-title-<?php echo $item_id; ?>">
                        <?php _e( 'Title Attribute' ); ?><br />
                        <input type="text" id="edit-menu-item-attr-title-<?php echo $item_id; ?>" class="widefat edit-menu-item-attr-title" name="menu-item-attr-title[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->post_excerpt ); ?>" />
                    </label>
                </p>
                <p class="field-link-target description">
                    <label for="edit-menu-item-target-<?php echo $item_id; ?>">
                        <input type="checkbox" id="edit-menu-item-target-<?php echo $item_id; ?>" value="_blank" name="menu-item-target[<?php echo $item_id; ?>]"<?php checked( $item->target, '_blank' ); ?> />
                        <?php _e( 'Open link in a new window/tab' ); ?>
                    </label>
                </p>
                <p class="field-css-classes description description-thin">
                    <label for="edit-menu-item-classes-<?php echo $item_id; ?>">
                        <?php _e( 'CSS Classes (optional)' ); ?><br />
                        <input type="text" id="edit-menu-item-classes-<?php echo $item_id; ?>" class="widefat code edit-menu-item-classes" name="menu-item-classes[<?php echo $item_id; ?>]" value="<?php echo esc_attr( implode(' ', $item->classes ) ); ?>" />
                    </label>
                </p>
                <p class="field-xfn description description-thin">
                    <label for="edit-menu-item-xfn-<?php echo $item_id; ?>">
                        <?php _e( 'Link Relationship (XFN)' ); ?><br />
                        <input type="text" id="edit-menu-item-xfn-<?php echo $item_id; ?>" class="widefat code edit-menu-item-xfn" name="menu-item-xfn[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->xfn ); ?>" />
                    </label>
                </p>
                <p class="field-description description description-wide">
                    <label for="edit-menu-item-description-<?php echo $item_id; ?>">
                        <?php _e( 'Description' ); ?><br />
                        <textarea id="edit-menu-item-description-<?php echo $item_id; ?>" class="widefat edit-menu-item-description" rows="3" cols="20" name="menu-item-description[<?php echo $item_id; ?>]"><?php echo esc_html( $item->description ); // textarea_escaped ?></textarea>
                        <span class="description"><?php _e('The description will be displayed in the menu if the current theme supports it.'); ?></span>
                    </label>
                </p>

                <p class="field-move hide-if-no-js description description-wide">
                    <label>
                        <span><?php _e( 'Move' ); ?></span>
                        <a href="#" class="menus-move-up"><?php _e( 'Up one' ); ?></a>
                        <a href="#" class="menus-move-down"><?php _e( 'Down one' ); ?></a>
                        <a href="#" class="menus-move-left"></a>
                        <a href="#" class="menus-move-right"></a>
                        <a href="#" class="menus-move-top"><?php _e( 'To the top' ); ?></a>
                    </label>
                </p>

                <div class="menu-item-actions description-wide submitbox">
                    <?php if( 'custom' != $item->type && $original_title !== false ) : ?>
                        <p class="link-to-original">
                            <?php printf( __('Original: %s'), '<a href="' . esc_attr( $item->url ) . '">' . esc_html( $original_title ) . '</a>' ); ?>
                        </p>
                    <?php endif; ?>
                    <a class="item-delete submitdelete deletion" id="delete-<?php echo $item_id; ?>" href="<?php
                    echo wp_nonce_url(
                        add_query_arg(
                            array(
                                'action' => 'delete-menu-item',
                                'menu-item' => $item_id,
                            ),
                            admin_url( 'nav-menus.php' )
                        ),
                        'delete-menu_item_' . $item_id
                    ); ?>"><?php _e( 'Remove' ); ?></a> <span class="meta-sep hide-if-no-js"> | </span> <a class="item-cancel submitcancel hide-if-no-js" id="cancel-<?php echo $item_id; ?>" href="<?php echo esc_url( add_query_arg( array( 'edit-menu-item' => $item_id, 'cancel' => time() ), admin_url( 'nav-menus.php' ) ) );
                        ?>#menu-item-settings-<?php echo $item_id; ?>"><?php _e('Cancel'); ?></a>
                </div>

                <input class="menu-item-data-db-id" type="hidden" name="menu-item-db-id[<?php echo $item_id; ?>]" value="<?php echo $item_id; ?>" />
                <input class="menu-item-data-object-id" type="hidden" name="menu-item-object-id[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->object_id ); ?>" />
                <input class="menu-item-data-object" type="hidden" name="menu-item-object[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->object ); ?>" />
                <input class="menu-item-data-parent-id" type="hidden" name="menu-item-parent-id[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->menu_item_parent ); ?>" />
                <input class="menu-item-data-position" type="hidden" name="menu-item-position[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->menu_order ); ?>" />
                <input class="menu-item-data-type" type="hidden" name="menu-item-type[<?php echo $item_id; ?>]" value="<?php echo esc_attr( $item->type ); ?>" />
            </div><!-- .menu-item-settings-->
            <ul class="menu-item-transport"></ul>
        <?php
        $output .= ob_get_clean();
    }

} // Walker_Nav_Menu_Edit

/**
 * Create HTML list of nav menu input items.
 *
 * @since 3.0.0
 * @uses Walker_Nav_Menu
 */
class Walker_Nav_Menu_Checklist extends Walker_Nav_Menu {
    function __construct( $fields = false ) {
        if ( $fields ) {
            $this->db_fields = $fields;
        }
    }

    /**
     * Starts the list before the elements are added.
     *
     * @see Walker_Nav_Menu::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.
     * @param array  $args   Not used.
     */
    function start_lvl( &$output, $depth = 0, $args = array() ) {
        $indent = str_repeat( "\t", $depth );
        $output .= "\n$indent<ul class='children'>\n";
    }

    /**
     * Ends the list of after the elements are added.
     *
     * @see Walker_Nav_Menu::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.
     * @param array  $args   Not used.
     */
    function end_lvl( &$output, $depth = 0, $args = array() ) {
        $indent = str_repeat( "\t", $depth );
        $output .= "\n$indent</ul>";
    }

    /**
     * Start the element output.
     *
     * @see Walker_Nav_Menu::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 array  $args   Not used.
     * @param int    $id     Not used.
     */
    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        global $_nav_menu_placeholder;

        $_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
        $possible_object_id = isset( $item->post_type ) && 'nav_menu_item' == $item->post_type ? $item->object_id : $_nav_menu_placeholder;
        $possible_db_id = ( ! empty( $item->ID ) ) && ( 0 < $possible_object_id ) ? (int) $item->ID : 0;

        $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

        $output .= $indent . '<li>';
        $output .= '<label class="menu-item-title">';
        $output .= '<input type="checkbox" class="menu-item-checkbox';

        if ( ! empty( $item->front_or_home ) )
            $output .= ' add-to-top';

        $output .= '" name="menu-item[' . $possible_object_id . '][menu-item-object-id]" value="'. esc_attr( $item->object_id ) .'" /> ';

        if ( ! empty( $item->label ) ) {
            $title = $item->label;
        } elseif ( isset( $item->post_type ) ) {
            /** This filter is documented in wp-includes/post-template.php */
            $title = apply_filters( 'the_title', $item->post_title, $item->ID );
            if ( ! empty( $item->front_or_home ) && _x( 'Home', 'nav menu home label' ) !== $title )
                $title = sprintf( _x( 'Home: %s', 'nav menu front page title' ), $title );
        }

        $output .= isset( $title ) ? esc_html( $title ) : esc_html( $item->title );
         $output .= '</label>';

        // Menu item hidden fields
        $output .= '<input type="hidden" class="menu-item-db-id" name="menu-item[' . $possible_object_id . '][menu-item-db-id]" value="' . $possible_db_id . '" />';
        $output .= '<input type="hidden" class="menu-item-object" name="menu-item[' . $possible_object_id . '][menu-item-object]" value="'. esc_attr( $item->object ) .'" />';
        $output .= '<input type="hidden" class="menu-item-parent-id" name="menu-item[' . $possible_object_id . '][menu-item-parent-id]" value="'. esc_attr( $item->menu_item_parent ) .'" />';
        $output .= '<input type="hidden" class="menu-item-type" name="menu-item[' . $possible_object_id . '][menu-item-type]" value="'. esc_attr( $item->type ) .'" />';
        $output .= '<input type="hidden" class="menu-item-title" name="menu-item[' . $possible_object_id . '][menu-item-title]" value="'. esc_attr( $item->title ) .'" />';
        $output .= '<input type="hidden" class="menu-item-url" name="menu-item[' . $possible_object_id . '][menu-item-url]" value="'. esc_attr( $item->url ) .'" />';
        $output .= '<input type="hidden" class="menu-item-target" name="menu-item[' . $possible_object_id . '][menu-item-target]" value="'. esc_attr( $item->target ) .'" />';
        $output .= '<input type="hidden" class="menu-item-attr_title" name="menu-item[' . $possible_object_id . '][menu-item-attr_title]" value="'. esc_attr( $item->attr_title ) .'" />';
        $output .= '<input type="hidden" class="menu-item-classes" name="menu-item[' . $possible_object_id . '][menu-item-classes]" value="'. esc_attr( implode( ' ', $item->classes ) ) .'" />';
        $output .= '<input type="hidden" class="menu-item-xfn" name="menu-item[' . $possible_object_id . '][menu-item-xfn]" value="'. esc_attr( $item->xfn ) .'" />';
    }

} // Walker_Nav_Menu_Checklist

/**
 * Prints the appropriate response to a menu quick search.
 *
 * @since 3.0.0
 *
 * @param array $request The unsanitized request values.
 */
function _wp_ajax_menu_quick_search( $request = array() ) {
    $args = array();
    $type = isset( $request['type'] ) ? $request['type'] : '';
    $object_type = isset( $request['object_type'] ) ? $request['object_type'] : '';
    $query = isset( $request['q'] ) ? $request['q'] : '';
    $response_format = isset( $request['response-format'] ) && in_array( $request['response-format'], array( 'json', 'markup' ) ) ? $request['response-format'] : 'json';

    if ( 'markup' == $response_format ) {
        $args['walker'] = new Walker_Nav_Menu_Checklist;
    }

    if ( 'get-post-item' == $type ) {
        if ( post_type_exists( $object_type ) ) {
            if ( isset( $request['ID'] ) ) {
                $object_id = (int) $request['ID'];
                if ( 'markup' == $response_format ) {
                    echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $object_id ) ) ), 0, (object) $args );
                } elseif ( 'json' == $response_format ) {
                    $post_obj = get_post( $object_id );
                    echo json_encode(
                        array(
                            'ID' => $object_id,
                            'post_title' => get_the_title( $object_id ),
                            'post_type' => get_post_type( $object_id ),
                        )
                    );
                    echo "\n";
                }
            }
        } elseif ( taxonomy_exists( $object_type ) ) {
            if ( isset( $request['ID'] ) ) {
                $object_id = (int) $request['ID'];
                if ( 'markup' == $response_format ) {
                    echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_term( $object_id, $object_type ) ) ), 0, (object) $args );
                } elseif ( 'json' == $response_format ) {
                    $post_obj = get_term( $object_id, $object_type );
                    echo json_encode(
                        array(
                            'ID' => $object_id,
                            'post_title' => $post_obj->name,
                            'post_type' => $object_type,
                        )
                    );
                    echo "\n";
                }
            }

        }

    } elseif ( preg_match('/quick-search-(posttype|taxonomy)-([a-zA-Z_-]*\b)/', $type, $matches) ) {
        if ( 'posttype' == $matches[1] && get_post_type_object( $matches[2] ) ) {
            query_posts(array(
                'posts_per_page' => 10,
                'post_type' => $matches[2],
                's' => $query,
            ));
            if ( ! have_posts() )
                return;
            while ( have_posts() ) {
                the_post();
                if ( 'markup' == $response_format ) {
                    $var_by_ref = get_the_ID();
                    echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( get_post( $var_by_ref ) ) ), 0, (object) $args );
                } elseif ( 'json' == $response_format ) {
                    echo json_encode(
                        array(
                            'ID' => get_the_ID(),
                            'post_title' => get_the_title(),
                            'post_type' => get_post_type(),
                        )
                    );
                    echo "\n";
                }
            }
        } elseif ( 'taxonomy' == $matches[1] ) {
            $terms = get_terms( $matches[2], array(
                'name__like' => $query,
                'number' => 10,
            ));
            if ( empty( $terms ) || is_wp_error( $terms ) )
                return;
            foreach( (array) $terms as $term ) {
                if ( 'markup' == $response_format ) {
                    echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', array( $term ) ), 0, (object) $args );
                } elseif ( 'json' == $response_format ) {
                    echo json_encode(
                        array(
                            'ID' => $term->term_id,
                            'post_title' => $term->name,
                            'post_type' => $matches[2],
                        )
                    );
                    echo "\n";
                }
            }
        }
    }
}

/**
 * Register nav menu metaboxes and advanced menu items
 *
 * @since 3.0.0
 **/
function wp_nav_menu_setup() {
    // Register meta boxes
    wp_nav_menu_post_type_meta_boxes();
    add_meta_box( 'add-custom-links', __( 'Links' ), 'wp_nav_menu_item_link_meta_box', 'nav-menus', 'side', 'default' );
    wp_nav_menu_taxonomy_meta_boxes();

    // Register advanced menu items (columns)
    add_filter( 'manage_nav-menus_columns', 'wp_nav_menu_manage_columns' );

    // If first time editing, disable advanced items by default.
    if( false === get_user_option( 'managenav-menuscolumnshidden' ) ) {
        $user = wp_get_current_user();
        update_user_option($user->ID, 'managenav-menuscolumnshidden',
            array( 0 => 'link-target', 1 => 'css-classes', 2 => 'xfn', 3 => 'description', ),
            true);
    }
}

/**
 * Limit the amount of meta boxes to just links, pages and cats for first time users.
 *
 * @since 3.0.0
 **/
function wp_initial_nav_menu_meta_boxes() {
    global $wp_meta_boxes;

    if ( get_user_option( 'metaboxhidden_nav-menus' ) !== false || ! is_array($wp_meta_boxes) )
        return;

    $initial_meta_boxes = array( 'nav-menu-theme-locations', 'add-page', 'add-custom-links', 'add-category' );
    $hidden_meta_boxes = array();

    foreach ( array_keys($wp_meta_boxes['nav-menus']) as $context ) {
        foreach ( array_keys($wp_meta_boxes['nav-menus'][$context]) as $priority ) {
            foreach ( $wp_meta_boxes['nav-menus'][$context][$priority] as $box ) {
                if ( in_array( $box['id'], $initial_meta_boxes ) ) {
                    unset( $box['id'] );
                } else {
                    $hidden_meta_boxes[] = $box['id'];
                }
            }
        }
    }

    $user = wp_get_current_user();
    update_user_option( $user->ID, 'metaboxhidden_nav-menus', $hidden_meta_boxes, true );
}

/**
 * Creates metaboxes for any post type menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_post_type_meta_boxes() {
    $post_types = get_post_types( array( 'show_in_nav_menus' => true ), 'object' );

    if ( ! $post_types )
        return;

    foreach ( $post_types as $post_type ) {
        /**
         * Filter whether a menu items meta box will be added for the current post type.
         *
         * If a falsey value is returned instead of a post type object,
         * the post type menu items meta box will not be added.
         *
         * @since 3.0.0
         *
         * @param object $post_type The post type object to be used as a meta box.
         */
        $post_type = apply_filters( 'nav_menu_meta_box_object', $post_type );
        if ( $post_type ) {
            $id = $post_type->name;
            // give pages a higher priority
            $priority = ( 'page' == $post_type->name ? 'core' : 'default' );
            add_meta_box( "add-{$id}", $post_type->labels->name, 'wp_nav_menu_item_post_type_meta_box', 'nav-menus', 'side', $priority, $post_type );
        }
    }
}

/**
 * Creates metaboxes for any taxonomy menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_taxonomy_meta_boxes() {
    $taxonomies = get_taxonomies( array( 'show_in_nav_menus' => true ), 'object' );

    if ( !$taxonomies )
        return;

    foreach ( $taxonomies as $tax ) {
        /**
         * Filter whether a menu items meta box will be added for the current taxonomy.
         *
         * If a falsey value is returned instead of a taxonomy object,
         * the taxonomy menu items meta box will not be added.
         *
         * @since 3.0.0
         *
         * @param object $tax The taxonomy object to be used as a meta box.
         */
        $tax = apply_filters( 'nav_menu_meta_box_object', $tax );
        if ( $tax ) {
            $id = $tax->name;
            add_meta_box( "add-{$id}", $tax->labels->name, 'wp_nav_menu_item_taxonomy_meta_box', 'nav-menus', 'side', 'default', $tax );
        }
    }
}

/**
 * Check whether to disable the Menu Locations meta box submit button
 *
 * @since 3.6.0
 *
 * @uses global $one_theme_location_no_menus to determine if no menus exist
 * @uses disabled() to output the disabled attribute in $other_attributes param in submit_button()
 *
 * @param int|string $nav_menu_selected_id (id, name or slug) of the currently-selected menu
 * @return string Disabled attribute if at least one menu exists, false if not
*/
function wp_nav_menu_disabled_check( $nav_menu_selected_id ) {
    global $one_theme_location_no_menus;

    if ( $one_theme_location_no_menus )
        return false;

    return disabled( $nav_menu_selected_id, 0 );
}

/**
 * Displays a metabox for the custom links menu item.
 *
 * @since 3.0.0
 */
function wp_nav_menu_item_link_meta_box() {
    global $_nav_menu_placeholder, $nav_menu_selected_id;

    $_nav_menu_placeholder = 0 > $_nav_menu_placeholder ? $_nav_menu_placeholder - 1 : -1;

    ?>
    <div class="customlinkdiv" id="customlinkdiv">
        <input type="hidden" value="custom" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-type]" />
        <p id="menu-item-url-wrap">
            <label class="howto" for="custom-menu-item-url">
                <span><?php _e('URL'); ?></span>
                <input id="custom-menu-item-url" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-url]" type="text" class="code menu-item-textbox" value="http://" />
            </label>
        </p>

        <p id="menu-item-name-wrap">
            <label class="howto" for="custom-menu-item-name">
                <span><?php _e( 'Link Text' ); ?></span>
                <input id="custom-menu-item-name" name="menu-item[<?php echo $_nav_menu_placeholder; ?>][menu-item-title]" type="text" class="regular-text menu-item-textbox input-with-default-title" title="<?php esc_attr_e('Menu Item'); ?>" />
            </label>
        </p>

        <p class="button-controls">
            <span class="add-to-menu">
                <input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e('Add to Menu'); ?>" name="add-custom-menu-item" id="submit-customlinkdiv" />
                <span class="spinner"></span>
            </span>
        </p>

    </div><!-- /.customlinkdiv -->
    <?php
}

/**
 * Displays a metabox for a post type menu item.
 *
 * @since 3.0.0
 *
 * @param string $object Not used.
 * @param string $post_type The post type object.
 */
function wp_nav_menu_item_post_type_meta_box( $object, $post_type ) {
    global $_nav_menu_placeholder, $nav_menu_selected_id;

    $post_type_name = $post_type['args']->name;

    // paginate browsing for large numbers of post objects
    $per_page = 50;
    $pagenum = isset( $_REQUEST[$post_type_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
    $offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

    $args = array(
        'offset' => $offset,
        'order' => 'ASC',
        'orderby' => 'title',
        'posts_per_page' => $per_page,
        'post_type' => $post_type_name,
        'suppress_filters' => true,
        'update_post_term_cache' => false,
        'update_post_meta_cache' => false
    );

    if ( isset( $post_type['args']->_default_query ) )
        $args = array_merge($args, (array) $post_type['args']->_default_query );

    // @todo transient caching of these results with proper invalidation on updating of a post of this type
    $get_posts = new WP_Query;
    $posts = $get_posts->query( $args );
    if ( ! $get_posts->post_count ) {
        echo '<p>' . __( 'No items.' ) . '</p>';
        return;
    }

    $post_type_object = get_post_type_object($post_type_name);

    $num_pages = $get_posts->max_num_pages;

    $page_links = paginate_links( array(
        'base' => add_query_arg(
            array(
                $post_type_name . '-tab' => 'all',
                'paged' => '%#%',
                'item-type' => 'post_type',
                'item-object' => $post_type_name,
            )
        ),
        'format' => '',
        'prev_text' => __('&laquo;'),
        'next_text' => __('&raquo;'),
        'total' => $num_pages,
        'current' => $pagenum
    ));

    if ( !$posts )
        $error = '<li id="error">'. $post_type['args']->labels->not_found .'</li>';

    $db_fields = false;
    if ( is_post_type_hierarchical( $post_type_name ) ) {
        $db_fields = array( 'parent' => 'post_parent', 'id' => 'ID' );
    }

    $walker = new Walker_Nav_Menu_Checklist( $db_fields );

    $current_tab = 'most-recent';
    if ( isset( $_REQUEST[$post_type_name . '-tab'] ) && in_array( $_REQUEST[$post_type_name . '-tab'], array('all', 'search') ) ) {
        $current_tab = $_REQUEST[$post_type_name . '-tab'];
    }

    if ( ! empty( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
        $current_tab = 'search';
    }

    $removed_args = array(
        'action',
        'customlink-tab',
        'edit-menu-item',
        'menu-item',
        'page-tab',
        '_wpnonce',
    );

    ?>
    <div id="posttype-<?php echo $post_type_name; ?>" class="posttypediv">
        <ul id="posttype-<?php echo $post_type_name; ?>-tabs" class="posttype-tabs add-menu-item-tabs">
            <li <?php echo ( 'most-recent' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-most-recent" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'most-recent', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent">
                    <?php _e( 'Most Recent' ); ?>
                </a>
            </li>
            <li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="<?php echo esc_attr( $post_type_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#<?php echo $post_type_name; ?>-all">
                    <?php _e( 'View All' ); ?>
                </a>
            </li>
            <li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="tabs-panel-posttype-<?php echo esc_attr( $post_type_name ); ?>-search" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($post_type_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
                    <?php _e( 'Search'); ?>
                </a>
            </li>
        </ul><!-- .posttype-tabs -->

        <div id="tabs-panel-posttype-<?php echo $post_type_name; ?>-most-recent" class="tabs-panel <?php
            echo ( 'most-recent' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>">
            <ul id="<?php echo $post_type_name; ?>checklist-most-recent" class="categorychecklist form-no-clear">
                <?php
                $recent_args = array_merge( $args, array( 'orderby' => 'post_date', 'order' => 'DESC', 'posts_per_page' => 15 ) );
                $most_recent = $get_posts->query( $recent_args );
                $args['walker'] = $walker;
                echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $most_recent), 0, (object) $args );
                ?>
            </ul>
        </div><!-- /.tabs-panel -->

        <div class="tabs-panel <?php
            echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>" id="tabs-panel-posttype-<?php echo $post_type_name; ?>-search">
            <?php
            if ( isset( $_REQUEST['quick-search-posttype-' . $post_type_name] ) ) {
                $searched = esc_attr( $_REQUEST['quick-search-posttype-' . $post_type_name] );
                $search_results = get_posts( array( 's' => $searched, 'post_type' => $post_type_name, 'fields' => 'all', 'order' => 'DESC', ) );
            } else {
                $searched = '';
                $search_results = array();
            }
            ?>
            <p class="quick-search-wrap">
                <input type="search" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" />
                <span class="spinner"></span>
                <?php submit_button( __( 'Search' ), 'button-small quick-search-submit button-secondary hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-posttype-' . $post_type_name ) ); ?>
            </p>

            <ul id="<?php echo $post_type_name; ?>-search-checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
            <?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
                <?php
                $args['walker'] = $walker;
                echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
                ?>
            <?php elseif ( is_wp_error( $search_results ) ) : ?>
                <li><?php echo $search_results->get_error_message(); ?></li>
            <?php elseif ( ! empty( $searched ) ) : ?>
                <li><?php _e('No results found.'); ?></li>
            <?php endif; ?>
            </ul>
        </div><!-- /.tabs-panel -->

        <div id="<?php echo $post_type_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
            echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>">
            <?php if ( ! empty( $page_links ) ) : ?>
                <div class="add-menu-item-pagelinks">
                    <?php echo $page_links; ?>
                </div>
            <?php endif; ?>
            <ul id="<?php echo $post_type_name; ?>checklist" data-wp-lists="list:<?php echo $post_type_name?>" class="categorychecklist form-no-clear">
                <?php
                $args['walker'] = $walker;

                // if we're dealing with pages, let's put a checkbox for the front page at the top of the list
                if ( 'page' == $post_type_name ) {
                    $front_page = 'page' == get_option('show_on_front') ? (int) get_option( 'page_on_front' ) : 0;
                    if ( ! empty( $front_page ) ) {
                        $front_page_obj = get_post( $front_page );
                        $front_page_obj->front_or_home = true;
                        array_unshift( $posts, $front_page_obj );
                    } else {
                        $_nav_menu_placeholder = ( 0 > $_nav_menu_placeholder ) ? intval($_nav_menu_placeholder) - 1 : -1;
                        array_unshift( $posts, (object) array(
                            'front_or_home' => true,
                            'ID' => 0,
                            'object_id' => $_nav_menu_placeholder,
                            'post_content' => '',
                            'post_excerpt' => '',
                            'post_parent' => '',
                            'post_title' => _x('Home', 'nav menu home label'),
                            'post_type' => 'nav_menu_item',
                            'type' => 'custom',
                            'url' => home_url('/'),
                        ) );
                    }
                }

                /**
                 * Filter the posts displayed in the 'View All' tab of the current
                 * post type's menu items meta box.
                 *
                 * The dynamic portion of the hook name, $post_type_name,
                 * refers to the slug of the current post type.
                 *
                 * @since 3.2.0
                 *
                 * @see WP_Query::query()
                 *
                 * @param array  $posts     The posts for the current post type.
                 * @param array  $args      An array of WP_Query arguments.
                 * @param object $post_type The current post type object for this menu item meta box.
                 */
                $posts = apply_filters( "nav_menu_items_{$post_type_name}", $posts, $args, $post_type );
                $checkbox_items = walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $posts), 0, (object) $args );

                if ( 'all' == $current_tab && ! empty( $_REQUEST['selectall'] ) ) {
                    $checkbox_items = preg_replace('/(type=(.)checkbox(\2))/', '$1 checked=$2checked$2', $checkbox_items);

                }

                echo $checkbox_items;
                ?>
            </ul>
            <?php if ( ! empty( $page_links ) ) : ?>
                <div class="add-menu-item-pagelinks">
                    <?php echo $page_links; ?>
                </div>
            <?php endif; ?>
        </div><!-- /.tabs-panel -->

        <p class="button-controls">
            <span class="list-controls">
                <a href="<?php
                    echo esc_url( add_query_arg(
                        array(
                            $post_type_name . '-tab' => 'all',
                            'selectall' => 1,
                        ),
                        remove_query_arg( $removed_args )
                    ));
                ?>#posttype-<?php echo $post_type_name; ?>" class="select-all"><?php _e('Select All'); ?></a>
            </span>

            <span class="add-to-menu">
                <input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-post-type-menu-item" id="<?php echo esc_attr( 'submit-posttype-' . $post_type_name ); ?>" />
                <span class="spinner"></span>
            </span>
        </p>

    </div><!-- /.posttypediv -->
    <?php
}

/**
 * Displays a metabox for a taxonomy menu item.
 *
 * @since 3.0.0
 *
 * @param string $object Not used.
 * @param string $taxonomy The taxonomy object.
 */
function wp_nav_menu_item_taxonomy_meta_box( $object, $taxonomy ) {
    global $nav_menu_selected_id;
    $taxonomy_name = $taxonomy['args']->name;

    // paginate browsing for large numbers of objects
    $per_page = 50;
    $pagenum = isset( $_REQUEST[$taxonomy_name . '-tab'] ) && isset( $_REQUEST['paged'] ) ? absint( $_REQUEST['paged'] ) : 1;
    $offset = 0 < $pagenum ? $per_page * ( $pagenum - 1 ) : 0;

    $args = array(
        'child_of' => 0,
        'exclude' => '',
        'hide_empty' => false,
        'hierarchical' => 1,
        'include' => '',
        'number' => $per_page,
        'offset' => $offset,
        'order' => 'ASC',
        'orderby' => 'name',
        'pad_counts' => false,
    );

    $terms = get_terms( $taxonomy_name, $args );

    if ( ! $terms || is_wp_error($terms) ) {
        echo '<p>' . __( 'No items.' ) . '</p>';
        return;
    }

    $num_pages = ceil( wp_count_terms( $taxonomy_name , array_merge( $args, array('number' => '', 'offset' => '') ) ) / $per_page );

    $page_links = paginate_links( array(
        'base' => add_query_arg(
            array(
                $taxonomy_name . '-tab' => 'all',
                'paged' => '%#%',
                'item-type' => 'taxonomy',
                'item-object' => $taxonomy_name,
            )
        ),
        'format' => '',
        'prev_text' => __('&laquo;'),
        'next_text' => __('&raquo;'),
        'total' => $num_pages,
        'current' => $pagenum
    ));

    $db_fields = false;
    if ( is_taxonomy_hierarchical( $taxonomy_name ) ) {
        $db_fields = array( 'parent' => 'parent', 'id' => 'term_id' );
    }

    $walker = new Walker_Nav_Menu_Checklist( $db_fields );

    $current_tab = 'most-used';
    if ( isset( $_REQUEST[$taxonomy_name . '-tab'] ) && in_array( $_REQUEST[$taxonomy_name . '-tab'], array('all', 'most-used', 'search') ) ) {
        $current_tab = $_REQUEST[$taxonomy_name . '-tab'];
    }

    if ( ! empty( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
        $current_tab = 'search';
    }

    $removed_args = array(
        'action',
        'customlink-tab',
        'edit-menu-item',
        'menu-item',
        'page-tab',
        '_wpnonce',
    );

    ?>
    <div id="taxonomy-<?php echo $taxonomy_name; ?>" class="taxonomydiv">
        <ul id="taxonomy-<?php echo $taxonomy_name; ?>-tabs" class="taxonomy-tabs add-menu-item-tabs">
            <li <?php echo ( 'most-used' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-pop" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'most-used', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-pop">
                    <?php _e( 'Most Used' ); ?>
                </a>
            </li>
            <li <?php echo ( 'all' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="tabs-panel-<?php echo esc_attr( $taxonomy_name ); ?>-all" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'all', remove_query_arg($removed_args))); ?>#tabs-panel-<?php echo $taxonomy_name; ?>-all">
                    <?php _e( 'View All' ); ?>
                </a>
            </li>
            <li <?php echo ( 'search' == $current_tab ? ' class="tabs"' : '' ); ?>>
                <a class="nav-tab-link" data-type="tabs-panel-search-taxonomy-<?php echo esc_attr( $taxonomy_name ); ?>" href="<?php if ( $nav_menu_selected_id ) echo esc_url(add_query_arg($taxonomy_name . '-tab', 'search', remove_query_arg($removed_args))); ?>#tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
                    <?php _e( 'Search' ); ?>
                </a>
            </li>
        </ul><!-- .taxonomy-tabs -->

        <div id="tabs-panel-<?php echo $taxonomy_name; ?>-pop" class="tabs-panel <?php
            echo ( 'most-used' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>">
            <ul id="<?php echo $taxonomy_name; ?>checklist-pop" class="categorychecklist form-no-clear" >
                <?php
                $popular_terms = get_terms( $taxonomy_name, array( 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );
                $args['walker'] = $walker;
                echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $popular_terms), 0, (object) $args );
                ?>
            </ul>
        </div><!-- /.tabs-panel -->

        <div id="tabs-panel-<?php echo $taxonomy_name; ?>-all" class="tabs-panel tabs-panel-view-all <?php
            echo ( 'all' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>">
            <?php if ( ! empty( $page_links ) ) : ?>
                <div class="add-menu-item-pagelinks">
                    <?php echo $page_links; ?>
                </div>
            <?php endif; ?>
            <ul id="<?php echo $taxonomy_name; ?>checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
                <?php
                $args['walker'] = $walker;
                echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $terms), 0, (object) $args );
                ?>
            </ul>
            <?php if ( ! empty( $page_links ) ) : ?>
                <div class="add-menu-item-pagelinks">
                    <?php echo $page_links; ?>
                </div>
            <?php endif; ?>
        </div><!-- /.tabs-panel -->

        <div class="tabs-panel <?php
            echo ( 'search' == $current_tab ? 'tabs-panel-active' : 'tabs-panel-inactive' );
        ?>" id="tabs-panel-search-taxonomy-<?php echo $taxonomy_name; ?>">
            <?php
            if ( isset( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] ) ) {
                $searched = esc_attr( $_REQUEST['quick-search-taxonomy-' . $taxonomy_name] );
                $search_results = get_terms( $taxonomy_name, array( 'name__like' => $searched, 'fields' => 'all', 'orderby' => 'count', 'order' => 'DESC', 'hierarchical' => false ) );
            } else {
                $searched = '';
                $search_results = array();
            }
            ?>
            <p class="quick-search-wrap">
                <input type="search" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
                <span class="spinner"></span>
                <?php submit_button( __( 'Search' ), 'button-small quick-search-submit button-secondary hide-if-js', 'submit', false, array( 'id' => 'submit-quick-search-taxonomy-' . $taxonomy_name ) ); ?>
            </p>

            <ul id="<?php echo $taxonomy_name; ?>-search-checklist" data-wp-lists="list:<?php echo $taxonomy_name?>" class="categorychecklist form-no-clear">
            <?php if ( ! empty( $search_results ) && ! is_wp_error( $search_results ) ) : ?>
                <?php
                $args['walker'] = $walker;
                echo walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $search_results), 0, (object) $args );
                ?>
            <?php elseif ( is_wp_error( $search_results ) ) : ?>
                <li><?php echo $search_results->get_error_message(); ?></li>
            <?php elseif ( ! empty( $searched ) ) : ?>
                <li><?php _e('No results found.'); ?></li>
            <?php endif; ?>
            </ul>
        </div><!-- /.tabs-panel -->

        <p class="button-controls">
            <span class="list-controls">
                <a href="<?php
                    echo esc_url(add_query_arg(
                        array(
                            $taxonomy_name . '-tab' => 'all',
                            'selectall' => 1,
                        ),
                        remove_query_arg($removed_args)
                    ));
                ?>#taxonomy-<?php echo $taxonomy_name; ?>" class="select-all"><?php _e('Select All'); ?></a>
            </span>

            <span class="add-to-menu">
                <input type="submit"<?php wp_nav_menu_disabled_check( $nav_menu_selected_id ); ?> class="button-secondary submit-add-to-menu right" value="<?php esc_attr_e( 'Add to Menu' ); ?>" name="add-taxonomy-menu-item" id="<?php echo esc_attr( 'submit-taxonomy-' . $taxonomy_name ); ?>" />
                <span class="spinner"></span>
            </span>
        </p>

    </div><!-- /.taxonomydiv -->
    <?php
}

/**
 * Save posted nav menu item data.
 *
 * @since 3.0.0
 *
 * @param int $menu_id The menu ID for which to save this item. $menu_id of 0 makes a draft, orphaned menu item.
 * @param array $menu_data The unsanitized posted menu item data.
 * @return array The database IDs of the items saved
 */
function wp_save_nav_menu_items( $menu_id = 0, $menu_data = array() ) {
    $menu_id = (int) $menu_id;
    $items_saved = array();

    if ( 0 == $menu_id || is_nav_menu( $menu_id ) ) {

        // Loop through all the menu items' POST values
        foreach( (array) $menu_data as $_possible_db_id => $_item_object_data ) {
            if (
                empty( $_item_object_data['menu-item-object-id'] ) && // checkbox is not checked
                (
                    ! isset( $_item_object_data['menu-item-type'] ) || // and item type either isn't set
                    in_array( $_item_object_data['menu-item-url'], array( 'http://', '' ) ) || // or URL is the default
                    ! ( 'custom' == $_item_object_data['menu-item-type'] && ! isset( $_item_object_data['menu-item-db-id'] ) ) || // or it's not a custom menu item (but not the custom home page)
                    ! empty( $_item_object_data['menu-item-db-id'] ) // or it *is* a custom menu item that already exists
                )
            ) {
                continue; // then this potential menu item is not getting added to this menu
            }

            // if this possible menu item doesn't actually have a menu database ID yet
            if (
                empty( $_item_object_data['menu-item-db-id'] ) ||
                ( 0 > $_possible_db_id ) ||
                $_possible_db_id != $_item_object_data['menu-item-db-id']
            ) {
                $_actual_db_id = 0;
            } else {
                $_actual_db_id = (int) $_item_object_data['menu-item-db-id'];
            }

            $args = array(
                'menu-item-db-id' => ( isset( $_item_object_data['menu-item-db-id'] ) ? $_item_object_data['menu-item-db-id'] : '' ),
                'menu-item-object-id' => ( isset( $_item_object_data['menu-item-object-id'] ) ? $_item_object_data['menu-item-object-id'] : '' ),
                'menu-item-object' => ( isset( $_item_object_data['menu-item-object'] ) ? $_item_object_data['menu-item-object'] : '' ),
                'menu-item-parent-id' => ( isset( $_item_object_data['menu-item-parent-id'] ) ? $_item_object_data['menu-item-parent-id'] : '' ),
                'menu-item-position' => ( isset( $_item_object_data['menu-item-position'] ) ? $_item_object_data['menu-item-position'] : '' ),
                'menu-item-type' => ( isset( $_item_object_data['menu-item-type'] ) ? $_item_object_data['menu-item-type'] : '' ),
                'menu-item-title' => ( isset( $_item_object_data['menu-item-title'] ) ? $_item_object_data['menu-item-title'] : '' ),
                'menu-item-url' => ( isset( $_item_object_data['menu-item-url'] ) ? $_item_object_data['menu-item-url'] : '' ),
                'menu-item-description' => ( isset( $_item_object_data['menu-item-description'] ) ? $_item_object_data['menu-item-description'] : '' ),
                'menu-item-attr-title' => ( isset( $_item_object_data['menu-item-attr-title'] ) ? $_item_object_data['menu-item-attr-title'] : '' ),
                'menu-item-target' => ( isset( $_item_object_data['menu-item-target'] ) ? $_item_object_data['menu-item-target'] : '' ),
                'menu-item-classes' => ( isset( $_item_object_data['menu-item-classes'] ) ? $_item_object_data['menu-item-classes'] : '' ),
                'menu-item-xfn' => ( isset( $_item_object_data['menu-item-xfn'] ) ? $_item_object_data['menu-item-xfn'] : '' ),
            );

            $items_saved[] = wp_update_nav_menu_item( $menu_id, $_actual_db_id, $args );

        }
    }
    return $items_saved;
}

/**
 * Adds custom arguments to some of the meta box object types.
 *
 * @since 3.0.0
 *
 * @access private
 *
 * @param object $object The post type or taxonomy meta-object.
 * @return object The post type of taxonomy object.
 */
function _wp_nav_menu_meta_box_object( $object = null ) {
    if ( isset( $object->name ) ) {

        if ( 'page' == $object->name ) {
            $object->_default_query = array(
                'orderby' => 'menu_order title',
                'post_status' => 'publish',
            );

        // posts should show only published items
        } elseif ( 'post' == $object->name ) {
            $object->_default_query = array(
                'post_status' => 'publish',
            );

        // cats should be in reverse chronological order
        } elseif ( 'category' == $object->name ) {
            $object->_default_query = array(
                'orderby' => 'id',
                'order' => 'DESC',
            );

        // custom post types should show only published items
        } else {
            $object->_default_query = array(
                'post_status' => 'publish',
            );
        }
    }

    return $object;
}

/**
 * Returns the menu formatted to edit.
 *
 * @since 3.0.0
 *
 * @param string $menu_id The ID of the menu to format.
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_get_nav_menu_to_edit( $menu_id = 0 ) {
    $menu = wp_get_nav_menu_object( $menu_id );

    // If the menu exists, get its items.
    if ( is_nav_menu( $menu ) ) {
        $menu_items = wp_get_nav_menu_items( $menu->term_id, array('post_status' => 'any') );
        $result = '<div id="menu-instructions" class="post-body-plain';
        $result .= ( ! empty($menu_items) ) ? ' menu-instructions-inactive">' : '">';
        $result .= '<p>' . __( 'Add menu items from the column on the left.' ) . '</p>';
        $result .= '</div>';

        if( empty($menu_items) )
            return $result . ' <ul class="menu" id="menu-to-edit"> </ul>';

        /**
         * Filter the Walker class used to render a menu formatted for editing.
         *
         * @since 3.0.0
         *
         * @param string $walker_class_name The Walker class used to render a menu formatted for editing.
         * @param int    $menu_id           The ID of the menu being rendered.
         */
        $walker_class_name = apply_filters( 'wp_edit_nav_menu_walker', 'Walker_Nav_Menu_Edit', $menu_id );

        if ( class_exists( $walker_class_name ) )
            $walker = new $walker_class_name;
        else
            return new WP_Error( 'menu_walker_not_exist', sprintf( __('The Walker class named <strong>%s</strong> does not exist.'), $walker_class_name ) );

        $some_pending_menu_items = $some_invalid_menu_items = false;
        foreach( (array) $menu_items as $menu_item ) {
            if ( isset( $menu_item->post_status ) && 'draft' == $menu_item->post_status )
                $some_pending_menu_items = true;
            if ( ! empty( $menu_item->_invalid ) )
                $some_invalid_menu_items = true;
        }

        if ( $some_pending_menu_items )
            $result .= '<div class="updated inline"><p>' . __('Click Save Menu to make pending menu items public.') . '</p></div>';

        if ( $some_invalid_menu_items )
            $result .= '<div class="error inline"><p>' . __('There are some invalid menu items. Please check or delete them.') . '</p></div>';

        $result .= '<ul class="menu" id="menu-to-edit"> ';
        $result .= walk_nav_menu_tree( array_map('wp_setup_nav_menu_item', $menu_items), 0, (object) array('walker' => $walker ) );
        $result .= ' </ul> ';
        return $result;
    } elseif ( is_wp_error( $menu ) ) {
        return $menu;
    }

}

/**
 * Returns the columns for the nav menus page.
 *
 * @since 3.0.0
 *
 * @return string|WP_Error $output The menu formatted to edit or error object on failure.
 */
function wp_nav_menu_manage_columns() {
    return array(
        '_title' => __('Show advanced menu properties'),
        'cb' => '<input type="checkbox" />',
        'link-target' => __('Link Target'),
        'css-classes' => __('CSS Classes'),
        'xfn' => __('Link Relationship (XFN)'),
        'description' => __('Description'),
    );
}

/**
 * Deletes orphaned draft menu items
 *
 * @access private
 * @since 3.0.0
 *
 */
function _wp_delete_orphaned_draft_menu_items() {
    global $wpdb;
    $delete_timestamp = time() - ( DAY_IN_SECONDS * EMPTY_TRASH_DAYS );

    // delete orphaned draft menu items
    $menu_items_to_delete = $wpdb->get_col($wpdb->prepare("SELECT ID FROM $wpdb->posts AS p LEFT JOIN $wpdb->postmeta AS m ON p.ID = m.post_id WHERE post_type = 'nav_menu_item' AND post_status = 'draft' AND meta_key = '_menu_item_orphaned' AND meta_value < '%d'", $delete_timestamp ) );

    foreach( (array) $menu_items_to_delete as $menu_item_id )
        wp_delete_post( $menu_item_id, true );
}
add_action('admin_head-nav-menus.php', '_wp_delete_orphaned_draft_menu_items');

/**
 * Saves nav menu items
 *
 * @since 3.6.0
 *
 * @uses wp_get_nav_menu_items() to retrieve the nav menu's menu items
 * @uses wp_defer_term_counter() to enable then disable term counting
 *
 * @param int|string $nav_menu_selected_id (id, slug, or name ) of the currently-selected menu
 * @param string $nav_menu_selected_title Title of the currently-selected menu
 * @return array $messages The menu updated message
 */
function wp_nav_menu_update_menu_items ( $nav_menu_selected_id, $nav_menu_selected_title ) {
    $unsorted_menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'orderby' => 'ID', 'output' => ARRAY_A, 'output_key' => 'ID', 'post_status' => 'draft,publish' ) );

    $menu_items = array();
    // Index menu items by db ID
    foreach ( $unsorted_menu_items as $_item )
        $menu_items[$_item->db_id] = $_item;

    $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-title', 'menu-item-url', 'menu-item-description',
        'menu-item-attr-title', 'menu-item-target', 'menu-item-classes', 'menu-item-xfn'
    );

    wp_defer_term_counting( true );
    // 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 ( ! isset( $_POST['menu-item-title'][ $_key ] ) || '' == $_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 );
            }
        }
    }

    // Store 'auto-add' pages.
    $auto_add = ! empty( $_POST['auto-add-pages'] );
    $nav_menu_option = (array) get_option( 'nav_menu_options' );
    if ( ! isset( $nav_menu_option['auto_add'] ) )
        $nav_menu_option['auto_add'] = array();
    if ( $auto_add ) {
        if ( ! in_array( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) )
            $nav_menu_option['auto_add'][] = $nav_menu_selected_id;
    } else {
        if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) )
            unset( $nav_menu_option['auto_add'][$key] );
    }
    // Remove nonexistent/deleted menus
    $nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) );
    update_option( 'nav_menu_options', $nav_menu_option );

    wp_defer_term_counting( false );

    /** This action is documented in wp-includes/nav-menu.php */
    do_action( 'wp_update_nav_menu', $nav_menu_selected_id );

    $messages[] = '<div id="message" class="updated"><p>' . sprintf( __( '<strong>%1$s</strong> has been updated.' ), $nav_menu_selected_title ) . '</p></div>';
    unset( $menu_items, $unsorted_menu_items );

    return $messages;
}