WordPress 4.3
[autoinstalls/wordpress.git] / wp-admin / nav-menus.php
1 <?php
2 /**
3  * WordPress Administration for Navigation Menus
4  * Interface functions
5  *
6  * @version 2.0.0
7  *
8  * @package WordPress
9  * @subpackage Administration
10  */
11
12 /** Load WordPress Administration Bootstrap */
13 require_once( dirname( __FILE__ ) . '/admin.php' );
14
15 // Load all the nav menu interface functions
16 require_once( ABSPATH . 'wp-admin/includes/nav-menu.php' );
17
18 if ( ! current_theme_supports( 'menus' ) && ! current_theme_supports( 'widgets' ) )
19         wp_die( __( 'Your theme does not support navigation menus or widgets.' ) );
20
21 // Permissions Check
22 if ( ! current_user_can('edit_theme_options') )
23         wp_die( __( 'Cheatin&#8217; uh?' ), 403 );
24
25 wp_enqueue_script( 'nav-menu' );
26
27 if ( wp_is_mobile() )
28         wp_enqueue_script( 'jquery-touch-punch' );
29
30 // Container for any messages displayed to the user
31 $messages = array();
32
33 // Container that stores the name of the active menu
34 $nav_menu_selected_title = '';
35
36 // The menu id of the current menu being edited
37 $nav_menu_selected_id = isset( $_REQUEST['menu'] ) ? (int) $_REQUEST['menu'] : 0;
38
39 // Get existing menu locations assignments
40 $locations = get_registered_nav_menus();
41 $menu_locations = get_nav_menu_locations();
42 $num_locations = count( array_keys( $locations ) );
43
44 // Allowed actions: add, update, delete
45 $action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'edit';
46
47 switch ( $action ) {
48         case 'add-menu-item':
49                 check_admin_referer( 'add-menu_item', 'menu-settings-column-nonce' );
50                 if ( isset( $_REQUEST['nav-menu-locations'] ) )
51                         set_theme_mod( 'nav_menu_locations', array_map( 'absint', $_REQUEST['menu-locations'] ) );
52                 elseif ( isset( $_REQUEST['menu-item'] ) )
53                         wp_save_nav_menu_items( $nav_menu_selected_id, $_REQUEST['menu-item'] );
54                 break;
55         case 'move-down-menu-item' :
56
57                 // Moving down a menu item is the same as moving up the next in order.
58                 check_admin_referer( 'move-menu_item' );
59                 $menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0;
60                 if ( is_nav_menu_item( $menu_item_id ) ) {
61                         $menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );
62                         if ( ! is_wp_error( $menus ) && ! empty( $menus[0] ) ) {
63                                 $menu_id = (int) $menus[0];
64                                 $ordered_menu_items = wp_get_nav_menu_items( $menu_id );
65                                 $menu_item_data = (array) wp_setup_nav_menu_item( get_post( $menu_item_id ) );
66
67                                 // Set up the data we need in one pass through the array of menu items.
68                                 $dbids_to_orders = array();
69                                 $orders_to_dbids = array();
70                                 foreach( (array) $ordered_menu_items as $ordered_menu_item_object ) {
71                                         if ( isset( $ordered_menu_item_object->ID ) ) {
72                                                 if ( isset( $ordered_menu_item_object->menu_order ) ) {
73                                                         $dbids_to_orders[$ordered_menu_item_object->ID] = $ordered_menu_item_object->menu_order;
74                                                         $orders_to_dbids[$ordered_menu_item_object->menu_order] = $ordered_menu_item_object->ID;
75                                                 }
76                                         }
77                                 }
78
79                                 // Get next in order.
80                                 if (
81                                         isset( $orders_to_dbids[$dbids_to_orders[$menu_item_id] + 1] )
82                                 ) {
83                                         $next_item_id = $orders_to_dbids[$dbids_to_orders[$menu_item_id] + 1];
84                                         $next_item_data = (array) wp_setup_nav_menu_item( get_post( $next_item_id ) );
85
86                                         // If not siblings of same parent, bubble menu item up but keep order.
87                                         if (
88                                                 ! empty( $menu_item_data['menu_item_parent'] ) &&
89                                                 (
90                                                         empty( $next_item_data['menu_item_parent'] ) ||
91                                                         $next_item_data['menu_item_parent'] != $menu_item_data['menu_item_parent']
92                                                 )
93                                         ) {
94
95                                                 $parent_db_id = in_array( $menu_item_data['menu_item_parent'], $orders_to_dbids ) ? (int) $menu_item_data['menu_item_parent'] : 0;
96
97                                                 $parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) );
98
99                                                 if ( ! is_wp_error( $parent_object ) ) {
100                                                         $parent_data = (array) $parent_object;
101                                                         $menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent'];
102                                                         update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
103
104                                                 }
105
106                                         // Make menu item a child of its next sibling.
107                                         } else {
108                                                 $next_item_data['menu_order'] = $next_item_data['menu_order'] - 1;
109                                                 $menu_item_data['menu_order'] = $menu_item_data['menu_order'] + 1;
110
111                                                 $menu_item_data['menu_item_parent'] = $next_item_data['ID'];
112                                                 update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
113
114                                                 wp_update_post($menu_item_data);
115                                                 wp_update_post($next_item_data);
116                                         }
117
118                                 // The item is last but still has a parent, so bubble up.
119                                 } elseif (
120                                         ! empty( $menu_item_data['menu_item_parent'] ) &&
121                                         in_array( $menu_item_data['menu_item_parent'], $orders_to_dbids )
122                                 ) {
123                                         $menu_item_data['menu_item_parent'] = (int) get_post_meta( $menu_item_data['menu_item_parent'], '_menu_item_menu_item_parent', true);
124                                         update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
125                                 }
126                         }
127                 }
128
129                 break;
130         case 'move-up-menu-item' :
131                 check_admin_referer( 'move-menu_item' );
132                 $menu_item_id = isset( $_REQUEST['menu-item'] ) ? (int) $_REQUEST['menu-item'] : 0;
133                 if ( is_nav_menu_item( $menu_item_id ) ) {
134                         $menus = isset( $_REQUEST['menu'] ) ? array( (int) $_REQUEST['menu'] ) : wp_get_object_terms( $menu_item_id, 'nav_menu', array( 'fields' => 'ids' ) );
135                         if ( ! is_wp_error( $menus ) && ! empty( $menus[0] ) ) {
136                                 $menu_id = (int) $menus[0];
137                                 $ordered_menu_items = wp_get_nav_menu_items( $menu_id );
138                                 $menu_item_data = (array) wp_setup_nav_menu_item( get_post( $menu_item_id ) );
139
140                                 // Set up the data we need in one pass through the array of menu items.
141                                 $dbids_to_orders = array();
142                                 $orders_to_dbids = array();
143                                 foreach( (array) $ordered_menu_items as $ordered_menu_item_object ) {
144                                         if ( isset( $ordered_menu_item_object->ID ) ) {
145                                                 if ( isset( $ordered_menu_item_object->menu_order ) ) {
146                                                         $dbids_to_orders[$ordered_menu_item_object->ID] = $ordered_menu_item_object->menu_order;
147                                                         $orders_to_dbids[$ordered_menu_item_object->menu_order] = $ordered_menu_item_object->ID;
148                                                 }
149                                         }
150                                 }
151
152                                 // If this menu item is not first.
153                                 if ( ! empty( $dbids_to_orders[$menu_item_id] ) && ! empty( $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] ) ) {
154
155                                         // If this menu item is a child of the previous.
156                                         if (
157                                                 ! empty( $menu_item_data['menu_item_parent'] ) &&
158                                                 in_array( $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ) ) &&
159                                                 isset( $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] ) &&
160                                                 ( $menu_item_data['menu_item_parent'] == $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] )
161                                         ) {
162                                                 $parent_db_id = in_array( $menu_item_data['menu_item_parent'], $orders_to_dbids ) ? (int) $menu_item_data['menu_item_parent'] : 0;
163                                                 $parent_object = wp_setup_nav_menu_item( get_post( $parent_db_id ) );
164
165                                                 if ( ! is_wp_error( $parent_object ) ) {
166                                                         $parent_data = (array) $parent_object;
167
168                                                         /*
169                                                          * If there is something before the parent and parent a child of it,
170                                                          * make menu item a child also of it.
171                                                          */
172                                                         if (
173                                                                 ! empty( $dbids_to_orders[$parent_db_id] ) &&
174                                                                 ! empty( $orders_to_dbids[$dbids_to_orders[$parent_db_id] - 1] ) &&
175                                                                 ! empty( $parent_data['menu_item_parent'] )
176                                                         ) {
177                                                                 $menu_item_data['menu_item_parent'] = $parent_data['menu_item_parent'];
178
179                                                         /*
180                                                          * Else if there is something before parent and parent not a child of it,
181                                                          * make menu item a child of that something's parent
182                                                          */
183                                                         } elseif (
184                                                                 ! empty( $dbids_to_orders[$parent_db_id] ) &&
185                                                                 ! empty( $orders_to_dbids[$dbids_to_orders[$parent_db_id] - 1] )
186                                                         ) {
187                                                                 $_possible_parent_id = (int) get_post_meta( $orders_to_dbids[$dbids_to_orders[$parent_db_id] - 1], '_menu_item_menu_item_parent', true);
188                                                                 if ( in_array( $_possible_parent_id, array_keys( $dbids_to_orders ) ) )
189                                                                         $menu_item_data['menu_item_parent'] = $_possible_parent_id;
190                                                                 else
191                                                                         $menu_item_data['menu_item_parent'] = 0;
192
193                                                         // Else there isn't something before the parent.
194                                                         } else {
195                                                                 $menu_item_data['menu_item_parent'] = 0;
196                                                         }
197
198                                                         // Set former parent's [menu_order] to that of menu-item's.
199                                                         $parent_data['menu_order'] = $parent_data['menu_order'] + 1;
200
201                                                         // Set menu-item's [menu_order] to that of former parent.
202                                                         $menu_item_data['menu_order'] = $menu_item_data['menu_order'] - 1;
203
204                                                         // Save changes.
205                                                         update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
206                                                         wp_update_post($menu_item_data);
207                                                         wp_update_post($parent_data);
208                                                 }
209
210                                         // Else this menu item is not a child of the previous.
211                                         } elseif (
212                                                 empty( $menu_item_data['menu_order'] ) ||
213                                                 empty( $menu_item_data['menu_item_parent'] ) ||
214                                                 ! in_array( $menu_item_data['menu_item_parent'], array_keys( $dbids_to_orders ) ) ||
215                                                 empty( $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] ) ||
216                                                 $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1] != $menu_item_data['menu_item_parent']
217                                         ) {
218                                                 // Just make it a child of the previous; keep the order.
219                                                 $menu_item_data['menu_item_parent'] = (int) $orders_to_dbids[$dbids_to_orders[$menu_item_id] - 1];
220                                                 update_post_meta( $menu_item_data['ID'], '_menu_item_menu_item_parent', (int) $menu_item_data['menu_item_parent'] );
221                                                 wp_update_post($menu_item_data);
222                                         }
223                                 }
224                         }
225                 }
226                 break;
227
228         case 'delete-menu-item':
229                 $menu_item_id = (int) $_REQUEST['menu-item'];
230
231                 check_admin_referer( 'delete-menu_item_' . $menu_item_id );
232
233                 if ( is_nav_menu_item( $menu_item_id ) && wp_delete_post( $menu_item_id, true ) )
234                         $messages[] = '<div id="message" class="updated notice is-dismissible"><p>' . __('The menu item has been successfully deleted.') . '</p></div>';
235                 break;
236
237         case 'delete':
238                 check_admin_referer( 'delete-nav_menu-' . $nav_menu_selected_id );
239                 if ( is_nav_menu( $nav_menu_selected_id ) ) {
240                         $deletion = wp_delete_nav_menu( $nav_menu_selected_id );
241                 } else {
242                         // Reset the selected menu.
243                         $nav_menu_selected_id = 0;
244                         unset( $_REQUEST['menu'] );
245                 }
246
247                 if ( ! isset( $deletion ) )
248                         break;
249
250                 if ( is_wp_error( $deletion ) )
251                         $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . $deletion->get_error_message() . '</p></div>';
252                 else
253                         $messages[] = '<div id="message" class="updated notice is-dismissible"><p>' . __( 'The menu has been successfully deleted.' ) . '</p></div>';
254                 break;
255
256         case 'delete_menus':
257                 check_admin_referer( 'nav_menus_bulk_actions' );
258                 foreach ( $_REQUEST['delete_menus'] as $menu_id_to_delete ) {
259                         if ( ! is_nav_menu( $menu_id_to_delete ) )
260                                 continue;
261
262                         $deletion = wp_delete_nav_menu( $menu_id_to_delete );
263                         if ( is_wp_error( $deletion ) ) {
264                                 $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . $deletion->get_error_message() . '</p></div>';
265                                 $deletion_error = true;
266                         }
267                 }
268
269                 if ( empty( $deletion_error ) )
270                         $messages[] = '<div id="message" class="updated notice is-dismissible"><p>' . __( 'Selected menus have been successfully deleted.' ) . '</p></div>';
271                 break;
272
273         case 'update':
274                 check_admin_referer( 'update-nav_menu', 'update-nav-menu-nonce' );
275
276                 // Remove menu locations that have been unchecked.
277                 foreach ( $locations as $location => $description ) {
278                         if ( ( empty( $_POST['menu-locations'] ) || empty( $_POST['menu-locations'][ $location ] ) ) && isset( $menu_locations[ $location ] ) && $menu_locations[ $location ] == $nav_menu_selected_id )
279                                 unset( $menu_locations[ $location ] );
280                 }
281
282                 // Merge new and existing menu locations if any new ones are set.
283                 if ( isset( $_POST['menu-locations'] ) ) {
284                         $new_menu_locations = array_map( 'absint', $_POST['menu-locations'] );
285                         $menu_locations = array_merge( $menu_locations, $new_menu_locations );
286                 }
287
288                 // Set menu locations.
289                 set_theme_mod( 'nav_menu_locations', $menu_locations );
290
291                 // Add Menu.
292                 if ( 0 == $nav_menu_selected_id ) {
293                         $new_menu_title = trim( esc_html( $_POST['menu-name'] ) );
294
295                         if ( $new_menu_title ) {
296                                 $_nav_menu_selected_id = wp_update_nav_menu_object( 0, array('menu-name' => $new_menu_title) );
297
298                                 if ( is_wp_error( $_nav_menu_selected_id ) ) {
299                                         $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . $_nav_menu_selected_id->get_error_message() . '</p></div>';
300                                 } else {
301                                         $_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id );
302                                         $nav_menu_selected_id = $_nav_menu_selected_id;
303                                         $nav_menu_selected_title = $_menu_object->name;
304                                         if ( isset( $_REQUEST['menu-item'] ) )
305                                                 wp_save_nav_menu_items( $nav_menu_selected_id, absint( $_REQUEST['menu-item'] ) );
306                                         if ( isset( $_REQUEST['zero-menu-state'] ) ) {
307                                                 // If there are menu items, add them
308                                                 wp_nav_menu_update_menu_items( $nav_menu_selected_id, $nav_menu_selected_title );
309                                                 // Auto-save nav_menu_locations
310                                                 $locations = get_nav_menu_locations();
311                                                 foreach ( $locations as $location => $menu_id ) {
312                                                                 $locations[ $location ] = $nav_menu_selected_id;
313                                                                 break; // There should only be 1
314                                                 }
315                                                 set_theme_mod( 'nav_menu_locations', $locations );
316                                         }
317                                         if ( isset( $_REQUEST['use-location'] ) ) {
318                                                 $locations = get_registered_nav_menus();
319                                                 $menu_locations = get_nav_menu_locations();
320                                                 if ( isset( $locations[ $_REQUEST['use-location'] ] ) )
321                                                         $menu_locations[ $_REQUEST['use-location'] ] = $nav_menu_selected_id;
322                                                 set_theme_mod( 'nav_menu_locations', $menu_locations );
323                                         }
324
325                                         // $messages[] = '<div id="message" class="updated"><p>' . sprintf( __( '<strong>%s</strong> has been created.' ), $nav_menu_selected_title ) . '</p></div>';
326                                         wp_redirect( admin_url( 'nav-menus.php?menu=' . $_nav_menu_selected_id ) );
327                                         exit();
328                                 }
329                         } else {
330                                 $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . __( 'Please enter a valid menu name.' ) . '</p></div>';
331                         }
332
333                 // Update existing menu.
334                 } else {
335
336                         $_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id );
337
338                         $menu_title = trim( esc_html( $_POST['menu-name'] ) );
339                         if ( ! $menu_title ) {
340                                 $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . __( 'Please enter a valid menu name.' ) . '</p></div>';
341                                 $menu_title = $_menu_object->name;
342                         }
343
344                         if ( ! is_wp_error( $_menu_object ) ) {
345                                 $_nav_menu_selected_id = wp_update_nav_menu_object( $nav_menu_selected_id, array( 'menu-name' => $menu_title ) );
346                                 if ( is_wp_error( $_nav_menu_selected_id ) ) {
347                                         $_menu_object = $_nav_menu_selected_id;
348                                         $messages[] = '<div id="message" class="error notice is-dismissible"><p>' . $_nav_menu_selected_id->get_error_message() . '</p></div>';
349                                 } else {
350                                         $_menu_object = wp_get_nav_menu_object( $_nav_menu_selected_id );
351                                         $nav_menu_selected_title = $_menu_object->name;
352                                 }
353                         }
354
355                         // Update menu items.
356                         if ( ! is_wp_error( $_menu_object ) ) {
357                                 $messages = array_merge( $messages, wp_nav_menu_update_menu_items( $_nav_menu_selected_id, $nav_menu_selected_title ) );
358
359                                 // If the menu ID changed, redirect to the new URL.
360                                 if ( $nav_menu_selected_id != $_nav_menu_selected_id ) {
361                                         wp_redirect( admin_url( 'nav-menus.php?menu=' . intval( $_nav_menu_selected_id ) ) );
362                                         exit();
363                                 }
364                         }
365                 }
366                 break;
367         case 'locations':
368                 if ( ! $num_locations ) {
369                         wp_redirect( admin_url( 'nav-menus.php' ) );
370                         exit();
371                 }
372
373                 add_filter( 'screen_options_show_screen', '__return_false' );
374
375                 if ( isset( $_POST['menu-locations'] ) ) {
376                         check_admin_referer( 'save-menu-locations' );
377
378                         $new_menu_locations = array_map( 'absint', $_POST['menu-locations'] );
379                         $menu_locations = array_merge( $menu_locations, $new_menu_locations );
380                         // Set menu locations
381                         set_theme_mod( 'nav_menu_locations', $menu_locations );
382
383                         $messages[] = '<div id="message" class="updated notice is-dismissible"><p>' . __( 'Menu locations updated.' ) . '</p></div>';
384                 }
385                 break;
386 }
387
388 // Get all nav menus.
389 $nav_menus = wp_get_nav_menus();
390 $menu_count = count( $nav_menus );
391
392 // Are we on the add new screen?
393 $add_new_screen = ( isset( $_GET['menu'] ) && 0 == $_GET['menu'] ) ? true : false;
394
395 $locations_screen = ( isset( $_GET['action'] ) && 'locations' == $_GET['action'] ) ? true : false;
396
397 /*
398  * If we have one theme location, and zero menus, we take them right
399  * into editing their first menu.
400  */
401 $page_count = wp_count_posts( 'page' );
402 $one_theme_location_no_menus = ( 1 == count( get_registered_nav_menus() ) && ! $add_new_screen && empty( $nav_menus ) && ! empty( $page_count->publish ) ) ? true : false;
403
404 $nav_menus_l10n = array(
405         'oneThemeLocationNoMenus' => $one_theme_location_no_menus,
406         'moveUp'       => __( 'Move up one' ),
407         'moveDown'     => __( 'Move down one' ),
408         'moveToTop'    => __( 'Move to the top' ),
409         /* translators: %s: previous item name */
410         'moveUnder'    => __( 'Move under %s' ),
411         /* translators: %s: previous item name */
412         'moveOutFrom'  => __( 'Move out from under %s' ),
413         /* translators: %s: previous item name */
414         'under'        => __( 'Under %s' ),
415         /* translators: %s: previous item name */
416         'outFrom'      => __( 'Out from under %s' ),
417         /* translators: 1: item name, 2: item position, 3: total number of items */
418         'menuFocus'    => __( '%1$s. Menu item %2$d of %3$d.' ),
419         /* translators: 1: item name, 2: item position, 3: parent item name */
420         'subMenuFocus' => __( '%1$s. Sub item number %2$d under %3$s.' ),
421 );
422 wp_localize_script( 'nav-menu', 'menus', $nav_menus_l10n );
423
424 /*
425  * Redirect to add screen if there are no menus and this users has either zero,
426  * or more than 1 theme locations.
427  */
428 if ( 0 == $menu_count && ! $add_new_screen && ! $one_theme_location_no_menus )
429         wp_redirect( admin_url( 'nav-menus.php?action=edit&menu=0' ) );
430
431 // Get recently edited nav menu.
432 $recently_edited = absint( get_user_option( 'nav_menu_recently_edited' ) );
433 if ( empty( $recently_edited ) && is_nav_menu( $nav_menu_selected_id ) )
434         $recently_edited = $nav_menu_selected_id;
435
436 // Use $recently_edited if none are selected.
437 if ( empty( $nav_menu_selected_id ) && ! isset( $_GET['menu'] ) && is_nav_menu( $recently_edited ) )
438         $nav_menu_selected_id = $recently_edited;
439
440 // On deletion of menu, if another menu exists, show it.
441 if ( ! $add_new_screen && 0 < $menu_count && isset( $_GET['action'] ) && 'delete' == $_GET['action'] )
442         $nav_menu_selected_id = $nav_menus[0]->term_id;
443
444 // Set $nav_menu_selected_id to 0 if no menus.
445 if ( $one_theme_location_no_menus ) {
446         $nav_menu_selected_id = 0;
447 } elseif ( empty( $nav_menu_selected_id ) && ! empty( $nav_menus ) && ! $add_new_screen ) {
448         // if we have no selection yet, and we have menus, set to the first one in the list.
449         $nav_menu_selected_id = $nav_menus[0]->term_id;
450 }
451
452 // Update the user's setting.
453 if ( $nav_menu_selected_id != $recently_edited && is_nav_menu( $nav_menu_selected_id ) )
454         update_user_meta( $current_user->ID, 'nav_menu_recently_edited', $nav_menu_selected_id );
455
456 // If there's a menu, get its name.
457 if ( ! $nav_menu_selected_title && is_nav_menu( $nav_menu_selected_id ) ) {
458         $_menu_object = wp_get_nav_menu_object( $nav_menu_selected_id );
459         $nav_menu_selected_title = ! is_wp_error( $_menu_object ) ? $_menu_object->name : '';
460 }
461
462 // Generate truncated menu names.
463 foreach( (array) $nav_menus as $key => $_nav_menu ) {
464         $nav_menus[$key]->truncated_name = wp_html_excerpt( $_nav_menu->name, 40, '&hellip;' );
465 }
466
467 // Retrieve menu locations.
468 if ( current_theme_supports( 'menus' ) ) {
469         $locations = get_registered_nav_menus();
470         $menu_locations = get_nav_menu_locations();
471 }
472
473 /*
474  * Ensure the user will be able to scroll horizontally
475  * by adding a class for the max menu depth.
476  *
477  * @global int $_wp_nav_menu_max_depth
478  */
479 global $_wp_nav_menu_max_depth;
480 $_wp_nav_menu_max_depth = 0;
481
482 // Calling wp_get_nav_menu_to_edit generates $_wp_nav_menu_max_depth.
483 if ( is_nav_menu( $nav_menu_selected_id ) ) {
484         $menu_items = wp_get_nav_menu_items( $nav_menu_selected_id, array( 'post_status' => 'any' ) );
485         $edit_markup = wp_get_nav_menu_to_edit( $nav_menu_selected_id );
486 }
487
488 /**
489  *
490  * @global int $_wp_nav_menu_max_depth
491  *
492  * @param string $classes
493  * @return string
494  */
495 function wp_nav_menu_max_depth( $classes ) {
496         global $_wp_nav_menu_max_depth;
497         return "$classes menu-max-depth-$_wp_nav_menu_max_depth";
498 }
499
500 add_filter('admin_body_class', 'wp_nav_menu_max_depth');
501
502 wp_nav_menu_setup();
503 wp_initial_nav_menu_meta_boxes();
504
505 if ( ! current_theme_supports( 'menus' ) && ! $num_locations )
506         $messages[] = '<div id="message" class="updated"><p>' . sprintf( __( 'Your theme does not natively support menus, but you can use them in sidebars by adding a &#8220;Custom Menu&#8221; widget on the <a href="%s">Widgets</a> screen.' ), admin_url( 'widgets.php' ) ) . '</p></div>';
507
508 if ( ! $locations_screen ) : // Main tab
509         $overview  = '<p>' . __( 'This screen is used for managing your custom navigation menus.' ) . '</p>';
510         $overview .= '<p>' . sprintf( __( 'Menus can be displayed in locations defined by your theme, even used in sidebars by adding a &#8220;Custom Menu&#8221; widget on the <a href="%1$s">Widgets</a> screen. If your theme does not support the custom menus feature (the default themes, %2$s and %3$s, do), you can learn about adding this support by following the Documentation link to the side.' ), admin_url( 'widgets.php' ), 'Twenty Fifteen', 'Twenty Fourteen' ) . '</p>';
511         $overview .= '<p>' . __( 'From this screen you can:' ) . '</p>';
512         $overview .= '<ul><li>' . __( 'Create, edit, and delete menus' ) . '</li>';
513         $overview .= '<li>' . __( 'Add, organize, and modify individual menu items' ) . '</li></ul>';
514
515         get_current_screen()->add_help_tab( array(
516                 'id'      => 'overview',
517                 'title'   => __( 'Overview' ),
518                 'content' => $overview
519         ) );
520
521         $menu_management  = '<p>' . __( 'The menu management box at the top of the screen is used to control which menu is opened in the editor below.' ) . '</p>';
522         $menu_management .= '<ul><li>' . __( 'To edit an existing menu, <strong>choose a menu from the drop down and click Select</strong>' ) . '</li>';
523         $menu_management .= '<li>' . __( 'If you haven&#8217;t yet created any menus, <strong>click the &#8217;create a new menu&#8217; link</strong> to get started' ) . '</li></ul>';
524         $menu_management .= '<p>' . __( 'You can assign theme locations to individual menus by <strong>selecting the desired settings</strong> at the bottom of the menu editor. To assign menus to all theme locations at once, <strong>visit the Manage Locations tab</strong> at the top of the screen.' ) . '</p>';
525
526         get_current_screen()->add_help_tab( array(
527                 'id'      => 'menu-management',
528                 'title'   => __( 'Menu Management' ),
529                 'content' => $menu_management
530         ) );
531
532         $editing_menus  = '<p>' . __( 'Each custom menu may contain a mix of links to pages, categories, custom URLs or other content types. Menu links are added by selecting items from the expanding boxes in the left-hand column below.' ) . '</p>';
533         $editing_menus .= '<p>' . __( '<strong>Clicking the arrow to the right of any menu item</strong> in the editor will reveal a standard group of settings. Additional settings such as link target, CSS classes, link relationships, and link descriptions can be enabled and disabled via the Screen Options tab.' ) . '</p>';
534         $editing_menus .= '<ul><li>' . __( 'Add one or several items at once by <strong>selecting the checkbox next to each item and clicking Add to Menu</strong>' ) . '</li>';
535         $editing_menus .= '<li>' . __( 'To add a custom link, <strong>expand the Custom Links section, enter a URL and link text, and click Add to Menu</strong>' ) .'</li>';
536         $editing_menus .= '<li>' . __( 'To reorganize menu items, <strong>drag and drop items with your mouse or use your keyboard</strong>. Drag or move a menu item a little to the right to make it a submenu' ) . '</li>';
537         $editing_menus .= '<li>' . __( 'Delete a menu item by <strong>expanding it and clicking the Remove link</strong>' ) . '</li></ul>';
538
539         get_current_screen()->add_help_tab( array(
540                 'id'      => 'editing-menus',
541                 'title'   => __( 'Editing Menus' ),
542                 'content' => $editing_menus
543         ) );
544 else : // Locations Tab.
545         $locations_overview  = '<p>' . __( 'This screen is used for globally assigning menus to locations defined by your theme.' ) . '</p>';
546         $locations_overview .= '<ul><li>' . __( 'To assign menus to one or more theme locations, <strong>select a menu from each location&#8217;s drop down.</strong> When you&#8217;re finished, <strong>click Save Changes</strong>' ) . '</li>';
547         $locations_overview .= '<li>' . __( 'To edit a menu currently assigned to a theme location, <strong>click the adjacent &#8217;Edit&#8217; link</strong>' ) . '</li>';
548         $locations_overview .= '<li>' . __( 'To add a new menu instead of assigning an existing one, <strong>click the &#8217;Use new menu&#8217; link</strong>. Your new menu will be automatically assigned to that theme location' ) . '</li></ul>';
549
550         get_current_screen()->add_help_tab( array(
551                 'id'      => 'locations-overview',
552                 'title'   => __( 'Overview' ),
553                 'content' => $locations_overview
554         ) );
555 endif;
556
557 get_current_screen()->set_help_sidebar(
558         '<p><strong>' . __('For more information:') . '</strong></p>' .
559         '<p>' . __('<a href="https://codex.wordpress.org/Appearance_Menus_Screen" target="_blank">Documentation on Menus</a>') . '</p>' .
560         '<p>' . __('<a href="https://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
561 );
562
563 // Get the admin header.
564 require_once( ABSPATH . 'wp-admin/admin-header.php' );
565 ?>
566 <div class="wrap">
567         <h1><?php echo esc_html( __( 'Menus' ) ); ?>
568                 <?php
569                 if ( current_user_can( 'customize' ) ) :
570                         $focus = $locations_screen ? array( 'section' => 'menu_locations' ) : array( 'panel' => 'nav_menus' );
571                         printf(
572                                 ' <a class="page-title-action hide-if-no-customize" href="%1$s">%2$s</a>',
573                                 esc_url( add_query_arg( array(
574                                         array( 'autofocus' => $focus ),
575                                         'return' => urlencode( wp_unslash( $_SERVER['REQUEST_URI'] ) ),
576                                 ), admin_url( 'customize.php' ) ) ),
577                                 __( 'Manage in Customizer' )
578                         );
579                 endif;
580                 ?>
581         </h1>
582         <h2 class="nav-tab-wrapper">
583                 <a href="<?php echo admin_url( 'nav-menus.php' ); ?>" class="nav-tab<?php if ( ! isset( $_GET['action'] ) || isset( $_GET['action'] ) && 'locations' != $_GET['action'] ) echo ' nav-tab-active'; ?>"><?php esc_html_e( 'Edit Menus' ); ?></a>
584                 <?php if ( $num_locations && $menu_count ) : ?>
585                         <a href="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>" class="nav-tab<?php if ( $locations_screen ) echo ' nav-tab-active'; ?>"><?php esc_html_e( 'Manage Locations' ); ?></a>
586                 <?php
587                         endif;
588                 ?>
589         </h2>
590         <?php
591         foreach( $messages as $message ) :
592                 echo $message . "\n";
593         endforeach;
594         ?>
595         <?php
596         if ( $locations_screen ) :
597                 if ( 1 == $num_locations ) {
598                         echo '<p>' . __( 'Your theme supports one menu. Select which menu you would like to use.' ) . '</p>';
599                 } else {
600                         echo '<p>' .  sprintf( _n( 'Your theme supports %s menu. Select which menu appears in each location.', 'Your theme supports %s menus. Select which menu appears in each location.', $num_locations ), number_format_i18n( $num_locations ) ) . '</p>';
601                 }
602         ?>
603         <div id="menu-locations-wrap">
604                 <form method="post" action="<?php echo esc_url( add_query_arg( array( 'action' => 'locations' ), admin_url( 'nav-menus.php' ) ) ); ?>">
605                         <table class="widefat fixed" id="menu-locations-table">
606                                 <thead>
607                                 <tr>
608                                         <th scope="col" class="manage-column column-locations"><?php _e( 'Theme Location' ); ?></th>
609                                         <th scope="col" class="manage-column column-menus"><?php _e( 'Assigned Menu' ); ?></th>
610                                 </tr>
611                                 </thead>
612                                 <tbody class="menu-locations">
613                                 <?php foreach ( $locations as $_location => $_name ) { ?>
614                                         <tr class="menu-locations-row">
615                                                 <td class="menu-location-title"><label for="locations-<?php echo $_location; ?>"><?php echo $_name; ?></label></td>
616                                                 <td class="menu-location-menus">
617                                                         <select name="menu-locations[<?php echo $_location; ?>]" id="locations-<?php echo $_location; ?>">
618                                                                 <option value="0"><?php printf( '&mdash; %s &mdash;', esc_html__( 'Select a Menu' ) ); ?></option>
619                                                                 <?php foreach ( $nav_menus as $menu ) : ?>
620                                                                         <?php $selected = isset( $menu_locations[$_location] ) && $menu_locations[$_location] == $menu->term_id; ?>
621                                                                         <option <?php if ( $selected ) echo 'data-orig="true"'; ?> <?php selected( $selected ); ?> value="<?php echo $menu->term_id; ?>">
622                                                                                 <?php echo wp_html_excerpt( $menu->name, 40, '&hellip;' ); ?>
623                                                                         </option>
624                                                                 <?php endforeach; ?>
625                                                         </select>
626                                                         <div class="locations-row-links">
627                                                                 <?php if ( isset( $menu_locations[ $_location ] ) && 0 != $menu_locations[ $_location ] ) : ?>
628                                                                 <span class="locations-edit-menu-link">
629                                                                         <a href="<?php echo esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => $menu_locations[$_location] ), admin_url( 'nav-menus.php' ) ) ); ?>">
630                                                                                 <span aria-hidden="true"><?php _ex( 'Edit', 'menu' ); ?></span><span class="screen-reader-text"><?php _e( 'Edit selected menu' ); ?></span>
631                                                                         </a>
632                                                                 </span>
633                                                                 <?php endif; ?>
634                                                                 <span class="locations-add-menu-link">
635                                                                         <a href="<?php echo esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0, 'use-location' => $_location ), admin_url( 'nav-menus.php' ) ) ); ?>">
636                                                                                 <?php _ex( 'Use new menu', 'menu' ); ?>
637                                                                         </a>
638                                                                 </span>
639                                                         </div><!-- .locations-row-links -->
640                                                 </td><!-- .menu-location-menus -->
641                                         </tr><!-- .menu-locations-row -->
642                                 <?php } // foreach ?>
643                                 </tbody>
644                         </table>
645                         <p class="button-controls"><?php submit_button( __( 'Save Changes' ), 'primary left', 'nav-menu-locations', false ); ?></p>
646                         <?php wp_nonce_field( 'save-menu-locations' ); ?>
647                         <input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
648                 </form>
649         </div><!-- #menu-locations-wrap -->
650         <?php
651         /**
652          * Fires after the menu locations table is displayed.
653          *
654          * @since 3.6.0
655          */
656         do_action( 'after_menu_locations_table' ); ?>
657         <?php else : ?>
658         <div class="manage-menus">
659                 <?php if ( $menu_count < 2 ) : ?>
660                 <span class="add-edit-menu-action">
661                         <?php printf( __( 'Edit your menu below, or <a href="%s">create a new menu</a>.' ), esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0 ), admin_url( 'nav-menus.php' ) ) ) ); ?>
662                 </span><!-- /add-edit-menu-action -->
663                 <?php else : ?>
664                         <form method="get" action="<?php echo admin_url( 'nav-menus.php' ); ?>">
665                         <input type="hidden" name="action" value="edit" />
666                         <label for="select-menu-to-edit" class="selected-menu"><?php _e( 'Select a menu to edit:' ); ?></label>
667                         <select name="menu" id="select-menu-to-edit">
668                                 <?php if ( $add_new_screen ) : ?>
669                                         <option value="0" selected="selected"><?php _e( '&mdash; Select &mdash;' ); ?></option>
670                                 <?php endif; ?>
671                                 <?php foreach( (array) $nav_menus as $_nav_menu ) : ?>
672                                         <option value="<?php echo esc_attr( $_nav_menu->term_id ); ?>" <?php selected( $_nav_menu->term_id, $nav_menu_selected_id ); ?>>
673                                                 <?php
674                                                 echo esc_html( $_nav_menu->truncated_name ) ;
675
676                                                 if ( ! empty( $menu_locations ) && in_array( $_nav_menu->term_id, $menu_locations ) ) {
677                                                         $locations_assigned_to_this_menu = array();
678                                                         foreach ( array_keys( $menu_locations, $_nav_menu->term_id ) as $menu_location_key ) {
679                                                                 if ( isset( $locations[ $menu_location_key ] ) ) {
680                                                                         $locations_assigned_to_this_menu[] = $locations[ $menu_location_key ];
681                                                                 }
682                                                         }
683
684                                                         /**
685                                                          * Filter the number of locations listed per menu in the drop-down select.
686                                                          *
687                                                          * @since 3.6.0
688                                                          *
689                                                          * @param int $locations Number of menu locations to list. Default 3.
690                                                          */
691                                                         $assigned_locations = array_slice( $locations_assigned_to_this_menu, 0, absint( apply_filters( 'wp_nav_locations_listed_per_menu', 3 ) ) );
692
693                                                         // Adds ellipses following the number of locations defined in $assigned_locations.
694                                                         if ( ! empty( $assigned_locations ) ) {
695                                                                 printf( ' (%1$s%2$s)',
696                                                                         implode( ', ', $assigned_locations ),
697                                                                         count( $locations_assigned_to_this_menu ) > count( $assigned_locations ) ? ' &hellip;' : ''
698                                                                 );
699                                                         }
700                                                 }
701                                                 ?>
702                                         </option>
703                                 <?php endforeach; ?>
704                         </select>
705                         <span class="submit-btn"><input type="submit" class="button-secondary" value="<?php esc_attr_e( 'Select' ); ?>"></span>
706                         <span class="add-new-menu-action">
707                                 <?php printf( __( 'or <a href="%s">create a new menu</a>.' ), esc_url( add_query_arg( array( 'action' => 'edit', 'menu' => 0 ), admin_url( 'nav-menus.php' ) ) ) ); ?>
708                         </span><!-- /add-new-menu-action -->
709                 </form>
710         <?php endif; ?>
711         </div><!-- /manage-menus -->
712         <div id="nav-menus-frame">
713         <div id="menu-settings-column" class="metabox-holder<?php if ( isset( $_GET['menu'] ) && '0' == $_GET['menu'] ) { echo ' metabox-holder-disabled'; } ?>">
714
715                 <div class="clear"></div>
716
717                 <form id="nav-menu-meta" class="nav-menu-meta" method="post" enctype="multipart/form-data">
718                         <input type="hidden" name="menu" id="nav-menu-meta-object-id" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
719                         <input type="hidden" name="action" value="add-menu-item" />
720                         <?php wp_nonce_field( 'add-menu_item', 'menu-settings-column-nonce' ); ?>
721                         <?php do_accordion_sections( 'nav-menus', 'side', null ); ?>
722                 </form>
723
724         </div><!-- /#menu-settings-column -->
725         <div id="menu-management-liquid">
726                 <div id="menu-management">
727                         <form id="update-nav-menu" method="post" enctype="multipart/form-data">
728                                 <div class="menu-edit <?php if ( $add_new_screen ) echo 'blank-slate'; ?>">
729                                         <?php
730                                         wp_nonce_field( 'closedpostboxes', 'closedpostboxesnonce', false );
731                                         wp_nonce_field( 'meta-box-order', 'meta-box-order-nonce', false );
732                                         wp_nonce_field( 'update-nav_menu', 'update-nav-menu-nonce' );
733
734                                         if ( $one_theme_location_no_menus ) { ?>
735                                                 <input type="hidden" name="zero-menu-state" value="true" />
736                                         <?php } ?>
737                                         <input type="hidden" name="action" value="update" />
738                                         <input type="hidden" name="menu" id="menu" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" />
739                                         <div id="nav-menu-header">
740                                                 <div class="major-publishing-actions">
741                                                         <label class="menu-name-label howto open-label" for="menu-name">
742                                                                 <span><?php _e( 'Menu Name' ); ?></span>
743                                                                 <input name="menu-name" id="menu-name" type="text" class="menu-name regular-text menu-item-textbox input-with-default-title" title="<?php esc_attr_e( 'Enter menu name here' ); ?>" value="<?php if ( $one_theme_location_no_menus ) _e( 'Menu 1' ); else echo esc_attr( $nav_menu_selected_title ); ?>" />
744                                                         </label>
745                                                         <div class="publishing-action">
746                                                                 <?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'button-primary menu-save', 'save_menu', false, array( 'id' => 'save_menu_header' ) ); ?>
747                                                         </div><!-- END .publishing-action -->
748                                                 </div><!-- END .major-publishing-actions -->
749                                         </div><!-- END .nav-menu-header -->
750                                         <div id="post-body">
751                                                 <div id="post-body-content">
752                                                         <?php if ( ! $add_new_screen ) : ?>
753                                                         <h3><?php _e( 'Menu Structure' ); ?></h3>
754                                                         <?php $starter_copy = ( $one_theme_location_no_menus ) ? __( 'Edit your default menu by adding or removing items. Drag each item into the order you prefer. Click Create Menu to save your changes.' ) : __( 'Drag each item into the order you prefer. Click the arrow on the right of the item to reveal additional configuration options.' ); ?>
755                                                         <div class="drag-instructions post-body-plain" <?php if ( isset( $menu_items ) && 0 == count( $menu_items ) ) { ?>style="display: none;"<?php } ?>>
756                                                                 <p><?php echo $starter_copy; ?></p>
757                                                         </div>
758                                                         <?php
759                                                         if ( isset( $edit_markup ) && ! is_wp_error( $edit_markup ) ) {
760                                                                 echo $edit_markup;
761                                                         } else {
762                                                         ?>
763                                                         <ul class="menu" id="menu-to-edit"></ul>
764                                                         <?php } ?>
765                                                         <?php endif; ?>
766                                                         <?php if ( $add_new_screen ) : ?>
767                                                                 <p class="post-body-plain"><?php _e( 'Give your menu a name above, then click Create Menu.' ); ?></p>
768                                                                 <?php if ( isset( $_GET['use-location'] ) ) : ?>
769                                                                         <input type="hidden" name="use-location" value="<?php echo esc_attr( $_GET['use-location'] ); ?>" />
770                                                                 <?php endif; ?>
771                                                         <?php endif; ?>
772                                                         <div class="menu-settings" <?php if ( $one_theme_location_no_menus ) { ?>style="display: none;"<?php } ?>>
773                                                                 <h3><?php _e( 'Menu Settings' ); ?></h3>
774                                                                 <?php
775                                                                 if ( ! isset( $auto_add ) ) {
776                                                                         $auto_add = get_option( 'nav_menu_options' );
777                                                                         if ( ! isset( $auto_add['auto_add'] ) )
778                                                                                 $auto_add = false;
779                                                                         elseif ( false !== array_search( $nav_menu_selected_id, $auto_add['auto_add'] ) )
780                                                                                 $auto_add = true;
781                                                                         else
782                                                                                 $auto_add = false;
783                                                                 } ?>
784
785                                                                 <dl class="auto-add-pages">
786                                                                         <dt class="howto"><?php _e( 'Auto add pages' ); ?></dt>
787                                                                         <dd class="checkbox-input"><input type="checkbox"<?php checked( $auto_add ); ?> name="auto-add-pages" id="auto-add-pages" value="1" /> <label for="auto-add-pages"><?php printf( __('Automatically add new top-level pages to this menu' ), esc_url( admin_url( 'edit.php?post_type=page' ) ) ); ?></label></dd>
788                                                                 </dl>
789
790                                                                 <?php if ( current_theme_supports( 'menus' ) ) : ?>
791
792                                                                         <dl class="menu-theme-locations">
793                                                                                 <dt class="howto"><?php _e( 'Theme locations' ); ?></dt>
794                                                                                 <?php foreach ( $locations as $location => $description ) : ?>
795                                                                                 <dd class="checkbox-input">
796                                                                                         <input type="checkbox"<?php checked( isset( $menu_locations[ $location ] ) && $menu_locations[ $location ] == $nav_menu_selected_id ); ?> name="menu-locations[<?php echo esc_attr( $location ); ?>]" id="locations-<?php echo esc_attr( $location ); ?>" value="<?php echo esc_attr( $nav_menu_selected_id ); ?>" /> <label for="locations-<?php echo esc_attr( $location ); ?>"><?php echo $description; ?></label>
797                                                                                         <?php if ( ! empty( $menu_locations[ $location ] ) && $menu_locations[ $location ] != $nav_menu_selected_id ) : ?>
798                                                                                         <span class="theme-location-set"> <?php printf( __( "(Currently set to: %s)" ), wp_get_nav_menu_object( $menu_locations[ $location ] )->name ); ?> </span>
799                                                                                         <?php endif; ?>
800                                                                                 </dd>
801                                                                                 <?php endforeach; ?>
802                                                                         </dl>
803
804                                                                 <?php endif; ?>
805
806                                                         </div>
807                                                 </div><!-- /#post-body-content -->
808                                         </div><!-- /#post-body -->
809                                         <div id="nav-menu-footer">
810                                                 <div class="major-publishing-actions">
811                                                         <?php if ( 0 != $menu_count && ! $add_new_screen ) : ?>
812                                                         <span class="delete-action">
813                                                                 <a class="submitdelete deletion menu-delete" href="<?php echo esc_url( wp_nonce_url( add_query_arg( array( 'action' => 'delete', 'menu' => $nav_menu_selected_id, admin_url() ) ), 'delete-nav_menu-' . $nav_menu_selected_id) ); ?>"><?php _e('Delete Menu'); ?></a>
814                                                         </span><!-- END .delete-action -->
815                                                         <?php endif; ?>
816                                                         <div class="publishing-action">
817                                                                 <?php submit_button( empty( $nav_menu_selected_id ) ? __( 'Create Menu' ) : __( 'Save Menu' ), 'button-primary menu-save', 'save_menu', false, array( 'id' => 'save_menu_footer' ) ); ?>
818                                                         </div><!-- END .publishing-action -->
819                                                 </div><!-- END .major-publishing-actions -->
820                                         </div><!-- /#nav-menu-footer -->
821                                 </div><!-- /.menu-edit -->
822                         </form><!-- /#update-nav-menu -->
823                 </div><!-- /#menu-management -->
824         </div><!-- /#menu-management-liquid -->
825         </div><!-- /#nav-menus-frame -->
826         <?php endif; ?>
827 </div><!-- /.wrap-->
828 <?php include( ABSPATH . 'wp-admin/admin-footer.php' ); ?>