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root / drupal7 / modules / menu / menu.admin.inc @ b0dc3a2e

1
<?php
2

    
3
/**
4
 * @file
5
 * Administrative page callbacks for menu module.
6
 */
7

    
8
/**
9
 * Menu callback which shows an overview page of all the custom menus and their descriptions.
10
 */
11
function menu_overview_page() {
12
  $result = db_query("SELECT * FROM {menu_custom} ORDER BY title", array(), array('fetch' => PDO::FETCH_ASSOC));
13
  $header = array(t('Title'), array('data' => t('Operations'), 'colspan' => '3'));
14
  $rows = array();
15
  foreach ($result as $menu) {
16
    $row = array(theme('menu_admin_overview', array('title' => $menu['title'], 'name' => $menu['menu_name'], 'description' => $menu['description'])));
17
    $row[] = array('data' => l(t('list links'), 'admin/structure/menu/manage/' . $menu['menu_name']));
18
    $row[] = array('data' => l(t('edit menu'), 'admin/structure/menu/manage/' . $menu['menu_name'] . '/edit'));
19
    $row[] = array('data' => l(t('add link'), 'admin/structure/menu/manage/' . $menu['menu_name'] . '/add'));
20
    $rows[] = $row;
21
  }
22

    
23
  return theme('table', array('header' => $header, 'rows' => $rows));
24
}
25

    
26
/**
27
 * Returns HTML for a menu title and description for the menu overview page.
28
 *
29
 * @param $variables
30
 *   An associative array containing:
31
 *   - title: The menu's title.
32
 *   - description: The menu's description.
33
 *
34
 * @ingroup themeable
35
 */
36
function theme_menu_admin_overview($variables) {
37
  $output = check_plain($variables['title']);
38
  $output .= '<div class="description">' . filter_xss_admin($variables['description']) . '</div>';
39

    
40
  return $output;
41
}
42

    
43
/**
44
 * Form for editing an entire menu tree at once.
45
 *
46
 * Shows for one menu the menu links accessible to the current user and
47
 * relevant operations.
48
 */
49
function menu_overview_form($form, &$form_state, $menu) {
50
  global $menu_admin;
51
  $form['#attached']['css'] = array(drupal_get_path('module', 'menu') . '/menu.css');
52
  $sql = "
53
    SELECT m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.delivery_callback, m.title, m.title_callback, m.title_arguments, m.type, m.description, ml.*
54
    FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path
55
    WHERE ml.menu_name = :menu
56
    ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC";
57
  $result = db_query($sql, array(':menu' => $menu['menu_name']), array('fetch' => PDO::FETCH_ASSOC));
58
  $links = array();
59
  foreach ($result as $item) {
60
    $links[] = $item;
61
  }
62
  $tree = menu_tree_data($links);
63
  $node_links = array();
64
  menu_tree_collect_node_links($tree, $node_links);
65
  // We indicate that a menu administrator is running the menu access check.
66
  $menu_admin = TRUE;
67
  menu_tree_check_access($tree, $node_links);
68
  $menu_admin = FALSE;
69

    
70
  $form = array_merge($form, _menu_overview_tree_form($tree));
71
  $form['#menu'] =  $menu;
72

    
73
  if (element_children($form)) {
74
    $form['actions'] = array('#type' => 'actions');
75
    $form['actions']['submit'] = array(
76
      '#type' => 'submit',
77
      '#value' => t('Save configuration'),
78
    );
79
  }
80
  else {
81
    $form['#empty_text'] = t('There are no menu links yet. <a href="@link">Add link</a>.', array('@link' => url('admin/structure/menu/manage/'. $form['#menu']['menu_name'] .'/add')));
82
  }
83
  return $form;
84
}
85

    
86
/**
87
 * Recursive helper function for menu_overview_form().
88
 *
89
 * @param $tree
90
 *   The menu_tree retrieved by menu_tree_data.
91
 */
92
function _menu_overview_tree_form($tree) {
93
  $form = &drupal_static(__FUNCTION__, array('#tree' => TRUE));
94
  foreach ($tree as $data) {
95
    $title = '';
96
    $item = $data['link'];
97
    // Don't show callbacks; these have $item['hidden'] < 0.
98
    if ($item && $item['hidden'] >= 0) {
99
      $mlid = 'mlid:' . $item['mlid'];
100
      $form[$mlid]['#item'] = $item;
101
      $form[$mlid]['#attributes'] = $item['hidden'] ? array('class' => array('menu-disabled')) : array('class' => array('menu-enabled'));
102
      $form[$mlid]['title']['#markup'] = l($item['title'], $item['href'], $item['localized_options']);
103
      if ($item['hidden']) {
104
        $form[$mlid]['title']['#markup'] .= ' (' . t('disabled') . ')';
105
      }
106
      elseif ($item['link_path'] == 'user' && $item['module'] == 'system') {
107
        $form[$mlid]['title']['#markup'] .= ' (' . t('logged in users only') . ')';
108
      }
109

    
110
      $form[$mlid]['hidden'] = array(
111
        '#type' => 'checkbox',
112
        '#title' => t('Enable @title menu link', array('@title' => $item['title'])),
113
        '#title_display' => 'invisible',
114
        '#default_value' => !$item['hidden'],
115
      );
116
      $form[$mlid]['weight'] = array(
117
        '#type' => 'weight',
118
        '#delta' => 50,
119
        '#default_value' => $item['weight'],
120
        '#title_display' => 'invisible',
121
        '#title' => t('Weight for @title', array('@title' => $item['title'])),
122
      );
123
      $form[$mlid]['mlid'] = array(
124
        '#type' => 'hidden',
125
        '#value' => $item['mlid'],
126
      );
127
      $form[$mlid]['plid'] = array(
128
        '#type' => 'hidden',
129
        '#default_value' => $item['plid'],
130
      );
131
      // Build a list of operations.
132
      $operations = array();
133
      $operations['edit'] = array('#type' => 'link', '#title' => t('edit'), '#href' => 'admin/structure/menu/item/' . $item['mlid'] . '/edit');
134
      // Only items created by the menu module can be deleted.
135
      if ($item['module'] == 'menu' || $item['updated'] == 1) {
136
        $operations['delete'] = array('#type' => 'link', '#title' => t('delete'), '#href' => 'admin/structure/menu/item/' . $item['mlid'] . '/delete');
137
      }
138
      // Set the reset column.
139
      elseif ($item['module'] == 'system' && $item['customized']) {
140
        $operations['reset'] = array('#type' => 'link', '#title' => t('reset'), '#href' => 'admin/structure/menu/item/' . $item['mlid'] . '/reset');
141
      }
142
      $form[$mlid]['operations'] = $operations;
143
    }
144

    
145
    if ($data['below']) {
146
      _menu_overview_tree_form($data['below']);
147
    }
148
  }
149
  return $form;
150
}
151

    
152
/**
153
 * Submit handler for the menu overview form.
154
 *
155
 * This function takes great care in saving parent items first, then items
156
 * underneath them. Saving items in the incorrect order can break the menu tree.
157
 *
158
 * @see menu_overview_form()
159
 */
160
function menu_overview_form_submit($form, &$form_state) {
161
  // When dealing with saving menu items, the order in which these items are
162
  // saved is critical. If a changed child item is saved before its parent,
163
  // the child item could be saved with an invalid path past its immediate
164
  // parent. To prevent this, save items in the form in the same order they
165
  // are sent by $_POST, ensuring parents are saved first, then their children.
166
  // See http://drupal.org/node/181126#comment-632270
167
  $order = array_flip(array_keys($form_state['input'])); // Get the $_POST order.
168
  $form = array_merge($order, $form); // Update our original form with the new order.
169

    
170
  $updated_items = array();
171
  $fields = array('weight', 'plid');
172
  foreach (element_children($form) as $mlid) {
173
    if (isset($form[$mlid]['#item'])) {
174
      $element = $form[$mlid];
175
      // Update any fields that have changed in this menu item.
176
      foreach ($fields as $field) {
177
        if ($element[$field]['#value'] != $element[$field]['#default_value']) {
178
          $element['#item'][$field] = $element[$field]['#value'];
179
          $updated_items[$mlid] = $element['#item'];
180
        }
181
      }
182
      // Hidden is a special case, the value needs to be reversed.
183
      if ($element['hidden']['#value'] != $element['hidden']['#default_value']) {
184
        // Convert to integer rather than boolean due to PDO cast to string.
185
        $element['#item']['hidden'] = $element['hidden']['#value'] ? 0 : 1;
186
        $updated_items[$mlid] = $element['#item'];
187
      }
188
    }
189
  }
190

    
191
  // Save all our changed items to the database.
192
  foreach ($updated_items as $item) {
193
    $item['customized'] = 1;
194
    menu_link_save($item);
195
  }
196
  drupal_set_message(t('Your configuration has been saved.'));
197
}
198

    
199
/**
200
 * Returns HTML for the menu overview form into a table.
201
 *
202
 * @param $variables
203
 *   An associative array containing:
204
 *   - form: A render element representing the form.
205
 *
206
 * @ingroup themeable
207
 */
208
function theme_menu_overview_form($variables) {
209
  $form = $variables['form'];
210

    
211
  drupal_add_tabledrag('menu-overview', 'match', 'parent', 'menu-plid', 'menu-plid', 'menu-mlid', TRUE, MENU_MAX_DEPTH - 1);
212
  drupal_add_tabledrag('menu-overview', 'order', 'sibling', 'menu-weight');
213

    
214
  $header = array(
215
    t('Menu link'),
216
    array('data' => t('Enabled'), 'class' => array('checkbox')),
217
    t('Weight'),
218
    array('data' => t('Operations'), 'colspan' => '3'),
219
  );
220

    
221
  $rows = array();
222
  foreach (element_children($form) as $mlid) {
223
    if (isset($form[$mlid]['hidden'])) {
224
      $element = &$form[$mlid];
225
      // Build a list of operations.
226
      $operations = array();
227
      foreach (element_children($element['operations']) as $op) {
228
        $operations[] = array('data' => drupal_render($element['operations'][$op]), 'class' => array('menu-operations'));
229
      }
230
      while (count($operations) < 2) {
231
        $operations[] = '';
232
      }
233

    
234
      // Add special classes to be used for tabledrag.js.
235
      $element['plid']['#attributes']['class'] = array('menu-plid');
236
      $element['mlid']['#attributes']['class'] = array('menu-mlid');
237
      $element['weight']['#attributes']['class'] = array('menu-weight');
238

    
239
      // Change the parent field to a hidden. This allows any value but hides the field.
240
      $element['plid']['#type'] = 'hidden';
241

    
242
      $row = array();
243
      $row[] = theme('indentation', array('size' => $element['#item']['depth'] - 1)) . drupal_render($element['title']);
244
      $row[] = array('data' => drupal_render($element['hidden']), 'class' => array('checkbox', 'menu-enabled'));
245
      $row[] = drupal_render($element['weight']) . drupal_render($element['plid']) . drupal_render($element['mlid']);
246
      $row = array_merge($row, $operations);
247

    
248
      $row = array_merge(array('data' => $row), $element['#attributes']);
249
      $row['class'][] = 'draggable';
250
      $rows[] = $row;
251
    }
252
  }
253
  $output = '';
254
  if (empty($rows)) {
255
    $rows[] = array(array('data' => $form['#empty_text'], 'colspan' => '7'));
256
  }
257
  $output .= theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => array('id' => 'menu-overview')));
258
  $output .= drupal_render_children($form);
259
  return $output;
260
}
261

    
262
/**
263
 * Menu callback; Build the menu link editing form.
264
 */
265
function menu_edit_item($form, &$form_state, $type, $item, $menu) {
266
  if ($type == 'add' || empty($item)) {
267
    // This is an add form, initialize the menu link.
268
    $item = array('link_title' => '', 'mlid' => 0, 'plid' => 0, 'menu_name' => $menu['menu_name'], 'weight' => 0, 'link_path' => '', 'options' => array(), 'module' => 'menu', 'expanded' => 0, 'hidden' => 0, 'has_children' => 0);
269
  }
270
  else {
271
    // Get the human-readable menu title from the given menu name.
272
    $titles = menu_get_menus();
273
    $current_title = $titles[$item['menu_name']];
274

    
275
    // Get the current breadcrumb and add a link to that menu's overview page.
276
    $breadcrumb = menu_get_active_breadcrumb();
277
    $breadcrumb[] = l($current_title, 'admin/structure/menu/manage/' . $item['menu_name']);
278
    drupal_set_breadcrumb($breadcrumb);
279
  }
280
  $form['actions'] = array('#type' => 'actions');
281
  $form['link_title'] = array(
282
    '#type' => 'textfield',
283
    '#title' => t('Menu link title'),
284
    '#maxlength' => 255,
285
    '#default_value' => $item['link_title'],
286
    '#description' => t('The text to be used for this link in the menu.'),
287
    '#required' => TRUE,
288
  );
289
  foreach (array('link_path', 'mlid', 'module', 'has_children', 'options') as $key) {
290
    $form[$key] = array('#type' => 'value', '#value' => $item[$key]);
291
  }
292
  // Any item created or edited via this interface is considered "customized".
293
  $form['customized'] = array('#type' => 'value', '#value' => 1);
294
  $form['original_item'] = array('#type' => 'value', '#value' => $item);
295

    
296
  $path = $item['link_path'];
297
  if (isset($item['options']['query'])) {
298
    $path .= '?' . drupal_http_build_query($item['options']['query']);
299
  }
300
  if (isset($item['options']['fragment'])) {
301
    $path .= '#' . $item['options']['fragment'];
302
  }
303
  if ($item['module'] == 'menu') {
304
    $form['link_path'] = array(
305
      '#type' => 'textfield',
306
      '#title' => t('Path'),
307
      '#maxlength' => 255,
308
      '#default_value' => $path,
309
      '#description' => t('The path for this menu link. This can be an internal path such as %add-node or an external URL such as %example. Enter %front to link to the front page.', array('%front' => '<front>', '%add-node' => 'node/add', '%example' => 'http://example.com')),
310
      '#required' => TRUE,
311
    );
312
    $form['actions']['delete'] = array(
313
      '#type' => 'submit',
314
      '#value' => t('Delete'),
315
      '#access' => $item['mlid'],
316
      '#submit' => array('menu_item_delete_submit'),
317
      '#weight' => 10,
318
    );
319
  }
320
  else {
321
    $form['_path'] = array(
322
      '#type' => 'item',
323
      '#title' => t('Path'),
324
      '#description' => l($item['link_title'], $item['href'], $item['options']),
325
    );
326
  }
327
  $form['description'] = array(
328
    '#type' => 'textarea',
329
    '#title' => t('Description'),
330
    '#default_value' => isset($item['options']['attributes']['title']) ? $item['options']['attributes']['title'] : '',
331
    '#rows' => 1,
332
    '#description' => t('Shown when hovering over the menu link.'),
333
  );
334
  $form['enabled'] = array(
335
    '#type' => 'checkbox',
336
    '#title' => t('Enabled'),
337
    '#default_value' => !$item['hidden'],
338
    '#description' => t('Menu links that are not enabled will not be listed in any menu.'),
339
  );
340
  $form['expanded'] = array(
341
    '#type' => 'checkbox',
342
    '#title' => t('Show as expanded'),
343
    '#default_value' => $item['expanded'],
344
    '#description' => t('If selected and this menu link has children, the menu will always appear expanded.'),
345
  );
346

    
347
  // Generate a list of possible parents (not including this link or descendants).
348
  $options = menu_parent_options(menu_get_menus(), $item);
349
  $default = $item['menu_name'] . ':' . $item['plid'];
350
  if (!isset($options[$default])) {
351
    $default = 'navigation:0';
352
  }
353
  $form['parent'] = array(
354
    '#type' => 'select',
355
    '#title' => t('Parent link'),
356
    '#default_value' => $default,
357
    '#options' => $options,
358
    '#description' => t('The maximum depth for a link and all its children is fixed at !maxdepth. Some menu links may not be available as parents if selecting them would exceed this limit.', array('!maxdepth' => MENU_MAX_DEPTH)),
359
    '#attributes' => array('class' => array('menu-title-select')),
360
  );
361
  $form['weight'] = array(
362
    '#type' => 'weight',
363
    '#title' => t('Weight'),
364
    '#delta' => 50,
365
    '#default_value' => $item['weight'],
366
    '#description' => t('Optional. In the menu, the heavier links will sink and the lighter links will be positioned nearer the top.'),
367
  );
368
  $form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Save'));
369

    
370
  return $form;
371
}
372

    
373
/**
374
 * Validate form values for a menu link being added or edited.
375
 */
376
function menu_edit_item_validate($form, &$form_state) {
377
  $item = &$form_state['values'];
378
  $normal_path = drupal_get_normal_path($item['link_path']);
379
  if ($item['link_path'] != $normal_path) {
380
    drupal_set_message(t('The menu system stores system paths only, but will use the URL alias for display. %link_path has been stored as %normal_path', array('%link_path' => $item['link_path'], '%normal_path' => $normal_path)));
381
    $item['link_path'] = $normal_path;
382
  }
383
  if (!url_is_external($item['link_path'])) {
384
    $parsed_link = parse_url($item['link_path']);
385
    if (isset($parsed_link['query'])) {
386
      $item['options']['query'] = drupal_get_query_array($parsed_link['query']);
387
    }
388
    else {
389
      // Use unset() rather than setting to empty string
390
      // to avoid redundant serialized data being stored.
391
      unset($item['options']['query']);
392
    }
393
    if (isset($parsed_link['fragment'])) {
394
      $item['options']['fragment'] = $parsed_link['fragment'];
395
    }
396
    else {
397
      unset($item['options']['fragment']);
398
    }
399
    if (isset($parsed_link['path']) && $item['link_path'] != $parsed_link['path']) {
400
      $item['link_path'] = $parsed_link['path'];
401
    }
402
  }
403
  if (!trim($item['link_path']) || !drupal_valid_path($item['link_path'], TRUE)) {
404
    form_set_error('link_path', t("The path '@link_path' is either invalid or you do not have access to it.", array('@link_path' => $item['link_path'])));
405
  }
406
}
407

    
408
/**
409
 * Submit function for the delete button on the menu item editing form.
410
 */
411
function menu_item_delete_submit($form, &$form_state) {
412
  $form_state['redirect'] = 'admin/structure/menu/item/' . $form_state['values']['mlid'] . '/delete';
413
}
414

    
415
/**
416
 * Process menu and menu item add/edit form submissions.
417
 */
418
function menu_edit_item_submit($form, &$form_state) {
419
  $item = &$form_state['values'];
420

    
421
  // The value of "hidden" is the opposite of the value
422
  // supplied by the "enabled" checkbox.
423
  $item['hidden'] = (int) !$item['enabled'];
424
  unset($item['enabled']);
425

    
426
  $item['options']['attributes']['title'] = $item['description'];
427
  list($item['menu_name'], $item['plid']) = explode(':', $item['parent']);
428
  if (!menu_link_save($item)) {
429
    drupal_set_message(t('There was an error saving the menu link.'), 'error');
430
  }
431
  else {
432
    drupal_set_message(t('Your configuration has been saved.'));
433
  }
434
  $form_state['redirect'] = 'admin/structure/menu/manage/' . $item['menu_name'];
435
}
436

    
437
/**
438
 * Menu callback; Build the form that handles the adding/editing of a custom menu.
439
 */
440
function menu_edit_menu($form, &$form_state, $type, $menu = array()) {
441
  $system_menus = menu_list_system_menus();
442
  $menu += array(
443
    'menu_name' => '',
444
    'old_name' => !empty($menu['menu_name']) ? $menu['menu_name'] : '',
445
    'title' => '',
446
    'description' => '',
447
  );
448
  // Allow menu_edit_menu_submit() and other form submit handlers to determine
449
  // whether the menu already exists.
450
  $form['#insert'] = empty($menu['old_name']);
451
  $form['old_name'] = array(
452
    '#type' => 'value',
453
    '#value' => $menu['old_name'],
454
  );
455

    
456
  $form['title'] = array(
457
    '#type' => 'textfield',
458
    '#title' => t('Title'),
459
    '#default_value' => $menu['title'],
460
    '#required' => TRUE,
461
    // The title of a system menu cannot be altered.
462
    '#access' => !isset($system_menus[$menu['menu_name']]),
463
  );
464

    
465
  $form['menu_name'] = array(
466
    '#type' => 'machine_name',
467
    '#title' => t('Menu name'),
468
    '#default_value' => $menu['menu_name'],
469
    '#maxlength' => MENU_MAX_MENU_NAME_LENGTH_UI,
470
    '#description' => t('A unique name to construct the URL for the menu. It must only contain lowercase letters, numbers and hyphens.'),
471
    '#machine_name' => array(
472
      'exists' => 'menu_edit_menu_name_exists',
473
      'source' => array('title'),
474
      'replace_pattern' => '[^a-z0-9-]+',
475
      'replace' => '-',
476
    ),
477
    // A menu's machine name cannot be changed.
478
    '#disabled' => !empty($menu['old_name']) || isset($system_menus[$menu['menu_name']]),
479
  );
480

    
481
  $form['description'] = array(
482
    '#type' => 'textarea',
483
    '#title' => t('Description'),
484
    '#default_value' => $menu['description'],
485
  );
486
  $form['actions'] = array('#type' => 'actions');
487
  $form['actions']['submit'] = array(
488
    '#type' => 'submit',
489
    '#value' => t('Save'),
490
  );
491
  // Only custom menus may be deleted.
492
  $form['actions']['delete'] = array(
493
    '#type' => 'submit',
494
    '#value' => t('Delete'),
495
    '#access' => $type == 'edit' && !isset($system_menus[$menu['menu_name']]),
496
    '#submit' => array('menu_custom_delete_submit'),
497
  );
498

    
499
  return $form;
500
}
501

    
502
/**
503
 * Submit function for the 'Delete' button on the menu editing form.
504
 */
505
function menu_custom_delete_submit($form, &$form_state) {
506
  $form_state['redirect'] = 'admin/structure/menu/manage/' . $form_state['values']['menu_name'] . '/delete';
507
}
508

    
509
/**
510
 * Menu callback; check access and get a confirm form for deletion of a custom menu.
511
 */
512
function menu_delete_menu_page($menu) {
513
  // System-defined menus may not be deleted.
514
  $system_menus = menu_list_system_menus();
515
  if (isset($system_menus[$menu['menu_name']])) {
516
    return MENU_ACCESS_DENIED;
517
  }
518
  return drupal_get_form('menu_delete_menu_confirm', $menu);
519
}
520

    
521
/**
522
 * Build a confirm form for deletion of a custom menu.
523
 */
524
function menu_delete_menu_confirm($form, &$form_state, $menu) {
525
  $form['#menu'] = $menu;
526
  $caption = '';
527
  $num_links = db_query("SELECT COUNT(*) FROM {menu_links} WHERE menu_name = :menu", array(':menu' => $menu['menu_name']))->fetchField();
528
  if ($num_links) {
529
    $caption .= '<p>' . format_plural($num_links, '<strong>Warning:</strong> There is currently 1 menu link in %title. It will be deleted (system-defined items will be reset).', '<strong>Warning:</strong> There are currently @count menu links in %title. They will be deleted (system-defined links will be reset).', array('%title' => $menu['title'])) . '</p>';
530
  }
531
  $caption .= '<p>' . t('This action cannot be undone.') . '</p>';
532
  return confirm_form($form, t('Are you sure you want to delete the custom menu %title?', array('%title' => $menu['title'])), 'admin/structure/menu/manage/' . $menu['menu_name'], $caption, t('Delete'));
533
}
534

    
535
/**
536
 * Delete a custom menu and all links in it.
537
 */
538
function menu_delete_menu_confirm_submit($form, &$form_state) {
539
  $menu = $form['#menu'];
540
  $form_state['redirect'] = 'admin/structure/menu';
541

    
542
  // System-defined menus may not be deleted - only menus defined by this module.
543
  $system_menus = menu_list_system_menus();
544
  if (isset($system_menus[$menu['menu_name']])  || !(db_query("SELECT 1 FROM {menu_custom} WHERE menu_name = :menu", array(':menu' => $menu['menu_name']))->fetchField())) {
545
    return;
546
  }
547

    
548
  // Reset all the menu links defined by the system via hook_menu().
549
  $result = db_query("SELECT * FROM {menu_links} ml INNER JOIN {menu_router} m ON ml.router_path = m.path WHERE ml.menu_name = :menu AND ml.module = 'system' ORDER BY m.number_parts ASC", array(':menu' => $menu['menu_name']), array('fetch' => PDO::FETCH_ASSOC));
550
  foreach ($result as $link) {
551
    menu_reset_item($link);
552
  }
553

    
554
  // Delete all links to the overview page for this menu.
555
  $result = db_query("SELECT mlid FROM {menu_links} ml WHERE ml.link_path = :link", array(':link' => 'admin/structure/menu/manage/' . $menu['menu_name']), array('fetch' => PDO::FETCH_ASSOC));
556
  foreach ($result as $link) {
557
    menu_link_delete($link['mlid']);
558
  }
559

    
560
  // Delete the custom menu and all its menu links.
561
  menu_delete($menu);
562

    
563
  $t_args = array('%title' => $menu['title']);
564
  drupal_set_message(t('The custom menu %title has been deleted.', $t_args));
565
  watchdog('menu', 'Deleted custom menu %title and all its menu links.', $t_args, WATCHDOG_NOTICE);
566
}
567

    
568
/**
569
 * Returns whether a menu name already exists.
570
 *
571
 * @see menu_edit_menu()
572
 * @see form_validate_machine_name()
573
 */
574
function menu_edit_menu_name_exists($value) {
575
  // 'menu-' is added to the menu name to avoid name-space conflicts.
576
  $value = 'menu-' . $value;
577
  $custom_exists = db_query_range('SELECT 1 FROM {menu_custom} WHERE menu_name = :menu', 0, 1, array(':menu' => $value))->fetchField();
578
  $link_exists = db_query_range("SELECT 1 FROM {menu_links} WHERE menu_name = :menu", 0, 1, array(':menu' => $value))->fetchField();
579

    
580
  return $custom_exists || $link_exists;
581
}
582

    
583
/**
584
 * Submit function for adding or editing a custom menu.
585
 */
586
function menu_edit_menu_submit($form, &$form_state) {
587
  $menu = $form_state['values'];
588
  $path = 'admin/structure/menu/manage/';
589
  if ($form['#insert']) {
590
    // Add 'menu-' to the menu name to help avoid name-space conflicts.
591
    $menu['menu_name'] = 'menu-' . $menu['menu_name'];
592
    $link['link_title'] = $menu['title'];
593
    $link['link_path'] = $path . $menu['menu_name'];
594
    $link['router_path'] = $path . '%';
595
    $link['module'] = 'menu';
596
    $link['plid'] = db_query("SELECT mlid FROM {menu_links} WHERE link_path = :link AND module = :module", array(
597
      ':link' => 'admin/structure/menu',
598
      ':module' => 'system'
599
    ))
600
    ->fetchField();
601

    
602
    menu_link_save($link);
603
    menu_save($menu);
604
  }
605
  else {
606
    menu_save($menu);
607
    $result = db_query("SELECT mlid FROM {menu_links} WHERE link_path = :path", array(':path' => $path . $menu['menu_name']), array('fetch' => PDO::FETCH_ASSOC));
608
    foreach ($result as $m) {
609
      $link = menu_link_load($m['mlid']);
610
      $link['link_title'] = $menu['title'];
611
      menu_link_save($link);
612
    }
613
  }
614
  drupal_set_message(t('Your configuration has been saved.'));
615
  $form_state['redirect'] = $path . $menu['menu_name'];
616
}
617

    
618
/**
619
 * Menu callback; Check access and present a confirm form for deleting a menu link.
620
 */
621
function menu_item_delete_page($item) {
622
  // Links defined via hook_menu may not be deleted. Updated items are an
623
  // exception, as they can be broken.
624
  if ($item['module'] == 'system' && !$item['updated']) {
625
    return MENU_ACCESS_DENIED;
626
  }
627
  return drupal_get_form('menu_item_delete_form', $item);
628
}
629

    
630
/**
631
 * Build a confirm form for deletion of a single menu link.
632
 */
633
function menu_item_delete_form($form, &$form_state, $item) {
634
  $form['#item'] = $item;
635
  return confirm_form($form, t('Are you sure you want to delete the custom menu link %item?', array('%item' => $item['link_title'])), 'admin/structure/menu/manage/' . $item['menu_name']);
636
}
637

    
638
/**
639
 * Process menu delete form submissions.
640
 */
641
function menu_item_delete_form_submit($form, &$form_state) {
642
  $item = $form['#item'];
643
  menu_link_delete($item['mlid']);
644
  $t_args = array('%title' => $item['link_title']);
645
  drupal_set_message(t('The menu link %title has been deleted.', $t_args));
646
  watchdog('menu', 'Deleted menu link %title.', $t_args, WATCHDOG_NOTICE);
647
  $form_state['redirect'] = 'admin/structure/menu/manage/' . $item['menu_name'];
648
}
649

    
650
/**
651
 * Menu callback; reset a single modified menu link.
652
 */
653
function menu_reset_item_confirm($form, &$form_state, $item) {
654
  $form['item'] = array('#type' => 'value', '#value' => $item);
655
  return confirm_form($form, t('Are you sure you want to reset the link %item to its default values?', array('%item' => $item['link_title'])), 'admin/structure/menu/manage/' . $item['menu_name'], t('Any customizations will be lost. This action cannot be undone.'), t('Reset'));
656
}
657

    
658
/**
659
 * Process menu reset item form submissions.
660
 */
661
function menu_reset_item_confirm_submit($form, &$form_state) {
662
  $item = $form_state['values']['item'];
663
  $new_item = menu_reset_item($item);
664
  drupal_set_message(t('The menu link was reset to its default settings.'));
665
  $form_state['redirect'] = 'admin/structure/menu/manage/' . $new_item['menu_name'];
666
}
667

    
668
/**
669
 * Menu callback; Build the form presenting menu configuration options.
670
 */
671
function menu_configure() {
672
  $form['intro'] = array(
673
    '#type' => 'item',
674
    '#markup' => t('The menu module allows on-the-fly creation of menu links in the content authoring forms. To configure these settings for a particular content type, visit the <a href="@content-types">Content types</a> page, click the <em>edit</em> link for the content type, and go to the <em>Menu settings</em> section.', array('@content-types' => url('admin/structure/types'))),
675
  );
676

    
677
  $menu_options = menu_get_menus();
678

    
679
  $main = variable_get('menu_main_links_source', 'main-menu');
680
  $form['menu_main_links_source'] = array(
681
    '#type' => 'select',
682
    '#title' => t('Source for the Main links'),
683
    '#default_value' => variable_get('menu_main_links_source', 'main-menu'),
684
    '#empty_option' => t('No Main links'),
685
    '#options' => $menu_options,
686
    '#tree' => FALSE,
687
    '#description' => t('Select what should be displayed as the Main links (typically at the top of the page).'),
688
  );
689

    
690
  $form['menu_secondary_links_source'] = array(
691
    '#type' => 'select',
692
    '#title' => t('Source for the Secondary links'),
693
    '#default_value' => variable_get('menu_secondary_links_source', 'user-menu'),
694
    '#empty_option' => t('No Secondary links'),
695
    '#options' => $menu_options,
696
    '#tree' => FALSE,
697
    '#description' => t('Select the source for the Secondary links. An advanced option allows you to use the same source for both Main links (currently %main) and Secondary links: if your source menu has two levels of hierarchy, the top level menu links will appear in the Main links, and the children of the active link will appear in the Secondary links.', array('%main' => $main ? $menu_options[$main] : t('none'))),
698
  );
699

    
700
  return system_settings_form($form);
701
}