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root / drupal7 / sites / all / modules / token / token.module @ 87dbc3bf

1
<?php
2

    
3
/**
4
 * @file
5
 * Enhances the token API in core: adds a browseable UI, missing tokens, etc.
6
 */
7

    
8
/**
9
 * The maximum depth for token tree recursion.
10
 */
11
define('TOKEN_MAX_DEPTH', 9);
12

    
13
/**
14
 * Implements hook_help().
15
 */
16
function token_help($path, $arg) {
17
  if ($path == 'admin/help#token') {
18
    if (current_path() != 'admin/help/token') {
19
      // Because system_modules() executes hook_help() for each module to 'test'
20
      // if they will return anything, but not actually display it, we want to
21
      // return a TRUE value if this is not actually the help page.
22
      return TRUE;
23
    }
24
    $output = '<dl>';
25
    $output .= '<dt>' . t('List of the currently available tokens on this site') . '</dt>';
26
    $output .= '<dd>' . theme('token_tree', array('token_types' => 'all', 'click_insert' => FALSE, 'show_restricted' => TRUE)) . '</dd>';
27
    $output .= '</dl>';
28
    return $output;
29
  }
30
}
31

    
32
/**
33
 * Implements hook_system_info_alter().
34
 *
35
 * Prevent the token_actions module from being enabled since updates may have
36
 * left the old module files still in the directory.
37
 */
38
function token_system_info_alter(&$info, $file, $type) {
39
  if ($type == 'module' && $file->name == 'token_actions') {
40
    $info['hidden'] = TRUE;
41
  }
42
}
43

    
44
/**
45
 * Return an array of the core modules supported by token.module.
46
 */
47
function _token_core_supported_modules() {
48
  return array('book', 'field', 'menu', 'profile');
49
}
50

    
51
/**
52
 * Implements hook_menu().
53
 */
54
function token_menu() {
55
  /*$items['token/autocomplete/all/%menu_tail'] = array(
56
    'page callback' => 'token_autocomplete',
57
    'access callback' => TRUE,
58
    'type' => MENU_CALLBACK,
59
    'file' => 'token.pages.inc',
60
  );*/
61
  $items['token/autocomplete/%token_type'] = array(
62
    'page callback' => 'token_autocomplete_token',
63
    'page arguments' => array(2),
64
    'access callback' => TRUE,
65
    'type' => MENU_CALLBACK,
66
    'file' => 'token.pages.inc',
67
  );
68
  /*$items['token/autocomplete/%token_type/%menu_tail'] = array(
69
    'page callback' => 'token_autocomplete_token',
70
    'page arguments' => array(2, 3),
71
    'access callback' => TRUE,
72
    'type' => MENU_CALLBACK,
73
    'file' => 'token.pages.inc',
74
  );*/
75

    
76
  $items['token/tree'] = array(
77
    'page callback' => 'token_page_output_tree',
78
    'access callback' => TRUE,
79
    'type' => MENU_CALLBACK,
80
    'file' => 'token.pages.inc',
81
    'theme callback' => 'ajax_base_page_theme',
82
  );
83

    
84
  // Devel token pages.
85
  if (module_exists('devel')) {
86
    $items['node/%node/devel/token'] = array(
87
      'title' => 'Tokens',
88
      'page callback' => 'token_devel_token_object',
89
      'page arguments' => array('node', 1),
90
      'access arguments' => array('access devel information'),
91
      'type' => MENU_LOCAL_TASK,
92
      'file' => 'token.pages.inc',
93
      'weight' => 5,
94
    );
95
    $items['comment/%comment/devel/token'] = array(
96
      'title' => 'Tokens',
97
      'page callback' => 'token_devel_token_object',
98
      'page arguments' => array('comment', 1),
99
      'access arguments' => array('access devel information'),
100
      'type' => MENU_LOCAL_TASK,
101
      'file' => 'token.pages.inc',
102
      'weight' => 5,
103
    );
104
    $items['taxonomy/term/%taxonomy_term/devel/token'] = array(
105
      'title' => 'Tokens',
106
      'page callback' => 'token_devel_token_object',
107
      'page arguments' => array('taxonomy_term', 2),
108
      'access arguments' => array('access devel information'),
109
      'type' => MENU_LOCAL_TASK,
110
      'file' => 'token.pages.inc',
111
      'weight' => 5,
112
    );
113
    $items['user/%user/devel/token'] = array(
114
      'title' => 'Tokens',
115
      'page callback' => 'token_devel_token_object',
116
      'page arguments' => array('user', 1),
117
      'access arguments' => array('access devel information'),
118
      'type' => MENU_LOCAL_TASK,
119
      'file' => 'token.pages.inc',
120
      'weight' => 5,
121
    );
122
  }
123

    
124
  // Admin menu callback to clear token caches.
125
  $items['token/flush-cache'] = array(
126
    'page callback' => 'token_flush_cache_callback',
127
    'access arguments' => array('flush caches'),
128
    'type' => MENU_CALLBACK,
129
    'file' => 'token.pages.inc',
130
  );
131

    
132
  return $items;
133
}
134

    
135
/**
136
 * Implements hook_admin_menu_output_alter().
137
 */
138
function token_admin_menu_output_alter(&$content) {
139
  $content['icon']['icon']['flush-cache']['token'] = array(
140
    '#title' => t('Token registry'),
141
    '#href' => 'token/flush-cache',
142
    '#options' => array(
143
      'query' => drupal_get_destination() + array('token' => drupal_get_token('token/flush-cache')),
144
    ),
145
  );
146
}
147

    
148
function token_type_load($token_type) {
149
  $info = token_get_info();
150
  return isset($info['types'][$token_type]) ? $info['types'][$token_type] : FALSE;
151
}
152

    
153
/**
154
 * Implements hook_theme().
155
 */
156
function token_theme() {
157
  $info['tree_table'] = array(
158
    'variables' => array(
159
      'header' => array(),
160
      'rows' => array(),
161
      'attributes' => array(),
162
      'empty' => '',
163
      'caption' => '',
164
    ),
165
    'file' => 'token.pages.inc',
166
  );
167
  $info['token_tree'] = array(
168
    'variables' => array(
169
      'token_types' => array(),
170
      'global_types' => TRUE,
171
      'click_insert' => TRUE,
172
      'show_restricted' => FALSE,
173
      'recursion_limit' => 3,
174
      'dialog' => FALSE,
175
    ),
176
    'file' => 'token.pages.inc',
177
  );
178
  $info['token_tree_link'] = array(
179
    'variables' => array(
180
      'text' => NULL,
181
      'options' => array(),
182
      'dialog' => TRUE,
183
    ),
184
    'file' => 'token.pages.inc',
185
  );
186

    
187
  return $info;
188
}
189

    
190
/**
191
 * Implements hook_library().
192
 */
193
function token_library() {
194
  // jQuery treeTable plugin.
195
  $libraries['treeTable'] = array(
196
    'title' => 'jQuery treeTable',
197
    'website' => 'http://plugins.jquery.com/project/treetable',
198
    'version' => '2.3.0',
199
    'js' => array(
200
      drupal_get_path('module', 'token') . '/jquery.treeTable.js' => array(),
201
    ),
202
    'css' => array(
203
      drupal_get_path('module', 'token') . '/jquery.treeTable.css' => array(),
204
    ),
205
  );
206

    
207
  $libraries['dialog'] = array(
208
    'title' => 'Token dialog',
209
    'version' => '1.0',
210
    'js' => array(
211
      drupal_get_path('module', 'token') . '/token.js' => array(),
212
    ),
213
    'dependencies' => array(
214
      array('system', 'ui.dialog'),
215
    ),
216
  );
217

    
218
  return $libraries;
219
}
220

    
221
/**
222
 * Implements hook_form_alter().
223
 *
224
 * Adds a submit handler to forms which could affect the tokens available on
225
 * the site.
226
 */
227
function token_form_alter(&$form, $form_state, $form_id) {
228
  switch ($form_id) {
229
    // Profile field forms.
230
    case 'profile_field_form':
231
    case 'profile_field_delete':
232
    // User picture form.
233
    case 'user_admin_settings':
234
    // System date type form.
235
    // @todo Remove when http://drupal.org/node/1173706 is fixed.
236
    case 'system_add_date_format_type_form':
237
    case 'system_delete_date_format_type_form':
238
      $form += array('#submit' => array());
239
      array_unshift($form['#submit'], 'token_clear_cache');
240
      break;
241
  }
242
}
243

    
244
/**
245
 * Implements hook_block_view_alter().
246
 */
247
function token_block_view_alter(&$data, $block) {
248
  if (!empty($block->title) && $block->title != '<none>') {
249
    // Perform unsanitized token replacement since _block_render_blocks() will
250
    // call check_plain() on $block->title.
251
    $block->title = token_replace($block->title, array(), array('sanitize' => FALSE));
252
  }
253
}
254

    
255
/**
256
 * Implements hook_form_FORM_ID_alter().
257
 */
258
function token_form_block_add_block_form_alter(&$form, $form_state) {
259
  token_form_block_admin_configure_alter($form, $form_state);
260
}
261

    
262
/**
263
 * Implements hook_form_FORM_ID_alter().
264
 */
265
function token_form_block_admin_configure_alter(&$form, $form_state) {
266
  $form['settings']['title']['#description'] .= ' ' . t('This field supports tokens.');
267
  // @todo Figure out why this token validation does not seem to be working here.
268
  $form['settings']['title']['#element_validate'][] = 'token_element_validate';
269
  $form['settings']['title'] += array('#token_types' => array());
270
}
271

    
272
/**
273
 * Implements hook_widget_form_alter().
274
 */
275
function token_field_widget_form_alter(&$element, &$form_state, $context) {
276
  if (!empty($element['#description']) && is_string($element['#description'])) {
277
    $element['#description'] = filter_xss_admin(token_replace($element['#description']));
278
  }
279
}
280

    
281
/**
282
 * Implements hook_field_info_alter().
283
 */
284
function token_field_info_alter(&$info) {
285
  $defaults = array(
286
    'taxonomy_term_reference' => 'taxonomy_term_reference_plain',
287
    'number_integer' => 'number_unformatted',
288
    'number_decimal' => 'number_unformatted',
289
    'number_float' => 'number_unformatted',
290
    'file' => 'file_url_plain',
291
    'image' => 'file_url_plain',
292
    'text' => 'text_default',
293
    'text_long' => 'text_default',
294
    'text_with_summary' => 'text_default',
295
    'list_integer' => 'list_default',
296
    'list_float' => 'list_default',
297
    'list_text' => 'list_default',
298
    'list_boolean' => 'list_default',
299
  );
300
  foreach ($defaults as $field_type => $default_token_formatter) {
301
    if (isset($info[$field_type])) {
302
      $info[$field_type] += array('default_token_formatter' => $default_token_formatter);
303
    }
304
  }
305
}
306

    
307
/**
308
 * Implements hook_field_display_alter().
309
 */
310
function token_field_display_alter(&$display, $context) {
311
  if ($context['view_mode'] == 'token') {
312
    $view_mode_settings = field_view_mode_settings($context['instance']['entity_type'], $context['instance']['bundle']);
313
    // If the token view mode fell back to the 'default' view mode, then
314
    // use the default token formatter.
315
    if (empty($view_mode_settings[$context['view_mode']]['custom_settings'])) {
316
      $field_type_info = field_info_field_types($context['field']['type']);
317

    
318
      // If the field has specified a specific formatter to be used by default
319
      // with tokens, use that, otherwise use the default formatter.
320
      $formatter = !empty($field_type_info['default_token_formatter']) ? $field_type_info['default_token_formatter'] : $field_type_info['default_formatter'];
321

    
322
      // Now that we have a formatter, fill in all the settings.
323
      $display['type'] = $formatter;
324
      $formatter_info = field_info_formatter_types($formatter);
325
      $display['settings'] = isset($formatter_info['settings']) ? $formatter_info['settings'] : array();
326
      $display['settings']['label'] = 'hidden';
327
      $display['module'] = $formatter_info['module'];
328
    }
329
  }
330
}
331

    
332
/**
333
 * Implements hook_field_create_instance().
334
 */
335
function token_field_create_instance($instance) {
336
  token_clear_cache();
337
}
338

    
339
/**
340
 * Implements hook_field_update_instance().
341
 */
342
function token_field_update_instance($instance) {
343
  token_clear_cache();
344
}
345

    
346
/**
347
 * Implements hook_field_delete_instance().
348
 */
349
function token_field_delete_instance($instance) {
350
  token_clear_cache();
351
}
352

    
353
/**
354
 * Clear token caches and static variables.
355
 */
356
function token_clear_cache() {
357
  if (db_table_exists('cache_token')) {
358
    cache_clear_all('*', 'cache_token', TRUE);
359
  }
360
  drupal_static_reset('token_get_info');
361
  drupal_static_reset('token_get_global_token_types');
362
  drupal_static_reset('token_get_entity_mapping');
363
  drupal_static_reset('token_build_tree');
364
  drupal_static_reset('_token_profile_fields');
365
  drupal_static_reset('token_menu_link_load');
366
  drupal_static_reset('token_book_link_load');
367
  drupal_static_reset('token_node_menu_link_load');
368
  drupal_static_reset('_token_field_info');
369
}
370

    
371
/**
372
 * Return an array of entity type to token type mappings.
373
 *
374
 * Why do we need this? Because when the token API was moved to core we did not
375
 * re-use the entity type as the base name for taxonomy terms and vocabulary
376
 * tokens.
377
 *
378
 * @see token_entity_info_alter()
379
 * @see http://drupal.org/node/737726
380
 */
381
function token_get_entity_mapping($value_type = 'token', $value = NULL, $fallback = FALSE) {
382
  $mapping = &drupal_static(__FUNCTION__, array());
383

    
384
  if (empty($mapping)) {
385
    foreach (entity_get_info() as $entity_type => $info) {
386
      $mapping[$entity_type] = !empty($info['token type']) ? $info['token type'] : $entity_type;
387
    }
388
    // Allow modules to alter the mapping array.
389
    drupal_alter('token_entity_mapping', $mapping);
390
  }
391

    
392
  if (!isset($value)) {
393
    return $value_type == 'token' ? array_flip($mapping) : $mapping;
394
  }
395
  elseif ($value_type == 'token') {
396
    $return = array_search($value, $mapping);
397
    return $return !== FALSE ? $return : ($fallback ? $value : FALSE);
398
  }
399
  elseif ($value_type == 'entity') {
400
    return isset($mapping[$value]) ? $mapping[$value] : ($fallback ? $value : FALSE);
401
  }
402
}
403

    
404
/**
405
 * Implements hook_entity_info_alter().
406
 *
407
 * Because some token types to do not match their entity type names, we have to
408
 * map them to the proper type. This is purely for other modules' benefit.
409
 *
410
 * @see token_get_entity_mapping()
411
 * @see http://drupal.org/node/737726
412
 */
413
function token_entity_info_alter(&$info) {
414
  foreach (array_keys($info) as $entity_type) {
415
    // Add a token view mode if it does not already exist.
416
    if (!empty($info[$entity_type]['view modes']) && !isset($info[$entity_type]['view modes']['token'])) {
417
      $info[$entity_type]['view modes']['token'] = array(
418
        'label' => t('Tokens'),
419
        'custom settings' => FALSE,
420
      );
421
    }
422

    
423
    if (!empty($info[$entity_type]['token type'])) {
424
      // If the entity's token type is already defined, great!
425
      continue;
426
    }
427

    
428
    // Fill in default token types for entities.
429
    switch ($entity_type) {
430
      case 'taxonomy_term':
431
      case 'taxonomy_vocabulary':
432
        // Stupid taxonomy token types...
433
        $info[$entity_type]['token type'] = str_replace('taxonomy_', '', $entity_type);
434
        break;
435
      default:
436
        // By default the token type is the same as the entity type.
437
        $info[$entity_type]['token type'] = $entity_type;
438
        break;
439
    }
440
  }
441
}
442

    
443
/**
444
 * Implements hook_module_implements_alter().
445
 *
446
 * Adds missing token support for core modules.
447
 */
448
function token_module_implements_alter(&$implementations, $hook) {
449
  module_load_include('inc', 'token', 'token.tokens');
450

    
451
  if ($hook == 'tokens' || $hook == 'token_info' || $hook == 'token_info_alter' || $hook == 'tokens_alter') {
452
    foreach (_token_core_supported_modules() as $module) {
453
      if (module_exists($module) && function_exists($module . '_' . $hook)) {
454
        $implementations[$module] = FALSE;
455
      }
456
    }
457
    // Move token.module to get included first since it is responsible for
458
    // other modules.
459
    unset($implementations['token']);
460
    $implementations = array_merge(array('token' => 'tokens'), $implementations);
461
  }
462
}
463

    
464
/**
465
 * Implements hook_flush_caches().
466
 */
467
function token_flush_caches() {
468
  if (db_table_exists('cache_token')) {
469
    return array('cache_token');
470
  }
471
}
472

    
473
/**
474
 * Retrieve, sort, store token info from the cache.
475
 *
476
 * @param $token_type
477
 *   The optional token type that if specified will return
478
 *   $info['types'][$token_type].
479
 * @param $token
480
 *   The optional token name if specified will return
481
 *   $info['tokens'][$token_type][$token].
482
 *
483
 * @return
484
 *   An array of all token information from hook_token_info(), or the array
485
 *   of a token type or specific token.
486
 *
487
 * @see hook_token_info()
488
 * @see hook_token_info_alter()
489
 */
490
function token_get_info($token_type = NULL, $token = NULL) {
491
  global $language;
492

    
493
  // Use the advanced drupal_static() pattern, since this is called very often.
494
  static $drupal_static_fast;
495
  if (!isset($drupal_static_fast)) {
496
    $drupal_static_fast['token_info'] = &drupal_static(__FUNCTION__);
497
  }
498
  $token_info = &$drupal_static_fast['token_info'];
499

    
500
  if (empty($token_info)) {
501
    $cid = "info:{$language->language}";
502

    
503
    if ($cache = cache_get($cid, 'cache_token')) {
504
      $token_info = $cache->data;
505
    }
506
    else {
507
      $token_info = token_info();
508

    
509
      foreach (array_keys($token_info['types']) as $type_key) {
510
        if (isset($token_info['types'][$type_key]['type'])) {
511
          $base_type = $token_info['types'][$type_key]['type'];
512
          // If this token type extends another token type, then merge in
513
          // the base token type's tokens.
514
          if (isset($token_info['tokens'][$base_type])) {
515
            $token_info['tokens'] += array($type_key => array());
516
            $token_info['tokens'][$type_key] += $token_info['tokens'][$base_type];
517
          }
518
        }
519
        else {
520
          // Add a 'type' value to each token type so we can properly use
521
          // token_type_load().
522
          $token_info['types'][$type_key]['type'] = $type_key;
523
        }
524
      }
525

    
526
      // Pre-sort tokens.
527
      uasort($token_info['types'], 'token_asort_tokens');
528
      foreach (array_keys($token_info['tokens']) as $type) {
529
        uasort($token_info['tokens'][$type], 'token_asort_tokens');
530
      }
531

    
532
      // Store info in cache for future use.
533
      cache_set($cid, $token_info, 'cache_token');
534
    }
535
  }
536

    
537
  if (isset($token_type) && isset($token)) {
538
    return isset($token_info['tokens'][$token_type][$token]) ? $token_info['tokens'][$token_type][$token] : NULL;
539
  }
540
  elseif (isset($token_type)) {
541
    return isset($token_info['types'][$token_type]) ? $token_info['types'][$token_type] : NULL;
542
  }
543
  else {
544
    return $token_info;
545
  }
546
}
547

    
548
/**
549
 * Return the module responsible for a token.
550
 *
551
 * @param string $type
552
 *   The token type.
553
 * @param string $name
554
 *   The token name.
555
 *
556
 * @return mixed
557
 *   The value of $info['tokens'][$type][$name]['module'] from token_get_info(),
558
 *   or NULL if the value does not exist.
559
 */
560
function _token_module($type, $name) {
561
  $token_info = token_get_info($type, $name);
562
  return isset($token_info['module']) ? $token_info['module'] : NULL;
563
}
564

    
565
/**
566
 * uasort() callback to sort tokens by the 'name' property.
567
 */
568
function token_asort_tokens($token_a, $token_b) {
569
  return strnatcmp($token_a['name'], $token_b['name']);
570
}
571

    
572
/**
573
 * Get a list of token types that can be used without any context (global).
574
 *
575
 * @return
576
 *   An array of global token types.
577
 */
578
function token_get_global_token_types() {
579
  $global_types = &drupal_static(__FUNCTION__, array());
580

    
581
  if (empty($global_types)) {
582
    $token_info = token_get_info();
583
    foreach ($token_info['types'] as $type => $type_info) {
584
      // If the token types has not specified that 'needs-data' => TRUE, then
585
      // it is a global token type that will always be replaced in any context.
586
      if (empty($type_info['needs-data'])) {
587
        $global_types[] = $type;
588
      }
589
    }
590
  }
591

    
592
  return $global_types;
593
}
594

    
595
/**
596
 * Validate an tokens in raw text based on possible contexts.
597
 *
598
 * @param $value
599
 *   A string with the raw text containing the raw tokens, or an array of
600
 *   tokens from token_scan().
601
 * @param $tokens
602
 *   An array of token types that will be used when token replacement is
603
 *   performed.
604
 * @return
605
 *   An array with the invalid tokens in their original raw forms.
606
 */
607
function token_get_invalid_tokens_by_context($value, $valid_types = array()) {
608
  if (in_array('all', $valid_types)) {
609
    $info = token_get_info();
610
    $valid_types = array_keys($info['types']);
611
  }
612
  else {
613
    // Add the token types that are always valid in global context.
614
    $valid_types = array_merge($valid_types, token_get_global_token_types());
615
  }
616

    
617
  $invalid_tokens = array();
618
  $value_tokens = is_string($value) ? token_scan($value) : $value;
619

    
620
  foreach ($value_tokens as $type => $tokens) {
621
    if (!in_array($type, $valid_types)) {
622
      // If the token type is not a valid context, its tokens are invalid.
623
      $invalid_tokens = array_merge($invalid_tokens, array_values($tokens));
624
    }
625
    else {
626
      // Check each individual token for validity.
627
      $invalid_tokens = array_merge($invalid_tokens, token_get_invalid_tokens($type, $tokens));
628
    }
629
  }
630

    
631
  array_unique($invalid_tokens);
632
  return $invalid_tokens;
633
}
634

    
635
/**
636
 * Validate an array of tokens based on their token type.
637
 *
638
 * @param $type
639
 *   The type of tokens to validate (e.g. 'node', etc.)
640
 * @param $tokens
641
 *   A keyed array of tokens, and their original raw form in the source text.
642
 * @return
643
 *   An array with the invalid tokens in their original raw forms.
644
 */
645
function token_get_invalid_tokens($type, $tokens) {
646
  $token_info = token_get_info();
647
  $invalid_tokens = array();
648

    
649
  foreach ($tokens as $token => $full_token) {
650
    // Split token up if it has chains.
651
    $parts = explode(':', $token, 2);
652

    
653
    if (!isset($token_info['tokens'][$type][$parts[0]])) {
654
      // This is an invalid token (not defined).
655
      $invalid_tokens[] = $full_token;
656
    }
657
    elseif (count($parts) == 2) {
658
      $sub_token_info = $token_info['tokens'][$type][$parts[0]];
659
      if (!empty($sub_token_info['dynamic'])) {
660
        // If this token has been flagged as a dynamic token, skip it.
661
        continue;
662
      }
663
      elseif (empty($sub_token_info['type'])) {
664
        // If the token has chains, but does not support it, it is invalid.
665
        $invalid_tokens[] = $full_token;
666
      }
667
      else {
668
        // Resursively check the chained tokens.
669
        $sub_tokens = token_find_with_prefix(array($token => $full_token), $parts[0]);
670
        $invalid_tokens = array_merge($invalid_tokens, token_get_invalid_tokens($sub_token_info['type'], $sub_tokens));
671
      }
672
    }
673
  }
674

    
675
  return $invalid_tokens;
676
}
677

    
678
/**
679
 * Validate a form element that should have tokens in it.
680
 *
681
 * Form elements that want to add this validation should have the #token_types
682
 * parameter defined.
683
 *
684
 * For example:
685
 * @code
686
 * $form['my_node_text_element'] = array(
687
 *   '#type' => 'textfield',
688
 *   '#title' => t('Some text to token-ize that has a node context.'),
689
 *   '#default_value' => 'The title of this node is [node:title].',
690
 *   '#element_validate' => array('token_element_validate'),
691
 *   '#token_types' => array('node'),
692
 *   '#min_tokens' => 1,
693
 *   '#max_tokens' => 10,
694
 * );
695
 * @endcode
696
 */
697
function token_element_validate(&$element, &$form_state) {
698
  $value = isset($element['#value']) ? $element['#value'] : $element['#default_value'];
699

    
700
  if (!drupal_strlen($value)) {
701
    // Empty value needs no further validation since the element should depend
702
    // on using the '#required' FAPI property.
703
    return $element;
704
  }
705

    
706
  $tokens = token_scan($value);
707
  $title = empty($element['#title']) ? $element['#parents'][0] : $element['#title'];
708
  // @todo Find old Drupal 6 style tokens and add them to invalid tokens.
709

    
710
  // Validate if an element must have a minimum number of tokens.
711
  if (isset($element['#min_tokens']) && count($tokens) < $element['#min_tokens']) {
712
    // @todo Change this error message to include the minimum number.
713
    $error = format_plural($element['#min_tokens'], 'The %element-title cannot contain fewer than one token.', 'The %element-title must contain at least @count tokens.', array('%element-title' => $title));
714
    form_error($element, $error);
715
  }
716

    
717
  // Validate if an element must have a maximum number of tokens.
718
  if (isset($element['#max_tokens']) && count($tokens) > $element['#max_tokens']) {
719
    // @todo Change this error message to include the maximum number.
720
    $error = format_plural($element['#max_tokens'], 'The %element-title must contain as most one token.', 'The %element-title must contain at most @count tokens.', array('%element-title' => $title));
721
    form_error($element, $error);
722
  }
723

    
724
  // Check if the field defines specific token types.
725
  if (isset($element['#token_types'])) {
726
    $invalid_tokens = token_get_invalid_tokens_by_context($tokens, $element['#token_types']);
727
    if ($invalid_tokens) {
728
      form_error($element, t('The %element-title is using the following invalid tokens: @invalid-tokens.', array('%element-title' => $title, '@invalid-tokens' => implode(', ', $invalid_tokens))));
729
    }
730
  }
731

    
732
  return $element;
733
}
734

    
735
/**
736
 * Deprecated. Use token_element_validate() instead.
737
 */
738
function token_element_validate_token_context(&$element, &$form_state) {
739
  return token_element_validate($element, $form_state);
740
}
741

    
742
/**
743
 * Implements hook_form_FORM_ID_alter().
744
 */
745
function token_form_field_ui_field_edit_form_alter(&$form, $form_state) {
746
  if (!isset($form['instance']) || !empty($form['#field']['locked'])) {
747
    return;
748
  }
749

    
750
  if (($form['#field']['type'] == 'file' || $form['#field']['type'] == 'image') && isset($form['instance']['settings']['file_directory']) && !module_exists('filefield_paths')) {
751
    // GAH! We can only support global tokens in the upload file directory path.
752
    $form['instance']['settings']['file_directory']['#element_validate'][] = 'token_element_validate';
753
    $form['instance']['settings']['file_directory'] += array('#token_types' => array());
754
    $form['instance']['settings']['file_directory']['#description'] .= ' ' . t('This field supports tokens.');
755
  }
756

    
757
  // Note that the description is tokenized via token_field_widget_form_alter().
758
  $form['instance']['description']['#description'] .= '<br />' . t('This field supports tokens.');
759
  $form['instance']['description']['#element_validate'][] = 'token_element_validate';
760
  $form['instance']['description'] += array('#token_types' => array());
761

    
762
  $form['instance']['settings']['token_tree'] = array(
763
    '#theme' => 'token_tree',
764
    '#token_types' => array(),
765
    '#dialog' => TRUE,
766
    '#weight' => $form['instance']['description']['#weight'] + 0.5,
767
  );
768
}
769

    
770
/**
771
 * Implements hook_form_FORM_ID_alter().
772
 *
773
 * Alters the configure action form to add token context validation and
774
 * adds the token tree for a better token UI and selection.
775
 */
776
function token_form_system_actions_configure_alter(&$form, $form_state) {
777
  $action = actions_function_lookup($form['actions_action']['#value']);
778

    
779
  switch ($action) {
780
    case 'system_message_action':
781
    case 'system_send_email_action':
782
    case 'system_goto_action':
783
      $form['token_tree'] = array(
784
        '#theme' => 'token_tree',
785
        '#token_types' => 'all',
786
        '#dialog' => TRUE,
787
        '#weight' => 100,
788
      );
789
      // @todo Add token validation to the action fields that can use tokens.
790
      break;
791
  }
792
}
793

    
794
/**
795
 * Implements hook_form_FORM_ID_alter().
796
 *
797
 * Alters the user e-mail fields to add token context validation and
798
 * adds the token tree for a better token UI and selection.
799
 */
800
function token_form_user_admin_settings_alter(&$form, &$form_state) {
801
  $email_token_help = t('Available variables are: [site:name], [site:url], [user:name], [user:mail], [site:login-url], [site:url-brief], [user:edit-url], [user:one-time-login-url], [user:cancel-url].');
802

    
803
  foreach (element_children($form) as $key) {
804
    $element = &$form[$key];
805

    
806
    // Remove the crummy default token help text.
807
    if (!empty($element['#description'])) {
808
      $element['#description'] = trim(str_replace($email_token_help, t('The list of available tokens that can be used in e-mails is provided below.'), $element['#description']));
809
    }
810

    
811
    switch ($key) {
812
      case 'email_admin_created':
813
      case 'email_pending_approval':
814
      case 'email_no_approval_required':
815
      case 'email_password_reset':
816
      case 'email_cancel_confirm':
817
        // Do nothing, but allow execution to continue.
818
        break;
819
      case 'email_activated':
820
      case 'email_blocked':
821
      case 'email_canceled':
822
        // These fieldsets have their e-mail elements inside a 'settings'
823
        // sub-element, so switch to that element instead.
824
        $element = &$form[$key]['settings'];
825
        break;
826
      default:
827
        continue 2;
828
    }
829

    
830
    foreach (element_children($element) as $sub_key) {
831
      if (!isset($element[$sub_key]['#type'])) {
832
        continue;
833
      }
834
      elseif ($element[$sub_key]['#type'] == 'textfield' && substr($sub_key, -8) === '_subject') {
835
        // Add validation to subject textfields.
836
        $element[$sub_key]['#element_validate'][] = 'token_element_validate';
837
        $element[$sub_key] += array('#token_types' => array('user'));
838
      }
839
      elseif ($element[$sub_key]['#type'] == 'textarea' && substr($sub_key, -5) === '_body') {
840
        // Add validation to body textareas.
841
        $element[$sub_key]['#element_validate'][] = 'token_element_validate';
842
        $element[$sub_key] += array('#token_types' => array('user'));
843
      }
844
    }
845
  }
846

    
847
  // Add the token tree UI.
848
  $form['email']['token_tree'] = array(
849
    '#theme' => 'token_tree',
850
    '#token_types' => array('user'),
851
    '#show_restricted' => TRUE,
852
    '#dialog' => TRUE,
853
    '#weight' => 90,
854
  );
855
}
856

    
857
/**
858
 * Build a tree array of tokens used for themeing or information.
859
 *
860
 * @param $token_type
861
 *   The token type.
862
 * @param $flat_tree
863
 *   A boolean if TRUE will only make a flat array of tokens, otherwise
864
 *   child tokens will be inside the 'children' parameter of a token.
865
 * @param $show_restricted
866
 *   A boolean if TRUE will show restricted tokens. Otherwise they will be
867
 *   hidden. Default is FALSE.
868
 * @param $recursion_limit
869
 *   An integer with the maximum number of token levels to recurse.
870
 * @param $parents
871
 *   An optional array with the current parents of the tokens.
872
 */
873
function token_build_tree($token_type, array $options = array()) {
874
  global $language;
875

    
876
  // Static cache of already built token trees.
877
  $trees = &drupal_static(__FUNCTION__, array());
878

    
879
  $options += array(
880
    'restricted' => FALSE,
881
    'depth' => 4,
882
    'data' => array(),
883
    'values' => FALSE,
884
    'flat' => FALSE,
885
  );
886

    
887
  // Do not allow past the maximum token information depth.
888
  $options['depth'] = min($options['depth'], TOKEN_MAX_DEPTH);
889

    
890
  // If $token_type is an entity, make sure we are using the actual token type.
891
  if ($entity_token_type = token_get_entity_mapping('entity', $token_type)) {
892
    $token_type = $entity_token_type;
893
  }
894

    
895
  $tree_cid = "tree:{$token_type}:{$language->language}:{$options['depth']}";
896

    
897
  // If we do not have this base tree in the static cache, check {cache_token}
898
  // otherwise generate and store it in the cache.
899
  if (!isset($trees[$tree_cid])) {
900
    if ($cache = cache_get($tree_cid, 'cache_token')) {
901
      $trees[$tree_cid] = $cache->data;
902
    }
903
    else {
904
      $options['parents'] = array();
905
      $trees[$tree_cid] = _token_build_tree($token_type, $options);
906
      cache_set($tree_cid, $trees[$tree_cid], 'cache_token');
907
    }
908
  }
909

    
910
  $tree = $trees[$tree_cid];
911

    
912
  // If the user has requested a flat tree, convert it.
913
  if (!empty($options['flat'])) {
914
    $tree = token_flatten_tree($tree);
915
  }
916

    
917
  // Fill in token values.
918
  if (!empty($options['values'])) {
919
    $token_values = array();
920
    foreach ($tree as $token => $token_info) {
921
      if (!empty($token_info['dynamic']) || !empty($token_info['restricted'])) {
922
        continue;
923
      }
924
      elseif (!isset($token_info['value'])) {
925
        $token_values[$token_info['token']] = $token;
926
      }
927
    }
928
    if (!empty($token_values)) {
929
      $token_values = token_generate($token_type, $token_values, $options['data']);
930
      foreach ($token_values as $token => $replacement) {
931
        $tree[$token]['value'] = $replacement;
932
      }
933
    }
934
  }
935

    
936
  return $tree;
937
}
938

    
939
/**
940
 * Flatten a token tree.
941
 */
942
function token_flatten_tree($tree) {
943
  $result = array();
944
  foreach ($tree as $token => $token_info) {
945
    $result[$token] = $token_info;
946
    if (isset($token_info['children']) && is_array($token_info['children'])) {
947
      $result += token_flatten_tree($token_info['children']);
948
      // unset($result[$token]['children']);
949
    }
950
  }
951
  return $result;
952
}
953

    
954
/**
955
 * Generate a token tree.
956
 */
957
function _token_build_tree($token_type, array $options) {
958
  $options += array(
959
    'parents' => array(),
960
  );
961

    
962
  $info = token_get_info();
963
  if ($options['depth'] <= 0 || !isset($info['types'][$token_type]) || !isset($info['tokens'][$token_type])) {
964
    return array();
965
  }
966

    
967
  $tree = array();
968
  foreach ($info['tokens'][$token_type] as $token => $token_info) {
969
    // Build the raw token string.
970
    $token_parents = $options['parents'];
971
    if (empty($token_parents)) {
972
      // If the parents array is currently empty, assume the token type is its
973
      // parent.
974
      $token_parents[] = $token_type;
975
    }
976
    elseif (in_array($token, array_slice($token_parents, 1))) {
977
      // Prevent duplicate recursive tokens. For example, this will prevent
978
      // the tree from generating the following tokens or deeper:
979
      // [comment:parent:parent]
980
      // [comment:parent:root:parent]
981
      continue;
982
    }
983

    
984
    $token_parents[] = $token;
985
    if (!empty($token_info['dynamic'])) {
986
      $token_parents[] = '?';
987
    }
988
    $raw_token = '[' . implode(':', $token_parents) . ']';
989
    $tree[$raw_token] = $token_info;
990
    $tree[$raw_token]['raw token'] = $raw_token;
991

    
992
    // Add the token's real name (leave out the base token type).
993
    $tree[$raw_token]['token'] = implode(':', array_slice($token_parents, 1));
994

    
995
    // Add the token's parent as its raw token value.
996
    if (!empty($options['parents'])) {
997
      $tree[$raw_token]['parent'] = '[' . implode(':', $options['parents']) . ']';
998
    }
999

    
1000
    // Fetch the child tokens.
1001
    if (!empty($token_info['type'])) {
1002
      $child_options = $options;
1003
      $child_options['depth']--;
1004
      $child_options['parents'] = $token_parents;
1005
      $tree[$raw_token]['children'] = _token_build_tree($token_info['type'], $child_options);
1006
    }
1007
  }
1008

    
1009
  return $tree;
1010
}
1011

    
1012
/**
1013
 * Get a translated menu link by its mlid, without access checking.
1014
 *
1015
 * This function is a copy of menu_link_load() but with its own cache and a
1016
 * simpler query to load the link. This also skips normal menu link access
1017
 * checking by using _token_menu_link_translate().
1018
 *
1019
 * @param $mlid
1020
 *   The mlid of the menu item.
1021
 *
1022
 * @return
1023
 *   A menu link translated for rendering.
1024
 *
1025
 * @see menu_link_load()
1026
 * @see _token_menu_link_translate()
1027
 */
1028
function token_menu_link_load($mlid) {
1029
  $cache = &drupal_static(__FUNCTION__, array());
1030

    
1031
  if (!is_numeric($mlid)) {
1032
    return FALSE;
1033
  }
1034

    
1035
  if (!isset($cache[$mlid])) {
1036
    $item = db_query("SELECT * FROM {menu_links} ml LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = :mlid", array(':mlid' => $mlid))->fetchAssoc();
1037
    if (!empty($item)) {
1038
      _token_menu_link_translate($item);
1039
    }
1040
    $cache[$mlid] = $item;
1041
  }
1042

    
1043
  return $cache[$mlid];
1044
}
1045

    
1046
/**
1047
 * Get a translated book menu link by its mlid, without access checking.
1048
 *
1049
 * This function is a copy of book_link_load() but with its own cache and a
1050
 * simpler query to load the link. This also skips normal menu link access
1051
 * checking by using _token_menu_link_translate().
1052
 *
1053
 * @param $mlid
1054
 *   The mlid of the book menu item.
1055
 *
1056
 * @return
1057
 *   A book menu link translated for rendering.
1058
 *
1059
 * @see book_link_load()
1060
 * @see _token_menu_link_translate()
1061
 */
1062
function token_book_link_load($mlid) {
1063
  $cache = &drupal_static(__FUNCTION__, array());
1064

    
1065
  if (!is_numeric($mlid)) {
1066
    return FALSE;
1067
  }
1068

    
1069
  if (!isset($cache[$mlid])) {
1070
    $item = db_query("SELECT * FROM {menu_links} ml INNER JOIN {book} b ON b.mlid = ml.mlid LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = :mlid", array(':mlid' => $mlid))->fetchAssoc();
1071
    if (!empty($item)) {
1072
      _token_menu_link_translate($item);
1073
    }
1074
    $cache[$mlid] = $item;
1075
  }
1076

    
1077
  return $cache[$mlid];
1078
}
1079

    
1080
function _token_menu_link_translate(&$item) {
1081
  $map = array();
1082

    
1083
  if (!is_array($item['options'])) {
1084
    $item['options'] = unserialize($item['options']);
1085
  }
1086

    
1087
  if ($item['external']) {
1088
    $item['access'] = 1;
1089
    $item['href'] = $item['link_path'];
1090
    $item['title'] = $item['link_title'];
1091
    $item['localized_options'] = $item['options'];
1092
  }
1093
  else {
1094
    // Complete the path of the menu link with elements from the current path,
1095
    // if it contains dynamic placeholders (%).
1096
    $map = explode('/', $item['link_path']);
1097
    if (strpos($item['link_path'], '%') !== FALSE) {
1098
      // Invoke registered to_arg callbacks.
1099
      if (!empty($item['to_arg_functions'])) {
1100
        _menu_link_map_translate($map, $item['to_arg_functions']);
1101
      }
1102
    }
1103
    $item['href'] = implode('/', $map);
1104

    
1105
    // Skip links containing untranslated arguments.
1106
    if (strpos($item['href'], '%') !== FALSE) {
1107
      $item['access'] = FALSE;
1108
      return FALSE;
1109
    }
1110

    
1111
    $item['access'] = TRUE;
1112
    _menu_item_localize($item, $map, TRUE);
1113
  }
1114

    
1115
  // Allow other customizations - e.g. adding a page-specific query string to the
1116
  // options array. For performance reasons we only invoke this hook if the link
1117
  // has the 'alter' flag set in the options array.
1118
  if (!empty($item['options']['alter'])) {
1119
    drupal_alter('translated_menu_link', $item, $map);
1120
  }
1121

    
1122
  return $map;
1123
}
1124

    
1125
/**
1126
 * Prepare a string for use as a valid token name.
1127
 *
1128
 * @param $name
1129
 *   The token name to clean.
1130
 * @return
1131
 *   The cleaned token name.
1132
 */
1133
function token_clean_token_name($name) {
1134
  static $names = array();
1135

    
1136
  if (!isset($names[$name])) {
1137
    $cleaned_name = strtr($name, array(' ' => '-', '_' => '-', '/' => '-', '[' => '-', ']' => ''));
1138
    $cleaned_name = preg_replace('/[^\w\-]/i', '', $cleaned_name);
1139
    $cleaned_name = trim($cleaned_name, '-');
1140
    $names[$name] = $cleaned_name;
1141
  }
1142

    
1143
  return $names[$name];
1144
}
1145

    
1146
/**
1147
 * Do not use this function yet. Its API has not been finalized.
1148
 */
1149
function token_render_array(array $array, array $options = array()) {
1150
  $rendered = array();
1151
  foreach (element_children($array) as $key) {
1152
    $value = $array[$key];
1153
    $rendered[] = is_array($value) ? render($value) : (string) $value;
1154
  }
1155
  if (!empty($options['sanitize'])) {
1156
    $rendered = array_map('check_plain', $rendered);
1157
  }
1158
  $join = isset($options['join']) ? $options['join'] : ', ';
1159
  return implode($join, $rendered);
1160
}
1161

    
1162
/**
1163
 * Do not use this function yet. Its API has not been finalized.
1164
 */
1165
function token_render_array_value($value, array $options = array()) {
1166
  $rendered = is_array($value) ? render($value) : (string) $value;
1167
  if (!empty($options['sanitize'])) {
1168
    $rendered = check_plain($rendered);
1169
  }
1170
  return $rendered;
1171
}
1172

    
1173
/**
1174
 * Copy of drupal_render_cache_get() that does not care about request method.
1175
 */
1176
function token_render_cache_get($elements) {
1177
  if (!$cid = drupal_render_cid_create($elements)) {
1178
    return FALSE;
1179
  }
1180
  $bin = isset($elements['#cache']['bin']) ? $elements['#cache']['bin'] : 'cache';
1181

    
1182
  if (!empty($cid) && $cache = cache_get($cid, $bin)) {
1183
    // Add additional libraries, JavaScript, CSS and other data attached
1184
    // to this element.
1185
    if (isset($cache->data['#attached'])) {
1186
      drupal_process_attached($cache->data);
1187
    }
1188
    // Return the rendered output.
1189
    return $cache->data['#markup'];
1190
  }
1191
  return FALSE;
1192
}
1193

    
1194
/**
1195
 * Coyp of drupal_render_cache_set() that does not care about request method.
1196
 */
1197
function token_render_cache_set(&$markup, $elements) {
1198
  // This should only run of drupal_render_cache_set() did not.
1199
  if (in_array($_SERVER['REQUEST_METHOD'], array('GET', 'HEAD'))) {
1200
    return FALSE;
1201
  }
1202

    
1203
  $original_method = $_SERVER['REQUEST_METHOD'];
1204
  $_SERVER['REQUEST_METHOD'] = 'GET';
1205
  drupal_render_cache_set($markup, $elements);
1206
  $_SERVER['REQUEST_METHOD'] = $original_method;
1207
}
1208

    
1209
function token_menu_link_load_all_parents($mlid) {
1210
  $cache = &drupal_static(__FUNCTION__, array());
1211

    
1212
  if (!is_numeric($mlid)) {
1213
    return array();
1214
  }
1215

    
1216
  if (!isset($cache[$mlid])) {
1217
    $cache[$mlid] = array();
1218
    $plid = db_query("SELECT plid FROM {menu_links} WHERE mlid = :mlid", array(':mlid' => $mlid))->fetchField();
1219
    while ($plid && $parent = token_menu_link_load($plid)) {
1220
      $cache[$mlid] = array($plid => $parent['title']) + $cache[$mlid];
1221
      $plid = $parent['plid'];
1222
    }
1223
  }
1224

    
1225
  return $cache[$mlid];
1226
}
1227

    
1228
function token_taxonomy_term_load_all_parents($tid) {
1229
  $cache = &drupal_static(__FUNCTION__, array());
1230

    
1231
  if (!is_numeric($tid)) {
1232
    return array();
1233
  }
1234

    
1235
  if (!isset($cache[$tid])) {
1236
    $cache[$tid] = array();
1237
    $parents = taxonomy_get_parents_all($tid);
1238
    array_shift($parents); // Remove this term from the array.
1239
    $parents = array_reverse($parents);
1240
    foreach ($parents as $term) {
1241
      $cache[$tid][$term->tid] = entity_label('taxonomy_term', $term);
1242
    }
1243
  }
1244

    
1245
  return $cache[$tid];
1246
}
1247

    
1248
/**
1249
 * Load the preferred menu link associated with a node.
1250
 *
1251
 * @param $node
1252
 *   A node object.
1253
 *
1254
 * @return
1255
 *   A menu link array from token_menu_link_load() or FALSE if a menu link was
1256
 *   not found.
1257
 *
1258
 * @see menu_node_prepare()
1259
 * @see token_menu_link_load()
1260
 */
1261
function token_node_menu_link_load($node) {
1262
  $cache = &drupal_static(__FUNCTIon__, array());
1263

    
1264
  if (!isset($cache[$node->nid])) {
1265
    $mlid = FALSE;
1266

    
1267
    // Nodes do not have their menu links loaded via menu_node_load().
1268
    if (!isset($node->menu)) {
1269
      // We need to clone the node as menu_node_prepare() may cause data loss.
1270
      // @see http://drupal.org/node/1317926
1271
      $menu_node = clone $node;
1272
      menu_node_prepare($menu_node);
1273
      $mlid = !empty($menu_node->menu['mlid']) ? $menu_node->menu['mlid'] : FALSE;
1274
    }
1275
    else {
1276
      $mlid = !empty($node->menu['mlid']) ? $node->menu['mlid'] : FALSE;
1277
    }
1278

    
1279
    $cache[$node->nid] = $mlid;
1280
  }
1281

    
1282
  return $cache[$node->nid] ? token_menu_link_load($cache[$node->nid]) : FALSE;
1283
}