views.module 82.7 KB
Newer Older
merlinofchaos's avatar
merlinofchaos committed
1
2
3
4
5
6
7
8
9
10
11
<?php

/**
 * @file
 * Primarily Drupal hooks and global API functions to manipulate views.
 *
 * This is the main module file for Views. The main entry points into
 * this module are views_page() and views_block(), where it handles
 * incoming page and block requests.
 */

12
use Drupal\Core\Database\Query\AlterableInterface;
13
use Drupal\views\TempStore\UserTempStore;
14
use Drupal\views\View;
15
use Drupal\Component\Plugin\PluginManagerInterface;
16
use Drupal\views\Plugin\Type\ViewsPluginManager;
17

merlinofchaos's avatar
merlinofchaos committed
18
19
20
21
22
23
24
/**
 * Advertise the current views api version
 */
function views_api_version() {
  return '3.0';
}

25
26
27
28
29
30
31
32
33
34
35
36
37
38
/**
 * Returns a list of Drupal core modules.
 *
 * @return array
 */
function views_core_modules() {
  return array(
    'aggregator',
    'book',
    'comment',
    'contact',
    'field',
    'filter',
    'file',
39
    'language',
40
41
42
43
44
45
46
47
48
49
50
    'locale',
    'node',
    'search',
    'statistics',
    'system',
    'taxonomy',
    'translation',
    'user'
  );
}

51
52
53
54
55
56
/**
 * Implements hook_init().
 */
function views_init() {
  $path = drupal_get_path('module', 'views');
  $loader = drupal_classloader();
57
58
59
  // Just register enabled modules.
  $modules = array_intersect(views_core_modules(), module_list('module_enabled'));
  foreach ($modules as $module) {
60
61
62
    $function = $module . '_views_api';
    if (function_exists($function)) {
      $loader->registerNamespace('Views\\' . $module, DRUPAL_ROOT . '/' . $path . '/lib');
63
64
65
66
    }
  }
}

67
68
69
70
71
72
73
74
75
76
/**
 * Provides a TempStore for editing views.
 *
 * @return UserTempStore
 *   A TempStore object for the 'view' type.
 */
function views_temp_store() {
  return new UserTempStore('view');
}

77
/**
78
 * Implements hook_entity_info().
79
 */
80
81
function views_entity_info() {
  $return = array(
82
    'view' => array(
83
84
85
86
87
88
89
90
91
92
93
94
      'label' => t('View'),
      'entity class' => 'Drupal\views\View',
      'controller class' => 'Drupal\views\ViewStorageController',
      'form controller class' => array(
        'default' => 'Drupal\node\NodeFormController',
      ),
      'config prefix' => 'views.view',
      'fieldable' => FALSE,
      'entity keys' => array(
        'id' => 'name',
        'label' => 'human_name',
        'uuid' => 'uuid',
95
96
97
      ),
    ),
  );
98
99

  return $return;
100
101
}

merlinofchaos's avatar
merlinofchaos committed
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/**
 * Implements hook_forms().
 *
 * To provide distinct form IDs for Views forms, the View name and
 * specific display name are appended to the base ID,
 * views_form_views_form. When such a form is built or submitted, this
 * function will return the proper callback function to use for the given form.
 */
function views_forms($form_id, $args) {
  if (strpos($form_id, 'views_form_') === 0) {
    return array(
      $form_id => array(
        'callback' => 'views_form',
      ),
    );
  }
}

/**
 * Returns a form ID for a Views form using the name and display of the View.
 */
function views_form_id($view) {
  $parts = array(
    'views_form',
    $view->name,
    $view->current_display,
  );

  return implode('_', $parts);
}

/**
 * Views will not load plugins advertising a version older than this.
 */
function views_api_minimum_version() {
  return '2';
}

/**
 * Implement hook_theme(). Register views theming functions.
 */
function views_theme($existing, $type, $theme, $path) {
  $path = drupal_get_path('module', 'views');
145
  module_load_include('inc', 'views', 'theme/theme');
merlinofchaos's avatar
merlinofchaos committed
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265

  // Some quasi clever array merging here.
  $base = array(
    'file' => 'theme.inc',
    'path' => $path . '/theme',
  );

  // Our extra version of pager from pager.inc
  $hooks['views_mini_pager'] = $base + array(
    'variables' => array('tags' => array(), 'quantity' => 10, 'element' => 0, 'parameters' => array()),
    'pattern' => 'views_mini_pager__',
  );

  $variables = array(
    // For displays, we pass in a dummy array as the first parameter, since
    // $view is an object but the core contextual_preprocess() function only
    // attaches contextual links when the primary theme argument is an array.
    'display' => array('view_array' => array(), 'view' => NULL),
    'style' => array('view' => NULL, 'options' => NULL, 'rows' => NULL, 'title' => NULL),
    'row' => array('view' => NULL, 'options' => NULL, 'row' => NULL, 'field_alias' => NULL),
    'exposed_form' => array('view' => NULL, 'options' => NULL),
    'pager' => array(
      'view' => NULL, 'options' => NULL,
      'tags' => array(), 'quantity' => 10, 'element' => 0, 'parameters' => array()
    ),
  );

  // Default view themes
  $hooks['views_view_field'] = $base + array(
    'pattern' => 'views_view_field__',
    'variables' => array('view' => NULL, 'field' => NULL, 'row' => NULL),
  );
  $hooks['views_view_grouping'] = $base + array(
    'pattern' => 'views_view_grouping__',
    'variables' => array('view' => NULL, 'grouping' => NULL, 'grouping_level' => NULL, 'rows' => NULL, 'title' => NULL),
  );

  $plugins = views_fetch_plugin_data();

  // Register theme functions for all style plugins
  foreach ($plugins as $type => $info) {
    foreach ($info as $plugin => $def) {
      if (isset($def['theme']) && (!isset($def['register theme']) || !empty($def['register theme']))) {
        $hooks[$def['theme']] = array(
          'pattern' => $def['theme'] . '__',
          'file' => $def['theme file'],
          'path' => $def['theme path'],
          'variables' => $variables[$type],
        );

        $include = DRUPAL_ROOT . '/' . $def['theme path'] . '/' . $def['theme file'];
        if (file_exists($include)) {
          require_once $include;
        }

        if (!function_exists('theme_' . $def['theme'])) {
          $hooks[$def['theme']]['template'] = drupal_clean_css_identifier($def['theme']);
        }
      }
      if (isset($def['additional themes'])) {
        foreach ($def['additional themes'] as $theme => $theme_type) {
          if (empty($theme_type)) {
            $theme = $theme_type;
            $theme_type = $type;
          }

          $hooks[$theme] = array(
            'pattern' => $theme . '__',
            'file' => $def['theme file'],
            'path' => $def['theme path'],
            'variables' => $variables[$theme_type],
          );

          if (!function_exists('theme_' . $theme)) {
            $hooks[$theme]['template'] = drupal_clean_css_identifier($theme);
          }
        }
      }
    }
  }

  $hooks['views_form_views_form'] = $base + array(
    'render element' => 'form',
  );

  $hooks['views_exposed_form'] = $base + array(
    'template' => 'views-exposed-form',
    'pattern' => 'views_exposed_form__',
    'render element' => 'form',
  );

  $hooks['views_more'] = $base + array(
    'template' => 'views-more',
    'pattern' => 'views_more__',
    'variables' => array('more_url' => NULL, 'link_text' => 'more', 'view' => NULL),
  );

  // Add theme suggestions which are part of modules.
  foreach (views_get_module_apis() as $info) {
    if (isset($info['template path'])) {
      $hooks += _views_find_module_templates($hooks, $info['template path']);
    }
  }
  return $hooks;
}

/**
 * Scans a directory of a module for template files.
 *
 * @param $cache
 *   The existing cache of theme hooks to test against.
 * @param $path
 *   The path to search.
 *
 * @see drupal_find_theme_templates()
 */
function _views_find_module_templates($cache, $path) {
  $templates = array();
  $regex = '/' . '\.tpl\.php' . '$' . '/';

266
  // @todo Remove this once #1626580 is committed. For now, We need to remove
dawehner's avatar
dawehner committed
267
  //   the sites/* part of the path because drupal_system_listing() is already
268
269
  //   adding that.
  $path = preg_replace('/^sites\/all\//', '', $path);
dawehner's avatar
dawehner committed
270
271
  $config = str_replace('/', '\/', conf_path());
  $path = preg_replace('/^' . $config . '\//', '', $path);
272

merlinofchaos's avatar
merlinofchaos committed
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
  // Because drupal_system_listing works the way it does, we check for real
  // templates separately from checking for patterns.
  $files = drupal_system_listing($regex, $path, 'name', 0);
  foreach ($files as $template => $file) {
    // Chop off the remaining extensions if there are any. $template already
    // has the rightmost extension removed, but there might still be more,
    // such as with .tpl.php, which still has .tpl in $template at this point.
    if (($pos = strpos($template, '.')) !== FALSE) {
      $template = substr($template, 0, $pos);
    }
    // Transform - in filenames to _ to match function naming scheme
    // for the purposes of searching.
    $hook = strtr($template, '-', '_');
    if (isset($cache[$hook])) {
      $templates[$hook] = array(
        'template' => $template,
        'path' => dirname($file->filename),
        'includes' => isset($cache[$hook]['includes']) ? $cache[$hook]['includes'] : NULL,
      );
    }
    // Ensure that the pattern is maintained from base themes to its sub-themes.
    // Each sub-theme will have their templates scanned so the pattern must be
    // held for subsequent runs.
    if (isset($cache[$hook]['pattern'])) {
      $templates[$hook]['pattern'] = $cache[$hook]['pattern'];
    }
  }

  $patterns = array_keys($files);

  foreach ($cache as $hook => $info) {
    if (!empty($info['pattern'])) {
      // Transform _ in pattern to - to match file naming scheme
      // for the purposes of searching.
      $pattern = strtr($info['pattern'], '_', '-');

      $matches = preg_grep('/^'. $pattern .'/', $patterns);
      if ($matches) {
        foreach ($matches as $match) {
          $file = substr($match, 0, strpos($match, '.'));
          // Put the underscores back in for the hook name and register this pattern.
          $templates[strtr($file, '-', '_')] = array(
            'template' => $file,
            'path' => dirname($files[$match]->uri),
            'variables' => isset($info['variables']) ? $info['variables'] : NULL,
            'render element' => isset($info['render element']) ? $info['render element'] : NULL,
            'base hook' => $hook,
            'includes' => isset($info['includes']) ? $info['includes'] : NULL,
          );
        }
      }
    }
  }

  return $templates;
}

330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
/**
 * Returns a list of plugins and metadata about them.
 *
 * @return array
 *   An array keyed by PLUGIN_TYPE:PLUGIN_NAME, like 'display:page' or
 *   'pager:full', containing an array with the following keys:
 *   - title: The plugin's title.
 *   - type: The plugin type.
 *   - module: The module providing the plugin.
 *   - views: An array of enabled Views that are currently using this plugin,
 *     keyed by machine name.
 */
function views_plugin_list() {
  $plugin_data = views_fetch_plugin_data();
  $plugins = array();
  foreach (views_get_enabled_views() as $view) {
    foreach ($view->display as $display_id => $display) {
      foreach ($plugin_data as $type => $info) {
        if ($type == 'display' && isset($display->display_plugin)) {
          $name = $display->display_plugin;
        }
        elseif (isset($display->display_options["{$type}_plugin"])) {
          $name = $display->display_options["{$type}_plugin"];
        }
        elseif (isset($display->display_options[$type]['type'])) {
          $name = $display->display_options[$type]['type'];
        }
        else {
          continue;
        }

        // Key first by the plugin type, then the name.
        $key = $type . ':' . $name;
        // Add info for this plugin.
        if (!isset($plugins[$key])) {
          $plugins[$key] = array(
            'type' => $type,
            'title' => check_plain($info[$name]['title']),
            'module' => check_plain($info[$name]['module']),
            'views' => array(),
          );
        }

        // Add this view to the list for this plugin.
        $plugins[$key]['views'][$view->name] = $view->name;
      }
    }
  }
  return $plugins;
}

merlinofchaos's avatar
merlinofchaos committed
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
/**
 * A theme preprocess function to automatically allow view-based node
 * templates if called from a view.
 *
 * The 'modules/node.views.inc' file is a better place for this, but
 * we haven't got a chance to load that file before Drupal builds the
 * node portion of the theme registry.
 */
function views_preprocess_node(&$vars) {
  // The 'view' attribute of the node is added in views_preprocess_node()
  if (!empty($vars['node']->view) && !empty($vars['node']->view->name)) {
    $vars['view'] = $vars['node']->view;
    $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->name;
    if (!empty($vars['node']->view->current_display)) {
      $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->name . '__' . $vars['node']->view->current_display;

      // If a node is being rendered in a view, and the view does not have a path,
      // prevent drupal from accidentally setting the $page variable:
      if ($vars['page'] && $vars['view_mode'] == 'full' && !$vars['view']->display_handler->has_path()) {
        $vars['page'] = FALSE;
      }
    }
  }

  // Allow to alter comments and links based on the settings in the row plugin.
  if (!empty($vars['view']->style_plugin->row_plugin) && get_class($vars['view']->style_plugin->row_plugin) == 'views_plugin_row_node_view') {
    node_row_node_view_preprocess_node($vars);
  }
}

/**
 * A theme preprocess function to automatically allow view-based node
 * templates if called from a view.
 */
function views_preprocess_comment(&$vars) {
  // The 'view' attribute of the node is added in template_preprocess_views_view_row_comment()
  if (!empty($vars['node']->view) && !empty($vars['node']->view->name)) {
    $vars['view'] = &$vars['node']->view;
    $vars['theme_hook_suggestions'][] = 'comment__view__' . $vars['node']->view->name;
    if (!empty($vars['node']->view->current_display)) {
      $vars['theme_hook_suggestions'][] = 'comment__view__' . $vars['node']->view->name . '__' . $vars['node']->view->current_display;
    }
  }
}

/**
 * Implement hook_permission().
 */
function views_permission() {
  return array(
    'administer views' => array(
      'title' => t('Administer views'),
      'description' => t('Access the views administration pages.'),
    ),
    'access all views' => array(
      'title' => t('Bypass views access control'),
      'description' => t('Bypass access control when accessing views.'),
    ),
  );
}

/**
 * Implement hook_menu().
 */
function views_menu() {
446
  // Any event which causes a menu rebuild could potentially mean that the
merlinofchaos's avatar
merlinofchaos committed
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
  // Views data is updated -- module changes, profile changes, etc.
  views_invalidate_cache();
  $items = array();
  $items['views/ajax'] = array(
    'title' => 'Views',
    'page callback' => 'views_ajax',
    'theme callback' => 'ajax_base_page_theme',
    'delivery callback' => 'ajax_deliver',
    'access callback' => TRUE,
    'description' => 'Ajax callback for view loading.',
    'type' => MENU_CALLBACK,
    'file' => 'includes/ajax.inc',
  );
  // Path is not admin/structure/views due to menu complications with the wildcards from
  // the generic ajax callback.
  $items['admin/views/ajax/autocomplete/user'] = array(
    'page callback' => 'views_ajax_autocomplete_user',
    'theme callback' => 'ajax_base_page_theme',
    'access callback' => 'user_access',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
    'file' => 'includes/ajax.inc',
  );
  // Define another taxonomy autocomplete because the default one of drupal
  // does not support a vid a argument anymore
  $items['admin/views/ajax/autocomplete/taxonomy'] = array(
    'page callback' => 'views_ajax_autocomplete_taxonomy',
    'theme callback' => 'ajax_base_page_theme',
    'access callback' => 'user_access',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
    'file' => 'includes/ajax.inc',
  );
  return $items;
}

/**
 * Implement hook_menu_alter().
 */
function views_menu_alter(&$callbacks) {
  $our_paths = array();
488
  $views = views_get_applicable_views('uses_hook_menu');
merlinofchaos's avatar
merlinofchaos committed
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
  foreach ($views as $data) {
    list($view, $display_id) = $data;
    $result = $view->execute_hook_menu($display_id, $callbacks);
    if (is_array($result)) {
      // The menu system doesn't support having two otherwise
      // identical paths with different placeholders.  So we
      // want to remove the existing items from the menu whose
      // paths would conflict with ours.

      // First, we must find any existing menu items that may
      // conflict.  We use a regular expression because we don't
      // know what placeholders they might use.  Note that we
      // first construct the regex itself by replacing %views_arg
      // in the display path, then we use this constructed regex
      // (which will be something like '#^(foo/%[^/]*/bar)$#') to
      // search through the existing paths.
      $regex = '#^(' . preg_replace('#%views_arg#', '%[^/]*', implode('|', array_keys($result))) . ')$#';
      $matches = preg_grep($regex, array_keys($callbacks));

      // Remove any conflicting items that were found.
      foreach ($matches as $path) {
        // Don't remove the paths we just added!
        if (!isset($our_paths[$path])) {
          unset($callbacks[$path]);
        }
      }
      foreach ($result as $path => $item) {
        if (!isset($callbacks[$path])) {
          // Add a new item, possibly replacing (and thus effectively
          // overriding) one that we removed above.
          $callbacks[$path] = $item;
        }
        else {
          // This item already exists, so it must be one that we added.
          // We change the various callback arguments to pass an array
          // of possible display IDs instead of a single ID.
          $callbacks[$path]['page arguments'][1] = (array)$callbacks[$path]['page arguments'][1];
          $callbacks[$path]['page arguments'][1][] = $display_id;
          $callbacks[$path]['access arguments'][] = $item['access arguments'][0];
          $callbacks[$path]['load arguments'][1] = (array)$callbacks[$path]['load arguments'][1];
          $callbacks[$path]['load arguments'][1][] = $display_id;
        }
        $our_paths[$path] = TRUE;
      }
    }
  }

  // Save memory: Destroy those views.
  foreach ($views as $data) {
    list($view, $display_id) = $data;
    $view->destroy();
  }
}

/**
 * Helper function for menu loading. This will automatically be
 * called in order to 'load' a views argument; primarily it
 * will be used to perform validation.
 *
 * @param $value
 *   The actual value passed.
 * @param $name
 *   The name of the view. This needs to be specified in the 'load function'
 *   of the menu entry.
 * @param $display_id
 *   The display id that will be loaded for this menu item.
 * @param $index
 *   The menu argument index. This counts from 1.
 */
function views_arg_load($value, $name, $display_id, $index) {
  static $views = array();

  // Make sure we haven't already loaded this views argument for a similar menu
  // item elsewhere.
  $key = $name . ':' . $display_id . ':' . $value . ':' . $index;
  if (isset($views[$key])) {
    return $views[$key];
  }

  if ($view = views_get_view($name)) {
    $view->set_display($display_id);
    $view->init_handlers();

    $ids = array_keys($view->argument);

    $indexes = array();
    $path = explode('/', $view->get_path());

    foreach ($path as $id => $piece) {
      if ($piece == '%' && !empty($ids)) {
        $indexes[$id] = array_shift($ids);
      }
    }

    if (isset($indexes[$index])) {
      if (isset($view->argument[$indexes[$index]])) {
        $arg = $view->argument[$indexes[$index]]->validate_argument($value) ? $value : FALSE;
        $view->destroy();

        // Store the output in case we load this same menu item again.
        $views[$key] = $arg;
        return $arg;
      }
    }
    $view->destroy();
  }
}

/**
 * Page callback: Displays a page view, given a name and display id.
 *
 * @param $name
 *   The name of a view.
 * @param $display_id
 *   The display id of a view.
 *
 * @return
 *   Either the HTML of a fully-executed view, or MENU_NOT_FOUND.
 */
function views_page($name, $display_id) {
  $args = func_get_args();
  // Remove $name and $display_id from the arguments.
  array_shift($args);
  array_shift($args);

  // Load the view and render it.
  if ($view = views_get_view($name)) {
    return $view->execute_display($display_id, $args);
  }

  // Fallback; if we get here no view was found or handler was not valid.
  return MENU_NOT_FOUND;
}

/**
 * Implements hook_page_alter().
 */
function views_page_alter(&$page) {
  // If the main content of this page contains a view, attach its contextual
  // links to the overall page array. This allows them to be rendered directly
  // next to the page title.
  $view = views_get_page_view();
  if (!empty($view)) {
    // If a module is still putting in the display like we used to, catch that.
    if (is_subclass_of($view, 'views_plugin_display')) {
      $view = $view->view;
    }

    views_add_contextual_links($page, 'page', $view, $view->current_display);
  }
}

/**
 * Implements MODULE_preprocess_HOOK().
 */
function views_preprocess_html(&$variables) {
  // If the page contains a view as its main content, contextual links may have
  // been attached to the page as a whole; for example, by views_page_alter().
  // This allows them to be associated with the page and rendered by default
  // next to the page title (which we want). However, it also causes the
  // Contextual Links module to treat the wrapper for the entire page (i.e.,
  // the <body> tag) as the HTML element that these contextual links are
  // associated with. This we don't want; for better visual highlighting, we
  // prefer a smaller region to be chosen. The region we prefer differs from
  // theme to theme and depends on the details of the theme's markup in
  // page.tpl.php, so we can only find it using JavaScript. We therefore remove
655
  // the "contextual-region" class from the <body> tag here and add
merlinofchaos's avatar
merlinofchaos committed
656
657
  // JavaScript that will insert it back in the correct place.
  if (!empty($variables['page']['#views_contextual_links_info'])) {
658
    $key = array_search('contextual-region', $variables['attributes']['class']->value());
merlinofchaos's avatar
merlinofchaos committed
659
    if ($key !== FALSE) {
660
      unset($variables['attributes']['class'][$key]);
merlinofchaos's avatar
merlinofchaos committed
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
      // Add the JavaScript, with a group and weight such that it will run
      // before modules/contextual/contextual.js.
      drupal_add_js(drupal_get_path('module', 'views') . '/js/views-contextual.js', array('group' => JS_LIBRARY, 'weight' => -1));
    }
  }
}

/**
 * Implements hook_contextual_links_view_alter().
 */
function views_contextual_links_view_alter(&$element, $items) {
  // If we are rendering views-related contextual links attached to the overall
  // page array, add a class to the list of contextual links. This will be used
  // by the JavaScript added in views_preprocess_html().
  if (!empty($element['#element']['#views_contextual_links_info']) && !empty($element['#element']['#type']) && $element['#element']['#type'] == 'page') {
    $element['#attributes']['class'][] = 'views-contextual-links-page';
  }
}

/**
 * Implement hook_block_info().
 */
function views_block_info() {
  // Try to avoid instantiating all the views just to get the blocks info.
  views_include('cache');
  $cache = views_cache_get('views_block_items', TRUE);
  if ($cache && is_array($cache->data)) {
    return $cache->data;
  }

  $items = array();
  $views = views_get_all_views();
  foreach ($views as $view) {
    // disabled views get nothing.
    if (!empty($view->disabled)) {
      continue;
    }

    $view->init_display();
    foreach ($view->display as $display_id => $display) {

702
      if (isset($display->handler) && !empty($display->handler->definition['uses_hook_block'])) {
merlinofchaos's avatar
merlinofchaos committed
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
        $result = $display->handler->execute_hook_block_list();
        if (is_array($result)) {
          $items = array_merge($items, $result);
        }
      }

      if (isset($display->handler) && $display->handler->get_option('exposed_block')) {
        $result = $display->handler->get_special_blocks();
        if (is_array($result)) {
          $items = array_merge($items, $result);
        }
      }
    }
  }

  // block.module has a delta length limit of 32, but our deltas can
  // unfortunately be longer because view names can be 32 and display IDs
  // can also be 32. So for very long deltas, change to md5 hashes.
  $hashes = array();

  // get the keys because we're modifying the array and we don't want to
  // confuse PHP too much.
  $keys = array_keys($items);
  foreach ($keys as $delta) {
    if (strlen($delta) >= 32) {
      $hash = md5($delta);
      $hashes[$hash] = $delta;
      $items[$hash] = $items[$delta];
      unset($items[$delta]);
    }
  }

  // Only save hashes if they have changed.
  $old_hashes = variable_get('views_block_hashes', array());
  if ($hashes != $old_hashes) {
    variable_set('views_block_hashes', $hashes);
  }
  // Save memory: Destroy those views.
  foreach ($views as $view) {
    $view->destroy();
  }

  views_cache_set('views_block_items', $items, TRUE);

  return $items;
}

/**
 * Implement hook_block_view().
 */
function views_block_view($delta) {
  $start = microtime(TRUE);
  // if this is 32, this should be an md5 hash.
  if (strlen($delta) == 32) {
    $hashes = variable_get('views_block_hashes', array());
    if (!empty($hashes[$delta])) {
      $delta = $hashes[$delta];
    }
  }

  // This indicates it's a special one.
  if (substr($delta, 0, 1) == '-') {
    list($nothing, $type, $name, $display_id) = explode('-', $delta);
    // Put the - back on.
    $type = '-' . $type;
    if ($view = views_get_view($name)) {
      if ($view->access($display_id)) {
        $view->set_display($display_id);
        if (isset($view->display_handler)) {
          $output = $view->display_handler->view_special_blocks($type);
          // Before returning the block output, convert it to a renderable
          // array with contextual links.
          views_add_block_contextual_links($output, $view, $display_id, 'special_block_' . $type);
          $view->destroy();
          return $output;
        }
      }
      $view->destroy();
    }
  }

  // If the delta doesn't contain valid data return nothing.
  $explode = explode('-', $delta);
  if (count($explode) != 2) {
    return;
  }
  list($name, $display_id) = $explode;
  // Load the view
  if ($view = views_get_view($name)) {
    if ($view->access($display_id)) {
      $output = $view->execute_display($display_id);
      // Before returning the block output, convert it to a renderable array
      // with contextual links.
      views_add_block_contextual_links($output, $view, $display_id);
      $view->destroy();
      return $output;
    }
    $view->destroy();
  }
}

/**
 * Converts Views block content to a renderable array with contextual links.
 *
 * @param $block
 *   An array representing the block, with the same structure as the return
 *   value of hook_block_view(). This will be modified so as to force
 *   $block['content'] to be a renderable array, containing the optional
 *   '#contextual_links' property (if there are any contextual links associated
 *   with the block).
 * @param $view
 *   The view that was used to generate the block content.
 * @param $display_id
 *   The ID of the display within the view that was used to generate the block
 *   content.
 * @param $block_type
 *   The type of the block. If it's block it's a regular views display,
 *   but 'special_block_-exp' exist as well.
 */
function views_add_block_contextual_links(&$block, $view, $display_id, $block_type = 'block') {
  // Do not add contextual links to an empty block.
  if (!empty($block['content'])) {
    // Contextual links only work on blocks whose content is a renderable
    // array, so if the block contains a string of already-rendered markup,
    // convert it to an array.
    if (is_string($block['content'])) {
      $block['content'] = array('#markup' => $block['content']);
    }
    // Add the contextual links.
    views_add_contextual_links($block['content'], $block_type, $view, $display_id);
  }
}

/**
 * Adds contextual links associated with a view display to a renderable array.
 *
 * This function should be called when a view is being rendered in a particular
 * location and you want to attach the appropriate contextual links (e.g.,
 * links for editing the view) to it.
 *
 * The function operates by checking the view's display plugin to see if it has
 * defined any contextual links that are intended to be displayed in the
 * requested location; if so, it attaches them. The contextual links intended
 * for a particular location are defined by the 'contextual links' and
847
 * 'contextual_links_locations' properties in hook_views_plugins() and
merlinofchaos's avatar
merlinofchaos committed
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
 * hook_views_plugins_alter(); as a result, these hook implementations have
 * full control over where and how contextual links are rendered for each
 * display.
 *
 * In addition to attaching the contextual links to the passed-in array (via
 * the standard #contextual_links property), this function also attaches
 * additional information via the #views_contextual_links_info property. This
 * stores an array whose keys are the names of each module that provided
 * views-related contextual links (same as the keys of the #contextual_links
 * array itself) and whose values are themselves arrays whose keys ('location',
 * 'view_name', and 'view_display_id') store the location, name of the view,
 * and display ID that were passed in to this function. This allows you to
 * access information about the contextual links and how they were generated in
 * a variety of contexts where you might be manipulating the renderable array
 * later on (for example, alter hooks which run later during the same page
 * request).
 *
 * @param $render_element
 *   The renderable array to which contextual links will be added. This array
 *   should be suitable for passing in to drupal_render() and will normally
 *   contain a representation of the view display whose contextual links are
 *   being requested.
 * @param $location
 *   The location in which the calling function intends to render the view and
 *   its contextual links. The core system supports three options for this
 *   parameter:
 *   - 'block': Used when rendering a block which contains a view. This
 *     retrieves any contextual links intended to be attached to the block
 *     itself.
 *   - 'page': Used when rendering the main content of a page which contains a
 *     view. This retrieves any contextual links intended to be attached to the
 *     page itself (for example, links which are displayed directly next to the
 *     page title).
 *   - 'view': Used when rendering the view itself, in any context. This
 *     retrieves any contextual links intended to be attached directly to the
 *     view.
 *   If you are rendering a view and its contextual links in another location,
 *   you can pass in a different value for this parameter. However, you will
 *   also need to use hook_views_plugins() or hook_views_plugins_alter() to
887
 *   declare, via the 'contextual_links_locations' array key, which view
merlinofchaos's avatar
merlinofchaos committed
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
 *   displays support having their contextual links rendered in the location
 *   you have defined.
 * @param $view
 *   The view whose contextual links will be added.
 * @param $display_id
 *   The ID of the display within $view whose contextual links will be added.
 *
 * @see hook_views_plugins()
 * @see views_block_view()
 * @see views_page_alter()
 * @see template_preprocess_views_view()
 */
function views_add_contextual_links(&$render_element, $location, $view, $display_id) {
  // Do not do anything if the view is configured to hide its administrative
  // links.
  if (empty($view->hide_admin_links)) {
    // Also do not do anything if the display plugin has not defined any
    // contextual links that are intended to be displayed in the requested
    // location.
    $plugin = views_fetch_plugin_data('display', $view->display[$display_id]->display_plugin);
908
    // If contextual_links_locations are not set, provide a sane default. (To
merlinofchaos's avatar
merlinofchaos committed
909
    // avoid displaying any contextual links at all, a display plugin can still
910
    // set 'contextual_links_locations' to, e.g., {""}.)
911
912
913

    if (!isset($plugin['contextual_links_locations'])) {
      $plugin['contextual_links_locations'] = array('view');
914
    }
915
    elseif ($plugin['contextual_links_locations'] = array() || $plugin['contextual_links_locations'] == array('')) {
916
917
      $plugin['contextual_links_locations'] = array();
    }
918
919
920
921
    else {
      $plugin += array('contextual_links_locations' => array('view'));
    }

merlinofchaos's avatar
merlinofchaos committed
922
    // On exposed_forms blocks contextual links should always be visible.
923
924
925
    $plugin['contextual_links_locations'][] = 'special_block_-exp';
    $has_links = !empty($plugin['contextual links']) && !empty($plugin['contextual_links_locations']);
    if ($has_links && in_array($location, $plugin['contextual_links_locations'])) {
merlinofchaos's avatar
merlinofchaos committed
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
      foreach ($plugin['contextual links'] as $module => $link) {
        $args = array();
        $valid = TRUE;
        if (!empty($link['argument properties'])) {
          foreach ($link['argument properties'] as $property) {
            // If the plugin is trying to create an invalid contextual link
            // (for example, "path/to/{$view->property}", where $view->property
            // does not exist), we cannot construct the link, so we skip it.
            if (!property_exists($view, $property)) {
              $valid = FALSE;
              break;
            }
            else {
              $args[] = $view->{$property};
            }
          }
        }
        // If the link was valid, attach information about it to the renderable
        // array.
        if ($valid) {
          $render_element['#contextual_links'][$module] = array($link['parent path'], $args);
          $render_element['#views_contextual_links_info'][$module] = array(
            'location' => $location,
            'view' => $view,
            'view_name' => $view->name,
            'view_display_id' => $display_id,
          );
        }
      }
    }
  }
}

/**
 * Returns an array of language names.
 *
 * This is a one to one copy of locale_language_list because we can't rely on enabled locale module.
 *
 * @param $field
 *   'name' => names in current language, localized
 *   'native' => native names
 * @param $all
 *   Boolean to return all languages or only enabled ones
 *
 * @see locale_language_list()
971
 * @todo Figure out whether we need this with language module.
merlinofchaos's avatar
merlinofchaos committed
972
973
974
975
976
977
 */
function views_language_list($field = 'name', $all = FALSE) {
  if ($all) {
    $languages = language_list();
  }
  else {
978
    $languages = language_list();
merlinofchaos's avatar
merlinofchaos committed
979
980
981
  }
  $list = array();
  foreach ($languages as $language) {
982
    $list[$language->langcode] = ($field == 'name') ? t($language->name) : $language->$field;
merlinofchaos's avatar
merlinofchaos committed
983
984
985
986
987
  }
  return $list;
}

/**
988
 * Implements hook_cache_flush().
merlinofchaos's avatar
merlinofchaos committed
989
 */
990
function views_cache_flush() {
merlinofchaos's avatar
merlinofchaos committed
991
992
993
994
995
996
997
  return array('cache_views', 'cache_views_data');
}

/**
 * Implements hook_field_create_instance.
 */
function views_field_create_instance($instance) {
998
999
  cache('cache_views')->flush();
  cache('cache_views_data')->flush();
merlinofchaos's avatar
merlinofchaos committed
1000
1001
1002
1003
1004
1005
}

/**
 * Implements hook_field_update_instance.
 */
function views_field_update_instance($instance, $prior_instance) {
1006
1007
  cache('cache_views')->flush();
  cache('cache_views_data')->flush();
merlinofchaos's avatar
merlinofchaos committed
1008
1009
1010
1011
1012
1013
}

/**
 * Implements hook_field_delete_instance.
 */
function views_field_delete_instance($instance) {
1014
1015
  cache('cache_views')->flush();
  cache('cache_views_data')->flush();
merlinofchaos's avatar
merlinofchaos committed
1016
1017
1018
1019
1020
1021
}

/**
 * Invalidate the views cache, forcing a rebuild on the next grab of table data.
 */
function views_invalidate_cache() {
1022
  // Clear the views cache.
1023
  cache('cache_views')->flush();
1024
1025
1026
1027
1028
1029
1030
1031
1032

  // Clear the page and block cache.
  cache_invalidate(array('content' => TRUE));

  // Set the menu as needed to be rebuilt.
  variable_set('menu_rebuild_needed', TRUE);

  // Allow modules to respond to the Views cache being cleared.
  module_invoke_all('views_invalidate_cache');
merlinofchaos's avatar
merlinofchaos committed
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
}

/**
 * Access callback to determine if the user can import Views.
 *
 * View imports require an additional access check because they are PHP
 * code and PHP is more locked down than administer views.
 */
function views_import_access() {
  return user_access('administer views') && user_access('use PHP for settings');
}

/**
 * Determine if the logged in user has access to a view.
 *
 * This function should only be called from a menu hook or some other
 * embedded source. Each argument is the result of a call to
 * views_plugin_access::get_access_callback() which is then used
 * to determine if that display is accessible. If *any* argument
 * is accessible, then the view is accessible.
 */
function views_access() {
  $args = func_get_args();
  foreach ($args as $arg) {
    if ($arg === TRUE) {
      return TRUE;
    }

    if (!is_array($arg)) {
      continue;
    }

    list($callback, $arguments) = $arg;
    $arguments = $arguments ? $arguments : array();
    // Bring dynamic arguments to the access callback.
    foreach ($arguments as $key => $value) {
      if (is_int($value) && isset($args[$value])) {
        $arguments[$key] = $args[$value];
      }
    }
    if (function_exists($callback) && call_user_func_array($callback, $arguments)) {
      return TRUE;
    }
  }

  return FALSE;
}

/**
 * Access callback for the views_plugin_access_perm access plugin.
 *
 * Determine if the specified user has access to a view on the basis of
 * permissions. If the $account argument is omitted, the current user
 * is used.
 */
function views_check_perm($perm, $account = NULL) {
  return user_access($perm, $account) || user_access('access all views', $account);
}

/**
 * Access callback for the views_plugin_access_role access plugin.

 * Determine if the specified user has access to a view on the basis of any of
 * the requested roles. If the $account argument is omitted, the current user
 * is used.
 */
function views_check_roles($rids, $account = NULL) {
  global $user;
  $account = isset($account) ? $account : $user;
  $roles = array_keys($account->roles);
  $roles[] = $account->uid ? DRUPAL_AUTHENTICATED_RID : DRUPAL_ANONYMOUS_RID;
  return user_access('access all views', $account) || array_intersect(array_filter($rids), $roles);
}
// ------------------------------------------------------------------
// Functions to help identify views that are running or ran

/**
 * Set the current 'page view' that is being displayed so that it is easy
 * for other modules or the theme to identify.
 */
function &views_set_page_view($view = NULL) {
  static $cache = NULL;
  if (isset($view)) {
    $cache = $view;
  }

  return $cache;
}

/**
 * Find out what, if any, page view is currently in use. Please note that
 * this returns a reference, so be careful! You can unintentionally modify the
 * $view object.
 *
1127
 * @return Drupal\views\View
merlinofchaos's avatar
merlinofchaos committed
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
 *   A fully formed, empty $view object.
 */
function &views_get_page_view() {
  return views_set_page_view();
}

/**
 * Set the current 'current view' that is being built/rendered so that it is
 * easy for other modules or items in drupal_eval to identify
 *
1138
 * @return Drupal\views\View
merlinofchaos's avatar
merlinofchaos committed
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
 */
function &views_set_current_view($view = NULL) {
  static $cache = NULL;
  if (isset($view)) {
    $cache = $view;
  }

  return $cache;
}

/**
 * Find out what, if any, current view is currently in use. Please note that
 * this returns a reference, so be careful! You can unintentionally modify the
 * $view object.
 *
1154
 * @return Drupal\views\View
merlinofchaos's avatar
merlinofchaos committed
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
 */
function &views_get_current_view() {
  return views_set_current_view();
}

// ------------------------------------------------------------------
// Include file helpers

/**
 * Include views .inc files as necessary.
 */
function views_include($file) {
1167
  module_load_include('inc', 'views', 'includes/' . $file);
merlinofchaos's avatar
merlinofchaos committed
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
}

/**
 * Load views files on behalf of modules.
 */
function views_module_include($api, $reset = FALSE) {
  if ($reset) {
    $cache = &drupal_static('ctools_plugin_api_info');
    if (isset($cache['views']['views'])) {
      unset($cache['views']['views']);
    }
  }
1180
1181

  // @todo replace with http://drupal.org/node/1741154.
merlinofchaos's avatar
merlinofchaos committed
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
  ctools_include('plugins');
  return ctools_plugin_api_include('views', $api, views_api_minimum_version(), views_api_version());
}

/**
 * Get a list of modules that support the current views API.
 */
function views_get_module_apis($api = 'views', $reset = FALSE) {
  if ($reset) {
    $cache = &drupal_static('ctools_plugin_api_info');
    if (isset($cache['views']['views'])) {
      unset($cache['views']['views']);
    }
  }
1196
1197

  // @todo replace with http://drupal.org/node/1741154.
merlinofchaos's avatar
merlinofchaos committed
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
  ctools_include('plugins');
  return ctools_plugin_api_info('views', $api, views_api_minimum_version(), views_api_version());
}

/**
 * Include views .css files.
 */
function views_add_css($file) {
  // We set preprocess to FALSE because we are adding the files conditionally,
  // and we don't want to generate duplicate cache files.
  // TODO: at some point investigate adding some files unconditionally and
  // allowing preprocess.
  drupal_add_css(drupal_get_path('module', 'views') . "/css/$file.css", array('preprocess' => FALSE));
}

/**
 * Include views .js files.
 */
function views_add_js($file) {
  // If javascript has been disabled by the user, never add js files.
1218
  if (config('views.settings')->get('no_javascript')) {
merlinofchaos's avatar
merlinofchaos committed
1219
1220
    return;
  }
1221
  $path = drupal_get_path('module', 'views');
merlinofchaos's avatar
merlinofchaos committed
1222
1223
  static $base = TRUE, $ajax = TRUE;
  if ($base) {
1224
    drupal_add_js($path . "/js/base.js");
merlinofchaos's avatar
merlinofchaos committed
1225
1226
1227
1228
1229
1230
1231
    $base = FALSE;
  }
  if ($ajax && in_array($file, array('ajax', 'ajax_view'))) {
    drupal_add_library('system', 'drupal.ajax');
    drupal_add_library('system', 'jquery.form');
    $ajax = FALSE;
  }
1232
  drupal_add_js($path . "/js/$file.js");
merlinofchaos's avatar
merlinofchaos committed
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
}

/**
 * Load views files on behalf of modules.
 */
function views_include_handlers($reset = FALSE) {
  static $finished = FALSE;
  // Ensure this only gets run once.
  if ($finished && !$reset) {
    return;
  }

  views_include('handlers');
  views_include('cache');
  views_module_include('views', $reset);
  $finished = TRUE;
}

// -----------------------------------------------------------------------
// Views handler functions

/**
 * Fetch a handler from the data cache.
 *
 * @param $table
 *   The name of the table this handler is from.
 * @param $field
 *   The name of the field this handler is from.
 * @param $key
 *   The type of handler. i.e, sort, field, argument, filter, relationship
 * @param $override
 *   Override the actual handler object with this class. Used for
 *   aggregation when the handler is redirected to the aggregation
 *   handler.
 *
 * @return views_handler
 *   An instance of a handler object. May be views_handler_broken.
 */
1271
function views_get_handler($table, $field, $key, $override = NULL) {
merlinofchaos's avatar
merlinofchaos committed
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
  static $recursion_protection = array();

  $data = views_fetch_data($table, FALSE);
  $handler = NULL;
  views_include('handlers');

  // Support old views_data entries conversion.

  // Support conversion on table level.
  if (isset($data['moved to'])) {
    $moved = array($data['moved to'], $field);
  }
  // Support conversion on datafield level.
  if (isset($data[$field]['moved to'])) {
    $moved = $data[$field]['moved to'];
  }
  // Support conversion on handler level.
  if (isset($data[$field][$key]['moved to'])) {
    $moved = $data[$field][$key]['moved to'];
  }

  if (isset($data[$field][$key]) || !empty($moved)) {
    if (!empty($moved)) {
      list($moved_table, $moved_field) = $moved;
      if (!empty($recursion_protection[$moved_table][$moved_field])) {
        // recursion detected!
        return NULL;
      }

      $recursion_protection[$moved_table][$moved_field] = TRUE;
1302
      $handler = views_get_handler($moved_table, $moved_field, $key, $override);
merlinofchaos's avatar
merlinofchaos committed
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
      $recursion_protection = array();
      if ($handler) {
        // store these values so we know what we were originally called.
        $handler->original_table = $table;
        $handler->original_field = $field;
        if (empty($handler->actual_table)) {
          $handler->actual_table = $moved_table;
          $handler->actual_field = $moved_field;
        }
      }
      return $handler;
    }

dawehner's avatar
dawehner committed
1316
    // @fixme: temporary.
aspilicious's avatar
aspilicious committed
1317
1318
1319
    // Set up a default handler, if both handler and id is not specified.
    if (empty($data[$field][$key]['handler']) && empty($data[$field][$key]['id'])) {
      $data[$field][$key]['id'] = 'standard';
merlinofchaos's avatar
merlinofchaos committed
1320
1321
    }

1322
1323
1324
1325
    if ($override) {
      $data[$field][$key]['override handler'] = $override;
    }

merlinofchaos's avatar
merlinofchaos committed
1326
1327
1328
1329
1330
1331
1332
1333
    $handler = _views_prepare_handler($data[$field][$key], $data, $field, $key);
  }

  if ($handler) {
    return $handler;
  }

  // DEBUG -- identify missing handlers
1334
  debug(t("Missing handler: @table @field @key", array('@table' => $table, '@field' => $field, '@key' => $key)));
merlinofchaos's avatar
merlinofchaos committed
1335
1336
  $broken = array(
    'title' => t('Broken handler @table.@field', array('@table' => $table, '@field' => $field)),
aspilicious's avatar
aspilicious committed
1337
    'id' => 'broken',
merlinofchaos's avatar
merlinofchaos committed
1338
1339
1340
    'table' => $table,
    'field' => $field,
  );
1341
  return _views_create_handler($key, $broken);
merlinofchaos's avatar
merlinofchaos committed
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
}

/**
 * Fetch Views' data from the cache
 */
function views_fetch_data($table = NULL, $move = TRUE, $reset = FALSE) {
  views_include('cache');
  return _views_fetch_data($table, $move, $reset);
}

// -----------------------------------------------------------------------
// Views plugin functions

/**
 * Fetch the plugin data from cache.
 */
aspilicious's avatar
aspilicious committed
1358
function views_fetch_plugin_data($type = NULL, $id = NULL, $reset = FALSE) {
merlinofchaos's avatar
merlinofchaos committed
1359
  views_include('cache');
aspilicious's avatar
aspilicious committed
1360
  return _views_fetch_plugin_data($type, $id, $reset);
merlinofchaos's avatar
merlinofchaos committed
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
}

/**
 * Fetch a list of all base tables available
 *
 * @param $type
 *   Either 'display', 'style' or 'row'
 * @param $key
 *   For style plugins, this is an optional type to restrict to. May be 'normal',
 *   'summary', 'feed' or others based on the neds of the display.
 * @param $base
 *   An array of possible base tables.
 *
 * @return
 *   A keyed array of in the form of 'base_table' => 'Description'.
 */
function views_fetch_plugin_names($type, $key = NULL, $base = array()) {
1378
  $manager = new ViewsPluginManager($type);
1379
1380
  $definitions = $manager->getDefinitions();
  $plugins = array();
merlinofchaos's avatar
merlinofchaos committed
1381

aspilicious's avatar
aspilicious committed
1382
  foreach ($definitions as $id => $plugin) {
1383
1384
1385
1386
    // Skip plugins that don't conform to our key.
    if ($key && (empty($plugin['type']) || $plugin['type'] != $key)) {
      continue;
    }
1387
1388
1389
1390
1391
    // @todo While Views is providing on behalf of core modules, check to see
    //   if they are enabled or not.
    if (isset($plugin['module']) && !module_exists($plugin['module'])) {
      continue;
    }
1392

1393
    if (empty($plugin['no_ui']) && (empty($base) || empty($plugin['base']) || array_intersect($base, $plugin['base']))) {
aspilicious's avatar
aspilicious committed
1394
      $plugins[$id] = $plugin['title'];
merlinofchaos's avatar
merlinofchaos committed
1395
1396
1397
    }
  }

1398
1399
1400
  if (!empty($plugins)) {
    asort($plugins);
    return $plugins;
merlinofchaos's avatar
merlinofchaos committed
1401
  }
1402

merlinofchaos's avatar
merlinofchaos committed
1403
1404
1405
1406
1407
1408
1409
  // fall-through
  return array();
}

/**
 * Get a handler for a plugin
 *
1410
1411
 * @param string $type
 *   The plugin type like access or display.
aspilicious's avatar
aspilicious committed
1412
 * @param string $id
1413
1414
 *   The name of the plugin like standard.
 *
merlinofchaos's avatar
merlinofchaos committed
1415
1416
1417
1418
 * @return views_plugin
 *
 * The created plugin object.
 */
aspilicious's avatar
aspilicious committed
1419
function views_get_plugin($type, $id, $reset = FALSE) {
merlinofchaos's avatar
merlinofchaos committed
1420
  views_include('handlers');
dawehner's avatar
dawehner committed
1421

1422
  $manager = new ViewsPluginManager($type);
aspilicious's avatar
aspilicious committed
1423
  $definition = $manager->getDefinition($id);
merlinofchaos's avatar
merlinofchaos committed
1424
  if (!empty($definition)) {
1425
    return _views_create_plugin($type, $definition);
merlinofchaos's avatar
merlinofchaos committed
1426
1427
1428
  }
}

1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
/**
 * Get a join plugin instance.
 *
 * @param string $plugin_id
 *   The name of the join for example standard.
 *
 * @return Drupal\views\Plugin\views\join\JoinPluginBase
 */
function views_get_join($plugin_id = 'standard') {
  $manager = new ViewsPluginManager('join');
  return $manager->createInstance($plugin_id);
}

merlinofchaos's avatar
merlinofchaos committed
1442
1443
1444
1445
1446
1447
/**
 * Load the current enabled localization plugin.
 *
 * @return The name of the localization plugin.
 */
function views_get_localization_plugin() {
1448
  $plugin = config('views.settings')->get('localization_plugin');
merlinofchaos's avatar
merlinofchaos committed
1449
1450
1451
  // Provide sane default values for the localization plugin.
  if (empty($plugin)) {
    if (module_exists('locale')) {
aspilicious's avatar
aspilicious committed
1452
      $plugin = 'core';
merlinofchaos's avatar
merlinofchaos committed
1453
1454
    }
    else {
aspilicious's avatar
aspilicious committed
1455
      $plugin = 'none';
merlinofchaos's avatar
merlinofchaos committed
1456
1457
1458
1459
1460
1461
    }
  }

  return $plugin;
}

1462
1463
1464
1465
/**
 * Get enabled display extenders.
 */
function views_get_enabled_display_extenders() {
1466
  $enabled = array_filter((array) config('views.settings')->get('display_extenders'));
1467
1468
1469
1470
1471
1472
1473
1474
1475
  $options = views_fetch_plugin_names('display_extender');
  foreach ($options as $name => $plugin) {
    $enabled[$name] = $name;
  }

  return array_filter($enabled);
}


merlinofchaos's avatar
merlinofchaos committed
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
// -----------------------------------------------------------------------
// Views database functions

/**
 * Get all view templates.
 *
 * Templates are special in-code views that are never active, but exist only
 * to be cloned into real views as though they were templates.
 */
function views_get_all_templates() {
  $templates = array();
  $modules = views_module_include('views_template');

  foreach ($modules as $module => $info) {
    $function = $module . '_views_templates';
    if (function_exists($function)) {
      $new = $function();
      if ($new && is_array($new)) {
        $templates = array_merge($new, $templates);
      }
    }
  }

  return $templates;
}

/**
 * Create an empty view to work with.
 *
1505
 * @return Drupal\views\View
merlinofchaos's avatar
merlinofchaos committed
1506
1507
1508
1509
 *   A fully formed, empty $view object. This object must be populated before
 *   it can be successfully saved.
 */
function views_new_view() {
1510
  $view = new View();
merlinofchaos's avatar
merlinofchaos committed
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
  $view->vid = 'new';
  $view->add_display('default');

  return $view;
}

/**
 * Return a list of all views and display IDs that have a particular
 * setting in their display's plugin settings.
 *
 * @return
 * @code
 * array(
 *   array($view, $display_id),
 *   array($view, $display_id),
 * );
 * @endcode
 */
function views_get_applicable_views($type) {
  // @todo: Use a smarter flagging system so that we don't have to
  // load every view for this.
  $result = array();
  $views = views_get_all_views();

  foreach ($views as $view) {
    // Skip disabled views.
    if (!empty($view->disabled)) {
      continue;
    }

    if (empty($view->display)) {
      // Skip this view as it is broken.
      continue;
    }

    // Loop on array keys because something seems to muck with $view->display
    // a bit in PHP4.
    foreach (array_keys($view->display) as $id) {
      $plugin = views_fetch_plugin_data('display', $view->display[$id]->display_plugin);
      if (!empty($plugin[$type])) {
1551
        // This view uses_hook_menu. Clone it so that different handlers
merlinofchaos's avatar
merlinofchaos committed
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
        // don't trip over each other, and add it to the list.
        $v = $view->clone_view();
        if ($v->set_display($id) && $v->display_handler->get_option('enabled')) {
          $result[] = array($v, $id);
        }
        // In PHP 4.4.7 and presumably earlier, if we do not unset $v
        // here, we will find that it actually overwrites references
        // possibly due to shallow copying issues.
        unset($v);
      }
    }
  }
  return $result;
}

/**
 * Return an array of all views as fully loaded $view objects.
 *
 * @param $reset
 *   If TRUE, reset the static cache forcing views to be reloaded.
 */
function views_get_all_views($reset = FALSE) {
1574
  // @todo replace with http://drupal.org/node/1741154.
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
  $controller = entity_get_controller('view');
  return $controller->load();
}

/**
 * Loads a view with the storage controller.
 *
 * @param string $id
 *   The view name to load.
 *
 * @return Drupal\views\View
 *   The view which is loaded.
 */
function views_storage_load($id) {
  $controller = entity_get_controller('view');
  $result = $controller->load(array($id));
  return reset($result);
}

function views_storage_save(View $view) {
  $controller = entity_get_controller('view');
  return $controller->save($view);
merlinofchaos's avatar
merlinofchaos committed
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
}

/**
 * Returns an array of all enabled views, as fully loaded $view objects.
 */
function views_get_enabled_views() {
  $views = views_get_all_views();
  return array_filter($views, 'views_view_is_enabled');
}

/**
 * Returns an array of all disabled views, as fully loaded $view objects.
 */
function views_get_disabled_views() {
  $views = views_get_all_views();
  return array_filter($views, 'views_view_is_disabled');
}

/**
 * Return an array of view as options array, that can be used by select,
 * checkboxes and radios as #options.
 *
 * @param bool $views_only
 *  If TRUE, only return views, not displays.
 * @param string $filter
 *  Filters the views on status. Can either be 'all' (default), 'enabled' or
 *  'disabled'
 * @param  mixed $exclude_view
 *  view or current display to exclude
 *  either a
 *  - views object (containing $exclude_view->name and $exclude_view->current_display)
 *  - views name as string:  e.g. my_view
 *  - views name and display id (separated by ':'): e.g. my_view:default
 * @param bool $optgroup
 *  If TRUE, returns an array with optgroups for each view (will be ignored for
 *  $views_only = TRUE). Can be used by select
1633
1634
 * @param bool $sort
 *  If TRUE, the list of views is sorted ascending.
merlinofchaos's avatar
merlinofchaos committed
1635
1636
1637
1638
1639
 *
 * @return array
 *  an associative array for use in select.
 *  - key: view name and display id separated by ':', or the view name only
 */
1640
function views_get_views_as_options($views_only = FALSE, $filter = 'all', $exclude_view = NULL, $optgroup = FALSE, $sort = FALSE) {
merlinofchaos's avatar
merlinofchaos committed
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686

  // Filter the big views array.
  switch ($filter) {
    case 'all':
    case 'disabled':
    case 'enabled':
      $func = "views_get_{$filter}_views";
      $views = $func();
      break;
    default:
      return array();
  }

  // Prepare exclude view strings for comparison.
  if (empty($exclude_view)) {
    $exclude_view_name = '';
    $exclude_view_display = '';
  }
  elseif (is_object($exclude_view)) {
    $exclude_view_name = $exclude_view->name;
    $exclude_view_display = $exclude_view->current_display;
  }
  else {
    list($exclude_view_name, $exclude_view_display) = explode(':', $exclude_view);
  }

  $options = array();
  foreach ($views as $view) {
    // Return only views.
    if ($views_only && $view->name != $exclude_view_name) {
      $options[$view->name] = $view->get_human_name();
    }
    // Return views with display ids.
    else {
      foreach ($view->display as $display_id => $display) {
        if (!($view->name == $exclude_view_name && $display_id == $exclude_view_display)) {
          if ($optgroup) {
            $options[$view->name][$view->name . ':' . $display->id] = t('@view : @display', array('@view' => $view->name, '@display' => $display->id));
          }
          else {
            $options[$view->name . ':' . $display->id] = t('View: @view - Display: @display', array('@view' => $view->name, '@display' => $display->id));
          }
        }
      }
    }
  }
1687
1688
1689
  if ($sort) {
    ksort($options);
  }
merlinofchaos's avatar
merlinofchaos committed
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
  return $options;
}

/**
 * Returns TRUE if a view is enabled, FALSE otherwise.
 */
function views_view_is_enabled($view) {
  return empty($view->disabled);
}

/**
 * Returns TRUE if a view is disabled, FALSE otherwise.
 */
function views_view_is_disabled($view) {
  return !empty($view->disabled);
}

/**
 * Get a view from the database or from default views.
 *
 * This function is just a static wrapper around views::load(). This function
 * isn't called 'views_load()' primarily because it might get a view
 * from the default views which aren't technically loaded from the database.
 *
 * @param $name
 *   The name of the view.
 * @param $reset
 *   If TRUE, reset this entry in the load cache.
1718
 * @return Drupal\views\View
merlinofchaos's avatar
merlinofchaos committed
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
 *   A reference to the $view object. Use $reset if you're sure you want
 *   a fresh one.
 */
function views_get_view($name, $reset = FALSE) {
  if ($reset) {
    $cache = &drupal_static('ctools_export_load_object');
    if (isset($cache['views_view'][$name])) {
      unset($cache['views_view'][$name]);
    }
  }

1730
  // @todo replace with http://drupal.org/node/1741154.
merlinofchaos's avatar
merlinofchaos committed
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
  ctools_include('export');
  $view = ctools_export_crud_load('views_view', $name);
  if ($view) {
    $view->update();
    return $view->clone_view();
  }
}

/**
 * Find the real location of a table.
 *
 * If a table has moved, find the new name of the table so that we can
 * change its name directly in options where necessary.
 */
function views_move_table($table) {
  $data = views_fetch_data($table, FALSE);
  if (isset($data['moved to'])) {
    $table = $data['moved to'];
  }

  return $table;
}

/**
 * Export callback to load the view subrecords, which are the displays.
 */
function views_load_display_records(&$views) {
  // Get vids from the views.
  $names = array();
  foreach ($views as $view) {
    if (empty($view->display)) {
      $names[$view->vid] = $view->name;
    }
  }

  if (empty($names)) {
    return;
  }

1770
1771
1772
1773
  foreach (View::db_objects() as $key => $object) {
    $table_name = "views_" . $key;
    $object_name = 'Drupal\views\Views' . $object;
    $result = db_query("SELECT * FROM {{$table_name}} WHERE vid IN (:vids) ORDER BY vid, position",
merlinofchaos's avatar
merlinofchaos committed
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
      array(':vids' => array_keys($names)));

    foreach ($result as $data) {
      $object = new $object_name(FALSE);
      $object->load_row($data);

      // Because it can get complicated with this much indirection,
      // make a shortcut reference.
      $location = &$views[$names[$object->vid]]->$key;

      // If we have a basic id field, load the item onto the view based on
      // this ID, otherwise push it on.
      if (!empty($object->id)) {
        $location[$object->id] = $object;
      }
      else {
        $location[] = $object;
      }
    }
  }
}

/**
 * Export CRUD callback to save a view.
 */
function views_save_view(&$view) {
  return $view->save();
}

/**
 * Export CRUD callback to delete a view.
 */
function views_delete_view(&$view) {
  return $view->delete(TRUE);
}

/**
 * Export CRUD callback to export a view.
 */
function views_export_view(&$view, $indent = '') {
  return $view->export($indent);
}

1817
1818
1819
1820
1821
1822
1823
1824
/**
 * Export callback to change view status.
 */
function views_export_status($view, $status) {
  ctools_export_set_object_status($view, $status);
  views_invalidate_cache();
}

merlinofchaos's avatar
merlinofchaos committed
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
// ------------------------------------------------------------------
// Views form (View with form elements)

/**
 * Returns TRUE if the passed-in view contains handlers with views form
 * implementations, FALSE otherwise.
 */
function views_view_has_form_elements($view) {
  foreach ($view->field as $field) {
    if (property_exists($field, 'views_form_callback') || method_exists($field, 'views_form')) {
      return TRUE;
    }
  }
  $area_handlers = array_merge(array_values($view->header), array_values($view->footer));
  $empty = empty($view->result);
  foreach ($area_handlers as $area) {
    if (method_exists($area, 'views_form') && !$area->views_form_empty($empty)) {
      return TRUE;
    }
  }
  return FALSE;
}

/**
 * This is the entry function. Just gets the form for the current step.
 * The form is always assumed to be multistep, even if it has only one
 * step (the default 'views_form_views_form' step). That way it is actually
 * possible for modules to have a multistep form if they need to.
 */
function views_form($form, &$form_state, $view, $output) {
  $form_state['step'] = isset($form_state['step']) ? $form_state['step'] : 'views_form_views_form';
  // Cache the built form to prevent it from being rebuilt prior to validation
  // and submission, which could lead to data being processed incorrectly,
  // because the views rows (and thus, the form elements as well) have changed
  // in the meantime.
  $form_state['cache'] = TRUE;

  $form = array();
1863
  $query = drupal_get_query_parameters();
merlinofchaos's avatar
merlinofchaos committed
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
  $form['#action'] = url($view->get_url(), array('query' => $query));
  // Tell the preprocessor whether it should hide the header, footer, pager...
  $form['show_view_elements'] = array(
    '#type' => 'value',
    '#value' => ($form_state['step'] == 'views_form_views_form') ? TRUE : FALSE,
  );

  $form = $form_state['step']($form, $form_state, $view, $output);
  return $form;
}

/**
 * Callback for the main step of a Views form.
 * Invoked by views_form().
 */
function views_form_views_form($form, &$form_state, $view, $output) {
  $form['#prefix'] = '<div class="views-form">';
  $form['#suffix'] = '</div>';
  $form['#theme'] = 'views_form_views_form';
  $form['#validate'][] = 'views_form_views_form_validate';
  $form['#submit'][] = 'views_form_views_form_submit';

  // Add the output markup to the form array so that it's included when the form
  // array is passed to the theme function.
  $form['output'] = array(
    '#type' => 'markup',
    '#markup' => $output,
    // This way any additional form elements will go before the view
    // (below the exposed widgets).
    '#weight' => 50,
  );

  $substitutions = array();
  foreach ($view->field as $field_name => $field) {
    $form_element_name = $field_name;
    if (method_exists($field, 'form_element_name')) {
      $form_element_name = $field->form_element_name();
    }
    $method_form_element_row_id_exists = FALSE;
    if (method_exists($field, 'form_element_row_id')) {
      $method_form_element_row_id_exists = TRUE;
    }

    // If the field provides a views form, allow it to modify the $form array.
    $has_form = FALSE;
    if (property_exists($field, 'views_form_callback')) {
      $callback = $field->views_form_callback;
      $callback($view, $field, $form, $form_state);
      $has_form = TRUE;
    }
    elseif (method_exists($field, 'views_form')) {
      $field->views_form($form, $form_state);
      $has_form = TRUE;
    }

    // Build the substitutions array for use in the theme function.
    if ($has_form) {
      foreach ($view->result as $row_id => $row) {
        if ($method_form_element_row_id_exists) {
          $form_element_row_id = $field->form_element_row_id($row_id);
        }
        else {
          $form_element_row_id = $row_id;
        }

        $substitutions[] = array(
          'placeholder' => '<!--form-item-' . $form_element_name . '--' . $form_element_row_id . '-->',
          'field_name' => $form_element_name,
          'row_id' => $form_element_row_id,
        );
      }
    }
  }

  // Give the area handlers a chance to extend the form.
  $area_handlers = array_merge(array_values($view->header), array_values($view->footer));
  $empty = empty($view->result);
  foreach ($area_handlers as $area) {
    if (method_exists($area, 'views_form') && !$area->views_form_empty($empty)) {
      $area->views_form($form, $form_state);
    }
  }

  $form['#substitutions'] = array(
    '#type' => 'value',
    '#value' => $substitutions,
  );
  $form['actions'] = array(
    '#type' => 'container',
    '#attributes' => array('class' => array('form-actions')),
    '#weight' => 100,
  );
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
  );

  return $form;
}

/**
 * Validate handler for the first step of the views form.
 * Calls any existing views_form_validate functions located
 * on the views fields.
 */
function views_form_views_form_validate($form, &$form_state) {
  $view = $form_state['build_info']['args'][0];

  // Call the validation method on every field handler that has it.
  foreach ($view->field as $field_name => $field) {
    if (method_exists($field, 'views_form_validate')) {
      $field->views_form_validate($form, $form_state);
    }
  }

  // Call the validate method on every area handler that has it.
  foreach (array('header', 'footer') as $area) {
    foreach ($view->{$area} as $area_name => $area_handler) {
      if (method_exists($area_handler, 'views_form_validate')) {
        $area_handler->views_form_validate($form, $form_state);
      }
    }
  }
}

/**
 * Submit handler for the first step of the views form.
 * Calls any existing views_form_submit functions located
 * on the views fields.
 */
function views_form_views_form_submit($form, &$form_state) {
  $view = $form_state['build_info']['args'][0];

  // Call the submit method on every field handler that has it.
  foreach ($view->field as $field_name => $field) {
    if (method_exists($field, 'views_form_submit')) {
      $field->views_form_submit($form, $form_state);
    }
  }

  // Call the submit method on every area handler that has it.
  foreach (array('header', 'footer') as $area) {
    foreach ($view->{$area} as $area_name => $area_handler) {
      if (method_exists($area_handler, 'views_form_submit')) {
        $area_handler->views_form_submit($form, $form_state);
      }
    }
  }
}

// ------------------------------------------------------------------
// Exposed widgets form

/**
 * Form builder for the exposed widgets form.
 *
 * Be sure that $view and $display are references.
 */
function views_exposed_form($form, &$form_state) {
  // Don't show the form when batch operations are in progress.
  if ($batch = batch_get() && isset($batch['current_set'])) {
    return array(
      // Set the theme callback to be nothing to avoid errors in template_preprocess_views_exposed_form().
      '#theme' => '',
    );
  }

  // Make sure that we validate because this form might be submitted
  // multiple times per page.
  $form_state['must_validate'] = TRUE;
  $view = &$form_state['view'];
  $display = &$form_state['display'];

  $form_state['input'] = $view->get_exposed_input();

  // Let form plugins know this is for exposed widgets.
  $form_state['exposed'] = TRUE;
  // Check if the form was already created
  if ($cache = views_exposed_form_cache($view->name, $view->current_display)) {
    return $cache;
  }

  $form['#info'] = array();

  // Go through each handler and let it generate its exposed widget.
  foreach ($view->display_handler->handlers as $type => $value) {
    foreach ($view->$type as $id => $handler) {
      if ($handler->can_expose() && $handler->is_exposed()) {
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
        // Grouped exposed filters have their own forms.
        // Instead of render the standard exposed form, a new Select or
        // Radio form field is rendered with the available groups.
        // When an user choose an option the selected value is split
        // into the operator and value that the item represents.
        if ($handler->is_a_group()) {
          $handler->group_form($form, $form_state);
          $id = $handler->options['group_info']['identifier'];
        }
        else {
          $handler->exposed_form($form, $form_state);
        }
merlinofchaos's avatar
merlinofchaos committed
2064
2065
2066
2067
2068
2069
2070
2071
        if ($info = $handler->exposed_info()) {
          $form['#info']["$type-$id"] = $info;
        }
      }
    }
  }

  $form['submit'] = array(
2072
2073
    // Prevent from showing up in $_GET.
    '#name' => '',
merlinofchaos's avatar
merlinofchaos committed
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
    '#type' => 'submit',
    '#value' => t('Apply'),
    '#id' => drupal_html_id('edit-submit-' . $view->name),
  );

  $form['#action'] = url($view->display_handler->get_url());
  $form['#theme'] = views_theme_functions('views_exposed_form', $view, $display);
  $form['#id'] = drupal_clean_css_identifier('views_exposed_form-' . check_plain($view->name) . '-' . check_plain($display->id));
//  $form['#attributes']['class'] = array('views-exposed-form');

  // If using AJAX, we need the form plugin.
  if ($view->use_ajax) {
    drupal_add_library('system', 'jquery.form');
  }

  $exposed_form_plugin = $form_state['exposed_form_plugin'];
  $exposed_form_plugin->exposed_form_alter($form, $form_state);

  // Save the form
  views_exposed_form_cache($view->name, $view->current_display, $form);

  return $form;
}

/**
 * Implement hook_form_alter for the exposed form.
 *
 * Since the exposed form is a GET form, we don't want it to send a wide
 * variety of information.
 */
function views_form_views_exposed_form_alter(&$form, &$form_state) {
  $form['form_build_id']['#access'] = FALSE;
  $form['form_token']['#access'] = FALSE;
  $form['form_id']['#access'] = FALSE;
}

/**
 * Validate handler for exposed filters
 */
function views_exposed_form_validate(&$form, &$form_state) {
  foreach (array('field', 'filter') as $type) {
    $handlers = &$form_state['view']->$type;
    foreach ($handlers as $key => $handler) {
      $handlers[$key]->exposed_validate($form, $form_state);
    }
  }
  $exposed_form_plugin = $form_state['exposed_form_plugin'];
  $exposed_form_plugin->exposed_form_validate($form, $form_state);
}

/**
 * Submit handler for exposed filters
 */
function views_exposed_form_submit(&$form, &$form_state) {
  foreach (array('field', 'filter') as $type) {
    $handlers = &$form_state['view']->$type;
    foreach ($handlers as $key => $info) {
      $handlers[$key]->exposed_submit($form, $form_state);
    }
  }
  $form_state['view']->exposed_data = $form_state['values'];
  $form_state['view']->exposed_raw_input = array();


2138
  $exclude = array('submit', 'form_build_id', 'form_id', 'form_token', 'exposed_form_plugin', '', 'reset');
merlinofchaos's avatar
merlinofchaos committed
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
  $exposed_form_plugin = $form_state['exposed_form_plugin'];
  $exposed_form_plugin->exposed_form_submit($form, $form_state, $exclude);

  foreach ($form_state['values'] as $key => $value) {
    if (!in_array($key, $exclude)) {
      $form_state['view']->exposed_raw_input[$key] = $value;
    }
  }
}

/**
 * Save the Views exposed form for later use.
 *
 * @param $views_name
 *   String. The views name.
 * @param $display_name
 *   String. The current view display name.
 * @param $form_output
 *   Array (optional). The form structure. Only needed when inserting the value.
 * @return
 *   Array. The form structure, if any. Otherwise, return FALSE.
 */
function views_exposed_form_cache($views_name, $display_name, $form_output = NULL) {
2162
2163
2164
  // When running tests for exposed filters, this cache should
  // be cleared between each test.
  $views_exposed = &drupal_static(__FUNCTION__);
merlinofchaos's avatar
merlinofchaos committed
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182

  // Save the form output
  if (!empty($form_output)) {
    $views_exposed[$views_name][$display_name] = $form_output;
    return;
  }

  // Return the form output, if any
  return empty($views_exposed[$views_name][$display_name]) ? FALSE : $views_exposed[$views_name][$display_name];
}

// ------------------------------------------------------------------
// Misc helpers

/**
 * Build a list of theme function names for use most everywhere.
 */
function views_theme_functions($hook, $view, $display = NULL) {
2183
  module_load_include('inc', 'views', 'theme/theme');
merlinofchaos's avatar
merlinofchaos committed
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
  return _views_theme_functions($hook, $view, $display);
}

/**
 * Substitute current time; this works with cached queries.
 */
function views_views_query_substitutions($view) {
  return array(
    '***CURRENT_VERSION***' => VERSION,
    '***CURRENT_TIME***' => REQUEST_TIME,
2194
    '***CURRENT_LANGUAGE***' => language(LANGUAGE_TYPE_CONTENT)->langcode,
2195
    '***DEFAULT_LANGUAGE***' => language_default()->langcode,
merlinofchaos's avatar
merlinofchaos committed
2196
2197
2198
2199
2200
2201
2202
2203
2204
  );
}

/**
 * Implements hook_query_TAG_alter().
 *
 * This is the hook_query_alter() for queries tagged by Views and is used to
 * add in substitutions from hook_views_query_substitutions().
 */
2205
function views_query_views_alter(AlterableInterface $query) {
merlinofchaos's avatar
merlinofchaos committed
2206
2207