views.module 70.9 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\ViewExecutable;
14
use Drupal\Component\Plugin\Exception\PluginException;
15
use Drupal\views\Plugin\Core\Entity\View;
16

17 18 19 20 21
/**
 * Views API version string.
 */
const VIEWS_API_VERSION = '3.0';

merlinofchaos's avatar
merlinofchaos committed
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
/**
 * 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',
46
    $view->storage->get('name'),
merlinofchaos's avatar
merlinofchaos committed
47 48 49 50 51 52
    $view->current_display,
  );

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

53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
/**
 * Implements hook_element_info().
 */
function views_element_info() {
  $types['view'] = array(
    '#theme_wrappers' => array('container'),
    '#pre_render' => array('views_pre_render_view_element'),
    '#name' => NULL,
    '#display_id' => 'default',
    '#arguments' => array(),
  );
  return $types;
}

/**
 * View element pre render callback.
 */
function views_pre_render_view_element($element) {
  $element['#attributes']['class'][] = 'views-element-container';

  $view = views_get_view($element['#name']);
  if ($view && $view->access($element['#display_id'])) {
    $element['view']['#markup'] = $view->preview($element['#display_id'], $element['#arguments']);
  }

  return $element;
}

81 82 83 84 85 86 87 88 89 90 91 92 93
/**
 * Implements hook_config_import_create().
 */
function views_config_import_create($name, $new_config, $old_config) {
  if (strpos($name, 'views.view.') !== 0) {
    return FALSE;
  }

  $view = entity_create('view', $new_config->get());
  $view->save();
  return TRUE;
}

merlinofchaos's avatar
merlinofchaos committed
94 95 96 97
/**
 * Implement hook_theme(). Register views theming functions.
 */
function views_theme($existing, $type, $theme, $path) {
98
  module_load_include('inc', 'views', 'views.theme');
merlinofchaos's avatar
merlinofchaos committed
99 100 101

  // Some quasi clever array merging here.
  $base = array(
102
    'file' => 'views.theme.inc',
merlinofchaos's avatar
merlinofchaos committed
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
  );

  // 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),
  );

135
  $plugins = views_get_plugin_definitions();
merlinofchaos's avatar
merlinofchaos committed
136 137 138 139

  // Register theme functions for all style plugins
  foreach ($plugins as $type => $info) {
    foreach ($info as $plugin => $def) {
140 141 142 143 144
      // Not all plugins have theme functions, and they can also explicitly
      // prevent a theme function from being registered automatically.
      if (!isset($def['theme']) || empty($def['register_theme'])) {
        continue;
      }
merlinofchaos's avatar
merlinofchaos committed
145

146 147 148 149
      $hooks[$def['theme']] = array(
        'pattern' => $def['theme'] . '__',
        'variables' => $variables[$type],
      );
merlinofchaos's avatar
merlinofchaos committed
150

151 152 153 154 155
      if ($def['module'] == 'views') {
        $def['theme_file'] = 'views.theme.inc';
      }
      elseif (isset($def['theme_file'])) {
        $def['theme_path'] = drupal_get_path('module', $def['module']);
merlinofchaos's avatar
merlinofchaos committed
156 157
      }

158 159 160 161 162 163 164 165 166 167
      if (isset($def['theme_path'])) {
        $hooks[$def['theme']]['path'] = $def['theme_path'];
      }
      if (isset($def['theme_file'])) {
        $hooks[$def['theme']]['file'] = $def['theme_file'];
      }
      if (isset($def['theme_path']) && isset($def['theme_file'])) {
        $include = DRUPAL_ROOT . '/' . $def['theme_path'] . '/' . $def['theme_file'];
        if (is_file($include)) {
          require_once $include;
merlinofchaos's avatar
merlinofchaos committed
168 169
        }
      }
170 171 172
      if (!function_exists('theme_' . $def['theme'])) {
        $hooks[$def['theme']]['template'] = drupal_clean_css_identifier($def['theme']);
      }
merlinofchaos's avatar
merlinofchaos committed
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
    }
  }

  $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),
  );

  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();
  $regex = '/' . '\.tpl\.php' . '$' . '/';

209
  // @todo Remove this once #1626580 is committed. For now, We need to remove
dawehner's avatar
dawehner committed
210
  //   the sites/* part of the path because drupal_system_listing() is already
211 212
  //   adding that.
  $path = preg_replace('/^sites\/all\//', '', $path);
dawehner's avatar
dawehner committed
213 214
  $config = str_replace('/', '\/', conf_path());
  $path = preg_replace('/^' . $config . '\//', '', $path);
215

merlinofchaos's avatar
merlinofchaos committed
216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272
  // 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;
}

273 274 275 276 277 278 279 280 281 282 283 284 285
/**
 * 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() {
286
  $plugin_data = views_get_plugin_definitions();
287 288
  $plugins = array();
  foreach (views_get_enabled_views() as $view) {
289
    foreach ($view->get('display') as $display_id => $display) {
290
      foreach ($plugin_data as $type => $info) {
291 292
        if ($type == 'display' && isset($display['display_plugin'])) {
          $name = $display['display_plugin'];
293
        }
294 295
        elseif (isset($display['display_options']["{$type}_plugin"])) {
          $name = $display['display_options']["{$type}_plugin"];
296
        }
297 298
        elseif (isset($display['display_options'][$type]['type'])) {
          $name = $display['display_options'][$type]['type'];
299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
        }
        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.
317
        $plugins[$key]['views'][$view->get('name')] = $view->get('name');
318 319 320 321 322 323
      }
    }
  }
  return $plugins;
}

merlinofchaos's avatar
merlinofchaos committed
324 325 326 327 328 329 330 331 332 333
/**
 * 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(&$vars) {
  // The 'view' attribute of the node is added in views_preprocess_node()
334
  if (!empty($vars['node']->view) && $vars['node']->view->storage->get('name')) {
merlinofchaos's avatar
merlinofchaos committed
335
    $vars['view'] = $vars['node']->view;
336
    $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->storage->get('name');
merlinofchaos's avatar
merlinofchaos committed
337
    if (!empty($vars['node']->view->current_display)) {
338
      $vars['theme_hook_suggestions'][] = 'node__view__' . $vars['node']->view->storage->get('name') . '__' . $vars['node']->view->current_display;
merlinofchaos's avatar
merlinofchaos committed
339 340 341

      // If a node is being rendered in a view, and the view does not have a path,
      // prevent drupal from accidentally setting the $page variable:
342
      if ($vars['page'] && $vars['view_mode'] == 'full' && !$vars['view']->display_handler->hasPath()) {
merlinofchaos's avatar
merlinofchaos committed
343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359
        $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(&$vars) {
  // The 'view' attribute of the node is added in template_preprocess_views_view_row_comment()
360
  if (!empty($vars['comment']->view) && $vars['comment']->view->storage->get('name')) {
361
    $vars['view'] = &$vars['comment']->view;
362
    $vars['theme_hook_suggestions'][] = 'comment__view__' . $vars['comment']->view->storage->get('name');
merlinofchaos's avatar
merlinofchaos committed
363
    if (!empty($vars['node']->view->current_display)) {
364
      $vars['theme_hook_suggestions'][] = 'comment__view__' . $vars['comment']->view->storage->get('name') . '__' . $vars['comment']->view->current_display;
merlinofchaos's avatar
merlinofchaos committed
365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388
    }
  }
}

/**
 * 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() {
389
  // Any event which causes a menu rebuild could potentially mean that the
merlinofchaos's avatar
merlinofchaos committed
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
  // 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
415
  $items['admin/views/ajax/autocomplete/taxonomy/%'] = array(
merlinofchaos's avatar
merlinofchaos committed
416 417 418 419 420 421 422 423 424 425 426 427 428 429 430
    '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();
431
  $views = views_get_applicable_views('uses_hook_menu');
merlinofchaos's avatar
merlinofchaos committed
432 433
  foreach ($views as $data) {
    list($view, $display_id) = $data;
434
    $result = $view->executeHookMenu($display_id, $callbacks);
merlinofchaos's avatar
merlinofchaos committed
435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506
    if (is_array($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;
      }
    }
    $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)) {
507 508
    $view->setDisplay($display_id);
    $view->initHandlers();
merlinofchaos's avatar
merlinofchaos committed
509 510 511 512

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

    $indexes = array();
513
    $path = explode('/', $view->getPath());
merlinofchaos's avatar
merlinofchaos committed
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

    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)) {
554
    return $view->executeDisplay($display_id, $args);
merlinofchaos's avatar
merlinofchaos committed
555 556 557 558 559 560 561 562 563 564 565 566 567
  }

  // 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(&$page) {
  // If the main content of this page contains a view, attach its contextual
  // links to the overall page array. This allows them to be rendered directly
  // next to the page title.
568
  if ($view = views_get_page_view()) {
merlinofchaos's avatar
merlinofchaos committed
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586
    views_add_contextual_links($page, 'page', $view, $view->current_display);
  }
}

/**
 * Implements MODULE_preprocess_HOOK().
 */
function views_preprocess_html(&$variables) {
  // If the page contains a view as its main content, contextual links may have
  // been attached to the page as a whole; for example, by views_page_alter().
  // This allows them to be associated with the page and rendered by default
  // next to the page title (which we want). However, it also causes the
  // Contextual Links module to treat the wrapper for the entire page (i.e.,
  // the <body> tag) as the HTML element that these contextual links are
  // associated with. This we don't want; for better visual highlighting, we
  // prefer a smaller region to be chosen. The region we prefer differs from
  // theme to theme and depends on the details of the theme's markup in
  // page.tpl.php, so we can only find it using JavaScript. We therefore remove
587
  // the "contextual-region" class from the <body> tag here and add
merlinofchaos's avatar
merlinofchaos committed
588 589
  // JavaScript that will insert it back in the correct place.
  if (!empty($variables['page']['#views_contextual_links_info'])) {
590
    $key = array_search('contextual-region', $variables['attributes']['class']->value());
merlinofchaos's avatar
merlinofchaos committed
591
    if ($key !== FALSE) {
592
      unset($variables['attributes']['class'][$key]);
merlinofchaos's avatar
merlinofchaos committed
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
      // 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 $view) {
    // disabled views get nothing.
627
    if (!$view->isEnabled()) {
merlinofchaos's avatar
merlinofchaos committed
628 629 630
      continue;
    }

631 632 633
    $executable = $view->get('executable');
    $executable->initDisplay();
    foreach ($executable->displayHandlers as $display) {
merlinofchaos's avatar
merlinofchaos committed
634

635 636
      if (isset($display) && !empty($display->definition['uses_hook_block'])) {
        $result = $display->executeHookBlockList();
merlinofchaos's avatar
merlinofchaos committed
637 638 639 640 641
        if (is_array($result)) {
          $items = array_merge($items, $result);
        }
      }

642 643
      if (isset($display) && $display->getOption('exposed_block')) {
        $result = $display->getSpecialBlocks();
merlinofchaos's avatar
merlinofchaos committed
644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668
        if (is_array($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.
669
  $old_hashes = state()->get('views_block_hashes');
merlinofchaos's avatar
merlinofchaos committed
670
  if ($hashes != $old_hashes) {
671
    state()->set('views_block_hashes', $hashes);
merlinofchaos's avatar
merlinofchaos committed
672 673 674 675 676 677 678 679 680 681 682 683 684 685
  }

  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) {
686
    $hashes = state()->get('views_block_hashes');
merlinofchaos's avatar
merlinofchaos committed
687 688 689 690 691 692 693 694 695 696 697 698
    if (!empty($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)) {
699
        $view->setDisplay($display_id);
merlinofchaos's avatar
merlinofchaos committed
700
        if (isset($view->display_handler)) {
701
          $output = $view->display_handler->viewSpecialBlocks($type);
merlinofchaos's avatar
merlinofchaos committed
702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721
          // 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)) {
722
      $output = $view->executeDisplay($display_id);
merlinofchaos's avatar
merlinofchaos committed
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
      // 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 $block_type
 *   The type of the block. If it's block it's a regular views display,
 *   but 'special_block_-exp' exist as well.
 */
751
function views_add_block_contextual_links(&$block, ViewExecutable $view, $display_id, $block_type = 'block') {
merlinofchaos's avatar
merlinofchaos committed
752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
  // Do not add contextual links to an empty block.
  if (!empty($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
776 777 778
 * 'contextual_links_locations' properties in the plugin annotation; as a
 * result, these hook implementations have full control over where and how
 * contextual links are rendered for each display.
merlinofchaos's avatar
merlinofchaos committed
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
 *
 * 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
814 815 816
 *   also need to set 'contextual_links_locations' in your plugin annotation to
 *   indicate which view displays support having their contextual links
 *   rendered in the location you have defined.
merlinofchaos's avatar
merlinofchaos committed
817 818 819 820 821 822 823 824 825
 * @param $view
 *   The view whose contextual links will be added.
 * @param $display_id
 *   The ID of the display within $view whose contextual links will be added.
 *
 * @see views_block_view()
 * @see views_page_alter()
 * @see template_preprocess_views_view()
 */
826
function views_add_contextual_links(&$render_element, $location, ViewExecutable $view, $display_id) {
merlinofchaos's avatar
merlinofchaos committed
827 828 829 830 831 832
  // Do not do anything if the view is configured to hide its administrative
  // links.
  if (empty($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.
833 834
    $plugin_id = $view->displayHandlers[$display_id]->getPluginId();
    $plugin = drupal_container()->get('plugin.manager.views.display')->getDefinition($plugin_id);
835
    // If contextual_links_locations are not set, provide a sane default. (To
merlinofchaos's avatar
merlinofchaos committed
836
    // avoid displaying any contextual links at all, a display plugin can still
837
    // set 'contextual_links_locations' to, e.g., {""}.)
838 839 840

    if (!isset($plugin['contextual_links_locations'])) {
      $plugin['contextual_links_locations'] = array('view');
841
    }
842
    elseif ($plugin['contextual_links_locations'] == array() || $plugin['contextual_links_locations'] == array('')) {
843 844
      $plugin['contextual_links_locations'] = array();
    }
845 846 847 848
    else {
      $plugin += array('contextual_links_locations' => array('view'));
    }

merlinofchaos's avatar
merlinofchaos committed
849
    // On exposed_forms blocks contextual links should always be visible.
850 851 852
    $plugin['contextual_links_locations'][] = 'special_block_-exp';
    $has_links = !empty($plugin['contextual links']) && !empty($plugin['contextual_links_locations']);
    if ($has_links && in_array($location, $plugin['contextual_links_locations'])) {
merlinofchaos's avatar
merlinofchaos committed
853 854 855 856 857 858
      foreach ($plugin['contextual links'] as $module => $link) {
        $args = array();
        $valid = TRUE;
        if (!empty($link['argument properties'])) {
          foreach ($link['argument properties'] as $property) {
            // If the plugin is trying to create an invalid contextual link
859 860 861 862
            // (for example, "path/to/{$view->storage->property}", where
            // $view->storage->{property} does not exist), we cannot construct
            // the link, so we skip it.
            if (!property_exists($view->storage, $property)) {
merlinofchaos's avatar
merlinofchaos committed
863 864 865 866
              $valid = FALSE;
              break;
            }
            else {
867
              $args[] = $view->storage->{$property};
merlinofchaos's avatar
merlinofchaos committed
868 869 870 871 872 873 874 875 876 877
            }
          }
        }
        // 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,
878
            'view_name' => $view->storage->get('name'),
merlinofchaos's avatar
merlinofchaos committed
879 880 881 882 883 884 885 886 887
            'view_display_id' => $display_id,
          );
        }
      }
    }
  }
}

/**
888
 * Prepares a list of language names.
merlinofchaos's avatar
merlinofchaos committed
889
 *
890
 * This is a wrapper around language_list to return a plain key value array.
merlinofchaos's avatar
merlinofchaos committed
891
 *
892 893 894 895 896 897 898 899 900
 * @param string $field
 *   The field of the language object which should be used as the value of the
 *   array.
 * @param int $flags
 *   (optional) Specifies the state of the languages that have to be returned.
 *   It can be: LANGUAGE_CONFIGURABLE, LANGUAGE_LOCKED, LANGUAGE_ALL.
 *
 * @return array
 *   An array of language names (or $field) keyed by the langcode.
merlinofchaos's avatar
merlinofchaos committed
901 902 903
 *
 * @see locale_language_list()
 */
904 905
function views_language_list($field = 'name', $flags = LANGUAGE_ALL) {
  $languages = language_list($flags);
merlinofchaos's avatar
merlinofchaos committed
906 907
  $list = array();
  foreach ($languages as $language) {
908
    $list[$language->langcode] = ($field == 'name') ? t($language->name) : $language->$field;
merlinofchaos's avatar
merlinofchaos committed
909 910 911 912 913
  }
  return $list;
}

/**
914
 * Implements hook_cache_flush().
merlinofchaos's avatar
merlinofchaos committed
915
 */
916
function views_cache_flush() {
917
  return array('views_info', 'views_results');
merlinofchaos's avatar
merlinofchaos committed
918 919 920 921 922 923
}

/**
 * Implements hook_field_create_instance.
 */
function views_field_create_instance($instance) {
924 925
  cache('views_info')->deleteAll();
  cache('views_results')->deleteAll();
merlinofchaos's avatar
merlinofchaos committed
926 927 928 929 930 931
}

/**
 * Implements hook_field_update_instance.
 */
function views_field_update_instance($instance, $prior_instance) {
932 933
  cache('views_info')->deleteAll();
  cache('views_results')->deleteAll();
merlinofchaos's avatar
merlinofchaos committed
934 935 936 937 938 939
}

/**
 * Implements hook_field_delete_instance.
 */
function views_field_delete_instance($instance) {
940 941
  cache('views_info')->deleteAll();
  cache('views_results')->deleteAll();
merlinofchaos's avatar
merlinofchaos committed
942 943 944 945 946 947
}

/**
 * Invalidate the views cache, forcing a rebuild on the next grab of table data.
 */
function views_invalidate_cache() {
948
  // Clear the views cache.
949
  cache('views_info')->deleteAll();
950 951

  // Clear the page and block cache.
952
  cache_delete_tags(array('content' => TRUE));
953 954

  // Set the menu as needed to be rebuilt.
955
  state()->set('menu_rebuild_needed', TRUE);
956 957 958

  // Allow modules to respond to the Views cache being cleared.
  module_invoke_all('views_invalidate_cache');
merlinofchaos's avatar
merlinofchaos committed
959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
}

/**
 * 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);
}

/**
 * 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.
 *
1051
 * @return Drupal\views\ViewExecutable
merlinofchaos's avatar
merlinofchaos committed
1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
 *   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
 *
1062
 * @return Drupal\views\ViewExecutable
merlinofchaos's avatar
merlinofchaos committed
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
 */
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.
 *
1078
 * @return Drupal\views\ViewExecutable
merlinofchaos's avatar
merlinofchaos committed
1079 1080 1081 1082 1083 1084 1085 1086 1087
 */
function &views_get_current_view() {
  return views_set_current_view();
}

/**
 * Include views .inc files as necessary.
 */
function views_include($file) {
1088
  module_load_include('inc', 'views', 'includes/' . $file);
merlinofchaos's avatar
merlinofchaos committed
1089 1090
}

1091 1092 1093 1094 1095 1096 1097
/**
 * Implements hook_hook_info().
 */
function views_hook_info() {
  $hooks['views_data'] = array(
    'group' => 'views',
  );
1098 1099 1100
  $hooks['views_data_alter'] = array(
    'group' => 'views',
  );
1101 1102 1103
  $hooks['views_query_substitutions'] = array(
    'group' => 'views',
  );
1104 1105 1106
  $hooks['views_form_substitutions'] = array(
    'group' => 'views',
  );
1107 1108

  return $hooks;
merlinofchaos's avatar
merlinofchaos committed
1109 1110 1111
}

/**
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
 * Implements hook_library_info().
 */
function views_library_info() {
  $path = drupal_get_path('module', 'views') . '/js';
  $libraries['views.ajax'] = array(
    'title' => 'Views AJAX',
    'version' => VERSION,
    'js' => array(
      "$path/base.js" => array('group' => JS_DEFAULT),
      "$path/ajax.js" => array('group' => JS_DEFAULT),
      "$path/ajax_view.js" => array('group' => JS_DEFAULT),
    ),
    'dependencies' => array(
      array('system', 'jquery'),
      array('system', 'drupal'),
      array('system', 'drupalSettings'),
      array('system', 'jquery.once'),
      array('system', 'jquery.form'),
      array('system', 'drupal.ajax'),
    ),
  );
merlinofchaos's avatar
merlinofchaos committed
1133

1134
  return $libraries;
merlinofchaos's avatar
merlinofchaos committed
1135 1136 1137 1138 1139 1140 1141 1142 1143
}

/**
 * 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.
1144
 * @param $type
merlinofchaos's avatar
merlinofchaos committed
1145 1146 1147 1148 1149 1150 1151 1152 1153
 *   The type of handler. i.e, sort, field, argument, filter, relationship
 * @param $override
 *   Override the actual handler object with this class. Used for
 *   aggregation when the handler is redirected to the aggregation
 *   handler.
 *
 * @return views_handler
 *   An instance of a handler object. May be views_handler_broken.
 */
1154
function views_get_handler($table, $field, $type, $override = NULL) {
1155 1156
  // Get the plugin manager for this type.
  $manager = drupal_container()->get("plugin.manager.views.$type");
merlinofchaos's avatar
merlinofchaos committed
1157

1158
  $data = views_fetch_data($table);
1159
  if (isset($data[$field][$type])) {
1160
    $definition = $data[$field][$type];
1161
    foreach (array('group', 'title', 'title short', 'help', 'real field', 'real table') as $key) {
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
      if (!isset($definition[$key])) {
        // First check the field level
        if (!empty($data[$field][$key])) {
          $definition[$key] = $data[$field][$key];
        }
        // Then if that doesn't work, check the table level
        elseif (!empty($data['table'][$key])) {
          $definition[$key] = $data['table'][$key];
        }
      }
    }

    // @todo This is crazy. Find a way to remove the override functionality.
1175
    $plugin_id = $override ?: $definition['id'];
1176
    // Try to use the overridden handler.
1177
    try {
1178
      return $manager->createInstance($plugin_id, $definition);
1179 1180
    }
    catch (PluginException $e) {
1181 1182 1183 1184 1185 1186 1187
      // If that fails, use the original handler.
      try {
        return $manager->createInstance($definition['id'], $definition);
      }
      catch (PluginException $e) {
        // Deliberately empty, this case is handled generically below.
      }
1188
    }
merlinofchaos's avatar
merlinofchaos committed
1189 1190
  }

1191 1192
  // Finally, use the 'broken' handler.
  debug(t("Missing handler: @table @field @type", array('@table' => $table, '@field' => $field, '@type' => $type)));
1193
  return $manager->createInstance('broken');
merlinofchaos's avatar
merlinofchaos committed
1194 1195 1196 1197
}

/**
 * Fetch Views' data from the cache
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210
 *
 * $param string|null $table
 *   (optional) The name of the table for which to fetch Views' data. If
 *   NULL, data for all tables will be retrieved
 * @param bool $reset
 *   (optional) Whether to rebuild the cache. Defaults to FALSE.
 *
 * @return array
 *   An associative array of views data for the given table. If $table is
 *   NULL, the array will be keyed by table name, with each key corresponding
 *   to the data array for that table.
 *
 * @see hook_views_data()
merlinofchaos's avatar
merlinofchaos committed
1211
 */
1212
function views_fetch_data($table = NULL, $reset = FALSE) {
merlinofchaos's avatar
merlinofchaos committed
1213
  views_include('cache');
1214
  return _views_fetch_data($table, $reset);
merlinofchaos's avatar
merlinofchaos committed
1215 1216
}

1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 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
/**
 * Fetch a list of all base tables available
 *
 * @return array
 *   A keyed array of in the form of 'base_table' => 'Description'.
 */
function views_fetch_base_tables() {
  static $base_tables = array();
  if (empty($base_tables)) {
    $tables = array();
    $data = views_fetch_data();
    foreach ($data as $table => $info) {
      if (!empty($info['table']['base'])) {
        $tables[$table] = array(
          'title' => $info['table']['base']['title'],
          'description' => !empty($info['table']['base']['help']) ? $info['table']['base']['help'] : '',
          'weight' => !empty($info['table']['base']['weight']) ? $info['table']['base']['weight'] : 0,
        );
      }
    }
    uasort($tables, '_views_weight_sort');
    $base_tables = $tables;
  }

  return $base_tables;
}

/**
 * Sorts a structured array by the 'weight' and then by 'title' element.
 *
 * Callback for uasort() in views_fetch_base_tables().
 *
 * @param array $a
 *   First item for comparison. The compared items should be associative arrays
 *   that include a 'weight' and title element.
 * @param array $b
 *   Second item for comparison.
 *
 * @return int
 *   -1 if the first item comes first, 1 if second and 0 if they have the same
 *   order.
 */
function _views_weight_sort($a, $b) {
  if ($a['weight'] != $b['weight']) {
    return $a['weight'] < $b['weight'] ? -1 : 1;
  }
  if ($a['title'] != $b['title']) {
    return $a['title'] < $b['title'] ? -1 : 1;
  }

  return 0;
}

merlinofchaos's avatar
merlinofchaos committed
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284
/**
 * 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()) {
1285
  $definitions = drupal_container()->get("plugin.manager.views.$type")->getDefinitions();
1286
  $plugins = array();
merlinofchaos's avatar
merlinofchaos committed
1287

aspilicious's avatar
aspilicious committed
1288
  foreach ($definitions as $id => $plugin) {
1289 1290 1291 1292
    // Skip plugins that don't conform to our key.
    if ($key && (empty($plugin['type']) || $plugin['type'] != $key)) {
      continue;
    }
1293 1294 1295 1296 1297
    // @todo While Views is providing on behalf of core modules, check to see
    //   if they are enabled or not.
    if (isset($plugin['module']) && !module_exists($plugin['module'])) {
      continue;
    }
1298

1299
    if (empty($plugin['no_ui']) && (empty($base) || empty($plugin['base']) || array_intersect($base, $plugin['base']))) {
aspilicious's avatar
aspilicious committed
1300
      $plugins[$id] = $plugin['title'];
merlinofchaos's avatar
merlinofchaos committed
1301 1302 1303
    }
  }

1304 1305 1306
  if (!empty($plugins)) {
    asort($plugins);
    return $plugins;
merlinofchaos's avatar
merlinofchaos committed
1307
  }
1308

merlinofchaos's avatar
merlinofchaos committed
1309 1310 1311 1312
  // fall-through
  return array();
}

1313
/**
1314 1315 1316
 * Gets all the views plugin definitions.
 *
 * @return array
1317
 *   An array of plugin definitions for all types.
1318
 */
1319
function views_get_plugin_definitions() {
1320
  $container = drupal_container();
1321 1322
  $plugins = array();
  foreach (ViewExecutable::getPluginTypes() as $plugin_type) {
1323
    $plugins[$plugin_type] = $container->get("plugin.manager.views.$plugin_type")->getDefinitions();
1324 1325
  }

1326
  return $plugins;
1327 1328
}

1329 1330 1331 1332
/**
 * Get enabled display extenders.
 */
function views_get_enabled_display_extenders() {
1333
  $enabled = array_filter((array) config('views.settings')->get('display_extenders'));
1334

1335
  return drupal_map_assoc($enabled);
1336 1337
}

merlinofchaos's avatar
merlinofchaos committed
1338 1339 1340
/**
 * Create an empty view to work with.
 *
1341
 * @return Drupal\views\Plugin\Core\Entity\View
merlinofchaos's avatar
merlinofchaos committed
1342 1343 1344 1345
 *   A fully formed, empty $view object. This object must be populated before
 *   it can be successfully saved.
 */
function views_new_view() {
1346
  return entity_create('view', array());
merlinofchaos's avatar
merlinofchaos committed
1347 1348
}

1349 1350 1351
/**
 * Creates a view from an array of values.
 *
1352
 * @return Drupal\views\Plugin\Core\Entity\View
1353 1354 1355 1356 1357 1358
 *   A fully formed $view object with properties from the values passed in.
 */
function views_create_view(array $values = array()) {
  return entity_create('view', $values);
}

merlinofchaos's avatar
merlinofchaos committed
1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
/**
 * 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 $view) {
    // Skip disabled views.
1379
    if (!$view->isEnabled()) {
merlinofchaos's avatar
merlinofchaos committed
1380 1381 1382
      continue;
    }

1383 1384
    $display = $view->get('display');
    if (empty($display)) {
merlinofchaos's avatar
merlinofchaos committed
1385 1386 1387 1388
      // Skip this view as it is broken.
      continue;
    }

1389 1390 1391 1392 1393 1394
    // Check each display to see if it meets the criteria and is enabled.
    $executable = $view->get('executable');
    $executable->setDisplay();
    foreach ($executable->displayHandlers as $id => $handler) {
      if (!empty($handler->definition[$type]) && $handler->isEnabled()) {
        $result[] = array($executable, $id);
merlinofchaos's avatar
merlinofchaos committed
1395 1396 1397 1398 1399 1400 1401
      }
    }
  }
  return $result;
}

/**
1402
 * Returns an array of all views as fully loaded $view objects.
merlinofchaos's avatar
merlinofchaos committed
1403
 */
1404
function views_get_all_views() {
1405
  return entity_get_controller('view')->load();
1406 1407
}

merlinofchaos's avatar
merlinofchaos committed
1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
/**
 * 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
1436
 *  - views object (containing $exclude_view->storage->name and $exclude_view->current_display)
merlinofchaos's avatar
merlinofchaos committed
1437 1438 1439 1440 1441
 *  - 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
1442 1443
 * @param bool $sort
 *  If TRUE, the list of views is sorted ascending.
merlinofchaos's avatar
merlinofchaos committed
1444 1445 1446 1447 1448
 *
 * @return array
 *  an associative array for use in select.
 *  - key: view name and display id separated by ':', or the view name only
 */
1449
function views_get_views_as_options($views_only = FALSE, $filter = 'all', $exclude_view = NULL, $optgroup = FALSE, $sort = FALSE) {
merlinofchaos's avatar
merlinofchaos committed
1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468

  // 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)) {
1469
    $exclude_view_name = $exclude_view->storage->id();
merlinofchaos's avatar
merlinofchaos committed
1470 1471 1472
    $exclude_view_display = $exclude_view->current_display;
  }
  else {
1473 1474 1475
    // Append a ':' to the $exclude_view string so we always have more than one
    // item to explode.
    list($exclude_view_name, $exclude_view_display) = explode(':', "$exclude_view:");
merlinofchaos's avatar
merlinofchaos committed
1476 1477 1478 1479
  }

  $options = array();
  foreach ($views as $view) {
1480
    $id = $view->id();
merlinofchaos's avatar
merlinofchaos committed
1481
    // Return only views.
1482 1483
    if ($views_only && $id != $exclude_view_name) {
      $options[$id] = $view->getHumanName();
merlinofchaos's avatar
merlinofchaos committed
1484 1485 1486
    }
    // Return views with display ids.
    else {
1487
      foreach ($view->get('display') as $display_id => $display) {
1488
        if (!($id == $exclude_view_name && $display_id == $exclude_view_display)) {
merlinofchaos's avatar
merlinofchaos committed
1489
          if ($optgroup) {
1490
            $options[$id][$id . ':' . $display['id']] = t('@view : @display', array('@view' => $id, '@display' => $display['id']));
merlinofchaos's avatar
merlinofchaos committed
1491 1492
          }
          else {
1493
            $options[$id . ':' . $display['id']] = t('View: @view - Display: @display', array('@view' => $id, '@display' => $display['id']));
merlinofchaos's avatar
merlinofchaos committed
1494 1495 1496 1497 1498
          }
        }
      }
    }
  }
1499 1500 1501
  if ($sort) {
    ksort($options);
  }
merlinofchaos's avatar
merlinofchaos committed
1502 1503 1504 1505
  return $options;
}

/**
dawehner's avatar
dawehner committed
1506 1507
 * Returns whether the view is enabled.
 *
1508
 * @param Drupal\views\Plugin\Core\Entity\View $view
xjm's avatar
xjm committed
1509
 *   The view object to check.
dawehner's avatar
dawehner committed
1510 1511 1512
 *
 * @return bool
 *   Returns TRUE if a view is enabled, FALSE otherwise.
merlinofchaos's avatar
merlinofchaos committed
1513
 */
1514
function views_view_is_enabled(View $view) {
dawehner's avatar
dawehner committed
1515
  return $view->isEnabled();
merlinofchaos's avatar
merlinofchaos committed
1516 1517 1518
}

/**
dawehner's avatar
dawehner committed
1519 1520
 * Returns whether the view is disabled.
 *
1521