drupal/core/modules/media_library/media_library.module

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<?php
/**
* @file
* Contains hook implementations for the media_library module.
*/
use Drupal\Component\Utility\UrlHelper;
use Drupal\Component\Serialization\Json;
use Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Template\Attribute;
use Drupal\Core\Url;
use Drupal\views\Form\ViewsForm;
use Drupal\views\Plugin\views\cache\CachePluginBase;
use Drupal\views\Plugin\views\query\QueryPluginBase;
use Drupal\views\Plugin\views\query\Sql;
use Drupal\views\ViewExecutable;
/**
* Implements hook_help().
*
* @todo Update in https://www.drupal.org/project/drupal/issues/2964789
*/
function media_library_help($route_name, RouteMatchInterface $route_match) {
switch ($route_name) {
case 'help.page.media_library':
$output = '<h3>' . t('About') . '</h3>';
$output .= '<p>' . t('The Media library module overrides the /admin/content/media view to provide a rich visual interface for performing administrative operations on media. For more information, see the <a href=":media">online documentation for the Media library module</a>.', [':media' => 'https://www.drupal.org/docs/8/core/modules/media']) . '</p>';
return $output;
}
}
/**
* Implements hook_theme().
*/
function media_library_theme() {
return [
'media__media_library' => [
'base hook' => 'media',
],
];
}
/**
* Implements hook_preprocess_view().
*
* Adds a link to add media above the view.
*/
function media_library_preprocess_views_view(&$variables) {
$view = $variables['view'];
if ($view->id() === 'media_library' && $view->current_display === 'widget') {
$url = Url::fromRoute('media_library.upload');
if ($url->access()) {
$url->setOption('query', \Drupal::request()->query->all());
$variables['header']['add_media'] = [
'#type' => 'link',
'#title' => t('Add media'),
'#url' => $url,
'#attributes' => [
'class' => ['button', 'button-action', 'button--primary', 'use-ajax'],
'data-dialog-type' => 'modal',
'data-dialog-options' => Json::encode([
'dialogClass' => 'media-library-widget-modal',
'height' => '75%',
'width' => '75%',
'title' => t('Add media'),
]),
],
];
}
}
}
/**
* Implements hook_views_post_render().
*/
function media_library_views_post_render(ViewExecutable $view, &$output, CachePluginBase $cache) {
if ($view->id() === 'media_library') {
$output['#attached']['library'][] = 'media_library/view';
if ($view->current_display === 'widget') {
$query = array_intersect_key(\Drupal::request()->query->all(), array_flip([
'media_library_widget_id',
'media_library_allowed_types',
'media_library_remaining',
]));
// If the current query contains any parameters we use to contextually
// filter the view, ensure they persist across AJAX rebuilds.
// The ajax_path is shared for all AJAX views on the page, but our query
// parameters are prefixed and should not interfere with any other views.
// @todo Rework or remove this in https://www.drupal.org/node/2983451
if (!empty($query)) {
$ajax_path = &$output['#attached']['drupalSettings']['views']['ajax_path'];
$parsed_url = UrlHelper::parse($ajax_path);
$query = array_merge($query, $parsed_url['query']);
$ajax_path = $parsed_url['path'] . '?' . UrlHelper::buildQuery($query);
if (isset($query['media_library_remaining'])) {
$output['#attached']['drupalSettings']['media_library']['selection_remaining'] = (int) $query['media_library_remaining'];
}
}
}
}
}
/**
* Implements hook_preprocess_media().
*/
function media_library_preprocess_media(&$variables) {
if ($variables['view_mode'] === 'media_library') {
/** @var \Drupal\media\MediaInterface $media */
$media = $variables['media'];
$variables['#cache']['contexts'][] = 'user.permissions';
$rel = $media->access('edit') ? 'edit-form' : 'canonical';
$variables['url'] = $media->toUrl($rel, [
'language' => $media->language(),
]);
$variables['preview_attributes'] = new Attribute();
$variables['preview_attributes']->addClass('media-library-item__preview', 'js-media-library-item-preview', 'js-click-to-select-trigger');
$variables['metadata_attributes'] = new Attribute();
$variables['metadata_attributes']->addClass('media-library-item__attributes');
$variables['status'] = $media->isPublished();
}
}
/**
* Alter the bulk form to add a more accessible label.
*
* @param array $form
* An associative array containing the structure of the form.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The current state of the form.
*
* @todo Remove in https://www.drupal.org/node/2983454
*/
function media_library_form_views_form_media_library_page_alter(array &$form, FormStateInterface $form_state) {
if (isset($form['media_bulk_form']) && isset($form['output'])) {
/** @var \Drupal\views\ViewExecutable $view */
$view = $form['output'][0]['#view'];
foreach (Element::getVisibleChildren($form['media_bulk_form']) as $key) {
if (isset($view->result[$key])) {
$media = $view->field['media_bulk_form']->getEntity($view->result[$key]);
$form['media_bulk_form'][$key]['#title'] = t('Select @label', [
'@label' => $media->label(),
]);
}
}
}
}
/**
* Implements hook_form_alter().
*/
function media_library_form_alter(array &$form, FormStateInterface $form_state, $form_id) {
$form_object = $form_state->getFormObject();
if ($form_object instanceof ViewsForm && strpos($form_object->getBaseFormId(), 'views_form_media_library') === 0) {
$form['#attributes']['class'][] = 'media-library-views-form';
if (isset($form['header'])) {
$form['header']['#attributes']['class'][] = 'media-library-views-form__header';
$form['header']['media_bulk_form']['#attributes']['class'][] = 'media-library-views-form__bulk_form';
}
}
// Add after build to fix media library views exposed filter's submit button.
if ($form_id === 'views_exposed_form' && $form['#id'] === 'views-exposed-form-media-library-widget') {
$form['#after_build'][] = '_media_library_views_form_media_library_after_build';
}
}
/**
* After build callback for views form media library.
*/
function _media_library_views_form_media_library_after_build(array $form, FormStateInterface $form_state) {
// Remove .form-actions from media library views exposed filter actions
// and replace with .media-library-view--form-actions.
//
// This prevents the views exposed filter's 'Apply filter' submit button from
// being moved into the dialog's buttons.
// @see \Drupal\Core\Render\Element\Actions::processActions
// @see Drupal.behaviors.dialog.prepareDialogButtons
if (($key = array_search('form-actions', $form['actions']['#attributes']['class'])) !== FALSE) {
unset($form['actions']['#attributes']['class'][$key]);
}
$form['actions']['#attributes']['class'][] = 'media-library-view--form-actions';
return $form;
}
/**
* Implements hook_views_query_alter().
*
* Alters the widget view's query to only show media that can be selected,
* based on what types are allowed in the field settings.
*
* @todo Remove in https://www.drupal.org/node/2983454
*/
function media_library_views_query_alter(ViewExecutable $view, QueryPluginBase $query) {
if ($query instanceof Sql && $view->id() === 'media_library' && $view->current_display === 'widget') {
$types = _media_library_get_allowed_types();
if ($types) {
$entity_type = \Drupal::entityTypeManager()->getDefinition('media');
$group = $query->setWhereGroup();
$query->addWhere($group, $entity_type->getDataTable() . '.' . $entity_type->getKey('bundle'), $types, 'in');
}
}
}
/**
* Implements hook_form_FORM_ID_alter().
*
* Limits the types available in the exposed filter to avoid users trying to
* filter by a type that is un-selectable.
*
* @see media_library_views_query_alter()
*
* @todo Remove in https://www.drupal.org/node/2983454
*/
function media_library_form_views_exposed_form_alter(array &$form, FormStateInterface $form_state) {
if (isset($form['#id']) && $form['#id'] === 'views-exposed-form-media-library-widget') {
$types = _media_library_get_allowed_types();
if ($types && isset($form['type']['#options'])) {
$keys = array_flip($types);
// Ensure that the default value (by default "All") persists.
if (isset($form['type']['#default_value'])) {
$keys[$form['type']['#default_value']] = TRUE;
}
$form['type']['#options'] = array_intersect_key($form['type']['#options'], $keys);
}
}
}
/**
* Implements hook_field_ui_preconfigured_options_alter().
*/
function media_library_field_ui_preconfigured_options_alter(array &$options, $field_type) {
// If the field is not an "entity_reference"-based field, bail out.
$class = \Drupal::service('plugin.manager.field.field_type')->getPluginClass($field_type);
if (!is_a($class, EntityReferenceItem::class, TRUE)) {
return;
}
// Set the default field widget for media to be the Media library.
if (!empty($options['media'])) {
$options['media']['entity_form_display']['type'] = 'media_library_widget';
}
}
/**
* Implements hook_local_tasks_alter().
*
* Removes tasks for the Media library if the view display no longer exists.
*/
function media_library_local_tasks_alter(&$local_tasks) {
/** @var \Symfony\Component\Routing\RouteCollection $route_collection */
$route_collection = \Drupal::service('router')->getRouteCollection();
foreach (['media_library.grid', 'media_library.table'] as $key) {
if (isset($local_tasks[$key]) && !$route_collection->get($local_tasks[$key]['route_name'])) {
unset($local_tasks[$key]);
}
}
}
/**
* Determines what types are allowed based on the current request.
*
* @return array
* An array of allowed types.
*/
function _media_library_get_allowed_types() {
$types = \Drupal::request()->query->get('media_library_allowed_types');
if ($types && is_array($types)) {
return array_filter($types, 'is_string');
}
return [];
}