Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* @file
* Contains islandora.module.
*
* This file is part of the Islandora Project.
*
* (c) Islandora Foundation
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @author Diego Pino Navarro <dpino@metro.org> https://github.com/diegopino
*/
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\islandora\Form\IslandoraSettingsForm;
use Drupal\islandora\GeminiLookup;
use Drupal\node\NodeInterface;
use Drupal\media\MediaInterface;
use Drupal\file\FileInterface;
use Drupal\taxonomy\TermInterface;
use Drupal\Core\Routing\RouteMatchInterface;
/**
* Implements hook_help().
*/
function islandora_help($route_name, RouteMatchInterface $route_match) {
switch ($route_name) {
// Main module help for the islandora module.
case 'help.page.islandora':
$output = '';
$output .= '<h3>' . t('About') . '</h3>';
$output .= '<p>' . t('Islandora integrates Drupal with a Fedora repository.') . '</p>';
return $output;
default:
}
}
/**
* Implements hook_rdf_namespaces().
*/
function islandora_rdf_namespaces() {
// Yes, it's amazing, rdf is not registered by default!
return [
'ldp' => 'http://www.w3.org/ns/ldp#',
'dc11' => 'http://purl.org/dc/elements/1.1/',
'nfo' => 'http://www.semanticdesktop.org/ontologies/2007/03/22/nfo/v1.1/',
'ebucore' => 'http://www.ebu.ch/metadata/ontologies/ebucore/ebucore#',
'fedora' => 'http://fedora.info/definitions/v4/repository#',
'owl' => 'http://www.w3.org/2002/07/owl#',
'ore' => 'http://www.openarchives.org/ore/terms/',
'rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
'islandora' => 'http://islandora.ca/CLAW/',
'pcdm' => 'http://pcdm.org/models#',
'use' => 'http://pcdm.org/use#',
'iana' => 'http://www.iana.org/assignments/relation/',
];
}
/**
* Implements hook_node_insert().
*/
function islandora_node_insert(NodeInterface $node) {
$utils = \Drupal::service('islandora.utils');
// Execute index reactions.
$utils->executeNodeReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $node);
}
/**
* Implements hook_node_update().
*/
function islandora_node_update(NodeInterface $node) {
$utils = \Drupal::service('islandora.utils');
if (!$utils->haveFieldsChanged($node, $node->original)) {
return;
};
// Execute index reactions.
$utils->executeNodeReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $node);
}
/**
* Implements hook_node_delete().
*/
function islandora_node_delete(NodeInterface $node) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeNodeReactions('\Drupal\islandora\Plugin\ContextReaction\DeleteReaction', $node);
}
/**
* Implements hook_media_insert().
*/
function islandora_media_insert(MediaInterface $media) {
$utils = \Drupal::service('islandora.utils');
// Execute index reactions.
$utils->executeMediaReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $media);
// If it has a parent node...
$node = $utils->getParentNode($media);
if ($node) {
// Fire off derivative reactions for the Media.
$utils->executeDerivativeReactions(
'\Drupal\islandora\Plugin\ContextReaction\DerivativeReaction',
$node,
$media
);
}
}
/**
* Implements hook_media_update().
*/
function islandora_media_update(MediaInterface $media) {
$media_source_service = \Drupal::service('islandora.media_source_service');
// Exit early if nothing's changed.
$utils = \Drupal::service('islandora.utils');
if (!$utils->haveFieldsChanged($media, $media->original)) {
return;
};
// Execute index reactions.
$utils->executeMediaReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $media);
// Does it have a source field?
$source_field = $media_source_service->getSourceFieldName($media->bundle());
if (empty($source_field)) {
return;
}
// Exit early if the source file did not change.
if ($media->get($source_field)->equals($media->original->get($source_field))) {
return;
}
// If it has a parent node...
$node = $utils->getParentNode($media);
if ($node) {
// Fire off derivative reactions for the Media.
$utils->executeDerivativeReactions(
'\Drupal\islandora\Plugin\ContextReaction\DerivativeReaction',
$node,
$media
);
}
}
/**
* Implements hook_media_delete().
*/
function islandora_media_delete(MediaInterface $media) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeMediaReactions('\Drupal\islandora\Plugin\ContextReaction\DeleteReaction', $media);
}
/**
* Implements hook_file_insert().
*/
function islandora_file_insert(FileInterface $file) {
$utils = \Drupal::service('islandora.utils');
// Execute index reactions.
$utils->executeFileReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $file);
}
/**
* Implements hook_file_update().
*/
function islandora_file_update(FileInterface $file) {
// Exit early if unchanged.
if ($file->filehash['sha1'] == $file->original->filehash['sha1']) {
return;
}
$utils = \Drupal::service('islandora.utils');
// Execute index reactions.
$utils->executeFileReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $file);
// Execute derivative reactions.
foreach ($utils->getReferencingMedia($file->id()) as $media) {
$node = $utils->getParentNode($media);
if ($node) {
$utils->executeDerivativeReactions(
'\Drupal\islandora\Plugin\ContextReaction\DerivativeReaction',
$node,
$media
);
}
}
}
/**
* Implements hook_file_delete().
*/
function islandora_file_delete(FileInterface $file) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeFileReactions('\Drupal\islandora\Plugin\ContextReaction\DeleteReaction', $file);
}
/**
* Implements hook_taxonomy_term_insert().
*/
function islandora_taxonomy_term_insert(TermInterface $term) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeTermReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $term);
}
/**
* Implements hook_taxonomy_term_update().
*/
function islandora_taxonomy_term_update(TermInterface $term) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeTermReactions('\Drupal\islandora\Plugin\ContextReaction\IndexReaction', $term);
}
/**
* Implements hook_taxonomy_term_delete().
*/
function islandora_taxonomy_term_delete(TermInterface $term) {
$utils = \Drupal::service('islandora.utils');
// Execute delete reactions.
$utils->executeTermReactions('\Drupal\islandora\Plugin\ContextReaction\DeleteReaction', $term);
}
/**
* Implements hook_jsonld_alter_normalized_array().
*/
function islandora_jsonld_alter_normalized_array(EntityInterface $entity, array &$normalized, array $context) {
$context_manager = \Drupal::service('context.manager');
foreach ($context_manager->getActiveReactions('\Drupal\islandora\ContextReaction\NormalizerAlterReaction') as $reaction) {
$reaction->execute($entity, $normalized, $context);
}
}
/**
* Implements hook_entity_view_mode_alter().
*/
function islandora_entity_view_mode_alter(&$view_mode, EntityInterface $entity) {
// Change the view mode based on user input from a 'view_mode_alter'
// ContextReaction.
$storage = \Drupal::service('entity_type.manager')->getStorage('entity_view_mode');
$context_manager = \Drupal::service('context.manager');
$current_entity = \Drupal::routeMatch()->getParameter('node');
$current_id = ($current_entity instanceof NodeInterface) ? $current_entity->id() : NULL;
if (isset($current_id) && $current_id == $entity->id()) {
foreach ($context_manager->getActiveReactions('\Drupal\islandora\Plugin\ContextReaction\ViewModeAlterReaction') as $reaction) {
// Construct the new view mode's machine name.
$entity_type = $entity->getEntityTypeId();
$mode = $reaction->execute();
$machine_name = "$entity_type.$mode";
// Try to load it.
$new_mode = $storage->load($machine_name);
// If successful, alter the view mode.
if ($new_mode) {
$view_mode = $mode;
}
else {
// Otherwise, leave it be, but log a message.
\Drupal::logger('islandora')
->info("EntityViewMode $machine_name does not exist. View mode cannot be altered.");
}
}
}
}
/**
* Implements hook_preprocess_node().
*/
function islandora_preprocess_node(&$variables) {
// Using alternate view modes causes on a node's canoncial page
// causes the title to get printed out twice. Once from the
// fields themselves and again as a block above the main content.
// Setting 'page' to TRUE gets rid of the title in the fields and
// leaves the block. This makes it look uniform with the 'default'
// view mode.
if (node_is_page($variables['elements']['#node'])) {
$variables['page'] = TRUE;
}
}
/**
* Implements hook_entity_form_display_alter().
*/
function islandora_entity_form_display_alter(&$form_display, $context) {
// Change the form display based on user input from a 'form_display_alter'
// ContextReaction.
$storage = \Drupal::service('entity_type.manager')->getStorage('entity_form_display');
$context_manager = \Drupal::service('context.manager');
// Alter form display based on context.
foreach ($context_manager->getActiveReactions('\Drupal\islandora\Plugin\ContextReaction\FormDisplayAlterReaction') as $reaction) {
// Construct the new form display's machine name.
$entity_type = $context['entity_type'];
$bundle = $context['bundle'];
$mode = $reaction->execute();
$machine_name = "$entity_type.$bundle.$mode";
// Try to load it.
$new_display = $storage->load($machine_name);
// If successful, alter the form display.
if ($new_display) {
$form_display = $new_display;
}
else {
// Otherwise, leave it be, but log a message.
\Drupal::logger('islandora')->info("EntityFormDisplay $machine_name does not exist. Form display cannot be altered.");
}
}
}
/**
* Implements hook_form_form_id_alter().
*/
function islandora_form_block_form_alter(&$form, FormStateInterface $form_state, $form_id) {
// Unset our custom conditions. There's too many to use well within
// the core block placement UI, and no other reasonable way to filter
// them out. See https://www.drupal.org/node/2284687. Use
// /admin/structure/context instead if you want to use these conditions
// to alter block layout.
unset($form['visibility']['content_entity_type']);
unset($form['visibility']['parent_node_has_term']);
unset($form['visibility']['media_has_term']);
unset($form['visibility']['file_uses_filesystem']);
unset($form['visibility']['node_has_term']);
unset($form['visibility']['media_uses_filesystem']);
}
/**
* Implements hook_entity_extra_field_info().
*/
function islandora_entity_extra_field_info() {
$config_factory = \Drupal::service('config.factory')->get(IslandoraSettingsForm::CONFIG_NAME);
$extra_field = [];
$pseudo_bundles = $config_factory->get(IslandoraSettingsForm::GEMINI_PSEUDO) ? $config_factory->get(IslandoraSettingsForm::GEMINI_PSEUDO) : [];
foreach ($pseudo_bundles as $key) {
list($bundle, $content_entity) = explode(":", $key);
$extra_field[$content_entity][$bundle]['display']['field_gemini_uri'] = [
'label' => t('Fedora URI'),
'description' => t('The URI to the persistent'),
'weight' => 100,
'visible' => TRUE,
];
}
return $extra_field;
}
/**
* Implements hook_entity_view().
*/
function islandora_entity_view(array &$build, EntityInterface $entity, EntityViewDisplayInterface $display, $view_mode) {
$route_match_item = \Drupal::routeMatch()->getParameters()->all();
// Get the parameter, which might be node, media or taxonomy term.
$current_entity = reset($route_match_item);
// Match exactly to ensure they are the same entity type too.
if ($entity === $current_entity) {
if ($display->getComponent('field_gemini_uri')) {
$gemini = \Drupal::service('islandora.gemini.lookup');
if ($gemini instanceof GeminiLookup) {
$fedora_uri = $gemini->lookup($entity);
if (!is_null($fedora_uri)) {
$build['field_gemini_uri'] = [
'#type' => 'container',
'#attributes' => [
'id' => 'field-gemini-uri',
],
'internal_label' => [
'#type' => 'item',
'#title' => t('Fedora URI'),
'internal_uri' => [
'#type' => 'link',
'#title' => t("@url", ['@url' => $fedora_uri]),
'#url' => Url::fromUri($fedora_uri),
],
],
];
}
}
}
}
}