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* @license GNU General Public License version 2 or later; see LICENSE.txt */ defined('_JEXEC') or die; use Joomla\CMS\Event as CmsEvent; use Joomla\CMS\Helper\TagsHelper; use Joomla\CMS\Plugin\CMSPlugin; use Joomla\CMS\Table\TableInterface; use Joomla\CMS\Tag\TaggableTableInterface; use Joomla\Event\DispatcherInterface; /** * Implements the Taggable behaviour which allows extensions to automatically support tags for their content items. * * This plugin supersedes JHelperObserverTags. * * @since 4.0.0 */ class PlgBehaviourTaggable extends CMSPlugin { /** * Constructor * * @param DispatcherInterface &$subject The object to observe * @param array $config An optional associative array of configuration settings. * Recognized key values include 'name', 'group', 'params', 'language' * (this list is not meant to be comprehensive). * * @since 4.0.0 */ public function __construct(&$subject, $config = array()) { $this->allowLegacyListeners = false; parent::__construct($subject, $config); } /** * Runs when a new table object is being created * * @param CmsEvent\Table\ObjectCreateEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableObjectCreate(CmsEvent\Table\ObjectCreateEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // If the table already has a tags helper we have nothing to do if (!is_null($table->getTagsHelper())) { return; } $tagsHelper = new TagsHelper; $tagsHelper->typeAlias = $table->typeAlias; $table->setTagsHelper($tagsHelper); // This is required because getTagIds overrides the tags property of the Tags Helper. $cloneHelper = clone $table->getTagsHelper(); $tagIds = $cloneHelper->getTagIds($table->getId(), $table->getTypeAlias()); if (!empty($tagIds)) { $table->getTagsHelper()->tags = explode(',', $tagIds); } } /** * Pre-processor for $table->store($updateNulls) * * @param CmsEvent\Table\BeforeStoreEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableBeforeStore(CmsEvent\Table\BeforeStoreEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // If the table doesn't have a tags helper we can't proceed if (is_null($table->getTagsHelper())) { return; } /** @var TagsHelper $tagsHelper */ $tagsHelper = $table->getTagsHelper(); $tagsHelper->typeAlias = $table->getTypeAlias(); $newTags = $table->newTags ?? array(); if (empty($newTags)) { $tagsHelper->preStoreProcess($table); } else { $tagsHelper->preStoreProcess($table, (array) $newTags); } } /** * Post-processor for $table->store($updateNulls) * * @param CmsEvent\Table\AfterStoreEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableAfterStore(CmsEvent\Table\AfterStoreEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; $result = $event['result']; if (!$result) { return; } if (!is_object($table) || !($table instanceof TaggableTableInterface)) { return; } // If the table doesn't have a tags helper we can't proceed if (is_null($table->getTagsHelper())) { return; } // Get the Tags helper and assign the parsed alias /** @var TagsHelper $tagsHelper */ $tagsHelper = $table->getTagsHelper(); $tagsHelper->typeAlias = $table->getTypeAlias(); $newTags = $table->newTags ?? array(); if (empty($newTags)) { $result = $tagsHelper->postStoreProcess($table); } else { if (is_string($newTags) && (strpos($newTags, ',') !== false)) { $newTags = explode(',', $newTags); } elseif (!is_array($newTags)) { $newTags = (array) $newTags; } $result = $tagsHelper->postStoreProcess($table, $newTags); } } /** * Pre-processor for $table->delete($pk) * * @param CmsEvent\Table\BeforeDeleteEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableBeforeDelete(CmsEvent\Table\BeforeDeleteEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; $pk = $event['pk']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // If the table doesn't have a tags helper we can't proceed if (is_null($table->getTagsHelper())) { return; } // Get the Tags helper and assign the parsed alias $table->getTagsHelper()->typeAlias = $table->getTypeAlias(); $table->getTagsHelper()->deleteTagData($table, $pk); } /** * Handles the tag setting in $table->batchTag($value, $pks, $contexts) * * @param CmsEvent\Table\SetNewTagsEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableSetNewTags(CmsEvent\Table\SetNewTagsEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; $newTags = $event['newTags']; $replaceTags = $event['replaceTags']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // If the table doesn't have a tags helper we can't proceed if (is_null($table->getTagsHelper())) { return; } // Get the Tags helper and assign the parsed alias /** @var TagsHelper $tagsHelper */ $tagsHelper = $table->getTagsHelper(); $tagsHelper->typeAlias = $table->getTypeAlias(); if (!$tagsHelper->postStoreProcess($table, $newTags, $replaceTags)) { throw new RuntimeException($table->getError()); } } /** * Runs when an existing table object is reset * * @param CmsEvent\Table\AfterResetEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableAfterReset(CmsEvent\Table\AfterResetEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // Parse the type alias $tagsHelper = new TagsHelper; $tagsHelper->typeAlias = $table->getTypeAlias(); $table->setTagsHelper($tagsHelper); } /** * Runs when an existing table object has been loaded * * @param CmsEvent\Table\AfterLoadEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onTableAfterLoad(CmsEvent\Table\AfterLoadEvent $event) { // Extract arguments /** @var TableInterface $table */ $table = $event['subject']; // If the tags table doesn't implement the interface bail if (!($table instanceof TaggableTableInterface)) { return; } // If the table doesn't have a tags helper we can't proceed if (is_null($table->getTagsHelper())) { return; } // This is required because getTagIds overrides the tags property of the Tags Helper. $cloneHelper = clone $table->getTagsHelper(); $tagIds = $cloneHelper->getTagIds($table->getId(), $table->getTypeAlias()); if (!empty($tagIds)) { $table->getTagsHelper()->tags = explode(',', $tagIds); } } /** * Runs when an existing table object has been loaded * * @param CmsEvent\Model\BeforeBatchEvent $event The event to handle * * @return void * * @since 4.0.0 */ public function onBeforeBatch(CmsEvent\Model\BeforeBatchEvent $event) { /** @var TableInterface $oldTable */ $sourceTable = $event['src']; if (!($sourceTable instanceof TaggableTableInterface)) { return; } if ($event['type'] === 'copy') { $sourceTable->newTags = $sourceTable->getTagsHelper()->tags; } else { /** * All other batch actions we don't want the tags to be modified so clear the helper - that way no actions * will be performed on store */ $sourceTable->clearTagsHelper(); } } }