CreateDefaultWidgetsHandler.php

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<?php

namespace Elgg\Widgets;

class CreateDefaultWidgetsHandler {
    
    public function __invoke(\Elgg\Event $event) {
        static $processed_events = [];
        
        if (isset($processed_events["{$event->getName()}.{$event->getType()}"])) {
            return;
        }
        
        // only create default widgets once per event
        $processed_events["{$event->getName()}.{$event->getType()}"] = true;
        
        $entity = $event->getObject();
        if (!$entity instanceof \ElggEntity) {
            return;
        }
        
        $default_widget_info = elgg_trigger_event_results('get_list', 'default_widgets', [], []);
        if (empty($default_widget_info)) {
            return;
        }
    
        $type = $entity->getType();
        $subtype = $entity->getSubtype();
    
        foreach ($default_widget_info as $info) {
            if (elgg_extract('event_name', $info) !== $event->getName()) {
                continue;
            }
            
            if (elgg_extract('event_type', $info) !== $event->getType()) {
                continue;
            }
            
            if (elgg_extract('entity_type', $info) !== $type) {
                continue;
            }
    
            $entity_subtype = elgg_extract('entity_subtype', $info, ELGG_ENTITIES_ANY_VALUE);
            if ($entity_subtype !== ELGG_ENTITIES_ANY_VALUE && $entity_subtype !== $subtype) {
                continue;
            }
            
            $widget_context = elgg_extract('widget_context', $info);
            if (empty($widget_context)) {
                continue;
            }
    
            // need to be able to access everything
            elgg_push_context('create_default_widgets');
    
            elgg_call(ELGG_IGNORE_ACCESS, function () use ($entity, $widget_context) {
                // check if there are already widgets
                if (elgg_count_entities([
                    'type' => 'object',
                    'subtype' => 'widget',
                    'owner_guid' => $entity->guid,
                    'metadata_name' => 'context',
                    'metadata_value' => $widget_context,
                ])) {
                    return;
                }
                
                // pull in by widget context with widget owners as the site
                // not using elgg_get_widgets() because it sorts by columns and we don't care right now.
                $widgets = elgg_get_entities([
                    'type' => 'object',
                    'subtype' => 'widget',
                    'owner_guid' => elgg_get_site_entity()->guid,
                    'metadata_name' => 'context',
                    'metadata_value' => $widget_context,
                    'limit' => false,
                    'batch' => true,
                ]);
                
                /* @var \ElggWidget[] $widgets */
                foreach ($widgets as $widget) {
                    // change the container and owner
                    $new_widget = clone $widget;
                    $new_widget->container_guid = $entity->guid;
                    $new_widget->owner_guid = $entity->guid;
            
                    $new_widget->save();
                }
            });
            
            elgg_pop_context();
        }
    }
}