ElggAnnotation.php

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<?php

class ElggAnnotation extends \ElggExtender {

    protected function initializeAttributes() {
        parent::initializeAttributes();

        $this->attributes['type'] = 'annotation';
    }

    public function __construct(stdClass $row = null) {
        $this->initializeAttributes();

        if ($row) {
            foreach ((array) $row as $key => $value) {
                $this->$key = $value;
            }
        }
    }

    public function save(): bool {
        if (!isset($this->access_id)) {
            $this->access_id = ACCESS_PRIVATE;
        }

        if (!isset($this->owner_guid)) {
            $this->owner_guid = _elgg_services()->session_manager->getLoggedInUserGuid();
        }

        if ($this->id) {
            return _elgg_services()->annotationsTable->update($this);
        }

        if (!isset($this->entity_guid)) {
            return false;
        }

        $entity = get_entity($this->entity_guid);
        if (!$entity) {
            return false;
        }

        if (_elgg_services()->annotationsTable->create($this, $entity)) {
            return true;
        }

        return false;
    }

    public function delete(): bool {
        return _elgg_services()->annotationsTable->delete($this);
    }
    
    public function canEdit(int $user_guid = 0): bool {
        return _elgg_services()->userCapabilities->canEditAnnotation($this->getEntity(), $user_guid, $this);
    }

    public function getObjectFromID(int $id) {
        return elgg_get_annotation_from_id($id);
    }
}