class.ilDashboardLearningSequenceGUI.php

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<?php

declare(strict_types=1);

use ILIAS\UI\Component\Symbol\Icon\Standard;
use ILIAS\components\Dashboard\Block\BlockDTO;

class ilDashboardLearningSequenceGUI extends ilDashboardBlockGUI
{
    protected function getIcon(string $title): Standard
    {
        if (!isset($this->icon) || is_null($this->icon)) {
            $this->icon = $this->factory->symbol()->icon()->standard(
                'lso',
                $title,
                'medium'
            );
        }

        return $this->icon;
    }

    public function emptyHandling(): string
    {
        return '';
    }

    public function initViewSettings(): void
    {
        $this->viewSettings = new ilPDSelectedItemsBlockViewSettings(
            $this->user,
            ilPDSelectedItemsBlockConstants::VIEW_LEARNING_SEQUENCES
        );

        $this->ctrl->setParameter($this, 'view', $this->viewSettings->getCurrentView());
    }

    public function initData(): void
    {
        $data = [];
        $assignments = ilParticipants::_getMembershipByType($this->user->getId(), ['lso']);
        foreach ($assignments as $assignment) {
            $ref_ids = ilObject::_getAllReferences($assignment);
            $lso_ref_id = array_shift($ref_ids);

            $lso_obj = ilObjLearningSequence::getInstanceByRefId($lso_ref_id);

            if (!$lso_obj) {
                continue;
            }

            if (!$this->isRelevantLso($lso_obj)) {
                continue;
            }

            if (!$this->access->checkAccess('read', '', $lso_ref_id)) {
                continue;
            }

            $data[] = new BlockDTO(
                'lso',
                $lso_ref_id,
                $lso_obj->getId(),
                $lso_obj->getTitle(),
                $lso_obj->getDescription(),
            );
        }

        $this->setData(['' => $data]);
    }

    protected function isRelevantLso(ilObjLearningSequence $obj): bool
    {
        $ls_lp_items = $obj->getLSLearnerItems($this->user->getId());
        if ($ls_lp_items === []) {
            return false;
        }

        foreach ($ls_lp_items as $item) {
            if ($item->getLearningProgressStatus() === ilLPStatus::LP_STATUS_IN_PROGRESS_NUM) {
                return true;
            }
        }

        return false;
    }

    public function getBlockType(): string
    {
        return 'pdlern';
    }

    public function confirmedRemove(array $ids): void
    {
        foreach ($ids as $ref_id) {
            if ($this->access->checkAccess('leave', '', $ref_id)) {
                if (ilObject::_lookupType($ref_id, true) === 'lso') {
                    $lso = ilObjLearningSequence::getInstanceByRefId($ref_id);
                    if ($lso instanceof ilObjLearningSequence) {
                        $lso->getLSRoles()->leave($this->user->getId());
                    }
                }

                ilForumNotification::checkForumsExistsDelete($ref_id, $this->user->getId());
            }
        }

        $this->main_tpl->setOnScreenMessage('success', $this->lng->txt('mmbr_unsubscribed_from_objs'), true);
        $this->ctrl->returnToParent($this);
    }

    public function removeMultipleEnabled(): bool
    {
        return true;
    }

    public function getRemoveMultipleActionText(): string
    {
        return $this->lng->txt('pd_unsubscribe_multiple_memberships');
    }
}