class.ilAppointmentPresentationExerciseGUI.php

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<?php

declare(strict_types=1);

class ilAppointmentPresentationExerciseGUI extends ilAppointmentPresentationGUI implements ilCalendarAppointmentPresentation
{
    public function collectPropertiesAndActions(): void
    {
        global $DIC;

        $this->lng->loadLanguageModule("exc");

        $f = $DIC->ui()->factory();
        $r = $DIC->ui()->renderer();

        $a_app = $this->appointment;
        $exc_obj = new ilObjExercise($this->getObjIdForAppointment(), false);
        //is this safe?

        $refs = $this->getReadableRefIds($this->getObjIdForAppointment());
        $exc_ref = current($refs);

        // common section: title, location, parent info
        $this->addCommonSection($a_app, $this->getObjIdForAppointment(), null, true);

        //Assignment title information
        $this->addInfoSection($this->lng->txt("cal_exc_info"));

        //var_dump($a_app); exit;
        $ass_id = $a_app["event"]->getContextId() / 10;            // see ilExAssignment->handleCalendarEntries $dl parameter

        $assignment = new ilExAssignment($ass_id);
        $state = ilExcAssMemberState::getInstanceByIds($assignment->getId(), $this->user->getId());
        if ($state->areInstructionsVisible()) {
            $assignment_instructions = trim($assignment->getInstruction());
            if ($assignment_instructions != "") {
                #21517
                $is_html = (strlen($assignment_instructions) != strlen(strip_tags($assignment_instructions)));
                if (!$is_html) {
                    $assignment_instructions = nl2br($assignment_instructions);
                }
                $this->addInfoProperty($this->lng->txt("exc_instruction"), $assignment_instructions);
            }
            $files = $assignment->getFiles();
            if (count($files) > 0) {
                $this->has_files = true;
                $str_files = array();
                foreach ($files as $file) {
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "ref_id", $exc_ref);
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "file", urlencode($file["name"]));
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "ass_id", $ass_id);
                    $url = $this->ctrl->getLinkTargetByClass(array("ilExerciseHandlerGUI",
                                                                   "ilobjexercisegui",
                                                                   "ilexsubmissiongui"
                    ), "downloadFile");
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "ass_id", "");
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "file", "");
                    $this->ctrl->setParameterByClass("ilexsubmissiongui", "ref_if", "");
                    $str_files[$file["name"]] = $r->render($f->button()->shy($file["name"], $url));
                }
                ksort($str_files, SORT_NATURAL | SORT_FLAG_CASE);
                $str_files = implode("<br>", $str_files);
                $this->addInfoProperty($this->lng->txt("exc_instruction_files"), $str_files);
                $this->addListItemProperty(
                    $this->lng->txt("exc_instruction_files"),
                    str_replace("<br>", ", ", $str_files)
                );
            }
        }

        //pass mode
        if ($assignment->getMandatory()) {
            $this->addInfoProperty($this->lng->txt("exc_mandatory"), $this->lng->txt("yes"));
            $this->addListItemProperty($this->lng->txt("exc_mandatory"), $this->lng->txt("yes"));
        } else {
            $this->addInfoProperty($this->lng->txt("exc_mandatory"), $this->lng->txt("no"));
            $this->addListItemProperty($this->lng->txt("exc_mandatory"), $this->lng->txt("no"));
        }

        // last edited
        $this->addLastUpdate($a_app);

        //go to the exercise.
        $this->addAction(
            $this->lng->txt("cal_exc_open"),
            "goto.php?target=exc_" . $exc_ref . "_" . $ass_id . "&client_id=" . CLIENT_ID
        );
    }

    protected function buildDirectLinkForAppointment(int $a_ref_id, ?array $a_appointment = null): string
    {
        $ass_id = 0;
        if (is_array($a_appointment)) {
            $ass_id = $a_appointment["event"]->getContextId() / 10;
        }
        if (!$ass_id) {
            return parent::buildDirectLinkForAppointment($a_ref_id, $a_appointment);
        }
        return ilLink::_getLink(
            $a_ref_id,
            'exc',
            [],
            '_' . $ass_id
        );
    }
}