class.ilDclFileuploadFieldRepresentation.php

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<?php
require_once ('./Modules/DataCollection/classes/Fields/Base/class.ilDclBaseFieldRepresentation.php');

class ilDclFileuploadFieldRepresentation extends ilDclBaseFieldRepresentation {

        public function getInputField(ilPropertyFormGUI $form, $record_id = 0) {
                $input = new ilFileInputGUI($this->getField()->getTitle(), 'field_' . $this->getField()->getId());
                $input->setSuffixes($this->getField()->getSupportedExtensions());
                $input->setAllowDeletion(true);

                $this->requiredWorkaroundForInputField($input, $record_id);

                return $input;
        }

        protected function requiredWorkaroundForInputField($input, $record_id) {
                if ($record_id) {
                        $record = ilDclCache::getRecordCache($record_id);
                }

                $this->setupInputField($input, $this->getField());

                //WORKAROUND
                // If field is from type file: if it's required but already has a value it is no longer required as the old value is taken as default without the form knowing about it.
                if ($record_id && $record->getId()) {
                        $field_value = $record->getRecordFieldValue($this->getField()->getId());
                        if ($field_value) {
                                $input->setRequired(false);
                        }
                }
                // If this is an ajax request to return the form, input files are currently not supported
                if ($this->ctrl->isAsynch()) {
                        $input->setDisabled(true);
                }
        }


        public function addFilterInputFieldToTable(ilTable2GUI $table) {
                $input = $table->addFilterItemByMetaType("filter_" . $this->getField()->getId(), ilTable2GUI::FILTER_TEXT, false, $this->getField()->getId());
                $input->setSubmitFormOnEnter(true);

                $this->setupFilterInputField($input);

                return $this->getFilterInputFieldValue($input);
        }


        public function passThroughFilter(ilDclBaseRecordModel $record, $filter) {
                $value = $record->getRecordFieldValue($this->getField()->getId());
                $pass = false;
                if (!ilObject2::_exists($value) || ilObject2::_lookupType($value, false) != "file") {
                        $pass = true;
                }

                $file_obj = new ilObjFile($value, false);
                $file_name = $file_obj->getTitle();
                if (!$filter || strpos(strtolower($file_name), strtolower($filter)) !== false) {
                        $pass = true;
                }

                return $pass;
        }

        public function buildFieldCreationInput(ilObjDataCollection $dcl, $mode = 'create') {
                $opt = parent::buildFieldCreationInput($dcl, $mode);

                $prop_filetype = new ilTextInputGUI($this->lng->txt('dcl_supported_filetypes'), 'prop_'.ilDclBaseFieldModel::PROP_SUPPORTED_FILE_TYPES);
                $prop_filetype->setInfo($this->lng->txt('dcl_supported_filetypes_desc'));

                $opt->addSubItem($prop_filetype);

                return $opt;
        }
}