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| 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2020 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\taoQtiItem\model\qti\parser; |
| 24 | |
| 25 | use oat\oatbox\service\ConfigurableService; |
| 26 | use oat\taoQtiItem\model\qti\Element; |
| 27 | use oat\taoQtiItem\model\qti\ElementReferences; |
| 28 | use oat\taoQtiItem\model\qti\Item; |
| 29 | use oat\taoQtiItem\model\qti\QtiObject; |
| 30 | use oat\taoQtiItem\model\qti\XInclude; |
| 31 | use oat\taoQtiItem\model\qti\Img; |
| 32 | |
| 33 | class ElementReferencesExtractor extends ConfigurableService |
| 34 | { |
| 35 | /** @var string[] */ |
| 36 | private $elementReferences; |
| 37 | |
| 38 | public function extract(Item $qtiItem, string $elementClass, string $attributeName): array |
| 39 | { |
| 40 | $this->elementReferences = []; |
| 41 | |
| 42 | /** @var Element $element */ |
| 43 | foreach ($qtiItem->getComposingElements($elementClass) as $element) { |
| 44 | $this->elementReferences[] = $element->attr($attributeName); |
| 45 | } |
| 46 | |
| 47 | return array_unique($this->elementReferences); |
| 48 | } |
| 49 | |
| 50 | public function extractAll(Item $qtiItem): ElementReferences |
| 51 | { |
| 52 | return new ElementReferences( |
| 53 | $this->extract($qtiItem, XInclude::class, 'href'), |
| 54 | $this->extract($qtiItem, QtiObject::class, 'data'), |
| 55 | $this->extract($qtiItem, Img::class, 'src') |
| 56 | ); |
| 57 | } |
| 58 | } |