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<?php |
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/* |
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* This file is part of the trefoil application. |
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* |
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* (c) Miguel Angel Gabriel <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Trefoil\Helpers; |
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use Symfony\Component\DomCrawler\Crawler; |
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use Trefoil\Util\CrawlerTools; |
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/** |
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* Parse an HTML representation of a questionnaire into a QuizQuestionnaire object. |
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* |
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* Example questionnaire: |
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* |
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* <div class="questions" data-id="1-1"> |
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* <h5>Optional heading</h5> |
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* <h6>Optional subheading</h6> |
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* <p>free text</p> |
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* <ul><li>can have unordered lists</li></ul> |
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* <p>more free text</p> |
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* |
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* [questionnaire questions] |
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* </div> |
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* |
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* Where [questionnaire questions]: |
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* |
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* <ol> |
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* <li><p>Text of question 1</p> |
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* ... whatever text and markup ... |
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* <h6>Solution heading (optional)</h6> |
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* <p>Solution text (optional)</p> |
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* ... whatever text and markup ... |
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* </li> |
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* <li><p>Text of question 2</p> |
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* ... |
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* </li> |
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* </ol> |
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*/ |
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class QuizQuestionnaireParser extends QuizItemParser |
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{ |
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/** |
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* @var QuizQuestionnaire |
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*/ |
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protected $quizQuestionnaire; |
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public function __construct($text) |
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{ |
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$this->quizQuestionnaire = new QuizQuestionnaire(); |
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parent::__construct($text, $this->quizQuestionnaire); |
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} |
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/** |
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* Example body: |
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* |
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* <ol> |
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* <li><p>Text of question 1</p> |
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* ... whatever text and markup ... |
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* <h6>Solution heading (optional)</h6> |
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* <p>Solution text (optional)</p> |
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* ... whatever text and markup ... |
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* </li> |
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* <li><p>Text of question 2</p> |
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* ... |
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* </li> |
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* </ol> |
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* |
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* @param Crawler $crawler pointing to "div" node of the quiz item |
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* |
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* @throws \RuntimeException |
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* @return array with questionnaire values |
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*/ |
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protected function parseBody(Crawler $crawler) |
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{ |
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// 'ol' node contains all the questions |
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$olNode = $crawler->filter('div>ol'); |
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if (0 == $olNode->count()) { |
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throw new \RuntimeException( |
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sprintf( |
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'No questions found for questionnaire id "%s"' . "\n" |
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. $this->quizQuestionnaire->getId() |
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)); |
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} |
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// collect questions |
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$questionsList = array(); |
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$qnodes = $olNode->children(); |
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// all the 1st level "li" nodes are questions |
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foreach ($qnodes as $qDomNode) { |
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$qnode = new Crawler($qDomNode); |
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$question = new QuizQuestionnaireQuestion(); |
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$qnodeNodes = $qnode->children(); |
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if (0 == $qnodeNodes->count()) { |
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// this "li" question node doesn't have anything in it except some text |
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$question->setText('<p>' . $qnode->text() . '</p>'); |
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} else { |
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// a normal question |
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foreach ($qnodeNodes as $qnodeDomNode) { |
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$qnodeNode = new Crawler($qnodeDomNode); |
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$nodeName = CrawlerTools::getNodeName($qnodeNode); |
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if ('h6' == $nodeName) { |
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// solution heading |
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$question->setSolution(''); |
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$question->setHeading($qnodeNode->text()); |
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} else { |
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// piece of question text or solution text |
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$piece = CrawlerTools::getNodeHtml($qnodeNode); |
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if ($question->getHeading()) { |
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// solution |
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$question->setSolution($question->getSolution() . $piece); |
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} else { |
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// question text |
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$question->setText($question->getText() . $piece); |
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} |
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} |
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} |
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} |
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$questionsList[] = $question; |
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} |
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$this->quizQuestionnaire->setQuestions($questionsList); |
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} |
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} |
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magabriel /
trefoil
