/**
* Check title rules
*
* @param Subject $subject
*
* @return ResultCollection
*/
public function check(Subject $subject) : ResultCollection
{
$resultCollection = new ResultCollection();
/**
* Check
*/
$contextDescription = $subject->getContextDescription();
$titleTags = $subject->getDom()->getElementsByTagName('title');
if ($titleTags->length === 0) {
$resultCollection->add(new Result($contextDescription, 'Title tag is missing'));
} else {
if ($titleTags->length === 1) {
if (strlen($titleTags->item(0)->nodeValue) > 55) {
$resultCollection->add(new Result($contextDescription, 'Title is longer than 55 characters'));
}
} else {
$resultCollection->add(new Result($contextDescription, 'There are more than one title tag'));
}
}
return $resultCollection;
}
/**
* Check image rules
*
* @param Subject $subject
*
* @return ResultCollection
*/
public function check(Subject $subject) : ResultCollection
{
$resultCollection = new ResultCollection();
/**
* Check
*/
$contextDescription = $subject->getContextDescription();
$imgTags = $subject->getDom()->getElementsByTagName('img');
/**
* @var \DOMElement $imgTag
*/
$missingAltAttributes = 0;
foreach ($imgTags as $imgTag) {
$altAttribute = $imgTag->attributes->getNamedItem('alt');
if (!$altAttribute || empty($altAttribute->nodeValue)) {
$missingAltAttributes++;
}
}
if ($missingAltAttributes > 0) {
$resultCollection->add(new Result($contextDescription, "{$missingAltAttributes} img tag is missing alt attribute"));
}
return $resultCollection;
}