/**
* Checks the value.
*
* @param string $value
* @return bool
*/
public function checkValue(&$value)
{
if (parent::checkValue($value)) {
$value = trim($value, " \r\n\t\f;");
// Check if declaration contains "!important"
if (strpos($value, "!") !== false) {
$charset = $this->getStyleSheet()->getCharset();
if (mb_strtolower(mb_substr($value, -10, null, $charset), $charset) === "!important") {
$this->setIsImportant(true);
$value = rtrim(mb_substr($value, 0, -10, $charset));
}
}
// Optimize the value
$value = Optimizer::optimizeDeclarationValue($value);
return true;
}
return false;
}
/**
* Checks the declaration value.
*
* @param string $value
* @return bool
*/
public function checkValue(&$value)
{
if (parent::checkValue($value)) {
$value = trim($value, " \r\n\t\f;");
// Check if declaration contains "!important"
if (strpos($value, "!") !== false) {
$charset = $this->getStyleSheet()->getCharset();
if (mb_strtolower(mb_substr($value, -10, null, $charset), $charset) === "!important") {
// Invalidate declaration, because "!important" isn't allowed and the declaration should be ignored
// @see: https://developer.mozilla.org/en-US/docs/Web/CSS/@keyframes#!important_in_a_keyframe
$this->setIsValid(false);
$this->addValidationError("Invalid value '{$value}' for @keyframes declaration. '!important' not allowed.");
}
}
// Optimize the value
$value = Optimizer::optimizeDeclarationValue($value);
return true;
}
return false;
}
