/**
* @param string|null $ruleString
* @param StyleSheet $styleSheet
*/
public function __construct($ruleString = null, StyleSheet $styleSheet = null)
{
if ($styleSheet !== null) {
$this->setStyleSheet($styleSheet);
}
if ($ruleString !== null) {
$ruleString = Placeholder::replaceStringsAndComments($ruleString);
$this->parseRuleString($ruleString);
}
}
/**
* @param string $keyframeList
* @param StyleSheet $styleSheet
*/
public function __construct($keyframeList = "", StyleSheet $styleSheet = null)
{
if ($styleSheet !== null) {
$this->setStyleSheet($styleSheet);
}
if ($keyframeList !== "") {
$keyframeList = Placeholder::replaceStringsAndComments($keyframeList);
$this->parseKeyframeList($keyframeList);
}
}
/**
* Checks the selector value.
*
* @param $value
* @return bool
*/
public function checkValue(&$value)
{
if (is_string($value)) {
$value = Placeholder::replaceStringsAndComments($value);
$value = Placeholder::removeCommentPlaceholders($value, true);
$value = preg_replace('/[ ]+/', ' ', $value);
$value = Placeholder::replaceStringPlaceholders($value, true);
return true;
} else {
throw new \InvalidArgumentException("Invalid type '" . gettype($value) . "' for argument 'value' given.");
}
}
/**
* Gets a prepared version of the CSS content for parsing.
*
* @return string
*/
protected function getPreparedCssContent()
{
if ($this->preparedContent === null) {
$this->preparedContent = Placeholder::replaceStringsAndComments($this->getCssContent());
// Move comments from the end of the line to the beginning to make it easier to
// detect, to which rule they belong to
$this->preparedContent = preg_replace('/^([^\\r\\n]+)(_COMMENT_[a-f0-9]{32}_)([\\r\\n\\t\\f]+)/m', "\\2\n\\1\\3", $this->preparedContent);
// Remove white space characters before comments
$this->preparedContent = preg_replace('/^([ \\t\\f]*)(_COMMENT_[a-f0-9]{32}_)/m', "\\2\n", $this->preparedContent);
// Very important: Split long lines, because parsing long lines (char by char) costs a lot performance
// (several thousand percent...).
$this->preparedContent = str_replace(["{", "}", ";"], ["{\n", "}\n", ";\n"], $this->preparedContent);
}
return $this->preparedContent;
}
/**
* Checks the declaration value.
*
* @param string $value
* @return bool
*/
public function checkValue(&$value)
{
if (is_string($value)) {
$value = Placeholder::replaceStringsAndComments($value);
$value = Placeholder::removeCommentPlaceholders($value, true);
$value = Placeholder::replaceStringPlaceholders($value, true);
$value = trim($value);
if ($value !== '') {
return true;
} else {
$this->setIsValid(false);
}
} else {
throw new \InvalidArgumentException("Invalid type '" . gettype($value) . "' for argument 'value' given.");
}
}
