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<?php
namespace Sabberworm\CSS\Rule;
use Sabberworm\CSS\Comment\Commentable;
use Sabberworm\CSS\Parsing\ParserState;
use Sabberworm\CSS\Renderable;
use Sabberworm\CSS\Value\RuleValueList;
use Sabberworm\CSS\Value\Value;
/**
* RuleSets contains Rule objects which always have a key and a value.
* In CSS, Rules are expressed as follows: “key: value[0][0] value[0][1], value[1][0] value[1][1];”
*/
class Rule implements Renderable, Commentable {
private $sRule;
private $mValue;
private $bIsImportant;
private $aIeHack;
protected $iLineNo;
protected $aComments;
public function __construct($sRule, $iLineNo = 0) {
$this->sRule = $sRule;
$this->mValue = null;
$this->bIsImportant = false;
$this->aIeHack = array();
$this->iLineNo = $iLineNo;
$this->aComments = array();
}
public static function parse(ParserState $oParserState) {
$aComments = $oParserState->consumeWhiteSpace();
$oRule = new Rule($oParserState->parseIdentifier(), $oParserState->currentLine());
$oRule->setComments($aComments);
$oRule->addComments($oParserState->consumeWhiteSpace());
$oParserState->consume(':');
$oValue = Value::parseValue($oParserState, self::listDelimiterForRule($oRule->getRule()));
$oRule->setValue($oValue);
if ($oParserState->getSettings()->bLenientParsing) {
while ($oParserState->comes('\\')) {
$oParserState->consume('\\');
$oRule->addIeHack($oParserState->consume());
$oParserState->consumeWhiteSpace();
}
}
$oParserState->consumeWhiteSpace();
if ($oParserState->comes('!')) {
$oParserState->consume('!');
$oParserState->consumeWhiteSpace();
$oParserState->consume('important');
$oRule->setIsImportant(true);
}
$oParserState->consumeWhiteSpace();
while ($oParserState->comes(';')) {
$oParserState->consume(';');
}
return $oRule;
}
private static function listDelimiterForRule($sRule) {
if (preg_match('/^font($|-)/', $sRule)) {
return array(',', '/', ' ');
}
return array(',', ' ', '/');
}
/**
* @return int
*/
public function getLineNo() {
return $this->iLineNo;
}
public function setRule($sRule) {
$this->sRule = $sRule;
}
public function getRule() {
return $this->sRule;
}
public function getValue() {
return $this->mValue;
}
public function setValue($mValue) {
$this->mValue = $mValue;
}
/**
* @deprecated Old-Style 2-dimensional array given. Retained for (some) backwards-compatibility. Use setValue() instead and wrapp the value inside a RuleValueList if necessary.
*/
public function setValues($aSpaceSeparatedValues) {
$oSpaceSeparatedList = null;
if (count($aSpaceSeparatedValues) > 1) {
$oSpaceSeparatedList = new RuleValueList(' ', $this->iLineNo);
}
foreach ($aSpaceSeparatedValues as $aCommaSeparatedValues) {
$oCommaSeparatedList = null;
if (count($aCommaSeparatedValues) > 1) {
$oCommaSeparatedList = new RuleValueList(',', $this->iLineNo);
}
foreach ($aCommaSeparatedValues as $mValue) {
if (!$oSpaceSeparatedList && !$oCommaSeparatedList) {
$this->mValue = $mValue;
return $mValue;
}
if ($oCommaSeparatedList) {
$oCommaSeparatedList->addListComponent($mValue);
} else {
$oSpaceSeparatedList->addListComponent($mValue);
}
}
if (!$oSpaceSeparatedList) {
$this->mValue = $oCommaSeparatedList;
return $oCommaSeparatedList;
} else {
$oSpaceSeparatedList->addListComponent($oCommaSeparatedList);
}
}
$this->mValue = $oSpaceSeparatedList;
return $oSpaceSeparatedList;
}
/**
* @deprecated Old-Style 2-dimensional array returned. Retained for (some) backwards-compatibility. Use getValue() instead and check for the existance of a (nested set of) ValueList object(s).
*/
public function getValues() {
if (!$this->mValue instanceof RuleValueList) {
return array(array($this->mValue));
}
if ($this->mValue->getListSeparator() === ',') {
return array($this->mValue->getListComponents());
}
$aResult = array();
foreach ($this->mValue->getListComponents() as $mValue) {
if (!$mValue instanceof RuleValueList || $mValue->getListSeparator() !== ',') {
$aResult[] = array($mValue);
continue;
}
if ($this->mValue->getListSeparator() === ' ' || count($aResult) === 0) {
$aResult[] = array();
}
foreach ($mValue->getListComponents() as $mValue) {
$aResult[count($aResult) - 1][] = $mValue;
}
}
return $aResult;
}
/**
* Adds a value to the existing value. Value will be appended if a RuleValueList exists of the given type. Otherwise, the existing value will be wrapped by one.
*/
public function addValue($mValue, $sType = ' ') {
if (!is_array($mValue)) {
$mValue = array($mValue);
}
if (!$this->mValue instanceof RuleValueList || $this->mValue->getListSeparator() !== $sType) {
$mCurrentValue = $this->mValue;
$this->mValue = new RuleValueList($sType, $this->iLineNo);
if ($mCurrentValue) {
$this->mValue->addListComponent($mCurrentValue);
}
}
foreach ($mValue as $mValueItem) {
$this->mValue->addListComponent($mValueItem);
}
}
public function addIeHack($iModifier) {
$this->aIeHack[] = $iModifier;
}
public function setIeHack(array $aModifiers) {
$this->aIeHack = $aModifiers;
}
public function getIeHack() {
return $this->aIeHack;
}
public function setIsImportant($bIsImportant) {
$this->bIsImportant = $bIsImportant;
}
public function getIsImportant() {
return $this->bIsImportant;
}
public function __toString() {
return $this->render(new \Sabberworm\CSS\OutputFormat());
}
public function render(\Sabberworm\CSS\OutputFormat $oOutputFormat) {
$sResult = "{$this->sRule}:{$oOutputFormat->spaceAfterRuleName()}";
if ($this->mValue instanceof Value) { //Can also be a ValueList
$sResult .= $this->mValue->render($oOutputFormat);
} else {
$sResult .= $this->mValue;
}
if (!empty($this->aIeHack)) {
$sResult .= ' \\' . implode('\\', $this->aIeHack);
}
if ($this->bIsImportant) {
$sResult .= ' !important';
}
$sResult .= ';';
return $sResult;
}
/**
* @param array $aComments Array of comments.
*/
public function addComments(array $aComments) {
$this->aComments = array_merge($this->aComments, $aComments);
}
/**
* @return array
*/
public function getComments() {
return $this->aComments;
}
/**
* @param array $aComments Array containing Comment objects.
*/
public function setComments(array $aComments) {
$this->aComments = $aComments;
}
}