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Diffstat (limited to '')
| -rw-r--r-- | library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/RuleSet/DeclarationBlock.php | 831 |
1 files changed, 831 insertions, 0 deletions
diff --git a/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/RuleSet/DeclarationBlock.php b/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/RuleSet/DeclarationBlock.php new file mode 100644 index 0000000..c27cdd4 --- /dev/null +++ b/library/vendor/dompdf/vendor/sabberworm/php-css-parser/src/RuleSet/DeclarationBlock.php @@ -0,0 +1,831 @@ +<?php + +namespace Sabberworm\CSS\RuleSet; + +use Sabberworm\CSS\CSSList\CSSList; +use Sabberworm\CSS\CSSList\KeyFrame; +use Sabberworm\CSS\OutputFormat; +use Sabberworm\CSS\Parsing\OutputException; +use Sabberworm\CSS\Parsing\ParserState; +use Sabberworm\CSS\Parsing\UnexpectedEOFException; +use Sabberworm\CSS\Parsing\UnexpectedTokenException; +use Sabberworm\CSS\Property\KeyframeSelector; +use Sabberworm\CSS\Property\Selector; +use Sabberworm\CSS\Rule\Rule; +use Sabberworm\CSS\Value\Color; +use Sabberworm\CSS\Value\RuleValueList; +use Sabberworm\CSS\Value\Size; +use Sabberworm\CSS\Value\URL; +use Sabberworm\CSS\Value\Value; + +/** + * Declaration blocks are the parts of a CSS file which denote the rules belonging to a selector. + * + * Declaration blocks usually appear directly inside a `Document` or another `CSSList` (mostly a `MediaQuery`). + */ +class DeclarationBlock extends RuleSet +{ + /** + * @var array<int, Selector|string> + */ + private $aSelectors; + + /** + * @param int $iLineNo + */ + public function __construct($iLineNo = 0) + { + parent::__construct($iLineNo); + $this->aSelectors = []; + } + + /** + * @param CSSList|null $oList + * + * @return DeclarationBlock|false + * + * @throws UnexpectedTokenException + * @throws UnexpectedEOFException + */ + public static function parse(ParserState $oParserState, $oList = null) + { + $aComments = []; + $oResult = new DeclarationBlock($oParserState->currentLine()); + try { + $aSelectorParts = []; + $sStringWrapperChar = false; + do { + $aSelectorParts[] = $oParserState->consume(1) + . $oParserState->consumeUntil(['{', '}', '\'', '"'], false, false, $aComments); + if (in_array($oParserState->peek(), ['\'', '"']) && substr(end($aSelectorParts), -1) != "\\") { + if ($sStringWrapperChar === false) { + $sStringWrapperChar = $oParserState->peek(); + } elseif ($sStringWrapperChar == $oParserState->peek()) { + $sStringWrapperChar = false; + } + } + } while (!in_array($oParserState->peek(), ['{', '}']) || $sStringWrapperChar !== false); + $oResult->setSelectors(implode('', $aSelectorParts), $oList); + if ($oParserState->comes('{')) { + $oParserState->consume(1); + } + } catch (UnexpectedTokenException $e) { + if ($oParserState->getSettings()->bLenientParsing) { + if (!$oParserState->comes('}')) { + $oParserState->consumeUntil('}', false, true); + } + return false; + } else { + throw $e; + } + } + $oResult->setComments($aComments); + RuleSet::parseRuleSet($oParserState, $oResult); + return $oResult; + } + + /** + * @param array<int, Selector|string>|string $mSelector + * @param CSSList|null $oList + * + * @throws UnexpectedTokenException + */ + public function setSelectors($mSelector, $oList = null) + { + if (is_array($mSelector)) { + $this->aSelectors = $mSelector; + } else { + $this->aSelectors = explode(',', $mSelector); + } + foreach ($this->aSelectors as $iKey => $mSelector) { + if (!($mSelector instanceof Selector)) { + if ($oList === null || !($oList instanceof KeyFrame)) { + if (!Selector::isValid($mSelector)) { + throw new UnexpectedTokenException( + "Selector did not match '" . Selector::SELECTOR_VALIDATION_RX . "'.", + $mSelector, + "custom" + ); + } + $this->aSelectors[$iKey] = new Selector($mSelector); + } else { + if (!KeyframeSelector::isValid($mSelector)) { + throw new UnexpectedTokenException( + "Selector did not match '" . KeyframeSelector::SELECTOR_VALIDATION_RX . "'.", + $mSelector, + "custom" + ); + } + $this->aSelectors[$iKey] = new KeyframeSelector($mSelector); + } + } + } + } + + /** + * Remove one of the selectors of the block. + * + * @param Selector|string $mSelector + * + * @return bool + */ + public function removeSelector($mSelector) + { + if ($mSelector instanceof Selector) { + $mSelector = $mSelector->getSelector(); + } + foreach ($this->aSelectors as $iKey => $oSelector) { + if ($oSelector->getSelector() === $mSelector) { + unset($this->aSelectors[$iKey]); + return true; + } + } + return false; + } + + /** + * @return array<int, Selector|string> + * + * @deprecated will be removed in version 9.0; use `getSelectors()` instead + */ + public function getSelector() + { + return $this->getSelectors(); + } + + /** + * @param Selector|string $mSelector + * @param CSSList|null $oList + * + * @return void + * + * @deprecated will be removed in version 9.0; use `setSelectors()` instead + */ + public function setSelector($mSelector, $oList = null) + { + $this->setSelectors($mSelector, $oList); + } + + /** + * @return array<int, Selector|string> + */ + public function getSelectors() + { + return $this->aSelectors; + } + + /** + * Splits shorthand declarations (e.g. `margin` or `font`) into their constituent parts. + * + * @return void + */ + public function expandShorthands() + { + // border must be expanded before dimensions + $this->expandBorderShorthand(); + $this->expandDimensionsShorthand(); + $this->expandFontShorthand(); + $this->expandBackgroundShorthand(); + $this->expandListStyleShorthand(); + } + + /** + * Creates shorthand declarations (e.g. `margin` or `font`) whenever possible. + * + * @return void + */ + public function createShorthands() + { + $this->createBackgroundShorthand(); + $this->createDimensionsShorthand(); + // border must be shortened after dimensions + $this->createBorderShorthand(); + $this->createFontShorthand(); + $this->createListStyleShorthand(); + } + + /** + * Splits shorthand border declarations (e.g. `border: 1px red;`). + * + * Additional splitting happens in expandDimensionsShorthand. + * + * Multiple borders are not yet supported as of 3. + * + * @return void + */ + public function expandBorderShorthand() + { + $aBorderRules = [ + 'border', + 'border-left', + 'border-right', + 'border-top', + 'border-bottom', + ]; + $aBorderSizes = [ + 'thin', + 'medium', + 'thick', + ]; + $aRules = $this->getRulesAssoc(); + foreach ($aBorderRules as $sBorderRule) { + if (!isset($aRules[$sBorderRule])) { + continue; + } + $oRule = $aRules[$sBorderRule]; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + foreach ($aValues as $mValue) { + if ($mValue instanceof Value) { + $mNewValue = clone $mValue; + } else { + $mNewValue = $mValue; + } + if ($mValue instanceof Size) { + $sNewRuleName = $sBorderRule . "-width"; + } elseif ($mValue instanceof Color) { + $sNewRuleName = $sBorderRule . "-color"; + } else { + if (in_array($mValue, $aBorderSizes)) { + $sNewRuleName = $sBorderRule . "-width"; + } else { + $sNewRuleName = $sBorderRule . "-style"; + } + } + $oNewRule = new Rule($sNewRuleName, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $oNewRule->addValue([$mNewValue]); + $this->addRule($oNewRule); + } + $this->removeRule($sBorderRule); + } + } + + /** + * Splits shorthand dimensional declarations (e.g. `margin: 0px auto;`) + * into their constituent parts. + * + * Handles `margin`, `padding`, `border-color`, `border-style` and `border-width`. + * + * @return void + */ + public function expandDimensionsShorthand() + { + $aExpansions = [ + 'margin' => 'margin-%s', + 'padding' => 'padding-%s', + 'border-color' => 'border-%s-color', + 'border-style' => 'border-%s-style', + 'border-width' => 'border-%s-width', + ]; + $aRules = $this->getRulesAssoc(); + foreach ($aExpansions as $sProperty => $sExpanded) { + if (!isset($aRules[$sProperty])) { + continue; + } + $oRule = $aRules[$sProperty]; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + $top = $right = $bottom = $left = null; + switch (count($aValues)) { + case 1: + $top = $right = $bottom = $left = $aValues[0]; + break; + case 2: + $top = $bottom = $aValues[0]; + $left = $right = $aValues[1]; + break; + case 3: + $top = $aValues[0]; + $left = $right = $aValues[1]; + $bottom = $aValues[2]; + break; + case 4: + $top = $aValues[0]; + $right = $aValues[1]; + $bottom = $aValues[2]; + $left = $aValues[3]; + break; + } + foreach (['top', 'right', 'bottom', 'left'] as $sPosition) { + $oNewRule = new Rule(sprintf($sExpanded, $sPosition), $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $oNewRule->addValue(${$sPosition}); + $this->addRule($oNewRule); + } + $this->removeRule($sProperty); + } + } + + /** + * Converts shorthand font declarations + * (e.g. `font: 300 italic 11px/14px verdana, helvetica, sans-serif;`) + * into their constituent parts. + * + * @return void + */ + public function expandFontShorthand() + { + $aRules = $this->getRulesAssoc(); + if (!isset($aRules['font'])) { + return; + } + $oRule = $aRules['font']; + // reset properties to 'normal' per http://www.w3.org/TR/21/fonts.html#font-shorthand + $aFontProperties = [ + 'font-style' => 'normal', + 'font-variant' => 'normal', + 'font-weight' => 'normal', + 'font-size' => 'normal', + 'line-height' => 'normal', + ]; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + foreach ($aValues as $mValue) { + if (!$mValue instanceof Value) { + $mValue = mb_strtolower($mValue); + } + if (in_array($mValue, ['normal', 'inherit'])) { + foreach (['font-style', 'font-weight', 'font-variant'] as $sProperty) { + if (!isset($aFontProperties[$sProperty])) { + $aFontProperties[$sProperty] = $mValue; + } + } + } elseif (in_array($mValue, ['italic', 'oblique'])) { + $aFontProperties['font-style'] = $mValue; + } elseif ($mValue == 'small-caps') { + $aFontProperties['font-variant'] = $mValue; + } elseif ( + in_array($mValue, ['bold', 'bolder', 'lighter']) + || ($mValue instanceof Size + && in_array($mValue->getSize(), range(100, 900, 100))) + ) { + $aFontProperties['font-weight'] = $mValue; + } elseif ($mValue instanceof RuleValueList && $mValue->getListSeparator() == '/') { + list($oSize, $oHeight) = $mValue->getListComponents(); + $aFontProperties['font-size'] = $oSize; + $aFontProperties['line-height'] = $oHeight; + } elseif ($mValue instanceof Size && $mValue->getUnit() !== null) { + $aFontProperties['font-size'] = $mValue; + } else { + $aFontProperties['font-family'] = $mValue; + } + } + foreach ($aFontProperties as $sProperty => $mValue) { + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->addValue($mValue); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $this->addRule($oNewRule); + } + $this->removeRule('font'); + } + + /** + * Converts shorthand background declarations + * (e.g. `background: url("chess.png") gray 50% repeat fixed;`) + * into their constituent parts. + * + * @see http://www.w3.org/TR/21/colors.html#propdef-background + * + * @return void + */ + public function expandBackgroundShorthand() + { + $aRules = $this->getRulesAssoc(); + if (!isset($aRules['background'])) { + return; + } + $oRule = $aRules['background']; + $aBgProperties = [ + 'background-color' => ['transparent'], + 'background-image' => ['none'], + 'background-repeat' => ['repeat'], + 'background-attachment' => ['scroll'], + 'background-position' => [ + new Size(0, '%', null, false, $this->iLineNo), + new Size(0, '%', null, false, $this->iLineNo), + ], + ]; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + if (count($aValues) == 1 && $aValues[0] == 'inherit') { + foreach ($aBgProperties as $sProperty => $mValue) { + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->addValue('inherit'); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $this->addRule($oNewRule); + } + $this->removeRule('background'); + return; + } + $iNumBgPos = 0; + foreach ($aValues as $mValue) { + if (!$mValue instanceof Value) { + $mValue = mb_strtolower($mValue); + } + if ($mValue instanceof URL) { + $aBgProperties['background-image'] = $mValue; + } elseif ($mValue instanceof Color) { + $aBgProperties['background-color'] = $mValue; + } elseif (in_array($mValue, ['scroll', 'fixed'])) { + $aBgProperties['background-attachment'] = $mValue; + } elseif (in_array($mValue, ['repeat', 'no-repeat', 'repeat-x', 'repeat-y'])) { + $aBgProperties['background-repeat'] = $mValue; + } elseif ( + in_array($mValue, ['left', 'center', 'right', 'top', 'bottom']) + || $mValue instanceof Size + ) { + if ($iNumBgPos == 0) { + $aBgProperties['background-position'][0] = $mValue; + $aBgProperties['background-position'][1] = 'center'; + } else { + $aBgProperties['background-position'][$iNumBgPos] = $mValue; + } + $iNumBgPos++; + } + } + foreach ($aBgProperties as $sProperty => $mValue) { + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $oNewRule->addValue($mValue); + $this->addRule($oNewRule); + } + $this->removeRule('background'); + } + + /** + * @return void + */ + public function expandListStyleShorthand() + { + $aListProperties = [ + 'list-style-type' => 'disc', + 'list-style-position' => 'outside', + 'list-style-image' => 'none', + ]; + $aListStyleTypes = [ + 'none', + 'disc', + 'circle', + 'square', + 'decimal-leading-zero', + 'decimal', + 'lower-roman', + 'upper-roman', + 'lower-greek', + 'lower-alpha', + 'lower-latin', + 'upper-alpha', + 'upper-latin', + 'hebrew', + 'armenian', + 'georgian', + 'cjk-ideographic', + 'hiragana', + 'hira-gana-iroha', + 'katakana-iroha', + 'katakana', + ]; + $aListStylePositions = [ + 'inside', + 'outside', + ]; + $aRules = $this->getRulesAssoc(); + if (!isset($aRules['list-style'])) { + return; + } + $oRule = $aRules['list-style']; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + if (count($aValues) == 1 && $aValues[0] == 'inherit') { + foreach ($aListProperties as $sProperty => $mValue) { + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->addValue('inherit'); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $this->addRule($oNewRule); + } + $this->removeRule('list-style'); + return; + } + foreach ($aValues as $mValue) { + if (!$mValue instanceof Value) { + $mValue = mb_strtolower($mValue); + } + if ($mValue instanceof Url) { + $aListProperties['list-style-image'] = $mValue; + } elseif (in_array($mValue, $aListStyleTypes)) { + $aListProperties['list-style-types'] = $mValue; + } elseif (in_array($mValue, $aListStylePositions)) { + $aListProperties['list-style-position'] = $mValue; + } + } + foreach ($aListProperties as $sProperty => $mValue) { + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + $oNewRule->setIsImportant($oRule->getIsImportant()); + $oNewRule->addValue($mValue); + $this->addRule($oNewRule); + } + $this->removeRule('list-style'); + } + + /** + * @param array<array-key, string> $aProperties + * @param string $sShorthand + * + * @return void + */ + public function createShorthandProperties(array $aProperties, $sShorthand) + { + $aRules = $this->getRulesAssoc(); + $aNewValues = []; + foreach ($aProperties as $sProperty) { + if (!isset($aRules[$sProperty])) { + continue; + } + $oRule = $aRules[$sProperty]; + if (!$oRule->getIsImportant()) { + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + foreach ($aValues as $mValue) { + $aNewValues[] = $mValue; + } + $this->removeRule($sProperty); + } + } + if (count($aNewValues)) { + $oNewRule = new Rule($sShorthand, $oRule->getLineNo(), $oRule->getColNo()); + foreach ($aNewValues as $mValue) { + $oNewRule->addValue($mValue); + } + $this->addRule($oNewRule); + } + } + + /** + * @return void + */ + public function createBackgroundShorthand() + { + $aProperties = [ + 'background-color', + 'background-image', + 'background-repeat', + 'background-position', + 'background-attachment', + ]; + $this->createShorthandProperties($aProperties, 'background'); + } + + /** + * @return void + */ + public function createListStyleShorthand() + { + $aProperties = [ + 'list-style-type', + 'list-style-position', + 'list-style-image', + ]; + $this->createShorthandProperties($aProperties, 'list-style'); + } + + /** + * Combines `border-color`, `border-style` and `border-width` into `border`. + * + * Should be run after `create_dimensions_shorthand`! + * + * @return void + */ + public function createBorderShorthand() + { + $aProperties = [ + 'border-width', + 'border-style', + 'border-color', + ]; + $this->createShorthandProperties($aProperties, 'border'); + } + + /** + * Looks for long format CSS dimensional properties + * (margin, padding, border-color, border-style and border-width) + * and converts them into shorthand CSS properties. + * + * @return void + */ + public function createDimensionsShorthand() + { + $aPositions = ['top', 'right', 'bottom', 'left']; + $aExpansions = [ + 'margin' => 'margin-%s', + 'padding' => 'padding-%s', + 'border-color' => 'border-%s-color', + 'border-style' => 'border-%s-style', + 'border-width' => 'border-%s-width', + ]; + $aRules = $this->getRulesAssoc(); + foreach ($aExpansions as $sProperty => $sExpanded) { + $aFoldable = []; + foreach ($aRules as $sRuleName => $oRule) { + foreach ($aPositions as $sPosition) { + if ($sRuleName == sprintf($sExpanded, $sPosition)) { + $aFoldable[$sRuleName] = $oRule; + } + } + } + // All four dimensions must be present + if (count($aFoldable) == 4) { + $aValues = []; + foreach ($aPositions as $sPosition) { + $oRule = $aRules[sprintf($sExpanded, $sPosition)]; + $mRuleValue = $oRule->getValue(); + $aRuleValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aRuleValues[] = $mRuleValue; + } else { + $aRuleValues = $mRuleValue->getListComponents(); + } + $aValues[$sPosition] = $aRuleValues; + } + $oNewRule = new Rule($sProperty, $oRule->getLineNo(), $oRule->getColNo()); + if ((string)$aValues['left'][0] == (string)$aValues['right'][0]) { + if ((string)$aValues['top'][0] == (string)$aValues['bottom'][0]) { + if ((string)$aValues['top'][0] == (string)$aValues['left'][0]) { + // All 4 sides are equal + $oNewRule->addValue($aValues['top']); + } else { + // Top and bottom are equal, left and right are equal + $oNewRule->addValue($aValues['top']); + $oNewRule->addValue($aValues['left']); + } + } else { + // Only left and right are equal + $oNewRule->addValue($aValues['top']); + $oNewRule->addValue($aValues['left']); + $oNewRule->addValue($aValues['bottom']); + } + } else { + // No sides are equal + $oNewRule->addValue($aValues['top']); + $oNewRule->addValue($aValues['left']); + $oNewRule->addValue($aValues['bottom']); + $oNewRule->addValue($aValues['right']); + } + $this->addRule($oNewRule); + foreach ($aPositions as $sPosition) { + $this->removeRule(sprintf($sExpanded, $sPosition)); + } + } + } + } + + /** + * Looks for long format CSS font properties (e.g. `font-weight`) and + * tries to convert them into a shorthand CSS `font` property. + * + * At least `font-size` AND `font-family` must be present in order to create a shorthand declaration. + * + * @return void + */ + public function createFontShorthand() + { + $aFontProperties = [ + 'font-style', + 'font-variant', + 'font-weight', + 'font-size', + 'line-height', + 'font-family', + ]; + $aRules = $this->getRulesAssoc(); + if (!isset($aRules['font-size']) || !isset($aRules['font-family'])) { + return; + } + $oOldRule = isset($aRules['font-size']) ? $aRules['font-size'] : $aRules['font-family']; + $oNewRule = new Rule('font', $oOldRule->getLineNo(), $oOldRule->getColNo()); + unset($oOldRule); + foreach (['font-style', 'font-variant', 'font-weight'] as $sProperty) { + if (isset($aRules[$sProperty])) { + $oRule = $aRules[$sProperty]; + $mRuleValue = $oRule->getValue(); + $aValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aValues[] = $mRuleValue; + } else { + $aValues = $mRuleValue->getListComponents(); + } + if ($aValues[0] !== 'normal') { + $oNewRule->addValue($aValues[0]); + } + } + } + // Get the font-size value + $oRule = $aRules['font-size']; + $mRuleValue = $oRule->getValue(); + $aFSValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aFSValues[] = $mRuleValue; + } else { + $aFSValues = $mRuleValue->getListComponents(); + } + // But wait to know if we have line-height to add it + if (isset($aRules['line-height'])) { + $oRule = $aRules['line-height']; + $mRuleValue = $oRule->getValue(); + $aLHValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aLHValues[] = $mRuleValue; + } else { + $aLHValues = $mRuleValue->getListComponents(); + } + if ($aLHValues[0] !== 'normal') { + $val = new RuleValueList('/', $this->iLineNo); + $val->addListComponent($aFSValues[0]); + $val->addListComponent($aLHValues[0]); + $oNewRule->addValue($val); + } + } else { + $oNewRule->addValue($aFSValues[0]); + } + $oRule = $aRules['font-family']; + $mRuleValue = $oRule->getValue(); + $aFFValues = []; + if (!$mRuleValue instanceof RuleValueList) { + $aFFValues[] = $mRuleValue; + } else { + $aFFValues = $mRuleValue->getListComponents(); + } + $oFFValue = new RuleValueList(',', $this->iLineNo); + $oFFValue->setListComponents($aFFValues); + $oNewRule->addValue($oFFValue); + + $this->addRule($oNewRule); + foreach ($aFontProperties as $sProperty) { + $this->removeRule($sProperty); + } + } + + /** + * @return string + * + * @throws OutputException + */ + public function __toString() + { + return $this->render(new OutputFormat()); + } + + /** + * @return string + * + * @throws OutputException + */ + public function render(OutputFormat $oOutputFormat) + { + if (count($this->aSelectors) === 0) { + // If all the selectors have been removed, this declaration block becomes invalid + throw new OutputException("Attempt to print declaration block with missing selector", $this->iLineNo); + } + $sResult = $oOutputFormat->sBeforeDeclarationBlock; + $sResult .= $oOutputFormat->implode( + $oOutputFormat->spaceBeforeSelectorSeparator() . ',' . $oOutputFormat->spaceAfterSelectorSeparator(), + $this->aSelectors + ); + $sResult .= $oOutputFormat->sAfterDeclarationBlockSelectors; + $sResult .= $oOutputFormat->spaceBeforeOpeningBrace() . '{'; + $sResult .= parent::render($oOutputFormat); + $sResult .= '}'; + $sResult .= $oOutputFormat->sAfterDeclarationBlock; + return $sResult; + } +} |