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608 lines
19 KiB
608 lines
19 KiB
<?php
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namespace Sabberworm\CSS\RuleSet;
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use Sabberworm\CSS\Property\Selector;
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use Sabberworm\CSS\Rule\Rule;
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use Sabberworm\CSS\Value\RuleValueList;
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use Sabberworm\CSS\Value\Value;
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use Sabberworm\CSS\Value\Size;
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use Sabberworm\CSS\Value\Color;
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use Sabberworm\CSS\Value\URL;
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use Sabberworm\CSS\Parsing\OutputException;
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/**
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* Declaration blocks are the parts of a css file which denote the rules belonging to a selector.
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* Declaration blocks usually appear directly inside a Document or another CSSList (mostly a MediaQuery).
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*/
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class DeclarationBlock extends RuleSet {
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private $aSelectors;
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public function __construct($iLineNo = 0) {
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parent::__construct($iLineNo);
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$this->aSelectors = array();
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}
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public function setSelectors($mSelector) {
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if (is_array($mSelector)) {
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$this->aSelectors = $mSelector;
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} else {
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$this->aSelectors = explode(',', $mSelector);
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}
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foreach ($this->aSelectors as $iKey => $mSelector) {
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if (!($mSelector instanceof Selector)) {
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$this->aSelectors[$iKey] = new Selector($mSelector);
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}
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}
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}
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// remove one of the selector of the block
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public function removeSelector($mSelector) {
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if($mSelector instanceof Selector) {
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$mSelector = $mSelector->getSelector();
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}
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foreach($this->aSelectors as $iKey => $oSelector) {
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if($oSelector->getSelector() === $mSelector) {
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unset($this->aSelectors[$iKey]);
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return true;
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}
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}
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return false;
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}
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/**
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* @deprecated use getSelectors()
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*/
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public function getSelector() {
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return $this->getSelectors();
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}
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/**
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* @deprecated use setSelectors()
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*/
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public function setSelector($mSelector) {
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$this->setSelectors($mSelector);
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}
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public function getSelectors() {
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return $this->aSelectors;
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}
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/**
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* Split shorthand declarations (e.g. +margin+ or +font+) into their constituent parts.
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* */
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public function expandShorthands() {
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// border must be expanded before dimensions
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$this->expandBorderShorthand();
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$this->expandDimensionsShorthand();
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$this->expandFontShorthand();
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$this->expandBackgroundShorthand();
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$this->expandListStyleShorthand();
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}
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/**
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* Create shorthand declarations (e.g. +margin+ or +font+) whenever possible.
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* */
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public function createShorthands() {
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$this->createBackgroundShorthand();
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$this->createDimensionsShorthand();
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// border must be shortened after dimensions
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$this->createBorderShorthand();
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$this->createFontShorthand();
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$this->createListStyleShorthand();
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}
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/**
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* Split shorthand border declarations (e.g. <tt>border: 1px red;</tt>)
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* Additional splitting happens in expandDimensionsShorthand
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* Multiple borders are not yet supported as of 3
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* */
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public function expandBorderShorthand() {
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$aBorderRules = array(
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'border', 'border-left', 'border-right', 'border-top', 'border-bottom'
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);
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$aBorderSizes = array(
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'thin', 'medium', 'thick'
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);
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$aRules = $this->getRulesAssoc();
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foreach ($aBorderRules as $sBorderRule) {
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if (!isset($aRules[$sBorderRule]))
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continue;
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$oRule = $aRules[$sBorderRule];
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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foreach ($aValues as $mValue) {
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if ($mValue instanceof Value) {
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$mNewValue = clone $mValue;
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} else {
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$mNewValue = $mValue;
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}
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if ($mValue instanceof Size) {
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$sNewRuleName = $sBorderRule . "-width";
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} else if ($mValue instanceof Color) {
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$sNewRuleName = $sBorderRule . "-color";
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} else {
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if (in_array($mValue, $aBorderSizes)) {
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$sNewRuleName = $sBorderRule . "-width";
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} else/* if(in_array($mValue, $aBorderStyles)) */ {
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$sNewRuleName = $sBorderRule . "-style";
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}
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}
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$oNewRule = new Rule($sNewRuleName, $this->iLineNo);
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$oNewRule->addValue(array($mNewValue));
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$this->addRule($oNewRule);
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}
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$this->removeRule($sBorderRule);
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}
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}
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/**
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* Split shorthand dimensional declarations (e.g. <tt>margin: 0px auto;</tt>)
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* into their constituent parts.
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* Handles margin, padding, border-color, border-style and border-width.
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* */
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public function expandDimensionsShorthand() {
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$aExpansions = array(
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'margin' => 'margin-%s',
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'padding' => 'padding-%s',
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'border-color' => 'border-%s-color',
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'border-style' => 'border-%s-style',
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'border-width' => 'border-%s-width'
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);
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$aRules = $this->getRulesAssoc();
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foreach ($aExpansions as $sProperty => $sExpanded) {
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if (!isset($aRules[$sProperty]))
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continue;
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$oRule = $aRules[$sProperty];
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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$top = $right = $bottom = $left = null;
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switch (count($aValues)) {
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case 1:
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$top = $right = $bottom = $left = $aValues[0];
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break;
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case 2:
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$top = $bottom = $aValues[0];
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$left = $right = $aValues[1];
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break;
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case 3:
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$top = $aValues[0];
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$left = $right = $aValues[1];
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$bottom = $aValues[2];
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break;
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case 4:
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$top = $aValues[0];
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$right = $aValues[1];
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$bottom = $aValues[2];
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$left = $aValues[3];
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break;
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}
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foreach (array('top', 'right', 'bottom', 'left') as $sPosition) {
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$oNewRule = new Rule(sprintf($sExpanded, $sPosition), $this->iLineNo);
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$oNewRule->addValue(${$sPosition});
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$this->addRule($oNewRule);
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}
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$this->removeRule($sProperty);
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}
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}
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/**
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* Convert shorthand font declarations
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* (e.g. <tt>font: 300 italic 11px/14px verdana, helvetica, sans-serif;</tt>)
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* into their constituent parts.
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* */
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public function expandFontShorthand() {
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$aRules = $this->getRulesAssoc();
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if (!isset($aRules['font']))
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return;
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$oRule = $aRules['font'];
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// reset properties to 'normal' per http://www.w3.org/TR/21/fonts.html#font-shorthand
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$aFontProperties = array(
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'font-style' => 'normal',
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'font-variant' => 'normal',
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'font-weight' => 'normal',
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'font-size' => 'normal',
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'line-height' => 'normal'
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);
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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foreach ($aValues as $mValue) {
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if (!$mValue instanceof Value) {
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$mValue = mb_strtolower($mValue);
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}
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if (in_array($mValue, array('normal', 'inherit'))) {
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foreach (array('font-style', 'font-weight', 'font-variant') as $sProperty) {
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if (!isset($aFontProperties[$sProperty])) {
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$aFontProperties[$sProperty] = $mValue;
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}
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}
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} else if (in_array($mValue, array('italic', 'oblique'))) {
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$aFontProperties['font-style'] = $mValue;
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} else if ($mValue == 'small-caps') {
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$aFontProperties['font-variant'] = $mValue;
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} else if (
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in_array($mValue, array('bold', 'bolder', 'lighter'))
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|| ($mValue instanceof Size
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&& in_array($mValue->getSize(), range(100, 900, 100)))
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) {
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$aFontProperties['font-weight'] = $mValue;
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} else if ($mValue instanceof RuleValueList && $mValue->getListSeparator() == '/') {
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list($oSize, $oHeight) = $mValue->getListComponents();
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$aFontProperties['font-size'] = $oSize;
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$aFontProperties['line-height'] = $oHeight;
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} else if ($mValue instanceof Size && $mValue->getUnit() !== null) {
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$aFontProperties['font-size'] = $mValue;
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} else {
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$aFontProperties['font-family'] = $mValue;
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}
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}
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foreach ($aFontProperties as $sProperty => $mValue) {
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$oNewRule = new Rule($sProperty, $this->iLineNo);
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$oNewRule->addValue($mValue);
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$this->addRule($oNewRule);
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}
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$this->removeRule('font');
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}
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/*
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* Convert shorthand background declarations
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* (e.g. <tt>background: url("chess.png") gray 50% repeat fixed;</tt>)
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* into their constituent parts.
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* @see http://www.w3.org/TR/21/colors.html#propdef-background
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* */
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public function expandBackgroundShorthand() {
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$aRules = $this->getRulesAssoc();
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if (!isset($aRules['background']))
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return;
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$oRule = $aRules['background'];
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$aBgProperties = array(
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'background-color' => array('transparent'), 'background-image' => array('none'),
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'background-repeat' => array('repeat'), 'background-attachment' => array('scroll'),
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'background-position' => array(new Size(0, '%', null, false, $this->iLineNo), new Size(0, '%', null, false, $this->iLineNo))
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);
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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if (count($aValues) == 1 && $aValues[0] == 'inherit') {
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foreach ($aBgProperties as $sProperty => $mValue) {
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$oNewRule = new Rule($sProperty, $this->iLineNo);
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$oNewRule->addValue('inherit');
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$this->addRule($oNewRule);
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}
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$this->removeRule('background');
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return;
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}
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$iNumBgPos = 0;
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foreach ($aValues as $mValue) {
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if (!$mValue instanceof Value) {
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$mValue = mb_strtolower($mValue);
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}
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if ($mValue instanceof URL) {
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$aBgProperties['background-image'] = $mValue;
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} else if ($mValue instanceof Color) {
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$aBgProperties['background-color'] = $mValue;
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} else if (in_array($mValue, array('scroll', 'fixed'))) {
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$aBgProperties['background-attachment'] = $mValue;
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} else if (in_array($mValue, array('repeat', 'no-repeat', 'repeat-x', 'repeat-y'))) {
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$aBgProperties['background-repeat'] = $mValue;
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} else if (in_array($mValue, array('left', 'center', 'right', 'top', 'bottom'))
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|| $mValue instanceof Size
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) {
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if ($iNumBgPos == 0) {
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$aBgProperties['background-position'][0] = $mValue;
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$aBgProperties['background-position'][1] = 'center';
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} else {
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$aBgProperties['background-position'][$iNumBgPos] = $mValue;
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}
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$iNumBgPos++;
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}
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}
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foreach ($aBgProperties as $sProperty => $mValue) {
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$oNewRule = new Rule($sProperty, $this->iLineNo);
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$oNewRule->addValue($mValue);
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$this->addRule($oNewRule);
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}
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$this->removeRule('background');
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}
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public function expandListStyleShorthand() {
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$aListProperties = array(
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'list-style-type' => 'disc',
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'list-style-position' => 'outside',
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'list-style-image' => 'none'
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);
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$aListStyleTypes = array(
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'none', 'disc', 'circle', 'square', 'decimal-leading-zero', 'decimal',
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'lower-roman', 'upper-roman', 'lower-greek', 'lower-alpha', 'lower-latin',
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'upper-alpha', 'upper-latin', 'hebrew', 'armenian', 'georgian', 'cjk-ideographic',
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'hiragana', 'hira-gana-iroha', 'katakana-iroha', 'katakana'
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);
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$aListStylePositions = array(
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'inside', 'outside'
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);
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$aRules = $this->getRulesAssoc();
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if (!isset($aRules['list-style']))
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return;
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$oRule = $aRules['list-style'];
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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if (count($aValues) == 1 && $aValues[0] == 'inherit') {
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foreach ($aListProperties as $sProperty => $mValue) {
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$oNewRule = new Rule($sProperty, $this->iLineNo);
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$oNewRule->addValue('inherit');
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$this->addRule($oNewRule);
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}
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$this->removeRule('list-style');
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return;
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}
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foreach ($aValues as $mValue) {
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if (!$mValue instanceof Value) {
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$mValue = mb_strtolower($mValue);
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}
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if ($mValue instanceof Url) {
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$aListProperties['list-style-image'] = $mValue;
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} else if (in_array($mValue, $aListStyleTypes)) {
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$aListProperties['list-style-types'] = $mValue;
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} else if (in_array($mValue, $aListStylePositions)) {
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$aListProperties['list-style-position'] = $mValue;
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}
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}
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foreach ($aListProperties as $sProperty => $mValue) {
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$oNewRule = new Rule($sProperty, $this->iLineNo);
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$oNewRule->setIsImportant($oRule->getIsImportant());
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$oNewRule->addValue($mValue);
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$this->addRule($oNewRule);
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}
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$this->removeRule('list-style');
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}
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public function createShorthandProperties(array $aProperties, $sShorthand) {
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$aRules = $this->getRulesAssoc();
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$aNewValues = array();
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foreach ($aProperties as $sProperty) {
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if (!isset($aRules[$sProperty]))
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continue;
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$oRule = $aRules[$sProperty];
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if (!$oRule->getIsImportant()) {
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$mRuleValue = $oRule->getValue();
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$aValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aValues[] = $mRuleValue;
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} else {
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$aValues = $mRuleValue->getListComponents();
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}
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foreach ($aValues as $mValue) {
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$aNewValues[] = $mValue;
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}
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$this->removeRule($sProperty);
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}
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}
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if (count($aNewValues)) {
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$oNewRule = new Rule($sShorthand, $this->iLineNo);
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foreach ($aNewValues as $mValue) {
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$oNewRule->addValue($mValue);
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}
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$this->addRule($oNewRule);
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}
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}
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public function createBackgroundShorthand() {
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$aProperties = array(
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'background-color', 'background-image', 'background-repeat',
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'background-position', 'background-attachment'
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);
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$this->createShorthandProperties($aProperties, 'background');
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}
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public function createListStyleShorthand() {
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$aProperties = array(
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'list-style-type', 'list-style-position', 'list-style-image'
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);
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$this->createShorthandProperties($aProperties, 'list-style');
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}
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/**
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* Combine border-color, border-style and border-width into border
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* Should be run after create_dimensions_shorthand!
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* */
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public function createBorderShorthand() {
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$aProperties = array(
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'border-width', 'border-style', 'border-color'
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);
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$this->createShorthandProperties($aProperties, 'border');
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}
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/*
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* Looks for long format CSS dimensional properties
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* (margin, padding, border-color, border-style and border-width)
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* and converts them into shorthand CSS properties.
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* */
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public function createDimensionsShorthand() {
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$aPositions = array('top', 'right', 'bottom', 'left');
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$aExpansions = array(
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'margin' => 'margin-%s',
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'padding' => 'padding-%s',
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'border-color' => 'border-%s-color',
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'border-style' => 'border-%s-style',
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'border-width' => 'border-%s-width'
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);
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$aRules = $this->getRulesAssoc();
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foreach ($aExpansions as $sProperty => $sExpanded) {
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$aFoldable = array();
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foreach ($aRules as $sRuleName => $oRule) {
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foreach ($aPositions as $sPosition) {
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if ($sRuleName == sprintf($sExpanded, $sPosition)) {
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$aFoldable[$sRuleName] = $oRule;
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}
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}
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}
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// All four dimensions must be present
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if (count($aFoldable) == 4) {
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$aValues = array();
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foreach ($aPositions as $sPosition) {
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$oRule = $aRules[sprintf($sExpanded, $sPosition)];
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$mRuleValue = $oRule->getValue();
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$aRuleValues = array();
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if (!$mRuleValue instanceof RuleValueList) {
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$aRuleValues[] = $mRuleValue;
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} else {
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|
$aRuleValues = $mRuleValue->getListComponents();
|
|
}
|
|
$aValues[$sPosition] = $aRuleValues;
|
|
}
|
|
$oNewRule = new Rule($sProperty, $this->iLineNo);
|
|
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. <tt>font-weight</tt>) and
|
|
* tries to convert them into a shorthand CSS <tt>font</tt> property.
|
|
* At least font-size AND font-family must be present in order to create a shorthand declaration.
|
|
* */
|
|
public function createFontShorthand() {
|
|
$aFontProperties = array(
|
|
'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;
|
|
}
|
|
$oNewRule = new Rule('font', $this->iLineNo);
|
|
foreach (array('font-style', 'font-variant', 'font-weight') as $sProperty) {
|
|
if (isset($aRules[$sProperty])) {
|
|
$oRule = $aRules[$sProperty];
|
|
$mRuleValue = $oRule->getValue();
|
|
$aValues = array();
|
|
if (!$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();
|
|
$aFSValues = array();
|
|
if (!$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();
|
|
$aLHValues = array();
|
|
if (!$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();
|
|
$aFFValues = array();
|
|
if (!$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);
|
|
}
|
|
}
|
|
|
|
public function __toString() {
|
|
return $this->render(new \Sabberworm\CSS\OutputFormat());
|
|
}
|
|
|
|
public function render(\Sabberworm\CSS\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 = $oOutputFormat->implode($oOutputFormat->spaceBeforeSelectorSeparator() . ',' . $oOutputFormat->spaceAfterSelectorSeparator(), $this->aSelectors) . $oOutputFormat->spaceBeforeOpeningBrace() . '{';
|
|
$sResult .= parent::render($oOutputFormat);
|
|
$sResult .= '}';
|
|
return $sResult;
|
|
}
|
|
|
|
}
|
|
|