<?php
/**
* Selector
*
* @package Less
* @subpackage tree
*/
class Less_Tree_Selector extends Less_Tree{
public $elements;
public $condition;
public $extendList = array();
public $_css;
public $index;
public $evaldCondition = false;
public $type = 'Selector';
public $currentFileInfo = array();
public $isReferenced;
public $mediaEmpty;
public $elements_len = 0;
public $_oelements;
public $_oelements_len;
public $cacheable = true;
/**
* @param boolean $isReferenced
*/
public function __construct( $elements, $extendList = array() , $condition = null, $index=null, $currentFileInfo=null, $isReferenced=null ){
$this->elements = $elements;
$this->elements_len = count($elements);
$this->extendList = $extendList;
$this->condition = $condition;
if( $currentFileInfo ){
$this->currentFileInfo = $currentFileInfo;
}
$this->isReferenced = $isReferenced;
if( !$condition ){
$this->evaldCondition = true;
}
$this->CacheElements();
}
public function accept($visitor) {
$this->elements = $visitor->visitArray($this->elements);
$this->extendList = $visitor->visitArray($this->extendList);
if( $this->condition ){
$this->condition = $visitor->visitObj($this->condition);
}
if( $visitor instanceof Less_Visitor_extendFinder ){
$this->CacheElements();
}
}
public function createDerived( $elements, $extendList = null, $evaldCondition = null ){
$newSelector = new Less_Tree_Selector( $elements, ($extendList ? $extendList : $this->extendList), null, $this->index, $this->currentFileInfo, $this->isReferenced);
$newSelector->evaldCondition = $evaldCondition ? $evaldCondition : $this->evaldCondition;
return $newSelector;
}
public function match( $other ){
if( !$other->_oelements || ($this->elements_len < $other->_oelements_len) ){
return 0;
}
for( $i = 0; $i < $other->_oelements_len; $i++ ){
if( $this->elements[$i]->value !== $other->_oelements[$i]) {
return 0;
}
}
return $other->_oelements_len; // return number of matched elements
}
public function CacheElements(){
$this->_oelements = array();
$css = '';
foreach($this->elements as $v){
$css .= $v->combinator;
if( !$v->value_is_object ){
$css .= $v->value;
continue;
}
if( !property_exists($v->value,'value') || !is_string($v->value->value) ){
$this->cacheable = false;
return;
}
$css .= $v->value->value;
}
$this->_oelements_len = preg_match_all('/[,&#\.\w-](?:[\w-]|(?:\\\\.))*/', $css, $matches);
if( $this->_oelements_len ){
$this->_oelements = $matches[0];
if( $this->_oelements[0] === '&' ){
array_shift($this->_oelements);
$this->_oelements_len--;
}
}
}
public function isJustParentSelector(){
return !$this->mediaEmpty &&
count($this->elements) === 1 &&
$this->elements[0]->value === '&' &&
($this->elements[0]->combinator === ' ' || $this->elements[0]->combinator === '');
}
public function compile($env) {
$elements = array();
foreach($this->elements as $el){
$elements[] = $el->compile($env);
}
$extendList = array();
foreach($this->extendList as $el){
$extendList[] = $el->compile($el);
}
$evaldCondition = false;
if( $this->condition ){
$evaldCondition = $this->condition->compile($env);
}
return $this->createDerived( $elements, $extendList, $evaldCondition );
}
/**
* @see Less_Tree::genCSS
*/
public function genCSS( $output, $firstSelector = true ){
if( !$firstSelector && $this->elements[0]->combinator === "" ){
$output->add(' ', $this->currentFileInfo, $this->index);
}
foreach($this->elements as $element){
$element->genCSS( $output );
}
}
public function markReferenced(){
$this->isReferenced = true;
}
public function getIsReferenced(){
return !isset($this->currentFileInfo['reference']) || !$this->currentFileInfo['reference'] || $this->isReferenced;
}
public function getIsOutput(){
return $this->evaldCondition;
}
}