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Diffstat (limited to '')
| -rw-r--r-- | library/vendor/lessphp/lib/Less/Tree/Media.php | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/library/vendor/lessphp/lib/Less/Tree/Media.php b/library/vendor/lessphp/lib/Less/Tree/Media.php new file mode 100644 index 0000000..ba25a67 --- /dev/null +++ b/library/vendor/lessphp/lib/Less/Tree/Media.php @@ -0,0 +1,173 @@ +<?php + +/** + * Media + * + * @package Less + * @subpackage tree + */ +class Less_Tree_Media extends Less_Tree { + + public $features; + public $rules; + public $index; + public $currentFileInfo; + public $isReferenced; + public $type = 'Media'; + + public function __construct( $value = array(), $features = array(), $index = null, $currentFileInfo = null ) { + $this->index = $index; + $this->currentFileInfo = $currentFileInfo; + + $selectors = $this->emptySelectors(); + + $this->features = new Less_Tree_Value( $features ); + + $this->rules = array( new Less_Tree_Ruleset( $selectors, $value ) ); + $this->rules[0]->allowImports = true; + } + + public function accept( $visitor ) { + $this->features = $visitor->visitObj( $this->features ); + $this->rules = $visitor->visitArray( $this->rules ); + } + + /** + * @see Less_Tree::genCSS + */ + public function genCSS( $output ) { + $output->add( '@media ', $this->currentFileInfo, $this->index ); + $this->features->genCSS( $output ); + Less_Tree::outputRuleset( $output, $this->rules ); + + } + + public function compile( $env ) { + $media = new Less_Tree_Media( array(), array(), $this->index, $this->currentFileInfo ); + + $strictMathBypass = false; + if ( Less_Parser::$options['strictMath'] === false ) { + $strictMathBypass = true; + Less_Parser::$options['strictMath'] = true; + } + + $media->features = $this->features->compile( $env ); + + if ( $strictMathBypass ) { + Less_Parser::$options['strictMath'] = false; + } + + $env->mediaPath[] = $media; + $env->mediaBlocks[] = $media; + + array_unshift( $env->frames, $this->rules[0] ); + $media->rules = array( $this->rules[0]->compile( $env ) ); + array_shift( $env->frames ); + + array_pop( $env->mediaPath ); + + return !$env->mediaPath ? $media->compileTop( $env ) : $media->compileNested( $env ); + } + + public function variable( $name ) { + return $this->rules[0]->variable( $name ); + } + + public function find( $selector ) { + return $this->rules[0]->find( $selector, $this ); + } + + public function emptySelectors() { + $el = new Less_Tree_Element( '', '&', $this->index, $this->currentFileInfo ); + $sels = array( new Less_Tree_Selector( array( $el ), array(), null, $this->index, $this->currentFileInfo ) ); + $sels[0]->mediaEmpty = true; + return $sels; + } + + public function markReferenced() { + $this->rules[0]->markReferenced(); + $this->isReferenced = true; + Less_Tree::ReferencedArray( $this->rules[0]->rules ); + } + + // evaltop + public function compileTop( $env ) { + $result = $this; + + if ( count( $env->mediaBlocks ) > 1 ) { + $selectors = $this->emptySelectors(); + $result = new Less_Tree_Ruleset( $selectors, $env->mediaBlocks ); + $result->multiMedia = true; + } + + $env->mediaBlocks = array(); + $env->mediaPath = array(); + + return $result; + } + + public function compileNested( $env ) { + $path = array_merge( $env->mediaPath, array( $this ) ); + + // Extract the media-query conditions separated with `,` (OR). + foreach ( $path as $key => $p ) { + $value = $p->features instanceof Less_Tree_Value ? $p->features->value : $p->features; + $path[$key] = is_array( $value ) ? $value : array( $value ); + } + + // Trace all permutations to generate the resulting media-query. + // + // (a, b and c) with nested (d, e) -> + // a and d + // a and e + // b and c and d + // b and c and e + + $permuted = $this->permute( $path ); + $expressions = array(); + foreach ( $permuted as $path ) { + + for ( $i = 0, $len = count( $path ); $i < $len; $i++ ) { + $path[$i] = Less_Parser::is_method( $path[$i], 'toCSS' ) ? $path[$i] : new Less_Tree_Anonymous( $path[$i] ); + } + + for ( $i = count( $path ) - 1; $i > 0; $i-- ) { + array_splice( $path, $i, 0, array( new Less_Tree_Anonymous( 'and' ) ) ); + } + + $expressions[] = new Less_Tree_Expression( $path ); + } + $this->features = new Less_Tree_Value( $expressions ); + + // Fake a tree-node that doesn't output anything. + return new Less_Tree_Ruleset( array(), array() ); + } + + public function permute( $arr ) { + if ( !$arr ) + return array(); + + if ( count( $arr ) == 1 ) + return $arr[0]; + + $result = array(); + $rest = $this->permute( array_slice( $arr, 1 ) ); + foreach ( $rest as $r ) { + foreach ( $arr[0] as $a ) { + $result[] = array_merge( + is_array( $a ) ? $a : array( $a ), + is_array( $r ) ? $r : array( $r ) + ); + } + } + + return $result; + } + + public function bubbleSelectors( $selectors ) { + if ( !$selectors ) return; + + $this->rules = array( new Less_Tree_Ruleset( $selectors, array( $this->rules[0] ) ) ); + } + +} |