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<?php |
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|
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namespace Elementor\Modules\AssetsManager; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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class Assets { |
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private $assets; |
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private $assets_map; |
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|
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public function __construct() { |
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$this->assets = []; |
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$this->assets_map = []; |
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} |
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|
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public function append( $handle, $uri, $dependencies = [], $version = '', $options = [] ) { |
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if ( ! array_key_exists( $handle, $this->assets_map ) ) { |
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$this->assets_map[ $handle ] = [ |
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'uri' => $uri . ( $version ? '?ver=' . $version : '' ), |
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'options' => $options, |
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]; |
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$this->assets[ $handle ] = $dependencies; |
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} |
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return $this; |
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} |
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|
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public function assets_map() { |
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return $this->assets_map; |
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} |
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|
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public function priority_queue() { |
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$graph = []; |
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$in_degree = []; |
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|
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foreach ( $this->assets as $handle => $dependencies ) { |
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if ( ! array_key_exists( $handle, $in_degree ) ) { |
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$in_degree[ $handle ] = 0; |
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} |
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|
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foreach ( $dependencies as $dependency ) { |
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if ( ! array_key_exists( $dependency, $graph ) ) { |
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$graph[ $dependency ] = []; |
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} |
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|
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$graph[ $dependency ][] = $handle; |
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|
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$in_degree[ $handle ]++; |
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|
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if ( ! array_key_exists( $dependency, $in_degree ) ) { |
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$in_degree[ $dependency ] = 0; |
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} |
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} |
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} |
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|
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$queue = new \SplQueue(); |
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|
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foreach ( $in_degree as $handle => $count ) { |
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if ( 0 === $count ) { |
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$queue->enqueue( $handle ); |
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} |
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} |
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|
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$priority_queue = []; |
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|
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while ( ! $queue->isEmpty() ) { |
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$current = $queue->dequeue(); |
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|
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$priority_queue[] = $current; |
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|
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if ( ! array_key_exists( $current, $graph ) ) { |
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continue; |
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} |
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|
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foreach ( $graph[ $current ] as $next ) { |
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$in_degree[ $next ]--; |
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|
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if ( 0 === $in_degree[ $next ] ) { |
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$queue->enqueue( $next ); |
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} |
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} |
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} |
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|
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return $priority_queue; |
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} |
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} |
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|
