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81 lines
1.8 KiB
81 lines
1.8 KiB
5 years ago
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<?php
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/**
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* YoastSEO_AMP_Glue plugin file.
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*
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* @package YoastSEO_AMP_Glue\CSS_Builder
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* @author Jip Moors
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* @copyright 2016 Yoast BV
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* @license GPL-2.0+
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*/
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if ( ! class_exists( 'YoastSEO_AMP_CSS_Builder', false ) ) {
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/**
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* Class to build CSS.
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*/
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class YoastSEO_AMP_CSS_Builder {
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/**
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* Option to CSS lookup map.
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*
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* @var array
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*/
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private $items = array();
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/**
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* Adds the passed option to the CSS map.
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*
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* @param string $option_key Option key.
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* @param string $selector CSS Selector.
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* @param string $property CSS Property that will hold the value of the option.
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*
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* @return void
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*/
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public function add_option( $option_key, $selector, $property ) {
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$this->items[ $option_key ] = array(
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'selector' => $selector,
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'property' => $property,
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);
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}
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/**
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* Builds the CSS, based on the passed options, to be used on the frontend.
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*
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* @return string The CSS to be used on the frontend.
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*/
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public function build() {
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$options = YoastSEO_AMP_Options::get();
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$output = "\n";
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$css = array();
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$options = array_filter( $options );
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$apply = array_intersect_key( $this->items, $options );
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if ( is_array( $apply ) ) {
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foreach ( $apply as $key => $placement ) {
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if ( ! isset( $css[ $placement['selector'] ] ) ) {
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$css[ $placement['selector'] ] = array();
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}
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$css[ $placement['selector'] ][ $placement['property'] ] = $options[ $key ];
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}
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}
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if ( ! empty( $css ) ) {
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foreach ( $css as $selector => $properties ) {
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$inner = '';
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foreach ( $properties as $property => $value ) {
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$inner .= sprintf( "%s: %s;\n", $property, $value );
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}
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$output .= sprintf( "%s {\n%s}\n", $selector, $inner );
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}
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}
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return $output;
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}
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}
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}
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