147 lines
3.3 KiB
PHP
147 lines
3.3 KiB
PHP
<?php
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/**
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* Class AMP_Playbuzz_Sanitizer
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*
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* @package AMP
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*/
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/**
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* Class AMP_Playbuzz_Sanitizer
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*
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* Converts Playbuzz embed to <amp-playbuzz>
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*
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* @see https://www.playbuzz.com/
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*/
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class AMP_Playbuzz_Sanitizer extends AMP_Base_Sanitizer {
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/**
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* Tag.
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*
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* @var string HTML tag to identify and replace with AMP version.
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* @since 0.2
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*/
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public static $tag = 'div';
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/**
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* PlayBuzz class.
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*
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* @var string CSS class to identify Playbuzz <div> to replace with AMP version.
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*
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* @since 0.2
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*/
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public static $pb_class = 'pb_feed';
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/**
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* Hardcoded height to set for Playbuzz elements.
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*
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* @var string
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*
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* @since 0.2
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*/
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private static $height = '500';
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/**
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* Get mapping of HTML selectors to the AMP component selectors which they may be converted into.
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*
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* @return array Mapping.
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*/
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public function get_selector_conversion_mapping() {
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return array(
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'div.pb_feed' => array( 'amp-playbuzz.pb_feed' ),
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);
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}
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/**
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* Sanitize the Playbuzz elements from the HTML contained in this instance's DOMDocument.
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*
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* @since 0.2
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*/
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public function sanitize() {
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$nodes = $this->dom->getElementsByTagName( self::$tag );
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$num_nodes = $nodes->length;
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if ( 0 === $num_nodes ) {
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return;
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}
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for ( $i = $num_nodes - 1; $i >= 0; $i-- ) {
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$node = $nodes->item( $i );
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if ( self::$pb_class !== $node->getAttribute( 'class' ) ) {
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continue;
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}
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$old_attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array( $node );
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$new_attributes = $this->filter_attributes( $old_attributes );
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if ( ! isset( $new_attributes['data-item'] ) && ! isset( $new_attributes['src'] ) ) {
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continue;
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}
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$new_node = AMP_DOM_Utils::create_node( $this->dom, 'amp-playbuzz', $new_attributes );
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$node->parentNode->replaceChild( $new_node, $node );
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$this->did_convert_elements = true;
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}
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}
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/**
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* "Filter" HTML attributes for <amp-audio> elements.
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*
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* @since 0.2
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*
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* @param string[] $attributes {
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* Attributes.
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*
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* @type string $data-item Playbuzz <div> attribute - Pass along if found and not empty.
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* @type string $data-game Playbuzz <div> attribute - Assign to its value to $attributes['src'] if found and not empty.
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* @type string $data-game-info Playbuzz <div> attribute - Assign to its value to $attributes['data-item-info'] if found.
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* @type string $data-shares Playbuzz <div> attribute - Assign to its value to $attributes['data-share-buttons'] if found.
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* @type string $data-comments Playbuzz <div> attribute - Pass along if found.
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* @type int $height Playbuzz <div> attribute - Set to hardcoded value of 500.
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* }
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* @return array Returns HTML attributes; removes any not specifically declared above from input.
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*/
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private function filter_attributes( $attributes ) {
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$out = array();
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foreach ( $attributes as $name => $value ) {
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switch ( $name ) {
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case 'data-item':
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if ( ! empty( $value ) ) {
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$out['data-item'] = $value;
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}
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break;
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case 'data-game':
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if ( ! empty( $value ) ) {
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$out['src'] = $value;
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}
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break;
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case 'data-shares':
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$out['data-share-buttons'] = $value;
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break;
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case 'data-game-info':
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case 'data-comments':
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case 'class':
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$out[ $name ] = $value;
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break;
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default:
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break;
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}
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}
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$out['height'] = self::$height;
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return $out;
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}
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}
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