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