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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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