66 lines
1.5 KiB
PHP
66 lines
1.5 KiB
PHP
<?php
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/**
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* Class AMP_Issuu_Embed_Handler
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*
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* @package AMP
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* @since 0.7
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*/
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/**
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* Class AMP_Issuu_Embed_Handler
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*/
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class AMP_Issuu_Embed_Handler extends AMP_Base_Embed_Handler {
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/**
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* Regex matched to produce output amp-iframe.
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*
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* @const string
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*/
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const URL_PATTERN = '#https?://(www\.)?issuu\.com/.+/docs/.+#i';
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/**
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* Register embed.
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*/
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public function register_embed() {
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add_filter( 'embed_oembed_html', array( $this, 'filter_embed_oembed_html' ), 10, 3 );
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}
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/**
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* Unregister embed.
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*/
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public function unregister_embed() {
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remove_filter( 'embed_oembed_html', array( $this, 'filter_embed_oembed_html' ), 10 );
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}
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/**
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* Filter oEmbed HTML for Meetup to prepare it for AMP.
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*
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* @param mixed $return The shortcode callback function to call.
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* @param string $url The attempted embed URL.
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* @param array $attr An array of shortcode attributes.
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* @return string Embed.
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*/
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public function filter_embed_oembed_html( $return, $url, $attr ) {
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$parsed_url = wp_parse_url( $url );
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if ( false !== strpos( $parsed_url['host'], 'issuu.com' ) ) {
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if ( preg_match( '/width\s*:\s*(\d+)px/', $return, $matches ) ) {
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$attr['width'] = $matches[1];
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}
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if ( preg_match( '/height\s*:\s*(\d+)px/', $return, $matches ) ) {
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$attr['height'] = $matches[1];
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}
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$return = AMP_HTML_Utils::build_tag(
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'amp-iframe',
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array(
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'width' => $attr['width'],
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'height' => $attr['height'],
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'src' => $url,
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'sandbox' => 'allow-scripts allow-same-origin',
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)
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);
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}
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return $return;
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}
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}
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