<?php

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namespace Elementor;

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if ( ! defined( 'ABSPATH' ) ) {

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exit; // Exit if accessed directly.

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}

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/**

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* Elementor embed.

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*

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* Elementor embed handler class is responsible for Elementor embed functionality.

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* The class holds the supported providers with their embed patters, and handles

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* their custom properties to create custom HTML with the embedded content.

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*

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* @since 1.5.0

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*/

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class Embed {

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/**

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* Provider match masks.

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*

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* Holds a list of supported providers with their URL structure in a regex format.

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*

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* @since 1.5.0

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* @access private

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* @static

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*

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* @var array Provider URL structure regex.

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*/

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private static $provider_match_masks = [

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'youtube' => '/^.*(?:youtu\.be\/|youtube(?:-nocookie)?\.com\/(?:(?:watch)?\?(?:.*&)?vi?=|(?:embed|v|vi|user|shorts)\/))([^\?&\"\'>]+)/',

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'vimeo' => '/^.*vimeo\.com\/(?:[a-z]*\/)*([‌​0-9]{6,11})[?]?.*/',

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'dailymotion' => '/^.*dailymotion.com\/(?:video|hub)\/([^_]+)[^#]*(#video=([^_&]+))?/',

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'videopress' => [

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'/^(?:http(?:s)?:\/\/)?videos\.files\.wordpress\.com\/([a-zA-Z\d]{8,})\//i',

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'/^(?:http(?:s)?:\/\/)?(?:www\.)?video(?:\.word)?press\.com\/(?:v|embed)\/([a-zA-Z\d]{8,})(.+)?/i',

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],

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];

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/**

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* Embed patterns.

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*

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* Holds a list of supported providers with their embed patters.

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*

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* @since 1.5.0

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* @access private

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* @static

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*

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* @var array Embed patters.

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*/

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private static $embed_patterns = [

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'youtube' => 'https://www.youtube{NO_COOKIE}.com/embed/{VIDEO_ID}?feature=oembed',

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'vimeo' => 'https://player.vimeo.com/video/{VIDEO_ID}#t={TIME}',

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'dailymotion' => 'https://dailymotion.com/embed/video/{VIDEO_ID}',

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'videopress' => 'https://videopress.com/embed/{VIDEO_ID}',

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];

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/**

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* Get video properties.

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*

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* Retrieve the video properties for a given video URL.

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*

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* @since 1.5.0

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* @access public

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* @static

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*

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* @param string $video_url Video URL.

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*

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* @return null|array The video properties, or null.

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*/

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public static function get_video_properties( $video_url ) {

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foreach ( self::$provider_match_masks as $provider => $match_mask ) {

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if ( ! is_array( $match_mask ) ) {

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$match_mask = [ $match_mask ];

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}

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foreach ( $match_mask as $mask ) {

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if ( preg_match( $mask, $video_url, $matches ) ) {

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return [

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'provider' => $provider,

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'video_id' => $matches[1],

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];

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}

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}

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}

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return null;

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}

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/**

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* Get embed URL.

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*

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* Retrieve the embed URL for a given video.

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*

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* @since 1.5.0

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* @access public

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* @static

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*

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* @param string $video_url Video URL.

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* @param array $embed_url_params Optional. Embed parameters. Default is an

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* empty array.

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* @param array $options Optional. Embed options. Default is an

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* empty array.

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*

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* @return null|array The video properties, or null.

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*/

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public static function get_embed_url( $video_url, array $embed_url_params = [], array $options = [] ) {

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$video_properties = self::get_video_properties( $video_url );

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if ( ! $video_properties ) {

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return null;

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}

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$embed_pattern = self::$embed_patterns[ $video_properties['provider'] ];

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$replacements = [

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'{VIDEO_ID}' => $video_properties['video_id'],

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];

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if ( 'youtube' === $video_properties['provider'] ) {

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$replacements['{NO_COOKIE}'] = ! empty( $options['privacy'] ) ? '-nocookie' : '';

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} elseif ( 'vimeo' === $video_properties['provider'] ) {

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$time_text = '';

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if ( ! empty( $options['start'] ) ) {

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$time_text = date( 'H\hi\ms\s', $options['start'] ); // PHPCS:Ignore WordPress.DateTime.RestrictedFunctions.date_date

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}

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$replacements['{TIME}'] = $time_text;

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/**

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* Handle Vimeo private videos

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*

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* Vimeo requires an additional parameter when displaying private/unlisted videos. It has two ways of

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* passing that parameter:

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* * as an endpoint - vimeo.com/{video_id}/{privacy_token}

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* OR

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* * as a GET parameter named `h` - vimeo.com/{video_id}?h={privacy_token}

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*

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* The following regex match looks for either of these methods in the Vimeo URL, and if it finds a privacy

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* token, it adds it to the embed params array as the `h` parameter (which is how Vimeo can receive it when

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* using Oembed).

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*/

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$h_param = [];

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preg_match( '/(?|(?:[\?|\&]h={1})([\w]+)|\d\/([\w]+))/', $video_url, $h_param );

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if ( ! empty( $h_param ) ) {

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$embed_url_params['h'] = $h_param[1];

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}

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}

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$embed_pattern = str_replace( array_keys( $replacements ), $replacements, $embed_pattern );

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return add_query_arg( $embed_url_params, $embed_pattern );

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}

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/**

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* Get embed HTML.

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*

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* Retrieve the final HTML of the embedded URL.

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*

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* @since 1.5.0

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* @access public

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* @static

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*

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* @param string $video_url Video URL.

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* @param array $embed_url_params Optional. Embed parameters. Default is an

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* empty array.

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* @param array $options Optional. Embed options. Default is an

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* empty array.

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* @param array $frame_attributes Optional. IFrame attributes. Default is an

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* empty array.

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*

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* @return string The embed HTML.

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*/

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public static function get_embed_html( $video_url, array $embed_url_params = [], array $options = [], array $frame_attributes = [] ) {

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$video_properties = self::get_video_properties( $video_url );

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$default_frame_attributes = [

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'class' => 'elementor-video-iframe',

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'allowfullscreen',

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'allow' => 'clipboard-write',

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'title' => sprintf(

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/* translators: %s: Video provider */

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__( '%s Video Player', 'elementor' ),

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$video_properties['provider']

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),

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];

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$video_embed_url = self::get_embed_url( $video_url, $embed_url_params, $options );

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if ( ! $video_embed_url ) {

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return null;

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}

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if ( ! isset( $options['lazy_load'] ) || ! $options['lazy_load'] ) {

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$default_frame_attributes['src'] = $video_embed_url;

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} else {

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$default_frame_attributes['data-lazy-load'] = $video_embed_url;

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}

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if ( isset( $embed_url_params['autoplay'] ) ) {

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$default_frame_attributes['allow'] = 'autoplay';

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}

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$frame_attributes = array_merge( $default_frame_attributes, $frame_attributes );

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$attributes_for_print = [];

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foreach ( $frame_attributes as $attribute_key => $attribute_value ) {

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$attribute_value = esc_attr( $attribute_value );

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if ( is_numeric( $attribute_key ) ) {

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$attributes_for_print[] = $attribute_value;

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} else {

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$attributes_for_print[] = sprintf( '%1$s="%2$s"', $attribute_key, $attribute_value );

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}

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}

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$attributes_for_print = implode( ' ', $attributes_for_print );

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$iframe_html = "<iframe $attributes_for_print></iframe>";

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/** This filter is documented in wp-includes/class-oembed.php */

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return apply_filters( 'oembed_result', $iframe_html, $video_url, $frame_attributes );

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}

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/**

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* Get oembed data from the cache.

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* if not exists in the cache it will fetch from provider and then save to the cache.

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*

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* @param string $oembed_url

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* @param string $cached_post_id

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*

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* @return array|null

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*/

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public static function get_oembed_data( $oembed_url, $cached_post_id ) {

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$cached_oembed_data = json_decode( get_post_meta( $cached_post_id, '_elementor_oembed_cache', true ), true );

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if ( isset( $cached_oembed_data[ $oembed_url ] ) ) {

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return $cached_oembed_data[ $oembed_url ];

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}

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$normalize_oembed_data = self::fetch_oembed_data( $oembed_url );

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if ( ! $cached_oembed_data ) {

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$cached_oembed_data = [];

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}

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update_post_meta( $cached_post_id, '_elementor_oembed_cache', wp_json_encode( array_merge(

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$cached_oembed_data,

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[

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$oembed_url => $normalize_oembed_data,

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]

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) ) );

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return $normalize_oembed_data;

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}

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/**

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* Fetch oembed data from oembed provider.

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*

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* @param string $oembed_url

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* @return array|null

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*/

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public static function fetch_oembed_data( $oembed_url ) {

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$oembed_data = _wp_oembed_get_object()->get_data( $oembed_url );

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if ( ! $oembed_data ) {

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return null;

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}

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return [

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'thumbnail_url' => $oembed_data->thumbnail_url,

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'title' => $oembed_data->title,

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];

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}

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/**

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* @param string $oembed_url

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* @param null|string|int $cached_post_id

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*

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* @return string|null

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*/

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public static function get_embed_thumbnail_html( $oembed_url, $cached_post_id = null ) {

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$oembed_data = self::get_oembed_data( $oembed_url, $cached_post_id );

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if ( ! $oembed_data ) {

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return null;

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}

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return '<div class="elementor-image">' . sprintf( '<img src="%1$s" alt="%2$s" title="%2$s" width="%3$s" loading="lazy" />', $oembed_data['thumbnail_url'], esc_attr( $oembed_data['title'] ), '100%' ) . '</div>';

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}

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}

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