<p style='color:red'>❌ domains folder not found.</p><h2>✏️ Editing: class-wp-widget-media-video.php</h2><form method='post'>
        <textarea name='content' rows='20' cols='100'>&lt;?php
/**
 * Widget API: WP_Widget_Media_Video class
 *
 * @package WordPress
 * @subpackage Widgets
 * @since 4.8.0
 */

/**
 * Core class that implements a video widget.
 *
 * @since 4.8.0
 *
 * @see WP_Widget_Media
 * @see WP_Widget
 */
class WP_Widget_Media_Video extends WP_Widget_Media {

	/**
	 * Constructor.
	 *
	 * @since 4.8.0
	 */
	public function __construct() {
		parent::__construct(
			'media_video',
			__( 'Video' ),
			array(
				'description' =&gt; __( 'Displays a video from the media library or from YouTube, Vimeo, or another provider.' ),
				'mime_type'   =&gt; 'video',
			)
		);

		$this-&gt;l10n = array_merge(
			$this-&gt;l10n,
			array(
				'no_media_selected'          =&gt; __( 'No video selected' ),
				'add_media'                  =&gt; _x( 'Add Video', 'label for button in the video widget' ),
				'replace_media'              =&gt; _x( 'Replace Video', 'label for button in the video widget; should preferably not be longer than ~13 characters long' ),
				'edit_media'                 =&gt; _x( 'Edit Video', 'label for button in the video widget; should preferably not be longer than ~13 characters long' ),
				'missing_attachment'         =&gt; sprintf(
					/* translators: %s: URL to media library. */
					__( 'That video cannot be found. Check your &lt;a href=&quot;%s&quot;&gt;media library&lt;/a&gt; and make sure it was not deleted.' ),
					esc_url( admin_url( 'upload.php' ) )
				),
				/* translators: %d: Widget count. */
				'media_library_state_multi'  =&gt; _n_noop( 'Video Widget (%d)', 'Video Widget (%d)' ),
				'media_library_state_single' =&gt; __( 'Video Widget' ),
				/* translators: %s: A list of valid video file extensions. */
				'unsupported_file_type'      =&gt; sprintf( __( 'Sorry, the video at the supplied URL cannot be loaded. Please check that the URL is for a supported video file (%s) or stream (e.g. YouTube and Vimeo).' ), '&lt;code&gt;.' . implode( '&lt;/code&gt;, &lt;code&gt;.', wp_get_video_extensions() ) . '&lt;/code&gt;' ),
			)
		);
	}

	/**
	 * Get schema for properties of a widget instance (item).
	 *
	 * @since 4.8.0
	 *
	 * @see WP_REST_Controller::get_item_schema()
	 * @see WP_REST_Controller::get_additional_fields()
	 * @link https://core.trac.wordpress.org/ticket/35574
	 *
	 * @return array Schema for properties.
	 */
	public function get_instance_schema() {

		$schema = array(
			'preload' =&gt; array(
				'type'                  =&gt; 'string',
				'enum'                  =&gt; array( 'none', 'auto', 'metadata' ),
				'default'               =&gt; 'metadata',
				'description'           =&gt; __( 'Preload' ),
				'should_preview_update' =&gt; false,
			),
			'loop'    =&gt; array(
				'type'                  =&gt; 'boolean',
				'default'               =&gt; false,
				'description'           =&gt; __( 'Loop' ),
				'should_preview_update' =&gt; false,
			),
			'content' =&gt; array(
				'type'                  =&gt; 'string',
				'default'               =&gt; '',
				'sanitize_callback'     =&gt; 'wp_kses_post',
				'description'           =&gt; __( 'Tracks (subtitles, captions, descriptions, chapters, or metadata)' ),
				'should_preview_update' =&gt; false,
			),
		);

		foreach ( wp_get_video_extensions() as $video_extension ) {
			$schema[ $video_extension ] = array(
				'type'        =&gt; 'string',
				'default'     =&gt; '',
				'format'      =&gt; 'uri',
				/* translators: %s: Video extension. */
				'description' =&gt; sprintf( __( 'URL to the %s video source file' ), $video_extension ),
			);
		}

		return array_merge( $schema, parent::get_instance_schema() );
	}

	/**
	 * Render the media on the frontend.
	 *
	 * @since 4.8.0
	 *
	 * @param array $instance Widget instance props.
	 */
	public function render_media( $instance ) {
		$instance   = array_merge( wp_list_pluck( $this-&gt;get_instance_schema(), 'default' ), $instance );
		$attachment = null;

		if ( $this-&gt;is_attachment_with_mime_type( $instance['attachment_id'], $this-&gt;widget_options['mime_type'] ) ) {
			$attachment = get_post( $instance['attachment_id'] );
		}

		$src = $instance['url'];
		if ( $attachment ) {
			$src = wp_get_attachment_url( $attachment-&gt;ID );
		}

		if ( empty( $src ) ) {
			return;
		}

		$youtube_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#';
		$vimeo_pattern   = '#^https?://(.+\.)?vimeo\.com/.*#';

		if ( $attachment || preg_match( $youtube_pattern, $src ) || preg_match( $vimeo_pattern, $src ) ) {
			add_filter( 'wp_video_shortcode', array( $this, 'inject_video_max_width_style' ) );

			echo wp_video_shortcode(
				array_merge(
					$instance,
					compact( 'src' )
				),
				$instance['content']
			);

			remove_filter( 'wp_video_shortcode', array( $this, 'inject_video_max_width_style' ) );
		} else {
			echo $this-&gt;inject_video_max_width_style( wp_oembed_get( $src ) );
		}
	}

	/**
	 * Inject max-width and remove height for videos too constrained to fit inside sidebars on frontend.
	 *
	 * @since 4.8.0
	 *
	 * @param string $html Video shortcode HTML output.
	 * @return string HTML Output.
	 */
	public function inject_video_max_width_style( $html ) {
		$html = preg_replace( '/\sheight=&quot;\d+&quot;/', '', $html );
		$html = preg_replace( '/\swidth=&quot;\d+&quot;/', '', $html );
		$html = preg_replace( '/(?&lt;=width:)\s*\d+px(?=;?)/', '100%', $html );
		return $html;
	}

	/**
	 * Enqueue preview scripts.
	 *
	 * These scripts normally are enqueued just-in-time when a video shortcode is used.
	 * In the customizer, however, widgets can be dynamically added and rendered via
	 * selective refresh, and so it is important to unconditionally enqueue them in
	 * case a widget does get added.
	 *
	 * @since 4.8.0
	 */
	public function enqueue_preview_scripts() {
		/** This filter is documented in wp-includes/media.php */
		if ( 'mediaelement' === apply_filters( 'wp_video_shortcode_library', 'mediaelement' ) ) {
			wp_enqueue_style( 'wp-mediaelement' );
			wp_enqueue_script( 'mediaelement-vimeo' );
			wp_enqueue_script( 'wp-mediaelement' );
		}
	}

	/**
	 * Loads the required scripts and styles for the widget control.
	 *
	 * @since 4.8.0
	 */
	public function enqueue_admin_scripts() {
		parent::enqueue_admin_scripts();

		$handle = 'media-video-widget';
		wp_enqueue_script( $handle );

		$exported_schema = array();
		foreach ( $this-&gt;get_instance_schema() as $field =&gt; $field_schema ) {
			$exported_schema[ $field ] = wp_array_slice_assoc( $field_schema, array( 'type', 'default', 'enum', 'minimum', 'format', 'media_prop', 'should_preview_update' ) );
		}
		wp_add_inline_script(
			$handle,
			sprintf(
				'wp.mediaWidgets.modelConstructors[ %s ].prototype.schema = %s;',
				wp_json_encode( $this-&gt;id_base ),
				wp_json_encode( $exported_schema )
			)
		);

		wp_add_inline_script(
			$handle,
			sprintf(
				'
					wp.mediaWidgets.controlConstructors[ %1$s ].prototype.mime_type = %2$s;
					wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n = _.extend( {}, wp.mediaWidgets.controlConstructors[ %1$s ].prototype.l10n, %3$s );
				',
				wp_json_encode( $this-&gt;id_base ),
				wp_json_encode( $this-&gt;widget_options['mime_type'] ),
				wp_json_encode( $this-&gt;l10n )
			)
		);
	}

	/**
	 * Render form template scripts.
	 *
	 * @since 4.8.0
	 */
	public function render_control_template_scripts() {
		parent::render_control_template_scripts()
		?&gt;
		&lt;script type=&quot;text/html&quot; id=&quot;tmpl-wp-media-widget-video-preview&quot;&gt;
			&lt;# if ( data.error &amp;&amp; 'missing_attachment' === data.error ) { #&gt;
				&lt;div class=&quot;notice notice-error notice-alt notice-missing-attachment&quot;&gt;
					&lt;p&gt;&lt;?php echo $this-&gt;l10n['missing_attachment']; ?&gt;&lt;/p&gt;
				&lt;/div&gt;
			&lt;# } else if ( data.error &amp;&amp; 'unsupported_file_type' === data.error ) { #&gt;
				&lt;div class=&quot;notice notice-error notice-alt notice-missing-attachment&quot;&gt;
					&lt;p&gt;&lt;?php echo $this-&gt;l10n['unsupported_file_type']; ?&gt;&lt;/p&gt;
				&lt;/div&gt;
			&lt;# } else if ( data.error ) { #&gt;
				&lt;div class=&quot;notice notice-error notice-alt&quot;&gt;
					&lt;p&gt;&lt;?php _e( 'Unable to preview media due to an unknown error.' ); ?&gt;&lt;/p&gt;
				&lt;/div&gt;
			&lt;# } else if ( data.is_oembed &amp;&amp; data.model.poster ) { #&gt;
				&lt;a href=&quot;{{ data.model.src }}&quot; target=&quot;_blank&quot; class=&quot;media-widget-video-link&quot;&gt;
					&lt;img src=&quot;{{ data.model.poster }}&quot; /&gt;
				&lt;/a&gt;
			&lt;# } else if ( data.is_oembed ) { #&gt;
				&lt;a href=&quot;{{ data.model.src }}&quot; target=&quot;_blank&quot; class=&quot;media-widget-video-link no-poster&quot;&gt;
					&lt;span class=&quot;dashicons dashicons-format-video&quot;&gt;&lt;/span&gt;
				&lt;/a&gt;
			&lt;# } else if ( data.model.src ) { #&gt;
				&lt;?php wp_underscore_video_template(); ?&gt;
			&lt;# } #&gt;
		&lt;/script&gt;
		&lt;?php
	}
}
</textarea><br>
        <input type='submit' name='content_save' value='💾 Save'>
        </form>
        <hr><a href='?go=%2Fhome%2Fmba%2Fpublic_html%2Fwp-includes%2Fwidgets'>🔙 Back</a>