<h2>File Contents: /home/planet5/public_html/wp-content/plugins/amp/includes/admin/copy_of_class-amp-editor-blocks.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/public_html/wp-content/plugins/amp/includes/admin/copy_of_class-amp-editor-blocks.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * AMP Editor Blocks extending.
 *
 * @package AMP
 * @since 1.0
 */

/**
 * Class AMP_Editor_Blocks
 *
 * @todo Remove this when AMP-specific blocks are removed. They have been deprecated as of &lt;https://github.com/ampproject/amp-wp/issues/4556&gt;.
 * @internal
 */
class AMP_Editor_Blocks {

	/**
	 * List of AMP scripts that need to be printed when AMP components are used in non-AMP document context (&quot;dirty AMP&quot;).
	 *
	 * @var array
	 */
	public $content_required_amp_scripts = [];

	/**
	 * AMP components that have blocks.
	 *
	 * @var string[]
	 */
	const AMP_BLOCKS = [
		&#039;amp-mathml&#039;,
		&#039;amp-timeago&#039;,
		&#039;amp-o2-player&#039;,
		&#039;amp-ooyala-player&#039;,
		&#039;amp-reach-player&#039;,
		&#039;amp-springboard-player&#039;,
		&#039;amp-jwplayer&#039;,
		&#039;amp-brid-player&#039;,
		&#039;amp-ima-video&#039;,
	];

	/**
	 * Init.
	 */
	public function init() {
		if ( function_exists( &#039;register_block_type&#039; ) ) {
			add_filter( &#039;wp_kses_allowed_html&#039;, [ $this, &#039;include_block_atts_in_wp_kses_allowed_html&#039; ], 10, 2 );

			/*
			 * Dirty AMP is required when a site is in AMP-first mode but not all templates are being served
			 * as AMP. In particular, if a single post is using AMP-specific Gutenberg Blocks which make
			 * use of AMP components, and the singular template is served as AMP but the blog page is not,
			 * then the non-AMP blog page need to load the AMP runtime scripts so that the AMP components
			 * in the posts displayed there will be rendered properly. This is only relevant on AMP-first
			 * sites because the AMP Gutenberg blocks are only made available in that mode; they are not
			 * presented in the Gutenberg inserter in transitional mode. In general, using AMP components in
			 * non-AMP documents is still not officially supported, so it&#039;s occurrence is being minimized
			 * as much as possible. For more, see &lt;https://github.com/ampproject/amp-wp/issues/1192&gt;.
			 */
			if ( amp_is_canonical() ) {
				add_filter( &#039;the_content&#039;, [ $this, &#039;tally_content_requiring_amp_scripts&#039; ] );
				add_action( &#039;wp_print_footer_scripts&#039;, [ $this, &#039;print_dirty_amp_scripts&#039; ] );
			}
		}
	}

	/**
	 * Allowlist elements and attributes used for AMP.
	 *
	 * This prevents AMP markup from being deleted when the user doesn&#039;t have the `unfiltered_html` capability.
	 *
	 * @param array  $tags    Array of allowed post tags.
	 * @param string $context Context.
	 * @return mixed Modified array.
	 */
	public function include_block_atts_in_wp_kses_allowed_html( $tags, $context ) {
		if ( &#039;post&#039; !== $context ) {
			return $tags;
		}

		foreach ( self::AMP_BLOCKS as $amp_block ) {
			if ( ! isset( $tags[ $amp_block ] ) ) {
				$tags[ $amp_block ] = [];
			}

			// @todo The global attributes included here should be matched up with what is actually used by each block.
			$tags[ $amp_block ] = array_merge(
				array_fill_keys(
					[
						&#039;layout&#039;,
						&#039;width&#039;,
						&#039;height&#039;,
						&#039;class&#039;,
					],
					true
				),
				$tags[ $amp_block ]
			);

			$amp_tag_specs = AMP_Allowed_Tags_Generated::get_allowed_tag( $amp_block );
			foreach ( $amp_tag_specs as $amp_tag_spec ) {
				if ( ! isset( $amp_tag_spec[ AMP_Rule_Spec::ATTR_SPEC_LIST ] ) ) {
					continue;
				}
				$tags[ $amp_block ] = array_merge(
					$tags[ $amp_block ],
					array_fill_keys( array_keys( $amp_tag_spec[ AMP_Rule_Spec::ATTR_SPEC_LIST ] ), true )
				);
			}
		}

		return $tags;
	}

	/**
	 * Tally the AMP component scripts that are needed in a dirty AMP document.
	 *
	 * @param string $content Content.
	 * @return string Content (unmodified).
	 */
	public function tally_content_requiring_amp_scripts( $content ) {
		if ( ! amp_is_request() ) {
			$pattern = sprintf( &#039;/&lt;(%s)\b.*?&gt;/s&#039;, implode( &#039;|&#039;, self::AMP_BLOCKS ) );
			if ( preg_match_all( $pattern, $content, $matches ) ) {
				$this-&gt;content_required_amp_scripts = array_merge(
					$this-&gt;content_required_amp_scripts,
					$matches[1]
				);
			}
		}
		return $content;
	}

	/**
	 * Print AMP scripts required for AMP components used in a non-AMP document (dirty AMP).
	 */
	public function print_dirty_amp_scripts() {
		if ( ! amp_is_request() &amp;&amp; ! empty( $this-&gt;content_required_amp_scripts ) ) {
			wp_scripts()-&gt;do_items( $this-&gt;content_required_amp_scripts );
		}
	}
}
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