101 lines
3.3 KiB
PHP
101 lines
3.3 KiB
PHP
<?php
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/**
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* Server-side rendering of the `core/file` block.
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*
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* @package WordPress
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*/
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/**
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* When the `core/file` block is rendering, check if we need to enqueue the `wp-block-file-view` script.
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*
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* @param array $attributes The block attributes.
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* @param string $content The block content.
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* @param WP_Block $block The parsed block.
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*
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* @return string Returns the block content.
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*/
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function render_block_core_file( $attributes, $content, $block ) {
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$should_load_view_script = ! empty( $attributes['displayPreview'] );
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$view_js_file = 'wp-block-file-view';
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// If the script already exists, there is no point in removing it from viewScript.
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if ( ! wp_script_is( $view_js_file ) ) {
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$script_handles = $block->block_type->view_script_handles;
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// If the script is not needed, and it is still in the `view_script_handles`, remove it.
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if ( ! $should_load_view_script && in_array( $view_js_file, $script_handles, true ) ) {
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$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_js_file ) );
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}
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// If the script is needed, but it was previously removed, add it again.
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if ( $should_load_view_script && ! in_array( $view_js_file, $script_handles, true ) ) {
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$block->block_type->view_script_handles = array_merge( $script_handles, array( $view_js_file ) );
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}
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}
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// Update object's aria-label attribute if present in block HTML.
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// Match an aria-label attribute from an object tag.
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$pattern = '@<object.+(?<attribute>aria-label="(?<filename>[^"]+)?")@i';
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$content = preg_replace_callback(
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$pattern,
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static function ( $matches ) {
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$filename = ! empty( $matches['filename'] ) ? $matches['filename'] : '';
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$has_filename = ! empty( $filename ) && 'PDF embed' !== $filename;
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$label = $has_filename ?
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sprintf(
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/* translators: %s: filename. */
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__( 'Embed of %s.' ),
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$filename
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)
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: __( 'PDF embed' );
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return str_replace( $matches['attribute'], sprintf( 'aria-label="%s"', $label ), $matches[0] );
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},
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$content
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);
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// If it uses the Interactivity API, add the directives.
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if ( $should_load_view_script ) {
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$processor = new WP_HTML_Tag_Processor( $content );
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$processor->next_tag();
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$processor->set_attribute( 'data-wp-interactive', '' );
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$processor->next_tag( 'object' );
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$processor->set_attribute( 'data-wp-bind--hidden', '!selectors.core.file.hasPdfPreview' );
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$processor->set_attribute( 'hidden', true );
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return $processor->get_updated_html();
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}
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return $content;
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}
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/**
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* Ensure that the view script has the `wp-interactivity` dependency.
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*
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* @since 6.4.0
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*
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* @global WP_Scripts $wp_scripts
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*/
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function block_core_file_ensure_interactivity_dependency() {
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global $wp_scripts;
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if (
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isset( $wp_scripts->registered['wp-block-file-view'] ) &&
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! in_array( 'wp-interactivity', $wp_scripts->registered['wp-block-file-view']->deps, true )
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) {
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$wp_scripts->registered['wp-block-file-view']->deps[] = 'wp-interactivity';
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}
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}
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add_action( 'wp_print_scripts', 'block_core_file_ensure_interactivity_dependency' );
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/**
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* Registers the `core/file` block on server.
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*/
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function register_block_core_file() {
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register_block_type_from_metadata(
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__DIR__ . '/file',
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array(
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'render_callback' => 'render_block_core_file',
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)
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);
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}
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add_action( 'init', 'register_block_core_file' );
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