59 lines
1.6 KiB
PHP
Executable File
59 lines
1.6 KiB
PHP
Executable File
<?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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*
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* @return string Returns the block content.
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*/
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function render_block_core_file( $attributes, $content ) {
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$should_load_view_script = ! empty( $attributes['displayPreview'] ) && ! wp_script_is( 'wp-block-file-view' );
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if ( $should_load_view_script ) {
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wp_enqueue_script( 'wp-block-file-view' );
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}
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// Update object's aria-label attribute if present in block HTML.
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// Match an aria-label attribute from an object tag.
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$pattern = '@<object.+(?<attribute>aria-label="(?<filename>[^"]+)?")@i';
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$content = preg_replace_callback(
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$pattern,
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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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return $content;
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}
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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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