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<?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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/** |
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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 gutenberg_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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|
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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( $view_js_file ) ); |
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} |
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} |
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|
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// Update object's aria-label attribute if present in block HTML. |
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|
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// Match an aria-label attribute from an object tag. |
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$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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|
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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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|
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// If it uses the Interactivity API, add the directives. |
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if ( defined( 'IS_GUTENBERG_PLUGIN' ) && IS_GUTENBERG_PLUGIN && $should_load_view_script ) { |
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$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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|
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return $content; |
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} |
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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 gutenberg_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' => 'gutenberg_render_block_core_file', |
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) |
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); |
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} |
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add_action( 'init', 'gutenberg_register_block_core_file', 20 ); |
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|
