From a415c29efee45520ae252d2aa28f1083a521cd7b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 09:56:49 +0200
Subject: Adding upstream version 6.4.3+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 wp-includes/blocks/file.php | 100 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 wp-includes/blocks/file.php

(limited to 'wp-includes/blocks/file.php')

diff --git a/wp-includes/blocks/file.php b/wp-includes/blocks/file.php
new file mode 100644
index 0000000..042ea89
--- /dev/null
+++ b/wp-includes/blocks/file.php
@@ -0,0 +1,100 @@
+<?php
+/**
+ * Server-side rendering of the `core/file` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * When the `core/file` block is rendering, check if we need to enqueue the `wp-block-file-view` script.
+ *
+ * @param array    $attributes The block attributes.
+ * @param string   $content    The block content.
+ * @param WP_Block $block      The parsed block.
+ *
+ * @return string Returns the block content.
+ */
+function render_block_core_file( $attributes, $content, $block ) {
+	$should_load_view_script = ! empty( $attributes['displayPreview'] );
+	$view_js_file            = 'wp-block-file-view';
+	// If the script already exists, there is no point in removing it from viewScript.
+	if ( ! wp_script_is( $view_js_file ) ) {
+		$script_handles = $block->block_type->view_script_handles;
+
+		// If the script is not needed, and it is still in the `view_script_handles`, remove it.
+		if ( ! $should_load_view_script && in_array( $view_js_file, $script_handles, true ) ) {
+			$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_js_file ) );
+		}
+		// If the script is needed, but it was previously removed, add it again.
+		if ( $should_load_view_script && ! in_array( $view_js_file, $script_handles, true ) ) {
+			$block->block_type->view_script_handles = array_merge( $script_handles, array( $view_js_file ) );
+		}
+	}
+
+	// Update object's aria-label attribute if present in block HTML.
+
+	// Match an aria-label attribute from an object tag.
+	$pattern = '@<object.+(?<attribute>aria-label="(?<filename>[^"]+)?")@i';
+	$content = preg_replace_callback(
+		$pattern,
+		static function ( $matches ) {
+			$filename     = ! empty( $matches['filename'] ) ? $matches['filename'] : '';
+			$has_filename = ! empty( $filename ) && 'PDF embed' !== $filename;
+			$label        = $has_filename ?
+				sprintf(
+					/* translators: %s: filename. */
+					__( 'Embed of %s.' ),
+					$filename
+				)
+				: __( 'PDF embed' );
+
+			return str_replace( $matches['attribute'], sprintf( 'aria-label="%s"', $label ), $matches[0] );
+		},
+		$content
+	);
+
+	// If it uses the Interactivity API, add the directives.
+	if ( $should_load_view_script ) {
+		$processor = new WP_HTML_Tag_Processor( $content );
+		$processor->next_tag();
+		$processor->set_attribute( 'data-wp-interactive', '' );
+		$processor->next_tag( 'object' );
+		$processor->set_attribute( 'data-wp-bind--hidden', '!selectors.core.file.hasPdfPreview' );
+		$processor->set_attribute( 'hidden', true );
+		return $processor->get_updated_html();
+	}
+
+	return $content;
+}
+
+/**
+ * Ensure that the view script has the `wp-interactivity` dependency.
+ *
+ * @since 6.4.0
+ *
+ * @global WP_Scripts $wp_scripts
+ */
+function block_core_file_ensure_interactivity_dependency() {
+	global $wp_scripts;
+	if (
+		isset( $wp_scripts->registered['wp-block-file-view'] ) &&
+		! in_array( 'wp-interactivity', $wp_scripts->registered['wp-block-file-view']->deps, true )
+	) {
+		$wp_scripts->registered['wp-block-file-view']->deps[] = 'wp-interactivity';
+	}
+}
+
+add_action( 'wp_print_scripts', 'block_core_file_ensure_interactivity_dependency' );
+
+/**
+ * Registers the `core/file` block on server.
+ */
+function register_block_core_file() {
+	register_block_type_from_metadata(
+		__DIR__ . '/file',
+		array(
+			'render_callback' => 'render_block_core_file',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_file' );
-- 
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