Changeset 55235 for trunk/src/wp-includes/block-supports/elements.php

Timestamp:

02/06/2023 07:41:25 PM (3 years ago)

Author:

flixos90

Message:

Editor: Use WP_HTML_Tag_Processor in wp_render_elements_support().

Props ntsekouras.
Fixes #57642.

File:

• trunk/src/wp-includes/block-supports/elements.php (modified) (1 diff)

trunk/src/wp-includes/block-supports/elements.php

@@ -57 +57 @@
     }
 
-    $class_name = wp_get_elements_class_name( $block );
-
     // Like the layout hook this assumes the hook only applies to blocks with a single wrapper.
-    // Retrieve the opening tag of the first HTML element.
-    $html_element_matches = array();
-    preg_match( '/<[^>]+>/', $block_content, $html_element_matches, PREG_OFFSET_CAPTURE );
-    $first_element = $html_element_matches[0][0];
-    // If the first HTML element has a class attribute just add the new class
-    // as we do on layout and duotone.
-    if ( strpos( $first_element, 'class="' ) !== false ) {
-        $content = preg_replace(
-            '/' . preg_quote( 'class="', '/' ) . '/',
-            'class="' . $class_name . ' ',
-            $block_content,
-            1
-        );
-    } else {
-        // If the first HTML element has no class attribute we should inject the attribute before the attribute at the end.
-        $first_element_offset = $html_element_matches[0][1];
-        $content              = substr_replace( $block_content, ' class="' . $class_name . '"', $first_element_offset + strlen( $first_element ) - 1, 0 );
+    // Add the class name to the first element, presuming it's the wrapper, if it exists.
+    $tags = new WP_HTML_Tag_Processor( $block_content );
+    if ( $tags->next_tag() ) {
+        $tags->add_class( wp_get_elements_class_name( $block ) );
     }
 
-    return $content;
+    return $tags->get_updated_html();
 }