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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/58691">58691</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/58691","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>ellatrix</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-07-09 10:22:10 +0000 (Tue, 09 Jul 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Section Styles: Fix ref values within block style variations.

Fixes <a href="https://core.trac.wordpress.org/ticket/61589">#61589</a>.
Fixes https://github.com/WordPress/wordpress-develop/pull/6989.
See https://github.com/WordPress/gutenberg/pull/63172.

Props aaronrobertshaw, andrewserong, ramonopoly.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesblocksupportsblockstylevariationsphp">trunk/src/wp-includes/block-supports/block-style-variations.php</a></li>
<li><a href="#trunktestsphpunittestsblocksupportsblockstylevariationsphp">trunk/tests/phpunit/tests/block-supports/block-style-variations.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesblocksupportsblockstylevariationsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/block-supports/block-style-variations.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/block-supports/block-style-variations.php   2024-07-09 10:00:48 UTC (rev 58690)
+++ trunk/src/wp-includes/block-supports/block-style-variations.php     2024-07-09 10:22:10 UTC (rev 58691)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -41,6 +41,42 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Recursively resolves any `ref` values within a block style variation's data.
+ *
+ * @since 6.6.0
+ * @access private
+ *
+ * @param array $variation_data Reference to the variation data being processed.
+ * @param array $theme_json     Theme.json data to retrieve referenced values from.
+ */
+function wp_resolve_block_style_variation_ref_values( &$variation_data, $theme_json ) {
+       foreach ( $variation_data as $key => &$value ) {
+               // Only need to potentially process arrays.
+               if ( is_array( $value ) ) {
+                       // If ref value is set, attempt to find its matching value and update it.
+                       if ( array_key_exists( 'ref', $value ) ) {
+                               // Clean up any invalid ref value.
+                               if ( empty( $value['ref'] ) || ! is_string( $value['ref'] ) ) {
+                                       unset( $variation_data[ $key ] );
+                               }
+
+                               $value_path = explode( '.', $value['ref'] ?? '' );
+                               $ref_value  = _wp_array_get( $theme_json, $value_path );
+
+                               // Only update the current value if the referenced path matched a value.
+                               if ( null === $ref_value ) {
+                                       unset( $variation_data[ $key ] );
+                               } else {
+                                       $value = $ref_value;
+                               }
+                       } else {
+                               // Recursively look for ref instances.
+                               wp_resolve_block_style_variation_ref_values( $value, $theme_json );
+                       }
+               }
+       }
+}
+/**
</ins><span class="cx" style="display: block; padding: 0 10px">  * Render the block style variation's styles.
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * In the case of nested blocks with variations applied, we want the parent
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -82,6 +118,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                return $parsed_block;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        /*
+        * Recursively resolve any ref values with the appropriate value within the
+        * theme_json data.
+        */
+       wp_resolve_block_style_variation_ref_values( $variation_data, $theme_json );
+
</ins><span class="cx" style="display: block; padding: 0 10px">         $variation_instance = wp_create_block_style_variation_instance_name( $parsed_block, $variation );
</span><span class="cx" style="display: block; padding: 0 10px">        $class_name         = "is-style-$variation_instance";
</span><span class="cx" style="display: block; padding: 0 10px">        $updated_class_name = $parsed_block['attrs']['className'] . " $class_name";
</span></span></pre></div>
<a id="trunktestsphpunittestsblocksupportsblockstylevariationsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/block-supports/block-style-variations.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/block-supports/block-style-variations.php       2024-07-09 10:00:48 UTC (rev 58690)
+++ trunk/tests/phpunit/tests/block-supports/block-style-variations.php 2024-07-09 10:22:10 UTC (rev 58691)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -159,4 +159,78 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertSameSetsWithIndex( $expected, $group_styles, 'Variation data does not match' );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+       /**
+        * Tests that block style variations resolve any `ref` values when generating styles.
+        *
+        * @ticket 61589
+        */
+       public function test_block_style_variation_ref_values() {
+               switch_theme( 'block-theme' );
+
+               $variation_data = array(
+                       'color'    => array(
+                               'text'       => array(
+                                       'ref' => 'styles.does-not-exist',
+                               ),
+                               'background' => array(
+                                       'ref' => 'styles.blocks.core/group.variations.block-style-variation-a.color.text',
+                               ),
+                       ),
+                       'blocks'   => array(
+                               'core/heading' => array(
+                                       'color' => array(
+                                               'text'       => array(
+                                                       'ref' => 'styles.blocks.core/group.variations.block-style-variation-a.color.background',
+                                               ),
+                                               'background' => array(
+                                                       'ref' => '',
+                                               ),
+                                       ),
+                               ),
+                       ),
+                       'elements' => array(
+                               'link' => array(
+                                       'color'  => array(
+                                               'text'       => array(
+                                                       'ref' => 'styles.blocks.core/group.variations.block-style-variation-b.color.text',
+                                               ),
+                                               'background' => array(
+                                                       'ref' => null,
+                                               ),
+                                       ),
+                                       ':hover' => array(
+                                               'color' => array(
+                                                       'text' => array(
+                                                               'ref' => 'styles.blocks.core/group.variations.block-style-variation-b.color.background',
+                                                       ),
+                                               ),
+                                       ),
+                               ),
+                       ),
+               );
+
+               $theme_json = WP_Theme_JSON_Resolver::get_theme_data()->get_raw_data();
+
+               wp_resolve_block_style_variation_ref_values( $variation_data, $theme_json );
+
+               $expected = array(
+                       'color'    => array( 'background' => 'plum' ),
+                       'blocks'   => array(
+                               'core/heading' => array(
+                                       'color' => array( 'text' => 'indigo' ),
+                               ),
+                       ),
+                       'elements' => array(
+                               'link' => array(
+                                       'color'  => array( 'text' => 'lightblue' ),
+                                       ':hover' => array(
+                                               'color' => array( 'text' => 'midnightblue' ),
+                                       ),
+                               ),
+                       ),
+               );
+
+               $this->assertSameSetsWithIndex( $expected, $variation_data, 'Variation data with resolved ref values does not match' );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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