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<title>[58170] trunk: Editor: add column and row spans to grid children.</title>
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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/58170">58170</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/58170","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>isabel_brison</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-05-18 20:30:57 +0000 (Sat, 18 May 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'>Editor: add column and row spans to grid children.

Adds support for setting spans using `grid-column` and `grid-row` properties on children of blocks with grid layout.

Props isabel_brison, andrewserong, peterwilsoncc, mukesh27.
Fixes <a href="https://core.trac.wordpress.org/ticket/61111">#61111</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesblocksupportslayoutphp">trunk/src/wp-includes/block-supports/layout.php</a></li>
<li><a href="#trunksrcwpincludesksesphp">trunk/src/wp-includes/kses.php</a></li>
<li><a href="#trunktestsphpunittestsblocksupportslayoutphp">trunk/tests/phpunit/tests/block-supports/layout.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesblocksupportslayoutphp"></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/layout.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/block-supports/layout.php   2024-05-18 18:20:19 UTC (rev 58169)
+++ trunk/src/wp-includes/block-supports/layout.php     2024-05-18 20:30:57 UTC (rev 58170)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -489,7 +489,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        $layout_styles[] = array(
</span><span class="cx" style="display: block; padding: 0 10px">                                'selector'     => $selector,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                'declarations' => array( 'grid-template-columns' => 'repeat(auto-fill, minmax(min(' . $minimum_column_width . ', 100%), 1fr))' ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         'declarations' => array(
+                                       'grid-template-columns' => 'repeat(auto-fill, minmax(min(' . $minimum_column_width . ', 100%), 1fr))',
+                                       'container-type'        => 'inline-size',
+                               ),
</ins><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><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -555,37 +558,92 @@
</span><span class="cx" style="display: block; padding: 0 10px"> function wp_render_layout_support_flag( $block_content, $block ) {
</span><span class="cx" style="display: block; padding: 0 10px">        $block_type            = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
</span><span class="cx" style="display: block; padding: 0 10px">        $block_supports_layout = block_has_support( $block_type, 'layout', false ) || block_has_support( $block_type, '__experimentalLayout', false );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        $layout_from_parent    = isset( $block['attrs']['style']['layout']['selfStretch'] ) ? $block['attrs']['style']['layout']['selfStretch'] : null;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $child_layout          = isset( $block['attrs']['style']['layout'] ) ? $block['attrs']['style']['layout'] : null;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( ! $block_supports_layout && ! $layout_from_parent ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( ! $block_supports_layout && ! $child_layout ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 return $block_content;
</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">        $outer_class_names = array();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        if ( 'fixed' === $layout_from_parent || 'fill' === $layout_from_parent ) {
-               $container_content_class = wp_unique_id( 'wp-container-content-' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Child layout specific logic.
+       if ( $child_layout ) {
+               $container_content_class   = wp_unique_prefixed_id( 'wp-container-content-' );
+               $child_layout_declarations = array();
+               $child_layout_styles       = array();
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $child_layout_styles = array();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $self_stretch = isset( $child_layout['selfStretch'] ) ? $child_layout['selfStretch'] : null;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( 'fixed' === $layout_from_parent && isset( $block['attrs']['style']['layout']['flexSize'] ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( 'fixed' === $self_stretch && isset( $child_layout['flexSize'] ) ) {
+                       $child_layout_declarations['flex-basis'] = $child_layout['flexSize'];
+                       $child_layout_declarations['box-sizing'] = 'border-box';
+               } elseif ( 'fill' === $self_stretch ) {
+                       $child_layout_declarations['flex-grow'] = '1';
+               }
+
+               if ( isset( $child_layout['columnSpan'] ) ) {
+                       $column_span                              = $child_layout['columnSpan'];
+                       $child_layout_declarations['grid-column'] = "span $column_span";
+               }
+               if ( isset( $child_layout['rowSpan'] ) ) {
+                       $row_span                              = $child_layout['rowSpan'];
+                       $child_layout_declarations['grid-row'] = "span $row_span";
+               }
+               $child_layout_styles[] = array(
+                       'selector'     => ".$container_content_class",
+                       'declarations' => $child_layout_declarations,
+               );
+
+               /*
+                * If columnSpan is set, and the parent grid is responsive, i.e. if it has a minimumColumnWidth set,
+                * the columnSpan should be removed on small grids. If there's a minimumColumnWidth, the grid is responsive.
+                * But if the minimumColumnWidth value wasn't changed, it won't be set. In that case, if columnCount doesn't
+                * exist, we can assume that the grid is responsive.
+                */
+               if ( isset( $child_layout['columnSpan'] ) && ( isset( $block['parentLayout']['minimumColumnWidth'] ) || ! isset( $block['parentLayout']['columnCount'] ) ) ) {
+                       $column_span_number  = floatval( $child_layout['columnSpan'] );
+                       $parent_column_width = isset( $block['parentLayout']['minimumColumnWidth'] ) ? $block['parentLayout']['minimumColumnWidth'] : '12rem';
+                       $parent_column_value = floatval( $parent_column_width );
+                       $parent_column_unit  = explode( $parent_column_value, $parent_column_width );
+
+                       /*
+                        * If there is no unit, the width has somehow been mangled so we reset both unit and value
+                        * to defaults.
+                        * Additionally, the unit should be one of px, rem or em, so that also needs to be checked.
+                        */
+                       if ( count( $parent_column_unit ) <= 1 ) {
+                               $parent_column_unit  = 'rem';
+                               $parent_column_value = 12;
+                       } else {
+                               $parent_column_unit = $parent_column_unit[1];
+
+                               if ( ! in_array( $parent_column_unit, array( 'px', 'rem', 'em' ), true ) ) {
+                                       $parent_column_unit = 'rem';
+                               }
+                       }
+
+                       /*
+                        * A default gap value is used for this computation because custom gap values may not be
+                        * viable to use in the computation of the container query value.
+                        */
+                       $default_gap_value     = 'px' === $parent_column_unit ? 24 : 1.5;
+                       $container_query_value = $column_span_number * $parent_column_value + ( $column_span_number - 1 ) * $default_gap_value;
+                       $container_query_value = $container_query_value . $parent_column_unit;
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         $child_layout_styles[] = array(
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                'rules_group'  => "@container (max-width: $container_query_value )",
</ins><span class="cx" style="display: block; padding: 0 10px">                                 'selector'     => ".$container_content_class",
</span><span class="cx" style="display: block; padding: 0 10px">                                'declarations' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        'flex-basis' => $block['attrs']['style']['layout']['flexSize'],
-                                       'box-sizing' => 'border-box',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 'grid-column' => '1/-1',
</ins><span class="cx" style="display: block; padding: 0 10px">                                 ),
</span><span class="cx" style="display: block; padding: 0 10px">                        );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                } elseif ( 'fill' === $layout_from_parent ) {
-                       $child_layout_styles[] = array(
-                               'selector'     => ".$container_content_class",
-                               'declarations' => array(
-                                       'flex-grow' => '1',
-                               ),
-                       );
</del><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                wp_style_engine_get_stylesheet_from_css_rules(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         /*
+                * Add to the style engine store to enqueue and render layout styles.
+                * Return styles here just to check if any exist.
+                */
+               $child_css = wp_style_engine_get_stylesheet_from_css_rules(
</ins><span class="cx" style="display: block; padding: 0 10px">                         $child_layout_styles,
</span><span class="cx" style="display: block; padding: 0 10px">                        array(
</span><span class="cx" style="display: block; padding: 0 10px">                                'context'  => 'block-supports',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -593,7 +651,9 @@
</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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $outer_class_names[] = $container_content_class;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( $child_css ) {
+                       $outer_class_names[] = $container_content_class;
+               }
</ins><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">        // Prep the processor for modifying the block output.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -851,6 +911,27 @@
</span><span class="cx" style="display: block; padding: 0 10px">        return $processor->get_updated_html();
</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">+/**
+ * Check if the parent block exists and if it has a layout attribute.
+ * If it does, add the parent layout to the parsed block
+ *
+ * @since 6.6.0
+ * @access private
+ *
+ * @param array    $parsed_block The parsed block.
+ * @param array    $source_block The source block.
+ * @param WP_Block $parent_block The parent block.
+ * @return array The parsed block with parent layout attribute if it exists.
+ */
+function wp_add_parent_layout_to_parsed_block( $parsed_block, $source_block, $parent_block ) {
+       if ( $parent_block && isset( $parent_block->parsed_block['attrs']['layout'] ) ) {
+               $parsed_block['parentLayout'] = $parent_block->parsed_block['attrs']['layout'];
+       }
+       return $parsed_block;
+}
+
+add_filter( 'render_block_data', 'wp_add_parent_layout_to_parsed_block', 10, 3 );
+
</ins><span class="cx" style="display: block; padding: 0 10px"> // Register the block support.
</span><span class="cx" style="display: block; padding: 0 10px"> WP_Block_Supports::get_instance()->register(
</span><span class="cx" style="display: block; padding: 0 10px">        'layout',
</span></span></pre></div>
<a id="trunksrcwpincludesksesphp"></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/kses.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/kses.php    2024-05-18 18:20:19 UTC (rev 58169)
+++ trunk/src/wp-includes/kses.php      2024-05-18 20:30:57 UTC (rev 58170)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2441,11 +2441,13 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-auto-columns',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-column-start',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-column-end',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'grid-column',
</ins><span class="cx" style="display: block; padding: 0 10px">                         'grid-column-gap',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-template-rows',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-auto-rows',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-row-start',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-row-end',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'grid-row',
</ins><span class="cx" style="display: block; padding: 0 10px">                         'grid-row-gap',
</span><span class="cx" style="display: block; padding: 0 10px">                        'grid-gap',
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2475,6 +2477,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'z-index',
</span><span class="cx" style="display: block; padding: 0 10px">                        'box-shadow',
</span><span class="cx" style="display: block; padding: 0 10px">                        'aspect-ratio',
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'container-type',
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        // Custom CSS properties.
</span><span class="cx" style="display: block; padding: 0 10px">                        '--*',
</span></span></pre></div>
<a id="trunktestsphpunittestsblocksupportslayoutphp"></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/layout.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/block-supports/layout.php       2024-05-18 18:20:19 UTC (rev 58169)
+++ trunk/tests/phpunit/tests/block-supports/layout.php 2024-05-18 20:30:57 UTC (rev 58170)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -172,6 +172,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @ticket 57584
</span><span class="cx" style="display: block; padding: 0 10px">         * @ticket 58548
</span><span class="cx" style="display: block; padding: 0 10px">         * @ticket 60292
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * @ticket 61111
</ins><span class="cx" style="display: block; padding: 0 10px">          *
</span><span class="cx" style="display: block; padding: 0 10px">         * @dataProvider data_layout_support_flag_renders_classnames_on_wrapper
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -181,6 +182,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">         * @param string $expected_output The expected output.
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        public function test_layout_support_flag_renders_classnames_on_wrapper( $args, $expected_output ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                switch_theme( 'default' );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $actual_output = wp_render_layout_support_flag( $args['block_content'], $args['block'] );
</span><span class="cx" style="display: block; padding: 0 10px">                $this->assertSame( $expected_output, $actual_output );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -251,6 +253,27 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                ),
</span><span class="cx" style="display: block; padding: 0 10px">                                'expected_output' => '<div class="wp-block-group"><div class="wp-block-group__inner-wrapper is-layout-flow wp-block-group-is-layout-flow"></div></div>',
</span><span class="cx" style="display: block; padding: 0 10px">                        ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'block with child layout'                      => array(
+                               'args'            => array(
+                                       'block_content' => '<p>Some text.</p>',
+                                       'block'         => array(
+                                               'blockName'    => 'core/paragraph',
+                                               'attrs'        => array(
+                                                       'style' => array(
+                                                               'layout' => array(
+                                                                       'columnSpan' => '2',
+                                                               ),
+                                                       ),
+                                               ),
+                                               'innerBlocks'  => array(),
+                                               'innerHTML'    => '<p>Some text.</p>',
+                                               'innerContent' => array(
+                                                       '<p>Some text.</p>',
+                                               ),
+                                       ),
+                               ),
+                               'expected_output' => '<p class="wp-container-content-1">Some text.</p>', // The generated classname number assumes `wp_unique_prefixed_id( 'wp-container-content-' )` will not have run previously in this test.
+                       ),
</ins><span class="cx" style="display: block; padding: 0 10px">                         'skip classname output if block does not support layout and there are no child layout classes to be output' => array(
</span><span class="cx" style="display: block; padding: 0 10px">                                'args'            => array(
</span><span class="cx" style="display: block; padding: 0 10px">                                        'block_content' => '<p>A paragraph</p>',
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -362,4 +385,81 @@
</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">+
+       /**
+        * Checks that `wp_add_parent_layout_to_parsed_block` adds the parent layout attribute to the block object.
+        *
+        * @ticket 61111
+        *
+        * @covers ::wp_add_parent_layout_to_parsed_block
+        *
+        * @dataProvider data_wp_add_parent_layout_to_parsed_block
+        *
+        * @param array    $block        The block object.
+        * @param WP_Block $parent_block The parent block object.
+        * @param array    $expected     The expected block object.
+        */
+       public function test_wp_add_parent_layout_to_parsed_block( $block, $parent_block, $expected ) {
+               $actual = wp_add_parent_layout_to_parsed_block( $block, array(), $parent_block );
+               $this->assertSame( $expected, $actual );
+       }
+
+       /**
+        * Data provider for test_wp_add_parent_layout_to_parsed_block.
+        *
+        * @return array
+        */
+       public function data_wp_add_parent_layout_to_parsed_block() {
+               return array(
+                       'block with no parent layout' => array(
+                               'block'        => array(
+                                       'blockName' => 'core/group',
+                                       'attrs'     => array(
+                                               'layout' => array(
+                                                       'type' => 'default',
+                                               ),
+                                       ),
+                               ),
+                               'parent_block' => array(),
+                               'expected'     => array(
+                                       'blockName' => 'core/group',
+                                       'attrs'     => array(
+                                               'layout' => array(
+                                                       'type' => 'default',
+                                               ),
+                                       ),
+                               ),
+                       ),
+                       'block with parent layout'    => array(
+                               'block'        => array(
+                                       'blockName' => 'core/group',
+                                       'attrs'     => array(
+                                               'layout' => array(
+                                                       'type' => 'default',
+                                               ),
+                                       ),
+                               ),
+                               'parent_block' => new WP_Block(
+                                       array(
+                                               'attrs' => array(
+                                                       'layout' => array(
+                                                               'type' => 'grid',
+                                                       ),
+                                               ),
+                                       )
+                               ),
+                               'expected'     => array(
+                                       'blockName'    => 'core/group',
+                                       'attrs'        => array(
+                                               'layout' => array(
+                                                       'type' => 'default',
+                                               ),
+                                       ),
+                                       'parentLayout' => array(
+                                               'type' => 'grid',
+                                       ),
+                               ),
+                       ),
+               );
+       }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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</div>

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