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Fix: Global styles for non-core blocks aren't loaded on the front end #44053

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Fix: Global styles for non-core blocks aren't loaded on the front end #44053

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31 changes: 25 additions & 6 deletions lib/compat/wordpress-6.1/get-global-styles-and-settings.php
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Original file line number Diff line number Diff line change
Expand Up @@ -9,22 +9,34 @@
* Adds global style rules to the inline style for each block.
*/
function wp_add_global_styles_for_blocks() {
global $wp_styles;

// Default to "global-styles".
$default_handle = 'global-styles';

$tree = WP_Theme_JSON_Resolver_Gutenberg::get_merged_data();
$block_nodes = $tree->get_styles_block_nodes();

foreach ( $block_nodes as $metadata ) {
$block_css = $tree->get_styles_for_block( $metadata );

if ( ! wp_should_load_separate_core_block_assets() ) {
wp_add_inline_style( 'global-styles', $block_css );
wp_add_inline_style( $default_handle, $block_css );
continue;
}

if ( isset( $metadata['name'] ) ) {
$block_name = str_replace( 'core/', '', $metadata['name'] );
$handle = $default_handle;
$block_stylesheet_handle = generate_block_asset_handle( $metadata['name'], 'style' );

if ( isset( $wp_styles->registered[ $block_stylesheet_handle ] ) ) {
$handle = $block_stylesheet_handle;
}

// These block styles are added on block_render.
// This hooks inline CSS to them so that they are loaded conditionally
// based on whether or not the block is used on the page.
wp_add_inline_style( 'wp-block-' . $block_name, $block_css );
wp_add_inline_style( $handle, $block_css );
}

// The likes of block element styles from theme.json do not have $metadata['name'] set.
Expand All @@ -33,16 +45,23 @@ function wp_add_global_styles_for_blocks() {
array_filter(
$metadata['path'],
function ( $item ) {
if ( str_contains( $item, 'core/' ) ) {
if ( str_contains( $item, '/' ) ) {
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I think to check only slashes is the only way to include non-core blocks, is there a better approach?

return true;
}
return false;
}
)
);

if ( isset( $result[0] ) ) {
$block_name = str_replace( 'core/', '', $result[0] );
wp_add_inline_style( 'wp-block-' . $block_name, $block_css );
$handle = $default_handle;
$block_stylesheet_handle = generate_block_asset_handle( $result['0'], 'style' );

if ( isset( $wp_styles->registered[ $block_stylesheet_handle ] ) ) {
$handle = $block_stylesheet_handle;
}

wp_add_inline_style( $handle, $block_css );
}
}
}
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