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5b4af6125a
This changeset introduces functions `wp_get_global_styles_custom_css()` and `wp_enqueue_global_styles_custom_css()`, which allow accessing and enqueuing custom CSS added via global styles. Custom CSS via global styles is handled separately from custom CSS via the Customizer. If a site uses both features, the custom CSS from both sources will be loaded. The global styles custom CSS is then loaded after the Customizer custom CSS, so if there are any conflicts between the rules, the global styles take precedence. Similarly to e.g. [55185], the result is cached in a non-persistent cache, except when `WP_DEBUG` is on to avoid interrupting the theme developer's workflow. Props glendaviesnz, oandregal, ntsekouras, mamaduka, davidbaumwald, hellofromtonya, flixos90. Fixes #57536. Built from https://develop.svn.wordpress.org/trunk@55192 git-svn-id: http://core.svn.wordpress.org/trunk@54725 1a063a9b-81f0-0310-95a4-ce76da25c4cd
429 lines
14 KiB
PHP
429 lines
14 KiB
PHP
<?php
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/**
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* APIs to interact with global settings & styles.
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*
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* @package WordPress
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*/
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/**
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* Gets the settings resulting of merging core, theme, and user data.
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*
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* @since 5.9.0
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*
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* @param array $path Path to the specific setting to retrieve. Optional.
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* If empty, will return all settings.
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* @param array $context {
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* Metadata to know where to retrieve the $path from. Optional.
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*
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* @type string $block_name Which block to retrieve the settings from.
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* If empty, it'll return the settings for the global context.
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* @type string $origin Which origin to take data from.
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* Valid values are 'all' (core, theme, and user) or 'base' (core and theme).
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* If empty or unknown, 'all' is used.
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* }
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* @return array The settings to retrieve.
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*/
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function wp_get_global_settings( $path = array(), $context = array() ) {
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if ( ! empty( $context['block_name'] ) ) {
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$new_path = array( 'blocks', $context['block_name'] );
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foreach ( $path as $subpath ) {
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$new_path[] = $subpath;
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}
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$path = $new_path;
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}
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/*
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* This is the default value when no origin is provided or when it is 'all'.
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*
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* The $origin is used as part of the cache key. Changes here need to account
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* for clearing the cache appropriately.
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*/
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$origin = 'custom';
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if (
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! wp_theme_has_theme_json() ||
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( isset( $context['origin'] ) && 'base' === $context['origin'] )
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) {
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$origin = 'theme';
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}
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/*
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* By using the 'theme_json' group, this data is marked to be non-persistent across requests.
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* See `wp_cache_add_non_persistent_groups` in src/wp-includes/load.php and other places.
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*
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* The rationale for this is to make sure derived data from theme.json
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* is always fresh from the potential modifications done via hooks
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* that can use dynamic data (modify the stylesheet depending on some option,
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* settings depending on user permissions, etc.).
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* See some of the existing hooks to modify theme.json behaviour:
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* https://make.wordpress.org/core/2022/10/10/filters-for-theme-json-data/
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*
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* A different alternative considered was to invalidate the cache upon certain
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* events such as options add/update/delete, user meta, etc.
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* It was judged not enough, hence this approach.
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* See https://github.com/WordPress/gutenberg/pull/45372
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*/
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$cache_group = 'theme_json';
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$cache_key = 'wp_get_global_settings_' . $origin;
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/*
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* Ignore cache when `WP_DEBUG` is enabled, so it doesn't interfere with the theme
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* developer's workflow.
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*
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* @todo Replace `WP_DEBUG` once an "in development mode" check is available in Core.
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*/
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$can_use_cached = ! WP_DEBUG;
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$settings = false;
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if ( $can_use_cached ) {
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$settings = wp_cache_get( $cache_key, $cache_group );
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}
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if ( false === $settings ) {
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$settings = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_settings();
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if ( $can_use_cached ) {
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wp_cache_set( $cache_key, $settings, $cache_group );
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}
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}
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return _wp_array_get( $settings, $path, $settings );
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}
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/**
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* Gets the styles resulting of merging core, theme, and user data.
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*
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* @since 5.9.0
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*
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* @param array $path Path to the specific style to retrieve. Optional.
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* If empty, will return all styles.
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* @param array $context {
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* Metadata to know where to retrieve the $path from. Optional.
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*
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* @type string $block_name Which block to retrieve the styles from.
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* If empty, it'll return the styles for the global context.
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* @type string $origin Which origin to take data from.
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* Valid values are 'all' (core, theme, and user) or 'base' (core and theme).
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* If empty or unknown, 'all' is used.
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* }
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* @return array The styles to retrieve.
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*/
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function wp_get_global_styles( $path = array(), $context = array() ) {
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if ( ! empty( $context['block_name'] ) ) {
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$path = array_merge( array( 'blocks', $context['block_name'] ), $path );
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}
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$origin = 'custom';
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if ( isset( $context['origin'] ) && 'base' === $context['origin'] ) {
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$origin = 'theme';
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}
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$styles = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_raw_data()['styles'];
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return _wp_array_get( $styles, $path, $styles );
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}
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/**
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* Returns the stylesheet resulting of merging core, theme, and user data.
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*
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* @since 5.9.0
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* @since 6.1.0 Added 'base-layout-styles' support.
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*
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* @param array $types Optional. Types of styles to load.
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* It accepts as values 'variables', 'presets', 'styles', 'base-layout-styles'.
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* If empty, it'll load the following:
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* - for themes without theme.json: 'variables', 'presets', 'base-layout-styles'.
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* - for themes with theme.json: 'variables', 'presets', 'styles'.
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* @return string Stylesheet.
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*/
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function wp_get_global_stylesheet( $types = array() ) {
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/*
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* Ignore cache when `WP_DEBUG` is enabled, so it doesn't interfere with the theme
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* developer's workflow.
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*
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* @todo Replace `WP_DEBUG` once an "in development mode" check is available in Core.
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*/
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$can_use_cached = empty( $types ) && ! WP_DEBUG;
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/*
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* By using the 'theme_json' group, this data is marked to be non-persistent across requests.
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* @see `wp_cache_add_non_persistent_groups()`.
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*
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* The rationale for this is to make sure derived data from theme.json
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* is always fresh from the potential modifications done via hooks
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* that can use dynamic data (modify the stylesheet depending on some option,
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* settings depending on user permissions, etc.).
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* See some of the existing hooks to modify theme.json behavior:
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* @see https://make.wordpress.org/core/2022/10/10/filters-for-theme-json-data/
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*
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* A different alternative considered was to invalidate the cache upon certain
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* events such as options add/update/delete, user meta, etc.
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* It was judged not enough, hence this approach.
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* @see https://github.com/WordPress/gutenberg/pull/45372
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*/
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$cache_group = 'theme_json';
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$cache_key = 'wp_get_global_stylesheet';
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if ( $can_use_cached ) {
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$cached = wp_cache_get( $cache_key, $cache_group );
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if ( $cached ) {
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return $cached;
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}
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}
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$tree = WP_Theme_JSON_Resolver::get_merged_data();
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$supports_theme_json = wp_theme_has_theme_json();
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if ( empty( $types ) && ! $supports_theme_json ) {
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$types = array( 'variables', 'presets', 'base-layout-styles' );
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} elseif ( empty( $types ) ) {
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$types = array( 'variables', 'styles', 'presets' );
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}
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/*
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* If variables are part of the stylesheet, then add them.
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* This is so themes without a theme.json still work as before 5.9:
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* they can override the default presets.
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* See https://core.trac.wordpress.org/ticket/54782
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*/
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$styles_variables = '';
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if ( in_array( 'variables', $types, true ) ) {
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/*
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* Only use the default, theme, and custom origins. Why?
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* Because styles for `blocks` origin are added at a later phase
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* (i.e. in the render cycle). Here, only the ones in use are rendered.
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* @see wp_add_global_styles_for_blocks
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*/
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$origins = array( 'default', 'theme', 'custom' );
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$styles_variables = $tree->get_stylesheet( array( 'variables' ), $origins );
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$types = array_diff( $types, array( 'variables' ) );
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}
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/*
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* For the remaining types (presets, styles), we do consider origins:
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*
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* - themes without theme.json: only the classes for the presets defined by core
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* - themes with theme.json: the presets and styles classes, both from core and the theme
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*/
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$styles_rest = '';
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if ( ! empty( $types ) ) {
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/*
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* Only use the default, theme, and custom origins. Why?
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* Because styles for `blocks` origin are added at a later phase
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* (i.e. in the render cycle). Here, only the ones in use are rendered.
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* @see wp_add_global_styles_for_blocks
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*/
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$origins = array( 'default', 'theme', 'custom' );
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if ( ! $supports_theme_json ) {
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$origins = array( 'default' );
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}
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$styles_rest = $tree->get_stylesheet( $types, $origins );
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}
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$stylesheet = $styles_variables . $styles_rest;
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if ( $can_use_cached ) {
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wp_cache_set( $cache_key, $stylesheet, $cache_group );
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}
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return $stylesheet;
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}
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/**
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* Gets the global styles custom css from theme.json.
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*
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* @since 6.2.0
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*
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* @return string Stylesheet.
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*/
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function wp_get_global_styles_custom_css() {
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if ( ! wp_theme_has_theme_json() ) {
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return '';
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}
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/*
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* Ignore cache when `WP_DEBUG` is enabled, so it doesn't interfere with the theme
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* developer's workflow.
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*
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* @todo Replace `WP_DEBUG` once an "in development mode" check is available in Core.
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*/
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$can_use_cached = ! WP_DEBUG;
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/*
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* By using the 'theme_json' group, this data is marked to be non-persistent across requests.
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* @see `wp_cache_add_non_persistent_groups()`.
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*
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* The rationale for this is to make sure derived data from theme.json
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* is always fresh from the potential modifications done via hooks
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* that can use dynamic data (modify the stylesheet depending on some option,
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* settings depending on user permissions, etc.).
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* See some of the existing hooks to modify theme.json behavior:
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* @see https://make.wordpress.org/core/2022/10/10/filters-for-theme-json-data/
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*
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* A different alternative considered was to invalidate the cache upon certain
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* events such as options add/update/delete, user meta, etc.
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* It was judged not enough, hence this approach.
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* @see https://github.com/WordPress/gutenberg/pull/45372
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*/
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$cache_key = 'wp_get_global_styles_custom_css';
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$cache_group = 'theme_json';
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if ( $can_use_cached ) {
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$cached = wp_cache_get( $cache_key, $cache_group );
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if ( $cached ) {
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return $cached;
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}
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}
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$tree = WP_Theme_JSON_Resolver::get_merged_data();
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$stylesheet = $tree->get_custom_css();
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if ( $can_use_cached ) {
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wp_cache_set( $cache_key, $stylesheet, $cache_group );
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}
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return $stylesheet;
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}
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/**
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* Returns a string containing the SVGs to be referenced as filters (duotone).
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*
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* @since 5.9.1
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*
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* @return string
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*/
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function wp_get_global_styles_svg_filters() {
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/*
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* Ignore cache when `WP_DEBUG` is enabled, so it doesn't interfere with the theme
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* developer's workflow.
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*
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* @todo Replace `WP_DEBUG` once an "in development mode" check is available in Core.
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*/
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$can_use_cached = ! WP_DEBUG;
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$cache_group = 'theme_json';
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$cache_key = 'wp_get_global_styles_svg_filters';
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if ( $can_use_cached ) {
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$cached = wp_cache_get( $cache_key, $cache_group );
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if ( $cached ) {
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return $cached;
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}
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}
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$supports_theme_json = wp_theme_has_theme_json();
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$origins = array( 'default', 'theme', 'custom' );
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if ( ! $supports_theme_json ) {
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$origins = array( 'default' );
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}
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$tree = WP_Theme_JSON_Resolver::get_merged_data();
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$svgs = $tree->get_svg_filters( $origins );
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if ( $can_use_cached ) {
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wp_cache_set( $cache_key, $svgs, $cache_group );
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}
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return $svgs;
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}
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/**
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* Adds global style rules to the inline style for each block.
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*
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* @since 6.1.0
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*/
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function wp_add_global_styles_for_blocks() {
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$tree = WP_Theme_JSON_Resolver::get_merged_data();
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$block_nodes = $tree->get_styles_block_nodes();
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foreach ( $block_nodes as $metadata ) {
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$block_css = $tree->get_styles_for_block( $metadata );
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if ( ! wp_should_load_separate_core_block_assets() ) {
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wp_add_inline_style( 'global-styles', $block_css );
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continue;
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}
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$stylesheet_handle = 'global-styles';
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if ( isset( $metadata['name'] ) ) {
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/*
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* These block styles are added on block_render.
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* This hooks inline CSS to them so that they are loaded conditionally
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* based on whether or not the block is used on the page.
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*/
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if ( str_starts_with( $metadata['name'], 'core/' ) ) {
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$block_name = str_replace( 'core/', '', $metadata['name'] );
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$stylesheet_handle = 'wp-block-' . $block_name;
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}
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wp_add_inline_style( $stylesheet_handle, $block_css );
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}
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// The likes of block element styles from theme.json do not have $metadata['name'] set.
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if ( ! isset( $metadata['name'] ) && ! empty( $metadata['path'] ) ) {
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$result = array_values(
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array_filter(
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$metadata['path'],
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function ( $item ) {
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if ( strpos( $item, 'core/' ) !== false ) {
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return true;
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}
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return false;
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}
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)
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);
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if ( isset( $result[0] ) ) {
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if ( str_starts_with( $result[0], 'core/' ) ) {
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$block_name = str_replace( 'core/', '', $result[0] );
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$stylesheet_handle = 'wp-block-' . $block_name;
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}
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wp_add_inline_style( $stylesheet_handle, $block_css );
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}
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}
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}
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}
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/**
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* Checks whether a theme or its parent has a theme.json file.
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*
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* @since 6.2.0
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*
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* @return bool Returns true if theme or its parent has a theme.json file, false otherwise.
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*/
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function wp_theme_has_theme_json() {
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static $theme_has_support = null;
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if (
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null !== $theme_has_support &&
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/*
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* Ignore static cache when `WP_DEBUG` is enabled. Why? To avoid interfering with
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* the theme developer's workflow.
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*
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* @todo Replace `WP_DEBUG` once an "in development mode" check is available in Core.
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*/
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! WP_DEBUG &&
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/*
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* Ignore cache when automated test suites are running. Why? To ensure
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* the static cache is reset between each test.
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*/
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! ( defined( 'WP_RUN_CORE_TESTS' ) && WP_RUN_CORE_TESTS )
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) {
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return $theme_has_support;
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}
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// Does the theme have its own theme.json?
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$theme_has_support = is_readable( get_stylesheet_directory() . '/theme.json' );
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// Look up the parent if the child does not have a theme.json.
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if ( ! $theme_has_support ) {
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$theme_has_support = is_readable( get_template_directory() . '/theme.json' );
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}
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return $theme_has_support;
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}
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/**
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* Cleans the caches under the theme_json group.
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*
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* @since 6.2.0
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*/
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function wp_clean_theme_json_cache() {
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wp_cache_delete( 'wp_get_global_stylesheet', 'theme_json' );
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wp_cache_delete( 'wp_get_global_styles_svg_filters', 'theme_json' );
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wp_cache_delete( 'wp_get_global_settings_custom', 'theme_json' );
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wp_cache_delete( 'wp_get_global_settings_theme', 'theme_json' );
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wp_cache_delete( 'wp_get_global_styles_custom_css', 'theme_json' );
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WP_Theme_JSON_Resolver::clean_cached_data();
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}
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