init

wp-includes/global-styles-and-settings.php

@@ -0,0 +1,134 @@
+<?php
+/**
+ * APIs to interact with global settings & styles.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Function to get the settings resulting of merging core, theme, and user data.
+ *
+ * @since 5.9.0
+ *
+ * @param array $path    Path to the specific setting to retrieve. Optional.
+ *                       If empty, will return all settings.
+ * @param array $context {
+ *     Metadata to know where to retrieve the $path from. Optional.
+ *
+ *     @type string $block_name Which block to retrieve the settings from.
+ *                              If empty, it'll return the settings for the global context.
+ *     @type string $origin     Which origin to take data from.
+ *                              Valid values are 'all' (core, theme, and user) or 'base' (core and theme).
+ *                              If empty or unknown, 'all' is used.
+ * }
+ *
+ * @return array The settings to retrieve.
+ */
+function wp_get_global_settings( $path = array(), $context = array() ) {
+	if ( ! empty( $context['block_name'] ) ) {
+		$path = array_merge( array( 'blocks', $context['block_name'] ), $path );
+	}
+
+	$origin = 'custom';
+	if ( isset( $context['origin'] ) && 'base' === $context['origin'] ) {
+		$origin = 'theme';
+	}
+
+	$settings = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_settings();
+
+	return _wp_array_get( $settings, $path, $settings );
+}
+
+/**
+ * Function to get the styles resulting of merging core, theme, and user data.
+ *
+ * @since 5.9.0
+ *
+ * @param array $path    Path to the specific style to retrieve. Optional.
+ *                       If empty, will return all styles.
+ * @param array $context {
+ *     Metadata to know where to retrieve the $path from. Optional.
+ *
+ *     @type string $block_name Which block to retrieve the styles from.
+ *                              If empty, it'll return the styles for the global context.
+ *     @type string $origin     Which origin to take data from.
+ *                              Valid values are 'all' (core, theme, and user) or 'base' (core and theme).
+ *                              If empty or unknown, 'all' is used.
+ * }
+ *
+ * @return array The styles to retrieve.
+ */
+function wp_get_global_styles( $path = array(), $context = array() ) {
+	if ( ! empty( $context['block_name'] ) ) {
+		$path = array_merge( array( 'blocks', $context['block_name'] ), $path );
+	}
+
+	$origin = 'custom';
+	if ( isset( $context['origin'] ) && 'base' === $context['origin'] ) {
+		$origin = 'theme';
+	}
+
+	$styles = WP_Theme_JSON_Resolver::get_merged_data( $origin )->get_raw_data()['styles'];
+
+	return _wp_array_get( $styles, $path, $styles );
+}
+
+/**
+ * Returns the stylesheet resulting of merging core, theme, and user data.
+ *
+ * @since 5.9.0
+ *
+ * @param array $types Types of styles to load. Optional.
+ *                     It accepts 'variables', 'styles', 'presets' as values.
+ *                     If empty, it'll load all for themes with theme.json support
+ *                     and only [ 'variables', 'presets' ] for themes without theme.json support.
+ *
+ * @return string Stylesheet.
+ */
+function wp_get_global_stylesheet( $types = array() ) {
+	// Return cached value if it can be used and exists.
+	// It's cached by theme to make sure that theme switching clears the cache.
+	$can_use_cached = (
+		( empty( $types ) ) &&
+		( ! defined( 'WP_DEBUG' ) || ! WP_DEBUG ) &&
+		( ! defined( 'SCRIPT_DEBUG' ) || ! SCRIPT_DEBUG ) &&
+		( ! defined( 'REST_REQUEST' ) || ! REST_REQUEST ) &&
+		! is_admin()
+	);
+	$transient_name = 'global_styles_' . get_stylesheet();
+	if ( $can_use_cached ) {
+		$cached = get_transient( $transient_name );
+		if ( $cached ) {
+			return $cached;
+		}
+	}
+
+	$supports_theme_json = WP_Theme_JSON_Resolver::theme_has_support();
+	$supports_link_color = get_theme_support( 'experimental-link-color' );
+	if ( empty( $types ) && ! $supports_theme_json ) {
+		$types = array( 'variables', 'presets' );
+	} elseif ( empty( $types ) ) {
+		$types = array( 'variables', 'styles', 'presets' );
+	}
+
+	$origins = array( 'default', 'theme', 'custom' );
+	if ( ! $supports_theme_json && ! $supports_link_color ) {
+		// In this case we only enqueue the core presets (CSS Custom Properties + the classes).
+		$origins = array( 'default' );
+	} elseif ( ! $supports_theme_json && $supports_link_color ) {
+		// For the legacy link color feature to work, the CSS Custom Properties
+		// should be in scope (either the core or the theme ones).
+		$origins = array( 'default', 'theme' );
+	}
+
+	$tree       = WP_Theme_JSON_Resolver::get_merged_data();
+	$stylesheet = $tree->get_stylesheet( $types, $origins );
+
+	if ( $can_use_cached ) {
+		// Cache for a minute.
+		// This cache doesn't need to be any longer, we only want to avoid spikes on high-traffic sites.
+		set_transient( $transient_name, $stylesheet, MINUTE_IN_SECONDS );
+	}
+
+	return $stylesheet;
+}