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190 lines
7.0 KiB
190 lines
7.0 KiB
9 months ago
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<?php
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/**
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* Style engine: Public functions
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*
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* This file contains a variety of public functions developers can use to interact with
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* the Style Engine API.
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*
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* @package WordPress
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* @subpackage StyleEngine
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* @since 6.1.0
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*/
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/**
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* Global public interface method to generate styles from a single style object,
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* e.g. the value of a block's attributes.style object or the top level styles in theme.json.
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*
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* Example usage:
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*
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* $styles = wp_style_engine_get_styles(
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* array(
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* 'color' => array( 'text' => '#cccccc' ),
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* )
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* );
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*
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* Returns:
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*
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* array(
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* 'css' => 'color: #cccccc',
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* 'declarations' => array( 'color' => '#cccccc' ),
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* 'classnames' => 'has-color',
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* )
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*
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* @since 6.1.0
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*
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* @see https://developer.wordpress.org/block-editor/reference-guides/theme-json-reference/theme-json-living/#styles
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* @see https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/
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*
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* @param array $block_styles The style object.
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* @param array $options {
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* Optional. An array of options. Default empty array.
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*
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* @type string|null $context An identifier describing the origin of the style object,
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* e.g. 'block-supports' or 'global-styles'. Default null.
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* When set, the style engine will attempt to store the CSS rules,
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* where a selector is also passed.
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* @type bool $convert_vars_to_classnames Whether to skip converting incoming CSS var patterns,
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* e.g. `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`,
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* to `var( --wp--preset--* )` values. Default false.
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* @type string $selector Optional. When a selector is passed,
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* the value of `$css` in the return value will comprise
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* a full CSS rule `$selector { ...$css_declarations }`,
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* otherwise, the value will be a concatenated string
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* of CSS declarations.
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* }
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* @return array {
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* @type string $css A CSS ruleset or declarations block
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* formatted to be placed in an HTML `style` attribute or tag.
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* @type string[] $declarations An associative array of CSS definitions,
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* e.g. `array( "$property" => "$value", "$property" => "$value" )`.
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* @type string $classnames Classnames separated by a space.
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* }
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*/
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function wp_style_engine_get_styles( $block_styles, $options = array() ) {
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$options = wp_parse_args(
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$options,
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array(
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'selector' => null,
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'context' => null,
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'convert_vars_to_classnames' => false,
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)
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);
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$parsed_styles = WP_Style_Engine::parse_block_styles( $block_styles, $options );
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// Output.
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$styles_output = array();
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if ( ! empty( $parsed_styles['declarations'] ) ) {
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$styles_output['css'] = WP_Style_Engine::compile_css( $parsed_styles['declarations'], $options['selector'] );
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$styles_output['declarations'] = $parsed_styles['declarations'];
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if ( ! empty( $options['context'] ) ) {
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WP_Style_Engine::store_css_rule( $options['context'], $options['selector'], $parsed_styles['declarations'] );
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}
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}
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if ( ! empty( $parsed_styles['classnames'] ) ) {
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$styles_output['classnames'] = implode( ' ', array_unique( $parsed_styles['classnames'] ) );
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}
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return array_filter( $styles_output );
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}
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/**
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* Returns compiled CSS from a collection of selectors and declarations.
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* Useful for returning a compiled stylesheet from any collection of CSS selector + declarations.
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*
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* Example usage:
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*
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* $css_rules = array(
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* array(
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* 'selector' => '.elephant-are-cool',
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* 'declarations' => array(
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* 'color' => 'gray',
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* 'width' => '3em',
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* ),
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* ),
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* );
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*
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* $css = wp_style_engine_get_stylesheet_from_css_rules( $css_rules );
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*
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* Returns:
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*
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* .elephant-are-cool{color:gray;width:3em}
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*
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* @since 6.1.0
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*
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* @param array $css_rules {
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* Required. A collection of CSS rules.
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*
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* @type array ...$0 {
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* @type string $selector A CSS selector.
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* @type string[] $declarations An associative array of CSS definitions,
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* e.g. `array( "$property" => "$value", "$property" => "$value" )`.
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* }
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* }
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* @param array $options {
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* Optional. An array of options. Default empty array.
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*
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* @type string|null $context An identifier describing the origin of the style object,
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* e.g. 'block-supports' or 'global-styles'. Default 'block-supports'.
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* When set, the style engine will attempt to store the CSS rules.
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* @type bool $optimize Whether to optimize the CSS output, e.g. combine rules.
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* Default false.
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* @type bool $prettify Whether to add new lines and indents to output.
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* Defaults to whether the `SCRIPT_DEBUG` constant is defined.
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* }
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* @return string A string of compiled CSS declarations, or empty string.
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*/
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function wp_style_engine_get_stylesheet_from_css_rules( $css_rules, $options = array() ) {
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if ( empty( $css_rules ) ) {
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return '';
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}
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$options = wp_parse_args(
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$options,
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array(
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'context' => null,
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)
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);
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$css_rule_objects = array();
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foreach ( $css_rules as $css_rule ) {
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if ( empty( $css_rule['selector'] ) || empty( $css_rule['declarations'] ) || ! is_array( $css_rule['declarations'] ) ) {
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continue;
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}
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if ( ! empty( $options['context'] ) ) {
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WP_Style_Engine::store_css_rule( $options['context'], $css_rule['selector'], $css_rule['declarations'] );
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}
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$css_rule_objects[] = new WP_Style_Engine_CSS_Rule( $css_rule['selector'], $css_rule['declarations'] );
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}
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if ( empty( $css_rule_objects ) ) {
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return '';
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}
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return WP_Style_Engine::compile_stylesheet_from_css_rules( $css_rule_objects, $options );
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}
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/**
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* Returns compiled CSS from a store, if found.
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*
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* @since 6.1.0
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*
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* @param string $context A valid context name, corresponding to an existing store key.
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* @param array $options {
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* Optional. An array of options. Default empty array.
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*
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* @type bool $optimize Whether to optimize the CSS output, e.g. combine rules.
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* Default false.
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* @type bool $prettify Whether to add new lines and indents to output.
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* Defaults to whether the `SCRIPT_DEBUG` constant is defined.
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* }
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* @return string A compiled CSS string.
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*/
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function wp_style_engine_get_stylesheet_from_context( $context, $options = array() ) {
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return WP_Style_Engine::compile_stylesheet_from_css_rules( WP_Style_Engine::get_store( $context )->get_all_rules(), $options );
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}
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