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Edit File : style-engine.php \| Size : 7.39 KB
<?php /** * Style engine: Public functions * * This file contains a variety of public functions developers can use to interact with * the Style Engine API. * * @package WordPress * @subpackage StyleEngine * @since 6.1.0 / /* * Global public interface method to generate styles from a single style object, * e.g. the value of a block's attributes.style object or the top level styles in theme.json. * * Example usage: * * $styles = wp_style_engine_get_styles( * array( * 'color' => array( 'text' => '#cccccc' ), * ) * ); * * Returns: * * array( * 'css' => 'color: #cccccc', * 'declarations' => array( 'color' => '#cccccc' ), * 'classnames' => 'has-color', * ) * * @since 6.1.0 * * @see https://developer.wordpress.org/block-editor/reference-guides/theme-json-reference/theme-json-living/#styles * @see https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/ * * @param array $block_styles The style object. * @param array $options { * Optional. An array of options. Default empty array. * * @type string\|null $context An identifier describing the origin of the style object, * e.g. 'block-supports' or 'global-styles'. Default null. * When set, the style engine will attempt to store the CSS rules, * where a selector is also passed. * @type bool $convert_vars_to_classnames Whether to skip converting incoming CSS var patterns, * e.g. `var:preset\|<PRESET_TYPE>\|<PRESET_SLUG>`, * to `var( --wp--preset--* )` values. Default false. * @type string $selector Optional. When a selector is passed, * the value of `$css` in the return value will comprise * a full CSS rule `$selector { ...$css_declarations }`, * otherwise, the value will be a concatenated string * of CSS declarations. * } * @return array { * @type string $css A CSS ruleset or declarations block * formatted to be placed in an HTML `style` attribute or tag. * @type string[] $declarations An associative array of CSS definitions, * e.g. `array( "$property" => "$value", "$property" => "$value" )`. * @type string $classnames Classnames separated by a space. * } / function wp_style_engine_get_styles( $block_styles, $options = array() ) { $options = wp_parse_args( $options, array( 'selector' => null, 'context' => null, 'convert_vars_to_classnames' => false, ) ); $parsed_styles = WP_Style_Engine::parse_block_styles( $block_styles, $options ); // Output. $styles_output = array(); if ( ! empty( $parsed_styles['declarations'] ) ) { $styles_output['css'] = WP_Style_Engine::compile_css( $parsed_styles['declarations'], $options['selector'] ); $styles_output['declarations'] = $parsed_styles['declarations']; if ( ! empty( $options['context'] ) ) { WP_Style_Engine::store_css_rule( $options['context'], $options['selector'], $parsed_styles['declarations'] ); } } if ( ! empty( $parsed_styles['classnames'] ) ) { $styles_output['classnames'] = implode( ' ', array_unique( $parsed_styles['classnames'] ) ); } return array_filter( $styles_output ); } /* * Returns compiled CSS from a collection of selectors and declarations. * Useful for returning a compiled stylesheet from any collection of CSS selector + declarations. * * Example usage: * * $css_rules = array( * array( * 'selector' => '.elephant-are-cool', * 'declarations' => array( * 'color' => 'gray', * 'width' => '3em', * ), * ), * ); * * $css = wp_style_engine_get_stylesheet_from_css_rules( $css_rules ); * * Returns: * * .elephant-are-cool{color:gray;width:3em} * * @since 6.1.0 * @since 6.6.0 Added support for `$rules_group` in the `$css_rules` array. * * @param array $css_rules { * Required. A collection of CSS rules. * * @type array ...$0 { * @type string $rules_group A parent CSS selector in the case of nested CSS, * or a CSS nested @rule, such as `@media (min-width: 80rem)` or `@layer module`. * @type string $selector A CSS selector. * @type string[] $declarations An associative array of CSS definitions, * e.g. `array( "$property" => "$value", "$property" => "$value" )`. * } * } * @param array $options { * Optional. An array of options. Default empty array. * * @type string\|null $context An identifier describing the origin of the style object, * e.g. 'block-supports' or 'global-styles'. Default 'block-supports'. * When set, the style engine will attempt to store the CSS rules. * @type bool $optimize Whether to optimize the CSS output, e.g. combine rules. * Default false. * @type bool $prettify Whether to add new lines and indents to output. * Defaults to whether the `SCRIPT_DEBUG` constant is defined. * } * @return string A string of compiled CSS declarations, or empty string. / function wp_style_engine_get_stylesheet_from_css_rules( $css_rules, $options = array() ) { if ( empty( $css_rules ) ) { return ''; } $options = wp_parse_args( $options, array( 'context' => null, ) ); $css_rule_objects = array(); foreach ( $css_rules as $css_rule ) { if ( empty( $css_rule['selector'] ) \|\| empty( $css_rule['declarations'] ) \|\| ! is_array( $css_rule['declarations'] ) ) { continue; } $rules_group = $css_rule['rules_group'] ?? null; if ( ! empty( $options['context'] ) ) { WP_Style_Engine::store_css_rule( $options['context'], $css_rule['selector'], $css_rule['declarations'], $rules_group ); } $css_rule_objects[] = new WP_Style_Engine_CSS_Rule( $css_rule['selector'], $css_rule['declarations'], $rules_group ); } if ( empty( $css_rule_objects ) ) { return ''; } return WP_Style_Engine::compile_stylesheet_from_css_rules( $css_rule_objects, $options ); } /* * Returns compiled CSS from a store, if found. * * @since 6.1.0 * * @param string $context A valid context name, corresponding to an existing store key. * @param array $options { * Optional. An array of options. Default empty array. * * @type bool $optimize Whether to optimize the CSS output, e.g. combine rules. * Default false. * @type bool $prettify Whether to add new lines and indents to output. * Defaults to whether the `SCRIPT_DEBUG` constant is defined. * } * @return string A compiled CSS string. */ function wp_style_engine_get_stylesheet_from_context( $context, $options = array() ) { return WP_Style_Engine::compile_stylesheet_from_css_rules( WP_Style_Engine::get_store( $context )->get_all_rules(), $options ); } Back

Edit File : style-engine.php | Size : 7.39 KB

<?php
/**
 * Style engine: Public functions
 *
 * This file contains a variety of public functions developers can use to interact with
 * the Style Engine API.
 *
 * @package WordPress
 * @subpackage StyleEngine
 * @since 6.1.0
 */

/**
 * Global public interface method to generate styles from a single style object,
 * e.g. the value of a block's attributes.style object or the top level styles in theme.json.
 *
 * Example usage:
 *
 *     $styles = wp_style_engine_get_styles(
 *         array(
 *             'color' => array( 'text' => '#cccccc' ),
 *         )
 *     );
 *
 * Returns:
 *
 *     array(
 *         'css'          => 'color: #cccccc',
 *         'declarations' => array( 'color' => '#cccccc' ),
 *         'classnames'   => 'has-color',
 *     )
 *
 * @since 6.1.0
 *
 * @see https://developer.wordpress.org/block-editor/reference-guides/theme-json-reference/theme-json-living/#styles
 * @see https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/
 *
 * @param array $block_styles The style object.
 * @param array $options {
 *     Optional. An array of options. Default empty array.
 *
 *     @type string|null $context                    An identifier describing the origin of the style object,
 *                                                   e.g. 'block-supports' or 'global-styles'. Default null.
 *                                                   When set, the style engine will attempt to store the CSS rules,
 *                                                   where a selector is also passed.
 *     @type bool        $convert_vars_to_classnames Whether to skip converting incoming CSS var patterns,
 *                                                   e.g. `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`,
 *                                                   to `var( --wp--preset--* )` values. Default false.
 *     @type string      $selector                   Optional. When a selector is passed,
 *                                                   the value of `$css` in the return value will comprise
 *                                                   a full CSS rule `$selector { ...$css_declarations }`,
 *                                                   otherwise, the value will be a concatenated string
 *                                                   of CSS declarations.
 * }
 * @return array {
 *     @type string   $css          A CSS ruleset or declarations block
 *                                  formatted to be placed in an HTML `style` attribute or tag.
 *     @type string[] $declarations An associative array of CSS definitions,
 *                                  e.g. `array( "$property" => "$value", "$property" => "$value" )`.
 *     @type string   $classnames   Classnames separated by a space.
 * }
 */
function wp_style_engine_get_styles( $block_styles, $options = array() ) {
	$options = wp_parse_args(
		$options,
		array(
			'selector'                   => null,
			'context'                    => null,
			'convert_vars_to_classnames' => false,
		)
	);

$parsed_styles = WP_Style_Engine::parse_block_styles( $block_styles, $options );

// Output.
	$styles_output = array();

if ( ! empty( $parsed_styles['declarations'] ) ) {
		$styles_output['css']          = WP_Style_Engine::compile_css( $parsed_styles['declarations'], $options['selector'] );
		$styles_output['declarations'] = $parsed_styles['declarations'];
		if ( ! empty( $options['context'] ) ) {
			WP_Style_Engine::store_css_rule( $options['context'], $options['selector'], $parsed_styles['declarations'] );
		}
	}

if ( ! empty( $parsed_styles['classnames'] ) ) {
		$styles_output['classnames'] = implode( ' ', array_unique( $parsed_styles['classnames'] ) );
	}

return array_filter( $styles_output );
}

/**
 * Returns compiled CSS from a collection of selectors and declarations.
 * Useful for returning a compiled stylesheet from any collection of CSS selector + declarations.
 *
 * Example usage:
 *
 *     $css_rules = array(
 *         array(
 *             'selector'     => '.elephant-are-cool',
 *             'declarations' => array(
 *                 'color' => 'gray',
 *                 'width' => '3em',
 *             ),
 *         ),
 *     );
 *
 *     $css = wp_style_engine_get_stylesheet_from_css_rules( $css_rules );
 *
 * Returns:
 *
 *     .elephant-are-cool{color:gray;width:3em}
 *
 * @since 6.1.0
 * @since 6.6.0 Added support for `$rules_group` in the `$css_rules` array.
 *
 * @param array $css_rules {
 *     Required. A collection of CSS rules.
 *
 *     @type array ...$0 {
 *         @type string   $rules_group  A parent CSS selector in the case of nested CSS,
 *                                      or a CSS nested @rule, such as `@media (min-width: 80rem)` or `@layer module`.
 *         @type string   $selector     A CSS selector.
 *         @type string[] $declarations An associative array of CSS definitions,
 *                                      e.g. `array( "$property" => "$value", "$property" => "$value" )`.
 *     }
 * }
 * @param array $options {
 *     Optional. An array of options. Default empty array.
 *
 *     @type string|null $context  An identifier describing the origin of the style object,
 *                                 e.g. 'block-supports' or 'global-styles'. Default 'block-supports'.
 *                                 When set, the style engine will attempt to store the CSS rules.
 *     @type bool        $optimize Whether to optimize the CSS output, e.g. combine rules.
 *                                 Default false.
 *     @type bool        $prettify Whether to add new lines and indents to output.
 *                                 Defaults to whether the `SCRIPT_DEBUG` constant is defined.
 * }
 * @return string A string of compiled CSS declarations, or empty string.
 */
function wp_style_engine_get_stylesheet_from_css_rules( $css_rules, $options = array() ) {
	if ( empty( $css_rules ) ) {
		return '';
	}

$options = wp_parse_args(
		$options,
		array(
			'context' => null,
		)
	);

$css_rule_objects = array();
	foreach ( $css_rules as $css_rule ) {
		if ( empty( $css_rule['selector'] ) || empty( $css_rule['declarations'] ) || ! is_array( $css_rule['declarations'] ) ) {
			continue;
		}

$rules_group = $css_rule['rules_group'] ?? null;
		if ( ! empty( $options['context'] ) ) {
			WP_Style_Engine::store_css_rule( $options['context'], $css_rule['selector'], $css_rule['declarations'], $rules_group );
		}

$css_rule_objects[] = new WP_Style_Engine_CSS_Rule( $css_rule['selector'], $css_rule['declarations'], $rules_group );
	}

if ( empty( $css_rule_objects ) ) {
		return '';
	}

return WP_Style_Engine::compile_stylesheet_from_css_rules( $css_rule_objects, $options );
}

/**
 * Returns compiled CSS from a store, if found.
 *
 * @since 6.1.0
 *
 * @param string $context A valid context name, corresponding to an existing store key.
 * @param array  $options {
 *     Optional. An array of options. Default empty array.
 *
 *     @type bool $optimize Whether to optimize the CSS output, e.g. combine rules.
 *                          Default false.
 *     @type bool $prettify Whether to add new lines and indents to output.
 *                          Defaults to whether the `SCRIPT_DEBUG` constant is defined.
 * }
 * @return string A compiled CSS string.
 */
function wp_style_engine_get_stylesheet_from_context( $context, $options = array() ) {
	return WP_Style_Engine::compile_stylesheet_from_css_rules( WP_Style_Engine::get_store( $context )->get_all_rules(), $options );
}

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