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Docs: Improve Style Engine DocBlocks per the documentation standards.

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Follow-up to [54156], [55719], [55733].

See #57840.

git-svn-id: https://develop.svn.wordpress.org/trunk@55819 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov
2023-05-17 11:56:47 +00:00
parent ac87b8701f
commit 80f34c8aaa
7 changed files with 183 additions and 85 deletions
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src/wp-includes/style-engine/class-wp-style-engine.php
+91 -43
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@@ -10,11 +10,14 @@
/**
* The main class integrating all other WP_Style_Engine_* classes.
*
* The Style Engine aims to provide a consistent API for rendering styling for blocks across both client-side and server-side applications.
* The Style Engine aims to provide a consistent API for rendering styling for blocks
* across both client-side and server-side applications.
*
* This class is final and should not be extended.
* This class is for internal Core usage and is not supposed to be used by extenders (plugins and/or themes).
* This is a low-level API that may need to do breaking changes. Please, use wp_style_engine_get_styles() instead.
*
* This class is for internal Core usage and is not supposed to be used by extenders
* (plugins and/or themes). This is a low-level API that may need to do breaking changes.
* Please, use wp_style_engine_get_styles() instead.
*
* @access private
* @since 6.1.0
@@ -24,15 +27,24 @@ final class WP_Style_Engine {
/**
* Style definitions that contain the instructions to
* parse/output valid Gutenberg styles from a block's attributes.
* For every style definition, the follow properties are valid:
* - classnames => (array) an array of classnames to be returned for block styles. The key is a classname or pattern.
* A value of `true` means the classname should be applied always. Otherwise, a valid CSS property (string)
* to match the incoming value, e.g., "color" to match var:preset|color|somePresetSlug.
* - css_vars => (array) an array of key value pairs used to generate CSS var values. The key is a CSS var pattern, whose `$slug` fragment will be replaced with a preset slug.
* The value should be a valid CSS property (string) to match the incoming value, e.g., "color" to match var:preset|color|somePresetSlug.
* - property_keys => (array) array of keys whose values represent a valid CSS property, e.g., "margin" or "border".
* - path => (array) a path that accesses the corresponding style value in the block style object.
* - value_func => (string) the name of a function to generate a CSS definition array for a particular style object. The output of this function should be `array( "$property" => "$value", ... )`.
*
* For every style definition, the following properties are valid:
*
* - classnames => (array) An array of classnames to be returned for block styles.
* The key is a classname or pattern.
* A value of `true` means the classname should be applied always.
* Otherwise, a valid CSS property (string) to match the incoming value,
* e.g. "color" to match var:preset|color|somePresetSlug.
* - css_vars => (array) An array of key value pairs used to generate CSS var values.
* The key is a CSS var pattern, whose `$slug` fragment will be replaced with a preset slug.
* The value should be a valid CSS property (string) to match the incoming value,
* e.g. "color" to match var:preset|color|somePresetSlug.
* - property_keys => (array) An array of keys whose values represent a valid CSS property,
* e.g. "margin" or "border".
* - path => (array) A path that accesses the corresponding style value in the block style object.
* - value_func => (string) The name of a function to generate a CSS definition array
* for a particular style object. The output of this function should be
* `array( "$property" => "$value", ... )`.
*
* @since 6.1.0
* @var array
@@ -227,16 +239,20 @@ final class WP_Style_Engine {
);
/**
* Util: Extracts the slug in kebab case from a preset string, e.g., `heavenly-blue` from `var:preset|color|heavenlyBlue`.
* Util: Extracts the slug in kebab case from a preset string,
* e.g. `heavenly-blue` from `var:preset|color|heavenlyBlue`.
*
* @since 6.1.0
*
* @param string $style_value A single CSS preset value.
* @param string $property_key The CSS property that is the second element of the preset string. Used for matching.
* @param string $property_key The CSS property that is the second element of the preset string.
* Used for matching.
* @return string The slug, or empty string if not found.
*/
protected static function get_slug_from_preset_value( $style_value, $property_key ) {
if ( is_string( $style_value ) && is_string( $property_key ) && str_contains( $style_value, "var:preset|{$property_key}|" ) ) {
if ( is_string( $style_value ) && is_string( $property_key )
&& str_contains( $style_value, "var:preset|{$property_key}|" )
) {
$index_to_splice = strrpos( $style_value, '|' ) + 1;
return _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );
}
@@ -244,12 +260,14 @@ final class WP_Style_Engine {
}
/**
* Util: Generates a CSS var string, e.g., `var(--wp--preset--color--background)` from a preset string such as `var:preset|space|50`.
* Util: Generates a CSS var string, e.g. `var(--wp--preset--color--background)`
* from a preset string such as `var:preset|space|50`.
*
* @since 6.1.0
*
* @param string $style_value A single CSS preset value.
* @param string[] $css_vars An associate array of CSS var patterns used to generate the var string.
* @param string[] $css_vars An associate array of CSS var patterns
* used to generate the var string.
* @return string The CSS var, or an empty string if no match for slug found.
*/
protected static function get_css_var_value( $style_value, $css_vars ) {
@@ -284,8 +302,11 @@ final class WP_Style_Engine {
* @since 6.1.0
*
* @param string $store_name A valid store key.
* @param string $css_selector When a selector is passed, the function will return a full CSS rule `$selector { ...rules }`, otherwise a concatenated string of properties and values.
* @param string[] $css_declarations An associative array of CSS definitions, e.g., `array( "$property" => "$value", "$property" => "$value" )`.
* @param string $css_selector When a selector is passed, the function will return
* a full CSS rule `$selector { ...rules }`
* otherwise a concatenated string of properties and values.
* @param string[] $css_declarations An associative array of CSS definitions,
* e.g. `array( "$property" => "$value", "$property" => "$value" )`.
*/
public static function store_css_rule( $store_name, $css_selector, $css_declarations ) {
if ( empty( $store_name ) || empty( $css_selector ) || empty( $css_declarations ) ) {
@@ -308,6 +329,7 @@ final class WP_Style_Engine {
/**
* Returns classnames and CSS based on the values in a styles object.
*
* Return values are parsed based on the instructions in BLOCK_STYLE_DEFINITIONS_METADATA.
*
* @since 6.1.0
@@ -316,13 +338,19 @@ final class WP_Style_Engine {
* @param array $options {
* Optional. An array of options. Default empty array.
*
* @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.
* @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[] $classnames Array of class names.
* @type string[] $declarations An associative array of CSS definitions, e.g., `array( "$property" => "$value", "$property" => "$value" )`.
* @type string[] $declarations An associative array of CSS definitions,
* e.g. `array( "$property" => "$value", "$property" => "$value" )`.
* }
*/
public static function parse_block_styles( $block_styles, $options ) {
@@ -355,11 +383,13 @@ final class WP_Style_Engine {
}
/**
* Returns classnames, and generates classname(s) from a CSS preset property pattern, e.g., `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`.
* Returns classnames, and generates classname(s) from a CSS preset property pattern,
* e.g. `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`.
*
* @since 6.1.0
*
* @param string $style_value A single raw style value or CSS preset property from the `$block_styles` array.
* @param string $style_value A single raw style value or CSS preset property
* from the `$block_styles` array.
* @param array $style_definition A single style definition from BLOCK_STYLE_DEFINITIONS_METADATA.
* @return string[] An array of CSS classnames, or empty array if there are none.
*/
@@ -402,11 +432,11 @@ final class WP_Style_Engine {
* @param array $options {
* Optional. An array of options. Default empty array.
*
* @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 bool $convert_vars_to_classnames Whether to skip converting incoming CSS var patterns,
* e.g. `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`,
* to `var( --wp--preset--* )` values. Default false.
* }
* @return string[] An associative array of CSS definitions, e.g., `array( "$property" => "$value", "$property" => "$value" )`.
* @return string[] An associative array of CSS definitions, e.g. `array( "$property" => "$value", "$property" => "$value" )`.
*/
protected static function get_css_declarations( $style_value, $style_definition, $options = array() ) {
if ( isset( $style_definition['value_func'] ) && is_callable( $style_definition['value_func'] ) ) {
@@ -480,13 +510,17 @@ final class WP_Style_Engine {
* @since 6.1.0
*
* @param array $style_value A single raw style value from `$block_styles` array.
* @param array $individual_property_definition A single style definition from BLOCK_STYLE_DEFINITIONS_METADATA representing an individual property of a CSS property, e.g., 'top' in 'border-top'.
* @param array $individual_property_definition A single style definition from BLOCK_STYLE_DEFINITIONS_METADATA
* representing an individual property of a CSS property,
* e.g. 'top' in 'border-top'.
* @param array $options {
* Optional. An array of options. Default empty array.
*
* @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 bool $convert_vars_to_classnames Whether to skip converting incoming CSS var patterns,
* e.g. `var:preset|<PRESET_TYPE>|<PRESET_SLUG>`,
* to `var( --wp--preset--* )` values. Default false.
* }
* @return string[] An associative array of CSS definitions, e.g., `array( "$property" => "$value", "$property" => "$value" )`.
* @return string[] An associative array of CSS definitions, e.g. `array( "$property" => "$value", "$property" => "$value" )`.
*/
protected static function get_individual_property_css_declarations( $style_value, $individual_property_definition, $options = array() ) {
if ( ! is_array( $style_value ) || empty( $style_value ) || empty( $individual_property_definition['path'] ) ) {
@@ -494,9 +528,12 @@ final class WP_Style_Engine {
}
/*
* The first item in $individual_property_definition['path'] array tells us the style property, e.g., "border".
* We use this to get a corresponding CSS style definition such as "color" or "width" from the same group.
* The second item in $individual_property_definition['path'] array refers to the individual property marker, e.g., "top".
* The first item in $individual_property_definition['path'] array
* tells us the style property, e.g. "border". We use this to get a corresponding
* CSS style definition such as "color" or "width" from the same group.
*
* The second item in $individual_property_definition['path'] array
* refers to the individual property marker, e.g. "top".
*/
$definition_group_key = $individual_property_definition['path'][0];
$individual_property_key = $individual_property_definition['path'][1];
@@ -514,10 +551,14 @@ final class WP_Style_Engine {
if ( $style_definition && isset( $style_definition['property_keys']['individual'] ) ) {
// Set a CSS var if there is a valid preset value.
if ( is_string( $value ) && str_contains( $value, 'var:' ) && ! $should_skip_css_vars && ! empty( $individual_property_definition['css_vars'] ) ) {
if ( is_string( $value ) && str_contains( $value, 'var:' )
&& ! $should_skip_css_vars && ! empty( $individual_property_definition['css_vars'] )
) {
$value = static::get_css_var_value( $value, $individual_property_definition['css_vars'] );
}
$individual_css_property = sprintf( $style_definition['property_keys']['individual'], $individual_property_key );
$individual_css_property = sprintf( $style_definition['property_keys']['individual'], $individual_property_key );
$css_declarations[ $individual_css_property ] = $value;
}
}
@@ -529,8 +570,11 @@ final class WP_Style_Engine {
*
* @since 6.1.0
*
* @param string[] $css_declarations An associative array of CSS definitions, e.g., `array( "$property" => "$value", "$property" => "$value" )`.
* @param string $css_selector When a selector is passed, the function will return a full CSS rule `$selector { ...rules }`, otherwise a concatenated string of properties and values.
* @param string[] $css_declarations An associative array of CSS definitions,
* e.g. `array( "$property" => "$value", "$property" => "$value" )`.
* @param string $css_selector When a selector is passed, the function will return
* a full CSS rule `$selector { ...rules }`,
* otherwise a concatenated string of properties and values.
* @return string A compiled CSS string.
*/
public static function compile_css( $css_declarations, $css_selector ) {
@@ -553,14 +597,18 @@ final class WP_Style_Engine {
*
* @since 6.1.0
*
* @param WP_Style_Engine_CSS_Rule[] $css_rules An array of WP_Style_Engine_CSS_Rule objects from a store or otherwise.
* @param WP_Style_Engine_CSS_Rule[] $css_rules An array of WP_Style_Engine_CSS_Rule objects
* from a store or otherwise.
* @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 is 'block-supports'.
* @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 is `false`.
* @type bool $prettify Whether to add new lines and indents to output. Default is the test of whether the global constant `SCRIPT_DEBUG` is defined.
* @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 stylesheet from stored CSS rules.
*/