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class-wp-style-engine-css-declarations.php 0000666 00000011515 15123410056 0014647 0 ustar 00 <?php
/**
* WP_Style_Engine_CSS_Declarations
*
* Holds, sanitizes and prints CSS rules declarations
*
* @package WordPress
* @subpackage StyleEngine
* @since 6.1.0
*/
/**
* Class WP_Style_Engine_CSS_Declarations.
*
* Holds, sanitizes, processes and prints CSS declarations for the style engine.
*
* @since 6.1.0
*/
#[AllowDynamicProperties]
class WP_Style_Engine_CSS_Declarations {
/**
* An array of CSS declarations (property => value pairs).
*
* @since 6.1.0
*
* @var array
*/
protected $declarations = array();
/**
* Constructor for this object.
*
* If a `$declarations` array is passed, it will be used to populate
* the initial $declarations prop of the object by calling add_declarations().
*
* @since 6.1.0
*
* @param string[] $declarations An associative array of CSS definitions, e.g., array( "$property" => "$value", "$property" => "$value" ).
*/
public function __construct( $declarations = array() ) {
$this->add_declarations( $declarations );
}
/**
* Adds a single declaration.
*
* @since 6.1.0
*
* @param string $property The CSS property.
* @param string $value The CSS value.
*
* @return WP_Style_Engine_CSS_Declarations Returns the object to allow chaining methods.
*/
public function add_declaration( $property, $value ) {
// Sanitizes the property.
$property = $this->sanitize_property( $property );
// Bails early if the property is empty.
if ( empty( $property ) ) {
return $this;
}
// Trims the value. If empty, bail early.
$value = trim( $value );
if ( '' === $value ) {
return $this;
}
// Adds the declaration property/value pair.
$this->declarations[ $property ] = $value;
return $this;
}
/**
* Removes a single declaration.
*
* @since 6.1.0
*
* @param string $property The CSS property.
*
* @return WP_Style_Engine_CSS_Declarations Returns the object to allow chaining methods.
*/
public function remove_declaration( $property ) {
unset( $this->declarations[ $property ] );
return $this;
}
/**
* Adds multiple declarations.
*
* @since 6.1.0
*
* @param array $declarations An array of declarations.
*
* @return WP_Style_Engine_CSS_Declarations Returns the object to allow chaining methods.
*/
public function add_declarations( $declarations ) {
foreach ( $declarations as $property => $value ) {
$this->add_declaration( $property, $value );
}
return $this;
}
/**
* Removes multiple declarations.
*
* @since 6.1.0
*
* @param array $properties An array of properties.
*
* @return WP_Style_Engine_CSS_Declarations Returns the object to allow chaining methods.
*/
public function remove_declarations( $properties = array() ) {
foreach ( $properties as $property ) {
$this->remove_declaration( $property );
}
return $this;
}
/**
* Gets the declarations array.
*
* @since 6.1.0
*
* @return array
*/
public function get_declarations() {
return $this->declarations;
}
/**
* Filters a CSS property + value pair.
*
* @since 6.1.0
*
* @param string $property The CSS property.
* @param string $value The value to be filtered.
* @param string $spacer The spacer between the colon and the value. Defaults to an empty string.
*
* @return string The filtered declaration or an empty string.
*/
protected static function filter_declaration( $property, $value, $spacer = '' ) {
$filtered_value = wp_strip_all_tags( $value, true );
if ( '' !== $filtered_value ) {
return safecss_filter_attr( "{$property}:{$spacer}{$filtered_value}" );
}
return '';
}
/**
* Filters and compiles the CSS declarations.
*
* @since 6.1.0
*
* @param bool $should_prettify Whether to add spacing, new lines and indents.
* @param number $indent_count The number of tab indents to apply to the rule. Applies if `prettify` is `true`.
*
* @return string The CSS declarations.
*/
public function get_declarations_string( $should_prettify = false, $indent_count = 0 ) {
$declarations_array = $this->get_declarations();
$declarations_output = '';
$indent = $should_prettify ? str_repeat( "\t", $indent_count ) : '';
$suffix = $should_prettify ? ' ' : '';
$suffix = $should_prettify && $indent_count > 0 ? "\n" : $suffix;
$spacer = $should_prettify ? ' ' : '';
foreach ( $declarations_array as $property => $value ) {
$filtered_declaration = static::filter_declaration( $property, $value, $spacer );
if ( $filtered_declaration ) {
$declarations_output .= "{$indent}{$filtered_declaration};$suffix";
}
}
return rtrim( $declarations_output );
}
/**
* Sanitizes property names.
*
* @since 6.1.0
*
* @param string $property The CSS property.
*
* @return string The sanitized property name.
*/
protected function sanitize_property( $property ) {
return sanitize_key( $property );
}
}
class-wp-style-engine-css-rule.php 0000666 00000007265 15123410056 0013155 0 ustar 00 <?php
/**
* WP_Style_Engine_CSS_Rule
*
* An object for CSS rules.
*
* @package WordPress
* @subpackage StyleEngine
* @since 6.1.0
*/
/**
* Class WP_Style_Engine_CSS_Rule.
*
* Holds, sanitizes, processes and prints CSS declarations for the style engine.
*
* @since 6.1.0
*/
#[AllowDynamicProperties]
class WP_Style_Engine_CSS_Rule {
/**
* The selector.
*
* @since 6.1.0
* @var string
*/
protected $selector;
/**
* The selector declarations.
*
* Contains a WP_Style_Engine_CSS_Declarations object.
*
* @since 6.1.0
* @var WP_Style_Engine_CSS_Declarations
*/
protected $declarations;
/**
* Constructor
*
* @since 6.1.0
*
* @param string $selector The CSS selector.
* @param string[]|WP_Style_Engine_CSS_Declarations $declarations An associative array of CSS definitions, e.g., array( "$property" => "$value", "$property" => "$value" ),
* or a WP_Style_Engine_CSS_Declarations object.
*/
public function __construct( $selector = '', $declarations = array() ) {
$this->set_selector( $selector );
$this->add_declarations( $declarations );
}
/**
* Sets the selector.
*
* @since 6.1.0
*
* @param string $selector The CSS selector.
*
* @return WP_Style_Engine_CSS_Rule Returns the object to allow chaining of methods.
*/
public function set_selector( $selector ) {
$this->selector = $selector;
return $this;
}
/**
* Sets the declarations.
*
* @since 6.1.0
*
* @param array|WP_Style_Engine_CSS_Declarations $declarations An array of declarations (property => value pairs),
* or a WP_Style_Engine_CSS_Declarations object.
*
* @return WP_Style_Engine_CSS_Rule Returns the object to allow chaining of methods.
*/
public function add_declarations( $declarations ) {
$is_declarations_object = ! is_array( $declarations );
$declarations_array = $is_declarations_object ? $declarations->get_declarations() : $declarations;
if ( null === $this->declarations ) {
if ( $is_declarations_object ) {
$this->declarations = $declarations;
return $this;
}
$this->declarations = new WP_Style_Engine_CSS_Declarations( $declarations_array );
}
$this->declarations->add_declarations( $declarations_array );
return $this;
}
/**
* Gets the declarations object.
*
* @since 6.1.0
*
* @return WP_Style_Engine_CSS_Declarations The declarations object.
*/
public function get_declarations() {
return $this->declarations;
}
/**
* Gets the full selector.
*
* @since 6.1.0
*
* @return string
*/
public function get_selector() {
return $this->selector;
}
/**
* Gets the CSS.
*
* @since 6.1.0
*
* @param bool $should_prettify Whether to add spacing, new lines and indents.
* @param number $indent_count The number of tab indents to apply to the rule. Applies if `prettify` is `true`.
*
* @return string
*/
public function get_css( $should_prettify = false, $indent_count = 0 ) {
$rule_indent = $should_prettify ? str_repeat( "\t", $indent_count ) : '';
$declarations_indent = $should_prettify ? $indent_count + 1 : 0;
$suffix = $should_prettify ? "\n" : '';
$spacer = $should_prettify ? ' ' : '';
$selector = $should_prettify ? str_replace( ',', ",\n", $this->get_selector() ) : $this->get_selector();
$css_declarations = $this->declarations->get_declarations_string( $should_prettify, $declarations_indent );
if ( empty( $css_declarations ) ) {
return '';
}
return "{$rule_indent}{$selector}{$spacer}{{$suffix}{$css_declarations}{$suffix}{$rule_indent}}";
}
}
class-wp-style-engine-css-rules-store.php 0000666 00000006115 15123410056 0014463 0 ustar 00 <?php
/**
* WP_Style_Engine_CSS_Rules_Store
*
* A store for WP_Style_Engine_CSS_Rule objects.
*
* @package WordPress
* @subpackage StyleEngine
* @since 6.1.0
*/
/**
* Class WP_Style_Engine_CSS_Rules_Store.
*
* Holds, sanitizes, processes and prints CSS declarations for the style engine.
*
* @since 6.1.0
*/
#[AllowDynamicProperties]
class WP_Style_Engine_CSS_Rules_Store {
/**
* An array of named WP_Style_Engine_CSS_Rules_Store objects.
*
* @static
*
* @since 6.1.0
* @var WP_Style_Engine_CSS_Rules_Store[]
*/
protected static $stores = array();
/**
* The store name.
*
* @since 6.1.0
* @var string
*/
protected $name = '';
/**
* An array of CSS Rules objects assigned to the store.
*
* @since 6.1.0
* @var WP_Style_Engine_CSS_Rule[]
*/
protected $rules = array();
/**
* Gets an instance of the store.
*
* @since 6.1.0
*
* @param string $store_name The name of the store.
*
* @return WP_Style_Engine_CSS_Rules_Store|void
*/
public static function get_store( $store_name = 'default' ) {
if ( ! is_string( $store_name ) || empty( $store_name ) ) {
return;
}
if ( ! isset( static::$stores[ $store_name ] ) ) {
static::$stores[ $store_name ] = new static();
// Set the store name.
static::$stores[ $store_name ]->set_name( $store_name );
}
return static::$stores[ $store_name ];
}
/**
* Gets an array of all available stores.
*
* @since 6.1.0
*
* @return WP_Style_Engine_CSS_Rules_Store[]
*/
public static function get_stores() {
return static::$stores;
}
/**
* Clears all stores from static::$stores.
*
* @since 6.1.0
*
* @return void
*/
public static function remove_all_stores() {
static::$stores = array();
}
/**
* Sets the store name.
*
* @since 6.1.0
*
* @param string $name The store name.
*
* @return void
*/
public function set_name( $name ) {
$this->name = $name;
}
/**
* Gets the store name.
*
* @since 6.1.0
*
* @return string
*/
public function get_name() {
return $this->name;
}
/**
* Gets an array of all rules.
*
* @since 6.1.0
*
* @return WP_Style_Engine_CSS_Rule[]
*/
public function get_all_rules() {
return $this->rules;
}
/**
* Gets a WP_Style_Engine_CSS_Rule object by its selector.
* If the rule does not exist, it will be created.
*
* @since 6.1.0
*
* @param string $selector The CSS selector.
*
* @return WP_Style_Engine_CSS_Rule|void Returns a WP_Style_Engine_CSS_Rule object, or null if the selector is empty.
*/
public function add_rule( $selector ) {
$selector = trim( $selector );
// Bail early if there is no selector.
if ( empty( $selector ) ) {
return;
}
// Create the rule if it doesn't exist.
if ( empty( $this->rules[ $selector ] ) ) {
$this->rules[ $selector ] = new WP_Style_Engine_CSS_Rule( $selector );
}
return $this->rules[ $selector ];
}
/**
* Removes a selector from the store.
*
* @since 6.1.0
*
* @param string $selector The CSS selector.
*
* @return void
*/
public function remove_rule( $selector ) {
unset( $this->rules[ $selector ] );
}
}
class-wp-style-engine-processor.php 0000666 00000010675 15123410056 0013436 0 ustar 00 <?php
/**
* WP_Style_Engine_Processor
*
* Compiles styles from stores or collection of CSS rules.
*
* @package WordPress
* @subpackage StyleEngine
* @since 6.1.0
*/
/**
* Class WP_Style_Engine_Processor.
*
* Compiles styles from stores or collection of CSS rules.
*
* @since 6.1.0
*/
#[AllowDynamicProperties]
class WP_Style_Engine_Processor {
/**
* A collection of Style Engine Store objects.
*
* @since 6.1.0
* @var WP_Style_Engine_CSS_Rules_Store[]
*/
protected $stores = array();
/**
* The set of CSS rules that this processor will work on.
*
* @since 6.1.0
* @var WP_Style_Engine_CSS_Rule[]
*/
protected $css_rules = array();
/**
* Adds a store to the processor.
*
* @since 6.1.0
*
* @param WP_Style_Engine_CSS_Rules_Store $store The store to add.
*
* @return WP_Style_Engine_Processor Returns the object to allow chaining methods.
*/
public function add_store( $store ) {
if ( ! $store instanceof WP_Style_Engine_CSS_Rules_Store ) {
_doing_it_wrong(
__METHOD__,
__( '$store must be an instance of WP_Style_Engine_CSS_Rules_Store' ),
'6.1.0'
);
return $this;
}
$this->stores[ $store->get_name() ] = $store;
return $this;
}
/**
* Adds rules to be processed.
*
* @since 6.1.0
*
* @param WP_Style_Engine_CSS_Rule|WP_Style_Engine_CSS_Rule[] $css_rules A single, or an array of, WP_Style_Engine_CSS_Rule objects from a store or otherwise.
*
* @return WP_Style_Engine_Processor Returns the object to allow chaining methods.
*/
public function add_rules( $css_rules ) {
if ( ! is_array( $css_rules ) ) {
$css_rules = array( $css_rules );
}
foreach ( $css_rules as $rule ) {
$selector = $rule->get_selector();
if ( isset( $this->css_rules[ $selector ] ) ) {
$this->css_rules[ $selector ]->add_declarations( $rule->get_declarations() );
continue;
}
$this->css_rules[ $rule->get_selector() ] = $rule;
}
return $this;
}
/**
* Gets the CSS rules as a string.
*
* @since 6.1.0
*
* @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 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.
* }
*
* @return string The computed CSS.
*/
public function get_css( $options = array() ) {
$defaults = array(
'optimize' => true,
'prettify' => defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG,
);
$options = wp_parse_args( $options, $defaults );
// If we have stores, get the rules from them.
foreach ( $this->stores as $store ) {
$this->add_rules( $store->get_all_rules() );
}
// Combine CSS selectors that have identical declarations.
if ( true === $options['optimize'] ) {
$this->combine_rules_selectors();
}
// Build the CSS.
$css = '';
foreach ( $this->css_rules as $rule ) {
$css .= $rule->get_css( $options['prettify'] );
$css .= $options['prettify'] ? "\n" : '';
}
return $css;
}
/**
* Combines selectors from the rules store when they have the same styles.
*
* @since 6.1.0
*
* @return void
*/
private function combine_rules_selectors() {
// Build an array of selectors along with the JSON-ified styles to make comparisons easier.
$selectors_json = array();
foreach ( $this->css_rules as $rule ) {
$declarations = $rule->get_declarations()->get_declarations();
ksort( $declarations );
$selectors_json[ $rule->get_selector() ] = wp_json_encode( $declarations );
}
// Combine selectors that have the same styles.
foreach ( $selectors_json as $selector => $json ) {
// Get selectors that use the same styles.
$duplicates = array_keys( $selectors_json, $json, true );
// Skip if there are no duplicates.
if ( 1 >= count( $duplicates ) ) {
continue;
}
$declarations = $this->css_rules[ $selector ]->get_declarations();
foreach ( $duplicates as $key ) {
// Unset the duplicates from the $selectors_json array to avoid looping through them as well.
unset( $selectors_json[ $key ] );
// Remove the rules from the rules collection.
unset( $this->css_rules[ $key ] );
}
// Create a new rule with the combined selectors.
$duplicate_selectors = implode( ',', $duplicates );
$this->css_rules[ $duplicate_selectors ] = new WP_Style_Engine_CSS_Rule( $duplicate_selectors, $declarations );
}
}
}