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<?php /** * Style Engine: WP_Style_Engine_CSS_Declarations class * * @package WordPress * @subpackage StyleEngine * @since 6.1.0 */ /** * Core class used for 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 string[] */ 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[] $declarations Optional. An associative array of CSS definitions, * e.g. `array( "$property" => "$value", "$property" => "$value" )`. * Default empty array. */ 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 string[] $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 string[] $properties Optional. An array of properties. Default empty array. * @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 string[] The declarations 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 Optional. The spacer between the colon and the value. * Default 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 Optional. Whether to add spacing, new lines and indents. * Default false. * @param int $indent_count Optional. The number of tab indents to apply to the rule. * Applies if `prettify` is `true`. Default 0. * @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 ); } }
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