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<?php |
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|
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namespace Elementor\Modules\AtomicWidgets\CssConverter\ValueParsers; |
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|
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use Elementor\Modules\AtomicWidgets\Styles\Size_Constants; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* Stateless leaf parser: a raw CSS length-ish value -> the {size, unit} leaf a Size_Prop_Type accepts, |
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* or null to decline (the caller then routes the declaration to custom_css). It never touches the |
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* registry, context, or PropTypes. |
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* |
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* - "auto" -> { size: null, unit: 'auto' } |
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* - calc()/clamp()/min()/max()/var()/env() -> { size: '<raw>', unit: 'custom' } (kept verbatim) |
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* - "<number><unit>" (unit in all_supported_units) -> { size: <number>, unit: <unit> } |
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* - unitless "0" -> { size: 0, unit: 'px' } |
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* - unitless non-zero, $allow_unitless on -> { size: '<raw>', unit: 'custom' } (e.g. line-height: 1.1) |
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* - anything else (unitless non-zero with $allow_unitless off, unknown unit, multi-value) -> null |
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*/ |
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class Size_Value_Parser { |
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const NUMBER_WITH_UNIT_PATTERN = '/^(-?\d*\.?\d+)([a-z%]*)$/i'; |
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const DYNAMIC_FUNCTION_PATTERN = '/(?:calc|clamp|min|max|var|env)\(/i'; |
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|
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/** |
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* @param string $value The raw CSS value. |
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* @param bool $allow_unitless When true, a unitless non-zero number (e.g. a line-height multiplier) |
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* is kept verbatim as a `custom` unit instead of declining. |
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* |
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* @return array{size: mixed, unit: string}|null |
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*/ |
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public static function parse( string $value, bool $allow_unitless = false ): ?array { |
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$value = trim( $value ); |
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|
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if ( '' === $value ) { |
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return null; |
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} |
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|
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if ( Size_Constants::UNIT_AUTO === strtolower( $value ) ) { |
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return [ |
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'size' => null, |
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'unit' => Size_Constants::UNIT_AUTO, |
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]; |
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} |
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|
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if ( self::is_dynamic_value( $value ) ) { |
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return [ |
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'size' => $value, |
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'unit' => Size_Constants::UNIT_CUSTOM, |
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]; |
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} |
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|
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return self::parse_number_with_unit( $value, $allow_unitless ); |
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} |
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|
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/** |
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* @return array{size: mixed, unit: string}|null |
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*/ |
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private static function parse_number_with_unit( string $value, bool $allow_unitless ): ?array { |
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if ( ! preg_match( self::NUMBER_WITH_UNIT_PATTERN, $value, $matches ) ) { |
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return null; |
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} |
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|
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$size = $matches[1] + 0; |
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$unit = strtolower( $matches[2] ); |
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|
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if ( '' === $unit ) { |
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if ( 0.0 === (float) $size ) { |
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return [ |
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'size' => $size, |
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'unit' => Size_Constants::DEFAULT_UNIT, |
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]; |
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} |
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|
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return $allow_unitless |
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? [ |
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'size' => $matches[1], |
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'unit' => Size_Constants::UNIT_CUSTOM, |
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] |
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: null; |
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} |
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|
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if ( ! in_array( $unit, Size_Constants::all_supported_units(), true ) ) { |
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return null; |
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} |
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|
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return [ |
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'size' => $size, |
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'unit' => $unit, |
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]; |
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} |
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|
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private static function is_dynamic_value( string $value ): bool { |
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return 1 === preg_match( self::DYNAMIC_FUNCTION_PATTERN, $value ); |
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} |
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} |
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|
