@wix/css-property-parser/commonjs/evaluators/overflow.cjs

A comprehensive TypeScript library for parsing and serializing CSS property values with full MDN specification compliance

"use strict";
// CSS overflow property evaluator
// Handles CSS overflow property values according to MDN specification
// https://developer.mozilla.org/en-US/docs/Web/CSS/overflow
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = parse;
exports.toCSSValue = toCSSValue;
const shared_utils_1 = require('../utils/shared-utils.cjs');
const css_variable_1 = require('./css-variable.cjs');
const types_1 = require('../types.cjs');
/**
 * Parses a CSS overflow property value according to MDN specification
 *
 * Supports:
 * - visible: Content is not clipped and may overflow the container
 * - hidden: Content is clipped to the container with no scrolling mechanism
 * - scroll: Content is clipped with scrollbars always visible
 * - auto: Content is clipped with scrollbars shown only when needed
 * - clip: Content is clipped with no scrolling mechanism (newer value)
 * - Global keywords: inherit, initial, unset, revert, revert-layer
 * - CSS variables: var(--custom-overflow)
 *
 * @param value - The CSS value to parse
 * @returns Parsed OverflowValue or null if invalid
 */
function parse(value) {
    if (!value || typeof value !== 'string')
        return null;
    const trimmed = value.trim();
    if (trimmed === '')
        return null;
    // CSS variables - parse and return directly
    if ((0, shared_utils_1.isCssVariable)(trimmed)) {
        return (0, css_variable_1.parse)(trimmed);
    }
    // Global keywords
    if ((0, shared_utils_1.isGlobalKeyword)(trimmed)) {
        return { type: 'keyword', keyword: trimmed.toLowerCase() };
    }
    // Overflow-specific keywords  
    const overflowKeyword = (0, shared_utils_1.getValidKeyword)(trimmed, types_1.OVERFLOW_KEYWORDS);
    if (overflowKeyword) {
        return { type: 'keyword', keyword: overflowKeyword };
    }
    return null;
}
/**
 * Converts a parsed OverflowValue back to CSS string representation
 *
 * @param parsed - The parsed overflow value
 * @returns CSS value string or null if invalid
 */
function toCSSValue(parsed) {
    if (!parsed)
        return null;
    // Handle CSS variables
    if (parsed.type === 'variable') {
        return (0, css_variable_1.toCSSValue)(parsed);
    }
    // Handle keyword values (both overflow-specific and global)
    if (parsed.type === 'keyword') {
        return parsed.keyword;
    }
    return null;
}