@coreui/react/dist/esm/components/carousel/CCarouselItem.js

UI Components Library for React.js

import { __rest, __assign } from '../../node_modules/tslib/tslib.es6.js';
import React, { forwardRef, useContext, useRef, useState, useEffect } from 'react';
import PropTypes from 'prop-types';
import classNames from '../../_virtual/index.js';
import { useForkedRef } from '../../hooks/useForkedRef.js';
import '@popperjs/core';
import { CCarouselContext } from './CCarouselContext.js';

var CCarouselItem = forwardRef(function (_a, ref) {
    var children = _a.children, className = _a.className, active = _a.active, direction = _a.direction, _b = _a.interval, interval = _b === void 0 ? false : _b, rest = __rest(_a, ["children", "className", "active", "direction", "interval"]);
    var _c = useContext(CCarouselContext), setAnimating = _c.setAnimating, setCustomInterval = _c.setCustomInterval;
    var carouselItemRef = useRef(null);
    var forkedRef = useForkedRef(ref, carouselItemRef);
    var prevActive = useRef(undefined);
    var _d = useState(), directionClassName = _d[0], setDirectionClassName = _d[1];
    var _e = useState(), orderClassName = _e[0], setOrderClassName = _e[1];
    var _f = useState(active && 'active'), activeClassName = _f[0], setActiveClassName = _f[1];
    var _g = useState(0), count = _g[0], setCount = _g[1];
    useEffect(function () {
        if (active) {
            setCustomInterval(interval);
            if (count !== 0)
                setOrderClassName("carousel-item-".concat(direction));
        }
        if (prevActive.current && !active) {
            setActiveClassName('active');
        }
        if (active || prevActive.current) {
            setTimeout(function () {
                var _a;
                if (count !== 0) {
                    // @ts-expect-error reflow is necessary to proper transition
                    // eslint-disable-next-line @typescript-eslint/no-unused-vars
                    (_a = carouselItemRef.current) === null || _a === void 0 ? void 0 : _a.offsetHeight;
                    setDirectionClassName("carousel-item-".concat(direction === 'next' ? 'start' : 'end'));
                }
            }, 0);
        }
        prevActive.current = active;
        if (count === 0)
            setCount(count + 1);
    }, [active]);
    useEffect(function () {
        var _a, _b;
        (_a = carouselItemRef.current) === null || _a === void 0 ? void 0 : _a.addEventListener('transitionstart', function () {
            active && setAnimating(true);
        });
        (_b = carouselItemRef.current) === null || _b === void 0 ? void 0 : _b.addEventListener('transitionend', function () {
            active && setAnimating(false);
            setDirectionClassName('');
            setOrderClassName('');
            if (active) {
                setActiveClassName('active');
            }
            if (!active) {
                setActiveClassName('');
            }
        });
        return function () {
            var _a, _b;
            (_a = carouselItemRef.current) === null || _a === void 0 ? void 0 : _a.removeEventListener('transitionstart', function () {
                active && setAnimating(true);
            });
            (_b = carouselItemRef.current) === null || _b === void 0 ? void 0 : _b.removeEventListener('transitionend', function () {
                active && setAnimating(false);
                setDirectionClassName('');
                setOrderClassName('');
                if (active) {
                    setActiveClassName('active');
                }
                if (!active) {
                    setActiveClassName('');
                }
            });
        };
    });
    return (React.createElement("div", __assign({ className: classNames('carousel-item', activeClassName, directionClassName, orderClassName, className), ref: forkedRef }, rest), children));
});
CCarouselItem.propTypes = {
    active: PropTypes.bool,
    children: PropTypes.node,
    className: PropTypes.string,
    direction: PropTypes.string,
    interval: PropTypes.oneOfType([PropTypes.bool, PropTypes.number]),
};
CCarouselItem.displayName = 'CCarouselItem';

export { CCarouselItem };
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