mirror of
https://github.com/ant-design/ant-design.git
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1fc374495f
* chore: init test * test: rootClassName inject * test: part of test * chore: patch qrcode rootCls * chore: part rootClassName * chore: part rootClassName * test: more test * test: more test * test: more test * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * test: more test * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: part rootClassName * chore: fix lint * chore: fix lint * chore: ignore part of lint * test: update snapshot * test: fix test case * chore: fix node test * chore: adjust render logic * fix: test * test: update snapshot * test: update * refactor * chore: fix require module logic
90 lines
2.9 KiB
TypeScript
90 lines
2.9 KiB
TypeScript
import VerticalAlignTopOutlined from '@ant-design/icons/VerticalAlignTopOutlined';
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import classNames from 'classnames';
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import CSSMotion from 'rc-motion';
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import React, { memo, useContext, useEffect, useRef, useState } from 'react';
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import FloatButton, { floatButtonPrefixCls } from './FloatButton';
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import type { ConfigConsumerProps } from '../config-provider';
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import { ConfigContext } from '../config-provider';
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import getScroll from '../_util/getScroll';
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import scrollTo from '../_util/scrollTo';
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import throttleByAnimationFrame from '../_util/throttleByAnimationFrame';
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import FloatButtonGroupContext from './context';
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import type { BackTopProps, FloatButtonProps, FloatButtonShape } from './interface';
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import useStyle from './style';
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const BackTop: React.FC<BackTopProps> = (props) => {
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const {
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prefixCls: customizePrefixCls,
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className,
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type = 'default',
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shape = 'circle',
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visibilityHeight = 400,
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icon = <VerticalAlignTopOutlined />,
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target,
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onClick,
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duration = 450,
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...restProps
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} = props;
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const [visible, setVisible] = useState<boolean>(visibilityHeight === 0);
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const ref = useRef<HTMLAnchorElement | HTMLButtonElement>(null);
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const getDefaultTarget = (): HTMLElement | Document | Window =>
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ref.current && ref.current.ownerDocument ? ref.current.ownerDocument : window;
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const handleScroll = throttleByAnimationFrame(
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(e: React.UIEvent<HTMLElement, UIEvent> | { target: any }) => {
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const scrollTop = getScroll(e.target, true);
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setVisible(scrollTop >= visibilityHeight);
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},
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);
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useEffect(() => {
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const getTarget = target || getDefaultTarget;
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const container = getTarget();
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handleScroll({ target: container });
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container?.addEventListener('scroll', handleScroll);
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return () => {
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handleScroll.cancel();
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container?.removeEventListener('scroll', handleScroll);
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};
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}, [target]);
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const scrollToTop: React.MouseEventHandler<HTMLDivElement> = (e) => {
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scrollTo(0, { getContainer: target || getDefaultTarget, duration });
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onClick?.(e);
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};
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const { getPrefixCls } = useContext<ConfigConsumerProps>(ConfigContext);
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const prefixCls = getPrefixCls(floatButtonPrefixCls, customizePrefixCls);
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const rootPrefixCls = getPrefixCls();
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const [wrapSSR] = useStyle(prefixCls);
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const groupShape = useContext<FloatButtonShape | undefined>(FloatButtonGroupContext);
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const mergeShape = groupShape || shape;
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const contentProps: FloatButtonProps = { prefixCls, icon, type, shape: mergeShape, ...restProps };
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return wrapSSR(
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<CSSMotion visible={visible} motionName={`${rootPrefixCls}-fade`}>
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{({ className: motionClassName }) => (
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<FloatButton
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ref={ref}
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{...contentProps}
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onClick={scrollToTop}
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className={classNames(className, motionClassName)}
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/>
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)}
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</CSSMotion>,
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);
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};
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if (process.env.NODE_ENV !== 'production') {
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BackTop.displayName = 'BackTop';
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}
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export default memo(BackTop);
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