antd-mobile-taro-ui/2x/es/components/mask/mask.js

以antd-mobile为设计标准，基于taro框架的微信小程序组件库

import { withNativeProps } from 'antd-mobile/es/utils/native-props';
import React, { useEffect, useMemo, useRef, useState } from 'react';
import { useUnmountedRef } from 'ahooks';
import { mergeProps } from 'antd-mobile/es/utils/with-default-props';
import { ShouldRender } from 'antd-mobile/es/utils/should-render';
import { withStopPropagation } from 'antd-mobile/es/utils/with-stop-propagation';
import { View } from '@tarojs/components';
import { useConfig } from '../config-provider';
import { useLockScroll } from '../../utils/use-lock-scroll';
const classPrefix = `adm-mask`;
const opacityRecord = {
  default: 0.55,
  thin: 0.35,
  thick: 0.75
};
const defaultProps = {
  visible: true,
  destroyOnClose: false,
  forceRender: false,
  color: 'black',
  opacity: 'default',
  disableBodyScroll: true,
  stopPropagation: ['click']
};
export const Mask = p => {
  const props = mergeProps(defaultProps, p);
  const {
    locale
  } = useConfig();
  const ref = useRef(null);
  useLockScroll(props.visible && props.disableBodyScroll);
  const background = useMemo(() => {
    var _a;

    const opacity = (_a = opacityRecord[props.opacity]) !== null && _a !== void 0 ? _a : props.opacity;
    const rgb = props.color === 'white' ? '255, 255, 255' : '0, 0, 0';
    return `rgba(${rgb}, ${opacity})`;
  }, [props.color, props.opacity]);
  const [active, setActive] = useState(props.visible);
  const unmountedRef = useUnmountedRef();
  const init = useRef(true);
  const [wrapperVisible, setWrapperVisible] = useState(props.visible);
  useEffect(() => {
    if (init.current) return;
    if (unmountedRef.current) return;
    setActive(props.visible);

    if (props.visible) {
      setWrapperVisible(props.visible);
      setTimeout(() => {
        var _a;

        (_a = props.afterShow) === null || _a === void 0 ? void 0 : _a.call(props);
      }, 500);
    } else {
      setTimeout(() => {
        var _a;

        setWrapperVisible(props.visible);
        (_a = props.afterClose) === null || _a === void 0 ? void 0 : _a.call(props);
      }, 500);
    }
  }, [props.visible]);
  useEffect(() => {
    if (init.current) {
      setActive(true);
      init.current = false;
    }
  }, []);
  const node = withStopPropagation(props.stopPropagation, withNativeProps(props, React.createElement(View, {
    className: classPrefix,
    ref: ref,
    style: Object.assign(Object.assign({}, props.style), {
      background,
      opacity: props.visible ? 1 : 0,
      display: wrapperVisible ? undefined : 'none'
    }),
    onClick: e => {
      var _a;

      if (e.target === e.currentTarget) {
        (_a = props.onMaskClick) === null || _a === void 0 ? void 0 : _a.call(props, e);
      }
    }
  }, props.onMaskClick && React.createElement(View, {
    className: `${classPrefix}-aria-button`,
    "aria-label": locale.Mask.name,
    onClick: props.onMaskClick
  }), React.createElement(View, {
    className: `${classPrefix}-content`
  }, props.children))));
  return React.createElement(ShouldRender, {
    active: active,
    forceRender: props.forceRender,
    destroyOnClose: props.destroyOnClose
  }, node);
};