@fruits-chain/react-native-xiaoshu/lib/module/dropdown/dropdown-popup.js

🌈 React Native UI library

"use strict";

import React, { useCallback, useMemo, memo } from 'react';
import { TouchableWithoutFeedback, View, useWindowDimensions } from 'react-native';
import { useSafeAreaInsets } from 'react-native-safe-area-context';
import useState from "../hooks/useStateUpdate.js";
import Popup from "../popup/popup.js";
import Theme from "../theme/index.js";
import { useDropdownConfig } from "./context.js";
import { varCreator } from "./style.js";
import { jsx as _jsx, jsxs as _jsxs, Fragment as _Fragment } from "react/jsx-runtime";
const POPUP_STYLE = {
  backgroundColor: 'transparent'
};
const DropdownPopup = ({
  zIndex,
  closeOnPressOutside = true,
  targetHeight,
  targetPageY,
  onPressShade,
  safeAreaInset = true,
  showShade = true,
  contentStyle,
  children,
  ...restProps
}) => {
  const insets = useSafeAreaInsets();
  const {
    height: windowHeight
  } = useWindowDimensions();
  const {
    theme
  } = useDropdownConfig();
  const [CV] = Theme.useStyle({
    varCreator,
    theme
  });
  const [wrapperStyle, setWrapperStyle] = useState({
    maxHeight: 0
  });

  /** 弹出层可以的最大高度 */
  const onLayoutPlace = useCallback(e => {
    setWrapperStyle({
      maxHeight: e.nativeEvent.layout.height
    });
  }, []);
  const [_isBottom, _shadeStyles, _boxStyles] = useMemo(() => {
    const topHeight = targetPageY - insets.top;
    const bottomHeight = windowHeight - targetPageY - targetHeight - insets.bottom;
    const isBottom = topHeight >= bottomHeight;
    const shadeStyles = {
      position: 'absolute',
      left: 0,
      right: 0,
      zIndex,
      // backgroundColor: '#f30', // to test ui

      // state.shadeStyle,
      ...(isBottom ? {
        top: targetPageY,
        bottom: 0
      } : {
        top: 0,
        height: targetPageY + targetHeight
      })
    };
    const boxStyles = {
      position: 'absolute',
      left: 0,
      right: 0,
      zIndex,
      overflow: 'hidden',
      // backgroundColor: '#000', // to test ui

      // state.ctxStyle,
      ...(isBottom ? {
        top: 0,
        height: targetPageY
      } : {
        top: targetPageY + targetHeight,
        bottom: 0
      })
    };
    return [isBottom, shadeStyles, boxStyles];
  }, [insets.bottom, insets.top, targetHeight, targetPageY, windowHeight, zIndex]);
  const placeholderHeight = _isBottom ? insets.top : insets.bottom;
  const placeholderJSX = /*#__PURE__*/_jsx(TouchableWithoutFeedback, {
    onPress: closeOnPressOutside ? onPressShade : undefined,
    children: /*#__PURE__*/_jsx(View, {
      style: {
        height: placeholderHeight
      }
    })
  });
  return /*#__PURE__*/_jsxs(_Fragment, {
    children: [restProps.visible && showShade ? /*#__PURE__*/_jsx(TouchableWithoutFeedback, {
      onPress: closeOnPressOutside ? onPressShade : undefined,
      children: /*#__PURE__*/_jsx(View, {
        style: _shadeStyles
      })
    }) : null, /*#__PURE__*/_jsx(View, {
      style: _boxStyles,
      pointerEvents: "box-none",
      onLayout: onLayoutPlace,
      children: /*#__PURE__*/_jsx(Popup, {
        ...restProps,
        style: POPUP_STYLE,
        position: _isBottom ? 'bottom' : 'top',
        children: /*#__PURE__*/_jsxs(View, {
          style: wrapperStyle,
          children: [_isBottom && safeAreaInset ? placeholderJSX : null, /*#__PURE__*/_jsx(View, {
            style: [{
              maxHeight: wrapperStyle.maxHeight - placeholderHeight,
              backgroundColor: CV.dropdown_background_color
            }, contentStyle],
            children: children
          }), !_isBottom && safeAreaInset ? placeholderJSX : null]
        })
      })
    })]
  });
};
export default /*#__PURE__*/memo(DropdownPopup);
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