@fruits-chain/react-native-xiaoshu/lib/commonjs/overlay/overlay.js

🌈 React Native UI library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _isUndefined = _interopRequireDefault(require("lodash/isUndefined"));

var _react = _interopRequireWildcard(require("react"));

var _reactNative = require("react-native");

var _helpers = require("../helpers");

var _theme = _interopRequireDefault(require("../theme"));

var _style = require("./style");

function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Overlay 遮罩层
 * @description 创建一个遮罩层，用于强调特定的页面元素，并阻止用户进行其他操作。
 * TODO 统计遮罩层数量，动态控制状态栏的颜色，避免黑色遮罩层配合黑色文字的状态栏。
 */
const Overlay = _ref => {
  let {
    children,
    style,
    zIndex,
    visible = false,
    duration,
    onPress,
    onRequestClose,
    backgroundColor
  } = _ref;

  const TOKENS = _theme.default.useThemeTokens();

  const CV = _theme.default.createVar(TOKENS, _style.varCreator);

  const fadeAnim = (0, _react.useRef)(new _reactNative.Animated.Value(0));
  const fadeInstance = (0, _react.useRef)(null);
  const [localVisible, setLocalVisible] = (0, _react.useState)(visible);
  duration = (0, _helpers.getDefaultValue)(duration, TOKENS.animation_duration_base);
  backgroundColor = (0, _helpers.getDefaultValue)(backgroundColor, CV.overlay_background_color); // 监听状态变化，执行动画

  (0, _react.useEffect)(() => {
    if (visible) {
      setLocalVisible(true);
    }

    fadeInstance.current = _reactNative.Animated.timing(fadeAnim.current, // 动画中的变量值
    {
      toValue: visible ? 1 : 0,
      duration: duration,
      useNativeDriver: true
    });
    fadeInstance.current.start(_ref2 => {
      let {
        finished
      } = _ref2;

      if (finished) {
        fadeInstance.current = null;

        if (!visible) {
          setLocalVisible(false);
        }
      }
    });
    return () => {
      // 停止动画
      if (fadeInstance.current) {
        fadeInstance.current.stop();
        fadeInstance.current = null;
      }
    };
  }, [visible, duration]); // Android 返回按钮

  (0, _react.useEffect)(() => {
    const backHandler = _reactNative.BackHandler.addEventListener('hardwareBackPress', () => {
      if (typeof onRequestClose === 'function' && visible) {
        return onRequestClose();
      }

      return false;
    });

    return () => backHandler.remove();
  }, [visible, onRequestClose]);

  if (!localVisible) {
    // TODO 优化文档报错
    // 直接返回 null dumi 报错 -、-
    // eslint-disable-next-line react/jsx-no-useless-fragment
    return /*#__PURE__*/_react.default.createElement(_react.default.Fragment, null);
  }

  return /*#__PURE__*/_react.default.createElement(_reactNative.Animated.View, {
    style: [STYLES.overlay, localVisible ? STYLES.overlay_active : null, {
      opacity: fadeAnim.current,
      backgroundColor: backgroundColor,
      zIndex: !(0, _isUndefined.default)(zIndex) ? zIndex : CV.overlay_z_index
    }]
  }, /*#__PURE__*/_react.default.createElement(_reactNative.TouchableOpacity, {
    style: [STYLES.touchable, style],
    activeOpacity: 1,
    onPress: onPress
  }, children));
};

const STYLES = _reactNative.StyleSheet.create({
  overlay: {
    position: 'relative',
    left: 0,
    right: 0,
    top: 0,
    bottom: 0
  },
  overlay_active: {
    position: 'absolute'
  },
  touchable: {
    flex: 1
  }
});

var _default = /*#__PURE__*/(0, _react.memo)(Overlay);

exports.default = _default;
//# sourceMappingURL=overlay.js.map