@activecollab/components/dist/cjs/components/ScrollShadow/ScrollShadow.js

ActiveCollab Components

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.ScrollShadow = void 0;
var _react = _interopRequireWildcard(require("react"));
var _classnames = _interopRequireDefault(require("classnames"));
var _Styles = require("./Styles");
var _excluded = ["children", "className", "disableVertical", "disableHorizontal", "invertHorizontal", "invertVertical", "innerColor", "outerColor"];
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
function _interopRequireWildcard(e, t) { if ("function" == typeof WeakMap) var r = new WeakMap(), n = new WeakMap(); return (_interopRequireWildcard = function _interopRequireWildcard(e, t) { if (!t && e && e.__esModule) return e; var o, i, f = { __proto__: null, default: e }; if (null === e || "object" != typeof e && "function" != typeof e) return f; if (o = t ? n : r) { if (o.has(e)) return o.get(e); o.set(e, f); } for (var _t in e) "default" !== _t && {}.hasOwnProperty.call(e, _t) && ((i = (o = Object.defineProperty) && Object.getOwnPropertyDescriptor(e, _t)) && (i.get || i.set) ? o(f, _t, i) : f[_t] = e[_t]); return f; })(e, t); }
function _extends() { return _extends = Object.assign ? Object.assign.bind() : function (n) { for (var e = 1; e < arguments.length; e++) { var t = arguments[e]; for (var r in t) ({}).hasOwnProperty.call(t, r) && (n[r] = t[r]); } return n; }, _extends.apply(null, arguments); }
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
function _objectWithoutProperties(e, t) { if (null == e) return {}; var o, r, i = _objectWithoutPropertiesLoose(e, t); if (Object.getOwnPropertySymbols) { var n = Object.getOwnPropertySymbols(e); for (r = 0; r < n.length; r++) o = n[r], -1 === t.indexOf(o) && {}.propertyIsEnumerable.call(e, o) && (i[o] = e[o]); } return i; }
function _objectWithoutPropertiesLoose(r, e) { if (null == r) return {}; var t = {}; for (var n in r) if ({}.hasOwnProperty.call(r, n)) { if (-1 !== e.indexOf(n)) continue; t[n] = r[n]; } return t; }
var ScrollShadow = exports.ScrollShadow = /*#__PURE__*/(0, _react.forwardRef)(function (_ref, ref) {
  var children = _ref.children,
    className = _ref.className,
    _ref$disableVertical = _ref.disableVertical,
    disableVertical = _ref$disableVertical === void 0 ? false : _ref$disableVertical,
    _ref$disableHorizonta = _ref.disableHorizontal,
    disableHorizontal = _ref$disableHorizonta === void 0 ? false : _ref$disableHorizonta,
    _ref$invertHorizontal = _ref.invertHorizontal,
    invertHorizontal = _ref$invertHorizontal === void 0 ? false : _ref$invertHorizontal,
    _ref$invertVertical = _ref.invertVertical,
    invertVertical = _ref$invertVertical === void 0 ? false : _ref$invertVertical,
    innerColor = _ref.innerColor,
    outerColor = _ref.outerColor,
    rest = _objectWithoutProperties(_ref, _excluded);
  var _useState = (0, _react.useState)({
      top: 0,
      right: 0,
      bottom: 0,
      left: 0
    }),
    _useState2 = _slicedToArray(_useState, 2),
    opacity = _useState2[0],
    setOpacity = _useState2[1];
  var handleScroll = (0, _react.useCallback)(function (event) {
    var _ref2 = event.target,
      scrollHeight = _ref2.scrollHeight,
      clientHeight = _ref2.clientHeight,
      scrollWidth = _ref2.scrollWidth,
      clientWidth = _ref2.clientWidth;
    var _ref3 = event.target,
      scrollTop = _ref3.scrollTop,
      scrollLeft = _ref3.scrollLeft;
    if (scrollLeft < 0) {
      scrollLeft *= -1;
    }
    if (scrollTop < 0) {
      scrollTop *= -1;
    }
    setOpacity(function (prevState) {
      var top = 1 / 20 * Math.min(scrollTop, 20);
      var bottomScrollTop = scrollHeight - clientHeight;
      var bottom = 1 / 20 * (bottomScrollTop - Math.max(scrollTop, bottomScrollTop - 20));
      var left = 1 / 20 * Math.min(scrollLeft, 20);
      var offset = scrollWidth - clientWidth;
      var right = 1 / 20 * (offset - Math.max(scrollLeft, offset - 20));
      var newState = {
        top: 0,
        bottom: 0,
        left: 0,
        right: 0
      };
      if (!disableVertical) {
        newState.top = invertVertical ? bottom : top;
        newState.bottom = invertVertical ? top : bottom;
      }
      if (!disableHorizontal) {
        newState.left = invertHorizontal ? right : left;
        newState.right = invertHorizontal ? left : right;
      }
      if (newState.top !== prevState.top || newState.bottom !== prevState.bottom || newState.left !== prevState.left || newState.right !== prevState.right) {
        return newState;
      }
      return prevState;
    });
  }, [invertHorizontal, invertVertical, disableVertical, disableHorizontal]);
  return /*#__PURE__*/_react.default.createElement(_Styles.StyledScrollShadow, _extends({}, rest, {
    ref: ref,
    className: (0, _classnames.default)("c-scroll-shadow", className)
  }), children({
    onScroll: handleScroll
  }), !disableVertical ? /*#__PURE__*/_react.default.createElement(_react.default.Fragment, null, /*#__PURE__*/_react.default.createElement(_Styles.StyledScrollShadowTop, {
    $innerColor: innerColor,
    $outerColor: outerColor,
    style: {
      opacity: opacity.top
    }
  }), /*#__PURE__*/_react.default.createElement(_Styles.StyledScrollShadowBottom, {
    $innerColor: innerColor,
    $outerColor: outerColor,
    style: {
      opacity: opacity.bottom
    }
  })) : null, !disableHorizontal ? /*#__PURE__*/_react.default.createElement(_react.default.Fragment, null, /*#__PURE__*/_react.default.createElement(_Styles.StyledScrollShadowLeft, {
    $innerColor: innerColor,
    $outerColor: outerColor,
    style: {
      opacity: opacity.left
    }
  }), /*#__PURE__*/_react.default.createElement(_Styles.StyledScrollShadowRight, {
    $innerColor: innerColor,
    $outerColor: outerColor,
    style: {
      opacity: opacity.right
    }
  })) : null);
});
ScrollShadow.displayName = "ScrollShadow";
//# sourceMappingURL=ScrollShadow.js.map