@catho/quantum
Version:
Catho react components
124 lines (123 loc) • 6 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _react = require("react");
var _propTypes = _interopRequireDefault(require("prop-types"));
var _styledComponents = _interopRequireDefault(require("styled-components"));
var _Loader = _interopRequireDefault(require("./Loader"));
var _useMutationObserver = require("./hooks/useMutationObserver");
var _jsxRuntime = require("react/jsx-runtime");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
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$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; } /* eslint-disable no-undef */
var InfiniteScrollWrapper = _styledComponents["default"].div.withConfig({
displayName: "InfiniteScroll__InfiniteScrollWrapper",
componentId: "sc-otcxrg-0"
})(["display:flex;flex-direction:column;height:100%;scroll-behavior:smooth;overflow-x:none;overflow-y:auto;"]);
var InfiniteScrollBase = function InfiniteScrollBase(_ref, ref) {
var children = _ref.children,
_ref$reverse = _ref.reverse,
reverse = _ref$reverse === void 0 ? false : _ref$reverse,
_ref$onScrollEnd = _ref.onScrollEnd,
onScrollEnd = _ref$onScrollEnd === void 0 ? function () {} : _ref$onScrollEnd,
loading = _ref.loading;
var _useState = (0, _react.useState)(),
_useState2 = _slicedToArray(_useState, 2),
scrollHeight = _useState2[0],
setScrollHeight = _useState2[1];
var _useState3 = (0, _react.useState)(false),
_useState4 = _slicedToArray(_useState3, 2),
dispatchObserverEvent = _useState4[0],
setDispatchObserverEvent = _useState4[1];
var wrapperRef = (0, _react.useRef)();
var triggerRef = (0, _react.useRef)();
var handleObserver = function handleObserver(_ref2) {
var _ref3 = _slicedToArray(_ref2, 1),
target = _ref3[0];
if (target.isIntersecting && target.intersectionRatio) {
setDispatchObserverEvent(true);
}
};
var handleMutations = (0, _react.useCallback)(function (mutations) {
if ((mutations === null || mutations === void 0 ? void 0 : mutations.length) > 1) {
var wrapperEl = wrapperRef.current;
setScrollHeight(function (state) {
return wrapperEl.scrollHeight - state;
});
}
}, []);
if (reverse) {
(0, _useMutationObserver.useMutationObservable)({
targetEl: wrapperRef.current,
callback: handleMutations
});
}
var handleScrollToStart = (0, _react.useCallback)(function () {
var _wrapperRef$current;
setScrollHeight(wrapperRef === null || wrapperRef === void 0 || (_wrapperRef$current = wrapperRef.current) === null || _wrapperRef$current === void 0 ? void 0 : _wrapperRef$current.scrollHeight);
}, []);
(0, _react.useImperativeHandle)(ref, function () {
return {
scrollToStart: handleScrollToStart
};
});
(0, _react.useEffect)(function () {
var wrapperEl = wrapperRef.current;
var triggerEl = triggerRef.current;
var intersectionObserver = new IntersectionObserver(handleObserver, {
root: wrapperEl,
threshold: 1
});
intersectionObserver.observe(triggerEl);
if (reverse) {
setScrollHeight(wrapperEl.scrollHeight);
}
return function () {
intersectionObserver.unobserve(triggerEl);
};
}, []);
(0, _react.useEffect)(function () {
if (reverse) {
InfiniteScrollBase.handleScrollPosition(wrapperRef.current, scrollHeight);
}
}, [scrollHeight]);
(0, _react.useEffect)(function () {
if (dispatchObserverEvent) {
onScrollEnd();
setDispatchObserverEvent(false);
}
}, [dispatchObserverEvent]);
if (reverse) {
return /*#__PURE__*/(0, _jsxRuntime.jsxs)(InfiniteScrollWrapper, {
ref: wrapperRef,
children: [loading && /*#__PURE__*/(0, _jsxRuntime.jsx)(_Loader["default"], {}), /*#__PURE__*/(0, _jsxRuntime.jsx)("span", {
ref: triggerRef
}), children]
});
}
return /*#__PURE__*/(0, _jsxRuntime.jsxs)(InfiniteScrollWrapper, {
ref: wrapperRef,
children: [children, /*#__PURE__*/(0, _jsxRuntime.jsx)("span", {
ref: triggerRef
}), loading && /*#__PURE__*/(0, _jsxRuntime.jsx)(_Loader["default"], {})]
});
};
InfiniteScrollBase.handleScrollPosition = function (element, height) {
element.scrollTo({
top: height,
behavior: 'instant'
});
};
var InfiniteScroll = /*#__PURE__*/(0, _react.forwardRef)(InfiniteScrollBase);
InfiniteScroll.propTypes = {
children: _propTypes["default"].element.isRequired,
reverse: _propTypes["default"].bool,
onScrollEnd: _propTypes["default"].func
};
var _default = exports["default"] = InfiniteScroll;