@chatui/core
Version:
The React library for Chatbot UI
83 lines (82 loc) • 3.83 kB
JavaScript
"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
var _typeof = require("@babel/runtime/helpers/typeof");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.ScrollGrid = ScrollGrid;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = _interopRequireWildcard(require("react"));
var _useLatest = require("../../hooks/useLatest");
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); }
var indicatorWidth = 20;
function ScrollGrid(_ref) {
var _ref$wrap = _ref.wrap,
wrap = _ref$wrap === void 0 ? false : _ref$wrap,
children = _ref.children,
onIndicatorToggle = _ref.onIndicatorToggle;
var _useState = (0, _react.useState)(false),
_useState2 = (0, _slicedToArray2.default)(_useState, 2),
showIndicator = _useState2[0],
setShowIndicator = _useState2[1];
var _useState3 = (0, _react.useState)(0),
_useState4 = (0, _slicedToArray2.default)(_useState3, 2),
barWidth = _useState4[0],
setBarWidth = _useState4[1];
var _useState5 = (0, _react.useState)(0),
_useState6 = (0, _slicedToArray2.default)(_useState5, 2),
barLeft = _useState6[0],
setBarLeft = _useState6[1];
var scrollerRef = (0, _react.useRef)(null);
var ratioRef = (0, _react.useRef)(0.04);
var onIndicatorToggleRef = (0, _useLatest.useLatest)(onIndicatorToggle);
(0, _react.useEffect)(function () {
if (wrap) return;
function updateIndicator() {
var scroller = scrollerRef.current;
if (!scroller) return;
var scrollWidth = scroller.scrollWidth,
clientWidth = scroller.clientWidth;
if (scrollWidth === clientWidth) {
setShowIndicator(false);
return;
}
var ratio = indicatorWidth / scrollWidth;
ratioRef.current = ratio;
setShowIndicator(true);
setBarWidth(clientWidth * ratio);
}
updateIndicator();
window.addEventListener('resize', updateIndicator);
return function () {
window.removeEventListener('resize', updateIndicator);
};
}, [wrap]);
(0, _react.useEffect)(function () {
var _onIndicatorToggleRef;
(_onIndicatorToggleRef = onIndicatorToggleRef.current) === null || _onIndicatorToggleRef === void 0 || _onIndicatorToggleRef.call(onIndicatorToggleRef, showIndicator);
}, [onIndicatorToggleRef, showIndicator]);
var handleScroll = function handleScroll(e) {
var _ref2 = e.target,
scrollLeft = _ref2.scrollLeft;
setBarLeft(scrollLeft * ratioRef.current);
};
return /*#__PURE__*/_react.default.createElement("div", {
className: "ScrollGrid",
"data-wrap": wrap
}, /*#__PURE__*/_react.default.createElement("div", {
className: "ScrollGrid-scroller",
ref: scrollerRef,
onScroll: wrap ? undefined : handleScroll
}, /*#__PURE__*/_react.default.createElement("div", {
className: "ScrollGrid-inner"
}, children)), showIndicator && /*#__PURE__*/_react.default.createElement("div", {
className: "ScrollGrid-indicator"
}, /*#__PURE__*/_react.default.createElement("div", {
className: "ScrollGrid-indicatorBar",
style: {
width: barWidth,
transform: "translateX(".concat(barLeft, "px)")
}
})));
}