@adminium/ui
Version:
Arco Design React UI Library.
82 lines (81 loc) • 3.58 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __rest = (this && this.__rest) || function (s, e) {
var t = {};
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
t[p] = s[p];
if (s != null && typeof Object.getOwnPropertySymbols === "function")
for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
t[p[i]] = s[p[i]];
}
return t;
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
Object.defineProperty(exports, "__esModule", { value: true });
var react_1 = require("react");
var useIntersectionObserver_1 = __importStar(require("./useIntersectionObserver"));
function useInView(props) {
var hasInView = props.hasInView, _a = props.unobserverOnEnter, unobserverOnEnter = _a === void 0 ? true : _a, onChange = props.onChange, target = props.target, rest = __rest(props, ["hasInView", "unobserverOnEnter", "onChange", "target"]);
// if intersect observer is not supported
var _b = __read((0, react_1.useState)(useIntersectionObserver_1.supportIntersectionObserver ? hasInView : true), 2), inView = _b[0], setInView = _b[1];
var observerCallback = (0, react_1.useCallback)(function (_a, observer) {
var _b = __read(_a, 1), entry = _b[0];
var inThreshold = observer.thresholds.some(function (t) { return entry.intersectionRatio >= t; });
var newInView = inThreshold && entry.isIntersecting;
setInView(newInView);
onChange === null || onChange === void 0 ? void 0 : onChange(newInView, entry);
if (newInView && unobserverOnEnter) {
observer.unobserve(entry.target);
}
}, [onChange, unobserverOnEnter]);
var _c = (0, useIntersectionObserver_1.default)(observerCallback, rest), cor = _c.cor, dor = _c.dor, observer = _c.observer;
(0, react_1.useEffect)(function () {
var noNeedObserver = hasInView && unobserverOnEnter;
if (noNeedObserver) {
dor();
}
else if (target) {
cor(target);
}
return dor;
}, [target, hasInView, unobserverOnEnter]);
return {
inView: inView,
observer: observer,
};
}
exports.default = useInView;