react-native-web-internals
Version:
React Native for Web
78 lines (77 loc) • 3.69 kB
JavaScript
;
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf, __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: !0 });
}, __copyProps = (to, from, except, desc) => {
if (from && typeof from == "object" || typeof from == "function")
for (let key of __getOwnPropNames(from))
!__hasOwnProp.call(to, key) && key !== except && __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: !0 }) : target,
mod
)), __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: !0 }), mod);
var useElementLayout_exports = {};
__export(useElementLayout_exports, {
default: () => useElementLayout
});
module.exports = __toCommonJS(useElementLayout_exports);
var import_canUseDOM = __toESM(require("../canUseDOM")), import_UIManager = __toESM(require("../UIManager/index")), import_useLayoutEffect = __toESM(require("../useLayoutEffect/index")), DOM_LAYOUT_HANDLER_NAME = "__reactLayoutHandler", didWarn = !import_canUseDOM.default, resizeObserver = null;
function getResizeObserver() {
return import_canUseDOM.default && typeof window.ResizeObserver < "u" ? resizeObserver == null && (resizeObserver = new window.ResizeObserver(function(entries) {
entries.forEach(function(entry) {
var node = entry.target, onLayout = node[DOM_LAYOUT_HANDLER_NAME];
typeof onLayout == "function" && import_UIManager.default.measure(node, function(x, y, width, height, left, top) {
var event = {
// @ts-ignore
nativeEvent: {
layout: {
x,
y,
width,
height,
left,
top
}
},
timeStamp: Date.now()
};
Object.defineProperty(event.nativeEvent, "target", {
enumerable: !0,
get: function() {
return entry.target;
}
}), onLayout(event);
});
});
})) : didWarn || process.env.NODE_ENV !== "production" && process.env.NODE_ENV !== "test" && (console.warn("onLayout relies on ResizeObserver which is not supported by your browser. Please include a polyfill, e.g., https://github.com/que-etc/resize-observer-polyfill."), didWarn = !0), resizeObserver;
}
function useElementLayout(ref, onLayout) {
var observer = getResizeObserver();
(0, import_useLayoutEffect.default)(function() {
var node = ref.current;
node != null && (node[DOM_LAYOUT_HANDLER_NAME] = onLayout);
}, [
ref,
onLayout
]), (0, import_useLayoutEffect.default)(function() {
var node = ref.current;
return node != null && observer != null && (typeof node[DOM_LAYOUT_HANDLER_NAME] == "function" ? observer.observe(node) : observer.unobserve(node)), function() {
node != null && observer != null && observer.unobserve(node);
};
}, [
ref,
observer
]);
}
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