51 lines
2.0 KiB
JavaScript
51 lines
2.0 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.useMergeRefs = void 0;
|
|
var tslib_1 = require("tslib");
|
|
var React = tslib_1.__importStar(require("react"));
|
|
var assignRef_1 = require("./assignRef");
|
|
var useRef_1 = require("./useRef");
|
|
var useIsomorphicLayoutEffect = typeof window !== 'undefined' ? React.useLayoutEffect : React.useEffect;
|
|
var currentValues = new WeakMap();
|
|
/**
|
|
* Merges two or more refs together providing a single interface to set their value
|
|
* @param {RefObject|Ref} refs
|
|
* @returns {MutableRefObject} - a new ref, which translates all changes to {refs}
|
|
*
|
|
* @see {@link mergeRefs} a version without buit-in memoization
|
|
* @see https://github.com/theKashey/use-callback-ref#usemergerefs
|
|
* @example
|
|
* const Component = React.forwardRef((props, ref) => {
|
|
* const ownRef = useRef();
|
|
* const domRef = useMergeRefs([ref, ownRef]); // 👈 merge together
|
|
* return <div ref={domRef}>...</div>
|
|
* }
|
|
*/
|
|
function useMergeRefs(refs, defaultValue) {
|
|
var callbackRef = (0, useRef_1.useCallbackRef)(defaultValue || null, function (newValue) {
|
|
return refs.forEach(function (ref) { return (0, assignRef_1.assignRef)(ref, newValue); });
|
|
});
|
|
// handle refs changes - added or removed
|
|
useIsomorphicLayoutEffect(function () {
|
|
var oldValue = currentValues.get(callbackRef);
|
|
if (oldValue) {
|
|
var prevRefs_1 = new Set(oldValue);
|
|
var nextRefs_1 = new Set(refs);
|
|
var current_1 = callbackRef.current;
|
|
prevRefs_1.forEach(function (ref) {
|
|
if (!nextRefs_1.has(ref)) {
|
|
(0, assignRef_1.assignRef)(ref, null);
|
|
}
|
|
});
|
|
nextRefs_1.forEach(function (ref) {
|
|
if (!prevRefs_1.has(ref)) {
|
|
(0, assignRef_1.assignRef)(ref, current_1);
|
|
}
|
|
});
|
|
}
|
|
currentValues.set(callbackRef, refs);
|
|
}, [refs]);
|
|
return callbackRef;
|
|
}
|
|
exports.useMergeRefs = useMergeRefs;
|