@react-aria/utils/dist/useObjectRef.main.js

Spectrum UI components in React

var $eMoU1$react = require("react");


function $parcel$export(e, n, v, s) {
  Object.defineProperty(e, n, {get: v, set: s, enumerable: true, configurable: true});
}

$parcel$export(module.exports, "useObjectRef", () => $475b35fe72ba49b3$export$4338b53315abf666);
/*
 * Copyright 2021 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */ 
function $475b35fe72ba49b3$export$4338b53315abf666(ref) {
    const objRef = (0, $eMoU1$react.useRef)(null);
    const cleanupRef = (0, $eMoU1$react.useRef)(undefined);
    const refEffect = (0, $eMoU1$react.useCallback)((instance)=>{
        if (typeof ref === 'function') {
            const refCallback = ref;
            const refCleanup = refCallback(instance);
            return ()=>{
                if (typeof refCleanup === 'function') refCleanup();
                else refCallback(null);
            };
        } else if (ref) {
            ref.current = instance;
            return ()=>{
                ref.current = null;
            };
        }
    }, [
        ref
    ]);
    return (0, $eMoU1$react.useMemo)(()=>({
            get current () {
                return objRef.current;
            },
            set current (value){
                objRef.current = value;
                if (cleanupRef.current) {
                    cleanupRef.current();
                    cleanupRef.current = undefined;
                }
                if (value != null) cleanupRef.current = refEffect(value);
            }
        }), [
        refEffect
    ]);
}


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