91 lines
3.9 KiB
JavaScript
91 lines
3.9 KiB
JavaScript
"use strict";
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exports.__esModule = true;
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exports.default = useResponderEvents;
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var React = _interopRequireWildcard(require("react"));
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var ResponderSystem = _interopRequireWildcard(require("./ResponderSystem"));
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function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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/**
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* Copyright (c) Nicolas Gallagher
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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*/
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/**
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* Hook for integrating the Responder System into React
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*
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* function SomeComponent({ onStartShouldSetResponder }) {
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* const ref = useRef(null);
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* useResponderEvents(ref, { onStartShouldSetResponder });
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* return <div ref={ref} />
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* }
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*/
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var emptyObject = {};
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var idCounter = 0;
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function useStable(getInitialValue) {
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var ref = React.useRef(null);
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if (ref.current == null) {
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ref.current = getInitialValue();
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}
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return ref.current;
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}
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function useResponderEvents(hostRef, config) {
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if (config === void 0) {
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config = emptyObject;
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}
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var id = useStable(function () {
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return idCounter++;
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});
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var isAttachedRef = React.useRef(false); // This is a separate effects so it doesn't run when the config changes.
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// On initial mount, attach global listeners if needed.
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// On unmount, remove node potentially attached to the Responder System.
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React.useEffect(function () {
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ResponderSystem.attachListeners();
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return function () {
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ResponderSystem.removeNode(id);
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};
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}, [id]); // Register and unregister with the Responder System as necessary
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React.useEffect(function () {
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var _config = config,
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onMoveShouldSetResponder = _config.onMoveShouldSetResponder,
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onMoveShouldSetResponderCapture = _config.onMoveShouldSetResponderCapture,
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onScrollShouldSetResponder = _config.onScrollShouldSetResponder,
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onScrollShouldSetResponderCapture = _config.onScrollShouldSetResponderCapture,
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onSelectionChangeShouldSetResponder = _config.onSelectionChangeShouldSetResponder,
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onSelectionChangeShouldSetResponderCapture = _config.onSelectionChangeShouldSetResponderCapture,
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onStartShouldSetResponder = _config.onStartShouldSetResponder,
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onStartShouldSetResponderCapture = _config.onStartShouldSetResponderCapture;
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var requiresResponderSystem = onMoveShouldSetResponder != null || onMoveShouldSetResponderCapture != null || onScrollShouldSetResponder != null || onScrollShouldSetResponderCapture != null || onSelectionChangeShouldSetResponder != null || onSelectionChangeShouldSetResponderCapture != null || onStartShouldSetResponder != null || onStartShouldSetResponderCapture != null;
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var node = hostRef.current;
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if (requiresResponderSystem) {
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ResponderSystem.addNode(id, node, config);
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isAttachedRef.current = true;
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} else if (isAttachedRef.current) {
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ResponderSystem.removeNode(id);
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isAttachedRef.current = false;
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}
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}, [config, hostRef, id]);
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React.useDebugValue({
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isResponder: hostRef.current === ResponderSystem.getResponderNode()
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});
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React.useDebugValue(config);
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}
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module.exports = exports.default; |