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52 lines
2.4 KiB
52 lines
2.4 KiB
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }
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function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }
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function _iterableToArrayLimit(arr, i) { if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === "[object Arguments]")) { return; } var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
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function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
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import { useRef, useMemo } from 'react';
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import { invariant } from '@react-dnd/invariant';
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import { useMonitorOutput } from './internal/useMonitorOutput';
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import { useIsomorphicLayoutEffect } from './internal/useIsomorphicLayoutEffect';
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import { useDragSourceMonitor, useDragHandler } from './internal/drag';
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/**
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* useDragSource hook
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* @param sourceSpec The drag source specification *
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*/
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export function useDrag(spec) {
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var specRef = useRef(spec);
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specRef.current = spec; // TODO: wire options into createSourceConnector
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invariant(spec.item != null, 'item must be defined');
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invariant(spec.item.type != null, 'item type must be defined');
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var _useDragSourceMonitor = useDragSourceMonitor(),
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_useDragSourceMonitor2 = _slicedToArray(_useDragSourceMonitor, 2),
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monitor = _useDragSourceMonitor2[0],
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connector = _useDragSourceMonitor2[1];
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useDragHandler(specRef, monitor, connector);
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var result = useMonitorOutput(monitor, specRef.current.collect || function () {
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return {};
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}, function () {
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return connector.reconnect();
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});
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var connectDragSource = useMemo(function () {
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return connector.hooks.dragSource();
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}, [connector]);
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var connectDragPreview = useMemo(function () {
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return connector.hooks.dragPreview();
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}, [connector]);
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useIsomorphicLayoutEffect(function () {
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connector.dragSourceOptions = specRef.current.options || null;
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connector.reconnect();
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}, [connector]);
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useIsomorphicLayoutEffect(function () {
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connector.dragPreviewOptions = specRef.current.previewOptions || null;
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connector.reconnect();
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}, [connector]);
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return [result, connectDragSource, connectDragPreview];
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} |