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Current File : /home/emeraadmin/public_html/node_modules/react-dnd/dist/cjs/hooks/internal/drag.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.useDragSourceMonitor = useDragSourceMonitor;
exports.useDragHandler = useDragHandler;

var _react = require("react");

var _invariant = require("@react-dnd/invariant");

var _registration = require("../../common/registration");

var _useDragDropManager = require("../useDragDropManager");

var _DragSourceMonitorImpl = require("../../common/DragSourceMonitorImpl");

var _SourceConnector = require("../../common/SourceConnector");

var _useIsomorphicLayoutEffect = require("./useIsomorphicLayoutEffect");

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) 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; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function useDragSourceMonitor() {
  var manager = (0, _useDragDropManager.useDragDropManager)();
  var monitor = (0, _react.useMemo)(function () {
    return new _DragSourceMonitorImpl.DragSourceMonitorImpl(manager);
  }, [manager]);
  var connector = (0, _react.useMemo)(function () {
    return new _SourceConnector.SourceConnector(manager.getBackend());
  }, [manager]);
  return [monitor, connector];
}

function useDragHandler(spec, monitor, connector) {
  var manager = (0, _useDragDropManager.useDragDropManager)();
  var handler = (0, _react.useMemo)(function () {
    return {
      beginDrag: function beginDrag() {
        var _spec$current = spec.current,
            begin = _spec$current.begin,
            item = _spec$current.item;

        if (begin) {
          var beginResult = begin(monitor);
          (0, _invariant.invariant)(beginResult == null || _typeof(beginResult) === 'object', 'dragSpec.begin() must either return an object, undefined, or null');
          return beginResult || item || {};
        }

        return item || {};
      },
      canDrag: function canDrag() {
        if (typeof spec.current.canDrag === 'boolean') {
          return spec.current.canDrag;
        } else if (typeof spec.current.canDrag === 'function') {
          return spec.current.canDrag(monitor);
        } else {
          return true;
        }
      },
      isDragging: function isDragging(globalMonitor, target) {
        var isDragging = spec.current.isDragging;
        return isDragging ? isDragging(monitor) : target === globalMonitor.getSourceId();
      },
      endDrag: function endDrag() {
        var end = spec.current.end;

        if (end) {
          end(monitor.getItem(), monitor);
        }

        connector.reconnect();
      }
    };
  }, []);
  (0, _useIsomorphicLayoutEffect.useIsomorphicLayoutEffect)(function registerHandler() {
    var _registerSource = (0, _registration.registerSource)(spec.current.item.type, handler, manager),
        _registerSource2 = _slicedToArray(_registerSource, 2),
        handlerId = _registerSource2[0],
        unregister = _registerSource2[1];

    monitor.receiveHandlerId(handlerId);
    connector.receiveHandlerId(handlerId);
    return unregister;
  }, []);
}