qtsd-fork/example/node_modules/react-dnd/lib/createSourceConnector.js

Do not use this please

'use strict';

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

var _wrapConnectorHooks = require('./wrapConnectorHooks');

var _wrapConnectorHooks2 = _interopRequireDefault(_wrapConnectorHooks);

var _areOptionsEqual = require('./areOptionsEqual');

var _areOptionsEqual2 = _interopRequireDefault(_areOptionsEqual);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function createSourceConnector(backend) {
	var currentHandlerId = void 0;

	var currentDragSourceNode = void 0;
	var currentDragSourceOptions = void 0;
	var disconnectCurrentDragSource = void 0;

	var currentDragPreviewNode = void 0;
	var currentDragPreviewOptions = void 0;
	var disconnectCurrentDragPreview = void 0;

	function reconnectDragSource() {
		if (disconnectCurrentDragSource) {
			disconnectCurrentDragSource();
			disconnectCurrentDragSource = null;
		}

		if (currentHandlerId && currentDragSourceNode) {
			disconnectCurrentDragSource = backend.connectDragSource(currentHandlerId, currentDragSourceNode, currentDragSourceOptions);
		}
	}

	function reconnectDragPreview() {
		if (disconnectCurrentDragPreview) {
			disconnectCurrentDragPreview();
			disconnectCurrentDragPreview = null;
		}

		if (currentHandlerId && currentDragPreviewNode) {
			disconnectCurrentDragPreview = backend.connectDragPreview(currentHandlerId, currentDragPreviewNode, currentDragPreviewOptions);
		}
	}

	function receiveHandlerId(handlerId) {
		if (handlerId === currentHandlerId) {
			return;
		}

		currentHandlerId = handlerId;
		reconnectDragSource();
		reconnectDragPreview();
	}

	var hooks = (0, _wrapConnectorHooks2.default)({
		dragSource: function connectDragSource(node, options) {
			if (node === currentDragSourceNode && (0, _areOptionsEqual2.default)(options, currentDragSourceOptions)) {
				return;
			}

			currentDragSourceNode = node;
			currentDragSourceOptions = options;

			reconnectDragSource();
		},

		dragPreview: function connectDragPreview(node, options) {
			if (node === currentDragPreviewNode && (0, _areOptionsEqual2.default)(options, currentDragPreviewOptions)) {
				return;
			}

			currentDragPreviewNode = node;
			currentDragPreviewOptions = options;

			reconnectDragPreview();
		}
	});

	return {
		receiveHandlerId: receiveHandlerId,
		hooks: hooks
	};
}