@civet/events/lib/useEventHandler.js

Civet

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
var _core = require("@civet/core");
var _fastDeepEqual = _interopRequireDefault(require("fast-deep-equal"));
var _react = require("react");
var _context = require("./context");
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _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(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
/**
 * Enables automatic updating for a Resource component or useResource hook by subscribing to an EventReceiver.
 *
 * Necessary configuration that is not directly specified is taken from the ConfigContext and ResourceContext.
 *
 * onEvent can be used to directly access events allowing you to add custom event logic to your components.
 */
function useEventHandler(_ref) {
  var eventReceiverProp = _ref.eventReceiver,
    resourceProp = _ref.resource,
    disabled = _ref.disabled,
    optionsProp = _ref.options,
    onEvent = _ref.onEvent,
    onNotify = _ref.onNotify;
  var configContext = (0, _context.useConfigContext)();
  var eventReceiver = eventReceiverProp || configContext.eventReceiver;
  var resourceContext = (0, _core.useResourceContext)();
  var currentResource = resourceProp || resourceContext;
  var _useState = (0, _react.useState)(currentResource),
    _useState2 = _slicedToArray(_useState, 2),
    resource = _useState2[0],
    setResource = _useState2[1];
  if ((currentResource === null || currentResource === void 0 ? void 0 : currentResource.request) !== (resource === null || resource === void 0 ? void 0 : resource.request)) {
    setResource(currentResource);
  }
  var _useState3 = (0, _react.useState)(optionsProp),
    _useState4 = _slicedToArray(_useState3, 2),
    options = _useState4[0],
    setOptions = _useState4[1];
  if (!(0, _fastDeepEqual["default"])(options, optionsProp)) {
    setOptions(optionsProp);
  }
  var isDisabled = Boolean(disabled || (currentResource === null || currentResource === void 0 ? void 0 : currentResource.isEmpty));
  (0, _react.useEffect)(function () {
    if (eventReceiver == null || isDisabled) return undefined;
    var unsubscribe = eventReceiver.subscribe(resource, options, function (data) {
      if (((data === null || data === void 0 ? void 0 : data.length) || 0) === 0) return;
      var unhandledEvents;
      if (typeof onEvent === 'function') {
        unhandledEvents = data.filter(function (event) {
          return !onEvent(event);
        });
      } else {
        unhandledEvents = data;
      }
      if (unhandledEvents.length === 0 || typeof (resource === null || resource === void 0 ? void 0 : resource.notify) !== 'function') {
        return;
      }
      var promise = resource.notify();
      if (typeof onNotify === 'function') {
        promise.then(function (result) {
          return onNotify(result, unhandledEvents);
        });
      }
    });
    return unsubscribe;
  }, [eventReceiver, isDisabled, resource, options, onEvent, onNotify]);
}
var _default = exports["default"] = useEventHandler;