choerodon-ui/pro/lib/_util/PromiseQueue.js

An enterprise-class UI design language and React-based implementation

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));

var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var _tslib = require("tslib");

var _mobx = require("mobx");

var PromiseQueue =
/*#__PURE__*/
function () {
  function PromiseQueue() {
    var _this = this;

    (0, _classCallCheck2["default"])(this, PromiseQueue);
    this.queueing = false;
    (0, _mobx.runInAction)(function () {
      _this.queue = [];
    });
  }

  (0, _createClass2["default"])(PromiseQueue, [{
    key: "clear",
    value: function clear(promise) {
      if (!this.queueing) {
        var queue = this.queue;
        var index = queue.indexOf(promise);

        if (index !== -1) {
          queue.splice(index, 1);
        }
      }
    }
  }, {
    key: "add",
    value: function add(promise) {
      var _this2 = this;

      var queue = this.queue;
      queue.push(promise);
      return promise.then(function (value) {
        _this2.clear(promise);

        return value;
      })["catch"](function (error) {
        _this2.clear(promise);

        throw error;
      });
    }
  }, {
    key: "ready",
    value: function () {
      var _ready = (0, _asyncToGenerator2["default"])(
      /*#__PURE__*/
      _regenerator["default"].mark(function _callee() {
        var queue;
        return _regenerator["default"].wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                this.queueing = true;
                queue = this.queue;

                if (!queue.length) {
                  _context.next = 6;
                  break;
                }

                _context.next = 5;
                return queue.pop();

              case 5:
                return _context.abrupt("return", this.ready());

              case 6:
                this.queueing = false;
                return _context.abrupt("return", Promise.resolve());

              case 8:
              case "end":
                return _context.stop();
            }
          }
        }, _callee, this);
      }));

      function ready() {
        return _ready.apply(this, arguments);
      }

      return ready;
    }()
  }, {
    key: "length",
    get: function get() {
      return this.queue.length;
    }
  }]);
  return PromiseQueue;
}();

exports["default"] = PromiseQueue;
(0, _tslib.__decorate)([_mobx.observable], PromiseQueue.prototype, "queue", void 0);
(0, _tslib.__decorate)([_mobx.action], PromiseQueue.prototype, "clear", null);
(0, _tslib.__decorate)([_mobx.action], PromiseQueue.prototype, "add", null);
(0, _tslib.__decorate)([_mobx.action], PromiseQueue.prototype, "ready", null);
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