@shockpkg/core/lib/dispatcher.js

shockpkg core

"use strict";

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

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

var _initializerDefineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/initializerDefineProperty"));

var _applyDecoratedDescriptor2 = _interopRequireDefault(require("@babel/runtime/helpers/applyDecoratedDescriptor"));

var _initializerWarningHelper2 = _interopRequireDefault(require("@babel/runtime/helpers/initializerWarningHelper"));

var _decorators = require("./decorators");

var _dec, _dec2, _class, _descriptor, _descriptor2, _temp;

/**
 * Event dispatcher.
 *
 * @param context Context object.
 */
let Dispatcher = (_dec = (0, _decorators.property)(false), _dec2 = (0, _decorators.property)(false), (_class = (_temp = class Dispatcher extends Object {
  /**
   * Event context.
   */

  /**
   * Event handlers.
   */
  constructor(context) {
    super();
    (0, _initializerDefineProperty2.default)(this, "_context", _descriptor, this);
    (0, _initializerDefineProperty2.default)(this, "_handlers", _descriptor2, this);
    this._context = context;
  }
  /**
   * Add listener.
   *
   * @param handler Event handler.
   */


  on(handler) {
    this._handlers.add(handler);
  }
  /**
   * Remove listener.
   *
   * @param handler Event handler.
   */


  off(handler) {
    this._handlers.delete(handler);
  }
  /**
   * Trigger, sync.
   *
   * @param event Event data.
   * @returns Handler count.
   */


  triggerSync(event) {
    const self = this._context;
    let i = 0;

    for (const cb of this._handlers) {
      cb.call(self, event);
      i++;
    }

    return i;
  }
  /**
   * Trigger, async.
   *
   * @param event Event data.
   * @returns Handler count.
   */


  async triggerAsync(event) {
    const self = this._context;
    let i = 0;

    for (const cb of this._handlers) {
      // eslint-disable-next-line no-await-in-loop
      await cb.call(self, event);
      i++;
    }

    return i;
  }
  /**
   * Trigger or throw, sync.
   *
   * @param event Event data.
   */


  triggerOrThrowSync(event) {
    // eslint-disable-next-line no-sync
    if (!this.triggerSync(event)) {
      throw event;
    }
  }
  /**
   * Trigger or throw, sync.
   *
   * @param event Event data.
   * @returns Handler count.
   */


  async triggerOrThrowAsync(event) {
    if (!(await this.triggerAsync(event))) {
      throw event;
    }
  }

}, _temp), (_descriptor = (0, _applyDecoratedDescriptor2.default)(_class.prototype, "_context", [_dec], {
  configurable: true,
  enumerable: true,
  writable: true,
  initializer: null
}), _descriptor2 = (0, _applyDecoratedDescriptor2.default)(_class.prototype, "_handlers", [_dec2], {
  configurable: true,
  enumerable: true,
  writable: true,
  initializer: function () {
    return new Set();
  }
})), _class));
exports.Dispatcher = Dispatcher;
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