@barchart/common-js/dist/cjs/commands/MappedCommandHandler.js

Library of common JavaScript utilities

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
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};
var __copyProps = (to, from, except, desc) => {
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  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var MappedCommandHandler_exports = {};
__export(MappedCommandHandler_exports, {
  default: () => MappedCommandHandler
});
module.exports = __toCommonJS(MappedCommandHandler_exports);
var assert = __toESM(require("./../lang/assert.js"));
var import_CommandHandler = __toESM(require("./CommandHandler.js"));
class MappedCommandHandler extends import_CommandHandler.default {
  #handlerMap;
  #defaultHandler;
  #nameExtractor;
  /**
   * @public
   * @param {*} nameExtractor
   */
  constructor(nameExtractor) {
    super();
    assert.argumentIsRequired(nameExtractor, "nameFunction", Function);
    this.#handlerMap = {};
    this.#defaultHandler = null;
    this.#nameExtractor = nameExtractor;
  }
  /**
   * @public
   * @param {*} name
   * @param {*} commandHandler
   * @returns {MappedCommandHandler}
   */
  addCommandHandler(name, commandHandler) {
    assert.argumentIsRequired(name, "name", String);
    assert.argumentIsRequired(commandHandler, "commandHandler", import_CommandHandler.default, "CommandHandler");
    if (Object.prototype.hasOwnProperty.call(this.#handlerMap, name)) {
      throw new Error("A handler with the same name already exists in the map");
    }
    if (commandHandler === this) {
      throw new Error("Recursive use of mapped command handlers is prohibited");
    }
    this.#handlerMap[name] = commandHandler;
    return this;
  }
  /**
   * @public
   * @param {*} commandHandler
   * @returns {MappedCommandHandler}
   */
  setDefaultCommandHandler(commandHandler) {
    assert.argumentIsRequired(commandHandler, "commandHandler", import_CommandHandler.default, "CommandHandler");
    this.#defaultHandler = commandHandler;
    return this;
  }
  /**
   * @protected
   * @override
   * @param {*} data
   * @returns {*}
   */
  _process(data) {
    const handlerName = this.#nameExtractor(data);
    const handler = this.#handlerMap[handlerName] || this.#defaultHandler;
    let returnRef;
    if (handler) {
      returnRef = handler.process(data);
    } else {
      returnRef = null;
    }
    return returnRef;
  }
  /**
   * Returns a string representation.
   *
   * @public
   * @returns {string}
   */
  toString() {
    return "[MappedCommandHandler]";
  }
}

{
	const cjsExports = module.exports;
	const cjsDefaultExport = cjsExports && cjsExports.__esModule ? cjsExports.default : cjsExports;

	if (cjsDefaultExport && (typeof cjsDefaultExport === 'function' || typeof cjsDefaultExport === 'object')) {
		Object.keys(cjsExports).forEach((key) => {
			if (key !== 'default' && key !== '__esModule') {
				cjsDefaultExport[key] = cjsExports[key];
			}
		});
	}

	module.exports = cjsDefaultExport;
}