carbon-components/es/globals/js/mixins/handles.js

Carbon Components is a component library for IBM Cloud

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

export default function (ToMix) {
  /**
   * Mix-in class to manage handles in component.
   * Managed handles are automatically released when the component with this class mixed in is released.
   * @class Handles
   * @implements Handle
   */
  var Handles = function (_ToMix) {
    _inherits(Handles, _ToMix);

    function Handles() {
      var _ref;

      var _temp, _this, _ret;

      _classCallCheck(this, Handles);

      for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = Handles.__proto__ || Object.getPrototypeOf(Handles)).call.apply(_ref, [this].concat(args))), _this), _this.handles = new Set(), _temp), _possibleConstructorReturn(_this, _ret);
    }
    /**
     * The handled managed by this component.
     * Releasing this component releases the handles.
     * @type {Set<Handle>}
     */


    _createClass(Handles, [{
      key: "manage",


      /**
       * Manages the given handle.
       * @param {Handle} handle The handle to manage.
       * @returns {Handle} The given handle.
       */
      value: function manage(handle) {
        this.handles.add(handle);
        return handle;
      }

      /**
       * Stop managing the given handle.
       * @param {Handle} handle The handle to stop managing.
       * @returns {Handle} The given handle.
       */

    }, {
      key: "unmanage",
      value: function unmanage(handle) {
        this.handles.delete(handle);
        return handle;
      }
    }, {
      key: "release",
      value: function release() {
        var _this2 = this;

        this.handles.forEach(function (handle) {
          handle.release();
          _this2.handles.delete(handle);
        });
        return _get(Handles.prototype.__proto__ || Object.getPrototypeOf(Handles.prototype), "release", this).call(this);
      }
    }]);

    return Handles;
  }(ToMix);

  return Handles;
}