waveform-playlist-nartj/lib/Undoer.js

Multiple track web audio editor and player with waveform preview

"use strict";

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

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

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

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

var Undoer = /*#__PURE__*/function () {
  function Undoer() {
    (0, _classCallCheck2["default"])(this, Undoer);
    this.events = [];
  }

  (0, _createClass2["default"])(Undoer, [{
    key: "push",
    value: function push(event) {
      this.events.push(event);
    }
  }, {
    key: "pop",
    value: function pop() {
      if (this.events.length > 0) {
        this.events.pop()();
      }
    }
  }, {
    key: "clear",
    value: function clear() {
      this.events.clear();
    }
  }]);
  return Undoer;
}();

exports["default"] = Undoer;