overleaf/services/web/public/coffee/editor/sharejs/client/microevent.js

// Generated by CoffeeScript 1.4.0
(function() {
  var MicroEvent, nextTick,
    __slice = [].slice;

  nextTick = typeof WEB !== "undefined" && WEB !== null ? function(fn) {
    return setTimeout(fn, 0);
  } : process['nextTick'];

  MicroEvent = (function() {

    function MicroEvent() {}

    MicroEvent.prototype.on = function(event, fct) {
      var _base;
      this._events || (this._events = {});
      (_base = this._events)[event] || (_base[event] = []);
      this._events[event].push(fct);
      return this;
    };

    MicroEvent.prototype.removeListener = function(event, fct) {
      var i, listeners, _base,
        _this = this;
      this._events || (this._events = {});
      listeners = ((_base = this._events)[event] || (_base[event] = []));
      i = 0;
      while (i < listeners.length) {
        if (listeners[i] === fct) {
          listeners[i] = void 0;
        }
        i++;
      }
      nextTick(function() {
        var x;
        return _this._events[event] = (function() {
          var _i, _len, _ref, _results;
          _ref = this._events[event];
          _results = [];
          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
            x = _ref[_i];
            if (x) {
              _results.push(x);
            }
          }
          return _results;
        }).call(_this);
      });
      return this;
    };

    MicroEvent.prototype.emit = function() {
      var args, event, fn, _i, _len, _ref, _ref1;
      event = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
      if (!((_ref = this._events) != null ? _ref[event] : void 0)) {
        return this;
      }
      _ref1 = this._events[event];
      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
        fn = _ref1[_i];
        if (fn) {
          fn.apply(this, args);
        }
      }
      return this;
    };

    return MicroEvent;

  })();

  MicroEvent.mixin = function(obj) {
    var proto;
    proto = obj.prototype || obj;
    proto.on = MicroEvent.prototype.on;
    proto.removeListener = MicroEvent.prototype.removeListener;
    proto.emit = MicroEvent.prototype.emit;
    return obj;
  };

  if (typeof WEB === "undefined" || WEB === null) {
    module.exports = MicroEvent;
  }

}).call(this);