  function ScheduledDisposable(scheduler, disposable) {
    this.scheduler = scheduler;
    this.disposable = disposable;
    this.isDisposed = false;
  }

  function scheduleItem(s, self) {
    if (!self.isDisposed) {
      self.isDisposed = true;
      self.disposable.dispose();
    }
  }

  ScheduledDisposable.prototype.dispose = function () {
    this.scheduler.scheduleWithState(this, scheduleItem);
  };
