enbock / Time-Tracker

import {IObserverAdapter, IOnChangeCallback} from '../Observer/Observer';

export default class StorageAdapter<T> implements IObserverAdapter<T> {

  protected baseAdapter: IObserverAdapter<T>;

  protected onChangeCallback: IOnChangeCallback<T>;

  constructor(baseAdapter: IObserverAdapter<T>, onChangeCallback: IOnChangeCallback<T>) {

    this.baseAdapter = baseAdapter;

    this.onChangeCallback = onChangeCallback;

  }

  onChange(oldValue: T, newValue: T): void {

    this.onChangeCallback(oldValue, newValue);

    this.baseAdapter.onChange(oldValue, newValue);

  }

}