import {extend} from '../../util/util';


export class NavController {

  constructor(nav) {
    this._nav = nav;
  }

  /**
   * Set the history stack to match the list of component items.
   */
  setItems(items) {
    return this._nav.setItems(items);
  }

  /**
   * Clear the history stack.
   */
  clear() {
    return this._nav.clear();
  }

  /**
   * Push an ew component onto the history stack.
   */
  push() {
    return this._nav.push.apply(this._nav, arguments);
  }

  /**
   * Pop the top most (visible) component off the history stack.
   */
  pop() {
    return this._nav.pop.apply(this._nav, arguments);
  }
}

export class NavParams {
  constructor(data) {
    this.data = data || {};
  }
  get(param) {
    return this.data[param];
  }
}