//
//  BaseNavigationController.swift
//  MTP2_iOS
//
//  Created by zhongyuan on 2018/5/9.
//  Copyright © 2018年 zhongyuan.All rights reserved.
//

import UIKit

class BaseNavigationController: UINavigationController {
    
    var rightButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
//        /// 设置返回手势
//        setupBackGestureRecognizer()
    }
    
    // MARK: - 返回手势相关
    func setupBackGestureRecognizer() {
        let target = self.interactivePopGestureRecognizer?.delegate
        let pan = UIPanGestureRecognizer(target: target, action: Selector(("handleNavigationTransition:")))
        pan.delegate = self
        self.view.addGestureRecognizer(pan)
        self.interactivePopGestureRecognizer?.isEnabled = false
    }

    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        if self.viewControllers.count >= 1 {
            viewController.hidesBottomBarWhenPushed = true
            viewController.navigationItem.leftBarButtonItem = UIBarButtonItem(image: UIImage(named: "back"), style: .done, target: self, action: #selector(backToParent))
        }
        super.pushViewController(viewController, animated: animated)
    }
    
    @objc func backToParent() {
        self.popViewController(animated: true)
    }
}

extension BaseNavigationController: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        return self.children.count > 1
    }
}