//这个TableKitTextFieldCell对应的Model，只能用class，不要用struct；因为struct会在TableKitRow里产生一个无用的深copy
class TableKitTextFieldModel {
       
    var title: String? //左边的Label内容文字
    var value: String? //TextField的输入内容

    //以下是TextField的属性
    var secureTextEntry: Bool = false
    var placeHolder: String?
    var keyboardType: UIKeyboardType = UIKeyboardType.default
    var textAlignment: NSTextAlignment = NSTextAlignment.right
}

//触发cell内部控件的事件的key；用来区分是哪个内部事件
let TKTextFieldEditingChangedKey = "TKTextFieldEditingChangedKey"

//左label，右textField
class TableKitTextFieldCell: UITableViewCell, TableKitCellDataSource {
    
    //声明该cell对应的model数据类型；你可以不用写这句，选择直接把下文中的T换成Model；也能运行但是那样不规范
    typealias T = TableKitTextFieldModel
    
    //主model是在TableKitRow里强引用的，这里只是个副本
    private weak var weakModel: T!
    
    //当用户手动触发cell上的UI控件的各种事件
    //底层原理：把事件通过这个RowActionable回调给TableKitRow；然后TableKitRow收到回调后，再回调给vc的TableRowAction
    private var customRowAction: RowActionable?
    
    //cell上的控件
    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var textField: UITextField!
    
    //MARK: TableKitCellDataSource - 默认高度
    //这里的return的高度是第2优先级，如果在ViewController里设置本Cell高度属于第1优先级
    static var defaultHeight: CGFloat? {
        //返回0表示Cell高度为0，不写该方法表示Cell高度为automaticDimension
        return 54
    }
    
    //MARK: TableKitCellDataSource - 绑定model 和 临时存储customRowAction
    //这个回调方法是由系统的cellForRowAtIndexPath触发的，所以要写的内容就跟cellForRowAtIndexPath一样
    func configureData(with tkModel: T ,customRowAction : RowActionable) {
        
        self.weakModel = tkModel
        self.customRowAction = customRowAction
        
        titleLabel.text = tkModel.title
        textField.text = tkModel.value
        textField.placeholder = tkModel.placeHolder
        textField.isSecureTextEntry = tkModel.secureTextEntry
        textField.textAlignment = tkModel.textAlignment
        textField.keyboardType = tkModel.keyboardType
        
        textField.addTarget(self, action: #selector(editingChanged(_:)), for: .editingChanged)
    }
    
    //cell内部控件触发的事件，通过本cell的全局变量customRowAction传给TableKitRow，TableKitRow会再传回给vc
    @objc fileprivate func editingChanged(_ textField:UITextField) {
        // 控件输入监听，监听cell上的UI控件的output值的改变，然后把新值设置回weakModel
        weakModel.value = textField.text;
        customRowAction?.onCustomerAction(customActionKey: TKTextFieldEditingChangedKey, cell: self, path: nil, userInfo: nil)
    }

}

    //管理全部的Cell
    open var tableKitSections = [TableKitSection]()

    //输入账号的Cell
    private var nameTableKitRow: TableKitRow<TableKitTextFieldCell>!

    override func viewDidLoad() {
        let nameTkModel = TableKitTextFieldModel()
        nameTkModel.title = "账号"
        nameTkModel.placeHolder = "请输入账号"
        
        //Cell点击事件
        let cellClickAction = TableRowAction<TableKitTextFieldCell>(.click) { (options :TableRowActionCallback<TableKitTextFieldCell>) in
            options.cell?.textField.becomeFirstResponder()
        }
        
        //cell里的TextField的文本编辑事件
        let textFieldEditAction = TableRowAction<TableKitTextFieldCell>(.custom(TKTextFieldEditingChangedKey)) { (options :TableRowActionCallback<TableKitTextFieldCell>) in
            //options.dataModel 就是 nameTkModel
            print("vc收到账号输入框变化1 = ",options.dataModel.value!)
        }
        
        let section = TableKitSection(headerTitle: "TextFieldCell的HeaderTitle", footerTitle: nil)
        self.nameTableKitRow = TableKitRow<TableKitTextFieldCell>(item: nameTkModel, actions: [cellClickAction, textFieldEditAction])
        section.append(row: self.nameTableKitRow)
        self.tableKitSections.append(section)
    }