协议声明与实现

protocol SHViewModelProtocol:UITableViewDataSource,UITableViewDelegate {
    associatedtype ItemType
    var dataArray:[ItemType] {set get}
}
protocol SHCellProtocol {
    associatedtype ItemType
    var model:ItemType? {set get}
    mutating func updateData(dataArray:[ItemType],index:IndexPath);
}
extension SHCellProtocol{
    mutating func updateData(dataArray:[ItemType],index:IndexPath) {
        print("执行了====")
        if dataArray.count > index.row {
            self.model = dataArray[index.row]
        }
    }
}

class SHBaseTableCell<Element>: UITableViewCell,SHCellProtocol {
    
    
    typealias ItemType = Element
    var model:Element?

}

class SHBaseTableViewModel<Element>: NSObject,SHViewModelProtocol {
    var dataArray: [Element] = [Element]()
    var listView:UITableView?
    typealias ItemType = Element
    var registNibCells:[SHBaseTableCell<Element>.Type] = [SHBaseTableCell<Element>.Type]()
    func bindViewModel(listView:UITableView,registNibCells:[SHBaseTableCell<Element>.Type]) {
        self.listView = listView
        self.registNibCells = registNibCells
        for item in registNibCells {
            let nib = UINib.init(nibName: "\(item.self)", bundle: nil)
            listView.register(nib, forCellReuseIdentifier: "\(item.self)")
        }
        
        listView.dataSource = self
        listView.delegate = self
        
    }
    
    func updateData(list:[Element]) {
        self.dataArray = list
        
        self.listView?.reloadData()
    }
    
    
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        
        return self.dataArray.count
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
        let cellType = self.registNibCells.first!
        let cell = tableView.dequeueReusableCell(withIdentifier: "\(cellType)", for: indexPath)
        if var item = cell as? SHBaseTableCell<Element> {
            item.updateData(dataArray: self.dataArray, index: indexPath)
            
        }
        
        return cell
    }
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        
        
        
    }
}



``