platform-ios/RainbowPlanet/RainbowPlanet/Modules/PublishModule/PublishEdit/View/PublishEditTitleCell.swift

//
//  PublishEditTitleCell.swift
//  RainbowPlanet
//
//  Created by Christopher on 2019/6/17.
//  Copyright © 2019 RainbowPlanet. All rights reserved.
//

import UIKit
import RxSwift

class PublishEditTitleCell: UITableViewCell {
    
    let disposeBag = DisposeBag()
    
    typealias TopicTextClosure = (_ text: String) -> Void
    var topicTextClosure : TopicTextClosure?
    
    var titleStr: String? {
        didSet {
            editTextField.text = self.titleStr
        }
    }
    
    class func cellWith(tableView:UITableView,indexPath:IndexPath) -> PublishEditTitleCell {
        let ID = "PublishEditTitleCell"
        tableView.register(PublishEditTitleCell.self, forCellReuseIdentifier: ID)
        let cell : PublishEditTitleCell = tableView.dequeueReusableCell(withIdentifier: ID, for: indexPath) as! PublishEditTitleCell
        cell.indexPath = indexPath
        return cell
    }
    
    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupViews()
        setupLayouts()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    var indexPath: IndexPath? {
        didSet {
            
        }
    }
    
    //MRAK: - 设置View
    private func setupViews() {
        self.selectionStyle = .none
        addSubview(editTextField)
        addSubview(h_lineLabel)
    }
    
    private func setupLayouts() {
        editTextField.snp.makeConstraints { (make) in
            make.top.equalToSuperview()
            make.bottom.equalToSuperview().offset(-1)
            make.left.equalTo(14)
            make.right.equalTo(-14)
        }
        h_lineLabel.snp.makeConstraints { (make) in
            make.left.equalTo(editTextField.snp.left)
            make.right.equalTo(editTextField.snp.right)
            make.top.equalTo(editTextField.snp.top)
            make.height.equalTo(0.5)
        }
    }
    
    private lazy var editTextField: UITextField = {
        let editTextField = UITextField()
        editTextField.textColor = k333333Color
        editTextField.font = kRegularFont14
        editTextField.tintColor = kEnabledButtonColor
        editTextField.clearButtonMode = .whileEditing
        editTextField.attributedPlaceholder = NSAttributedString.init(string:"标题好，能收获更多U米哦（标题最多20字）", attributes: [NSAttributedString.Key.font:kRegularFont14 as Any, NSAttributedString.Key.foregroundColor:kDDDDDDColor])
        editTextField.delegate = self
        return editTextField
    }()
    
    private lazy var h_lineLabel: UILabel = {
        let h_lineLabel = UILabel()
        h_lineLabel.backgroundColor = kf5f5f5Color
        return h_lineLabel
    }()
    
}

extension PublishEditTitleCell: UITextFieldDelegate {
    
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        if textField == editTextField {
            textField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: UIControl.Event.editingChanged)
        }
        return true
    }
    
    @objc func textFieldDidChange(_ textField: UITextField) {
        var fullStr = textField.text ?? ""
        if textField.text?.count ?? 0 > 40 {
            fullStr = String(fullStr.prefix(20)) as String
            textField.text = fullStr
        }
        
        if let topicTextClosure = self.topicTextClosure {
            topicTextClosure(self.editTextField.text ?? "")
        }
    }
    
}