来吧，当我们用Vue的api完成swift响应式的编写到底会是什么样子的的呢？
话不多说上代码示例：
放一起有点长一段一段放，顺便说一下（代码好简单）
var reText = Response()
var reIf = Response()
var reBlind = Response()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
self.view.backgroundColor = UIColor.white
let label = RLabel()
label.backgroundColor = UIColor.blue
label.textColor = UIColor.red
label.frame = CGRect.init(x: 50, y: 80, width: 80, height: 30)
self.view.addSubview(label)
let label1 = RLabel()
label1.backgroundColor = UIColor.blue
label1.textColor = UIColor.red
label1.frame = CGRect.init(x: 200, y: 80, width: 80, height: 30)
self.view.addSubview(label1)
let label3 = RLabel()
label3.backgroundColor = UIColor.blue
label3.textColor = UIColor.red
label3.frame = CGRect.init(x: 200, y: 180, width: 80, height: 30)
self.view.addSubview(label3)
let label4 = RLabel()
label4.backgroundColor = UIColor.blue
label4.textColor = UIColor.red
label4.frame = CGRect.init(x: 50, y: 180, width: 80, height: 30)
self.view.addSubview(label4)
let button = RButton()
button.setTitle("button", for: .normal)
button.setTitleColor(UIColor.black, for: .normal)
self.view.addSubview(button)
button.frame = CGRect.init(x: 50, y: 280, width: 80, height: 30)
let field = RField()
field.borderStyle = .roundedRect
self.view.addSubview(field)
field.frame = CGRect.init(x: 50, y: 380, width: 80, height: 30)
label.v_text(re: reText)
label1.v_if(re: reIf)
label1.v_text(re: reText)
label3.v_bind(re: reBlind)
label3.v_text(re: reText)
label4.v_text(re: reText)
button.v_on {
self.reText.v_text = "wyy_click"
self.reIf.v_if = true
self.reBlind.v_blind = ["backgroundColor":UIColor.green]
}
field.v_model {
self.reText.v_text = field.text
}
}
声明Response 实例reText，reIf，reBlind
v_on是点击事件，v_model 是field 的input变化
点击改变状态，监听field的输入文本变化，数据双向绑定（需要自己写一下，待会会优化）
class RLabel:UILabel{
//{{ msg }}
func v_text(re:Response){
re.responseContent({[weak self] in
self?.text = re.v_text
})
}
//v-bind
func v_bind(re:Response){
re.responseContent({[weak self] in
if let dic = re.v_blind{
self?.setValuesForKeys(dic)
}
})
}
//v-if
func v_if(re:Response){
re.responseContent({[weak self] in
if let v = re.v_if{
self?.isHidden = v
}
})
}
}
class RButton:UIButton{
//{{ msg }}
func v_text(re:Response){
re.responseContent({[weak self] in
self?.setTitle(re.v_text, for: .normal)
})
}
//v-bind
func v_bind(re:Response){
re.responseContent({[weak self] in
if let dic = re.v_blind{
self?.setValuesForKeys(dic)
}
})
}
//v-if
func v_if(re:Response){
re.responseContent({[weak self] in
if let v = re.v_if{
self?.isHidden = v
}
})
}
//v-on
var block:responseBlock?
func v_on(re:@escaping responseBlock){
self.addTarget(self, action: #selector(clickEvent), for: .touchUpInside)
block = re
}
@objc func clickEvent(){
block?()
}
}
class RField:UITextField{
//{{ msg }}
func v_text(re:Response){
re.responseContent({[weak self] in
self?.text = re.v_text
})
}
//v-bind
func v_bind(re:Response){
re.responseContent({[weak self] in
if let dic = re.v_blind{
self?.setValuesForKeys(dic)
}
})
}
//v-if
func v_if(re:Response){
re.responseContent({[weak self] in
if let v = re.v_if{
self?.isHidden = v
}
})
}
//v-model
var block:responseBlock?
func v_model(re:@escaping responseBlock){
block = re
self.addTarget(self, action: #selector(changeText), for: .editingChanged)
}
@objc func changeText(){
block?()
}
}
RLabel，RButton，RField 二次封装原生UI,实现接口v_text,v_blind,v_if,v_on,v_model
typealias responseBlock = () -> ()
class Response:NSObject{
//响应者队列
var array = Array<responseBlock>()
private var _v_text:String?
var v_text:String?{
set{
_v_text = newValue
sendReponserMsg()
}
get{
return _v_text
}
}
private var _v_blind:[String:Any]?
var v_blind:[String:Any]?{
set{
_v_blind = newValue
sendReponserMsg()
}
get{
return _v_blind
}
}
private var _v_if:Bool?
var v_if:Bool?{
set{
_v_if = newValue
sendReponserMsg()
}
get{
return _v_if
}
}
func responseContent(_ callBack:@escaping responseBlock){
array.append(callBack)
}
//触发响应
func sendReponserMsg(){
for value in array{
value()
}
}
}
Response 实现响应类，声明属性 v_text,v_blind,v_if,v_on,v_model
写的很顺利，一气呵成。思路明了就不会有太大问题。
写的不多，可以写写demo用了。还有array，model之类的需要完善。
希望对大家有帮助，使用原生封装，不涉及底层也就不会有性能，或者其他问题。而且大家也可以自定自己喜欢的API,你也可以写出自己风格的轻量级框架了。
写到一个文件里面不太好看，让我们完善一下，让他成为一个真正可以为大家服务的框架吧。
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