Refactor PeerInfoUI and related modules

submodules/SinglePhoneInputNode/Sources/SinglePhoneInputNode.swift

@@ -0,0 +1,169 @@
+import Foundation
+import UIKit
+import AsyncDisplayKit
+import Display
+import TelegramCore
+
+private func removeDuplicatedPlus(_ text: String?) -> String {
+    var result = ""
+    if let text = text {
+        for c in text {
+            if c == "+" {
+                if result.isEmpty {
+                    result += String(c)
+                }
+            } else {
+                result += String(c)
+            }
+        }
+    }
+    return result
+}
+
+private func removePlus(_ text: String?) -> String {
+    var result = ""
+    if let text = text {
+        for c in text {
+            if c != "+" {
+                result += String(c)
+            }
+        }
+    }
+    return result
+}
+
+private func cleanPhoneNumber(_ text: String?) -> String {
+    var cleanNumber = ""
+    if let text = text {
+        for c in text {
+            if c == "+" {
+                if cleanNumber.isEmpty {
+                    cleanNumber += String(c)
+                }
+            } else if c >= "0" && c <= "9" {
+                cleanNumber += String(c)
+            }
+        }
+    }
+    return cleanNumber
+}
+
+private func cleanPrefix(_ text: String) -> String {
+    var result = ""
+    var checked = false
+    for c in text {
+        if c != " " {
+            checked = true
+        }
+        if checked {
+            result += String(c)
+        }
+    }
+    return result
+}
+
+private func cleanSuffix(_ text: String) -> String {
+    var result = ""
+    var checked = false
+    for c in text.reversed() {
+        if c != " " {
+            checked = true
+        }
+        if checked {
+            result = String(c) + result
+        }
+    }
+    return result
+}
+
+public final class SinglePhoneInputNode: ASDisplayNode, UITextFieldDelegate {
+    private let fontSize: CGFloat
+    
+    public var numberField: TextFieldNode?
+    public var numberFieldText: String?
+    
+    public var enableEditing: Bool = true
+    
+    public var number: String {
+        get {
+            return cleanPhoneNumber(self.numberField?.textField.text ?? "")
+        } set(value) {
+            self.updateNumber(value)
+        }
+    }
+    public var numberUpdated: ((String) -> Void)?
+    public var beginEditing: (() -> Void)?
+    public var endEditing: (() -> Void)?
+    
+    private let phoneFormatter = InteractivePhoneFormatter()
+    
+    private var validLayout: CGSize?
+    
+    public init(fontSize: CGFloat = 20.0) {
+        self.fontSize = fontSize
+        
+        super.init()
+    }
+    
+    override public func didLoad() {
+        super.didLoad()
+        
+        let numberField = TextFieldNode()
+        numberField.textField.font = Font.regular(self.fontSize)
+        numberField.textField.keyboardType = .phonePad
+        numberField.textField.text = self.numberFieldText
+        
+        self.addSubnode(numberField)
+        
+        numberField.textField.addTarget(self, action: #selector(self.numberTextChanged(_:)), for: .editingChanged)
+        numberField.textField.delegate = self
+        
+        self.numberField = numberField
+        
+        if let size = self.validLayout {
+            numberField.frame = CGRect(origin: CGPoint(), size: size)
+        }
+    }
+    
+    @objc private func numberTextChanged(_ textField: UITextField) {
+        self.updateNumberFromTextFields()
+    }
+    
+    public func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
+        return self.enableEditing
+    }
+    
+    public func textFieldDidBeginEditing(_ textField: UITextField) {
+        self.beginEditing?()
+    }
+    
+    public func textFieldDidEndEditing(_ textField: UITextField) {
+        self.endEditing?()
+    }
+    
+    private func updateNumberFromTextFields() {
+        guard let numberField = self.numberField else {
+            return
+        }
+        let inputText = removeDuplicatedPlus(cleanPhoneNumber(cleanPhoneNumber(numberField.textField.text)))
+        self.updateNumber(inputText)
+        self.numberUpdated?(inputText)
+    }
+    
+    private func updateNumber(_ inputText: String) {
+        let (_, numberText) = self.phoneFormatter.updateText(inputText)
+        guard let numberField = self.numberField else {
+            self.numberFieldText = numberText
+            return
+        }
+        
+        if numberText != numberField.textField.text {
+            numberField.textField.text = numberText
+        }
+    }
+    
+    public func updateLayout(size: CGSize) {
+        self.validLayout = size
+        self.numberField?.frame = CGRect(origin: CGPoint(), size: size)
+    }
+}