Setup classes and protocols

Author: IsaAliev

CodeInputView.xcodeproj/project.pbxproj

@@ -12,6 +12,7 @@
 		CE901F1E205AF28000C688DD /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = CE901F1C205AF28000C688DD /* Main.storyboard */; };
 		CE901F20205AF28000C688DD /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = CE901F1F205AF28000C688DD /* Assets.xcassets */; };
 		CE901F23205AF28000C688DD /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = CE901F21205AF28000C688DD /* LaunchScreen.storyboard */; };
+		CE901F2B205AF32600C688DD /* CodeInputView.swift in Sources */ = {isa = PBXBuildFile; fileRef = CE901F2A205AF32600C688DD /* CodeInputView.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -22,6 +23,7 @@
 		CE901F1F205AF28000C688DD /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		CE901F22205AF28000C688DD /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		CE901F24205AF28000C688DD /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+		CE901F2A205AF32600C688DD /* CodeInputView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CodeInputView.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -60,6 +62,7 @@
 				CE901F1F205AF28000C688DD /* Assets.xcassets */,
 				CE901F21205AF28000C688DD /* LaunchScreen.storyboard */,
 				CE901F24205AF28000C688DD /* Info.plist */,
+				CE901F2A205AF32600C688DD /* CodeInputView.swift */,
 			);
 			path = CodeInputView;
 			sourceTree = "<group>";
@@ -136,6 +139,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				CE901F2B205AF32600C688DD /* CodeInputView.swift in Sources */,
 				CE901F1B205AF28000C688DD /* ViewController.swift in Sources */,
 				CE901F19205AF28000C688DD /* AppDelegate.swift in Sources */,
 			);

CodeInputView/CodeInputView.swift

@@ -0,0 +1,91 @@
+//
+//  CodeInputView.swift
+//  CodeInputView
+//
+//  Created by Isa Aliev on 15.03.18.
+//  Copyright © 2018 IA. All rights reserved.
+//
+
+import Foundation
+import UIKit
+
+protocol InputableField {
+    func deleteValue()
+    func setValue(_ newValue: String)
+    func getValue() -> String
+    func isEmpty() -> Bool
+}
+
+class CodeInputField: UIView, InputableField {
+    private var value: String?
+    
+    func deleteValue() {
+        value = ""
+    }
+    
+    func setValue(_ newValue: String) {
+        value = newValue
+    }
+    
+    func getValue() -> String {
+        return value ?? ""
+    }
+    
+    func isEmpty() -> Bool {
+        return value == nil
+    }
+}
+
+class CodeInputView<T: InputableField&UIView>: UIView {
+    var fields = [T]()
+    var numberOfFields = 4
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+        
+        configure()
+    }
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        
+        configure()
+    }
+    
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+        
+        configure()
+    }
+    
+    override func layoutSubviews() {
+        super.layoutSubviews()
+        
+        layoutFields()
+    }
+    
+    private func configure() {
+        guard fields.count != numberOfFields else { return }
+        
+        for _ in 0..<numberOfFields {
+            fields.append(T(frame: .zero))
+        }
+    }
+    
+    private func layoutFields() {
+        
+    }
+    
+    var hasText: Bool {
+        return false
+    }
+    
+    func insertText(_ text: String) {
+        
+    }
+    
+    func deleteBackward() {
+        
+    }
+}
+