Implement message view controller

Author: vadymmarkov

BlurView.swift

@@ -0,0 +1,27 @@
+import UIKit
+
+final class BlurView: UIView {
+  private let effectView: UIVisualEffectView = .init(effect: UIBlurEffect(style: .extraLight))
+
+  // MARK: - Init
+
+  init(style: UIBlurEffectStyle) {
+    super.init(frame: .zero)
+    insertSubview(effectView, at: 0)
+  }
+
+  required init?(coder aDecoder: NSCoder) {
+    fatalError()
+  }
+
+  // MARK: - Subviews
+
+  override func addSubview(_ view: UIView) {
+    effectView.contentView.addSubview(view)
+  }
+
+  override func layoutSubviews() {
+    super.layoutSubviews()
+    effectView.frame = bounds
+  }
+}

Sources/Controllers/FooterViewController.swift

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+//
+//  FooterViewController.swift
+//  BarcodeScanner
+//
+//  Created by Vadym Markov on 22/01/2018.
+//
+
+import Foundation

Sources/Extensions/NSLayoutConstraint+Extensions.swift

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+//
+//  NSLayoutConstraint+Extensions.swift
+//  BarcodeScanner
+//
+//  Created by Vadym Markov on 22/01/2018.
+//
+
+import Foundation