Refactoring

submodules/TelegramUI/Components/Calls/CallScreen/Sources/OverlayMaskContainerView.swift

@@ -0,0 +1,68 @@
+import Foundation
+import UIKit
+
+public protocol OverlayMaskContainerViewProtocol: UIView {
+    var maskContents: UIView { get }
+}
+
+public class OverlayMaskContainerView: UIView, OverlayMaskContainerViewProtocol {
+    override public static var layerClass: AnyClass {
+        return MirroringLayer.self
+    }
+    
+    public let maskContents: UIView
+    
+    override init(frame: CGRect) {
+        self.maskContents = UIView()
+        
+        super.init(frame: frame)
+        
+        (self.layer as? MirroringLayer)?.targetLayer = self.maskContents.layer
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    override public func addSubview(_ view: UIView) {
+        super.addSubview(view)
+        
+        if let view = view as? OverlayMaskContainerViewProtocol {
+            self.maskContents.addSubview(view.maskContents)
+        }
+    }
+    
+    override public func insertSubview(_ view: UIView, at index: Int) {
+        super.insertSubview(view, at: index)
+        
+        if let view = view as? OverlayMaskContainerViewProtocol {
+            self.maskContents.addSubview(view.maskContents)
+        }
+    }
+    
+    override public func insertSubview(_ view: UIView, aboveSubview siblingSubview: UIView) {
+        super.insertSubview(view, aboveSubview: siblingSubview)
+        
+        if let view = view as? OverlayMaskContainerViewProtocol {
+            self.maskContents.addSubview(view.maskContents)
+        }
+    }
+    
+    override public func insertSubview(_ view: UIView, belowSubview siblingSubview: UIView) {
+        super.insertSubview(view, belowSubview: siblingSubview)
+        
+        if let view = view as? OverlayMaskContainerViewProtocol {
+            self.maskContents.addSubview(view.maskContents)
+        }
+    }
+    
+    override public func willRemoveSubview(_ subview: UIView) {
+        super.willRemoveSubview(subview)
+        
+        if let view = subview as? OverlayMaskContainerViewProtocol {
+            if view.maskContents.superview === self {
+                view.maskContents.removeFromSuperview()
+            }
+        }
+    }
+}