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Pods/SwiftEntryKit/Source/MessageViews/MessagesUtils/EKRatingSymbolView.swift

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+//
+//  EKRatingSymbolView.swift
+//  SwiftEntryKit
+//
+//  Created by Daniel Huri on 6/1/18.
+//  Copyright (c) 2018 huri000@gmail.com. All rights reserved.
+//
+
+import UIKit
+
+final public class EKRatingSymbolView: UIView {
+    
+    private let button = UIButton()
+    private let imageView = UIImageView()
+    
+    private let unselectedImage: EKProperty.ImageContent
+    private let selectedImage: EKProperty.ImageContent
+    
+    var selection: EKRatingMessage.Selection
+    
+    public var isSelected: Bool {
+        set {
+            imageView.imageContent = newValue ? selectedImage : unselectedImage
+        }
+        get {
+            return imageView.image == selectedImage.images.first
+        }
+    }
+    
+    public init(unselectedImage: EKProperty.ImageContent, selectedImage: EKProperty.ImageContent, selection: @escaping EKRatingMessage.Selection) {
+        self.unselectedImage = unselectedImage
+        self.selectedImage = selectedImage
+        self.selection = selection
+        super.init(frame: .zero)
+        setupImageView()
+        setupButton()
+    }
+    
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    private func setupButton() {
+        addSubview(button)
+        button.fillSuperview()
+        button.addTarget(self, action: #selector(touchUpInside), for: .touchUpInside)
+        button.addTarget(self, action: #selector(touchDown), for: [.touchDown])
+        button.addTarget(self, action: #selector(touchUp), for: [.touchUpInside, .touchUpOutside, .touchCancel])
+    }
+    
+    private func setupImageView() {
+        addSubview(imageView)
+        imageView.imageContent = unselectedImage
+        imageView.centerInSuperview()
+        imageView.sizeToSuperview(withRatio: 0.7)
+    }
+    
+    @objc func touchUpInside() {
+        selection(tag)
+    }
+    
+    @objc func touchDown() {
+        transform = CGAffineTransform(scaleX: 1.15, y: 1.15)
+    }
+    
+    @objc func touchUp() {
+        transform = CGAffineTransform(scaleX: 1, y: 1)
+    }
+}