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Pods/SwiftEntryKit/Source/MessageViews/EKMessageContentView.swift

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+//
+//  EKMessageContentView.swift
+//  SwiftEntryKit
+//
+//  Created by Daniel Huri on 4/19/18.
+//  Copyright (c) 2018 huri000@gmail.com. All rights reserved.
+//
+
+import UIKit
+
+public class EKMessageContentView: UIView {
+    
+    // MARK: Properties
+    
+    private let titleLabel = UILabel()
+    private let subtitleLabel = UILabel()
+    
+    private var horizontalConstraints: QLAxisConstraints!
+    private var topConstraint: NSLayoutConstraint!
+    private var bottomConstraint: NSLayoutConstraint!
+    private var labelsOffsetConstraint: NSLayoutConstraint!
+        
+    public var titleContent: EKProperty.LabelContent! {
+        didSet {
+            titleLabel.content = titleContent
+        }
+    }
+    
+    public var subtitleContent: EKProperty.LabelContent! {
+        didSet {
+            subtitleLabel.content = subtitleContent
+        }
+    }
+    
+    public var titleAttributes: EKProperty.LabelStyle! {
+        didSet {
+            titleLabel.style = titleAttributes
+        }
+    }
+    
+    public var subtitleAttributes: EKProperty.LabelStyle! {
+        didSet {
+            subtitleLabel.style = subtitleAttributes
+        }
+    }
+    
+    public var title: String! {
+        didSet {
+            titleLabel.text = title
+        }
+    }
+    
+    public var subtitle: String! {
+        didSet {
+            subtitleLabel.text = subtitle
+        }
+    }
+    
+    public var verticalMargins: CGFloat = 20 {
+        didSet {
+            topConstraint.constant = verticalMargins
+            bottomConstraint.constant = -verticalMargins
+            layoutIfNeeded()
+        }
+    }
+    
+    public var horizontalMargins: CGFloat = 20 {
+        didSet {
+            horizontalConstraints.first.constant = horizontalMargins
+            horizontalConstraints.second.constant = -horizontalMargins
+            layoutIfNeeded()
+        }
+    }
+    
+    public var labelsOffset: CGFloat = 8 {
+        didSet {
+            labelsOffsetConstraint.constant = labelsOffset
+            layoutIfNeeded()
+        }
+    }
+    
+    // MARK: Setup
+    
+    public init() {
+        super.init(frame: UIScreen.main.bounds)
+        clipsToBounds = true
+        setupTitleLabel()
+        setupSubtitleLabel()
+    }
+    
+    public required init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    private func setupTitleLabel() {
+        addSubview(titleLabel)
+        topConstraint = titleLabel.layoutToSuperview(.top, offset: verticalMargins)
+        horizontalConstraints = titleLabel.layoutToSuperview(axis: .horizontally, offset: horizontalMargins)
+        titleLabel.forceContentWrap(.vertically)
+    }
+    
+    private func setupSubtitleLabel() {
+        addSubview(subtitleLabel)
+        labelsOffsetConstraint = subtitleLabel.layout(.top, to: .bottom, of: titleLabel, offset: labelsOffset)
+        subtitleLabel.layout(to: .left, of: titleLabel)
+        subtitleLabel.layout(to: .right, of: titleLabel)
+        bottomConstraint = subtitleLabel.layoutToSuperview(.bottom, offset: -verticalMargins, priority: .must)
+        subtitleLabel.forceContentWrap(.vertically)
+    }
+    
+    private func setupInterfaceStyle() {
+        titleLabel.textColor = titleContent?.style.color(for: traitCollection)
+        subtitleLabel.textColor = subtitleContent?.style.color(for: traitCollection)
+    }
+    
+    public override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
+        setupInterfaceStyle()
+    }
+}