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| 1 | +// |
| 2 | +// Copyright 2024 Square Inc. |
| 3 | +// |
| 4 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +// you may not use this file except in compliance with the License. |
| 6 | +// You may obtain a copy of the License at |
| 7 | +// |
| 8 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +// |
| 10 | +// Unless required by applicable law or agreed to in writing, software |
| 11 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +// See the License for the specific language governing permissions and |
| 14 | +// limitations under the License. |
| 15 | +// |
| 16 | + |
| 17 | +import Paralayout |
| 18 | +import UIKit |
| 19 | + |
| 20 | +final class NavBarBackButtonAccessibilityTraitsViewController: AccessibilityViewController { |
| 21 | + |
| 22 | + // MARK: - Public Properties |
| 23 | + |
| 24 | + init(titles: [String?] = [nil, nil]) { |
| 25 | + self.titles = titles |
| 26 | + super.init(nibName: nil, bundle: nil) |
| 27 | + } |
| 28 | + |
| 29 | + required init?(coder: NSCoder) { |
| 30 | + fatalError("init(coder:) has not been implemented") |
| 31 | + } |
| 32 | + |
| 33 | + var titles: [String?] |
| 34 | + |
| 35 | + // MARK: - Private Properties |
| 36 | + |
| 37 | + private var rootView: View { |
| 38 | + return view as! View |
| 39 | + } |
| 40 | + |
| 41 | + // MARK: - UIViewController |
| 42 | + |
| 43 | + override func loadView() { |
| 44 | + view = View(titles: titles) |
| 45 | + } |
| 46 | +} |
| 47 | + |
| 48 | +// MARK: - |
| 49 | + |
| 50 | +extension NavBarBackButtonAccessibilityTraitsViewController { |
| 51 | + |
| 52 | + final class Child: UIViewController { |
| 53 | + |
| 54 | + init(_ title: String? = nil) { |
| 55 | + super.init(nibName: nil, bundle: nil) |
| 56 | + self.title = title |
| 57 | + } |
| 58 | + |
| 59 | + required init?(coder: NSCoder) { |
| 60 | + super.init(coder: coder) |
| 61 | + } |
| 62 | + let label = UILabel() |
| 63 | + |
| 64 | + override func viewDidLoad() { |
| 65 | + super.viewDidLoad() |
| 66 | + navigationItem.hidesBackButton = false |
| 67 | + |
| 68 | + label.text = "Back Button Accessibility Traits - " |
| 69 | + label.text?.append(hasTitle ? "With Titles" : "Without Titles" ) |
| 70 | + view.addSubview(label) |
| 71 | + } |
| 72 | + private var hasTitle: Bool { |
| 73 | + self.title != nil |
| 74 | + } |
| 75 | + |
| 76 | + override func viewDidLayoutSubviews() { |
| 77 | + super.viewDidLayoutSubviews() |
| 78 | + label.sizeToFit() |
| 79 | + let x = (view.bounds.width / 2) - (label.frame.size.width / 2) |
| 80 | + let y = (view.bounds.height / 2) - (label.frame.size.height / 2) |
| 81 | + label.frame = CGRect(origin: CGPoint(x: x, y: y), size: label.frame.size) |
| 82 | + } |
| 83 | + } |
| 84 | +} |
| 85 | + |
| 86 | +extension NavBarBackButtonAccessibilityTraitsViewController { |
| 87 | + |
| 88 | + final class View: UIView { |
| 89 | + |
| 90 | + // MARK: - Life Cycle |
| 91 | + |
| 92 | + init(titles: [String?]) { |
| 93 | + self.titles = titles |
| 94 | + super.init(frame: .zero) |
| 95 | + addSubview(navView) |
| 96 | + navController.viewControllers = titles.map { Child($0) } |
| 97 | + } |
| 98 | + |
| 99 | + @available(*, unavailable) |
| 100 | + required init?(coder: NSCoder) { |
| 101 | + fatalError("init(coder:) has not been implemented") |
| 102 | + } |
| 103 | + |
| 104 | + // MARK: - Public Properties |
| 105 | + var titles: [String?] |
| 106 | + |
| 107 | + let navController = UINavigationController() |
| 108 | + var navView: UIView { |
| 109 | + navController.view |
| 110 | + } |
| 111 | + |
| 112 | + |
| 113 | + |
| 114 | + // MARK: - Private Properties |
| 115 | + |
| 116 | + // MARK: - UIView |
| 117 | + |
| 118 | + override func layoutSubviews() { |
| 119 | + super.layoutSubviews() |
| 120 | + navView.frame = bounds |
| 121 | + } |
| 122 | + |
| 123 | + |
| 124 | + } |
| 125 | + |
| 126 | +} |
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