1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
//
// SettingsHeaderView.swift
// MullvadVPN
//
// Created by Jon Petersson on 2023-04-06.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import UIKit
class SettingsHeaderView: UITableViewHeaderFooterView {
typealias InfoButtonHandler = () -> Void
typealias CollapseHandler = (SettingsHeaderView) -> Void
let titleLabel: UILabel = {
let titleLabel = UILabel()
titleLabel.translatesAutoresizingMaskIntoConstraints = false
titleLabel.font = .mullvadSmallSemiBold
titleLabel.adjustsFontForContentSizeCategory = true
titleLabel.textColor = UIColor.Cell.titleTextColor
titleLabel.numberOfLines = 0
return titleLabel
}()
let infoButton: UIButton = {
let button = UIButton(type: .custom)
button.setAccessibilityIdentifier(.infoButton)
button.adjustsImageSizeForAccessibilityContentSizeCategory = true
button.tintColor = .white
button.setImage(UIImage.Buttons.info, for: .normal)
return button
}()
let collapseButton: UIButton = {
let button = UIButton(type: .custom)
button.adjustsImageSizeForAccessibilityContentSizeCategory = true
button.setAccessibilityIdentifier(.expandButton)
button.tintColor = .white
return button
}()
var isExpanded = false {
didSet {
updateCollapseImage()
updateAccessibilityCustomActions()
}
}
var accessibilityCustomActionName = "" {
didSet {
updateAccessibilityCustomActions()
}
}
var didCollapseHandler: CollapseHandler? {
didSet {
collapseButton.isHidden = didCollapseHandler == nil
}
}
var infoButtonHandler: InfoButtonHandler? {
didSet {
infoButton.isHidden = infoButtonHandler == nil
}
}
private let chevronDown = UIImage(named: "IconChevronDown")
private let chevronUp = UIImage(named: "IconChevronUp")
private let buttonWidth: CGFloat = 24
override init(reuseIdentifier: String?) {
super.init(reuseIdentifier: reuseIdentifier)
infoButton.isHidden = true
infoButton.addTarget(
self,
action: #selector(handleInfoButton(_:)),
for: .touchUpInside
)
collapseButton.isHidden = true
collapseButton.addTarget(
self,
action: #selector(handleCollapseButton(_:)),
for: .touchUpInside
)
contentView.directionalLayoutMargins = UIMetrics.SettingsCell.defaultLayoutMargins
contentView.backgroundColor = UIColor.Cell.Background.normal
let buttonAreaWidth =
UIMetrics.contentLayoutMargins.leading
+ UIMetrics
.contentLayoutMargins.trailing + buttonWidth
contentView.addConstrainedSubviews([titleLabel, infoButton, collapseButton]) {
titleLabel.pinEdgesToSuperview(.init([.top(contentView.layoutMargins.top), .leading(16)]))
titleLabel.bottomAnchor.constraint(
equalTo: contentView.bottomAnchor,
constant: -contentView.layoutMargins.bottom
).withPriority(.defaultHigh)
infoButton.pinEdgesToSuperview(.init([.top(0), .bottom(0)]))
titleLabel.trailingAnchor.constraint(
equalTo: infoButton.leadingAnchor,
constant: UIMetrics.TableView.infoButtonSpacing
)
infoButton.widthAnchor.constraint(equalToConstant: buttonAreaWidth)
collapseButton.pinEdgesToSuperview(.all().excluding(.leading))
collapseButton.leadingAnchor.constraint(greaterThanOrEqualTo: infoButton.trailingAnchor)
collapseButton.widthAnchor.constraint(equalToConstant: buttonAreaWidth)
}
updateCollapseImage()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
@objc private func handleInfoButton(_ sender: UIControl) {
infoButtonHandler?()
}
@objc private func handleCollapseButton(_ sender: UIControl) {
didCollapseHandler?(self)
}
@objc private func toggleCollapseAccessibilityAction() -> Bool {
didCollapseHandler?(self)
return true
}
private func updateCollapseImage() {
let image = isExpanded ? chevronUp : chevronDown
collapseButton.setImage(image, for: .normal)
collapseButton.setAccessibilityIdentifier(isExpanded ? .collapseButton : .expandButton)
}
private func updateAccessibilityCustomActions() {
let actionName =
isExpanded
? String(format: NSLocalizedString("Collapse %@", comment: ""), accessibilityCustomActionName)
: String(format: NSLocalizedString("Expand %@", comment: ""), accessibilityCustomActionName)
accessibilityCustomActions = [
UIAccessibilityCustomAction(
name: actionName,
target: self,
selector: #selector(toggleCollapseAccessibilityAction)
)
]
}
}
|
