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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
//
// SelectLocationCell.swift
// MullvadVPN
//
// Created by pronebird on 02/05/2019.
// Copyright © 2019 Mullvad VPN AB. All rights reserved.
//
import UIKit
private let kCollapseButtonWidth: CGFloat = 24
class SelectLocationCell: BasicTableViewCell {
typealias CollapseHandler = (SelectLocationCell) -> Void
let locationLabel = UILabel()
let statusIndicator = RelayStatusIndicatorView()
let tickImageView = UIImageView(image: UIImage(named: "IconTick"))
let collapseButton = UIButton(type: .custom)
private let chevronDown = UIImage(named: "IconChevronDown")
private let chevronUp = UIImage(named: "IconChevronUp")
var isDisabled = false {
didSet {
updateDisabled()
updateBackgroundColor()
}
}
var isExpanded = false {
didSet {
updateCollapseImage()
}
}
var showsCollapseControl = false {
didSet {
collapseButton.isHidden = !showsCollapseControl
}
}
var didCollapseHandler: CollapseHandler?
private let preferredMargins = UIEdgeInsets(top: 16, left: 28, bottom: 16, right: 12)
override var indentationLevel: Int {
didSet {
updateBackgroundColor()
}
}
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
setupCell()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func layoutSubviews() {
super.layoutSubviews()
let indentPoints = CGFloat(indentationLevel) * indentationWidth
contentView.frame = CGRect(
x: indentPoints,
y: contentView.frame.origin.y,
width: contentView.frame.size.width - indentPoints,
height: contentView.frame.size.height
)
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
updateTickImage()
}
private func setupCell() {
indentationWidth = 16
backgroundColor = .clear
contentView.layoutMargins = preferredMargins
locationLabel.font = UIFont.systemFont(ofSize: 17)
locationLabel.textColor = .white
statusIndicator.tintColor = .white
tickImageView.tintColor = .white
collapseButton.accessibilityIdentifier = "CollapseButton"
collapseButton.tintColor = .white
collapseButton.setImage(chevronDown, for: .normal)
collapseButton.addTarget(self, action: #selector(handleCollapseButton(_ :)), for: .touchUpInside)
[locationLabel, tickImageView, statusIndicator, collapseButton].forEach { (subview) in
subview.translatesAutoresizingMaskIntoConstraints = false
contentView.addSubview(subview)
}
updateCollapseImage()
updateDisabled()
updateBackgroundColor()
NSLayoutConstraint.activate([
tickImageView.leadingAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leadingAnchor),
tickImageView.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
statusIndicator.widthAnchor.constraint(equalToConstant: 16),
statusIndicator.heightAnchor.constraint(equalToConstant: 16),
statusIndicator.centerXAnchor.constraint(equalTo: tickImageView.centerXAnchor),
statusIndicator.centerYAnchor.constraint(equalTo: tickImageView.centerYAnchor),
locationLabel.leadingAnchor.constraint(equalTo: statusIndicator.trailingAnchor, constant: 12),
locationLabel.trailingAnchor.constraint(greaterThanOrEqualTo: collapseButton.leadingAnchor, constant: 0),
locationLabel.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor),
locationLabel.bottomAnchor.constraint(equalTo: contentView.layoutMarginsGuide.bottomAnchor),
collapseButton.widthAnchor.constraint(equalToConstant: UIMetrics.contentLayoutMargins.left + UIMetrics.contentLayoutMargins.right + kCollapseButtonWidth),
collapseButton.topAnchor.constraint(equalTo: contentView.topAnchor),
collapseButton.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
collapseButton.bottomAnchor.constraint(equalTo: contentView.bottomAnchor)
])
}
private func updateTickImage() {
statusIndicator.isHidden = isSelected
tickImageView.isHidden = !isSelected
}
private func updateDisabled() {
locationLabel.alpha = isDisabled ? 0.2 : 1
collapseButton.alpha = isDisabled ? 0.2 : 1
}
private func updateBackgroundColor() {
backgroundView?.backgroundColor = backgroundColorForIdentationLevel()
selectedBackgroundView?.backgroundColor = selectedBackgroundColorForIndentationLevel()
}
private func backgroundColorForIdentationLevel() -> UIColor {
switch indentationLevel {
case 1:
return UIColor.SubCell.backgroundColor
case 2:
return UIColor.SubSubCell.backgroundColor
default:
return UIColor.Cell.backgroundColor
}
}
private func selectedBackgroundColorForIndentationLevel() -> UIColor {
if isDisabled {
return UIColor.Cell.disabledSelectedBackgroundColor
} else {
return UIColor.Cell.selectedBackgroundColor
}
}
@objc private func handleCollapseButton(_ sender: UIControl) {
didCollapseHandler?(self)
}
private func updateCollapseImage() {
let image = isExpanded ? chevronUp : chevronDown
collapseButton.setImage(image, for: .normal)
}
}
|
