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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
class KeyValueCell: UITableViewCell {
let keyLabel: UILabel = {
let keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
keyLabel.textColor = .black
keyLabel.textAlignment = .left
return keyLabel
}()
let valueLabelScrollView: UIScrollView = {
let scrollView = UIScrollView(frame: .zero)
scrollView.isDirectionalLockEnabled = true
scrollView.showsHorizontalScrollIndicator = false
scrollView.showsVerticalScrollIndicator = false
return scrollView
}()
let valueTextField: UITextField = {
let valueTextField = UITextField()
valueTextField.textAlignment = .right
valueTextField.isEnabled = false
valueTextField.font = UIFont.preferredFont(forTextStyle: .body)
valueTextField.adjustsFontForContentSizeCategory = true
valueTextField.autocapitalizationType = .none
valueTextField.autocorrectionType = .no
valueTextField.spellCheckingType = .no
valueTextField.textColor = .gray
return valueTextField
}()
var copyableGesture = true
var key: String {
get { return keyLabel.text ?? "" }
set(value) { keyLabel.text = value }
}
var value: String {
get { return valueTextField.text ?? "" }
set(value) { valueTextField.text = value }
}
var placeholderText: String {
get { return valueTextField.placeholder ?? "" }
set(value) { valueTextField.placeholder = value }
}
var keyboardType: UIKeyboardType {
get { return valueTextField.keyboardType }
set(value) { valueTextField.keyboardType = value }
}
var isValueValid = true {
didSet {
if isValueValid {
keyLabel.textColor = .black
} else {
keyLabel.textColor = .red
}
}
}
var isStackedHorizontally = false
var isStackedVertically = false
var contentSizeBasedConstraints = [NSLayoutConstraint]()
var onValueChanged: ((String) -> Void)?
var onValueBeingEdited: ((String) -> Void)?
private var textFieldValueOnBeginEditing: String = ""
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
])
valueTextField.delegate = self
valueLabelScrollView.addSubview(valueTextField)
valueTextField.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueTextField.leftAnchor.constraint(equalTo: valueLabelScrollView.contentLayoutGuide.leftAnchor),
valueTextField.topAnchor.constraint(equalTo: valueLabelScrollView.contentLayoutGuide.topAnchor),
valueTextField.bottomAnchor.constraint(equalTo: valueLabelScrollView.contentLayoutGuide.bottomAnchor),
valueTextField.rightAnchor.constraint(equalTo: valueLabelScrollView.contentLayoutGuide.rightAnchor),
valueTextField.heightAnchor.constraint(equalTo: valueLabelScrollView.heightAnchor)
])
let expandToFitValueLabelConstraint = NSLayoutConstraint(item: valueTextField, attribute: .width, relatedBy: .equal, toItem: valueLabelScrollView, attribute: .width, multiplier: 1, constant: 0)
expandToFitValueLabelConstraint.priority = .defaultLow + 1
expandToFitValueLabelConstraint.isActive = true
contentView.addSubview(valueLabelScrollView)
contentView.addSubview(valueLabelScrollView)
valueLabelScrollView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueLabelScrollView.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: valueLabelScrollView.bottomAnchor, multiplier: 0.5)
])
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 1, for: .horizontal)
keyLabel.setContentHuggingPriority(.defaultHigh, for: .horizontal)
valueLabelScrollView.setContentHuggingPriority(.defaultLow, for: .horizontal)
let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture(_:)))
addGestureRecognizer(gestureRecognizer)
isUserInteractionEnabled = true
configureForContentSize()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func configureForContentSize() {
var constraints = [NSLayoutConstraint]()
if traitCollection.preferredContentSizeCategory.isAccessibilityCategory {
// Stack vertically
if !isStackedVertically {
constraints = [
valueLabelScrollView.topAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueLabelScrollView.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
]
isStackedVertically = true
isStackedHorizontally = false
}
} else {
// Stack horizontally
if !isStackedHorizontally {
constraints = [
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueLabelScrollView.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueLabelScrollView.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
]
isStackedHorizontally = true
isStackedVertically = false
}
}
if !constraints.isEmpty {
NSLayoutConstraint.deactivate(contentSizeBasedConstraints)
NSLayoutConstraint.activate(constraints)
contentSizeBasedConstraints = constraints
}
}
@objc func handleTapGesture(_ recognizer: UIGestureRecognizer) {
if !copyableGesture {
return
}
guard recognizer.state == .recognized else { return }
if let recognizerView = recognizer.view,
let recognizerSuperView = recognizerView.superview, recognizerView.becomeFirstResponder() {
let menuController = UIMenuController.shared
menuController.setTargetRect(detailTextLabel?.frame ?? recognizerView.frame, in: detailTextLabel?.superview ?? recognizerSuperView)
menuController.setMenuVisible(true, animated: true)
}
}
override var canBecomeFirstResponder: Bool {
return true
}
override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
return (action == #selector(UIResponderStandardEditActions.copy(_:)))
}
override func copy(_ sender: Any?) {
UIPasteboard.general.string = valueTextField.text
}
override func prepareForReuse() {
super.prepareForReuse()
copyableGesture = true
placeholderText = ""
isValueValid = true
keyboardType = .default
onValueChanged = nil
onValueBeingEdited = nil
key = ""
value = ""
configureForContentSize()
}
}
extension KeyValueCell: UITextFieldDelegate {
func textFieldDidBeginEditing(_ textField: UITextField) {
textFieldValueOnBeginEditing = textField.text ?? ""
isValueValid = true
}
func textFieldDidEndEditing(_ textField: UITextField) {
let isModified = textField.text ?? "" != textFieldValueOnBeginEditing
guard isModified else { return }
onValueChanged?(textField.text ?? "")
}
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
if let onValueBeingEdited = onValueBeingEdited {
let modifiedText = ((textField.text ?? "") as NSString).replacingCharacters(in: range, with: string)
onValueBeingEdited(modifiedText)
}
return true
}
}
|
