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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
|
// SPDX-License-Identifier: MIT
// Copyright © 2018 WireGuard LLC. All Rights Reserved.
import UIKit
protocol TunnelEditTableViewControllerDelegate: class {
func tunnelSaved(tunnel: TunnelContainer)
func tunnelEditingCancelled()
}
// MARK: TunnelEditTableViewController
class TunnelEditTableViewController: UITableViewController {
weak var delegate: TunnelEditTableViewControllerDelegate?
let interfaceFieldsBySection: [[TunnelViewModel.InterfaceField]] = [
[.name],
[.privateKey, .publicKey, .generateKeyPair],
[.addresses, .listenPort, .mtu, .dns]
]
let peerFields: [TunnelViewModel.PeerField] = [
.publicKey, .preSharedKey, .endpoint,
.allowedIPs, .excludePrivateIPs, .persistentKeepAlive,
.deletePeer
]
let activateOnDemandOptions: [ActivateOnDemandOption] = [
.useOnDemandOverWiFiOrCellular,
.useOnDemandOverWiFiOnly,
.useOnDemandOverCellularOnly
]
let tunnelsManager: TunnelsManager
let tunnel: TunnelContainer?
let tunnelViewModel: TunnelViewModel
var activateOnDemandSetting: ActivateOnDemandSetting
private var interfaceSectionCount: Int { return interfaceFieldsBySection.count }
private var peerSectionCount: Int { return tunnelViewModel.peersData.count }
init(tunnelsManager: TunnelsManager, tunnel: TunnelContainer) {
// Use this initializer to edit an existing tunnel.
self.tunnelsManager = tunnelsManager
self.tunnel = tunnel
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnel.tunnelConfiguration())
activateOnDemandSetting = tunnel.activateOnDemandSetting()
super.init(style: .grouped)
}
init(tunnelsManager: TunnelsManager, tunnelConfiguration: TunnelConfiguration?) {
// Use this initializer to create a new tunnel.
// If tunnelConfiguration is passed, data will be prepopulated from that configuration.
self.tunnelsManager = tunnelsManager
tunnel = nil
tunnelViewModel = TunnelViewModel(tunnelConfiguration: tunnelConfiguration)
activateOnDemandSetting = ActivateOnDemandSetting.defaultSetting
super.init(style: .grouped)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
self.title = tunnel == nil ? "New configuration" : "Edit configuration"
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .save, target: self, action: #selector(saveTapped))
self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .cancel, target: self, action: #selector(cancelTapped))
self.tableView.estimatedRowHeight = 44
self.tableView.rowHeight = UITableView.automaticDimension
self.tableView.register(TunnelEditTableViewKeyValueCell.self, forCellReuseIdentifier: TunnelEditTableViewKeyValueCell.reuseIdentifier)
self.tableView.register(TunnelEditTableViewReadOnlyKeyValueCell.self, forCellReuseIdentifier: TunnelEditTableViewReadOnlyKeyValueCell.reuseIdentifier)
self.tableView.register(TunnelEditTableViewButtonCell.self, forCellReuseIdentifier: TunnelEditTableViewButtonCell.reuseIdentifier)
self.tableView.register(TunnelEditTableViewSwitchCell.self, forCellReuseIdentifier: TunnelEditTableViewSwitchCell.reuseIdentifier)
self.tableView.register(TunnelEditTableViewSelectionListCell.self, forCellReuseIdentifier: TunnelEditTableViewSelectionListCell.reuseIdentifier)
}
@objc func saveTapped() {
self.tableView.endEditing(false)
let tunnelSaveResult = tunnelViewModel.save()
switch tunnelSaveResult {
case .error(let errorMessage):
let erroringConfiguration = (tunnelViewModel.interfaceData.validatedConfiguration == nil) ? "Interface" : "Peer"
ErrorPresenter.showErrorAlert(title: "Invalid \(erroringConfiguration)", message: errorMessage, from: self)
self.tableView.reloadData() // Highlight erroring fields
case .saved(let tunnelConfiguration):
if let tunnel = tunnel {
// We're modifying an existing tunnel
tunnelsManager.modify(tunnel: tunnel,
tunnelConfiguration: tunnelConfiguration,
activateOnDemandSetting: activateOnDemandSetting) { [weak self] (error) in
if let error = error {
ErrorPresenter.showErrorAlert(error: error, from: self)
} else {
self?.dismiss(animated: true, completion: nil)
self?.delegate?.tunnelSaved(tunnel: tunnel)
}
}
} else {
// We're adding a new tunnel
tunnelsManager.add(tunnelConfiguration: tunnelConfiguration,
activateOnDemandSetting: activateOnDemandSetting) { [weak self] result in
if let error = result.error {
ErrorPresenter.showErrorAlert(error: error, from: self)
} else {
let tunnel: TunnelContainer = result.value!
self?.dismiss(animated: true, completion: nil)
self?.delegate?.tunnelSaved(tunnel: tunnel)
}
}
}
}
}
@objc func cancelTapped() {
dismiss(animated: true, completion: nil)
self.delegate?.tunnelEditingCancelled()
}
}
// MARK: UITableViewDataSource
extension TunnelEditTableViewController {
override func numberOfSections(in tableView: UITableView) -> Int {
return interfaceSectionCount + peerSectionCount + 1 /* Add Peer */ + 1 /* On-Demand */
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section < interfaceSectionCount {
// Interface
return interfaceFieldsBySection[section].count
} else if (peerSectionCount > 0) && (section < (interfaceSectionCount + peerSectionCount)) {
// Peer
let peerIndex = (section - interfaceSectionCount)
let peerData = tunnelViewModel.peersData[peerIndex]
let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
return peerFieldsToShow.count
} else if section < (interfaceSectionCount + peerSectionCount + 1) {
// Add peer
return 1
} else {
// On-Demand Rules
if activateOnDemandSetting.isActivateOnDemandEnabled {
return 4
} else {
return 1
}
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if section < interfaceSectionCount {
// Interface
return (section == 0) ? "Interface" : nil
} else if (peerSectionCount > 0) && (section < (interfaceSectionCount + peerSectionCount)) {
// Peer
return "Peer"
} else if section == (interfaceSectionCount + peerSectionCount) {
// Add peer
return nil
} else {
assert(section == (interfaceSectionCount + peerSectionCount + 1))
return "On-Demand Activation"
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section < interfaceSectionCount {
return interfaceFieldCell(for: tableView, at: indexPath)
} else if (peerSectionCount > 0) && (indexPath.section < (interfaceSectionCount + peerSectionCount)) {
return peerCell(for: tableView, at: indexPath)
} else if indexPath.section == (interfaceSectionCount + peerSectionCount) {
return addPeerCell(for: tableView, at: indexPath)
} else {
return onDemandCell(for: tableView, at: indexPath)
}
}
private func interfaceFieldCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let interfaceData = tunnelViewModel.interfaceData
let field = interfaceFieldsBySection[indexPath.section][indexPath.row]
if field == .generateKeyPair {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewButtonCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewButtonCell
cell.buttonText = field.rawValue
cell.onTapped = { [weak self, weak interfaceData] in
if let interfaceData = interfaceData, let self = self {
interfaceData[.privateKey] = Curve25519.generatePrivateKey().base64EncodedString()
if let privateKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .privateKey),
let publicKeyRow = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
let privateKeyIndex = IndexPath(row: privateKeyRow, section: indexPath.section)
let publicKeyIndex = IndexPath(row: publicKeyRow, section: indexPath.section)
self.tableView.reloadRows(at: [privateKeyIndex, publicKeyIndex], with: .automatic)
}
}
}
return cell
} else if field == .publicKey {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewReadOnlyKeyValueCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewReadOnlyKeyValueCell
cell.key = field.rawValue
cell.value = interfaceData[field]
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewKeyValueCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewKeyValueCell
// Set key
cell.key = field.rawValue
// Set placeholder text
switch field {
case .name:
cell.placeholderText = "Required"
case .privateKey:
cell.placeholderText = "Required"
case .addresses:
cell.placeholderText = "Optional"
case .listenPort:
cell.placeholderText = "Automatic"
case .mtu:
cell.placeholderText = "Automatic"
case .dns:
cell.placeholderText = "Optional"
case .publicKey: break
case .generateKeyPair: break
}
// Set keyboardType
if field == .mtu || field == .listenPort {
cell.keyboardType = .numberPad
} else if field == .addresses || field == .dns {
cell.keyboardType = .numbersAndPunctuation
}
// Show erroring fields
cell.isValueValid = (!interfaceData.fieldsWithError.contains(field))
// Bind values to view model
cell.value = interfaceData[field]
if field == .dns { // While editing DNS, you might directly set exclude private IPs
cell.onValueBeingEdited = { [weak interfaceData] value in
interfaceData?[field] = value
}
} else {
cell.onValueChanged = { [weak interfaceData] value in
interfaceData?[field] = value
}
}
// Compute public key live
if field == .privateKey {
cell.onValueBeingEdited = { [weak self, weak interfaceData] value in
if let interfaceData = interfaceData, let self = self {
interfaceData[.privateKey] = value
if let row = self.interfaceFieldsBySection[indexPath.section].firstIndex(of: .publicKey) {
self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
}
}
}
}
return cell
}
}
private func peerCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let peerIndex = indexPath.section - interfaceFieldsBySection.count
let peerData = tunnelViewModel.peersData[peerIndex]
let peerFieldsToShow = peerData.shouldAllowExcludePrivateIPsControl ? peerFields : peerFields.filter { $0 != .excludePrivateIPs }
let field = peerFieldsToShow[indexPath.row]
if field == .deletePeer {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewButtonCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewButtonCell
cell.buttonText = field.rawValue
cell.hasDestructiveAction = true
cell.onTapped = { [weak self, weak peerData] in
guard let peerData = peerData else { return }
guard let self = self else { return }
self.showConfirmationAlert(message: "Delete this peer?", buttonTitle: "Delete", from: cell) { [weak self] in
guard let self = self else { return }
let removedSectionIndices = self.deletePeer(peer: peerData)
let shouldShowExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
tableView.performBatchUpdates({
self.tableView.deleteSections(removedSectionIndices, with: .automatic)
if shouldShowExcludePrivateIPs {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
self.tableView.insertRows(at: [rowIndexPath], with: .automatic)
}
}
})
}
}
return cell
} else if field == .excludePrivateIPs {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewSwitchCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewSwitchCell
cell.message = field.rawValue
cell.isEnabled = peerData.shouldAllowExcludePrivateIPsControl
cell.isOn = peerData.excludePrivateIPsValue
cell.onSwitchToggled = { [weak self] (isOn) in
guard let self = self else { return }
peerData.excludePrivateIPsValueChanged(isOn: isOn, dnsServers: self.tunnelViewModel.interfaceData[.dns])
if let row = self.peerFields.firstIndex(of: .allowedIPs) {
self.tableView.reloadRows(at: [IndexPath(row: row, section: indexPath.section)], with: .none)
}
}
return cell
} else {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewKeyValueCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewKeyValueCell
// Set key
cell.key = field.rawValue
// Set placeholder text
switch field {
case .publicKey:
cell.placeholderText = "Required"
case .preSharedKey:
cell.placeholderText = "Optional"
case .endpoint:
cell.placeholderText = "Optional"
case .allowedIPs:
cell.placeholderText = "Optional"
case .persistentKeepAlive:
cell.placeholderText = "Off"
case .excludePrivateIPs: break
case .deletePeer: break
}
// Set keyboardType
if field == .persistentKeepAlive {
cell.keyboardType = .numberPad
} else if field == .allowedIPs {
cell.keyboardType = .numbersAndPunctuation
}
// Show erroring fields
cell.isValueValid = (!peerData.fieldsWithError.contains(field))
// Bind values to view model
cell.value = peerData[field]
if field != .allowedIPs {
cell.onValueChanged = { [weak peerData] value in
peerData?[field] = value
}
}
// Compute state of exclude private IPs live
if field == .allowedIPs {
cell.onValueBeingEdited = { [weak self, weak peerData] value in
if let peerData = peerData, let self = self {
let oldValue = peerData.shouldAllowExcludePrivateIPsControl
peerData[.allowedIPs] = value
if oldValue != peerData.shouldAllowExcludePrivateIPsControl {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
if peerData.shouldAllowExcludePrivateIPsControl {
self.tableView.insertRows(at: [IndexPath(row: row, section: indexPath.section)], with: .automatic)
} else {
self.tableView.deleteRows(at: [IndexPath(row: row, section: indexPath.section)], with: .automatic)
}
}
}
}
}
}
return cell
}
}
private func addPeerCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewButtonCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewButtonCell
cell.buttonText = "Add peer"
cell.onTapped = { [weak self] in
guard let self = self else { return }
let shouldHideExcludePrivateIPs = (self.tunnelViewModel.peersData.count == 1 && self.tunnelViewModel.peersData[0].shouldAllowExcludePrivateIPsControl)
let addedSectionIndices = self.appendEmptyPeer()
tableView.performBatchUpdates({
tableView.insertSections(addedSectionIndices, with: .automatic)
if shouldHideExcludePrivateIPs {
if let row = self.peerFields.firstIndex(of: .excludePrivateIPs) {
let rowIndexPath = IndexPath(row: row, section: self.interfaceFieldsBySection.count /* First peer section */)
self.tableView.deleteRows(at: [rowIndexPath], with: .automatic)
}
}
}, completion: nil)
}
return cell
}
private func onDemandCell(for tableView: UITableView, at indexPath: IndexPath) -> UITableViewCell {
assert(indexPath.section == interfaceSectionCount + peerSectionCount + 1)
if indexPath.row == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewSwitchCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewSwitchCell
cell.message = "Activate on demand"
cell.isOn = activateOnDemandSetting.isActivateOnDemandEnabled
cell.onSwitchToggled = { [weak self] (isOn) in
guard let self = self else { return }
let indexPaths: [IndexPath] = (1 ..< 4).map { IndexPath(row: $0, section: indexPath.section) }
if isOn {
self.activateOnDemandSetting.isActivateOnDemandEnabled = true
if self.activateOnDemandSetting.activateOnDemandOption == .none {
self.activateOnDemandSetting.activateOnDemandOption = TunnelViewModel.defaultActivateOnDemandOption()
}
self.tableView.insertRows(at: indexPaths, with: .automatic)
} else {
self.activateOnDemandSetting.isActivateOnDemandEnabled = false
self.tableView.deleteRows(at: indexPaths, with: .automatic)
}
}
return cell
} else {
assert(indexPath.row < 4)
let cell = tableView.dequeueReusableCell(withIdentifier: TunnelEditTableViewSelectionListCell.reuseIdentifier, for: indexPath) as! TunnelEditTableViewSelectionListCell
let rowOption = activateOnDemandOptions[indexPath.row - 1]
let selectedOption = activateOnDemandSetting.activateOnDemandOption
assert(selectedOption != .none)
cell.message = TunnelViewModel.activateOnDemandOptionText(for: rowOption)
cell.isChecked = (selectedOption == rowOption)
return cell
}
}
func appendEmptyPeer() -> IndexSet {
tunnelViewModel.appendEmptyPeer()
let addedPeerIndex = tunnelViewModel.peersData.count - 1
let addedSectionIndices = IndexSet(integer: interfaceSectionCount + addedPeerIndex)
return addedSectionIndices
}
func deletePeer(peer: TunnelViewModel.PeerData) -> IndexSet {
assert(peer.index < tunnelViewModel.peersData.count)
tunnelViewModel.deletePeer(peer: peer)
let removedSectionIndices = IndexSet(integer: (interfaceSectionCount + peer.index))
return removedSectionIndices
}
func showConfirmationAlert(message: String, buttonTitle: String, from sourceView: UIView, onConfirmed: @escaping (() -> Void)) {
let destroyAction = UIAlertAction(title: buttonTitle, style: .destructive) { (_) in
onConfirmed()
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel)
let alert = UIAlertController(title: "", message: message, preferredStyle: .actionSheet)
alert.addAction(destroyAction)
alert.addAction(cancelAction)
// popoverPresentationController will be nil on iPhone and non-nil on iPad
alert.popoverPresentationController?.sourceView = sourceView
alert.popoverPresentationController?.sourceRect = sourceView.bounds
self.present(alert, animated: true, completion: nil)
}
}
// MARK: UITableViewDelegate
extension TunnelEditTableViewController {
override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
if indexPath.section == (interfaceSectionCount + peerSectionCount + 1) {
return (indexPath.row > 0) ? indexPath : nil
} else {
return nil
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let section = indexPath.section
let row = indexPath.row
assert(section == (interfaceSectionCount + peerSectionCount + 1))
assert(row > 0)
let option = activateOnDemandOptions[row - 1]
assert(option != .none)
activateOnDemandSetting.activateOnDemandOption = option
let indexPaths: [IndexPath] = (1 ..< 4).map { IndexPath(row: $0, section: section) }
tableView.reloadRows(at: indexPaths, with: .automatic)
}
}
class TunnelEditTableViewKeyValueCell: UITableViewCell {
static let reuseIdentifier = "TunnelEditTableViewKeyValueCell"
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 isValueValid: Bool = true {
didSet {
if isValueValid {
keyLabel.textColor = UIColor.black
} else {
keyLabel.textColor = UIColor.red
}
}
}
var keyboardType: UIKeyboardType {
get { return valueTextField.keyboardType }
set(value) { valueTextField.keyboardType = value }
}
var onValueChanged: ((String) -> Void)?
var onValueBeingEdited: ((String) -> Void)?
let keyLabel: UILabel
let valueTextField: UITextField
var isStackedHorizontally: Bool = false
var isStackedVertically: Bool = false
var contentSizeBasedConstraints: [NSLayoutConstraint] = []
private var textFieldValueOnBeginEditing: String = ""
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
valueTextField = UITextField()
valueTextField.font = UIFont.preferredFont(forTextStyle: .body)
valueTextField.adjustsFontForContentSizeCategory = true
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
keyLabel.textAlignment = .right
let widthRatioConstraint = NSLayoutConstraint(item: keyLabel, attribute: .width,
relatedBy: .equal,
toItem: self, attribute: .width,
multiplier: 0.4, constant: 0)
// The "Persistent Keepalive" key doesn't fit into 0.4 * width on the iPhone SE,
// so set a CR priority > the 0.4-constraint's priority.
widthRatioConstraint.priority = .defaultHigh + 1
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 2, for: .horizontal)
NSLayoutConstraint.activate([
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
keyLabel.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5),
widthRatioConstraint
])
contentView.addSubview(valueTextField)
valueTextField.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueTextField.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalToSystemSpacingBelow: valueTextField.bottomAnchor, multiplier: 0.5)
])
valueTextField.delegate = self
valueTextField.autocapitalizationType = .none
valueTextField.autocorrectionType = .no
valueTextField.spellCheckingType = .no
configureForContentSize()
}
func configureForContentSize() {
var constraints: [NSLayoutConstraint] = []
if self.traitCollection.preferredContentSizeCategory.isAccessibilityCategory {
// Stack vertically
if !isStackedVertically {
constraints = [
valueTextField.topAnchor.constraint(equalToSystemSpacingBelow: keyLabel.bottomAnchor, multiplier: 0.5),
valueTextField.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),
valueTextField.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueTextField.topAnchor.constraint(equalToSystemSpacingBelow: contentView.layoutMarginsGuide.topAnchor, multiplier: 0.5)
]
isStackedHorizontally = true
isStackedVertically = false
}
}
if !constraints.isEmpty {
NSLayoutConstraint.deactivate(self.contentSizeBasedConstraints)
NSLayoutConstraint.activate(constraints)
self.contentSizeBasedConstraints = constraints
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
placeholderText = ""
isValueValid = true
keyboardType = .default
onValueChanged = nil
onValueBeingEdited = nil
configureForContentSize()
}
}
extension TunnelEditTableViewKeyValueCell: UITextFieldDelegate {
func textFieldDidBeginEditing(_ textField: UITextField) {
textFieldValueOnBeginEditing = textField.text ?? ""
isValueValid = true
}
func textFieldDidEndEditing(_ textField: UITextField) {
let isModified = (textField.text ?? "" != textFieldValueOnBeginEditing)
guard isModified else { return }
if let onValueChanged = onValueChanged {
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
}
}
class TunnelEditTableViewReadOnlyKeyValueCell: CopyableLabelTableViewCell {
static let reuseIdentifier = "TunnelEditTableViewReadOnlyKeyValueCell"
var key: String {
get { return keyLabel.text ?? "" }
set(value) {keyLabel.text = value }
}
var value: String {
get { return valueLabel.text }
set(value) { valueLabel.text = value }
}
let keyLabel: UILabel
let valueLabel: ScrollableLabel
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
keyLabel = UILabel()
keyLabel.font = UIFont.preferredFont(forTextStyle: .body)
keyLabel.adjustsFontForContentSizeCategory = true
valueLabel = ScrollableLabel()
valueLabel.label.font = UIFont.preferredFont(forTextStyle: .body)
valueLabel.label.adjustsFontForContentSizeCategory = true
super.init(style: style, reuseIdentifier: reuseIdentifier)
keyLabel.textColor = UIColor.gray
valueLabel.textColor = UIColor.gray
contentView.addSubview(keyLabel)
keyLabel.translatesAutoresizingMaskIntoConstraints = false
keyLabel.textAlignment = .right
let widthRatioConstraint = NSLayoutConstraint(item: keyLabel, attribute: .width,
relatedBy: .equal,
toItem: self, attribute: .width,
multiplier: 0.4, constant: 0)
// In case the key doesn't fit into 0.4 * width,
// so set a CR priority > the 0.4-constraint's priority.
widthRatioConstraint.priority = .defaultHigh + 1
keyLabel.setContentCompressionResistancePriority(.defaultHigh + 2, for: .horizontal)
NSLayoutConstraint.activate([
keyLabel.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
keyLabel.leftAnchor.constraint(equalTo: contentView.layoutMarginsGuide.leftAnchor),
widthRatioConstraint
])
contentView.addSubview(valueLabel)
valueLabel.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
valueLabel.centerYAnchor.constraint(equalTo: contentView.centerYAnchor),
valueLabel.leftAnchor.constraint(equalToSystemSpacingAfter: keyLabel.rightAnchor, multiplier: 1),
valueLabel.rightAnchor.constraint(equalTo: contentView.layoutMarginsGuide.rightAnchor)
])
}
override var textToCopy: String? {
return self.valueLabel.text
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
key = ""
value = ""
}
}
class TunnelEditTableViewButtonCell: UITableViewCell {
static let reuseIdentifier = "TunnelEditTableViewButtonCell"
var buttonText: String {
get { return button.title(for: .normal) ?? "" }
set(value) { button.setTitle(value, for: .normal) }
}
var hasDestructiveAction: Bool {
get { return button.tintColor == UIColor.red }
set(value) { button.tintColor = value ? UIColor.red : buttonStandardTintColor }
}
var onTapped: (() -> Void)?
let button: UIButton
var buttonStandardTintColor: UIColor
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
button = UIButton(type: .system)
button.titleLabel?.font = UIFont.preferredFont(forTextStyle: .body)
button.titleLabel?.adjustsFontForContentSizeCategory = true
buttonStandardTintColor = button.tintColor
super.init(style: style, reuseIdentifier: reuseIdentifier)
contentView.addSubview(button)
button.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
button.topAnchor.constraint(equalTo: contentView.layoutMarginsGuide.topAnchor),
contentView.layoutMarginsGuide.bottomAnchor.constraint(equalTo: button.bottomAnchor),
button.centerXAnchor.constraint(equalTo: contentView.centerXAnchor)
])
button.addTarget(self, action: #selector(buttonTapped), for: .touchUpInside)
}
@objc func buttonTapped() {
onTapped?()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
buttonText = ""
onTapped = nil
hasDestructiveAction = false
}
}
class TunnelEditTableViewSwitchCell: UITableViewCell {
static let reuseIdentifier = "TunnelEditTableViewSwitchCell"
var message: String {
get { return textLabel?.text ?? "" }
set(value) { textLabel!.text = value }
}
var isOn: Bool {
get { return switchView.isOn }
set(value) { switchView.isOn = value }
}
var isEnabled: Bool {
get { return switchView.isEnabled }
set(value) {
switchView.isEnabled = value
textLabel?.textColor = value ? UIColor.black : UIColor.gray
}
}
var onSwitchToggled: ((Bool) -> Void)?
let switchView: UISwitch
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
switchView = UISwitch()
super.init(style: .default, reuseIdentifier: reuseIdentifier)
accessoryView = switchView
switchView.addTarget(self, action: #selector(switchToggled), for: .valueChanged)
}
@objc func switchToggled() {
onSwitchToggled?(switchView.isOn)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
message = ""
isOn = false
}
}
class TunnelEditTableViewSelectionListCell: UITableViewCell {
static let reuseIdentifier = "TunnelEditTableViewSelectionListCell"
var message: String {
get { return textLabel?.text ?? "" }
set(value) { textLabel!.text = value }
}
var isChecked: Bool {
didSet {
accessoryType = isChecked ? .checkmark : .none
}
}
override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
isChecked = false
super.init(style: .default, reuseIdentifier: reuseIdentifier)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func prepareForReuse() {
super.prepareForReuse()
message = ""
isChecked = false
}
}
|