-
Notifications
You must be signed in to change notification settings - Fork 0
/
SearchTextField.swift
751 lines (613 loc) · 30.1 KB
/
SearchTextField.swift
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
//
// SearchTextField.swift
// Weather
//
// Created by POLARIS on 11/04/17.
// Copyright © 2017 POLARIS. All rights reserved.
//
import UIKit
open class SearchTextField: UITextField {
////////////////////////////////////////////////////////////////////////
// Public interface
/// Maximum number of results to be shown in the suggestions list
open var maxNumberOfResults = 0
/// Maximum height of the results list
open var maxResultsListHeight = 0
/// Indicate if this field has been interacted with yet
open var interactedWith = false
/// Indicate if keyboard is showing or not
open var keyboardIsShowing = false
/// Set your custom visual theme, or just choose between pre-defined SearchTextFieldTheme.lightTheme() and SearchTextFieldTheme.darkTheme() themes
open var theme = SearchTextFieldTheme.lightTheme() {
didSet {
tableView?.reloadData()
if let placeholderColor = theme.placeholderColor {
if let placeholderString = placeholder {
self.attributedPlaceholder = NSAttributedString(string: placeholderString, attributes: [NSAttributedStringKey.foregroundColor: placeholderColor])
}
self.placeholderLabel?.textColor = placeholderColor
}
}
}
/// Show the suggestions list without filter when the text field is focused
open var startVisible = false
/// Show the suggestions list without filter even if the text field is not focused
open var startVisibleWithoutInteraction = false {
didSet {
if startVisibleWithoutInteraction {
textFieldDidChange()
}
}
}
/// Set an array of SearchTextFieldItem's to be used for suggestions
open func filterItems(_ items: [SearchTextFieldItem]) {
filterDataSource = items
}
/// Set an array of strings to be used for suggestions
open func filterStrings(_ strings: [String]) {
var items = [SearchTextFieldItem]()
for value in strings {
items.append(SearchTextFieldItem(title: value))
}
filterItems(items)
}
/// Set an array of strings to be used for suggestions
open func addCityStr( city : String) {
filterDataSource.append( SearchTextFieldItem(title: city) )
}
/// Delete an array of strings to be used for suggestions
open func delCityStr() {
filterDataSource.removeAll()
}
/// Closure to handle when the user pick an item
open var itemSelectionHandler: SearchTextFieldItemHandler?
/// Closure to handle when the user stops typing
open var userStoppedTypingHandler: (() -> Void)?
/// Set your custom set of attributes in order to highlight the string found in each item
open var highlightAttributes: [NSAttributedStringKey: AnyObject] = [NSAttributedStringKey(rawValue: NSAttributedStringKey.font.rawValue):UIFont.boldSystemFont(ofSize: 12)]
/// Start showing the default loading indicator, useful for searches that take some time.
open func showLoadingIndicator() {
self.rightViewMode = .always
indicator.startAnimating()
}
/// Force the results list to adapt to RTL languages
open var forceRightToLeft = false
/// Hide the default loading indicator
open func stopLoadingIndicator() {
self.rightViewMode = .never
indicator.stopAnimating()
}
/// When InlineMode is true, the suggestions appear in the same line than the entered string. It's useful for email domains suggestion for example.
open var inlineMode: Bool = false {
didSet {
if inlineMode == true {
autocorrectionType = .no
spellCheckingType = .no
}
}
}
/// Only valid when InlineMode is true. The suggestions appear after typing the provided string (or even better a character like '@')
open var startFilteringAfter: String?
/// Min number of characters to start filtering
open var minCharactersNumberToStartFiltering: Int = 0
/// If startFilteringAfter is set, and startSuggestingInmediately is true, the list of suggestions appear inmediately
open var startSuggestingInmediately = false
/// Allow to decide the comparision options
open var comparisonOptions: NSString.CompareOptions = [.caseInsensitive]
/// Set the results list's header
open var resultsListHeader: UIView?
////////////////////////////////////////////////////////////////////////
// Private implementation
fileprivate var tableView: UITableView?
fileprivate var shadowView: UIView?
fileprivate var direction: Direction = .down
fileprivate var fontConversionRate: CGFloat = 0.7
fileprivate var keyboardFrame: CGRect?
fileprivate var timer: Timer? = nil
fileprivate var placeholderLabel: UILabel?
fileprivate static let cellIdentifier = "APSearchTextFieldCell"
fileprivate let indicator = UIActivityIndicatorView(activityIndicatorStyle: .gray)
fileprivate var maxTableViewSize: CGFloat = 0
fileprivate var filteredResults = [SearchTextFieldItem]()
fileprivate var filterDataSource = [SearchTextFieldItem]() {
didSet {
filter(forceShowAll: false)
buildSearchTableView()
if startVisibleWithoutInteraction {
textFieldDidChange()
}
}
}
fileprivate var currentInlineItem = ""
deinit {
NotificationCenter.default.removeObserver(self)
}
open override func willMove(toWindow newWindow: UIWindow?) {
super.willMove(toWindow: newWindow)
tableView?.removeFromSuperview()
}
override open func willMove(toSuperview newSuperview: UIView?) {
super.willMove(toSuperview: newSuperview)
self.addTarget(self, action: #selector(SearchTextField.textFieldDidChange), for: .editingChanged)
self.addTarget(self, action: #selector(SearchTextField.textFieldDidBeginEditing), for: .editingDidBegin)
self.addTarget(self, action: #selector(SearchTextField.textFieldDidEndEditing), for: .editingDidEnd)
self.addTarget(self, action: #selector(SearchTextField.textFieldDidEndEditingOnExit), for: .editingDidEndOnExit)
NotificationCenter.default.addObserver(self, selector: #selector(SearchTextField.keyboardWillShow(_:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(SearchTextField.keyboardWillHide(_:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(SearchTextField.keyboardDidChangeFrame(_:)), name: NSNotification.Name.UIKeyboardDidChangeFrame, object: nil)
}
override open func layoutSubviews() {
super.layoutSubviews()
if inlineMode {
buildPlaceholderLabel()
} else {
buildSearchTableView()
}
// Create the loading indicator
indicator.hidesWhenStopped = true
self.rightView = indicator
}
override open func rightViewRect(forBounds bounds: CGRect) -> CGRect {
var rightFrame = super.rightViewRect(forBounds: bounds)
rightFrame.origin.x -= 5
return rightFrame
}
// Create the filter table and shadow view
fileprivate func buildSearchTableView() {
if let tableView = tableView, let shadowView = shadowView {
tableView.layer.masksToBounds = true
tableView.layer.borderWidth = 0.5
tableView.dataSource = self
tableView.delegate = self
tableView.separatorInset = UIEdgeInsets.zero
tableView.tableHeaderView = resultsListHeader
if forceRightToLeft {
tableView.semanticContentAttribute = .forceRightToLeft
}
shadowView.backgroundColor = UIColor.lightText
shadowView.layer.shadowColor = UIColor.black.cgColor
shadowView.layer.shadowOffset = CGSize.zero
shadowView.layer.shadowOpacity = 1
self.window?.addSubview(tableView)
} else {
tableView = UITableView(frame: CGRect.zero)
shadowView = UIView(frame: CGRect.zero)
}
redrawSearchTableView()
}
fileprivate func buildPlaceholderLabel() {
var newRect = self.placeholderRect(forBounds: self.bounds)
var caretRect = self.caretRect(for: self.beginningOfDocument)
let textRect = self.textRect(forBounds: self.bounds)
if let range = textRange(from: beginningOfDocument, to: endOfDocument) {
caretRect = self.firstRect(for: range)
}
newRect.origin.x = caretRect.origin.x + caretRect.size.width + textRect.origin.x
newRect.size.width = newRect.size.width - newRect.origin.x
if let placeholderLabel = placeholderLabel {
placeholderLabel.font = self.font
placeholderLabel.frame = newRect
} else {
placeholderLabel = UILabel(frame: newRect)
placeholderLabel?.font = self.font
placeholderLabel?.backgroundColor = UIColor.clear
placeholderLabel?.lineBreakMode = .byClipping
if let placeholderColor = self.attributedPlaceholder?.attribute(NSAttributedStringKey.foregroundColor, at: 0, effectiveRange: nil) as? UIColor {
placeholderLabel?.textColor = placeholderColor
} else {
placeholderLabel?.textColor = UIColor ( red: 0.8, green: 0.8, blue: 0.8, alpha: 1.0 )
}
self.addSubview(placeholderLabel!)
}
}
// Re-set frames and theme colors
fileprivate func redrawSearchTableView() {
if inlineMode {
tableView?.isHidden = true
return
}
if let tableView = tableView {
guard let frame = self.superview?.convert(self.frame, to: nil) else { return }
if self.direction == .down {
var tableHeight: CGFloat = 0
if keyboardIsShowing, let keyboardHeight = keyboardFrame?.size.height {
tableHeight = min((tableView.contentSize.height), (UIScreen.main.bounds.size.height - frame.origin.y - frame.height - keyboardHeight))
} else {
tableHeight = min((tableView.contentSize.height), (UIScreen.main.bounds.size.height - frame.origin.y - frame.height))
}
if maxResultsListHeight > 0 {
tableHeight = min(tableHeight, CGFloat(maxResultsListHeight))
}
// Set a bottom margin of 10p
if tableHeight < tableView.contentSize.height {
tableHeight -= 10
}
var tableViewFrame = CGRect(x: 0, y: 0, width: frame.size.width - 4, height: tableHeight)
tableViewFrame.origin = self.convert(tableViewFrame.origin, to: nil)
tableViewFrame.origin.x += 2
tableViewFrame.origin.y += frame.size.height + 2
UIView.animate(withDuration: 0.2, animations: { [weak self] in
self?.tableView?.frame = tableViewFrame
})
var shadowFrame = CGRect(x: 0, y: 0, width: frame.size.width - 6, height: 1)
shadowFrame.origin = self.convert(shadowFrame.origin, to: nil)
shadowFrame.origin.x += 3
shadowFrame.origin.y = tableView.frame.origin.y
shadowView!.frame = shadowFrame
} else {
let tableHeight = min((tableView.contentSize.height), (UIScreen.main.bounds.size.height - frame.origin.y - theme.cellHeight))
UIView.animate(withDuration: 0.2, animations: { [weak self] in
self?.tableView?.frame = CGRect(x: frame.origin.x + 2, y: (frame.origin.y - tableHeight), width: frame.size.width - 4, height: tableHeight)
self?.shadowView?.frame = CGRect(x: frame.origin.x + 3, y: (frame.origin.y + 3), width: frame.size.width - 6, height: 1)
})
}
superview?.bringSubview(toFront: tableView)
superview?.bringSubview(toFront: shadowView!)
if self.isFirstResponder {
superview?.bringSubview(toFront: self)
}
tableView.layer.borderColor = theme.borderColor.cgColor
tableView.layer.cornerRadius = 2
tableView.separatorColor = theme.separatorColor
tableView.backgroundColor = theme.bgColor
tableView.reloadData()
}
}
// Handle keyboard events
@objc open func keyboardWillShow(_ notification: Notification) {
if !keyboardIsShowing && isEditing {
keyboardIsShowing = true
keyboardFrame = ((notification as NSNotification).userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
interactedWith = true
prepareDrawTableResult()
}
}
@objc open func keyboardWillHide(_ notification: Notification) {
if keyboardIsShowing {
keyboardIsShowing = false
direction = .down
redrawSearchTableView()
}
}
@objc open func keyboardDidChangeFrame(_ notification: Notification) {
DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { [weak self] in
self?.keyboardFrame = ((notification as NSNotification).userInfo![UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
self?.prepareDrawTableResult()
}
}
@objc open func typingDidStop() {
if userStoppedTypingHandler != nil {
self.userStoppedTypingHandler!()
}
}
// Handle text field changes
@objc open func textFieldDidChange() {
if !inlineMode && tableView == nil {
buildSearchTableView()
}
interactedWith = true
// Detect pauses while typing
timer?.invalidate()
timer = Timer.scheduledTimer(timeInterval: 0.8, target: self, selector: #selector(SearchTextField.typingDidStop), userInfo: self, repeats: false)
if text!.isEmpty {
clearResults()
tableView?.reloadData()
if startVisible || startVisibleWithoutInteraction {
filter(forceShowAll: true)
}
self.placeholderLabel?.text = ""
} else {
filter(forceShowAll: false)
prepareDrawTableResult()
}
buildPlaceholderLabel()
}
@objc open func textFieldDidBeginEditing() {
if (startVisible || startVisibleWithoutInteraction) && text!.isEmpty {
clearResults()
filter(forceShowAll: true)
}
placeholderLabel?.attributedText = nil
}
@objc open func textFieldDidEndEditing() {
clearResults()
tableView?.reloadData()
placeholderLabel?.attributedText = nil
}
@objc open func textFieldDidEndEditingOnExit() {
if let firstElement = filteredResults.first {
if let itemSelectionHandler = self.itemSelectionHandler {
itemSelectionHandler(filteredResults, 0)
}
else {
if inlineMode, let filterAfter = startFilteringAfter {
let stringElements = self.text?.components(separatedBy: filterAfter)
self.text = stringElements!.first! + filterAfter + firstElement.title
} else {
self.text = firstElement.title
}
}
}
}
open func hideResultsList() {
if let tableFrame:CGRect = tableView?.frame {
let newFrame = CGRect(x: tableFrame.origin.x, y: tableFrame.origin.y, width: tableFrame.size.width, height: 0.0)
UIView.animate(withDuration: 0.2, animations: { [weak self] in
self?.tableView?.frame = newFrame
})
}
}
/* fileprivate func filter(forceShowAll addAll: Bool) {
clearResults()
if text!.count == 0 {
return
}
if text!.count < minCharactersNumberToStartFiltering {
return
}
// Creates an action that fetches location names from the network
for iRes in result
{
let item = SearchTextFieldItem( title: cities )
if !self.inlineMode {
// Find text in title and subtitle
let titleFilterRange = (item.title as NSString).range(of: self.text!, options: self.comparisonOptions)
let subtitleFilterRange = item.subtitle != nil ? (item.subtitle! as NSString).range(of: self.text!, options: self.comparisonOptions) : NSMakeRange(NSNotFound, 0)
if titleFilterRange.location != NSNotFound || subtitleFilterRange.location != NSNotFound || addAll {
item.attributedTitle = NSMutableAttributedString(string: item.title)
item.attributedSubtitle = NSMutableAttributedString(string: (item.subtitle != nil ? item.subtitle! : ""))
item.attributedTitle!.setAttributes(self.highlightAttributes, range: titleFilterRange)
if subtitleFilterRange.location != NSNotFound {
item.attributedSubtitle!.setAttributes(self.highlightAttributesForSubtitle(), range: subtitleFilterRange)
}
self.filteredResults.append(item)
}
} else {
var textToFilter = self.text!.lowercased()
if self.inlineMode, let filterAfter = self.startFilteringAfter {
if let suffixToFilter = textToFilter.components(separatedBy: filterAfter).last, (suffixToFilter != "" || self.startSuggestingInmediately == true), textToFilter != suffixToFilter {
textToFilter = suffixToFilter
} else {
self.placeholderLabel?.text = ""
return
}
}
if item.title.lowercased().hasPrefix(textToFilter) {
let indexFrom = textToFilter.index(textToFilter.startIndex, offsetBy: textToFilter.count)
let itemSuffix = item.title[indexFrom...]
item.attributedTitle = NSMutableAttributedString(string: String(itemSuffix))
self.filteredResults.append(item)
}
}
}
DispatchQueue.main.async {
self.tableView?.reloadData()
if self.inlineMode {
self.handleInlineFiltering()
}
self.prepareDrawTableResult()
}
}
})
task.resume()
}
}
*/
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
fileprivate func filter(forceShowAll addAll: Bool) {
clearResults()
if text!.count <= minCharactersNumberToStartFiltering {
return
}
var searchtxt = text!
searchtxt = searchtxt.uppercased()
var cityStr = [String]()
// If text's charater check
if searchtxt[searchtxt.index(searchtxt.startIndex, offsetBy: 0 )] >= "A" &&
searchtxt[searchtxt.index(searchtxt.startIndex, offsetBy: 0 )] <= "Z" {
let firstStr = String(searchtxt[searchtxt.index(searchtxt.startIndex, offsetBy: 0 )]) + "_cityname"
if let path = Bundle.main.path(forResource: firstStr, ofType: "txt") {
do {
let jsonData = try Data(contentsOf: URL(fileURLWithPath: path), options: .dataReadingMapped)
let jsonResult = try JSONSerialization.jsonObject(with: jsonData, options: .allowFragments) as! [String]
for city in jsonResult {
cityStr.append( city )
}
} catch {
print("Error parsing jSON: \(error)")
}
}
}
else {
return
}
for i in 0 ..< cityStr.count {
let item = SearchTextFieldItem(title: cityStr[i])
if !inlineMode {
// Find text in title and subtitle
let titleFilterRange = (item.title as NSString).range(of: text!, options: comparisonOptions)
let subtitleFilterRange = item.subtitle != nil ? (item.subtitle! as NSString).range(of: text!, options: comparisonOptions) : NSMakeRange(NSNotFound, 0)
if titleFilterRange.location != NSNotFound || subtitleFilterRange.location != NSNotFound || addAll {
item.attributedTitle = NSMutableAttributedString(string: item.title)
item.attributedSubtitle = NSMutableAttributedString(string: (item.subtitle != nil ? item.subtitle! : ""))
item.attributedTitle!.setAttributes(highlightAttributes, range: titleFilterRange)
if subtitleFilterRange.location != NSNotFound {
item.attributedSubtitle!.setAttributes(highlightAttributesForSubtitle(), range: subtitleFilterRange)
}
filteredResults.append(item)
}
} else {
var textToFilter = text!.lowercased()
if inlineMode, let filterAfter = startFilteringAfter {
if let suffixToFilter = textToFilter.components(separatedBy: filterAfter).last, (suffixToFilter != "" || startSuggestingInmediately == true), textToFilter != suffixToFilter {
textToFilter = suffixToFilter
} else {
placeholderLabel?.text = ""
return
}
}
if item.title.lowercased().hasPrefix(textToFilter) {
let indexFrom = textToFilter.index(textToFilter.startIndex, offsetBy: textToFilter.count)
let itemSuffix = item.title[indexFrom...]
item.attributedTitle = NSMutableAttributedString(string: String(itemSuffix))
filteredResults.append(item)
}
}
}
tableView?.reloadData()
if inlineMode {
handleInlineFiltering()
}
}
// Clean filtered results
fileprivate func clearResults() {
filteredResults.removeAll()
tableView?.removeFromSuperview()
}
// Look for Font attribute, and if it exists, adapt to the subtitle font size
fileprivate func highlightAttributesForSubtitle() -> [NSAttributedStringKey: AnyObject] {
var highlightAttributesForSubtitle = [NSAttributedStringKey: AnyObject]()
for attr in highlightAttributes {
if attr.0 == NSAttributedStringKey.font {
let fontName = (attr.1 as! UIFont).fontName
let pointSize = (attr.1 as! UIFont).pointSize * fontConversionRate
highlightAttributesForSubtitle[attr.0] = UIFont(name: fontName, size: pointSize)
} else {
highlightAttributesForSubtitle[attr.0] = attr.1
}
}
return highlightAttributesForSubtitle
}
// Handle inline behaviour
func handleInlineFiltering() {
if let text = self.text {
if text == "" {
self.placeholderLabel?.attributedText = nil
} else {
if let firstResult = filteredResults.first {
self.placeholderLabel?.attributedText = firstResult.attributedTitle
} else {
self.placeholderLabel?.attributedText = nil
}
}
}
}
// MARK: - Prepare for draw table result
fileprivate func prepareDrawTableResult() {
guard let frame = self.superview?.convert(self.frame, to: UIApplication.shared.keyWindow) else { return }
if let keyboardFrame = keyboardFrame {
var newFrame = frame
newFrame.size.height += theme.cellHeight
if keyboardFrame.intersects(newFrame) {
direction = .up
} else {
direction = .down
}
redrawSearchTableView()
} else {
if self.center.y + theme.cellHeight > UIApplication.shared.keyWindow!.frame.size.height {
direction = .up
} else {
direction = .down
}
}
}
}
extension SearchTextField: UITableViewDelegate, UITableViewDataSource {
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
tableView.isHidden = !interactedWith || (filteredResults.count == 0)
shadowView?.isHidden = !interactedWith || (filteredResults.count == 0)
if maxNumberOfResults > 0 {
return min(filteredResults.count, maxNumberOfResults)
} else {
return filteredResults.count
}
}
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: SearchTextField.cellIdentifier)
if cell == nil {
cell = UITableViewCell(style: .subtitle, reuseIdentifier: SearchTextField.cellIdentifier)
}
cell!.backgroundColor = UIColor.clear
cell!.layoutMargins = UIEdgeInsets.zero
cell!.preservesSuperviewLayoutMargins = false
cell!.textLabel?.font = theme.font
cell!.detailTextLabel?.font = UIFont(name: theme.font.fontName, size: theme.font.pointSize * fontConversionRate)
cell!.textLabel?.textColor = theme.fontColor
cell!.detailTextLabel?.textColor = theme.fontColor
cell!.textLabel?.text = filteredResults[(indexPath as NSIndexPath).row].title
cell!.detailTextLabel?.text = filteredResults[(indexPath as NSIndexPath).row].subtitle
cell!.textLabel?.attributedText = filteredResults[(indexPath as NSIndexPath).row].attributedTitle
cell!.detailTextLabel?.attributedText = filteredResults[(indexPath as NSIndexPath).row].attributedSubtitle
cell!.imageView?.image = filteredResults[(indexPath as NSIndexPath).row].image
cell!.selectionStyle = .none
return cell!
}
public func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return theme.cellHeight
}
public func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if itemSelectionHandler == nil {
self.text = filteredResults[(indexPath as NSIndexPath).row].title
} else {
let index = indexPath.row
itemSelectionHandler!(filteredResults, index)
}
clearResults()
}
}
////////////////////////////////////////////////////////////////////////
// Search Text Field Theme
public struct SearchTextFieldTheme {
public var cellHeight: CGFloat
public var bgColor: UIColor
public var borderColor: UIColor
public var separatorColor: UIColor
public var font: UIFont
public var fontColor: UIColor
public var placeholderColor: UIColor?
init(cellHeight: CGFloat, bgColor: UIColor, borderColor: UIColor, separatorColor: UIColor, font: UIFont, fontColor: UIColor) {
self.cellHeight = cellHeight
self.borderColor = borderColor
self.separatorColor = separatorColor
self.bgColor = bgColor
self.font = font
self.fontColor = fontColor
}
public static func lightTheme() -> SearchTextFieldTheme {
return SearchTextFieldTheme(cellHeight: 30, bgColor: UIColor.clear, borderColor: UIColor.clear, separatorColor: UIColor.clear, font: UIFont.systemFont(ofSize: 14), fontColor: UIColor.black)
}
public static func darkTheme() -> SearchTextFieldTheme {
return SearchTextFieldTheme(cellHeight: 30, bgColor: UIColor (red: 0.8, green: 0.8, blue: 0.8, alpha: 0.6), borderColor: UIColor (red: 0.7, green: 0.7, blue: 0.7, alpha: 1.0), separatorColor: UIColor.clear, font: UIFont.systemFont(ofSize: 14), fontColor: UIColor.white)
}
}
////////////////////////////////////////////////////////////////////////
// Filter Item
open class SearchTextFieldItem {
// Private vars
fileprivate var attributedTitle: NSMutableAttributedString?
fileprivate var attributedSubtitle: NSMutableAttributedString?
// Public interface
public var title: String
public var subtitle: String?
public var image: UIImage?
public init(title: String, subtitle: String?, image: UIImage?) {
self.title = title
self.subtitle = subtitle
self.image = image
}
public init(title: String, subtitle: String?) {
self.title = title
self.subtitle = subtitle
}
public init(title: String) {
self.title = title
}
}
public typealias SearchTextFieldItemHandler = (_ filteredResults: [SearchTextFieldItem], _ index: Int) -> Void
////////////////////////////////////////////////////////////////////////
// Suggestions List Direction
enum Direction {
case down
case up
}