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Fix compilation for Swift 3 on Xcode 9

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This commit is contained in:
Chris Ballinger
2017-08-02 17:43:39 -07:00
parent 0e07125316
commit db18a0df61
1 changed files with 49 additions and 48 deletions
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97
ParkedTextField/ParkedTextField/ParkedTextField.swift
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@@ -9,9 +9,9 @@
import UIKit
open class ParkedTextField: UITextField {
// MARK: Properties
/// Constant part of the text. Defaults to "".
@IBInspectable open var parkedText: String {
get {
@@ -24,7 +24,7 @@ open class ParkedTextField: UITextField {
if !text.isEmpty {
let typed = text[text.startIndex..<text.characters.index(text.endIndex, offsetBy: -self.parkedText.characters.count)]
text = typed + newValue
prevText = text
_parkedText = newValue
@@ -32,13 +32,13 @@ open class ParkedTextField: UITextField {
} else {
_parkedText = newValue
}
// Force update placeholder to get the new value of parkedText
placeholder = placeholderText + parkedText
}
}
var _parkedText = ""
/// Variable part of the text. Defaults to "".
@IBInspectable open var typedText: String {
get {
@@ -56,29 +56,29 @@ open class ParkedTextField: UITextField {
textChanged(self)
}
}
/// Placeholder before parkedText. Defaults to "".
@IBInspectable open var placeholderText: String = "" {
didSet {
placeholder = placeholderText + parkedText
}
}
/// Constant part of the text. Defaults to the text field's font.
open var parkedTextFont: UIFont! {
didSet {
parkedText += ""
}
}
/// Constant part of the text. Defaults to the text field's textColor.
@IBInspectable open var parkedTextColor: UIColor! {
didSet {
parkedText += ""
}
}
/// Attributes wrapper for font and color of parkedText
var parkedTextAttributes: [String: NSObject] {
return [
@@ -86,7 +86,7 @@ open class ParkedTextField: UITextField {
NSForegroundColorAttributeName: parkedTextColor ?? textColor!
]
}
open override var placeholder: String? {
didSet {
if let placeholder = placeholder {
@@ -99,33 +99,33 @@ open class ParkedTextField: UITextField {
}
}
}
enum TypingState {
case start, typed
}
var typingState = TypingState.start
var beginningOfParkedText: UITextPosition? {
get {
return position(from: endOfDocument, offset: -parkedText.characters.count)
}
}
var prevText = ""
// MARK: Initialization
public required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commonInit()
}
public override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
}
func commonInit() {
if let boldFont = font {
@@ -133,20 +133,20 @@ open class ParkedTextField: UITextField {
} else {
parkedTextFont = font
}
parkedTextColor = textColor
addTarget(self, action: #selector(ParkedTextField.textChanged(_:)), for: .editingChanged)
text = ""
prevText = text!
typingState = .start
}
// MARK: EditingChanged handler
func textChanged(_ sender: UITextField) {
switch typingState {
case .start where text!.characters.count > 0:
@@ -154,63 +154,64 @@ open class ParkedTextField: UITextField {
updateAttributedTextWith(text!)
prevText = text!
goToBeginningOfParkedText()
typingState = .typed
case .typed:
if text == parkedText {
typingState = .start
text = ""
return
}
// If the parkedText has changed, don't update prevText.
if text!.hasSuffix(parkedText) {
prevText = text!
}
updateAttributedTextWith(prevText)
goToBeginningOfParkedText()
default:
break
}
}
// MARK: Utilites
func updateAttributedTextWith(_ text: String) {
if let parkedTextRange = text.range(of: parkedText, options: NSString.CompareOptions.backwards, range: nil, locale: nil) {
let nsRange = NSRangeFromRange(text, range: parkedTextRange)
let nsRange = text.nsRange(from: parkedTextRange)
let attributedString = NSMutableAttributedString(string: text)
attributedString.addAttributes(parkedTextAttributes, range: nsRange)
attributedText = attributedString
}
}
/// http://stackoverflow.com/questions/25138339/nsrange-to-rangestring-index
func NSRangeFromRange(_ text:String, range : Range<String.Index>) -> NSRange {
let utf16view = text.utf16
let from = String.UTF16View.Index(range.lowerBound, within: utf16view)
let to = String.UTF16View.Index(range.upperBound, within: utf16view)
let loc = utf16view.startIndex.distance(to: from)
let len = from.distance(to: to)
return NSMakeRange(loc, len)
}
func goToBeginningOfParkedText() {
if let position = beginningOfParkedText {
goToTextPosition(position)
}
}
func goToTextPosition(_ textPosition: UITextPosition!) {
selectedTextRange = textRange(from: textPosition, to: textPosition)
}
func bold(_ font: UIFont) -> UIFont {
let descriptor = font.fontDescriptor.withSymbolicTraits(UIFontDescriptorSymbolicTraits.traitBold)
return UIFont(descriptor: descriptor!, size: 0)
}
}
// https://stackoverflow.com/a/30404532/805882
fileprivate extension String {
func nsRange(from range: Range<String.Index>) -> NSRange {
let from = range.lowerBound.samePosition(in: utf16)
let to = range.upperBound.samePosition(in: utf16)
return NSRange(location: utf16.distance(from: utf16.startIndex, to: from),
length: utf16.distance(from: from, to: to))
}
}