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Make ActiveLabel as AccessibleElement by default. #424

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Make ActiveLabel as AccessibleElement by default. #424

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69 changes: 52 additions & 17 deletions ActiveLabel/ActiveLabel.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@
import Foundation
import UIKit

public protocol ActiveLabelDelegate: class {
public protocol ActiveLabelDelegate: AnyObject {
func didSelect(_ text: String, type: ActiveType)
}

Expand All @@ -23,6 +23,8 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy

open var enabledTypes: [ActiveType] = [.mention, .hashtag, .url]

open var accessibleType: ActiveType?

open var urlMaximumLength: Int?

open var configureLinkAttribute: ConfigureLinkAttribute?
Expand Down Expand Up @@ -64,6 +66,10 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy
didSet { updateTextStorage(parseText: false) }
}

public var isAccessibilityEnabled: Bool = true {
didSet { updateAccessibility(isEnabled: isAccessibilityEnabled) }
}

// MARK: - Computed Properties
private var hightlightFont: UIFont? {
guard let highlightFontName = highlightFontName, let highlightFontSize = highlightFontSize else { return nil }
Expand Down Expand Up @@ -145,6 +151,11 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy
didSet { textContainer.lineBreakMode = lineBreakMode }
}

open override func accessibilityActivate() -> Bool {
setAccessibilityElement()
return isAccessibilityEnabled
}

// MARK: - init functions
override public init(frame: CGRect) {
super.init(frame: frame)
Expand Down Expand Up @@ -215,22 +226,7 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy
selectedElement = nil
}
case .ended, .regionExited:
guard let selectedElement = selectedElement else { return avoidSuperCall }

switch selectedElement.element {
case .mention(let userHandle): didTapMention(userHandle)
case .hashtag(let hashtag): didTapHashtag(hashtag)
case .url(let originalURL, _): didTapStringURL(originalURL)
case .custom(let element): didTap(element, for: selectedElement.type)
case .email(let element): didTapStringEmail(element)
}

let when = DispatchTime.now() + Double(Int64(0.25 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC)
DispatchQueue.main.asyncAfter(deadline: when) {
self.updateAttributesWhenSelected(false)
self.selectedElement = nil
}
avoidSuperCall = true
avoidSuperCall = setSelectedElement(avoidSuperCall: avoidSuperCall)
case .cancelled:
updateAttributesWhenSelected(false)
selectedElement = nil
Expand All @@ -243,6 +239,38 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy
return avoidSuperCall
}

@discardableResult
private func setSelectedElement(avoidSuperCall: Bool) -> Bool {
guard let selectedElement = selectedElement else { return avoidSuperCall }

switch selectedElement.element {
case .mention(let userHandle): didTapMention(userHandle)
case .hashtag(let hashtag): didTapHashtag(hashtag)
case .url(let originalURL, _): didTapStringURL(originalURL)
case .custom(let element): didTap(element, for: selectedElement.type)
case .email(let element): didTapStringEmail(element)
}

let when = DispatchTime.now() + Double(Int64(0.25 * Double(NSEC_PER_SEC))) / Double(NSEC_PER_SEC)
DispatchQueue.main.asyncAfter(deadline: when) {
self.updateAttributesWhenSelected(false)
self.selectedElement = nil
}

return true
}

private func setAccessibilityElement() {
guard isAccessibilityEnabled else { return }

if let accessibleType = accessibleType {
selectedElement = ElementTuple(range: NSRange(location: 0, length: 0), element: ActiveElement.create(with: accessibleType, text: ""), type: accessibleType)
} else {
selectedElement = activeElements.values.filter{ $0.count>0 }.flatMap{ $0 }.first
}
setSelectedElement(avoidSuperCall: true)
}

// MARK: - private properties
fileprivate var _customizing: Bool = true
fileprivate var defaultCustomColor: UIColor = .black
Expand Down Expand Up @@ -300,6 +328,13 @@ typealias ElementTuple = (range: NSRange, element: ActiveElement, type: ActiveTy
setNeedsDisplay()
}

fileprivate func updateAccessibility(isEnabled: Bool) {
if isEnabled {
isAccessibilityElement = isEnabled
accessibilityTraits = UIAccessibilityTraits.button
}
}

fileprivate func clearActiveElements() {
selectedElement = nil
for (type, _) in activeElements {
Expand Down