51 lines
1.5 KiB
Swift
51 lines
1.5 KiB
Swift
//
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// MultiSourceEmojiLabel.swift
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// Tusker
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//
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// Created by Shadowfacts on 10/18/20.
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// Copyright © 2020 Shadowfacts. All rights reserved.
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//
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import UIKit
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import Pachyderm
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private let emojiRegex = try! NSRegularExpression(pattern: ":(\\w+):", options: [])
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class MultiSourceEmojiLabel: UILabel, BaseEmojiLabel {
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var emojiIdentifier: String?
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var emojiRequests = [ImageCache.Request]()
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var emojiFont: UIFont { font }
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var emojiTextColor: UIColor { textColor }
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var combiner: (([NSAttributedString]) -> NSAttributedString)?
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func setEmojis(pairs: [(String, [Emoji])], identifier: String) {
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guard pairs.count > 0 else { return }
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self.emojiIdentifier = identifier
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emojiRequests.forEach { $0.cancel() }
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emojiRequests = []
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var attributedStrings = pairs.map { NSAttributedString(string: $0.0) }
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func recombine() {
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if let combiner = self.combiner {
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self.attributedText = combiner(attributedStrings)
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}
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}
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recombine()
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for (index, (string, emojis)) in pairs.enumerated() {
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self.replaceEmojis(in: string, emojis: emojis, identifier: identifier) { (attributedString, _) in
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attributedStrings[index] = attributedString
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DispatchQueue.main.async { [weak self] in
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guard let self = self, self.emojiIdentifier == identifier else { return }
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recombine()
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}
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}
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}
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}
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}
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