73 lines
3.1 KiB
Swift
73 lines
3.1 KiB
Swift
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//
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// UITextView+Emotion.swift
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// TUILiveKit
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//
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// Created by krabyu on 2024/4/3.
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//
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import UIKit
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extension UITextView {
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func insertEmotionAttributedString(emotionAttributedString: NSAttributedString) {
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guard let content = attributedText.mutableCopy() as? NSMutableAttributedString
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else {
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return
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}
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let location = selectedRange.location
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content.insert(emotionAttributedString, at: location)
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content.addAttributes([.font: font ?? UIFont.systemFont(ofSize: 14),
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.foregroundColor: textColor ?? .black,],
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range: NSRange(location: location, length: emotionAttributedString.length))
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attributedText = content
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let newRange = NSRange(location: location + emotionAttributedString.length, length: 0)
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selectedRange = newRange
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}
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func insertEmotionKey(emotionKey: String) {
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guard let content: NSMutableAttributedString = attributedText.copy() as? NSMutableAttributedString else { return }
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let location = selectedRange.location
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content.insert(NSAttributedString(string: emotionKey, attributes: [.font: font ?? UIFont.systemFont(ofSize: 14),
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.foregroundColor: textColor ?? .black,]), at: location)
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attributedText = content
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let newRange = NSRange(location: location + emotionKey.count, length: 0)
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selectedRange = newRange
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}
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func deleteEmotion() -> Bool {
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let location = selectedRange.location
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if location == 0 { return false }
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let headSubstring = text.prefix(location)
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if headSubstring.hasSuffix("]") {
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for i in stride(from: headSubstring.count, to: 0 - 1, by: -1) {
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let index = headSubstring.index(headSubstring.startIndex, offsetBy: i - 1)
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let tempString = headSubstring[index]
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if tempString == "[" {
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guard let content: NSMutableAttributedString = attributedText.copy() as? NSMutableAttributedString else { return false }
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content.deleteCharacters(in: NSRange(location: i - 1, length: headSubstring.count - (i - 1)))
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attributedText = content
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let newRange = NSRange(location: headSubstring.count, length: 0)
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selectedRange = newRange
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return true
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}
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}
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}
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return false
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}
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var normalText: String {
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guard let attributedText = attributedText else { return "" }
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var normalText = ""
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attributedText.enumerateAttributes(in: NSRange(location: 0, length: attributedText.length)) { attributes, range, _ in
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if let attachment = attributes[.attachment] as? EmotionAttachment {
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let emotionAttachment = attachment
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normalText += emotionAttachment.displayText
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} else {
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let substring = (attributedText.string as NSString).substring(with: range)
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normalText += substring
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}
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}
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return normalText
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}
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}
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