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chat: fix blanking and gaps when switching geohashes; channel-aware row IDs + deferred autoscroll\n\n- Add channel-aware UI IDs (mesh|id, geo:<gh>|id, dm:<peer>|id) to prevent SwiftUI reuse gaps\n- Defer scrollTo to next runloop for stability; auto-scroll on appear/switch\n- Collapse very long messages with Show more/less; skip heavy parsing for huge content\n- Simplify LazyLinkPreviewView (remove GeometryReader in list) (#480)

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Co-authored-by: jack <jackjackbits@users.noreply.github.com>
This commit is contained in:
jack
2025-08-22 16:38:40 +02:00
committed by GitHub
co-authored by jack
parent 60a42ffecb
commit 7f2cbd6621
3 changed files with 178 additions and 21 deletions
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bitchat/ViewModels/ChatViewModel.swift
+19 -9
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@@ -2776,15 +2776,24 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
// Process content with hashtags and mentions
let content = message.content
let hashtagPattern = "#([a-zA-Z0-9_]+)"
// Allow optional '#abcd' suffix in mentions
let mentionPattern = "@([\\p{L}0-9_]+(?:#[a-fA-F0-9]{4})?)"
let hashtagRegex = try? NSRegularExpression(pattern: hashtagPattern, options: [])
let mentionRegex = try? NSRegularExpression(pattern: mentionPattern, options: [])
// Use NSDataDetector for URL detection
let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
// For extremely long content, render as plain text to avoid heavy regex/layout work
if content.count > 4000 || content.hasVeryLongToken(threshold: 1024) {
var plainStyle = AttributeContainer()
plainStyle.foregroundColor = baseColor
plainStyle.font = isSelf
? .system(size: 14, weight: .bold, design: .monospaced)
: .system(size: 14, design: .monospaced)
result.append(AttributedString(content).mergingAttributes(plainStyle))
} else {
let hashtagPattern = "#([a-zA-Z0-9_]+)"
// Allow optional '#abcd' suffix in mentions
let mentionPattern = "@([\\p{L}0-9_]+(?:#[a-fA-F0-9]{4})?)"
let hashtagRegex = try? NSRegularExpression(pattern: hashtagPattern, options: [])
let mentionRegex = try? NSRegularExpression(pattern: mentionPattern, options: [])
// Use NSDataDetector for URL detection
let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
let hashtagMatches = hashtagRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
let mentionMatches = mentionRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
@@ -2903,6 +2912,7 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
}
result.append(AttributedString(remainingText).mergingAttributes(remainingStyle))
}
}
// Add timestamp at the end (smaller, light grey)
let timestamp = AttributedString(" [\(formatTimestamp(message.timestamp))]")