Files
buzz/mobile/lib/features/channels/message_content.dart
klopez4212 5fefec604f fix(mobile): restore channel icons and align chat colors with desktop (#8478)
## Summary
- Restores `#` and lock icons for public and private channels on Home,
with matching loading placeholders.
- Updates the dark-mode navigation colors to the desktop design-system
tokens (read and unread text, section headings).
- Replaces the chat color picker with the seven desktop accents (Gray,
Chartreuse, Flame, Magenta, Iris, Cobalt, Jade). Saved legacy colors map
to the closest one.
- Uses white text in your own bubbles, and black where white falls below
4.5:1 (Chartreuse, dark-mode Gray). Links (underlined), quotes, tables
and code use the same text color.
- Insets code blocks in bubbles evenly, with corners concentric to the
bubble and even inner padding.
- The swipe-to-reply indicator uses the chosen chat color.

## Testing
- `flutter analyze` and `dart format` are clean. The full mobile suite
passes (3,705 tests).
- Installed and checked on a Pixel 10 and an iPhone Air against a real
community.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Signed-off-by: kenny lopez <klopez4212@gmail.com>
Co-authored-by: Terp <5856f6900e8e0a4e0ea1f4f8d2ee33e4753d2119bc122f94ecafc660b46c0511@buzz.block.builderlab.xyz>
Co-authored-by: Queue <874bf2d815c2c4b459b90438c669c57f2702f3a76bb6e16fa97184259aac3e9e@buzz.block.builderlab.xyz>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-20 13:48:12 -04:00

1098 lines
38 KiB
Dart

import 'dart:async';
import '../../shared/widgets/ios_media_carousel.dart';
import '../../shared/widgets/message_attachment_corners.dart';
import 'dart:io';
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:gpt_markdown/gpt_markdown.dart';
import 'package:buzz/shared/theme/buzz_icons.dart';
import 'package:open_filex/open_filex.dart';
import 'package:path_provider/path_provider.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:video_player/video_player.dart';
import '../../shared/clipboard_utils.dart';
import '../../shared/widgets/media_loading_placeholder.dart';
import '../../shared/mentions/mention_bindings.dart';
import '../../shared/mentions/mention_tags.dart';
import '../../shared/deeplink/deep_link.dart';
import '../../shared/deeplink/pending_deep_link_provider.dart';
import '../../shared/relay/relay.dart';
import '../../shared/syntax_highlight.dart';
import '../../shared/theme/theme.dart';
import '../../shared/custom_emoji/custom_emoji.dart';
import '../../shared/custom_emoji/custom_emoji_provider.dart';
import '../../shared/custom_emoji/custom_emoji_render.dart';
import '../../shared/emoji/emoji_data_provider.dart';
import '../../shared/emoji/emoji_only.dart';
import 'channel_ids_by_name_provider.dart';
import 'local_send_bubble_surface.dart';
import 'media_viewer_page.dart';
import 'message_content/link_normalizer.dart';
import 'message_media.dart';
import 'message_content/bubble_segments.dart';
import 'message_mention_pill.dart';
import 'message_gallery.dart';
import 'message_gallery_frame.dart';
import 'message_media_avatar.dart';
import 'message_media_geometry.dart';
import 'voice_note_attachment.dart';
part 'message_content/media_carousel.dart';
part 'message_content/bubble_shape.dart';
part 'message_content/inline_components.dart';
part 'message_content/token_pill.dart';
part 'message_content/video_preview.dart';
typedef OpenDownloadedFile =
Future<void> Function(
String url,
Map<String, String> headers,
String filename,
);
final openDownloadedFileProvider = Provider<OpenDownloadedFile>((ref) {
final client = ref.watch(mediaHttpClientProvider);
return (url, headers, filename) async {
final response = await client.get(Uri.parse(url), headers: headers);
if (response.statusCode < 200 || response.statusCode >= 300) {
throw HttpException(
'Attachment download failed (${response.statusCode})',
uri: Uri.parse(url),
);
}
final directory = await getTemporaryDirectory();
final safeName = _safeDownloadedFilename(filename);
final file = File(
'${directory.path}${Platform.pathSeparator}'
'${DateTime.now().microsecondsSinceEpoch}-$safeName',
);
await file.writeAsBytes(response.bodyBytes, flush: true);
final result = await OpenFilex.open(file.path);
if (result.type != ResultType.done) {
throw FileSystemException(result.message, file.path);
}
};
});
String _safeDownloadedFilename(String filename) {
final safe = filename
.split(RegExp(r'[/\\]'))
.last
.replaceAll(RegExp(r'[\x00-\x1F\x7F]'), '')
.trim();
return safe.isEmpty ? 'attachment' : safe;
}
/// Renders message content with markdown formatting, @mentions, #channel links,
/// and media-aware markdown images/videos.
class MessageContent extends HookConsumerWidget {
final String content;
/// Paint conversation text bubbles while keeping attachments on the page.
final bool bubble;
/// Distinguishes messages authored by the signed-in identity.
final bool ownMessage;
/// Lets an adjacent day divider own spacing after the final text segment.
final bool trimTrailingSpacing;
/// Marks the final message in a sender run for rounded corners and dots.
final bool bubbleEnd;
/// Marks the first message in a sender run for rounded top corners.
final bool bubbleStart;
/// Reserves room above overlapping reactions.
final bool hasReactions;
/// Display names for mentioned pubkeys, extracted from event p-tags.
/// Keys are lowercase pubkeys, values are display names.
final Map<String, String> mentionNames;
/// Contextual display labels for mentioned pubkeys (lowercase keys).
///
/// Presentation only: text still binds through [mentionNames], so a
/// disambiguated label never changes which signed text names whom.
final Map<String, String> mentionLabels;
/// Mentioned pubkeys that resolve to agents. Agent chips use the desktop
/// robot treatment instead of an `@` prefix.
final Set<String> agentMentionPubkeys;
/// Known channel names for #channel links. Keys are lowercase channel
/// names, values are channel IDs.
final Map<String, String> channelNames;
/// Raw event tags, used for `imeta` media metadata lookups.
final List<List<String>> tags;
/// Called when a #channel link is tapped.
final void Function(String channelId)? onChannelTap;
/// Called when an @mention of a known user is tapped, with the
/// mentioned user's pubkey.
final void Function(String pubkey)? onMentionTap;
/// Opens the message's thread from the full-screen image viewer.
final VoidCallback? onMediaReply;
/// Opens message-specific actions for an image in the full-screen viewer.
final MediaViewerMoreAction? onMediaMore;
final TextStyle? baseStyle;
/// Alignment applied to rendered markdown text.
final TextAlign? textAlign;
final int? maxLines;
/// Render a body that is nothing but emoji at [kEmojiOnlyFontSize], the way
/// desktop's `MessageRow` does. Off by default: previews, search hits, and
/// notification rows want a message to occupy its usual line height whatever
/// it contains.
final bool scaleEmojiOnly;
/// Allows a multi-image carousel to reclaim leading space reserved by the
/// surrounding message layout, while keeping its image count aligned with
/// the message body.
final double mediaCarouselLeadingOverflow;
/// Allows a multi-image carousel to continue through the trailing page
/// gutter while keeping its first image and count aligned with the body.
final double mediaCarouselTrailingOverflow;
const MessageContent({
super.key,
required this.content,
this.bubble = false,
this.ownMessage = false,
this.trimTrailingSpacing = false,
this.bubbleEnd = true,
this.bubbleStart = true,
this.hasReactions = false,
this.mentionNames = const {},
this.mentionLabels = const {},
this.agentMentionPubkeys = const {},
this.channelNames = const {},
this.tags = const [],
this.onChannelTap,
this.onMentionTap,
this.onMediaReply,
this.onMediaMore,
this.baseStyle,
this.textAlign,
this.maxLines,
this.scaleEmojiOnly = false,
this.mediaCarouselLeadingOverflow = 0,
this.mediaCarouselTrailingOverflow = 0,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final markdownTheme = GptMarkdownTheme.of(context);
final chatColors = ChatColors.of(context);
final ownTextColor = chatColors.foreground;
// Own-bubble links share the bubble ink; markdown marks them by underline.
final linkColor = ownMessage ? ownTextColor : context.colors.tertiary;
final bubbleInk = ownMessage ? ownTextColor : context.colors.onSurface;
final baseTextStyle =
(baseStyle ??
context.textTheme.bodyMedium?.copyWith(
color: context.colors.onSurface,
))
?.copyWith(color: bubble && ownMessage ? ownTextColor : null);
final resolvedMentionNames = mentionNames;
final signedMentionPubkeys = mentionedPubkeysFromTags(tags);
final mentionBindings = renderedMentionBindings(
content,
mentionNames,
signedMentionPubkeys,
);
final resolvedAgentMentionPubkeys = {
...agentMentionPubkeys.map((pubkey) => pubkey.toLowerCase()),
};
final resolvedChannelNames = channelNames.isNotEmpty
? channelNames
: ref.watch(channelIdsByNameProvider);
final channelHandler = useRef(onChannelTap)..value = onChannelTap;
final resolvedChannelTap = useMemoized(
() => (String channelId) {
final handler = channelHandler.value;
if (handler != null) {
handler(channelId);
} else {
ref
.read(pendingDeepLinkProvider.notifier)
.open(Uri(scheme: 'buzz', host: 'channel', path: channelId));
}
},
const [],
);
final replyHandler = useRef(onMediaReply)..value = onMediaReply;
final moreHandler = useRef(onMediaMore)..value = onMediaMore;
final mediaReply = useMemoized(
() =>
() => replyHandler.value?.call(),
const [],
);
final mediaMore = useMemoized(
() =>
(BuildContext context, String url) =>
moreHandler.value?.call(context, url),
const [],
);
final channelPresentationKey = [
for (final entry
in (resolvedChannelNames.entries.toList()
..sort((a, b) => a.key.compareTo(b.key))))
'${entry.key}\u0000${entry.value}',
].join('\u0001');
final imetaByUrl = {
for (final entry in parseImetaTags(tags).entries)
normalizeMarkdownDestination(entry.key): entry.value,
};
final normalizedContent = useMemoized(() => normalizeBareLinks(content), [
content,
]);
final trailingGallery = maxLines == null
? extractTrailingImageGallery(normalizedContent, imetaByUrl)
: null;
final markdownContent = trailingGallery?.content ?? normalizedContent;
final customEmoji = _mergeCustomEmoji(
customEmojiFromTags(tags),
ref.watch(customEmojiListProvider),
);
final mentionPresentationKey = [
for (final entry
in (resolvedMentionNames.entries.toList()
..sort((a, b) => a.key.compareTo(b.key))))
'${entry.key}\u0000${entry.value}',
...(resolvedAgentMentionPubkeys.toList()..sort()),
...(signedMentionPubkeys.toList()..sort()),
].join('\u0001');
// Decided here rather than by the caller: this is where the event's own
// emoji tags and the community palette have already been merged, and a
// `:shortcode:` only counts as emoji if it resolves against that palette.
final emojiOnly =
scaleEmojiOnly &&
isEmojiOnlyMessage(
markdownContent,
nativeEmoji: ref.watch(nativeEmojiGlyphsProvider),
customEmoji: customEmoji,
);
final style = emojiOnly
? baseTextStyle?.copyWith(
fontSize: kEmojiOnlyFontSize,
height: kEmojiOnlyHeight,
)
: baseTextStyle;
final inlineCustomEmojiSize = emojiOnly
? kEmojiOnlyCustomEmojiSize
: kCustomEmojiInlineSize;
final finalContent = useMemoized(() {
// Replace spaces with non-breaking spaces inside known mention names
// so the gpt_markdown combined regex can match multi-word names
// even when caseSensitive is not preserved.
// Skip content inside backticks to avoid altering inline code.
final mentionParts = markdownContent.split('`');
final mentionBuf = StringBuffer();
for (var i = 0; i < mentionParts.length; i++) {
if (i.isOdd) {
mentionBuf.write('`${mentionParts[i]}`');
} else {
var segment = mentionParts[i];
for (final range in mentionOccurrences(
segment,
mentionBindings.keys,
).reversed) {
segment = segment.replaceRange(
range.start,
range.end,
'@${_markdownMentionName(range.label)}',
);
}
mentionBuf.write(segment);
}
}
var result = mentionBuf.toString();
// Ensure channel links at the very start of content don't get
// swallowed by markdown processing.
if (RegExp(r'^#[A-Za-z0-9_]').hasMatch(result)) {
result = '\u200B$result';
}
return result;
}, [markdownContent, mentionPresentationKey]);
final inlineComponents = _useMessageInlineComponents(
content: content,
finalContent: finalContent,
mentionNames: resolvedMentionNames,
mentionLabels: mentionLabels,
bindings: mentionBindings,
agentPubkeys: resolvedAgentMentionPubkeys,
channelNames: resolvedChannelNames,
customEmoji: customEmoji,
emojiSize: inlineCustomEmojiSize,
tags: tags,
hasMediaReply: onMediaReply != null,
hasMediaMore: onMediaMore != null,
onMentionTap: onMentionTap,
onChannelTap: resolvedChannelTap,
);
Widget renderMarkdown(String text) => KeyedSubtree(
key: ValueKey(
'$text\u0000$mentionPresentationKey\u0000$channelPresentationKey',
),
child: GptMarkdown(
text,
style: style,
styleSheet: bubble
? GptMarkdownStyleSheet(
blockQuote: BlockQuoteStyle(barColor: bubbleInk),
hr: HrStyle(color: bubbleInk.withValues(alpha: 0.3)),
table: TableStyle(
borderColor: bubbleInk.withValues(alpha: 0.3),
headerBackground: Colors.transparent,
headerTextStyle: TextStyle(color: bubbleInk),
),
)
: null,
followLinkColor: false,
// normalizeBareLinks() already turns bare URLs into Markdown links;
// gpt_markdown 1.2.0 autolinks by default, so both would run.
autolink: false,
codeBuilder: (context, name, code, closed) => _MessageCodeBlock(
name: name,
code: code,
bubble: bubble,
ink: bubble && ownMessage ? ownTextColor : null,
),
linkBuilder: (context, linkText, url, linkStyle) => _buildLink(
context,
ref,
linkText,
url,
imetaByUrl[url],
linkStyle,
style,
resolvedChannelTap,
resolvedChannelNames,
),
imageBuilder: (context, imageUrl, _, _) => _buildMedia(
context,
imageUrl,
imetaByUrl[imageUrl],
onReply: onMediaReply == null ? null : mediaReply,
onMore: onMediaMore == null ? null : mediaMore,
),
textAlign: textAlign,
maxLines: maxLines,
inlineComponents: inlineComponents,
),
);
final segments = bubble
? messageBubbleSegments(finalContent, imetaByUrl)
: const <({String text, bool attachment})>[];
final markdown = bubble
? Column(
crossAxisAlignment: ownMessage
? CrossAxisAlignment.end
: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
for (final (index, segment) in segments.indexed)
if (segment.attachment)
MessageAttachmentCorners(
borderRadius: _attachmentCorners(
start: bubbleStart && index == 0,
end:
bubbleEnd &&
trailingGallery == null &&
index == segments.length - 1,
),
child: renderMarkdown(segment.text),
)
else
Padding(
key: ValueKey('message-text-bubble-$index'),
padding: EdgeInsets.only(
bottom:
trimTrailingSpacing &&
trailingGallery == null &&
index == segments.length - 1
? 0
: Grid.quarter,
),
child: LocalSendBubbleSurface(
color: ownMessage
? chatColors.outgoing
: receivedMessageSurface(context.colors.brightness),
shape: const _MessageBubbleShape(),
child: Padding(
padding: EdgeInsets.fromLTRB(
Grid.xs,
Grid.xxs,
Grid.xs,
hasReactions && index == segments.length - 1
? Grid.xs
: Grid.xxs,
),
child: Theme(
data: Theme.of(context).copyWith(
colorScheme: context.colors.copyWith(
primary: linkColor,
),
),
child: GptMarkdownTheme(
gptThemeData: markdownTheme.copyWith(
linkColor: linkColor,
// A neutral chip would put white ink on a light
// fill; tint the accent instead.
inlineCode: ownMessage
? markdownTheme.inlineCode.copyWith(
color: ownTextColor,
backgroundColor: chatCodeTint(
ownTextColor,
0.18,
),
borderColor: ownTextColor.withValues(
alpha: 0.3,
),
)
: null,
h1: markdownTheme.h1?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
h2: markdownTheme.h2?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
h3: markdownTheme.h3?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
h4: markdownTheme.h4?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
h5: markdownTheme.h5?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
h6: markdownTheme.h6?.copyWith(
color: ownMessage
? ownTextColor
: context.colors.onSurface,
),
),
child: renderMarkdown(segment.text),
),
),
),
),
),
],
)
: renderMarkdown(finalContent);
if (trailingGallery == null) return markdown;
return Column(
crossAxisAlignment: ownMessage
? CrossAxisAlignment.end
: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
if (trailingGallery.content.trim().isNotEmpty) markdown,
MessageAttachmentCorners(
borderRadius: _attachmentCorners(
start: bubbleStart && trailingGallery.content.trim().isEmpty,
end: bubbleEnd,
),
child: _MessageImageCarousel(
key: ValueKey(
trailingGallery.items.map((item) => item.url).join('\u0000'),
),
items: trailingGallery.items,
mirrored: ownMessage,
leadingOverflow: mediaCarouselLeadingOverflow,
trailingOverflow: mediaCarouselTrailingOverflow,
onReply: onMediaReply,
onMore: onMediaMore,
),
),
],
);
}
Widget _buildMedia(
BuildContext context,
String imageUrl,
ImetaEntry? imeta, {
VoidCallback? onReply,
MediaViewerMoreAction? onMore,
}) {
final mediaKind = classifyMediaUrl(imageUrl, imeta: imeta);
if (mediaKind == MessageMediaKind.audio) {
return Padding(
padding: const EdgeInsets.only(top: Grid.half),
child: VoiceNoteAttachment.remote(
url: imageUrl,
duration: Duration(
milliseconds: ((imeta?.duration ?? 0) * 1000).round(),
),
),
);
}
if (mediaKind == MessageMediaKind.video) {
return _MessageVideoPreview(
url: imageUrl,
imeta: imeta,
onReply: onReply,
);
}
return _MessageImagePreview(
url: imageUrl,
imeta: imeta,
semanticLabel: imeta?.alt ?? 'Message image',
onReply: onReply,
onMore: onMore,
);
}
Widget _buildLink(
BuildContext context,
WidgetRef ref,
InlineSpan linkText,
String url,
ImetaEntry? imeta,
TextStyle linkStyle,
TextStyle? fallbackStyle,
void Function(String channelId) resolvedChannelTap,
Map<String, String> resolvedChannelNames,
) {
String text = '';
linkText.visitChildren((span) {
if (span is TextSpan && span.text != null) {
text += span.text!;
}
return true;
});
final baseStyle = fallbackStyle ?? linkStyle;
if (imeta != null &&
classifyMediaUrl(url, imeta: imeta) == MessageMediaKind.audio) {
return _buildMedia(context, url, imeta);
}
final uri = Uri.tryParse(url);
final buzzLink = uri?.scheme == 'buzz'
? parseBuzzDeepLink(uri!) ?? parseEntityDeepLink(uri)
: null;
final isBuzzLink =
buzzLink is ChannelDeepLink ||
buzzLink is MessageDeepLink ||
buzzLink is EntityDeepLink;
final isCanonicalBuzzLabel = isBuzzLink && text == url;
final buzzPresentation = switch (buzzLink) {
ChannelDeepLink(:final channelId) => (
icon: BuzzIcons.hash,
label:
_channelNameForId(resolvedChannelNames, channelId) ??
channelId.substring(0, math.min(8, channelId.length)),
semanticLabel:
'Open channel ${_channelNameForId(resolvedChannelNames, channelId) ?? channelId.substring(0, math.min(8, channelId.length))}',
interactive: true,
),
MessageDeepLink(:final channelId, :final messageId) => (
icon: BuzzIcons.messageSquare,
label:
'${_channelNameForId(resolvedChannelNames, channelId) ?? channelId.substring(0, math.min(8, channelId.length))} · ${messageId.substring(0, math.min(8, messageId.length))}',
semanticLabel:
'Open message ${messageId.substring(0, math.min(8, messageId.length))} in channel ${_channelNameForId(resolvedChannelNames, channelId) ?? channelId.substring(0, math.min(8, channelId.length))}',
interactive: true,
),
EntityDeepLink(:final type, :final repository, :final eventId) => (
icon: switch (type) {
'repo' => BuzzIcons.folderGit2,
'pr' => BuzzIcons.gitPullRequest,
_ => BuzzIcons.circleDot,
},
label: type == 'repo'
? repository
: '$repository · ${eventId!.substring(0, 8)}',
semanticLabel: switch (type) {
'repo' => 'Repository $repository',
'pr' =>
'Pull request ${eventId!.substring(0, 8)} in repository $repository',
_ => 'Issue ${eventId!.substring(0, 8)} in repository $repository',
},
interactive: false,
),
_ => null,
};
final authoredLinkStyle = baseStyle.copyWith(
color: context.colors.primary,
decoration: TextDecoration.underline,
decorationColor: context.colors.primary,
);
final linkTextWidget = isCanonicalBuzzLabel
? Text(
text,
style: baseStyle.copyWith(
color: context.colors.primary,
fontWeight: FontWeight.w600,
),
)
: Text.rich(TextSpan(style: authoredLinkStyle, children: [linkText]));
final renderedLink = isCanonicalBuzzLabel && buzzPresentation != null
? _TokenPill(
key: ValueKey('buzz-link-chip:$url'),
icon: buzzPresentation.icon,
interactive: buzzPresentation.interactive,
semanticLabel: buzzPresentation.semanticLabel,
text: buzzPresentation.label,
textStyle: baseStyle.copyWith(fontWeight: FontWeight.w600),
)
: linkTextWidget;
// Mobile has no repo/PR/issue destination yet. Keep these presentation-only
// instead of exposing a control whose tap cannot do anything.
if (buzzLink is EntityDeepLink) {
return IgnorePointer(child: renderedLink);
}
return GestureDetector(
onTap: () async {
final uri = Uri.tryParse(url);
if (uri == null) return;
// Rendered channel URLs must use the same callback as `#channel`
// references so detail-page callers can suppress self-navigation.
// Message and join links still need the top-level authenticated
// dispatcher.
if (uri.scheme == 'buzz') {
final deepLink = parseBuzzDeepLink(uri);
if (deepLink case ChannelDeepLink(:final channelId)) {
resolvedChannelTap(channelId);
} else if (deepLink is MessageDeepLink ||
deepLink is InviteDeepLink) {
ref.read(pendingDeepLinkProvider.notifier).open(uri);
}
return;
}
if (uri.scheme != 'http' && uri.scheme != 'https') return;
final auth = ref.read(mediaGetAuthServiceProvider);
if (!auth.isRelayMediaUrl(url)) {
await launchUrl(uri, mode: LaunchMode.externalApplication);
return;
}
try {
await ref.read(openDownloadedFileProvider)(
url,
auth.headersFor(url),
text,
);
} catch (_) {
if (!context.mounted) return;
ScaffoldMessenger.maybeOf(context)?.showSnackBar(
const SnackBar(content: Text('Could not open attachment')),
);
}
},
child: renderedLink,
);
}
}
List<CustomEmoji> _mergeCustomEmoji(
List<CustomEmoji> eventEmoji,
List<CustomEmoji> paletteEmoji,
) {
if (eventEmoji.isEmpty) return paletteEmoji;
if (paletteEmoji.isEmpty) return eventEmoji;
final seen = <String>{};
final merged = <CustomEmoji>[];
for (final emoji in [...eventEmoji, ...paletteEmoji]) {
if (seen.add(emoji.shortcode)) merged.add(emoji);
}
return merged;
}
class _MessageImagePreview extends HookConsumerWidget {
final String url;
final ImetaEntry? imeta;
final String semanticLabel;
final VoidCallback? onReply;
final MediaViewerMoreAction? onMore;
const _MessageImagePreview({
required this.url,
required this.imeta,
required this.semanticLabel,
required this.onReply,
required this.onMore,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final heroTag = useMemoized(() => Object());
final layout = _resolveImagePreviewLayout(context, imeta?.aspectRatio);
final previewDecodeWidth = layout.width ?? messageMediaMaxWidth(context);
return Padding(
padding: const EdgeInsets.only(top: Grid.half),
child: GestureDetector(
onTap: () => openImageViewer(
context,
imageUrl: url,
heroTag: heroTag,
semanticLabel: semanticLabel,
previewDecodeWidth: previewDecodeWidth,
aspectRatio: imeta?.aspectRatio,
onReply: onReply,
onMore: onMore,
),
child: _MessageMediaPreviewFrame(
previewKey: ValueKey('message-media-image-preview:$url'),
backgroundColor: context.colors.surfaceContainerHighest,
width: layout.width,
height: layout.height,
child: MediaViewerHero(
tag: heroTag,
child: ClipRRect(
borderRadius:
MessageAttachmentCorners.of(context) ??
BorderRadius.circular(Radii.md),
child: MediaImage(
url: url,
decodeWidth: previewDecodeWidth,
fit: layout.fit,
semanticLabel: semanticLabel,
frameBuilder: (context, child, frame, synchronous) =>
frame != null || synchronous
? child
: const MediaLoadingPlaceholder(label: 'Loading image'),
errorBuilder: (_, _, _) => _MediaPreviewFallback(
icon: BuzzIcons.imageOff,
label: 'Image unavailable',
),
),
),
),
),
),
);
}
}
class _MessageMediaPreviewFrame extends StatelessWidget {
final Key previewKey;
final Color backgroundColor;
final double? width;
final double? height;
final Widget child;
const _MessageMediaPreviewFrame({
required this.previewKey,
required this.backgroundColor,
this.width,
this.height,
required this.child,
});
@override
Widget build(BuildContext context) {
final resolvedWidth = width ?? messageMediaMaxWidth(context);
return Container(
key: previewKey,
width: resolvedWidth,
height: height,
clipBehavior: Clip.antiAlias,
decoration: BoxDecoration(
color: backgroundColor,
borderRadius:
MessageAttachmentCorners.of(context) ??
BorderRadius.circular(Radii.md),
border: Border.all(color: context.colors.outlineVariant),
),
child: child,
);
}
}
_ImagePreviewLayout _resolveImagePreviewLayout(
BuildContext context,
double? aspectRatio,
) {
final previewSize = messageImagePreviewSize(context, aspectRatio);
return _ImagePreviewLayout(
width: previewSize.width,
height: previewSize.height,
fit: aspectRatio == null ? BoxFit.contain : BoxFit.cover,
);
}
class _ImagePreviewLayout {
final double? width;
final double? height;
final BoxFit fit;
const _ImagePreviewLayout({this.width, this.height, required this.fit});
}
class _MediaPreviewFallback extends StatelessWidget {
final IconData icon;
final String label;
const _MediaPreviewFallback({required this.icon, required this.label});
@override
Widget build(BuildContext context) {
return ColoredBox(
color: context.colors.surfaceContainerHighest,
child: Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, color: context.colors.onSurfaceVariant),
const SizedBox(height: Grid.quarter),
Text(
label,
style: context.textTheme.labelSmall?.copyWith(
color: context.colors.onSurfaceVariant,
),
textAlign: TextAlign.center,
),
],
),
),
);
}
}
class _MessageCodeBlock extends HookWidget {
final String name;
final String code;
/// Whether the block sits inside a message bubble.
final bool bubble;
/// Text color on an accent bubble; null keeps the neutral highlighted card.
final Color? ink;
const _MessageCodeBlock({
required this.name,
required this.code,
this.bubble = false,
this.ink,
});
@override
Widget build(BuildContext context) {
final isCopied = useState(false);
Future<void> handleCopy() async {
await copyToClipboard(context, code, message: 'Copied code to clipboard');
if (!context.mounted) return;
isCopied.value = true;
Future.delayed(const Duration(seconds: 2), () {
if (context.mounted) isCopied.value = false;
});
}
final ink = this.ink;
// A fence's closing newline would otherwise render as a blank last line.
final shownCode = code.trimRight();
final codeBaseStyle = TextStyle(
fontFamily: CodeStyle.fontFamily,
fontSize: CodeStyle.fontSize,
height: CodeStyle.lineHeight,
color: ink ?? context.colors.onSurface,
);
final isDark = context.theme.brightness == Brightness.dark;
final codeTheme = isDark ? highlightDarkTheme : highlightLightTheme;
// Syntax colors are tuned for neutral cards and lose contrast on accents.
final codeSpans = useMemoized(
() => ink == null
? highlightCode(shownCode, name, codeTheme, codeBaseStyle)
: [TextSpan(text: shownCode)],
[code, name, isDark, ink],
);
return Container(
// In a bubble, the vertical margin brings the bubble's 8px vertical
// padding up to its 16px side padding, so the block is inset evenly and
// its corners stay concentric with the bubble's.
margin: bubble
? const EdgeInsets.symmetric(vertical: Grid.xs - Grid.xxs)
: const EdgeInsets.only(top: Grid.half),
decoration: BoxDecoration(
color: ink == null
? CodeStyle.background(context.colors)
: chatCodeTint(ink, 0.14),
borderRadius: BorderRadius.circular(
bubble ? Radii.container - Grid.xs : 12,
),
border: Border.all(
color:
ink?.withValues(alpha: 0.24) ?? CodeStyle.border(context.colors),
),
),
child: Stack(
children: [
// Even 12px insets; the right side also reserves the copy button.
Padding(
padding: const EdgeInsets.fromLTRB(
Grid.twelve,
Grid.twelve,
Grid.twelve + 28,
Grid.twelve,
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisSize: MainAxisSize.min,
children: [
if (name.isNotEmpty)
Padding(
padding: const EdgeInsets.only(bottom: Grid.half),
child: Text(
name,
style: context.textTheme.labelSmall?.copyWith(
color: ink ?? context.colors.onSurfaceVariant,
),
),
),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: RichText(
softWrap: false,
text: TextSpan(style: codeBaseStyle, children: codeSpans),
),
),
],
),
),
Positioned(
top: Grid.half + Grid.quarter,
right: Grid.half + Grid.quarter,
child: SizedBox(
width: 28,
height: 28,
child: IconButton(
onPressed: handleCopy,
padding: EdgeInsets.zero,
visualDensity: VisualDensity.compact,
style: IconButton.styleFrom(
tapTargetSize: MaterialTapTargetSize.shrinkWrap,
),
icon: Icon(
isCopied.value ? BuzzIcons.check : BuzzIcons.copy,
size: 14,
color:
ink ??
(isCopied.value
? context.colors.primary
: context.colors.onSurfaceVariant),
),
),
),
),
],
),
);
}
}
class _MentionMd extends InlineMd {
final Map<String, Set<String>> bindings;
final Map<String, String> displayLabels;
final Map<String, String> mentionNames;
final Map<String, String> mentionLabels;
final Set<String> agentMentionPubkeys;
final void Function(String pubkey)? onMentionTap;
late final RegExp _exp = _buildPrefixPattern(
prefix: '@',
knownNames: bindings.keys.map(_markdownMentionName),
genericTokenPattern: r'[A-Za-z0-9_][A-Za-z0-9_\u00A0-]*',
);
_MentionMd({
required this.bindings,
required this.displayLabels,
required this.mentionNames,
required this.mentionLabels,
required this.agentMentionPubkeys,
this.onMentionTap,
});
@override
RegExp get exp => _exp;
@override
InlineSpan span(
BuildContext context,
String text,
final GptMarkdownConfig config,
) {
final raw = exp.firstMatch(text.trim())?.group(0);
if (raw == null) {
return TextSpan(text: text, style: config.style);
}
final name = raw.substring(1).replaceAll('\u00A0', ' ').toLowerCase();
final matches = bindings[name] ?? const <String>{};
final pubkey = matches.length == 1 ? matches.single : null;
if (bindings.containsKey(name) && matches.length != 1) {
return TextSpan(text: text, style: config.style);
}
final displayName = name.contains(RegExp(r'\([0-9a-f]{64}\)'))
? displayLabels[name]
: mentionLabels[pubkey] ?? mentionNames[pubkey];
final isAgent =
pubkey != null && agentMentionPubkeys.contains(pubkey.toLowerCase());
final fullLabel = displayName ?? raw.substring(1);
final visibleLabel = fullLabel.replaceAllMapped(
RegExp(r'\(([0-9a-f]{64})\)'),
(m) => '(${m[1]!.substring(0, 8)}…${m[1]!.substring(60)})',
);
final pill = MessageMentionPill(
label: visibleLabel,
semanticsLabel: fullLabel,
isAgent: isAgent,
textStyle: config.style,
);
return WidgetSpan(
alignment: PlaceholderAlignment.baseline,
baseline: TextBaseline.alphabetic,
child: pubkey != null && onMentionTap != null
? GestureDetector(onTap: () => onMentionTap!(pubkey), child: pill)
: pill,
);
}
}
String _markdownMentionName(String name) => name.replaceAll(' ', '\u00A0');