Solian/lib/widgets/markdown_text_content.dart

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import 'package:flutter/material.dart';
import 'package:flutter_markdown_selectionarea/flutter_markdown.dart';
import 'package:gap/gap.dart';
import 'package:get/get.dart';
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import 'package:markdown/markdown.dart' as markdown;
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import 'package:markdown/markdown.dart';
import 'package:solian/providers/stickers.dart';
import 'package:solian/widgets/attachments/attachment_list.dart';
import 'package:solian/widgets/auto_cache_image.dart';
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import 'package:url_launcher/url_launcher_string.dart';
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import 'account/account_profile_popup.dart';
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class MarkdownTextContent extends StatelessWidget {
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final String content;
final String parentId;
final bool isSelectable;
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final bool isLargeText;
final bool isAutoWarp;
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const MarkdownTextContent({
super.key,
required this.content,
required this.parentId,
this.isSelectable = false,
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this.isLargeText = false,
this.isAutoWarp = false,
});
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Widget _buildContent(BuildContext context) {
final stickerRegex = RegExp(r':([-\w]+):');
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// Split the content into paragraphs
final paragraphs = content.split(RegExp(r'\n\s*\n'));
// Iterate over each paragraph to process stickers individually
List<Widget> contentWidgets = [];
for (var idx = 0; idx < paragraphs.length; idx++) {
// Getting paragraph
var paragraph = paragraphs[idx];
// Auto adding new-lines
if (isAutoWarp) {
paragraph = paragraph.replaceAll('\n', '\\\n');
}
// Matching stickers
final stickerMatch = stickerRegex.allMatches(paragraph);
final isOnlySticker =
paragraph.replaceAll(stickerRegex, '').trim().isEmpty;
contentWidgets.add(
Markdown(
shrinkWrap: true,
physics: const NeverScrollableScrollPhysics(),
data: paragraph,
padding: EdgeInsets.zero,
styleSheet: MarkdownStyleSheet.fromTheme(
Theme.of(context),
).copyWith(
textScaleFactor: isLargeText ? 1.1 : 1,
blockquote: TextStyle(
color: Theme.of(context).colorScheme.onSurfaceVariant,
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),
blockquoteDecoration: BoxDecoration(
color: Theme.of(context).colorScheme.surfaceContainerHigh,
borderRadius: const BorderRadius.all(Radius.circular(4)),
),
horizontalRuleDecoration: BoxDecoration(
border: Border(
top: BorderSide(
width: 1.0,
color: Theme.of(context).dividerColor,
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),
),
),
),
extensionSet: markdown.ExtensionSet(
markdown.ExtensionSet.gitHubFlavored.blockSyntaxes,
<markdown.InlineSyntax>[
_UserNameCardInlineSyntax(),
_CustomEmoteInlineSyntax(),
markdown.EmojiSyntax(),
markdown.AutolinkSyntax(),
markdown.AutolinkExtensionSyntax(),
...markdown.ExtensionSet.gitHubFlavored.inlineSyntaxes
],
),
onTapLink: (text, href, title) async {
if (href == null) return;
if (href.startsWith('solink://')) {
final segments = href.replaceFirst('solink://', '').split('/');
switch (segments[0]) {
case 'users':
showModalBottomSheet(
useRootNavigator: true,
isScrollControlled: true,
backgroundColor: Theme.of(context).colorScheme.surface,
context: context,
builder: (context) => AccountProfilePopup(
name: segments[1],
),
);
}
return;
}
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await launchUrlString(
href,
mode: LaunchMode.externalApplication,
);
},
imageBuilder: (uri, title, alt) {
var url = uri.toString();
double? width, height;
BoxFit? fit;
if (url.startsWith('solink://')) {
final segments = url.replaceFirst('solink://', '').split('/');
switch (segments[0]) {
case 'stickers':
double radius = 8;
final StickerProvider sticker = Get.find();
// Adjust sticker size based on the sticker count in this paragraph
if (stickerMatch.length <= 1 && isOnlySticker) {
width = 128;
height = 128;
} else if (stickerMatch.length <= 3 && isOnlySticker) {
width = 32;
height = 32;
} else {
radius = 4;
width = 16;
height = 16;
}
fit = BoxFit.contain;
return ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(radius)),
child: Container(
width: width,
height: height,
color: Theme.of(context).colorScheme.surfaceContainer,
child: FutureBuilder(
future: sticker.getStickerByAlias(segments[1]),
builder: (context, snapshot) {
if (!snapshot.hasData) {
return const Center(
child: CircularProgressIndicator());
}
return AutoCacheImage(
snapshot.data!.imageUrl,
width: width,
height: height,
fit: fit,
noErrorWidget: true,
);
},
),
),
).paddingSymmetric(vertical: 4);
case 'attachments':
const radius = BorderRadius.all(Radius.circular(8));
return LimitedBox(
maxHeight: MediaQuery.of(context).size.width,
child: ClipRRect(
borderRadius: radius,
child: AttachmentSelfContainedEntry(
isDense: true,
parentId: parentId,
rid: segments[1],
),
),
).paddingSymmetric(vertical: 4);
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}
}
return AutoCacheImage(
url,
width: width,
height: height,
fit: fit,
);
},
),
);
if (idx < paragraphs.length - 1) {
contentWidgets.add(const Gap(4));
}
}
// Return the list of widgets for the paragraphs
return Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: contentWidgets,
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);
}
@override
Widget build(BuildContext context) {
if (isSelectable) {
return SelectionArea(child: _buildContent(context));
}
return _buildContent(context);
}
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}
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class _UserNameCardInlineSyntax extends InlineSyntax {
_UserNameCardInlineSyntax() : super(r'@[a-zA-Z0-9_]+');
@override
bool onMatch(markdown.InlineParser parser, Match match) {
final alias = match[0]!;
final anchor = markdown.Element.text('a', alias)
..attributes['href'] = Uri.encodeFull(
'solink://users/${alias.substring(1)}',
);
parser.addNode(anchor);
return true;
}
}
class _CustomEmoteInlineSyntax extends InlineSyntax {
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_CustomEmoteInlineSyntax() : super(r':([-\w]+):');
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@override
bool onMatch(markdown.InlineParser parser, Match match) {
final StickerProvider sticker = Get.find();
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final alias = match[1]!.toUpperCase();
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if (sticker.stickerCache.containsKey(alias) &&
sticker.stickerCache[alias] == null) {
parser.advanceBy(1);
return false;
}
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final element = markdown.Element.empty('img');
element.attributes['src'] = 'solink://stickers/$alias';
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parser.addNode(element);
return true;
}
}