8629e1e039
- Integrated localization for various dialog messages and UI elements in the chat and voice input components. - Updated the confirmation dialog to utilize localized strings for delete messages, improving user experience across different languages. - Enhanced voice input sheet to reflect localized text for status updates, action buttons, and prompts, ensuring consistency in user interactions. - Improved the file attachment widget to display the attachment label in a localized manner, enhancing accessibility for users in different regions. - Streamlined localization management by centralizing string retrieval, promoting maintainability and clarity in the codebase.
692 lines
20 KiB
Dart
692 lines
20 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/gestures.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_markdown_plus/flutter_markdown_plus.dart';
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import 'package:flutter_math_fork/flutter_math.dart';
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import 'package:markdown/markdown.dart' as md;
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import 'package:webview_flutter/webview_flutter.dart';
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import 'package:conduit/l10n/app_localizations.dart';
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import '../../theme/color_tokens.dart';
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import '../../theme/theme_extensions.dart';
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import 'code_block_header.dart';
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typedef MarkdownLinkTapCallback = void Function(String url, String title);
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class ConduitMarkdown {
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const ConduitMarkdown._();
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static Widget build({
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required BuildContext context,
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required String data,
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MarkdownLinkTapCallback? onTapLink,
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bool selectable = true,
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bool shrinkWrap = false,
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ScrollPhysics? physics,
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}) {
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return MarkdownBody(
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data: data,
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selectable: selectable,
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shrinkWrap: shrinkWrap,
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styleSheet: _buildStyleSheet(context),
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builders: _buildCustomBuilders(context, onTapLink),
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extensionSet: md.ExtensionSet.gitHubFlavored,
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onTapLink: onTapLink != null
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? (text, href, title) => onTapLink(href ?? '', title)
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: null,
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syntaxHighlighter: _CodeSyntaxHighlighter(context),
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inlineSyntaxes: _buildInlineSyntaxes(),
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);
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}
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static Widget buildBlock({
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required BuildContext context,
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required String data,
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MarkdownLinkTapCallback? onTapLink,
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bool selectable = true,
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}) {
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return build(
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context: context,
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data: data,
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onTapLink: onTapLink,
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selectable: selectable,
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shrinkWrap: true,
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);
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}
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static MarkdownStyleSheet _buildStyleSheet(BuildContext context) {
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final theme = context.conduitTheme;
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final material = Theme.of(context);
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final baseBody = AppTypography.bodyMediumStyle.copyWith(
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color: theme.textPrimary,
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height: 1.45,
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);
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final secondaryBody = AppTypography.bodySmallStyle.copyWith(
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color: theme.textSecondary,
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height: 1.45,
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);
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final codeBackground = theme.surfaceContainer.withValues(alpha: 0.55);
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final borderColor = theme.cardBorder.withValues(alpha: 0.25);
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return MarkdownStyleSheet(
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p: baseBody,
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h1: AppTypography.headlineLargeStyle.copyWith(color: theme.textPrimary),
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h2: AppTypography.headlineMediumStyle.copyWith(color: theme.textPrimary),
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h3: AppTypography.headlineSmallStyle.copyWith(color: theme.textPrimary),
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h4: AppTypography.bodyLargeStyle.copyWith(color: theme.textPrimary),
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h5: baseBody.copyWith(fontWeight: FontWeight.w600),
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h6: secondaryBody,
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a: baseBody.copyWith(
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color: material.colorScheme.primary,
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decoration: TextDecoration.underline,
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decorationColor: material.colorScheme.primary,
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),
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code: AppTypography.codeStyle.copyWith(
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color: theme.codeText,
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backgroundColor: codeBackground,
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),
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codeblockDecoration: BoxDecoration(
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color: codeBackground,
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borderRadius: BorderRadius.circular(AppBorderRadius.sm),
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border: Border.all(color: borderColor, width: BorderWidth.micro),
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),
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codeblockPadding: const EdgeInsets.all(Spacing.sm),
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blockquoteDecoration: BoxDecoration(
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border: Border(
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left: BorderSide(
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color: material.colorScheme.primary.withValues(alpha: 0.35),
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width: BorderWidth.small,
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),
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),
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),
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blockquotePadding: const EdgeInsets.symmetric(
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horizontal: Spacing.md,
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vertical: Spacing.sm,
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),
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blockquote: secondaryBody,
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listBullet: baseBody,
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listIndent: Spacing.lg,
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tableHead: secondaryBody.copyWith(fontWeight: FontWeight.w600),
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tableBody: secondaryBody,
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tableBorder: TableBorder.all(
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color: borderColor,
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width: BorderWidth.micro,
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),
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tableHeadAlign: TextAlign.start,
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tableColumnWidth: const FlexColumnWidth(),
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tableCellsPadding: const EdgeInsets.symmetric(
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horizontal: Spacing.sm,
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vertical: Spacing.xs,
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),
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horizontalRuleDecoration: BoxDecoration(
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border: Border(
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top: BorderSide(color: theme.dividerColor, width: BorderWidth.small),
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),
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),
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);
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}
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static Map<String, MarkdownElementBuilder> _buildCustomBuilders(
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BuildContext context,
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MarkdownLinkTapCallback? onTapLink,
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) {
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return {
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'code': _CodeBlockBuilder(context),
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'img': _ImageBuilder(context),
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'mermaid': _MermaidBuilder(context),
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'latex': _LatexBuilder(context),
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};
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}
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static List<md.InlineSyntax> _buildInlineSyntaxes() {
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return [_LatexInlineSyntax()];
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}
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static Widget buildMermaidBlock(BuildContext context, String code) {
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final conduitTheme = context.conduitTheme;
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final materialTheme = Theme.of(context);
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if (MermaidDiagram.isSupported) {
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return _buildMermaidContainer(
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context: context,
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conduitTheme: conduitTheme,
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materialTheme: materialTheme,
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code: code,
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);
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}
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return _buildUnsupportedMermaidContainer(
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context: context,
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conduitTheme: conduitTheme,
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code: code,
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);
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}
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static Widget _buildMermaidContainer({
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required BuildContext context,
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required ConduitThemeExtension conduitTheme,
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required ThemeData materialTheme,
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required String code,
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}) {
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final tokens = context.colorTokens;
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return Container(
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margin: const EdgeInsets.symmetric(vertical: Spacing.sm),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(AppBorderRadius.sm),
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border: Border.all(
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color: conduitTheme.cardBorder.withValues(alpha: 0.4),
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width: BorderWidth.micro,
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),
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),
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height: 360,
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width: double.infinity,
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child: ClipRRect(
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borderRadius: BorderRadius.circular(AppBorderRadius.sm),
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child: MermaidDiagram(
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code: code,
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brightness: materialTheme.brightness,
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colorScheme: materialTheme.colorScheme,
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tokens: tokens,
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),
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),
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);
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}
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static Widget _buildUnsupportedMermaidContainer({
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required BuildContext context,
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required ConduitThemeExtension conduitTheme,
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required String code,
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}) {
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final textStyle = AppTypography.bodySmallStyle.copyWith(
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color: conduitTheme.codeText.withValues(alpha: 0.7),
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);
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return Container(
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margin: const EdgeInsets.symmetric(vertical: Spacing.sm),
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padding: const EdgeInsets.all(Spacing.sm),
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decoration: BoxDecoration(
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color: conduitTheme.surfaceContainer.withValues(alpha: 0.35),
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borderRadius: BorderRadius.circular(AppBorderRadius.sm),
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border: Border.all(
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color: conduitTheme.cardBorder.withValues(alpha: 0.4),
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width: BorderWidth.micro,
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),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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'Mermaid preview is not available on this platform.',
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style: textStyle,
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),
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const SizedBox(height: Spacing.xs),
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SelectableText(
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code,
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maxLines: null,
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textAlign: TextAlign.left,
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textDirection: TextDirection.ltr,
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textWidthBasis: TextWidthBasis.parent,
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style: AppTypography.codeStyle.copyWith(
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color: conduitTheme.codeText,
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),
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),
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],
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),
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);
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}
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}
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// Code syntax highlighting
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class _CodeSyntaxHighlighter extends SyntaxHighlighter {
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_CodeSyntaxHighlighter(this.context);
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final BuildContext context;
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@override
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TextSpan format(String source) {
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final theme = context.conduitTheme;
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return TextSpan(
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style: AppTypography.codeStyle.copyWith(color: theme.codeText),
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children: [TextSpan(text: source)],
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);
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}
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}
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// Custom code block builder with header
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class _CodeBlockBuilder extends MarkdownElementBuilder {
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_CodeBlockBuilder(this.context);
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final BuildContext context;
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@override
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Widget? visitElementAfter(md.Element element, TextStyle? preferredStyle) {
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final theme = context.conduitTheme;
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final isDark = Theme.of(context).brightness == Brightness.dark;
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final code = element.textContent;
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final language =
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element.attributes['class']?.replaceFirst('language-', '') ??
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'plaintext';
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final normalizedLanguage = language.trim().isEmpty
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? 'plaintext'
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: language.trim();
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// Match GitHub/Atom theme colors for code block container
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final codeBackground = isDark
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? const Color(0xFF282c34) // Atom One Dark background
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: const Color(0xFFfafbfc); // GitHub light background
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return Container(
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margin: const EdgeInsets.symmetric(vertical: Spacing.sm),
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decoration: BoxDecoration(
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color: codeBackground,
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borderRadius: BorderRadius.circular(6),
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),
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clipBehavior: Clip.antiAlias,
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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CodeBlockHeader(
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language: normalizedLanguage,
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onCopy: () async {
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await Clipboard.setData(ClipboardData(text: code));
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if (!context.mounted) {
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return;
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}
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ScaffoldMessenger.of(context).hideCurrentSnackBar();
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final l10n = AppLocalizations.of(context);
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(
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l10n?.codeCopiedToClipboard ?? 'Code copied to clipboard.',
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),
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),
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);
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},
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),
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SingleChildScrollView(
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scrollDirection: Axis.horizontal,
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padding: const EdgeInsets.all(Spacing.md),
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child: SelectableText(
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code,
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style: AppTypography.codeStyle.copyWith(
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color: theme.codeText,
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fontFamily: AppTypography.monospaceFontFamily,
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),
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),
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),
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],
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),
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);
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}
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}
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// Custom image builder
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class _ImageBuilder extends MarkdownElementBuilder {
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_ImageBuilder(this.context);
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final BuildContext context;
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@override
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Widget? visitElementAfter(md.Element element, TextStyle? preferredStyle) {
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final theme = context.conduitTheme;
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final url = element.attributes['src'] ?? '';
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final uri = Uri.tryParse(url);
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if (uri == null) {
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return _buildImageError(context, theme);
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}
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if (uri.scheme == 'data') {
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return _buildBase64Image(uri.toString(), context, theme);
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}
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if (uri.scheme.isEmpty || uri.scheme == 'http' || uri.scheme == 'https') {
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return _buildNetworkImage(uri.toString(), context, theme);
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}
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return _buildImageError(context, theme);
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}
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Widget _buildBase64Image(
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String dataUrl,
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BuildContext context,
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ConduitThemeExtension theme,
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) {
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try {
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final commaIndex = dataUrl.indexOf(',');
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if (commaIndex == -1) {
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throw FormatException(
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AppLocalizations.of(context)?.invalidDataUrl ??
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'Invalid data URL format',
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);
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}
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final base64String = dataUrl.substring(commaIndex + 1);
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final imageBytes = base64.decode(base64String);
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return Container(
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margin: const EdgeInsets.symmetric(vertical: Spacing.sm),
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constraints: const BoxConstraints(maxWidth: 480, maxHeight: 480),
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child: ClipRRect(
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borderRadius: BorderRadius.circular(AppBorderRadius.md),
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child: Image.memory(
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imageBytes,
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fit: BoxFit.contain,
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errorBuilder: (context, error, stackTrace) {
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return _buildImageError(context, theme);
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},
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),
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),
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);
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} catch (_) {
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return _buildImageError(context, theme);
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}
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}
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Widget _buildNetworkImage(
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String url,
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BuildContext context,
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ConduitThemeExtension theme,
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) {
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return CachedNetworkImage(
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imageUrl: url,
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placeholder: (context, _) => Container(
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height: 200,
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decoration: BoxDecoration(
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color: theme.surfaceBackground.withValues(alpha: 0.5),
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borderRadius: BorderRadius.circular(AppBorderRadius.md),
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),
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child: Center(
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child: CircularProgressIndicator(
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color: theme.loadingIndicator,
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strokeWidth: 2,
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),
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),
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),
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errorWidget: (context, url, error) => _buildImageError(context, theme),
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imageBuilder: (context, imageProvider) => Container(
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margin: const EdgeInsets.symmetric(vertical: Spacing.sm),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(AppBorderRadius.md),
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image: DecorationImage(image: imageProvider, fit: BoxFit.contain),
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),
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),
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);
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}
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Widget _buildImageError(BuildContext context, ConduitThemeExtension theme) {
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return Container(
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height: 120,
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decoration: BoxDecoration(
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color: theme.surfaceBackground.withValues(alpha: 0.3),
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borderRadius: BorderRadius.circular(AppBorderRadius.md),
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border: Border.all(
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color: theme.cardBorder.withValues(alpha: 0.4),
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width: BorderWidth.micro,
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),
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),
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child: Center(
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child: Icon(Icons.broken_image_outlined, color: theme.iconSecondary),
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),
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);
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}
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}
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// Mermaid diagram builder
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class _MermaidBuilder extends MarkdownElementBuilder {
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_MermaidBuilder(this.context);
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final BuildContext context;
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@override
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Widget? visitElementAfter(md.Element element, TextStyle? preferredStyle) {
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final code = element.textContent;
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return ConduitMarkdown.buildMermaidBlock(context, code);
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}
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}
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// LaTeX builder
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class _LatexBuilder extends MarkdownElementBuilder {
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_LatexBuilder(this.context);
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final BuildContext context;
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@override
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Widget? visitElementAfter(md.Element element, TextStyle? preferredStyle) {
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final isDark = Theme.of(context).brightness == Brightness.dark;
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final content = element.textContent.trim();
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final isInline = element.attributes['isInline'] == 'true';
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final baseStyle = (preferredStyle ?? AppTypography.bodyMediumStyle)
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.copyWith(color: isDark ? Colors.white : Colors.black);
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if (content.isEmpty) {
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return Text(element.textContent, style: baseStyle);
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}
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final mathWidget = Math.tex(
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content,
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mathStyle: MathStyle.text,
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textStyle: baseStyle,
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textScaleFactor: 1,
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onErrorFallback: (error) {
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return Text(content, style: baseStyle.copyWith(color: Colors.red));
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},
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);
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if (isInline) {
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return mathWidget;
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}
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: Spacing.xs),
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child: Center(child: mathWidget),
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);
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}
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}
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// LaTeX inline syntax
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class _LatexInlineSyntax extends md.InlineSyntax {
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_LatexInlineSyntax()
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: super(
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r'(\$\$[\s\S]+?\$\$)|(\$[^\n]+?\$)|(\\\([\s\S]+?\\\))|(\\\[[\s\S]+?\\\])',
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);
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@override
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bool onMatch(md.InlineParser parser, Match match) {
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final raw = match.group(0) ?? '';
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String content = raw;
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bool isInline = true;
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if (raw.startsWith(r'$$') && raw.endsWith(r'$$') && raw.length > 4) {
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content = raw.substring(2, raw.length - 2);
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isInline = false;
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} else if (raw.startsWith(r'$') && raw.endsWith(r'$') && raw.length > 2) {
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content = raw.substring(1, raw.length - 1);
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isInline = true;
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} else if (raw.startsWith(r'\(') && raw.endsWith(r'\)') && raw.length > 4) {
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content = raw.substring(2, raw.length - 2);
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isInline = true;
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} else if (raw.startsWith(r'\[') && raw.endsWith(r'\]') && raw.length > 4) {
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content = raw.substring(2, raw.length - 2);
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isInline = false;
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}
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final element = md.Element.text('latex', content);
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element.attributes['isInline'] = isInline.toString();
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parser.addNode(element);
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return true;
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}
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}
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// Mermaid diagram WebView widget
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class MermaidDiagram extends StatefulWidget {
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const MermaidDiagram({
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super.key,
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required this.code,
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required this.brightness,
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required this.colorScheme,
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required this.tokens,
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});
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final String code;
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final Brightness brightness;
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final ColorScheme colorScheme;
|
|
final AppColorTokens tokens;
|
|
|
|
static bool get isSupported => !kIsWeb;
|
|
|
|
static Future<String> _loadScript() {
|
|
return _scriptFuture ??= rootBundle.loadString('assets/mermaid.min.js');
|
|
}
|
|
|
|
static Future<String>? _scriptFuture;
|
|
|
|
@override
|
|
State<MermaidDiagram> createState() => _MermaidDiagramState();
|
|
}
|
|
|
|
class _MermaidDiagramState extends State<MermaidDiagram> {
|
|
WebViewController? _controller;
|
|
String? _script;
|
|
final Set<Factory<OneSequenceGestureRecognizer>> _gestureRecognizers =
|
|
<Factory<OneSequenceGestureRecognizer>>{
|
|
Factory<OneSequenceGestureRecognizer>(() => EagerGestureRecognizer()),
|
|
};
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
if (!MermaidDiagram.isSupported) {
|
|
return;
|
|
}
|
|
MermaidDiagram._loadScript().then((value) {
|
|
if (!mounted) {
|
|
return;
|
|
}
|
|
_script = value;
|
|
_controller = WebViewController()
|
|
..setJavaScriptMode(JavaScriptMode.unrestricted)
|
|
..setBackgroundColor(Colors.transparent);
|
|
_loadHtml();
|
|
setState(() {});
|
|
});
|
|
}
|
|
|
|
@override
|
|
void didUpdateWidget(MermaidDiagram oldWidget) {
|
|
super.didUpdateWidget(oldWidget);
|
|
if (_controller == null || _script == null) {
|
|
return;
|
|
}
|
|
final codeChanged = oldWidget.code != widget.code;
|
|
final themeChanged =
|
|
oldWidget.brightness != widget.brightness ||
|
|
oldWidget.colorScheme != widget.colorScheme ||
|
|
oldWidget.tokens != widget.tokens;
|
|
if (codeChanged || themeChanged) {
|
|
_loadHtml();
|
|
}
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
if (_controller == null) {
|
|
return const Center(child: CircularProgressIndicator());
|
|
}
|
|
return SizedBox.expand(
|
|
child: WebViewWidget(
|
|
controller: _controller!,
|
|
gestureRecognizers: _gestureRecognizers,
|
|
),
|
|
);
|
|
}
|
|
|
|
void _loadHtml() {
|
|
if (_controller == null || _script == null) {
|
|
return;
|
|
}
|
|
_controller!.loadHtmlString(_buildHtml(widget.code, _script!));
|
|
}
|
|
|
|
String _buildHtml(String code, String script) {
|
|
final theme = widget.brightness == Brightness.dark ? 'dark' : 'default';
|
|
final primary = _toHex(widget.tokens.brandTone60);
|
|
final secondary = _toHex(widget.tokens.accentTeal60);
|
|
final background = _toHex(widget.tokens.codeBackground);
|
|
final onBackground = _toHex(widget.tokens.codeText);
|
|
|
|
return '''
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<style>
|
|
body {
|
|
margin: 0;
|
|
background-color: transparent;
|
|
}
|
|
#container {
|
|
width: 100%;
|
|
height: 100%;
|
|
display: flex;
|
|
justify-content: center;
|
|
align-items: center;
|
|
background-color: transparent;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div id="container">
|
|
<div class="mermaid">$code</div>
|
|
</div>
|
|
<script>$script</script>
|
|
<script>
|
|
mermaid.initialize({
|
|
theme: '$theme',
|
|
themeVariables: {
|
|
primaryColor: '$primary',
|
|
primaryTextColor: '$onBackground',
|
|
primaryBorderColor: '$secondary',
|
|
background: '$background'
|
|
},
|
|
});
|
|
mermaid.contentLoaded();
|
|
</script>
|
|
</body>
|
|
</html>
|
|
''';
|
|
}
|
|
|
|
String _toHex(Color color) {
|
|
int channel(double value) {
|
|
final scaled = (value * 255).round();
|
|
if (scaled < 0) {
|
|
return 0;
|
|
}
|
|
if (scaled > 255) {
|
|
return 255;
|
|
}
|
|
return scaled;
|
|
}
|
|
|
|
final argb =
|
|
(channel(color.a) << 24) |
|
|
(channel(color.r) << 16) |
|
|
(channel(color.g) << 8) |
|
|
channel(color.b);
|
|
return '#${argb.toRadixString(16).padLeft(8, '0')}';
|
|
}
|
|
}
|