MarkdownElementBuilder.visitElementAfter produces assertion error #139130
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Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Steps to reproduce
Create an extended class of MarkdownElementBuilder and override the visitElementAfter method.
Run it.
Expected results
In my code sample, the p paragraph containing the "Hello World" shouldbe replaced with a Text widget containing the text replaced "Replaced".
Actual results
An exception is fired:
The following assertion was thrown building Container(padding: EdgeInsets.all(20.0), bg: BoxDecoration(color: Color(0xfffbfcfe), borderRadius: BorderRadius.circular(10.0))):
'package:flutter_markdown/src/builder.dart': Failed assertion: line 199 pos 12: '_inlines.isEmpty': is not true.
Code sample
Code sample
Build a widget containing MarkdownBody:
SizedBox(
width: 400,
child: MarkdownBody(
data: '## Prompt\n\nHello World\n',
selectable: true,
builders: {
'p': ParagraphBuilder(),
},
),
)ParagraphBuilder:
class ParagraphBuilder extends MarkdownElementBuilder {
@override
Widget visitElementAfter(md.Element element, _) {
return Text('Replaced');
}
}Screenshots or Video
Screenshots / Video demonstration
Logs
Logs
======== Exception caught by widgets library =======================================================
The following assertion was thrown building Container(padding: EdgeInsets.all(20.0), bg: BoxDecoration(color: Color(0xfffbfcfe), borderRadius: BorderRadius.circular(10.0))):
'package:flutter_markdown/src/builder.dart': Failed assertion: line 199 pos 12: '_inlines.isEmpty': is not true.
The relevant error-causing widget was:
Container Container:file:///Users/danstorm/StudioProjects/ollamaui/lib/screens/partials/new_chat.dart:32:12
When the exception was thrown, this was the stack:
#2 MarkdownBuilder.build (package:flutter_markdown/src/builder.dart:199:12)
#3 _MarkdownWidgetState._parseMarkdown (package:flutter_markdown/src/widget.dart:360:25)
#4 _MarkdownWidgetState.didUpdateWidget (package:flutter_markdown/src/widget.dart:313:7)
#5 StatefulElement.update (package:flutter/src/widgets/framework.dart:5652:55)
#6 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#7 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#8 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#9 Element.updateChildren (package:flutter/src/widgets/framework.dart:3973:32)
#10 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6918:17)
#11 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#12 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#13 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#14 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#15 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#16 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#17 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#18 StatelessElement.update (package:flutter/src/widgets/framework.dart:5556:5)
#19 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#20 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#21 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#22 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#23 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#24 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#25 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#26 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#27 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#28 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#29 Element.updateChildren (package:flutter/src/widgets/framework.dart:3973:32)
#30 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6918:17)
#31 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#32 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#33 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#34 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#35 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#36 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#37 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#38 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#39 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#40 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#41 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#42 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#43 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#44 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#45 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#46 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#47 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#48 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#49 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#50 StatelessElement.update (package:flutter/src/widgets/framework.dart:5556:5)
#51 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#52 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#53 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#54 StatelessElement.update (package:flutter/src/widgets/framework.dart:5556:5)
#55 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#56 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#57 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#58 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#59 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#60 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#61 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#62 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#63 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#64 Element.updateChildren (package:flutter/src/widgets/framework.dart:3973:32)
#65 MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6918:17)
#66 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#67 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#68 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#69 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#70 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#71 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#72 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#73 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#74 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#75 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#76 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#77 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#78 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#79 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#80 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#81 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#82 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#83 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#84 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#85 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#86 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#87 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#88 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#89 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#90 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#91 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#92 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#93 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#94 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#95 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#96 SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:6765:14)
#97 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#98 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#99 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#100 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#101 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#102 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#103 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#104 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#105 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#106 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#107 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#108 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#109 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#110 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#111 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#112 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#113 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#114 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#115 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#116 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#117 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#118 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#119 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#120 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#121 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#122 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#123 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#124 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#125 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#126 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#127 ProxyElement.update (package:flutter/src/widgets/framework.dart:5809:5)
#128 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#129 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#130 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#131 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#132 StatefulElement.update (package:flutter/src/widgets/framework.dart:5666:5)
#133 Element.updateChild (package:flutter/src/widgets/framework.dart:3824:15)
#134 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:5505:16)
#135 StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:5643:11)
#136 Element.rebuild (package:flutter/src/widgets/framework.dart:5196:7)
#137 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2904:19)
#138 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:989:21)
#139 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:448:5)
#140 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1386:15)
#141 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1311:9)
#142 SchedulerBinding.scheduleWarmUpFrame.<anonymous closure> (package:flutter/src/scheduler/binding.dart:1034:7)
#146 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184:12)
(elided 5 frames from class _AssertionError, class _Timer, and dart:async-patch)
====================================================================================================Flutter Doctor output
Doctor output
[✓] Flutter (Channel master, 3.17.0-16.0.pre.7, on macOS 14.1.1 23B81 darwin-arm64, locale da-DK)
• Flutter version 3.17.0-16.0.pre.7 on channel master at /Users/danstorm/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision c45f583799 (29 hours ago), 2023-11-27 00:04:28 -0500
• Engine revision 292a92166a
• Dart version 3.3.0 (build 3.3.0-152.0.dev)
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Issues that are less important to the Flutter projectStack traces logged to the consoleFound to occur in 3.16Found to occur in 3.17The issue has been confirmed reproducible and is ready to work onflutter/packages flutter_markdownflutter/packages repository. See also p: labels.Owned by Ecosystem teamTriaged by Ecosystem team