HTML Decode issue with <img> tag

[VaarunSinha]

Steps to Reproduce

import 'package:flutter/material.dart';
import 'package:fleather/fleather.dart';
import 'package:parchment/codecs.dart';

void main() {
  runApp(FleatherApp());
}

class FleatherApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) => MaterialApp(
    home: HomePage()
  );
}

class HomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    const codec = ParchmentHtmlCodec();
    // String html = '<img src="abcd.png">'; // fails
    // String html = '<p><img src="abcd.png"></p>'; // fails
    String html = '<p>hello</p>'; // works

    final ParchmentDocument doc = codec.decode(html);
    FleatherController? controller = FleatherController(document: doc);

    return Scaffold(body: FleatherEditor(controller: controller));
    // return Scaffold(body: FleatherField(controller: controller)); // same behaviour
  }
}

Environment

• Web
• Flutter version 3.22.2
• Fleather version 1.16.1

Logs

Blog Content: <p><strong><em><u> lknn kjfnk nfkj kjfkn kjjf</u></em></strong></p><p><br></p><p><span class="ql-cursor"></span><img
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Another exception was thrown: UnimplementedError: Embeddable type "image" is not supported by default embed builder of FleatherEditor. You must pass your own builder function to embedBuilder property
of FleatherEditor or FleatherField widgets.```

[VaarunSinha]

Widget _embedBuilder(BuildContext context, fleather.EmbedNode node) {
  if (node.value.type == 'image') {
    final String sourceType = node.value.data['source_type'];
    final String source = node.value.data['source'];

    if (sourceType == 'assets') {
      return Padding(
        // Caret takes 2 pixels, hence not symmetric padding values.
        padding: const EdgeInsets.only(left: 4, right: 2, top: 2, bottom: 2),
        child: Container(
          width: 300,
          height: 300,
          decoration: BoxDecoration(
            image: DecorationImage(
              image: AssetImage(source),
              fit: BoxFit.cover,
            ),
          ),
        ),
      );
    } else if (source.startsWith('data:image')) {
      final base64String = source.split(',').last;
      final decodedBytes = base64Decode(base64String);

      return Padding(
        // Caret takes 2 pixels, hence not symmetric padding values.
        padding: const EdgeInsets.only(left: 4, right: 2, top: 2, bottom: 2),
        child: Container(
          width: 300,
          height: 300,
          decoration: BoxDecoration(
            image: DecorationImage(
              image: MemoryImage(decodedBytes),
              fit: BoxFit.cover,
            ),
          ),
        ),
      );
    }
  }

  throw UnimplementedError();
}

It doesnt work with my own custom embed builder

[svjetlanovicF]

I faced same/similar issue, @VaarunSinha did you maybe find some workaround?

[amantoux]

@svjetlanovicF @VaarunSinha indeed, it is not possible to convert embeds at the moment, this PR should adress it when it lands #371