[Web] Unexpected null value thrown when focus on editor

[radoslaw-sz]

Hello,

Example:

import 'package:flutter/material.dart';
import 'package:flutter_quill/models/documents/document.dart';
import 'package:flutter_quill/widgets/controller.dart';
import 'package:flutter_quill/widgets/editor.dart';

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

class MyApp extends StatefulWidget {


  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

  QuillController _controller;

  final FocusNode _focusNode = FocusNode();

  @override
  void initState() {
    final doc = Document()..insert(0, 'Empty asset');
    _controller = QuillController(
      document: doc, selection: TextSelection.collapsed(offset: 0));
    super.initState();
  }
  
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
      body: _quill(),
      )
    );
  }
  Widget _quill() {
    return Column(
      children: <Widget>[
        Container(
          color: Colors.white,
          padding: const EdgeInsets.only(left: 16.0, right: 16.0),
          child: QuillEditor(
            controller: _controller,
            scrollController: ScrollController(),
            scrollable: true,
            focusNode: _focusNode,
            autoFocus: false,
            readOnly: false,
            placeholder: 'Add content',
            enableInteractiveSelection: true,
            expands: false,
            padding: EdgeInsets.zero,
          ),
        ),
      ],
    );
  }
}

Makes unexpected null value thrown:

══╡ EXCEPTION CAUGHT BY FOUNDATION LIBRARY ╞════════════════════════════════════════════════════════
The following TypeErrorImpl was thrown while dispatching notifications for FocusNode:
Unexpected null value.

When the exception was thrown, this was the stack:
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 236:49      throw_
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 518:63  nullCheck
packages/flutter_quill/widgets/raw_editor.dart 973:25                                                                          [_updateOrDisposeSelectionOverlayIfNeeded]
packages/flutter_quill/widgets/raw_editor.dart 984:5                                                                           [_handleFocusChanged]
packages/flutter/src/foundation/change_notifier.dart 243:16                                                                    notifyListeners
packages/flutter/src/widgets/focus_manager.dart 1052:5                                                                         [_notify]
packages/flutter/src/widgets/focus_manager.dart 1771:11                                                                        [_applyFocusChange]
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/schedule_microtask.dart 40:11                                  _microtaskLoop
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/schedule_microtask.dart 49:5                                   _startMicrotaskLoop
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 166:15               <fn>

The FocusNode sending notification was:
  FocusNode#8a0dc([PRIMARY FOCUS])
════════════════════════════════════════════════════════════════════════════════════════════════════
Another exception was thrown: Unexpected null value.

[IntegroInfotech]

Hello,

Example:

import 'package:flutter/material.dart';
import 'package:flutter_quill/models/documents/document.dart';
import 'package:flutter_quill/widgets/controller.dart';
import 'package:flutter_quill/widgets/editor.dart';

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

class MyApp extends StatefulWidget {


  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {

  QuillController _controller;

  final FocusNode _focusNode = FocusNode();

  @override
  void initState() {
    final doc = Document()..insert(0, 'Empty asset');
    _controller = QuillController(
      document: doc, selection: TextSelection.collapsed(offset: 0));
    super.initState();
  }
  
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
      body: _quill(),
      )
    );
  }
  Widget _quill() {
    return Column(
      children: <Widget>[
        Container(
          color: Colors.white,
          padding: const EdgeInsets.only(left: 16.0, right: 16.0),
          child: QuillEditor(
            controller: _controller,
            scrollController: ScrollController(),
            scrollable: true,
            focusNode: _focusNode,
            autoFocus: false,
            readOnly: false,
            placeholder: 'Add content',
            enableInteractiveSelection: true,
            expands: false,
            padding: EdgeInsets.zero,
          ),
        ),
      ],
    );
  }
}

Makes unexpected null value thrown:

══╡ EXCEPTION CAUGHT BY FOUNDATION LIBRARY ╞════════════════════════════════════════════════════════
The following TypeErrorImpl was thrown while dispatching notifications for FocusNode:
Unexpected null value.

When the exception was thrown, this was the stack:
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 236:49      throw_
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 518:63  nullCheck
packages/flutter_quill/widgets/raw_editor.dart 973:25                                                                          [_updateOrDisposeSelectionOverlayIfNeeded]
packages/flutter_quill/widgets/raw_editor.dart 984:5                                                                           [_handleFocusChanged]
packages/flutter/src/foundation/change_notifier.dart 243:16                                                                    notifyListeners
packages/flutter/src/widgets/focus_manager.dart 1052:5                                                                         [_notify]
packages/flutter/src/widgets/focus_manager.dart 1771:11                                                                        [_applyFocusChange]
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/schedule_microtask.dart 40:11                                  _microtaskLoop
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/async/schedule_microtask.dart 49:5                                   _startMicrotaskLoop
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 166:15               <fn>

The FocusNode sending notification was:
  FocusNode#8a0dc([PRIMARY FOCUS])
════════════════════════════════════════════════════════════════════════════════════════════════════
Another exception was thrown: Unexpected null value.

Even I am facing same Problem

[guruprakashIT]

Even i am facing the same issue

[guruprakashIT]

pls close this issue because it's work on

new version 1.3.*