singerdmx/flutter-quill

Rich text editor for Flutter

flutter-quill's Issues

List items cut off before text is added

Hi,

I'm enjoying using this library so far - great work. I did spot a small bug when adding new lines. The screenshot sums it up - when adding a new line in a list item, the leading indicators (e.g. 1., 2.) are cut off vertically before text is added. When text is added, they are no longer cut off.

How to set initial value and how to get Html text?

Hi, I've installed this plugin and I want to know two things:

• How I set an initial value to QuillController?
• How to get Html code from QuillController?

Best regards, thank you.

Is there any best practice to render the quill to read only on flutter?

Hi, im using flutter-quill for a simple article reading app. I successfully render the quill delta on the flutter with the help of QuillEditor.basic() or setting up the QuillEditor via readOnly parameter.

But somehow, i figure that _getIndentWidth on the EditableTextBlock class always returning 32px left padding. This behaviour resulting in our app to have look like this.

Is there any way for me to override this behaviour? Or maybe you guys have a way to render the quill delta just for reading purpose?

Thanks.

how to get First image link from QuillEditor ?

Hi, I just want to get the first image link from the data that the user entered in quillEditor. My app stores images in device storage using the path provider package. I printed the data and got this insert⟨ {image: /data/user/0/com.example.notes/app_flutter/image_picker8603960138221828112.jpg} ⟩

but don't know how to get the first image link from this line. is there any idea?

Help | Suggestion

Need to display the document (part say 5 to 6 lines) in listview. Basically want to show some glimpses of the document and then when user clicks on particular row, we will show the full document

Interactive selection work wrong

Both handler at the front of the range. The right way is one at the front and another at the end.

indent take effect for all lines not only first line.

Error: The non-abstract class 'RawEditorState' is missing implementations for these members:

Stack trace:

Launching lib/main-dev.dart on Google Pixel 3 in debug mode...
../../../../flutter/.pub-cache/hosted/pub.dartlang.org/flutter_quill-1.0.2/lib/widgets/raw_editor.dart:112:7: Error: The non-abstract class 'RawEditorState' is missing implementations for these members:
 - TextSelectionDelegate.userUpdateTextEditingValue                     
Try to either                                                           
 - provide an implementation,                                           
 - inherit an implementation from a superclass or mixin,                
 - mark the class as abstract, or                                       
 - provide a 'noSuchMethod' implementation.                             
                                                                        
class RawEditorState extends EditorState                                
      ^^^^^^^^^^^^^^                                                    
../../../../flutter/packages/flutter/lib/src/services/text_input.dart:822:8: Context: 'TextSelectionDelegate.userUpdateTextEditingValue' is defined here.
  void userUpdateTextEditingValue(TextEditingValue value, SelectionChangedCause cause);
       ^^^^^^^^^^^^^^^^^^^^^^^^^^                                       
../../../../flutter/.pub-cache/hosted/pub.dartlang.org/flutter_quill-1.0.2/lib/widgets/raw_editor.dart:1019:8: Error: The method 'RawEditorState.hideToolbar' has fewer positional arguments than those of overridden method 'TextSelectionDelegate.hideToolbar'.
  void hideToolbar() {                                                  
       ^                                                                
../../../../flutter/packages/flutter/lib/src/services/text_input.dart:829:8: Context: This is the overridden method ('hideToolbar').
  void hideToolbar([bool hideHandles = true]);                          
       ^                                                                
                                                                        
                                                                        
FAILURE: Build failed with an exception.                                
                                                                        
* Where:                                                                
Script '/home/mehrdad/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 1029
                                                                        
* What went wrong:                                                      
Execution failed for task ':app:compileFlutterBuildDevDebug'.           
> Process 'command '/home/mehrdad/flutter/bin/flutter'' finished with non-zero exit value 1
                                                                        
* Try:                                                                  
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
                                                                        
* Get more help at https://help.gradle.org                              
                                                                        
BUILD FAILED in 1m 45s

pubspec.yml
flutter_quill: ^1.0.2

flutter doctor

▶ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel master, 2.1.0-11.0.pre.145, on Linux, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 3.6)
[✓] IntelliJ IDEA Ultimate Edition (version 2020.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2020.2)
[✓] VS Code (version 1.54.1)
[✓] Connected device (2 available)

• No issues found!

Line Height is not calculating based on font size.

when we have a large font size line-height has some problem.

Editor view bounces in 0.3.1

In the new 0.3.1 release, unfortunately, the view always jumps up. Probably it scrolls to the bottom every time a letter is entered. This brings a constant scrolling effect.

RPReplay_Final1614032720.mp4

I think it has to do with the following commit: 471c1cb

In version 0.3.0 the problem does not occur and therefore I went back to this release. So no stress.

cursor position error after dynamic insert

My requirement is when user tap enter then auto insert two space. and my code as follows.
when I auto insert space, I expect cursor appear after space but now it appear before space
May be my code is wrong. please give me some suggestion Thank you.

I wish you can provide more examples.

@OverRide
void initState() {
this._controller.addListener(() {
this._controller.changes.first.then((value) {
if (value.item2.length >= 2 &&
value.item2[1].isInsert &&
value.item2[1].data == "\n") {
final index = this._controller.selection.baseOffset;
this._controller.document.insert(index, "　　");
}
});
});
}

How to open link in editor?

What does onLaunchUrl do? How can I launch URL form the editor?

Is there a way to get or load html content

Hello,

I really like this package, it looks promising. I only have one question:
is there an Html converter? what if we want to get or load html content in editor?

Thanks.

Add support for Desktop platform.

It would be great to support desktop platform.

Save Written Data to firebase

I am trying to build an article app and I need to save the data inputted to firebase or any server then retrieve it back. How can this be done?

Text styling doesn't work on web

• On the change in values in the dropdown, there is no change in the style of the text.

Create the attributeBuilder method

Is it possible to create an attributeBuilder method that works just like embedBuilder? I have the code below, but I can't customize the view

{ "attributes": { "list": "checked" }, "insert": "\n" }, { "attributes": { "list": "unchecked" }, "insert": "\n" }

[WEB] Text is not displayed while typing - only when I change the browser window size (set state)

Hi there,

first of all - a really great plugin!!

Since version 0.3.1 Text is not displayed while typing on web - only when I change the browser window size (which I guess initiates a set state).

This issue is also in the new 1.0.2 version

Can not insert newline when Bold is toggled ON.

Steps to reproduce:

1. Toggle ON bold
2. Press Enter

Expected result: The editor must insert a new line.

Actual result: nothing happened.

[Feature Request] Would like to work on Web Support for this plugin

As mentioned here, I would like to try and submit a PR to enable web support for this plugin

Multiple Errors on a new project with latest master for both iOS and Web

I just created a new project using the example from the package in the latest master (1.27.0-5.0.pre.92) and latest version (flutter_quill: ^0.2.12) but I'm getting the following errors (same errors in both iOS and Web):

../../.pub-cache/hosted/pub.dartlang.org/flutter_quill-0.2.12/lib/widgets/raw_editor.dart:110:7: Error: The non-abstract class 'RawEditorState' is missing implementations for these members:
 - TextSelectionDelegate.userUpdateTextEditingValue
Try to either
 - provide an implementation,
 - inherit an implementation from a superclass or mixin,
 - mark the class as abstract, or
 - provide a 'noSuchMethod' implementation.

class RawEditorState extends EditorState
      ^^^^^^^^^^^^^^
../../fvm/versions/master/packages/flutter/lib/src/services/text_input.dart:822:8: Context: 'TextSelectionDelegate.userUpdateTextEditingValue' is defined here.
  void userUpdateTextEditingValue(TextEditingValue value, SelectionChangedCause cause);
       ^^^^^^^^^^^^^^^^^^^^^^^^^^

../../.pub-cache/hosted/pub.dartlang.org/flutter_quill-0.2.12/lib/widgets/text_selection.dart:201:43: Error: Too few positional arguments: 8 required, 7 given.
        child: selectionCtrls.buildToolbar(
                                          ^
../../.pub-cache/hosted/pub.dartlang.org/flutter_quill-0.2.12/lib/widgets/text_line.dart:63:41: Error: No named parameter with the name 'nullOk'.
        Localizations.localeOf(context, nullOk: true),
                                        ^^^^^^
../../fvm/versions/master/packages/flutter/lib/src/widgets/localizations.dart:413:17: Context: Found this candidate, but the arguments don't match.

  static Locale localeOf(BuildContext context) {
                ^^^^^^^^
Failed to compile application.
Exited (sigterm)

I believe the nullOk error is related to this issue in flutter repo:
flutter/flutter#74519

Issues with the quill editor on Flutter Web 2.0

I am currently experiencing issues with the quill editor on Flutter 2.0. If I use the basic QuillEditor example from https://github.com/singerdmx/flutter-quill/blob/master/example/main.dart I can only type a few letters before the editor freezes. Unfortunately there are no console logs out of the ordinary I could post here, the editor just becomes unresponsive.
To reproduce the issues I am experiencing just run the example code (https://github.com/singerdmx/flutter-quill/blob/master/example/main.dart) in Flutter 2.0 on Chrome.

Flutter Doctor output:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.0.0, on Linux, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
[✓] Chrome - develop for the web
[!] Android Studio (not installed)
[✓] IntelliJ IDEA Community Edition (version 2020.3)
[✓] Connected device (1 available)

How to add custom Text Styles, Embed images from device storage?

I am porting my app from Zeyfr Editor to this wonderful plugin and I am stuck with a couple of problems.

1] How can I add custom styles to the text. I looked at QuillStyles() but didn't understand anything.

2] Whenever I open Notus document files (created by Zeyfr) with your package, it shows an error :
Invalid argument (key "heading" not found.): "heading".
Any idea how to fix it?

3] How can I embed images from device storage? My current implementation (not working) is this :

Future<String> uploadImageCallBack(File file) async {
    if (file == null) return null;
    return file.path;
}

Again Thank you for this wonderful package.

[WEB] Strange behavior when using keyboard left/right arrow to navigate in content

Expect to be:
Press arrow right/left once, move cursor once.

Actually:
Press keyboard right/left arrow once will move cursor twice.

Flutter Quill does not support "null safety"

I have been facing issue, when I run flutter Quill on my flutter web app

Please shift your package to null safety so that we can use it
Thank you For Helping

[web] Cursor error when click bold

Hello! I'm using your plugin on web and I found some bug.
v.0.2.2 (last for now).

1. Type some text. Cursor must be at end of text
2. Select bold, italic, etc...
   Expected result:
3. Cursor still at the end and next text become bold, italic, etc
   Actual result:
4. Cursor move at start of text but next typed text become bold, italic, etc and its position right on the end
5. And after that there is some strange behaviour about delete some letters, some times delete button delete 2 or more letters...

Newline character ("\n") takes a lot of space.

The newline character takes a lot of space and fills the entire screen pretty quickly.
In my opinion it should take as much space as the normal line in a paragraph does.
Right now it is taking twice as much.

The method 'findRenderObject' was called on null.

I found another Bug in Flutter-quill.

This is the error message:

I/flutter (32301): ══╡ EXCEPTION CAUGHT BY SCHEDULER LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (32301): The following NoSuchMethodError was thrown during a scheduler callback:
I/flutter (32301): The method 'findRenderObject' was called on null.
I/flutter (32301): Receiver: null
I/flutter (32301): Tried calling: findRenderObject()
I/flutter (32301): 
I/flutter (32301): When the exception was thrown, this was the stack:
I/flutter (32301): #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:54:5)
I/flutter (32301): #1      RawEditorState.getRenderEditor (package:flutter_quill/widgets/raw_editor.dart:1001:38)
I/flutter (32301): #2      RawEditorState._showCaretOnScreen.<anonymous closure> (package:flutter_quill/widgets/raw_editor.dart:977:50)
I/flutter (32301): #3      SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1144:15)
I/flutter (32301): #4      SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1090:9)
I/flutter (32301): #5      SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:998:5)
I/flutter (32301): #9      _invoke (dart:ui/hooks.dart:161:10)
I/flutter (32301): #10     PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:253:5)
I/flutter (32301): #11     _drawFrame (dart:ui/hooks.dart:120:31)
I/flutter (32301): (elided 3 frames from dart:async)

I'm not quite sure why this happens - maybe nullsafety (just a guess)? I'm on Flutter Channel beta, 2.0.0, on macOS 11.2.1 20D74 darwin-arm, locale de-DE.

Default keyboard has no auto-correction etc.

Hello!

Can I change the default keyboard type that Flutter Quill is using? It's current one seems quite strange.

The default keyboard doesn't seem to understand the language I'm typing in. In general, I'd expect to see auto-correction etc. as one does when types in a box.

In a Flutter textfield, I can specify a keyboard type to use with keyboardType: TextInputType.text,.

Searching this repo, I don't even find the word "keyboard".

Any advice appreciated!

Add variable font and variable font size.

Hello, currently I'm working on text editor which requires an option to change font and font-size.

According to this
QuillJs official doc
it supports "size" and "font".

do flutter-quill support that?

Null safety

Hi ! I'm hoping this issue can be used to follow updates on nullsafety. Currently, there are still several dependencies that are not migrated and might be considered blocking.

dart pub outdated --mode=null-safety

Showing dependencies that are currently not opted in to null-safety.
[✗] indicates versions without null safety support.
[✓] indicates versions opting in to null safety.

Package Name                 Current    Upgradable  Resolvable           Latest               

direct dependencies:        
file_picker                  ✗2.1.6     ✗2.1.6      ✓3.0.0-nullsafety.2  ✓3.0.0-nullsafety.2  
flutter_colorpicker          ✗0.3.5     ✗0.3.5      ✓0.4.0-nullsafety.0  ✓0.4.0-nullsafety.0  
flutter_keyboard_visibility  ✗4.0.4     ✗4.0.4      ✓5.0.0-nullsafety.2  ✓5.0.0-nullsafety.2  
image_picker                 ✗0.6.7+22  ✗0.6.7+22   ✓0.7.0               ✓0.7.0               
photo_view                   ✗0.10.3    ✗0.10.3     ✗0.10.3              ✗0.10.3              
quill_delta                  ✗2.0.0     ✗2.0.0      ✗2.0.0               ✗2.0.0               
quiver_hashcode              ✗2.0.0     ✗2.0.0      ✗2.0.0               ✗2.0.0               
string_validator             ✗0.1.4     ✗0.1.4      ✓0.2.0-nullsafety.0  ✓0.2.0-nullsafety.0  
tuple                        ✗1.0.3     ✗1.0.3      ✓2.0.0-nullsafety.0  ✓2.0.0-nullsafety.0  
universal_html               ✗1.2.4     ✗1.2.4      ✗1.2.4               ✗1.2.4               
url_launcher                 ✗5.7.10    ✗5.7.10     ✓6.0.0               ✓6.0.0               

7  dependencies are constrained to versions that are older than a resolvable version.
To update these dependencies, edit pubspec.yaml, or run `dart pub upgrade --null-safety`.

quill_delta has a active pull request for null safety here. photo_view also has an active pr for null safety. As for quiver_hashcode, here is a comment that says people should instead rely on quiver instead which is already migrated to null safety. This just leaves universal_html without an active PR.

Edit

With quill_delta removed that leaves just:

• photo_view
• quiver_hashcode -> quiver
• universal_html

Add Support for adding custom attributes.

Can we add Custom Attributes without editing the source? custom Attribute does not necessarily mean that it is a styling attribute. it can be a non-styling attribute as well.

How to get only String to Display it in TextField ?

This is not an issue. Just a doubt. I just store data from quill editor as json in sqflite database and retrieve it, show it in Text widget. But what happens, it shows unknown characters when image or something stored in data. when extracted through toPlainText() method.

So how to get only text which typed not any customizations. Thanks

Incompatibility flutter_quill with dio,validators - Important

Hello sir
I When
flutter_quill: ^1.0.5

I use with
dio: ^3.0.10
validators: ^2.0.1

It is inconsistent and I have a lot of problems, please solve it

Because flutter_quill >=1.0.1 depends on image_picker ^0.7.2 which depends on image_picker_platform_interface ^2.0.0, flutter_quill >=1.0.1 requires image_picker_platform_interface ^2.0.0.
And because image_picker_platform_interface >=2.0.0 depends on http ^0.13.0 which depends on http_parser ^4.0.0, flutter_quill >=1.0.1 requires http_parser ^4.0.0.
And because dio 3.0.10 depends on http_parser >=0.0.1 <4.0.0 and no versions of dio match >3.0.10 <4.0.0, flutter_quill >=1.0.1 is incompatible with dio ^3.0.10.
So, because myapp depends on both dio ^3.0.10 and flutter_quill ^1.0.5, version solving failed.
pub get failed (1; So, because myapp depends on both dio ^3.0.10 and flutter_quill ^1.0.5, version solving failed.)

This is a big problem for me, please help me as soon as possible
Thanks

How to upload to firebase and view them?

please add alignment and direction support for this great package

please add alignment and direction support for this great package

Links like tel:

Please remove the check for the correctness of the link when you click on it.
This check can and should be done in the onLaunchUrl handler

[web] Does flutter-quill support web application now?

Hi, @singerdmx I am a user from Zefyr package. I saw you actively answering the question there. Thank you, your answer helps me too. Since the Zefyr is not maintaining now.... ( is at dev 2.0) for a while... Initially, flutter-quill is not supporting the web, only on a mobile. Now it does🎉, I saw the tag under the package name and I am really glad to see that. I am wondering how does the package work on the web currently? Is it still in an early phase or it has all the basic functions working on the web as in mobile? Thanks again for the great package.👍

Bug: setState() called after dispose()

I found a bug when using QuillEditor inside a Stepper-Widget.

I also have a suggestion for fixing: After adding if (!mounted) return; before setState() inside raw_editor.dart in line 904 & 960 the issue did not come up again.

Here is the error message:
E/flutter (24393): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: setState() called after dispose(): RawEditorState#669f3(lifecycle state: defunct, not mounted, tickers: tracking 0 tickers) E/flutter (24393): This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback. E/flutter (24393): The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree. E/flutter (24393): This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose(). E/flutter (24393): #0 State.setState.<anonymous closure> (package:flutter/src/widgets/framework.dart:1231:9) E/flutter (24393): #1 State.setState (package:flutter/src/widgets/framework.dart:1266:6) E/flutter (24393): #2 RawEditorState._onChangeTextEditingValue (package:flutter_quill/widgets/raw_editor.dart:905:5) E/flutter (24393): #3 RawEditorState.initState.<anonymous closure> (package:flutter_quill/widgets/raw_editor.dart:704:9) E/flutter (24393): #4 _rootRunUnary (dart:async/zone.dart:1362:47) E/flutter (24393): #5 _CustomZone.runUnary (dart:async/zone.dart:1265:19) E/flutter (24393): #6 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7) E/flutter (24393): #7 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11) E/flutter (24393): #8 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:271:7) E/flutter (24393): #9 _SyncBroadcastStreamController._sendData (dart:async/broadcast_stream_controller.dart:378:25) E/flutter (24393): #10 _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:244:5) E/flutter (24393): #11 _AsBroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:475:11) E/flutter (24393): #12 _rootRunUnary (dart:async/zone.dart:1362:47) E/flutter (24393): #13 _CustomZone.runUnary (dart:async/zone.dart:1265:19) E/flutter (24393): #14 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7) E/flutter (24393): #15 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11) E/flutter (24393): #16 _DelayedData.perform (dart:async/stream_impl.dart:591:14) E/flutter (24393): #17 _StreamImplEvents.handleNext (dart:async/stream_impl.dart:706:11) E/flutter (24393): #18 _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:663:7) E/flutter (24393): #19 _rootRun (dart:async/zone.dart:1346:47) E/flutter (24393): #20 _CustomZone.run (dart:async/zone.dart:1258:19) E/flutter (24393): #21 _CustomZone.runGuarded (dart:async/zone.dart:1162:7) E/flutter (24393): #22 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23) E/flutter (24393): #23 _rootRun (dart:async/zone.dart:1354:13) E/flutter (24393): #24 _CustomZone.run (dart:async/zone.dart:1258:19) E/flutter (24393): #25 _CustomZone.runGuarded (dart:async/zone.dart:1162:7) E/flutter (24393): #26 _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23) E/flutter (24393): #27 _microtaskLoop (dart:async/schedule_microtask.dart:40:21) E/flutter (24393): #28 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)

[web] Some problems and weird effect on editing text

Hi, @singerdmx I give it a quick test and found some problems.

1. The backspace is not working as intended, it is deleting two characters at a time.

2. When typing and deleting the character several times the "enter" key to the new line will not trigger the first time and will go two lines in the second trigger. The backspace of going back a line will go back two lines at a time.

3. When mixing typing and deleting the character several times, the typing functionality will also not trigger the first time and will output two characters the second time. See the "rrrr" part at the end.

4. Changing text heading is not working as intended.

5. Does add a check box to the numbered line replace the number or add the check box after the number? Seems to add after the number works more logically (just my personal thoughts)?

6. Maybe adding a check box should disable some of the functionalities. For example, code block ...etc, cause it will cause some weird effect. Below are some demos.

7. Selecting of character through the cursor works fine. However, through keyboard "Shift+left arrow" is not working. Shift+right arrow is working.

Above are some problems I encounter after testing on the web application. Thank you for the hard work and make the package better!

Ken

UX Improvements

There are 3 areas where the UX of editor can be improved :

1. When checking / unchecking the checkboxes, the text line moves up / down.

2. Keyboard pops when clicking the heading dropdown button unnecessarily.

3. Tab button doesn't moves the text to the far right end and stops mid-way.

Question : Value

What's the best way to get the exact value from QuillEditor then save to firebase or something?

And also, how to display the exact value back from Firebase or some sort of backend?

I am using _controller.document.toPlainText(); and saving only simple string

Image attribute shows broken image icon when clicked

When I click the image rendered on the editor, it shows a broken image icon.

The _keyboardVisibilityController.onChange.listen should be close in dispose

使用push和pop二次（以及多次）打开编辑器后，会报错，_keyboardVisibilityController.onChange.listen回调会被调用多次，被调用的次数和编辑器打开的次数一致，在dispose中释放掉监听报错消失。

报错：

[VERBOSE-2:ui_dart_state.cc(177)] Unhandled Exception: setState() called after dispose(): RawEditorState#c3ee0(lifecycle state: defunct, not mounted, tickers: tracking 0 tickers)
This error happens if you call setState() on a State object for a widget that no longer appears in the widget tree (e.g., whose parent widget no longer includes the widget in its build). This error can occur when code calls setState() from a timer or an animation callback.
The preferred solution is to cancel the timer or stop listening to the animation in the dispose() callback. Another solution is to check the "mounted" property of this object before calling setState() to ensure the object is still in the tree.
This error might indicate a memory leak if setState() is being called because another object is retaining a reference to this State object after it has been removed from the tree. To avoid memory leaks, consider breaking the reference to this object during dispose().
#0      State.setState.<anonymous closure>
package:flutter/…/widgets/framework.dart:1208
#1      State.setState
package:flutter/…/widgets/framework.dart:1243
#2      RawEditorState._onChangeTextEditingValue
package:flutter_quill/widgets/raw_editor.dart:910
#3      RawEditorState.initState.<anonymous closure>
package:flutter_quill/widgets/raw_editor.dart:708
#4      _rootRunUnary (dart:async/zone.dart:1198:47)

改动：lib/widgets/raw_deitor.dart

StreamSubscription<bool> _keyboardVisibilitySubscription;

//initState()中
_keyboardVisibilityController = KeyboardVisibilityController();
    _keyboardVisibilitySubscription =
        _keyboardVisibilityController.onChange.listen((bool visible) {
      _keyboardVisible = visible;
      if (visible) {
        _onChangeTextEditingValue();
      }
    });

@override
  void dispose() {
    closeConnectionIfNeeded();
    _keyboardVisibilitySubscription.cancel();
....

Support conversion of Delta to HTML and Markdown

This Library converts Zeyfr documents to HTML.
There are many plugins that can help with the conversion of HTML to markdown. I was thinking that with some tweaking we can create our own converter too.

Or we can take another approach, we can first convert Delta to markdown like here and then to HTML.
Again, this requires just some minor tweaking.

type 'double' is not a subtype of type 'int'

Operation next([num length = double.infinity]) {
    assert(length != null);

    if (_modificationCount != delta._modificationCount) {
      throw ConcurrentModificationError(delta);
    }

    if (_index < delta.length) {
      final op = delta.elementAt(_index);
      final opKey = op.key;
      final opAttributes = op.attributes;
      final _currentOffset = _offset;
      final actualLength = math.min(op.length - _currentOffset, length);
      if (actualLength == op.length - _currentOffset) {
        _index++;
        _offset = 0;
      } else {
        _offset += actualLength;
      }
      final opData = op.isInsert && op.data is String
          ? (op.data as String)
              .substring(_currentOffset, _currentOffset + actualLength)
          : op.data;
      final opIsNotEmpty =
          opData is String ? opData.isNotEmpty : true; // embeds are never empty
      final opLength = opData is String ? opData.length : 1;
      final int opActualLength = opIsNotEmpty ? opLength : actualLength;
      return Operation._(opKey, opActualLength, opData, opAttributes);
    }
    return Operation.retain(length);
  }

next([num length = double.infinity]) length default is a double
but Operation.retain need a int

And assert(length != null); is useless

how to set placeholder?

hello, I don't know how to set placeholder, I don't find document and properties about it

Get and set the reading reading position of the editor

What is the best way to get (and then later set again) the current position the user has scrolled to? I have very long texts in my app and when the user starts reading, then closes the app and reopens it later again, the app should have "remembered" the reading progress and automatically scroll to the last position.
So in other words I need something like an index of the current visible part of the text.
Such a thing as the scroll position in pixels is not sufficient, because this would only be correct again on the same device, but e.g. wrong on the other devices of the user (the reading progress will be saved in the cloud in order to allow seamless reading across multiple devices).
An answer would be highly appreciated.

[web] Adding image in editor shows blank space

When I am adding image in editor in web, I see only blank space for image.

Cursor does not move to the next line when the [Enter] button is pressed.

In the flutter quill for web, this issue appears. However the new line gets appended. Cursor remains in the same position.