Weird behaviour on pressing 'Enter' in an extended_text_field

[aasaanapps]

On pressing 'Enter' to insert a newline character to the text, the '\n' is inserted to text but the cursor does not move to the next line. It stays on the same line and moves one character back, which was kind of weird. Can you please look into the issue?

The example used is - TextSelectionControls

[zmtzawqlp]

does it happen in official TextField, it's better to provide a runable demo for this

[aasaanapps]

I am using the example provided in the repo. PFA the code I am running as a flutter project.
In example 1 & 3, if you press 'Enter', the cursor does not move to the next line.
In example 2, at first the cursor moves to the next line when pressing enter, but after inserting an emoji it behaves similar to example 1&3.

issue_text_field.zip

[aasaanapps]

The official TextField is working fine. Please find the source code of official text field example below.

simple_text_field.zip

[zmtzawqlp]

this is refer to flutter/flutter#35869
try to do selection with widgetspan, but _textPainter.getOffsetForCaret return Offset.zero when textspan has widgetspans, could you please report to flutter team about it?

getOffsetForCaret is not right for widgetspan, so i use getBoxesForSelection but it seems that it's not good for "\n"

[zmtzawqlp]

flutter/flutter#38474 wait for flutter team to add support

[aasaanapps]

Thanks for the quick reply :) will surely wait for them to add support.

[zmtzawqlp]

i have do a workaround about this issue in extended_text_library, please run packages get, make sure extended_text_library is 0.4.9 version. please tell me if it works.

[aasaanapps]

Nope it is still failing. I updated extended_text_library and tried it for Example 1. custom toolbar.
When I type a few words in the last line and pressed 'Enter' the cursor strangely moved back by 2 characters instead of going to the next line.

  extended_text_library:
    dependency: "direct main"
    description:
      name: extended_text_library
      url: "https://pub.dartlang.org"
    source: hosted
    version: "0.4.9"

[zmtzawqlp]

I could't reproduce, which flutter sdk do you use? i'm in 1.9.5

[aasaanapps]

I am using the stable version v1.7.8+hotfix.4

[zmtzawqlp]

gif to reproduce it, will helpful if you have a time

[aasaanapps]

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.7.8+hotfix.4, on Microsoft Windows [Version 10.0.18362.295], locale en-US)

[√] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
[√] Android Studio (version 3.4)
[√] VS Code (version 1.37.1)
[!] Connected device
! No devices available

[aasaanapps]

sure I will make a gif.

[aasaanapps]

Might be some issue with caching .. I closed everything .. opened the project again .. did a pub get again .. and ran the project .. the issue is no longer there (weird!).

Thanks for the fix. Cheers!

[zmtzawqlp]

I'm glad to solve it with workaround for now, let us await for official fixing of widgetspan