This still leaves some deprecated APIs, but at least it builds ands seems to work. Bonus: also adds a macOS app to the example (used that for testing).

Most of this work is done by the migration tool, but had to tweak a few things here and there. It's possible more things have been marked as non-nullable than should be, please check.

Hello

I have noticed that text manipulation gestures do not seem to work on Android. For example, double tapping a word on the default material TextField highlights that word. On a CodeTextField, the cursor just moves to the beginning of the word without highlighting it. Similarly, tapping and holding a word does nothing but move the cursor to the beginning.

Also, this may be Android related only, but on some keyboards there are text gestures such as: Sliding across the spacebar to move the cursor and dragging the backspace to the left to delete multiple words. The functionality works (sliding the the spacebar does move the cursor's underlying position, and sliding the backspace does delete multiple words) however there's no visual feedback.

Sliding backspace should highlight words-to-be-deleted before it deletes them, and sliding across the spacebar should move the blinking cursor as its position is being changed.

I was using my own Highlighter, but tested with the provided DummyHighlighter and the behaviour is still missing. Any thoughts?

Thanks for the great work by the way!

rich_code_editor version: 0.2.9 flutter version: 1.7.8+hotfix 3 device: Pixel 2XL running Android 10 (QP1A. 191105)

flutter doctor -v:

PS C:\Development\Flutter\project> flutter doctor -v
[√] Flutter (Channel stable, v1.7.8+hotfix.3, on Microsoft Windows [Version 10.0.18362.476], locale en-GB)
    • Flutter version 1.7.8+hotfix.3 at C:\sdk\flutter
    • Framework revision b712a172f9 (5 months ago), 2019-07-09 13:14:38 -0700
    • Engine revision 54ad777fd2
    • Dart version 2.4.0


[!] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at C:\Program Files (x86)\Android\android-sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: c:\programdata\Oracle\Java\javapath\java.exe
    • Java version Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor --android-licenses

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/setup/#android-setup for detailed instructions).

[√] VS Code (version 1.40.1)
    • VS Code at C:\Users\Faris\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.6.0

[√] Connected device (1 available)
    • Pixel 2 XL • 711KPPB0677296 • android-arm64 • Android 10 (API 29)

! Doctor found issues in 2 categories.

Edit

So I dug a bit into the code and found that the library has its own implementation of TextSelectionControls, and nothing but Paste is supported, how come? What's the reason behind this?

Error: The non-abstract class 'RichCodeEditingController' is missing implementations for these members:
 - TextEditingController.isSelectionWithinTextBounds
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 RichCodeEditingController extends ValueNotifier<TextEditingValue> implements TextEditingController {
      ^^^^^^^^^^^^^^^^^^^^^^^^^
/D:/flutter/packages/flutter/lib/src/widgets/editable_text.dart:225:8: Context: 'TextEditingController.isSelectionWithinTextBounds' is defined `here.`
  bool isSelectionWithinTextBounds(TextSelection selection) {
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^``

/C:/package/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-1.0.0/lib/rich_code_controller.dart:6:7: Error: The non-abstract class 'RichCodeEditingController' is missing implementations for these members:

• TextEditingController.isSelectionWithinTextBounds 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 RichCodeEditingController extends ValueNotifier implements TextEditingController { ^^^^^^^^^^^^^^^^^^^^^^^^^ /C:/package/flutter/packages/flutter/lib/src/widgets/editable_text.dart:229:8: Context: 'TextEditingController.isSelectionWithinTextBounds' is defined here.

bool isSelectionWithinTextBounds(TextSelection selection) { ^^^^^^^^^^^^^^^^^^^^^^^^^^^ /C:/package/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-1.0.0/lib/rich_editable_code.dart:1617:34: Error: Too few positional arguments: 2 required, 1 given. ? () => controls.handleCopy(this) ^ /C:/package/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-1.0.0/lib/rich_editable_code.dart:1705:29: Error: Getter not found: 'obscuringCharacter'. text = RenderEditable.obscuringCharacter * text.length; ^^^^^^^^^^^^^^^^^^ 2

FAILURE: Build failed with an exception.

Compiler message:
../../../../soft/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-0.2.8/lib/code_editor/widgets/code_editable_text.dart:1388:11: Error: Getter not found: 'kMinInteractiveSize'.
          kMinInteractiveSize,
          ^^^^^^^^^^^^^^^^^^^
../../../../soft/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-0.2.8/lib/code_editor/widgets/code_editable_text.dart:1388:11: Error: The getter 'kMinInteractiveSize' isn't defined for the class 'CodeEditableTextState'.
 - 'CodeEditableTextState' is from 'package:rich_code_editor/code_editor/widgets/code_editable_text.dart' ('../../../../soft/flutter/.pub-cache/hosted/pub.dartlang.org/rich_code_editor-0.2.8/lib/code_editor/widgets/code_editable_text.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'kMinInteractiveSize'.
          kMinInteractiveSize,
          ^^^^^^^^^^^^^^^^^^^

I/flutter (30091): Receiver: null
I/flutter (30091): Tried calling: hasFloatingPlaceholder
I/flutter (30091): 
I/flutter (30091): User-created ancestor of the error-causing widget was:
I/flutter (30091):   CodeTextField
I/flutter (30091): 
I/flutter (30091): When the exception was thrown, this was the stack:
I/flutter (30091): #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:50:5)
I/flutter (30091): #1      _InputDecoratorState.initState (package:flutter/src/material/input_decorator.dart:1851:33)
I/flutter (30091): #2      StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4060:58)
I/flutter (30091): #3      ComponentElement.mount (package:flutter/src/widgets/framework.dart:3911:5)
I/flutter (30091): #4      Element.inflateWidget (package:flutter/src/widgets/framework.dart:3093:14)
I/flutter (30091): #5      Element.updateChild (package:flutter/src/widgets/framework.dart:2896:12)
...

Flutter doctor output:

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel beta, v1.8.3, on Microsoft Windows [Version 10.0.18362.295], locale en-GB)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.1)
[√] Android Studio (version 3.4)
[√] Android Studio (version 3.5)
[!] IntelliJ IDEA Ultimate Edition (version 2019.1)
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
[√] Connected device (1 available)

! Doctor found issues in 1 category.

I am trying to manipulate this so that the code does NOT wrap automatically, and instead overflows horizontally so that a user can scroll horizontally.

While editing a huge chunk of code, the editor becomes quite slow, probably due to the fact that on every keyPress/change, the syntax highlighting is recalculated for the whole text.