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iOS UITextInput autocorrection prompt #13959

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merged 26 commits into from
Apr 7, 2020

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LongCatIsLooong
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Framework PR: flutter/flutter#45354

Notifies the framework when - (CGRect)firstRectForRange:(UITextRange*)range gets called.

Moved FlutterTextInputView to FlutterTextInputPlugin.h so it can be referenced in my xctest.

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LGTM 👍

@@ -0,0 +1,32 @@
// Copyright 2013 The Flutter Authors. All rights reserved.
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Should update the year to 2019.

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2013 is the correct/approved year to use for all copyright dates in the engine. This has the effect of minimising our LICENSES text.

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Whoops I have messed this up all over the place 😊 Thanks for the correction! I'll move these back to 2013 when I see them.

engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 8, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 9, 2020
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 10, 2020
goderbauer pushed a commit to goderbauer/engine that referenced this pull request Apr 16, 2020
auto-submit bot pushed a commit that referenced this pull request Aug 2, 2023
)

This PR disables the "auto-correction highlight" feature in iOS 17. 

This feature was introduced in flutter/flutter#45354 and #13959 (CC: @LongCatIsLooong who was the original author)

I have created [a new issue](flutter/flutter#131622) to find other approaches to re-enable this feature. 

**Note that "auto-correction" itself still works, it's only the "highlight" part is disabled:**

- iOS 16 with highlight:
https://github.com/flutter/engine/assets/41930132/2fe7bbf6-f2db-4212-a020-e420ad8dd5e6

- iOS 17 without highlight:
https://github.com/flutter/engine/assets/41930132/34f34743-6bef-4e93-80d2-d04c92ba59bf

## Why disable this feature?

The original PR uses `UITextInput::firstRectForRange` API for auto-correction, since Apple does not provide any other API when auto-correction should show up, so the original PR used this API as a workaround. 

In iOS 17, Apple changed a few `UITextInput` behaviors:  
- UIKit does not query `UITextInput::firstRectForRange` for text range of the auto-corrected word any more. 
- But instead, it repeatedly queries every single character of the current word (after entering or deleting a character), regardless whether the word should be auto-corrected or not. 

I have tried all other `UITextInput` APIs that takes a text range, and none are suitable for auto-correction feature. As a result, I have to disable this feature for iOS 17 for now. 

*List which issues are fixed by this PR. You must list at least one issue.*

Fixes flutter/flutter#128406

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
gaaclarke pushed a commit to gaaclarke/engine that referenced this pull request Aug 30, 2023
…tter#44176)

This PR disables the "auto-correction highlight" feature in iOS 17. 

This feature was introduced in flutter/flutter#45354 and flutter#13959 (CC: @LongCatIsLooong who was the original author)

I have created [a new issue](flutter/flutter#131622) to find other approaches to re-enable this feature. 

**Note that "auto-correction" itself still works, it's only the "highlight" part is disabled:**

- iOS 16 with highlight:
https://github.com/flutter/engine/assets/41930132/2fe7bbf6-f2db-4212-a020-e420ad8dd5e6

- iOS 17 without highlight:
https://github.com/flutter/engine/assets/41930132/34f34743-6bef-4e93-80d2-d04c92ba59bf

## Why disable this feature?

The original PR uses `UITextInput::firstRectForRange` API for auto-correction, since Apple does not provide any other API when auto-correction should show up, so the original PR used this API as a workaround. 

In iOS 17, Apple changed a few `UITextInput` behaviors:  
- UIKit does not query `UITextInput::firstRectForRange` for text range of the auto-corrected word any more. 
- But instead, it repeatedly queries every single character of the current word (after entering or deleting a character), regardless whether the word should be auto-corrected or not. 

I have tried all other `UITextInput` APIs that takes a text range, and none are suitable for auto-correction feature. As a result, I have to disable this feature for iOS 17 for now. 

*List which issues are fixed by this PR. You must list at least one issue.*

Fixes flutter/flutter#128406

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style
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