# Deprecate `SemanticsProperties.focusable` and `SemanticsConfiguration.isFocusable`

> The `focusable` parameter has been replaced by `isFocused`.




:::important
These breaking change docs are accurate, as of the release
under which they are published. Over time, the
workarounds described here might become inaccurate.
We don't, in general, keep these breaking change docs up
to date as of each release.

The [breaking change index file](/release/breaking-changes)
lists the docs created for each release.
:::


## Summary

The `SemanticsProperties.focusable` and `SemanticsConfiguration.isFocusable`
parameters were deprecated in favor of the `SemanticsProperties.focused` and
`SemanticsConfiguration.isFocused` parameters.

The `focused` parameter is now nullable.
Setting it to `true` or `false` automatically
sets `isFocusable` to `true`, while
setting it to `null` sets `isFocusable` to `false`.

## Context

The `SemanticsConfiguration.isFocusable` property is a boolean that
indicates whether the semantics node can have input focus.
`SemanticsConfiguration.isFocused` is a boolean that indicates if the
semantics node has input focus.

This change also applies to
`SemanticsProperties.focusable` and `SemanticsProperties.focused`.

We deprecated `isFocusable` because its functionality is covered by `isFocused`.
The `isFocused` property is now stored as a tristate flag in the engine,
and this change makes the framework consistent with the engine.

## Description of change

The `SemanticsConfiguration.isFocusable` property is
deprecated in favor of `SemanticsConfiguration.isFocused`.
This property is a nullable boolean; setting it to `true` or `false`
automatically sets `isFocusable` to `true`, and
setting it to `null` sets `isFocusable` to `false`.

## Migration guide

Replace `SemanticsConfiguration.isFocusable` with
`SemanticsConfiguration.isFocused`.

### Example 1: Setting `isFocused` to `true` automatically sets `isFocusable` to `true`

Code before migration:

```dart
void describeSemanticsConfiguration(SemanticsConfiguration config) {
  config.isFocusable = true;
  config.isFocused = true;
}
```

Code after migration:

```dart
void describeSemanticsConfiguration(SemanticsConfiguration config) {
  config.isFocused = true;
}
```

### Example 2: Setting `isFocused` to `null` automatically sets `isFocusable` to `false`

Code before migration:

```dart
void describeSemanticsConfiguration(SemanticsConfiguration config) {
  config.isFocusable = false;
  config.isFocused = false;
}
```

Code after migration:

```dart
void describeSemanticsConfiguration(SemanticsConfiguration config) {
  config.isFocused = null;
}
```


## Timeline

Landed in version: 3.37.0-0.0.pre<br>
In stable release: 3.38


## References

API documentation:

* [`SemanticsConfiguration`][]
* [`SemanticsProperties`][]
* [`SemanticsNode`][]

Relevant issue:

* [Issue 166092][]

Relevant PR:

* [PR 170935][]

[`SemanticsConfiguration`]: https://api.flutter.dev/flutter/semantics/SemanticsConfiguration-class.html
[`SemanticsProperties`]: https://api.flutter.dev/flutter/semantics/SemanticsProperties-class.html
[`SemanticsNode`]: https://api.flutter.dev/flutter/semantics/SemanticsNode-class.html
[Issue 166092]: https://github.com/flutter/flutter/issues/166092
[PR 170935]: https://github.com/flutter/flutter/pull/170935