feat: Add state error on MixWidgetState

[tilucasoli]

Description

• Add a new state to MixWidgetState called error.

Changes

• Add the new state and update some tests

Review Checklist

• Testing: Have you tested your changes, including unit tests and integration tests for affected code?
• Breaking Changes: Does this change introduce breaking changes affecting existing code or users?
• Documentation Updates: Are all relevant documentation files (e.g. README, API docs) updated to reflect the changes in this PR?
• Website Updates: Is the website containing the updates you make on documentation?

Additional Information (optional)

class ExampleButton extends StatefulWidget {
  const ExampleButton({super.key});

  @override
  State<ExampleButton> createState() => _ExampleButtonState();
}

class _ExampleButtonState extends State<ExampleButton> {
  late final MixWidgetStateController controller;

  @override
  void initState() {
    super.initState();
    controller = MixWidgetStateController();
  }

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Pressable(
      onPress: () => controller.error = true,
      controller: controller,
      child: Box(
        style: Style(
          $box.chain
            ..padding.horizontal(16)
            ..padding.vertical(12)
            ..border.all(color: Colors.black)
            ..border.all(color: Colors.black)
            ..borderRadius.circular(8)
            ..color.white.shade(3)
            ..shadow.color(Colors.black)
            ..shadow.offset(2, 4),
          $on.error(
            $box.chain
              ..border.all(color: Colors.red)
              ..shadow.color(Colors.red),
            $text.style.color.red(),
          ),
          $text.style.bold(),
        ),
        child: const StyledText('Click me'),
      ),
    );
  }
}

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1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
mix-docs	⬜️ Ignored (Inspect)			Sep 26, 2024 6:05pm

[leoafarias]

LGTM