:core:ui/dev.atick.core.ui.utils/TextFiledData

TextFiledData

data class TextFiledData(val value: String, val errorMessage: String? = null)

Represents the state of a text input field with optional validation error.

This data class is designed to work within the UiState wrapper pattern, providing a clean way to manage text field state and validation errors. It's commonly used in screen data classes to represent form inputs.

Usage in Screen Data

data class LoginScreenData(
    val email: TextFiledData = TextFiledData(""),
    val password: TextFiledData = TextFiledData("")
)

Usage in ViewModel

@HiltViewModel
class LoginViewModel @Inject constructor(
    private val authRepository: AuthRepository
) : ViewModel() {
    private val _uiState = MutableStateFlow(UiState(LoginScreenData()))
    val uiState = _uiState.asStateFlow()

    fun updateEmail(email: String) {
        _uiState.updateState {
            copy(email = TextFiledData(email, validateEmail(email)))
        }
    }

    private fun validateEmail(email: String): String? {
        return when {
            email.isBlank() -> "Email cannot be empty"
            !email.isValidEmail() -> "Invalid email format"
            else -> null
        }
    }
}

Usage in Composable

@Composable
fun LoginScreen(
    screenData: LoginScreenData,
    onEmailChange: (String) -> Unit
) {
    OutlinedTextField(
        value = screenData.email.value,
        onValueChange = onEmailChange,
        label = { Text("Email") },
        isError = screenData.email.errorMessage != null,
        supportingText = screenData.email.errorMessage?.let { { Text(it) } }
    )
}

With UiText for Type-Safe Errors

data class TextFiledData(
    val value: String,
    val errorMessage: UiText? = null  // Use UiText instead of String
)

// In Composable:
supportingText = screenData.email.errorMessage?.let { error ->
    { Text(error.asString()) }
}