Allow unmasking when the original password was removed/replaced

import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL

import androidx.biometric.BiometricPrompt

import androidx.core.content.ContextCompat

import androidx.core.widget.doOnTextChanged

import androidx.fragment.app.FragmentActivity

import androidx.lifecycle.DefaultLifecycleObserver

import androidx.lifecycle.LifecycleOwner

    val editText = this.editText ?: error("TextInputLayout.editText == null")

    editText.doOnTextChanged { text, _, before, count ->

        // Check if the password field is empty or if all of the previous text was replaced

        if (text != null && before > 0 && (text.isEmpty() || text.length - count == 0)) {

            viewModel.isNewPassword = true

        }

    }

    setEndIconOnClickListener {

        if (editText.isPasswordHidden) {

            if (viewModel.isAuthenticated) {

            if (viewModel.isShowPasswordAllowed) {

                activity.setSecure(true)

                editText.showPassword()

            } else {

@SuppressLint("StaticFieldLeak")

class AuthenticatedPasswordToggleViewModel : ViewModel() {

    val isShowPasswordAllowed: Boolean

        get() = isAuthenticated || isNewPassword

    var isNewPassword = false

    var isAuthenticated = false

    var textInputLayout: TextInputLayout? = null

    var activity: FragmentActivity? = null