[fenix] Fix rest of issues

app/src/main/java/org/mozilla/fenix/settings/account/AccountSettingsFragment.kt

@@ -7,6 +7,7 @@ package org.mozilla.fenix.settings.account
 import android.os.Bundle
 import android.text.InputFilter
 import android.text.format.DateUtils
+import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
@@ -72,6 +73,22 @@ class AccountSettingsFragment : PreferenceFragmentCompat() {
         requireComponents.analytics.metrics.track(Event.SyncAccountClosed)
     }
 
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        consumeFrom(accountSettingsStore) {
+            updateLastSyncTimePref(it)
+            updateDeviceName(it)
+        }
+
+        accountSettingsInteractor = AccountSettingsInteractor(
+            findNavController(),
+            ::syncNow,
+            ::syncDeviceName,
+            accountSettingsStore
+        )
+    }
+
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.account_settings_preferences, rootKey)
 
@@ -88,22 +105,9 @@ class AccountSettingsFragment : PreferenceFragmentCompat() {
             )
         }
 
-        consumeFrom(accountSettingsStore) {
-            updateLastSyncTimePref(it)
-            updateDeviceName(it)
-        }
-
         accountManager = requireComponents.backgroundServices.accountManager
         accountManager.register(accountStateObserver, this, true)
 
-        accountSettingsInteractor = AccountSettingsInteractor(
-            findNavController(),
-            ::syncNow,
-            ::checkValidName,
-            ::syncDeviceName,
-            accountSettingsStore
-        )
-
         // Sign out
         val signOut = context!!.getPreferenceKey(R.string.pref_key_sign_out)
         val preferenceSignOut = findPreference<Preference>(signOut)
@@ -161,18 +165,10 @@ class AccountSettingsFragment : PreferenceFragmentCompat() {
         }
     }
 
-    private fun checkValidName(newValue: String): Boolean {
+    private fun syncDeviceName(newValue: String): Boolean {
-        // The network request requires a nonempty string, so don't persist any changes if the user inputs one.
         if (newValue.trim().isEmpty()) {
-            FenixSnackbar.make(view!!, FenixSnackbar.LENGTH_LONG)
-                .setText(getString(R.string.empty_device_name_error))
-                .show()
             return false
         }
-        return true
-    }
-
-    private fun syncDeviceName(newValue: String) {
         // This may fail, and we'll have a disparity in the UI until `updateDeviceName` is called.
         lifecycleScope.launch(Main) {
             accountManager.authenticatedAccount()
@@ -180,6 +176,7 @@ class AccountSettingsFragment : PreferenceFragmentCompat() {
                 ?.setDeviceNameAsync(newValue)
                 ?.await()
         }
+        return true
     }
 
     private fun getClickListenerForSignOut(): Preference.OnPreferenceClickListener {
@@ -198,7 +195,11 @@ class AccountSettingsFragment : PreferenceFragmentCompat() {
 
     private fun getChangeListenerForDeviceName(): Preference.OnPreferenceChangeListener {
         return Preference.OnPreferenceChangeListener { _, newValue ->
-            accountSettingsInteractor.onChangeDeviceName(newValue as String)
+            accountSettingsInteractor.onChangeDeviceName(newValue as String) {
+                FenixSnackbar.make(view!!, FenixSnackbar.LENGTH_LONG)
+                .setText(getString(R.string.empty_device_name_error))
+                .show()
+            }
         }
     }
 

app/src/main/java/org/mozilla/fenix/settings/account/AccountSettingsInteractor.kt

@@ -20,7 +20,7 @@ interface AccountSettingsUserActions {
      * @param newDeviceName the device name to change to
      * @return Boolean indicating whether the new device name has been accepted or not
      */
-    fun onChangeDeviceName(newDeviceName: String): Boolean
+    fun onChangeDeviceName(newDeviceName: String, invalidNameResponse: () -> Unit): Boolean
 
     /**
      * Called whenever the "Sign out" button is tapped
@@ -31,8 +31,7 @@ interface AccountSettingsUserActions {
 class AccountSettingsInteractor(
     private val navController: NavController,
     private val syncNow: () -> Unit,
-    private val checkValidName: (String) -> Boolean,
+    private val syncDeviceName: (String) -> Boolean,
-    private val setDeviceName: (String) -> Unit,
     private val store: AccountSettingsStore
 ) : AccountSettingsUserActions {
 
@@ -40,9 +39,9 @@ class AccountSettingsInteractor(
         syncNow.invoke()
     }
 
-    override fun onChangeDeviceName(newDeviceName: String): Boolean {
+    override fun onChangeDeviceName(newDeviceName: String, invalidNameResponse: () -> Unit): Boolean {
-        val isValidName = checkValidName.invoke(newDeviceName)
+        if (!syncDeviceName(newDeviceName)) {
-        if (!isValidName) {
+            invalidNameResponse.invoke()
             return false
         }
         // Our "change the device name on the server" operation may fail.
@@ -53,7 +52,6 @@ class AccountSettingsInteractor(
         // So, when user presses "sync now", we'll fetch the old value, and reset the UI.
         store.dispatch(AccountSettingsAction.UpdateDeviceName(newDeviceName))
 
-        setDeviceName.invoke(newDeviceName)
         return true
     }