Use localized strings for UI mode dialog.

res/values/strings.xml

@@ -1855,4 +1855,9 @@
 
     <string name="view_reset_secure_session_done_message">Secure session reset done</string>
 
+    <string name="dialog_ui_mode_title">Application theme</string>
+    <string name="dialog_ui_mode_option_day">Day</string>
+    <string name="dialog_ui_mode_option_night">Night</string>
+    <string name="dialog_ui_mode_option_system_default">System default</string>
+
 </resources>

src/org/thoughtcrime/securesms/loki/dialogs/ChangeUiModeDialog.kt

@@ -4,10 +4,10 @@ import android.app.Dialog
 import android.os.Bundle
 import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.DialogFragment
+import network.loki.messenger.R
 import org.thoughtcrime.securesms.loki.utilities.UiMode
 import org.thoughtcrime.securesms.loki.utilities.UiModeUtilities
 
-//TODO Use localized string resources.
 class ChangeUiModeDialog : DialogFragment() {
 
     companion object {
@@ -17,7 +17,7 @@ class ChangeUiModeDialog : DialogFragment() {
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
         val context = requireContext()
 
-        val displayNameList = UiMode.values().map { it.displayName }.toTypedArray()
+        val displayNameList = UiMode.values().map { getString(it.displayNameRes) }.toTypedArray()
         val activeUiMode = UiModeUtilities.getUserSelectedUiMode(context)
 
         return AlertDialog.Builder(context)
@@ -27,8 +27,8 @@ class ChangeUiModeDialog : DialogFragment() {
                     dismiss()
                     requireActivity().recreate()
                 }
-                .setTitle("Application theme")
-                .setNegativeButton("Cancel") { _, _ -> dismiss() }
+                .setTitle(R.string.dialog_ui_mode_title)
+                .setNegativeButton(R.string.cancel) { _, _ -> dismiss() }
                 .create()
     }
 }

src/org/thoughtcrime/securesms/loki/utilities/UiModeUtilities.kt

@@ -2,8 +2,10 @@ package org.thoughtcrime.securesms.loki.utilities
 
 import android.content.Context
 import android.content.res.Configuration
+import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.preference.PreferenceManager
+import network.loki.messenger.R
 
 /**
  * Day/night UI mode related utilities.
@@ -52,12 +54,12 @@ object UiModeUtilities {
     }
 }
 
-//TODO Use localized string resources.
 enum class UiMode(
-        val displayName: String,
+        @StringRes
+        val displayNameRes: Int,
         val nightModeValue: Int) {
 
-    DAY("Day", AppCompatDelegate.MODE_NIGHT_NO),
-    NIGHT("Night", AppCompatDelegate.MODE_NIGHT_YES),
-    SYSTEM_DEFAULT("System default", AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
+    DAY(R.string.dialog_ui_mode_option_day, AppCompatDelegate.MODE_NIGHT_NO),
+    NIGHT(R.string.dialog_ui_mode_option_night, AppCompatDelegate.MODE_NIGHT_YES),
+    SYSTEM_DEFAULT(R.string.dialog_ui_mode_option_system_default, AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
 }