Add dropdown with auto translate language excludes to app settings

Persist changes to settings

TODO:
Load actually excluded languages
Optimise code
Improve UI

amethyst/src/main/java/com/vitorpamplona/amethyst/model/Settings.kt

@@ -27,6 +27,7 @@ import com.vitorpamplona.amethyst.R
 data class Settings(
     val theme: ThemeType = ThemeType.SYSTEM,
     val preferredLanguage: String? = null,
+    val dontTranslateFrom: Set<String> = emptySet(),
     val automaticallyShowImages: ConnectivityType = ConnectivityType.ALWAYS,
     val automaticallyStartPlayback: ConnectivityType = ConnectivityType.ALWAYS,
     val automaticallyShowUrlPreview: ConnectivityType = ConnectivityType.ALWAYS,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/SharedPreferencesViewModel.kt

@@ -52,6 +52,7 @@ class SharedPreferencesViewModel : ViewModel() {
 
             sharedPrefs.theme = savedSettings.theme
             sharedPrefs.language = savedSettings.preferredLanguage
+            sharedPrefs.dontTranslateFrom = savedSettings.dontTranslateFrom
             sharedPrefs.automaticallyShowImages = savedSettings.automaticallyShowImages
             sharedPrefs.automaticallyStartPlayback = savedSettings.automaticallyStartPlayback
             sharedPrefs.automaticallyShowUrlPreview = savedSettings.automaticallyShowUrlPreview
@@ -82,6 +83,22 @@ class SharedPreferencesViewModel : ViewModel() {
         }
     }
 
+    fun addDontTranslateFrom(languageCode: String) {
+        val newSet = sharedPrefs.dontTranslateFrom.plus(languageCode)
+        if (newSet != sharedPrefs.dontTranslateFrom) {
+            sharedPrefs.dontTranslateFrom = newSet
+            saveSharedSettings()
+        }
+    }
+
+    fun removeDontTranslateFrom(languageCode: String) {
+        val newSet = sharedPrefs.dontTranslateFrom.minus(languageCode)
+        if (newSet != sharedPrefs.dontTranslateFrom) {
+            sharedPrefs.dontTranslateFrom = newSet
+            saveSharedSettings()
+        }
+    }
+
     fun updateLanguageInTheUI() {
         if (sharedPrefs.language != null) {
             viewModelScope.launch(Dispatchers.Main) {
@@ -188,6 +205,7 @@ class SharedPreferencesViewModel : ViewModel() {
                 Settings(
                     sharedPrefs.theme,
                     sharedPrefs.language,
+                    sharedPrefs.dontTranslateFrom,
                     sharedPrefs.automaticallyShowImages,
                     sharedPrefs.automaticallyStartPlayback,
                     sharedPrefs.automaticallyShowUrlPreview,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/SharedSettingsState.kt

@@ -38,7 +38,7 @@ import com.vitorpamplona.amethyst.model.ThemeType
 class SharedSettingsState {
     var theme by mutableStateOf(ThemeType.SYSTEM)
     var language by mutableStateOf<String?>(null)
-
+    var dontTranslateFrom by mutableStateOf<Set<String>>(emptySet())
     var automaticallyShowImages by mutableStateOf(ConnectivityType.ALWAYS)
     var automaticallyStartPlayback by mutableStateOf(ConnectivityType.ALWAYS)
     var automaticallyShowUrlPreview by mutableStateOf(ConnectivityType.ALWAYS)

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/settings/AppSettingsScreen.kt

@@ -32,10 +32,22 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Clear
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.ExposedDropdownMenuDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -77,6 +89,7 @@ import kotlinx.collections.immutable.toImmutableMap
 import org.xmlpull.v1.XmlPullParser
 import org.xmlpull.v1.XmlPullParserException
 import java.io.IOException
+import java.util.Locale as JavaLocale
 
 fun Context.getLocaleListFromXml(): LocaleListCompat {
     val tagsList = mutableListOf<CharSequence>()
@@ -233,6 +246,10 @@ fun SettingsScreen(sharedPreferencesViewModel: SharedPreferencesViewModel) {
 
         Spacer(modifier = HalfVertSpacer)
 
+        DontTranslateFromSetting(sharedPreferencesViewModel, languageEntries)
+
+        Spacer(modifier = HalfVertSpacer)
+
         SettingsRow(
             R.string.theme,
             R.string.theme_description,
@@ -322,6 +339,78 @@ fun SettingsScreen(sharedPreferencesViewModel: SharedPreferencesViewModel) {
     }
 }
 
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun DontTranslateFromSetting(
+    sharedPreferencesViewModel: SharedPreferencesViewModel,
+    languageEntries: ImmutableMap<String, String>,
+) {
+    var expanded by remember { mutableStateOf(false) }
+    val selectedLanguages = sharedPreferencesViewModel.sharedPrefs.dontTranslateFrom
+
+    Column {
+        SettingsRow(
+            name = R.string.dont_translate_from,
+            description = R.string.dont_translate_from_description,
+        ) {
+            ExposedDropdownMenuBox(
+                expanded = expanded,
+                onExpandedChange = { expanded = !expanded },
+            ) {
+                OutlinedTextField(
+                    value = stringRes(R.string.add_a_language),
+                    onValueChange = {},
+                    readOnly = true,
+                    trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
+                    modifier = Modifier.menuAnchor(),
+                )
+
+                ExposedDropdownMenu(
+                    expanded = expanded,
+                    onDismissRequest = { expanded = false },
+                ) {
+                    languageEntries.forEach { (displayName, languageCode) ->
+                        if (!selectedLanguages.contains(languageCode)) {
+                            DropdownMenuItem(
+                                text = { Text(text = displayName) },
+                                onClick = {
+                                    sharedPreferencesViewModel.addDontTranslateFrom(languageCode)
+                                    expanded = false
+                                },
+                            )
+                        }
+                    }
+                }
+            }
+        }
+
+        selectedLanguages.forEach { languageCode ->
+            val displayName =
+                languageEntries.entries.find { it.value == languageCode }?.key
+                    ?: JavaLocale.forLanguageTag(languageCode).displayName
+            Row(
+                verticalAlignment = Alignment.CenterVertically,
+                modifier =
+                    Modifier
+                        .fillMaxWidth()
+                        .padding(vertical = Size10dp),
+            ) {
+                Text(
+                    text = displayName,
+                    modifier = Modifier.weight(1f),
+                )
+                IconButton(onClick = { sharedPreferencesViewModel.removeDontTranslateFrom(languageCode) }) {
+                    Icon(
+                        imageVector = Icons.Default.Clear,
+                        contentDescription = stringRes(R.string.remove),
+                        tint = MaterialTheme.colorScheme.onSurface,
+                    )
+                }
+            }
+        }
+    }
+}
+
 @Composable
 fun SettingsRow(
     name: Int,

amethyst/src/main/res/values/strings.xml

@@ -1178,4 +1178,8 @@
     <string name="share_image">Share image…</string>
 
     <string name="search_by_hashtag">Search hashtag: #%1$s</string>
+
+    <string name="dont_translate_from">Don\'t Translate From</string>
+    <string name="dont_translate_from_description">Languages selected here will not be translated</string>
+    <string name="add_a_language">Add a language</string>
 </resources>