add dictionary screen and dialogs

app/src/main/java/helium314/keyboard/latin/settings/LanguageSettingsDialog.kt

@@ -389,7 +389,7 @@ class LanguageSettingsDialog(
 }
 
 /** @return list of user dictionary files and whether an internal dictionary exists */
-fun getUserAndInternalDictionaries(context: Context, locale: Locale): Pair<List<File>, Boolean> {
+private fun getUserAndInternalDictionaries(context: Context, locale: Locale): Pair<List<File>, Boolean> {
     val userDicts = mutableListOf<File>()
     var hasInternalDict = false
     val userLocaleDir = File(DictionaryInfoUtils.getCacheDirectoryForLocale(locale, context))

app/src/main/java/helium314/keyboard/latin/utils/DictionaryUtils.kt

@@ -15,8 +15,7 @@ import helium314.keyboard.latin.common.LocaleUtils.constructLocale
 import helium314.keyboard.latin.settings.Defaults
 import helium314.keyboard.latin.settings.Settings
 import java.io.File
-import java.util.*
+import java.util.Locale
-import kotlin.collections.HashSet
 
 fun getDictionaryLocales(context: Context): MutableSet<Locale> {
     val locales = HashSet<Locale>()

app/src/main/java/helium314/keyboard/settings/FilePicker.kt

@@ -16,9 +16,13 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import helium314.keyboard.latin.R
+import helium314.keyboard.latin.common.FileUtils
 import helium314.keyboard.latin.utils.LayoutUtilsCustom
 import helium314.keyboard.latin.utils.getActivity
 import helium314.keyboard.settings.dialogs.InfoDialog
+import helium314.keyboard.settings.dialogs.NewDictionaryDialog
+import java.io.File
+import java.util.Locale
 
 val layoutIntent = Intent(Intent.ACTION_OPEN_DOCUMENT)
     .addCategory(Intent.CATEGORY_OPENABLE)
@@ -59,3 +63,22 @@ fun layoutFilePicker(
     return loadFilePicker
 }
 
+@Composable
+fun dictionaryFilePicker(mainLocale: Locale?): ManagedActivityResultLauncher<Intent, ActivityResult> {
+    val ctx = LocalContext.current
+    val cachedDictionaryFile = File(ctx.cacheDir.path + File.separator + "temp_dict")
+    var done by remember { mutableStateOf(false) }
+    val picker = filePicker { uri ->
+        cachedDictionaryFile.delete()
+        FileUtils.copyContentUriToNewFile(uri, ctx, cachedDictionaryFile)
+        done = true
+    }
+    if (done)
+        NewDictionaryDialog(
+            onDismissRequest = { done = false },
+            cachedDictionaryFile,
+            mainLocale
+        )
+
+    return picker
+}

app/src/main/java/helium314/keyboard/settings/SettingsActivity.kt

@@ -13,6 +13,8 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.compose.foundation.layout.Column
 import androidx.compose.material3.Surface
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
 import androidx.compose.ui.platform.ComposeView
 import androidx.core.view.ViewCompat
 import androidx.core.view.isGone
@@ -26,6 +28,7 @@ import helium314.keyboard.latin.settings.Settings
 import helium314.keyboard.latin.utils.ExecutorUtils
 import helium314.keyboard.latin.utils.cleanUnusedMainDicts
 import helium314.keyboard.latin.utils.prefs
+import helium314.keyboard.settings.dialogs.NewDictionaryDialog
 import kotlinx.coroutines.flow.MutableStateFlow
 import java.io.BufferedOutputStream
 import java.io.File
@@ -43,6 +46,8 @@ import java.util.zip.ZipOutputStream
 class SettingsActivity : AppCompatActivity(), SharedPreferences.OnSharedPreferenceChangeListener {
     private val prefs by lazy { this.prefs() }
     val prefChanged = MutableStateFlow(0) // simple counter, as the only relevant information is that something changed
+    private val dictUriFlow = MutableStateFlow<Uri?>(null)
+    private val cachedDictionaryFile by lazy { File(this.cacheDir.path + File.separator + "temp_dict") }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -55,7 +60,7 @@ class SettingsActivity : AppCompatActivity(), SharedPreferences.OnSharedPreferen
             askAboutCrashReports()
 
         // with this the layout edit dialog is not covered by the keyboard
-        //  alterative of Modifier.imePadding() and properties = DialogProperties(decorFitsSystemWindows = false) has other weird side effects
+        //  alternative of Modifier.imePadding() and properties = DialogProperties(decorFitsSystemWindows = false) has other weird side effects
         ViewCompat.setOnApplyWindowInsetsListener(window.decorView.rootView) { _, insets -> insets }
 
         settingsContainer = SettingsContainer(this)
@@ -73,13 +78,14 @@ class SettingsActivity : AppCompatActivity(), SharedPreferences.OnSharedPreferen
         findViewById<ComposeView>(R.id.navHost).setContent {
             Theme {
                 Surface {
+                    val dictUri by dictUriFlow.collectAsState()
                     if (spellchecker)
                         Column { // lazy way of implementing spell checker settings
                             settingsContainer[Settings.PREF_USE_CONTACTS]!!.Preference()
                             settingsContainer[Settings.PREF_BLOCK_POTENTIALLY_OFFENSIVE]!!.Preference()
                         }
                     else
-                    SettingsNavHost(
+                        SettingsNavHost(
                             onClickBack = {
 //                                this.finish() // todo: when removing old settings
                                 if (supportFragmentManager.findFragmentById(R.id.settingsFragmentContainer) == null)
@@ -87,9 +93,25 @@ class SettingsActivity : AppCompatActivity(), SharedPreferences.OnSharedPreferen
                                 else supportFragmentManager.popBackStack()
                             }
                         )
+                    if (dictUri != null) {
+                        NewDictionaryDialog(
+                            onDismissRequest = { dictUriFlow.value = null },
+                            cachedFile = cachedDictionaryFile,
+                            mainLocale = null
+                        )
+                    }
                 }
             }
         }
+
+        if (intent?.action == Intent.ACTION_VIEW) {
+            intent?.data?.let {
+                cachedDictionaryFile.delete()
+                FileUtils.copyContentUriToNewFile(it, this, cachedDictionaryFile)
+                dictUriFlow.value = it
+            }
+            intent = null
+        }
     }
 
     private fun updateContainerVisibility() { // todo: remove when removing old settings

app/src/main/java/helium314/keyboard/settings/SettingsNavHost.kt

@@ -15,6 +15,7 @@ import helium314.keyboard.settings.screens.AdvancedSettingsScreen
 import helium314.keyboard.settings.screens.AppearanceScreen
 import helium314.keyboard.settings.screens.ColorsScreen
 import helium314.keyboard.settings.screens.DebugScreen
+import helium314.keyboard.settings.screens.DictionaryScreen
 import helium314.keyboard.settings.screens.GestureTypingScreen
 import helium314.keyboard.settings.screens.LanguageScreen
 import helium314.keyboard.settings.screens.MainSettingsScreen
@@ -60,6 +61,7 @@ fun SettingsNavHost(
                 onClickAppearance = { navController.navigate(SettingsDestination.Appearance) },
                 onClickLanguage = { navController.navigate(SettingsDestination.Languages) },
                 onClickLayouts = { navController.navigate(SettingsDestination.Layouts) },
+                onClickDictionaries = { navController.navigate(SettingsDestination.Dictionaries) },
                 onClickBack = ::goBack,
             )
         }
@@ -95,6 +97,9 @@ fun SettingsNavHost(
         composable(SettingsDestination.Languages) {
             LanguageScreen(onClickBack = ::goBack)
         }
+        composable(SettingsDestination.Dictionaries) {
+            DictionaryScreen(onClickBack = ::goBack)
+        }
         composable(SettingsDestination.Layouts) {
             SecondaryLayoutScreen(onClickBack = ::goBack)
         }
@@ -124,6 +129,7 @@ object SettingsDestination {
     const val PersonalDictionary = "personal_dictionary"
     const val Languages = "languages"
     const val Layouts = "layouts"
+    const val Dictionaries = "dictionaries"
     val navTarget = MutableStateFlow(Settings)
 
     private val navScope = CoroutineScope(Dispatchers.Default)

app/src/main/java/helium314/keyboard/settings/dialogs/DictionaryDialog.kt

@@ -0,0 +1,91 @@
+package helium314.keyboard.settings.dialogs
+
+import android.content.Intent
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+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.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import helium314.keyboard.compat.locale
+import helium314.keyboard.latin.Dictionary
+import helium314.keyboard.latin.R
+import helium314.keyboard.latin.common.LocaleUtils
+import helium314.keyboard.latin.utils.DictionaryInfoUtils
+import helium314.keyboard.settings.dictionaryFilePicker
+import helium314.keyboard.settings.screens.getUserAndInternalDictionaries
+import java.util.Locale
+
+@Composable
+fun DictionaryDialog(
+    onDismissRequest: () -> Unit,
+    locale: Locale,
+) {
+    val ctx = LocalContext.current
+    val (dictionaries, hasInternal) = getUserAndInternalDictionaries(ctx, locale)
+    val picker = dictionaryFilePicker(locale)
+    ThreeButtonAlertDialog(
+        onDismissRequest = onDismissRequest,
+        onConfirmed = {},
+        confirmButtonText = null,
+        cancelButtonText = stringResource(R.string.dialog_close),
+        title = { Text(LocaleUtils.getLocaleDisplayNameInSystemLocale(locale, ctx)) },
+        text = {
+            Column {
+                if (hasInternal) {
+                    val color = if (dictionaries.none { it.startsWith(Dictionary.TYPE_MAIN + ":") }) MaterialTheme.colorScheme.onSurface
+                    else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f) // for disabled look
+                    Text(stringResource(R.string.internal_dictionary_summary), color = color, modifier = Modifier.fillMaxWidth())
+                }
+                dictionaries.forEach {
+                    val header = DictionaryInfoUtils.getDictionaryFileHeaderOrNull(it)
+                    val type = header?.mIdString?.substringBefore(":")
+                    var showDeleteDialog by remember { mutableStateOf(false) }
+                    if (header != null) {
+                        HorizontalDivider()
+                        Row(
+                            horizontalArrangement = Arrangement.SpaceBetween,
+                            verticalAlignment = Alignment.CenterVertically,
+                            modifier = Modifier.fillMaxWidth().padding(vertical = 8.dp)
+                        ) {
+                            Column {
+                                Text(header.info(LocalContext.current.resources.configuration.locale()), style = MaterialTheme.typography.bodyMedium)
+                            }
+                            IconButton(
+                                onClick = { showDeleteDialog = true }
+                            ) { Icon(painterResource(R.drawable.ic_bin), stringResource(R.string.delete)) }
+                        }
+                    }
+                    if (showDeleteDialog)
+                        ConfirmationDialog(
+                            onDismissRequest = { showDeleteDialog = false },
+                            onConfirmed = { it.delete() },
+                            text = { Text(stringResource(R.string.remove_dictionary_message, type ?: ""))}
+                        )
+                }
+            }
+        },
+        neutralButtonText = stringResource(R.string.add_new_dictionary_title),
+        onNeutral = {
+            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+                .addCategory(Intent.CATEGORY_OPENABLE)
+                .setType("application/octet-stream")
+            picker.launch(intent)
+        }
+    )
+}

app/src/main/java/helium314/keyboard/settings/dialogs/NewDictionaryDialog.kt

@@ -0,0 +1,93 @@
+package helium314.keyboard.settings.dialogs
+
+import android.content.Intent
+import androidx.compose.foundation.layout.Column
+import androidx.compose.material3.MaterialTheme
+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.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import helium314.keyboard.compat.locale
+import helium314.keyboard.dictionarypack.DictionaryPackConstants
+import helium314.keyboard.latin.Dictionary
+import helium314.keyboard.latin.R
+import helium314.keyboard.latin.ReadOnlyBinaryDictionary
+import helium314.keyboard.latin.common.LocaleUtils
+import helium314.keyboard.latin.common.LocaleUtils.constructLocale
+import helium314.keyboard.latin.makedict.DictionaryHeader
+import helium314.keyboard.latin.settings.USER_DICTIONARY_SUFFIX
+import helium314.keyboard.latin.utils.DictionaryInfoUtils
+import helium314.keyboard.latin.utils.ScriptUtils.script
+import helium314.keyboard.latin.utils.SubtypeSettings
+import java.io.File
+import java.util.Locale
+
+@Composable
+fun NewDictionaryDialog(
+    onDismissRequest: () -> Unit,
+    cachedFile: File,
+    mainLocale: Locale?
+) {
+    val (error, header) = checkDict(cachedFile)
+    if (error != null) {
+        InfoDialog(stringResource(error), onDismissRequest)
+        cachedFile.delete()
+    } else if (header != null) {
+        val ctx = LocalContext.current
+        val dictLocale = header.mLocaleString.constructLocale()
+        var locale by remember { mutableStateOf(mainLocale ?: dictLocale) }
+        val comparer = compareBy<Locale>({ it != mainLocale}, { it != dictLocale }, { it.script() != dictLocale.script() })
+        val locales = SubtypeSettings.getAvailableSubtypeLocales().sortedWith(comparer)
+        val cacheDir = DictionaryInfoUtils.getCacheDirectoryForLocale(locale, ctx)
+        val dictFile = File(cacheDir, header.mIdString.substringBefore(":") + "_" + USER_DICTIONARY_SUFFIX)
+        ThreeButtonAlertDialog(
+            onDismissRequest = { onDismissRequest(); cachedFile.delete() },
+            onConfirmed = {
+                dictFile.parentFile?.mkdirs()
+                dictFile.delete()
+                cachedFile.renameTo(dictFile)
+                if (header.mIdString.substringBefore(":") == Dictionary.TYPE_MAIN) {
+                    // replaced main dict, remove the one created from internal data
+                    val internalMainDictFile = File(cacheDir, DictionaryInfoUtils.getExtractedMainDictFilename())
+                    internalMainDictFile.delete()
+                }
+                val newDictBroadcast = Intent(DictionaryPackConstants.NEW_DICTIONARY_INTENT_ACTION)
+                ctx.sendBroadcast(newDictBroadcast)
+            },
+            text = {
+                Column {
+                    Text(header.info(LocalContext.current.resources.configuration.locale()))
+                    // todo: dropdown takes very long to load, should be lazy!
+                    //  but can't be lazy because of measurements (has width of widest element)
+                    //  -> what do?
+                    DropDownField(
+                        selectedItem = locale,
+                        onSelected = { locale = it },
+                        items = locales
+                    ) { Text(LocaleUtils.getLocaleDisplayNameInSystemLocale(it, ctx)) }
+                    if (locale.script() != dictLocale.script())
+                        Text("wrong script", color = MaterialTheme.colorScheme.error) // todo: string resource
+                    if (dictFile.exists())
+                        Text("will overwrite existing dictionary", color = MaterialTheme.colorScheme.error) // todo: string resource
+                }
+            }
+        )
+    }
+}
+
+private fun checkDict(file: File): Pair<Int?, DictionaryHeader?> {
+    val newHeader = DictionaryInfoUtils.getDictionaryFileHeaderOrNull(file, 0, file.length())
+        ?: return R.string.dictionary_file_error to null
+
+    val locale = newHeader.mLocaleString.constructLocale()
+    val dict = ReadOnlyBinaryDictionary(file.absolutePath, 0, file.length(), false, locale, "test")
+    if (!dict.isValidDictionary) {
+        dict.close()
+        return R.string.dictionary_load_error to null
+    }
+    return null to newHeader
+}

app/src/main/java/helium314/keyboard/settings/dialogs/SubtypeDialog.kt

@@ -295,6 +295,7 @@ fun SubtypeDialog(
                 currentSubtype = if (newValue.isEmpty()) currentSubtype.without(ExtraValue.SECONDARY_LOCALES)
                 else currentSubtype.with(ExtraValue.SECONDARY_LOCALES, newValue)
             },
+            title = { Text("languages with dictionaries") }, // todo: string resource
             items = availableLocalesForScript,
             initialSelection = currentSubtype.getExtraValueOf(ExtraValue.SECONDARY_LOCALES)
                 ?.split(Separators.KV)?.map { it.constructLocale() }.orEmpty(),
@@ -392,7 +393,7 @@ private fun WithSmallTitle(
 }
 
 @Composable
-private fun <T>DropDownField(
+fun <T>DropDownField(
     items: List<T>,
     selectedItem: T,
     onSelected: (T) -> Unit,

app/src/main/java/helium314/keyboard/settings/dialogs/ThreeButtonAlertDialog.kt

@@ -86,7 +86,7 @@ fun ThreeButtonAlertDialog(
                         if (confirmButtonText != null)
                             TextButton(
                                 enabled = checkOk(),
-                                onClick = { onDismissRequest(); onConfirmed() },
+                                onClick = { onConfirmed(); onDismissRequest() },
                             ) { Text(confirmButtonText) }
                     }
                 }

app/src/main/java/helium314/keyboard/settings/screens/DictionaryScreen.kt

@@ -0,0 +1,131 @@
+package helium314.keyboard.settings.screens
+
+import android.content.Context
+import android.content.Intent
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.MaterialTheme
+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.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import helium314.keyboard.latin.Dictionary
+import helium314.keyboard.latin.R
+import helium314.keyboard.latin.common.LocaleUtils
+import helium314.keyboard.latin.common.LocaleUtils.constructLocale
+import helium314.keyboard.latin.common.splitOnWhitespace
+import helium314.keyboard.latin.settings.USER_DICTIONARY_SUFFIX
+import helium314.keyboard.latin.utils.DICTIONARY_URL
+import helium314.keyboard.latin.utils.DictionaryInfoUtils
+import helium314.keyboard.latin.utils.SubtypeLocaleUtils
+import helium314.keyboard.latin.utils.SubtypeSettings
+import helium314.keyboard.latin.utils.getDictionaryLocales
+import helium314.keyboard.latin.utils.locale
+import helium314.keyboard.latin.utils.prefs
+import helium314.keyboard.settings.SearchScreen
+import helium314.keyboard.settings.dialogs.ConfirmationDialog
+import helium314.keyboard.settings.dialogs.DictionaryDialog
+import helium314.keyboard.settings.dictionaryFilePicker
+import java.io.File
+import java.util.Locale
+
+@Composable
+fun DictionaryScreen(
+    onClickBack: () -> Unit,
+) {
+    val ctx = LocalContext.current
+    val enabledLanguages = SubtypeSettings.getEnabledSubtypes(ctx.prefs(), true).map { it.locale().language }
+    val comparer = compareBy<Locale>({ it.language !in enabledLanguages }, { it.displayName }) // todo: could also prefer if there is a user-added dict
+    val dictionaryLocales = getDictionaryLocales(ctx).sortedWith(comparer).toMutableList()
+    dictionaryLocales.add(0, Locale(SubtypeLocaleUtils.NO_LANGUAGE))
+    var selectedLocale: Locale? by remember { mutableStateOf(null) }
+    var showAddDictDialog by remember { mutableStateOf(false) }
+    val dictPicker = dictionaryFilePicker(selectedLocale)
+    SearchScreen(
+        onClickBack = onClickBack,
+        title = { Text(stringResource(R.string.dictionary_settings_category)) },
+        filteredItems = { term ->
+            if (term.isBlank()) dictionaryLocales
+            else dictionaryLocales.filter {
+                    it.language != SubtypeLocaleUtils.NO_LANGUAGE &&
+                    LocaleUtils.getLocaleDisplayNameInSystemLocale(it, ctx).replace("(", "")
+                        .splitOnWhitespace().any { it.startsWith(term, true) }
+                }
+        },
+        itemContent = {
+            if (it.language == SubtypeLocaleUtils.NO_LANGUAGE) {
+                Text(stringResource(R.string.add_new_dictionary_title), Modifier.clickable { showAddDictDialog = true })
+            } else {
+                Column(
+                    Modifier.clickable { selectedLocale = it }
+                        .padding(vertical = 6.dp, horizontal = 16.dp)
+                        .fillMaxWidth()
+                ) {
+                    val (dicts, hasInternal) = getUserAndInternalDictionaries(ctx, it)
+                    val types = dicts.mapTo(mutableListOf()) { it.name.substringBefore("_${USER_DICTIONARY_SUFFIX}") }
+                    if (hasInternal && !types.contains(Dictionary.TYPE_MAIN))
+                        types.add(0, stringResource(R.string.internal_dictionary_summary))
+                    Text(LocaleUtils.getLocaleDisplayNameInSystemLocale(it, ctx))
+                    Text(
+                        types.joinToString(", "),
+                        style = MaterialTheme.typography.bodyMedium,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant
+                    )
+                }
+            }
+        }
+    )
+    if (showAddDictDialog) {
+        ConfirmationDialog(
+            onDismissRequest = { showAddDictDialog = false },
+            onConfirmed = {
+                val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+                    .addCategory(Intent.CATEGORY_OPENABLE)
+                    .setType("application/octet-stream")
+                dictPicker.launch(intent)
+            },
+            title = { Text(stringResource(R.string.add_new_dictionary_title)) },
+            text = {
+                // todo: no html in compose
+                val dictLink = "<a href='$DICTIONARY_URL'>" + ctx.getString(R.string.dictionary_link_text) + "</a>"
+                Text(stringResource(R.string.add_dictionary, dictLink))
+            }
+        )
+    }
+    if (selectedLocale != null) {
+        DictionaryDialog(
+            onDismissRequest = { selectedLocale = null },
+            locale = selectedLocale!!
+        )
+    }
+}
+
+/** @return list of user dictionary files and whether an internal dictionary exists */
+fun getUserAndInternalDictionaries(context: Context, locale: Locale): Pair<List<File>, Boolean> {
+    val userDicts = mutableListOf<File>()
+    var hasInternalDict = false
+    val userLocaleDir = File(DictionaryInfoUtils.getCacheDirectoryForLocale(locale, context))
+    if (userLocaleDir.exists() && userLocaleDir.isDirectory) {
+        userLocaleDir.listFiles()?.forEach {
+            if (it.name.endsWith(USER_DICTIONARY_SUFFIX))
+                userDicts.add(it)
+            else if (it.name.startsWith(DictionaryInfoUtils.MAIN_DICT_PREFIX))
+                hasInternalDict = true
+        }
+    }
+    if (hasInternalDict)
+        return userDicts to true
+    val internalDicts = DictionaryInfoUtils.getAssetsDictionaryList(context) ?: return userDicts to false
+    val best = LocaleUtils.getBestMatch(locale, internalDicts.toList()) {
+        DictionaryInfoUtils.extractLocaleFromAssetsDictionaryFile(it)?.constructLocale() ?: SubtypeLocaleUtils.NO_LANGUAGE.constructLocale()
+    }
+    return userDicts to (best != null)
+}

app/src/main/java/helium314/keyboard/settings/screens/MainSettingsScreen.kt

@@ -44,6 +44,7 @@ fun MainSettingsScreen(
     onClickAppearance: () -> Unit,
     onClickLanguage: () -> Unit,
     onClickLayouts: () -> Unit,
+    onClickDictionaries: () -> Unit,
     onClickBack: () -> Unit,
 ) {
     val ctx = LocalContext.current
@@ -133,6 +134,17 @@ fun MainSettingsScreen(
                     contentDescription = null
                 )
             }
+            Preference(
+                name = stringResource(R.string.dictionary_settings_category),
+                onClick = onClickDictionaries,
+                icon = R.drawable.ic_dictionary
+            ) {
+                Icon(
+                    painter = painterResource(R.drawable.ic_arrow_left),
+                    modifier = Modifier.scale(-1f, 1f),
+                    contentDescription = null
+                )
+            }
             Preference(
                 name = stringResource(R.string.settings_screen_advanced),
                 onClick = onClickAdvanced,
@@ -198,7 +210,7 @@ fun MainSettingsScreen(
 private fun PreviewScreen() {
     Theme(true) {
         Surface {
-            MainSettingsScreen({}, {}, {}, {}, {}, {}, {}, {}, {}, {})
+            MainSettingsScreen({}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {})
         }
     }
 }

app/src/main/res/drawable/ic_dictionary.xml

@@ -0,0 +1,20 @@
+<!--
+    icon available in Android Studio
+    SPDX-License-Identifier: Apache-2.0
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:autoMirrored="true"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="24dp">
+      
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