Fix language/theme settings dialog and remove delay (#8244)

* Fix language/theme settings dialog and remove delay

* inline UI preferences

* use `by remember`

* remove unused variable

* remove unused import

app/src/main/java/eu/kanade/domain/ui/model/ThemeMode.kt

@@ -1,7 +1,19 @@
 package eu.kanade.domain.ui.model
 
+import androidx.appcompat.app.AppCompatDelegate
+
 enum class ThemeMode {
     LIGHT,
     DARK,
     SYSTEM,
 }
+
+fun setAppCompatDelegateThemeMode(themeMode: ThemeMode) {
+    AppCompatDelegate.setDefaultNightMode(
+        when (themeMode) {
+            ThemeMode.LIGHT -> AppCompatDelegate.MODE_NIGHT_NO
+            ThemeMode.DARK -> AppCompatDelegate.MODE_NIGHT_YES
+            ThemeMode.SYSTEM -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
+        },
+    )
+}

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAppearanceScreen.kt

@@ -4,7 +4,6 @@ import android.app.Activity
 import android.content.Context
 import android.os.Build
 import androidx.annotation.StringRes
-import androidx.appcompat.app.AppCompatDelegate
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.ReadOnlyComposable
@@ -15,12 +14,12 @@ import androidx.compose.ui.res.stringResource
 import androidx.core.app.ActivityCompat
 import eu.kanade.domain.ui.UiPreferences
 import eu.kanade.domain.ui.model.ThemeMode
+import eu.kanade.domain.ui.model.setAppCompatDelegateThemeMode
 import eu.kanade.presentation.more.settings.Preference
 import eu.kanade.presentation.util.collectAsState
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.util.system.isTablet
 import kotlinx.coroutines.flow.collectLatest
-import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.flow.drop
 import kotlinx.coroutines.flow.merge
 import uy.kohesive.injekt.Injekt
@@ -56,25 +55,13 @@ class SettingsAppearanceScreen : SearchableSettings {
         val appThemePref = uiPreferences.appTheme()
         val amoledPref = uiPreferences.themeDarkAmoled()
 
-        LaunchedEffect(Unit) {
-            themeModePref.changes()
-                .drop(1)
-                .debounce(1000)
-                .collectLatest {
-                    AppCompatDelegate.setDefaultNightMode(
-                        when (it) {
-                            ThemeMode.LIGHT -> AppCompatDelegate.MODE_NIGHT_NO
-                            ThemeMode.DARK -> AppCompatDelegate.MODE_NIGHT_YES
-                            ThemeMode.SYSTEM -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
-                        },
-                    )
-                }
+        LaunchedEffect(themeMode) {
+            setAppCompatDelegateThemeMode(themeMode)
         }
 
         LaunchedEffect(Unit) {
             merge(appThemePref.changes(), amoledPref.changes())
                 .drop(2)
-                .debounce(1000)
                 .collectLatest { (context as? Activity)?.let { ActivityCompat.recreate(it) } }
         }
 

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsGeneralScreen.kt

@@ -7,9 +7,12 @@ import android.provider.Settings
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.ReadOnlyComposable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.core.os.LocaleListCompat
@@ -18,8 +21,6 @@ import eu.kanade.domain.library.service.LibraryPreferences
 import eu.kanade.presentation.more.settings.Preference
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.util.system.LocaleHelper
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
 import org.xmlpull.v1.XmlPullParser
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
@@ -33,7 +34,6 @@ class SettingsGeneralScreen : SearchableSettings {
 
     @Composable
     override fun getPreferences(): List<Preference> {
-        val scope = rememberCoroutineScope()
         val prefs = remember { Injekt.get<BasePreferences>() }
         val libraryPrefs = remember { Injekt.get<LibraryPreferences>() }
         return mutableListOf<Preference>().apply {
@@ -67,7 +67,7 @@ class SettingsGeneralScreen : SearchableSettings {
             }
 
             val langs = remember { getLangs(context) }
-            val currentLanguage = remember { AppCompatDelegate.getApplicationLocales().get(0)?.toLanguageTag() ?: "" }
+            var currentLanguage by remember { mutableStateOf(AppCompatDelegate.getApplicationLocales().get(0)?.toLanguageTag() ?: "") }
             add(
                 Preference.PreferenceItem.BasicListPreference(
                     value = currentLanguage,
@@ -75,19 +75,20 @@ class SettingsGeneralScreen : SearchableSettings {
                     subtitle = "%s",
                     entries = langs,
                     onValueChanged = { newValue ->
-                        scope.launch {
-                            delay(1000)
-                            val locale = if (newValue.isEmpty()) {
+                        currentLanguage = newValue
+                        true
+                    },
+                ),
+            )
+
+            LaunchedEffect(currentLanguage) {
+                val locale = if (currentLanguage.isEmpty()) {
                     LocaleListCompat.getEmptyLocaleList()
                 } else {
-                                LocaleListCompat.forLanguageTags(newValue)
+                    LocaleListCompat.forLanguageTags(currentLanguage)
                 }
                 AppCompatDelegate.setApplicationLocales(locale)
             }
-                        true
-                    },
-                ),
-            )
         }
     }
 

app/src/main/java/eu/kanade/tachiyomi/App.kt

@@ -27,6 +27,8 @@ import coil.util.DebugLogger
 import eu.kanade.data.DatabaseHandler
 import eu.kanade.domain.DomainModule
 import eu.kanade.domain.base.BasePreferences
+import eu.kanade.domain.ui.UiPreferences
+import eu.kanade.domain.ui.model.setAppCompatDelegateThemeMode
 import eu.kanade.tachiyomi.crash.CrashActivity
 import eu.kanade.tachiyomi.crash.GlobalExceptionHandler
 import eu.kanade.tachiyomi.data.coil.DomainMangaKeyer
@@ -121,6 +123,8 @@ class App : Application(), DefaultLifecycleObserver, ImageLoaderFactory {
             }
             .launchIn(ProcessLifecycleOwner.get().lifecycleScope)
 
+        setAppCompatDelegateThemeMode(Injekt.get<UiPreferences>().themeMode().get())
+
         // Updates widget update
         Injekt.get<DatabaseHandler>()
             .subscribeToList { updatesViewQueries.updates(after = UpdatesGridGlanceWidget.DateLimit.timeInMillis) }