Fix settings search

app/src/main/kotlin/org/koitharu/kotatsu/settings/SettingsActivity.kt

@@ -25,6 +25,7 @@ import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.model.MangaSourceInfo
 import org.koitharu.kotatsu.core.parser.external.ExternalMangaSource
 import org.koitharu.kotatsu.core.ui.BaseActivity
+import org.koitharu.kotatsu.core.util.ext.buildBundle
 import org.koitharu.kotatsu.core.util.ext.observe
 import org.koitharu.kotatsu.core.util.ext.observeEvent
 import org.koitharu.kotatsu.core.util.ext.textAndVisible
@@ -174,8 +175,9 @@ class SettingsActivity :
 	}
 
 	private fun navigateToPreference(item: SettingsItem) {
-		val args = Bundle(1)
-		args.putString(ARG_PREF_KEY, item.key)
+		val args = buildBundle(1) {
+			putString(ARG_PREF_KEY, item.key)
+		}
 		openFragment(item.fragmentClass, args, true)
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/settings/search/SettingsSearchFragment.kt

@@ -7,6 +7,8 @@ import android.view.ViewGroup
 import androidx.core.graphics.Insets
 import androidx.core.view.updatePadding
 import androidx.fragment.app.activityViewModels
+import androidx.recyclerview.widget.AsyncListDiffer.ListListener
+import androidx.recyclerview.widget.LinearLayoutManager
 import dagger.hilt.android.AndroidEntryPoint
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseFragment
@@ -17,7 +19,9 @@ import org.koitharu.kotatsu.databinding.FragmentSearchSuggestionBinding
 import org.koitharu.kotatsu.list.ui.adapter.ListItemType
 
 @AndroidEntryPoint
-class SettingsSearchFragment : BaseFragment<FragmentSearchSuggestionBinding>(), OnListItemClickListener<SettingsItem> {
+class SettingsSearchFragment : BaseFragment<FragmentSearchSuggestionBinding>(),
+	OnListItemClickListener<SettingsItem>,
+	ListListener<SettingsItem> {
 
 	private val viewModel: SettingsSearchViewModel by activityViewModels()
 
@@ -29,6 +33,7 @@ class SettingsSearchFragment : BaseFragment<FragmentSearchSuggestionBinding>(),
 		super.onViewBindingCreated(binding, savedInstanceState)
 		val adapter = BaseListAdapter<SettingsItem>()
 			.addDelegate(ListItemType.NAV_ITEM, settingsItemAD(this))
+		adapter.addListListener(this)
 		binding.root.adapter = adapter
 		binding.root.setHasFixedSize(true)
 		viewModel.content.observe(viewLifecycleOwner, adapter)
@@ -45,4 +50,13 @@ class SettingsSearchFragment : BaseFragment<FragmentSearchSuggestionBinding>(),
 	}
 
 	override fun onItemClick(item: SettingsItem, view: View) = viewModel.navigateToPreference(item)
+
+	override fun onCurrentListChanged(
+		previousList: List<SettingsItem?>,
+		currentList: List<SettingsItem?>
+	) {
+		if (currentList.size != previousList.size) {
+			(viewBinding?.root?.layoutManager as? LinearLayoutManager)?.scrollToPositionWithOffset(0, 0)
+		}
+	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/settings/search/SettingsSearchHelper.kt

@@ -13,9 +13,12 @@ import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.settings.AppearanceSettingsFragment
 import org.koitharu.kotatsu.settings.DownloadsSettingsFragment
 import org.koitharu.kotatsu.settings.NetworkSettingsFragment
+import org.koitharu.kotatsu.settings.ProxySettingsFragment
 import org.koitharu.kotatsu.settings.ReaderSettingsFragment
 import org.koitharu.kotatsu.settings.ServicesSettingsFragment
+import org.koitharu.kotatsu.settings.SuggestionsSettingsFragment
 import org.koitharu.kotatsu.settings.about.AboutSettingsFragment
+import org.koitharu.kotatsu.settings.backup.PeriodicalBackupSettingsFragment
 import org.koitharu.kotatsu.settings.sources.SourcesSettingsFragment
 import org.koitharu.kotatsu.settings.tracker.TrackerSettingsFragment
 import org.koitharu.kotatsu.settings.userdata.UserDataSettingsFragment
@@ -39,6 +42,30 @@ class SettingsSearchHelper @Inject constructor(
 		preferenceManager.inflateTo(result, R.xml.pref_tracker, emptyList(), TrackerSettingsFragment::class.java)
 		preferenceManager.inflateTo(result, R.xml.pref_services, emptyList(), ServicesSettingsFragment::class.java)
 		preferenceManager.inflateTo(result, R.xml.pref_about, emptyList(), AboutSettingsFragment::class.java)
+		preferenceManager.inflateTo(
+			result,
+			R.xml.pref_backup_periodic,
+			listOf(context.getString(R.string.data_and_privacy)),
+			PeriodicalBackupSettingsFragment::class.java,
+		)
+		preferenceManager.inflateTo(
+			result,
+			R.xml.pref_proxy,
+			listOf(context.getString(R.string.proxy)),
+			ProxySettingsFragment::class.java,
+		)
+		preferenceManager.inflateTo(
+			result,
+			R.xml.pref_suggestions,
+			listOf(context.getString(R.string.suggestions)),
+			SuggestionsSettingsFragment::class.java,
+		)
+		preferenceManager.inflateTo(
+			result,
+			R.xml.pref_sources,
+			listOf(context.getString(R.string.remote_sources)),
+			SourcesSettingsFragment::class.java,
+		)
 		return result
 	}
 

app/src/main/kotlin/org/koitharu/kotatsu/settings/search/SettingsSearchMenuProvider.kt

@@ -22,18 +22,20 @@ class SettingsSearchMenuProvider(
 
 	override fun onPrepareMenu(menu: Menu) {
 		super.onPrepareMenu(menu)
-		val currentQuery = viewModel.currentQuery
-		if (currentQuery.isNotEmpty()) {
+		if (viewModel.isSearchActive.value) {
 			val menuItem = menu.findItem(R.id.action_search)
 			menuItem.expandActionView()
 			val searchView = menuItem.actionView as SearchView
-			searchView.setQuery(currentQuery, false)
+			searchView.setQuery(viewModel.currentQuery, false)
 		}
 	}
 
 	override fun onMenuItemSelected(menuItem: MenuItem): Boolean = false
 
-	override fun onMenuItemActionExpand(item: MenuItem): Boolean = true
+	override fun onMenuItemActionExpand(item: MenuItem): Boolean {
+		viewModel.startSearch()
+		return true
+	}
 
 	override fun onMenuItemActionCollapse(item: MenuItem): Boolean {
 		viewModel.discardSearch()

app/src/main/kotlin/org/koitharu/kotatsu/settings/search/SettingsSearchViewModel.kt

@@ -18,30 +18,43 @@ class SettingsSearchViewModel @Inject constructor(
 	private val searchHelper: SettingsSearchHelper,
 ) : BaseViewModel() {
 
-	private val query = MutableStateFlow("")
+	private val query = MutableStateFlow<String?>(null)
 	private val allSettings by lazy {
 		searchHelper.inflatePreferences()
 	}
 
 	val content = query.map { q ->
-		allSettings.filter { it.title.contains(q, ignoreCase = true) }
+		if (q == null) {
+			emptyList()
+		} else {
+			allSettings.filter { it.title.contains(q, ignoreCase = true) }
+		}
 	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Lazily, emptyList())
 
 	val isSearchActive = query.map {
-		it.isNotEmpty()
-	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Lazily, false)
+		it != null
+	}.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Lazily, query.value != null)
 
 	val onNavigateToPreference = MutableEventFlow<SettingsItem>()
 	val currentQuery: String
-		get() = query.value
+		get() = query.value.orEmpty()
 
 	fun onQueryChanged(value: String) {
-		query.value = value
+		if (query.value != null) {
+			query.value = value
+		}
 	}
 
-	fun discardSearch() = onQueryChanged("")
+	fun discardSearch() {
+		query.value = null
+	}
+
+	fun startSearch() {
+		query.value = query.value.orEmpty()
+	}
 
 	fun navigateToPreference(item: SettingsItem) {
+		discardSearch()
 		onNavigateToPreference.call(item)
 	}
 }

app/src/main/res/xml/pref_user_data.xml

@@ -46,7 +46,7 @@
 			android:summary="@string/restore_summary"
 			android:title="@string/restore_backup" />
 
-		<Preference
+		<PreferenceScreen
 			android:fragment="org.koitharu.kotatsu.settings.backup.PeriodicalBackupSettingsFragment"
 			android:key="backup_periodic"
 			android:persistent="false"