Add summaries to settings root

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

@@ -1,12 +1,56 @@
 package org.koitharu.kotatsu.settings
 
+import android.content.SharedPreferences
 import android.os.Bundle
+import android.view.View
+import androidx.annotation.StringRes
+import androidx.preference.Preference
+import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.BasePreferenceFragment
 
-class RootSettingsFragment : BasePreferenceFragment(0) {
+class RootSettingsFragment : BasePreferenceFragment(0), SharedPreferences.OnSharedPreferenceChangeListener {
 
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_root)
+		bindPreferenceSummary("appearance", R.string.theme, R.string.list_mode, R.string.language)
+		bindPreferenceSummary("reader", R.string.read_mode, R.string.scale_mode, R.string.switch_pages)
+		bindPreferenceSummary("network", R.string.proxy, R.string.dns_over_https, R.string.prefetch_content)
+		bindPreferenceSummary("userdata", R.string.protect_application, R.string.backup_restore, R.string.data_deletion)
+		bindPreferenceSummary("downloads", R.string.manga_save_location, R.string.downloads_wifi_only)
+		bindPreferenceSummary("tracker", R.string.track_sources, R.string.notifications_settings)
+		bindPreferenceSummary("services", R.string.suggestions, R.string.sync, R.string.tracking)
+		findPreference<Preference>("about")?.summary = getString(R.string.app_version, BuildConfig.VERSION_NAME)
+		bindRemoteSourcesSummary()
+	}
+
+	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+		super.onViewCreated(view, savedInstanceState)
+		settings.subscribe(this)
+	}
+
+	override fun onDestroyView() {
+		settings.unsubscribe(this)
+		super.onDestroyView()
+	}
+
+	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+		when (key) {
+			AppSettings.KEY_SOURCES_HIDDEN -> {
+				bindRemoteSourcesSummary()
+			}
+		}
+	}
+
+	private fun bindPreferenceSummary(key: String, @StringRes vararg items: Int) {
+		findPreference<Preference>(key)?.summary = items.joinToString { getString(it) }
+	}
+
+	private fun bindRemoteSourcesSummary() {
+		findPreference<Preference>(AppSettings.KEY_REMOTE_SOURCES)?.run {
+			val total = settings.remoteMangaSources.size
+			summary = getString(R.string.enabled_d_of_d, total - settings.hiddenSources.size, total)
+		}
 	}
 }

app/src/main/res/xml/pref_root.xml

@@ -11,42 +11,49 @@
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.sources.SourcesListFragment"
 		android:icon="@drawable/ic_manga_source"
-		android:key="content"
+		android:key="remote_sources"
 		android:title="@string/remote_sources" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.ReaderSettingsFragment"
 		android:icon="@drawable/ic_book_page"
+		android:key="reader"
 		android:title="@string/reader_settings" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.NetworkSettingsFragment"
 		android:icon="@drawable/ic_web"
+		android:key="network"
 		android:title="@string/network" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.UserDataSettingsFragment"
 		android:icon="@drawable/ic_data_privacy"
+		android:key="userdata"
 		android:title="@string/data_and_privacy" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.DownloadsSettingsFragment"
 		android:icon="@drawable/ic_download"
+		android:key="downloads"
 		android:title="@string/downloads" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.tracker.TrackerSettingsFragment"
 		android:icon="@drawable/ic_feed"
+		android:key="tracker"
 		android:title="@string/check_for_new_chapters" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.ServicesSettingsFragment"
 		android:icon="@drawable/ic_services"
+		android:key="services"
 		android:title="@string/services" />
 
 	<PreferenceScreen
 		android:fragment="org.koitharu.kotatsu.settings.about.AboutSettingsFragment"
 		android:icon="@drawable/ic_info_outline"
+		android:key="about"
 		android:title="@string/about" />
 
 </PreferenceScreen>