minor updates to summaries in library settings

adding support for preSummaryRes for more deceptive summaries with the value

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsLibraryController.kt

@@ -129,7 +129,8 @@ class SettingsLibraryController : SettingsController() {
                 titleRes = R.string.library_update_restriction
                 entriesRes = arrayOf(R.string.wifi, R.string.charging)
                 entryValues = listOf("wifi", "ac")
-                summaryRes = R.string.library_update_restriction_summary
+                preSummaryRes = R.string.restrictions_
+                noSelectionRes = R.string.none
 
                 preferences.libraryUpdateInterval().asObservable()
                     .subscribeUntilDestroy { isVisible = it > 0 }
@@ -158,7 +159,6 @@ class SettingsLibraryController : SettingsController() {
                 )
                 entryRange = 0..1
                 defaultValue = 0
-                summaryRes = R.string.select_order_to_update
             }
 
             triStateListPreference(activity) {

app/src/main/java/eu/kanade/tachiyomi/widget/preference/MatPreference.kt

@@ -21,6 +21,12 @@ open class MatPreference @JvmOverloads constructor(
     Preference(context, attrs) {
 
     protected val prefs: PreferencesHelper = Injekt.get()
+
+    @StringRes var preSummaryRes: Int? = null
+        set(value) {
+            field = value
+            notifyChanged()
+        }
     private var isShowing = false
 
     @StringRes var dialogTitleRes: Int? = null
@@ -41,7 +47,14 @@ open class MatPreference @JvmOverloads constructor(
         }
 
     override fun getSummary(): CharSequence? {
-        customSummaryProvider?.let { return it.provideSummary(this) }
+        customSummaryProvider?.let {
+            val preSummaryRes = preSummaryRes
+            return if (preSummaryRes != null) {
+                context.getString(preSummaryRes, it.provideSummary(this))
+            } else {
+                it.provideSummary(this)
+            }
+        }
         return super.getSummary()
     }
 

app/src/main/java/eu/kanade/tachiyomi/widget/preference/MultiListMatPreference.kt

@@ -21,6 +21,7 @@ class MultiListMatPreference @JvmOverloads constructor(
     ListMatPreference(activity, context, attrs) {
 
     var allSelectionRes: Int? = null
+    var noSelectionRes: Int? = null
 
     /** All item is always selected and uncheckabele */
     var allIsAlwaysSelected = false
@@ -56,6 +57,9 @@ class MultiListMatPreference @JvmOverloads constructor(
                 allIsAlwaysSelected -> values = values + context.getString(allRes)
             }
         }
+        if (values.isEmpty()) {
+            noSelectionRes?.let { values = listOf(context.getString(it)) }
+        }
         values.joinToString()
     }
 

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

@@ -211,9 +211,9 @@
     <!-- Library settings -->
     <string name="library_update_frequency">Library update frequency</string>
     <string name="library_update_order">Library update order</string>
-    <string name="select_order_to_update">Select the order in which Tachiyomi checks for update</string>
     <string name="library_update_restriction">Library update restrictions</string>
     <string name="library_update_restriction_summary">Update only when the conditions are met</string>
+    <string name="restrictions_">Restrictions: %1$s</string>
     <string name="only_update_ongoing">Only update ongoing manga</string>
     <string name="sort_by_ignoring_articles">Sort by ignoring articles</string>
     <string name="when_sorting_ignore_articles">When sorting alphabetically, sort ignoring