Show number of hidden entries when adding apps

app/src/main/java/io/timelimit/android/ui/manage/category/apps/add/AddCategoryAppsFragment.kt

@@ -97,7 +97,17 @@ class AddCategoryAppsFragment : DialogFragment() {
             apps ->
 
             apps?.sortedBy { app -> app.title.toLowerCase() }
-        }.observe(this, Observer { adapter.data = it })
+        }.observe(this, Observer {
+            val selectedPackageNames = adapter.selectedApps
+            val visiblePackageNames = it?.map { it.packageName }?.toSet() ?: emptySet()
+            val hiddenSelectedPackageNames = selectedPackageNames.toMutableSet().apply { removeAll(visiblePackageNames) }.size
+
+            adapter.data = it
+            binding.hiddenEntries = if (hiddenSelectedPackageNames == 0)
+                null
+            else
+                resources.getQuantityString(R.plurals.category_apps_add_dialog_hidden_entries, hiddenSelectedPackageNames, hiddenSelectedPackageNames)
+        })
 
         database.category().getCategoriesByChildId(params.childId)
                 .switchMap { categories ->

app/src/main/res/layout/fragment_add_category_apps.xml

@@ -18,9 +18,24 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     tools:context="io.timelimit.android.ui.manage.category.apps.add.AddCategoryAppsFragment">
 
-    <androidx.coordinatorlayout.widget.CoordinatorLayout
+    <data>
+        <variable
+            name="hiddenEntries"
+            type="String" />
+
+        <import type="android.text.TextUtils" />
+        <import type="android.view.View" />
+    </data>
+
+    <LinearLayout
+        android:orientation="vertical"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="wrap_content">
+
+        <androidx.coordinatorlayout.widget.CoordinatorLayout
+            android:layout_weight="1"
+            android:layout_width="match_parent"
+            android:layout_height="0dp">
 
             <com.google.android.material.appbar.AppBarLayout
                 android:layout_width="match_parent"
@@ -46,4 +61,14 @@
 
         </androidx.coordinatorlayout.widget.CoordinatorLayout>
 
+        <TextView
+            android:padding="8dp"
+            android:textAppearance="?android:textAppearanceMedium"
+            tools:text="2 entries are hidden"
+            android:visibility="@{TextUtils.isEmpty(hiddenEntries) ? View.GONE : View.VISIBLE}"
+            android:text="@{hiddenEntries}"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+
+    </LinearLayout>
 </layout>

app/src/main/res/values-de/strings-category-apps.xml

@@ -21,6 +21,10 @@
     <string name="category_apps_add_dialog_filter_hint">Nach Apps suchen</string>
     <string name="category_apps_add_dialog_show_sys_apps">Systemapps anzeigen</string>
     <string name="category_apps_add_dialog_select_all">Alle auswählen</string>
+    <plurals name="category_apps_add_dialog_hidden_entries">
+        <item quantity="one">%d ausgeblendeten Eintrag ausgewählt</item>
+        <item quantity="other">%s ausgeblendete Einträge ausgewählt</item>
+    </plurals>
 
     <string name="category_apps_item_removed_toast">%s wurde entfernt</string>
 

app/src/main/res/values/strings-category-apps.xml

@@ -21,6 +21,10 @@
     <string name="category_apps_add_dialog_filter_hint">Search Apps</string>
     <string name="category_apps_add_dialog_show_sys_apps">Show system Apps</string>
     <string name="category_apps_add_dialog_select_all">Select all</string>
+    <plurals name="category_apps_add_dialog_hidden_entries">
+        <item quantity="one">%d hidden entry selected</item>
+        <item quantity="other">%s hidden entries selected</item>
+    </plurals>
 
     <string name="category_apps_item_removed_toast">%s was removed</string>