Add global search progress bar (closes #3727)

app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/globalsearch/GlobalSearchController.kt

@@ -8,6 +8,7 @@ import android.view.MenuItem
 import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.widget.SearchView
+import androidx.core.view.isVisible
 import androidx.recyclerview.widget.LinearLayoutManager
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.database.models.Manga
@@ -194,6 +195,14 @@ open class GlobalSearchController(
         }
 
         adapter?.updateDataSet(searchResult)
+
+        val progress = searchResult.mapNotNull { it.results }.count().toDouble() / searchResult.size
+        if (progress < 1) {
+            binding.progressBar.isVisible = true
+            binding.progressBar.progress = (progress * 100).toInt()
+        } else {
+            binding.progressBar.isVisible = false
+        }
     }
 
     /**

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

@@ -13,6 +13,16 @@
         android:paddingBottom="4dp"
         tools:listitem="@layout/global_search_controller_card" />
 
+    <ProgressBar
+        android:id="@+id/progress_bar"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="match_parent"
+        android:layout_height="2dp"
+        android:max="100"
+        android:visibility="gone"
+        tools:progress="50"
+        tools:visibility="visible" />
+
     <FrameLayout
         android:id="@+id/progress"
         android:layout_width="match_parent"