More fixes to D&D sorting with new presenter

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryCategoryView.kt

@@ -81,8 +81,6 @@ class LibraryCategoryView @JvmOverloads constructor(context: Context, attrs: Att
 
     private var lastClickPosition = -1
 
-    private var justDraggedAndDropped = false
-
     fun onCreate(controller: LibraryController) {
         this.controller = controller
 
@@ -239,10 +237,10 @@ class LibraryCategoryView @JvmOverloads constructor(context: Context, attrs: Att
         val mangaForCategory = event.getMangaForCategory(category).orEmpty()
 
         // Update the category with its manga.
-        if (!justDraggedAndDropped)
+       // if (!justDraggedAndDropped)
             adapter.setItems(mangaForCategory)
-        else
-            justDraggedAndDropped = false
+       // else
+         //   justDraggedAndDropped = false
 
         swipe_refresh.isEnabled = !preferences.hideCategories().getOrDefault()
 
@@ -366,7 +364,7 @@ class LibraryCategoryView @JvmOverloads constructor(context: Context, attrs: Att
             preferences.defaultMangaOrder().set(mangaIds.joinToString("/"))
         else
             db.insertCategory(category).asRxObservable().subscribe()
-        justDraggedAndDropped = true
+        //justDraggedAndDropped = true
         controller.onCatSortChanged(category.id)
         controller.enableReorderItems(category)
     }

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryGridHolder.kt

@@ -60,9 +60,9 @@ class LibraryGridHolder(
         local_text.visibility = if (item.manga.source == LocalSource.ID) View.VISIBLE else View.GONE
 
         // Update the cover.
-        GlideApp.with(view.context).clear(thumbnail)
-        GlideApp.with(view.context)
-            .load(item.manga)
+        if (item.manga.thumbnail_url == null)
+            GlideApp.with(view.context).clear(thumbnail)
+        else GlideApp.with(view.context).load(item.manga)
             .diskCacheStrategy(DiskCacheStrategy.AUTOMATIC)
             .signature(ObjectKey(MangaImpl.getLastCoverFetch(item.manga.id!!).toString()))
             .centerCrop().into(thumbnail)

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt

@@ -211,7 +211,11 @@ class LibraryPresenter(
 
     private fun applySort(map: LibraryMap, catId: Int?): LibraryMap {
         if (catId == null) return map
-        val category = allCategories.find { it.id == catId } ?: return map
+        val category = db.getCategories().executeAsBlocking().find { it.id == catId } ?: return map
+        allCategories.find { it.id == catId }?.apply {
+            mangaOrder = category.mangaOrder
+            mangaSort = category.mangaSort
+        }
 
         val lastReadManga by lazy {
             var counter = 0