fix last visible item move backwards on scroll

Calvin-LL · May 13, 2024 · 3b68632 · 3b68632
1 parent 3563c55
commit 3b68632
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/reorderable/src/commonMain/kotlin/sh/calvin/reorderable/ReorderableLazyCollection.kt b/reorderable/src/commonMain/kotlin/sh/calvin/reorderable/ReorderableLazyCollection.kt
@@ -506,6 +506,14 @@ open class ReorderableLazyCollectionState<out T> internal constructor(
             onMoveStateMutex.unlock()
             return
         }
+        val isDraggingItemAtEnd = when (direction) {
+            Scroller.Direction.FORWARD -> draggingItem.index == state.layoutInfo.visibleItemsInfo.lastOrNull()?.index
+            Scroller.Direction.BACKWARD -> draggingItem.index == state.firstVisibleItemIndex
+        }
+        if (isDraggingItemAtEnd) {
+            onMoveStateMutex.unlock()
+            return
+        }
         val dragOffset = draggingItemOffset.reverseAxisIfNecessary()
             .reverseAxisWithLayoutDirectionIfLazyVerticalStaggeredGridRtlFix()
         val startOffset = draggingItem.offset.toOffset() + dragOffset