Another deletion option: before 1st visible cell & partially into vie…

…wport
FXMisc · Mar 28, 2017 · 22da999 · 22da999
1 parent 3658c32
commit 22da999
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/main/java/org/fxmisc/flowless/TargetPosition.java b/src/main/java/org/fxmisc/flowless/TargetPosition.java
@@ -30,6 +30,9 @@ public TargetPosition transformByChange(
         if(itemIndex >= pos + removedSize) {
             // change before the target item, just update item index
             return new StartOffStart(itemIndex - removedSize + addedSize, offsetFromStart);
+        } else if (pos <= itemIndex && itemIndex <= pos + removedSize) {
+            // deletion occurred before viewport and partially into it, so update the item index
+            return new StartOffStart(itemIndex - removedSize + addedSize, offsetFromStart);
         } else if(itemIndex >= pos) {
             // target item deleted, show the first inserted at the target offset
             return new StartOffStart(pos, offsetFromStart);