From 22da99958ff512cf1b729706bbee3335161d13d4 Mon Sep 17 00:00:00 2001
From: Jordan Martinez <jordanalex.martinez@gmail.com>
Date: Mon, 27 Mar 2017 23:15:08 -0700
Subject: [PATCH] Another deletion option: before 1st visible cell & partially
 into viewport

---
 src/main/java/org/fxmisc/flowless/TargetPosition.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/fxmisc/flowless/TargetPosition.java b/src/main/java/org/fxmisc/flowless/TargetPosition.java
index 4e2d296..a9489a5 100644
--- 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);