Fix: Update child's parent node when appending

raquo · Feb 1, 2020 · 33ef123 · 33ef123
1 parent 1b0be15
commit 33ef123
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/shared/src/main/scala/com/raquo/dombuilder/generic/nodes/ParentNode.scala b/shared/src/main/scala/com/raquo/dombuilder/generic/nodes/ParentNode.scala
@@ -23,7 +23,12 @@ trait ParentNode[N, +Ref <: BaseRef, BaseRef] extends Node[N, Ref, BaseRef] { th
     val appended = treeApi.appendChild(parent = this, child = child)
     if (appended) {
 
-      // 2. Update this node
+      // 2A. Update child's current parent node
+      child.maybeParent.foreach { childParent =>
+        childParent._maybeChildren.foreach(childParentChildren => childParentChildren -= child)
+      }
+
+      // 2B. Update this node
       if (_maybeChildren.isEmpty) {
         _maybeChildren = Some(mutable.Buffer(child))
       } else {