From 7c31c57f9b461a604ef25c57d4885ac8dd180c60 Mon Sep 17 00:00:00 2001
From: dzuo <68603119+dzuoo@users.noreply.github.com>
Date: Tue, 1 Jul 2025 11:12:19 +0800
Subject: [PATCH] feat(core): enhance elevate-edges-on-select to support direct
 edge selection

---
 packages/core/src/utils/edge.ts | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/packages/core/src/utils/edge.ts b/packages/core/src/utils/edge.ts
index eaecd2213..d58d15503 100644
--- a/packages/core/src/utils/edge.ts
+++ b/packages/core/src/utils/edge.ts
@@ -103,7 +103,14 @@ export function getEdgeZIndex(edge: GraphEdge, findNode: Actions['findNode'], el
   }
 
   if (elevateEdgesOnSelect) {
-    z = hasZIndex ? edge.zIndex! : Math.max(source.computedPosition.z || 0, target.computedPosition.z || 0)
+    const baseZ = hasZIndex ? edge.zIndex! : 0
+    const nodeBasedZ = Math.max(source.computedPosition.z || 0, target.computedPosition.z || 0)
+    const edgeSelectedZ = edge.selected ? 1000 : 0
+
+    // Take the maximum elevation to avoid double-stacking when both node and edge are selected
+    const elevationZ = Math.max(nodeBasedZ - baseZ, edgeSelectedZ)
+
+    z = baseZ + elevationZ
   }
 
   return z