From e03d6c23ec4353b84ee41892f88105ee0683dc27 Mon Sep 17 00:00:00 2001
From: moklick <info@moritzklack.com>
Date: Thu, 16 Jun 2022 11:59:52 +0200
Subject: [PATCH] fix(selection): only calculate selection box if selected
 nodes > 0

---
 example/src/Layouting/index.tsx | 9 ++++++++-
 src/utils/graph.ts              | 4 ++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/example/src/Layouting/index.tsx b/example/src/Layouting/index.tsx
index 88170feb..8e4ce5bf 100644
--- a/example/src/Layouting/index.tsx
+++ b/example/src/Layouting/index.tsx
@@ -59,6 +59,10 @@ const LayoutFlow = () => {
     setNodes(layoutedNodes);
   };
 
+  const unselect = () => {
+    setNodes((nds) => nds.map((n) => ({ ...n, selected: false })));
+  };
+
   return (
     <div className="layoutflow">
       <ReactFlowProvider>
@@ -77,7 +81,10 @@ const LayoutFlow = () => {
           <button onClick={() => onLayout('TB')} style={{ marginRight: 10 }}>
             vertical layout
           </button>
-          <button onClick={() => onLayout('LR')}>horizontal layout</button>
+          <button onClick={() => onLayout('LR')} style={{ marginRight: 10 }}>
+            horizontal layout
+          </button>
+          <button onClick={() => unselect()}>unselect nodes</button>
         </div>
       </ReactFlowProvider>
     </div>
diff --git a/src/utils/graph.ts b/src/utils/graph.ts
index 37765a01..a426baed 100644
--- a/src/utils/graph.ts
+++ b/src/utils/graph.ts
@@ -141,6 +141,10 @@ export const pointToRendererPoint = (
 };
 
 export const getRectOfNodes = (nodes: Node[]): Rect => {
+  if (nodes.length === 0) {
+    return { x: 0, y: 0, width: 0, height: 0 };
+  }
+
   const box = nodes.reduce(
     (currBox, { positionAbsolute, position, width, height }) =>
       getBoundsOfBoxes(