From 43c41e7ed29314629bc2b4f7a023205fa4fc6fe8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=A1=97=E8=A7=92=E5=B0=8F=E6=9E=97?= <1013335014@qq.com>
Date: Wed, 26 Mar 2025 11:56:57 +0800
Subject: [PATCH] =?UTF-8?q?Feat=EF=BC=9A=E5=8F=AA=E8=AF=BB=E6=A8=A1?=
 =?UTF-8?q?=E5=BC=8F=E4=B8=8B=E8=8A=82=E7=82=B9=E5=AE=9E=E4=BE=8B=E4=B8=8D?=
 =?UTF-8?q?=E4=BF=9D=E5=AD=98nodeDataSnapshot=E6=95=B0=E6=8D=AE?=
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---
 simple-mind-map/src/core/render/node/MindMapNode.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/simple-mind-map/src/core/render/node/MindMapNode.js b/simple-mind-map/src/core/render/node/MindMapNode.js
index 34148a8a..3cf924f8 100644
--- a/simple-mind-map/src/core/render/node/MindMapNode.js
+++ b/simple-mind-map/src/core/render/node/MindMapNode.js
@@ -475,8 +475,12 @@ class MindMapNode {
       return
     }
     this.updateNodeActiveClass()
-    const { alwaysShowExpandBtn, notShowExpandBtn, isShowCreateChildBtnIcon } =
-      this.mindMap.opt
+    const {
+      alwaysShowExpandBtn,
+      notShowExpandBtn,
+      isShowCreateChildBtnIcon,
+      readonly
+    } = this.mindMap.opt
     const childrenLength = this.getChildrenLength()
     // 不显示展开收起按钮则不需要处理
     if (!notShowExpandBtn) {
@@ -522,7 +526,7 @@ class MindMapNode {
     // 更新节点位置
     const t = this.group.transform()
     // 保存一份当前节点数据快照
-    this.nodeDataSnapshot = JSON.stringify(this.getData())
+    this.nodeDataSnapshot = readonly ? '' : JSON.stringify(this.getData())
     // 节点位置变化才更新，因为即使值没有变化属性设置操作也是耗时的
     if (this.left !== t.translateX || this.top !== t.translateY) {
       this.group.translate(this.left - t.translateX, this.top - t.translateY)