From 283899a07b200141e31cffe62d59354825c09b6f Mon Sep 17 00:00:00 2001
From: Uyarn <uyarnchen@gmail.com>
Date: Mon, 2 Dec 2024 21:14:55 +0800
Subject: [PATCH] fix(Tree): fix tree scroll to top when resize

---
 src/hooks/useVirtualScrollNew.ts | 2 ++
 src/tree/hooks/useTreeScroll.ts  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/hooks/useVirtualScrollNew.ts b/src/hooks/useVirtualScrollNew.ts
index 4ca901f219..ead790ee77 100644
--- a/src/hooks/useVirtualScrollNew.ts
+++ b/src/hooks/useVirtualScrollNew.ts
@@ -20,6 +20,7 @@ export type UseVirtualScrollParams = Ref<{
     /** 固定行（冻结行），示例：[M, N]，表示冻结头 M 行和尾 N 行。M 和 N 值为 0 时，表示不冻结行 */
     fixedRows?: Array<number>;
   };
+  preventResizeRefresh?: boolean;
 }>;
 
 export interface ScrollToElementParams {
@@ -170,6 +171,7 @@ const useVirtualScroll = (container: Ref<HTMLElement | null>, params: UseVirtual
 
   const refreshVirtualScroll = ([{ contentRect }]: [ResizeObserverEntry]) => {
     // 如果宽度发生变化，重置滚动位置
+    if (params.value.preventResizeRefresh) return;
     const maxScrollbarWidth = 16;
     if (Math.abs(contentRect.width - containerWidth.value) > maxScrollbarWidth && !!container.value) {
       container.value.scrollTop = 0;
diff --git a/src/tree/hooks/useTreeScroll.ts b/src/tree/hooks/useTreeScroll.ts
index e2e57509f5..7d0efdf9df 100644
--- a/src/tree/hooks/useTreeScroll.ts
+++ b/src/tree/hooks/useTreeScroll.ts
@@ -23,6 +23,7 @@ export default function useTreeScroll(state: TypeTreeState) {
     return {
       data: list,
       scroll: scrollProps.value,
+      preventResizeRefresh: true,
     };
   });
 
@@ -63,6 +64,7 @@ export default function useTreeScroll(state: TypeTreeState) {
     const isVirtual = virtualConfig?.isVirtualScroll.value;
     const target = (e.target || e.srcElement) as HTMLElement;
     const top = target.scrollTop;
+
     // 排除横向滚动触发的纵向虚拟滚动计算
     if (lastScrollY !== top) {
       if (isVirtual) {