From 6aaac7133fb980d98bf1d3de1b1b690a9ea0d6ab Mon Sep 17 00:00:00 2001
From: onenewcode <lovestudy@qq.com>
Date: Sat, 22 Aug 2026 12:58:28 +0800
Subject: [PATCH] fix(grid): unify long-cell double-click selection

---
 apps/desktop/src/composables/useDataGridEditor.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/desktop/src/composables/useDataGridEditor.ts b/apps/desktop/src/composables/useDataGridEditor.ts
index 09b48cdc99..fea18a6b52 100644
--- a/apps/desktop/src/composables/useDataGridEditor.ts
+++ b/apps/desktop/src/composables/useDataGridEditor.ts
@@ -358,7 +358,9 @@ export function useDataGridEditor(options: UseDataGridEditorOptions) {
       if (input) focusDataGridEditorWithoutScrolling(input, scroller);
       if (select && input) {
         if (input instanceof HTMLTextAreaElement && input.dataset.expandedCellEditor === "true") {
-          input.setSelectionRange?.(0, 0);
+          // Expanded editors must match single-line editors: a double-click selects the whole value.
+          input.select();
+          input.setSelectionRange?.(0, input.value.length);
           input.scrollTop = 0;
         } else {
           input.select();