fix: fix merge cell checkbox state update #3668

Author: Rui-Sun

common/changes/@visactor/vtable/fix-fix-merge-checkbox-state_2025-04-02-08-58.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@visactor/vtable",
+      "comment": "fix: fix merge cell checkbox state update #3668",
+      "type": "none"
+    }
+  ],
+  "packageName": "@visactor/vtable"
+}

packages/vtable/src/state/checkbox/checkbox.ts

@@ -12,6 +12,26 @@ export function setCheckedState(
   field: string | number,
   checked: boolean | 'indeterminate',
   state: StateManager
+) {
+  const table = state.table;
+  const cellRange = table.getCellRange(col, row);
+  if (cellRange.start.col !== cellRange.end.col || cellRange.start.row !== cellRange.end.row) {
+    for (let i = cellRange.start.col; i <= cellRange.end.col; i++) {
+      for (let j = cellRange.start.row; j <= cellRange.end.row; j++) {
+        setSingleCheckedState(i, j, field, checked, state);
+      }
+    }
+  } else {
+    setSingleCheckedState(col, row, field, checked, state);
+  }
+}
+
+function setSingleCheckedState(
+  col: number,
+  row: number,
+  field: string | number,
+  checked: boolean | 'indeterminate',
+  state: StateManager
 ) {
   const recordIndex = state.table.getRecordShowIndexByCell(col, row);
   if (recordIndex >= 0) {