fix: combobox onMouseDown event default behavior (#1042)

src/Selector/index.tsx

@@ -109,6 +109,7 @@ const Selector: React.ForwardRefRenderFunction<RefSelectorProps, SelectorProps>
     mode,
     showSearch,
     tokenWithEnter,
+    disabled,
 
     autoClearSearchValue,
 
@@ -228,9 +229,10 @@ const Selector: React.ForwardRefRenderFunction<RefSelectorProps, SelectorProps>
   const onMouseDown: React.MouseEventHandler<HTMLElement> = (event) => {
     const inputMouseDown = getInputMouseDown();
 
-    // when mode is combobox, don't prevent default behavior
+    // when mode is combobox and it is disabled, don't prevent default behavior
     // https://github.com/ant-design/ant-design/issues/37320
-    if (event.target !== inputRef.current && !inputMouseDown && mode !== 'combobox') {
+    // https://github.com/ant-design/ant-design/issues/48281
+    if (event.target !== inputRef.current && !inputMouseDown && !(mode === 'combobox' && disabled)) {
       event.preventDefault();
     }
 

tests/Combobox.test.tsx

@@ -1,7 +1,7 @@
 /* eslint-disable max-classes-per-file */
 
 import '@testing-library/jest-dom';
-import { fireEvent, render } from '@testing-library/react';
+import { createEvent, fireEvent, render } from '@testing-library/react';
 import KeyCode from 'rc-util/lib/KeyCode';
 import { resetWarned } from 'rc-util/lib/warning';
 import React, { act } from 'react';
@@ -604,4 +604,42 @@ describe('Select.Combobox', () => {
     const { container } = render(<Select mode="combobox" value={0} />);
     expect(container.querySelector('input')!.value).toBe('0');
   });
+
+  // https://github.com/ant-design/ant-design/issues/48281
+  describe('combobox mode onMouseDown event default behavior', () => {
+    it('should prevent default behavior when mode is combobox', () => {
+      const preventDefault = jest.fn();
+      const { container } = render(
+        <Select mode="combobox" value="1">
+          <Option value="1">1</Option>
+          <Option value="2">2</Option>
+        </Select>,
+      );
+
+      const selectorEle = container.querySelector('.rc-select-selector');
+
+      const mouseDownEvent = createEvent.mouseDown(selectorEle);
+      mouseDownEvent.preventDefault = preventDefault;
+      fireEvent(selectorEle, mouseDownEvent);
+      expect(preventDefault).toHaveBeenCalled();
+    })
+
+    it('should not prevent default behavior when mode is combobox and it is disabled', () => {
+      const preventDefault = jest.fn();
+      const { container } = render(
+        <Select mode="combobox" value="1" disabled>
+          <Option value="1">1</Option>
+          <Option value="2">2</Option>
+        </Select>,
+      );
+
+      const selectorEle = container.querySelector('.rc-select-selector');
+
+      const mouseDownEvent = createEvent.mouseDown(selectorEle);
+      mouseDownEvent.preventDefault = preventDefault;
+      fireEvent(selectorEle, mouseDownEvent);
+      expect(preventDefault).not.toHaveBeenCalled();
+    })
+  });
+
 });