extract component

resources/assets/src/components/FileInput.tsx

@@ -0,0 +1,46 @@
+import React, { useRef } from 'react'
+import { t } from '@/scripts/i18n'
+import styles from './FileInput.module.scss'
+
+interface Props {
+  file: File | null
+  accept?: string
+  onChange(event: React.ChangeEvent<HTMLInputElement>): void
+}
+
+const FileInput: React.FC<Props> = props => {
+  const ref = useRef<HTMLInputElement>(null)
+
+  const handleClick = () => {
+    ref.current!.click()
+  }
+
+  return (
+    <div className="form-group">
+      <label htmlFor="select-file">{t('skinlib.upload.select-file')}</label>
+      <div className="input-group">
+        <div className="custom-file">
+          <input
+            type="file"
+            className="custom-file-input"
+            id="select-file"
+            accept={props.accept}
+            title={t('skinlib.upload.select-file')}
+            ref={ref}
+            onChange={props.onChange}
+          />
+          <label className={`custom-file-label ${styles.label}`}>
+            {props.file?.name}
+          </label>
+        </div>
+        <div className="input-group-append">
+          <button className="btn btn-default" onClick={handleClick}>
+            {t('skinlib.upload.select-file')}
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}
+
+export default FileInput

resources/assets/src/views/skinlib/Upload.tsx

@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useRef } from 'react'
+import React, { useState, useEffect } from 'react'
 import ReactDOM from 'react-dom'
 import { hot } from 'react-hot-loader/root'
 import { t } from '@/scripts/i18n'
@@ -7,8 +7,8 @@ import * as fetch from '@/scripts/net'
 import { showModal, toast } from '@/scripts/notify'
 import { isAlex } from '@/scripts/textureUtils'
 import { TextureType } from '@/scripts/types'
+import FileInput from '@/components/FileInput'
 import ViewerSkeleton from '@/components/ViewerSkeleton'
-import styles from './styles.module.scss'
 
 const Previewer = React.lazy(() => import('@/components/Viewer'))
 
@@ -21,7 +21,6 @@ const Upload: React.FC = () => {
   const [isUploading, setIsUploading] = useState(false)
   const [file, setFile] = useState<File | null>(null)
   const [texture, setTexture] = useState('')
-  const fileInput = useRef<HTMLInputElement>(null)
   const nameRule = useBlessingExtra<string>('rule')
   const contentPolicy = useBlessingExtra<string>('contentPolicy')
   const privacyNotice = useBlessingExtra<string>('privacyNotice')
@@ -51,11 +50,7 @@ const Upload: React.FC = () => {
     setIsPrivate(event.target.checked)
   }
 
-  const invokeSelectFile = () => {
-    fileInput.current!.click()
-  }
-
-  const handleSelectFile = async (
+  const handleFileChange = async (
     event: React.ChangeEvent<HTMLInputElement>,
   ) => {
     const files = event.target.files!
@@ -177,32 +172,11 @@ const Upload: React.FC = () => {
               {t('general.cape')}
             </label>
           </div>
-          <div className="form-group">
-            <label htmlFor="select-file">
-              {t('skinlib.upload.select-file')}
-            </label>
-            <div className="input-group">
-              <div className="custom-file">
-                <input
-                  type="file"
-                  className="custom-file-input"
-                  id="select-file"
-                  accept="image/png, image/x-png"
-                  title={t('skinlib.upload.select-file')}
-                  ref={fileInput}
-                  onChange={handleSelectFile}
-                />
-                <label className={`custom-file-label ${styles.label}`}>
-                  {file?.name}
-                </label>
-              </div>
-              <div className="input-group-append">
-                <button className="btn btn-default" onClick={invokeSelectFile}>
-                  {t('skinlib.upload.select-file')}
-                </button>
-              </div>
-            </div>
-          </div>
+          <FileInput
+            file={file}
+            accept="image/png, image/x-png"
+            onChange={handleFileChange}
+          />
 
           {contentPolicy && (
             <div

resources/assets/tests/components/FileInput.test.tsx

@@ -0,0 +1,25 @@
+import React from 'react'
+import { render, fireEvent } from '@testing-library/react'
+import { t } from '@/scripts/i18n'
+import FileInput from '@/components/FileInput'
+
+test('click to select file', () => {
+  const { getAllByText } = render(<FileInput file={null} onChange={() => {}} />)
+
+  fireEvent.click(getAllByText(t('skinlib.upload.select-file'))[1])
+})
+
+test('display file name', () => {
+  const file = new File([], 'f.txt')
+  const { queryByText } = render(<FileInput file={file} onChange={() => {}} />)
+  expect(queryByText('f.txt')).toBeInTheDocument()
+})
+
+test('input file', () => {
+  const mock = jest.fn()
+
+  const { getByLabelText } = render(<FileInput file={null} onChange={mock} />)
+  fireEvent.change(getByLabelText(t('skinlib.upload.select-file')))
+
+  expect(mock).toBeCalled()
+})

resources/assets/tests/views/skinlib/Upload.test.tsx

@@ -60,12 +60,6 @@ test('award notice', () => {
   ).not.toBeInTheDocument()
 })
 
-test('invoke selecting file', () => {
-  const { getAllByText } = render(<Upload />)
-
-  fireEvent.click(getAllByText(t('skinlib.upload.select-file'))[1])
-})
-
 describe('input file', () => {
   it('cancelled', () => {
     const { getByTitle } = render(<Upload />)