Add variant for file-selector-button pseudo element

Also includes fallback styles for -webkit-file-upload-button for fuller browser support.

Author: lukewarlow

src/jit/corePlugins.js

@@ -61,6 +61,25 @@ export default {
       }),
     ])
 
+    addVariant('file-selector-button', [
+      transformAllSelectors((selector) => {
+        return updateAllClasses(selector, (className, { withPseudo }) => {
+          return withPseudo(
+            `file-selector-button${config('separator')}${className}`,
+            '::file-selector-button'
+          )
+        })
+      }),
+      transformAllSelectors((selector) => {
+        return updateAllClasses(selector, (className, { withPseudo }) => {
+          return withPseudo(
+            `file-selector-button${config('separator')}${className}`,
+            '::-webkit-file-upload-button'
+          )
+        })
+      }),
+    ])
+
     addVariant(
       'before',
       transformAllSelectors(

tests/jit/variants.test.css

@@ -156,6 +156,22 @@
   --tw-text-opacity: 1;
   color: rgba(255, 255, 255, var(--tw-text-opacity));
 }
+.file-selector-button\:bg-blue-500::file-selector-button {
+  --tw-bg-opacity: 1;
+  background-color: rgba(59, 130, 246, var(--tw-bg-opacity));
+}
+.file-selector-button\:text-white::file-selector-button {
+  --tw-text-opacity: 1;
+  color: rgba(255, 255, 255, var(--tw-text-opacity));
+}
+.file-selector-button\:bg-blue-500::-webkit-file-upload-button {
+  --tw-bg-opacity: 1;
+  background-color: rgba(59, 130, 246, var(--tw-bg-opacity));
+}
+.file-selector-button\:text-white::-webkit-file-upload-button {
+  --tw-text-opacity: 1;
+  color: rgba(255, 255, 255, var(--tw-text-opacity));
+}
 .before\:block::before {
   content: '';
   display: block;

tests/jit/variants.test.html

@@ -45,6 +45,7 @@
       <li class="marker:text-red-500 marker:text-lg"></li>
     </ul>
     <div class="selection:bg-blue-500 selection:text-white"></div>
+    <div class="file-selector-button:bg-blue-500 file-selector-button:text-white"></div>
     <div class="before:block before:bg-red-500"></div>
     <div class="after:flex after:uppercase"></div>