Focus while upload.

src/snek/static/upload-button.js

@@ -49,6 +49,8 @@ class UploadButtonElement extends HTMLElement {
         };
 
         request.send(formData);
+        const uploadEvent = new Event('upload',{});
+        this.dispatchEvent(uploadEvent);
     }
     channelUid = null
     connectedCallback() {

src/snek/templates/web.html

@@ -42,7 +42,9 @@
                 }
             }
         });
-
+        document.querySelector("upload-button").addEventListener("upload",function(e){
+            getInputField().focus();
+        })
         textBox.addEventListener("paste", async (e) => {
             try {
                 const clipboardItems = await navigator.clipboard.read();