Send a browser notification when the images are ready

modules/ui.py

@@ -875,6 +875,14 @@ def create_ui(txt2img, img2img, run_extras, run_pnginfo):
             outputs=[result]
         )
 
+        request_notifications = gr.Button(value='Request browser notifications')
+        request_notifications.click(
+            fn=lambda: None,
+            inputs=[],
+            outputs=[],
+            _js='() => Notification.requestPermission()'
+        )
+
     interfaces = [
         (txt2img_interface, "txt2img", "txt2img"),
         (img2img_interface, "img2img", "img2img"),