Add a File.download() event

[ngaudemet]

Describe the bug

Thanks for the great job on gradio. The new Chatbot experience of 4.38 seems great.

However I can't upgrade (I'm still on gradio 4.29) since File.select doesn't work anymore.

I believe the bug was introduced in gradio 4.34 when you introduces file.delete in "add delete event to File component #8417".

When you click on a file to download it, it shoud launch a select event as it did before.
It is sometimes crucial to know in the back end what file the user tries to download.

Have you searched existing issues? 🔎

• I have searched and found no existing issues

Reproduction

import gradio as gr

with gr.Blocks() as demo:
    file = gr.File(value="graph.png")
    files = gr.File(value=["graph.png", "graph.png"], file_count="multiple")
    statement = gr.Textbox(value="No file selected.")

    def on_select(value, evt: gr.EventData):
        return f"The {evt.target} component was selected, and its value was {value}."

    file.select(on_select, file, statement)
    files.select(on_select, file, statement)
demo.launch()

Screenshot

in gradio 4.38.1 (not working)

in gradio 4.29.0 (working)

Logs

no logs

System Info

doesn't work on gradio 4.38.1
worked very well on gradio 4.29.0, seems to be broken since gradio 4.34.0

Severity

Blocking usage of gradio

[pngwn]

This was a bug sadly, so we cannot bring that behaviour back.

Would an additional download event work?

[ngaudemet]

Thanks pngwn for your answer.

The select event was not a bug according to me, since it was useful. (The bug was that deleting a file led to a select event, but not for the first file, so it was not consistent and not very understandable, which you corrected in creating the new delete event)

But yes, a download event or a select event would work, either one :)

thanks for you help!

Actually the select event is still documented in File docs.

[pngwn]

Actually ignore what I said. The select event should indeed fire.

Will see what we can do!

[ngaudemet]

Hello @pngwn how are you? Have you any news about this issue? Thanks a lot !

[abidlabs]

Closed via #9887