Update component config

[aliabid94]

Allow users to update component config parameter with gr.update() or with component gr.Textbox.update(). Changed backend to provide type hints and validation so users can't pass bad parameters.

Valid formats:

• gr.update(lines=5)
• gr.Textbox.update(lines=5)
• gr.Textbox.update(lines=5, value='hello')

See blocks_update/run.py for example

Also:

• Added support for visibility changes.
• Renamed get_template_context to get_config.

[abidlabs]

Can we have the behavior that setting the value of a component to None hides the component? This is already the case with some components (like Label I think) and it would be good to have uniform behavior across the components and provide a simple way of addressing #784

[abidlabs]

Can we have the behavior that setting the value of a component to None hides the component? This is already the case with some components (like Label I think) and it would be good to have uniform behavior across the components and provide a simple way of addressing #784

I talked about this some more with @aliabid94 and we felt it would be better to actually just have a property for every component called visible that you could change using this approach

Note that some components (e.g. Label already have the behavior that if you pass None to them, they disappear. We should probably change that)

[abidlabs]

Tests need to be updated + see my comments above.

Other than that, works amazing!

[pngwn]

Looks great 👍

[omerXfaruq]

Good work!

[omerXfaruq]

Created the different approach suggestion in #1211 you could drop your thoughts there. @aliabid94