feat: Add trigger_on_enter parameter to ui.inline #372

[sherrychen2]

This PR adds a new trigger_on_enter parameter to ui.inline that allows users to press the Enter key to submit the form in textbox.tsx.

The feature is showcased in textbox.py by adding a ui.textbox that submits when pressing the Enter key:

ui.textbox(name='textbox_enter', label='Submit the form when pressing the Enter key', trigger_on_enter=True),

Screenshot.2022-12-08.at.22.16.39.mov

Unit tests were added in textbox.test.tsx as follows:

it('Doesn\'t submit when the Enter key is pressed by default', () => {
   const { getByTestId } = render(<XTextbox model={{ ...textboxProps }} />)
   userEvent.type(getByTestId(name), '123{Enter}')
   expect(pushMock).not.toBeCalled()
 })

it('Submits when the Enter key is pressed using the trigger_on_enter option', () => {
   const { getByTestId } = render(<XTextbox model={{ ...textboxProps, trigger_on_enter: true }} />)
   userEvent.type(getByTestId(name), '123{Enter}')
   expect(pushMock).toBeCalled()
 })

Closes #372.

[mturoci]

Thanks @sherrychen2. We need to discuss this with @lo5 and get back to you, but the implementation will most likely need to be adhered to #348 (comment) instead of introducing a new trigger_on_enter attr.