feat(multiselect): contextual 'select all' help text

[meowgorithm]

This revision changes the "toggle all" help text to "select all" and "select none" depending on what action will be performed.

select-all-select-none.mov

Here's the source code for the above example:

package main

import (
	"fmt"
	"os"

	"github.com/charmbracelet/huh"
)

func main() {
	prompt := huh.NewMultiSelect[int]().
		Title("Choose stuff, will ya?").
		Height(10).
		Options(
			huh.NewOption("Uno", 1),
			huh.NewOption("Due", 2),
			huh.NewOption("Tre", 3),
			huh.NewOption("Quattro", 4),
			huh.NewOption("Cinque", 5),
			huh.NewOption("Sei", 6),
			huh.NewOption("Sette", 7),
			huh.NewOption("Otto", 8),
			huh.NewOption("Nove", 9),
			huh.NewOption("Dieci", 10),
		)

	f := huh.NewForm(huh.NewGroup(prompt))

	if err := f.Run(); err != ni l {
		fmt.Fprint(os.Stderr, "Uh oh: ", err)
		os.Exit(1)
	}
}

[caarlos0]

noice

[maaslalani]

I wonder if we should add the number of options that will be selected in the help?

"select all 10 options"

This would be especially helpful with filtered lists.

[meowgorithm]

That's a really good idea, though I do worry about it getting too long (at 0:08 in the video help is getting quite long).