Default Toggle Group for Svelte

With multiple selection, each item is pressed or not on its own, like a set of checkboxes: bold and italic can both be on. With single selection, pressing one item releases the others, like radio buttons, which suits a choice such as text alignment in the Single Selection Toggle Group example. Add multiple for multiple selection; without it, the group allows one pressed item.

The group's spacing sets the gap between items, and it defaults to 2, so each item is a separate button. Set spacing to 0 to join them into one segmented bar: the touching corners square off, and with the outline variant the items share their borders.

Keep the pressed values in your own state and pass them back to the group, so other parts of the page can read or set the formatting. value is an array of item values; onValueChange receives details.value.

Yes. Keep the options in an array of objects, each with a value, a label and an icon, and render one ToggleGroupItem per entry with the label as its aria-label. Adding or removing an option is then a change to the data, and you can filter the array, for example to the formats a user is allowed to apply.

Listen to the group's change event or control its value; the pressed items come as a list of their values, empty when nothing is pressed, so checking whether bold is on is a lookup in that list. For a form, keep the value in state and submit it from there.

Yes. The group is a single Tab stop; the arrow keys move between items, and Space or Enter presses the focused item. Each item is announced with its aria-label and whether it's pressed, and the group itself has an aria-label, Text formatting, so the toolbar has a name.