c2n/web-componentsv0.0.6
GitHub repository

List

Vertical list container with single or multiple selection.

c2-list stacks c2-list-item rows and owns their selection: it compares each row’s value with its own value and marks the matching rows selected. A click updates value and fires selection-change with the values and each row’s data. multiple allows several rows, required keeps at least one, disabled freezes the whole list. The list is a listbox with a roving tabindex: Arrow Up/Down, Home and End move between rows, Enter and Space select, and typing a few letters jumps to the matching row. <hr> dividers and <h1>–<h6> headings can sit between rows to group them. Set --c2-list--max-height to make a long list scroll. It is also the dropdown inside c2-select.

Installation

npm install @c2n/list @c2n/list-item

Usage

const list = document.querySelector('c2-list')
list.addEventListener('selection-change', (event) => {
  console.log(event.detail.value) // ['bold', 'italic']
  console.log(event.detail.data) // the `data` property of each selected row, same order
})

Keyboard

KeyAction
TabFocuses the selected row (or the first enabled row)
Arrow Up / Arrow DownMoves focus to the previous / next enabled row
Home / EndMoves focus to the first / last enabled row
Enter / SpaceSelects the focused row (toggles it in a multiple list)
LettersJumps to the next row whose text starts with what you type
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