Preact MultiSelect Dropdown Button accessible (A11y).

A port of react-multiselect-dropdown-button, however without CSS-in-JS (just ol' fashion CSS file).

A Dropdown Button which toggle a multi-select list. Preact component accessible (A11y). View Demo

• Easy use with keyboard navigation (Tab, selection with Space, Arrows Up, Down, Home and End for the list) following A11y guide of https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/listbox_role
• Callback function provided, to give selected items applied
• Can be used multi-language, as it receives text by props
• CSS classes provided in /dist/MultiSelect.css, for you to style as you wish

A11y notes

• In order to keep it fully accessible, make sure:
  • label does describe its associated input element: https://achecker.ca/checker/suggestion.php?id=189
  • the labels of each checkbox describes the purpose or function of it. https://achecker.ca/checker/suggestion.php?id=219

How to use

npm i preact-multiselect-button-dropdown

or

yarn add preact-multiselect-button-dropdown

and import in your app

import MultiSelect from "preact-multiselect-button-dropdown";

props

• list: Array<listItem> (required) listItem is: { label: PropTypes.string.isRequired, id: PropTypes.string.isRequired, name: PropTypes.string, checked: PropTypes.bool.isRequired }

  Provides a list of checkboxes to the component

• dropdownButtonText: string (required)

  The text for the button dropdown

• isRightAligned: boolean (optional)

  Used in order to align dropdown to the right of the button. The default is left aligned

• onOptionChanged (optionState) => {} (optional)

  A callback function to get the state of options selected/unselected.

• onSelectionApplied: (list) => {} (optional)

  A callback function to get the state of checkbox list. If this property is added, it activates the footer of the component, containing the "Apply" and "Reset" buttons

• selectAllButtonText: string (optional)

  The text to the select all button default: "Select All"

• resetButtonText: string (optional)

  The text to the reset button default: "Reset"

• applyButtonText: string (optional)

  The text to the apply button default: "Apply"

Example

import MultiSelect from 'preact-multiselect-button-dropdown';
import 'preact-multiselect-button-dropdown/dist/MultiSelect.css';

const props = {
    list: [
        {
            label: 'First option',
            name: 'first-option',
            id: 'first-option-1',
            checked: true
        },
        {
            label: 'Second option',
            name: 'second-option',
            id: 'second-option-2',
            checked: false
        },
        {
            label: 'Third option',
            name: 'third-option',
            id: 'third-option-3',
            checked: false
        }
    ],
    onSelectionApplied: selection => {
    console.log('Selected : ', selection);
    },
    dropdownButtonText: 'Selected',
    resetButtonText: 'Reset',
    applyButtonText: 'Apply'
};

<MultiSelect {...props} />