carbon-components
Version:
Carbon Components is a component library for IBM Cloud
127 lines (102 loc) • 5.25 kB
JavaScript
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
import settings from '../../globals/js/settings';
import mixin from '../../globals/js/misc/mixin';
import createComponent from '../../globals/js/mixins/create-component';
import initComponentBySearch from '../../globals/js/mixins/init-component-by-search';
import handles from '../../globals/js/mixins/handles';
import eventMatches from '../../globals/js/misc/event-matches';
import on from '../../globals/js/misc/on';
var Accordion = function (_mixin) {
_inherits(Accordion, _mixin);
/**
* Accordion.
* @extends CreateComponent
* @extends InitComponentBySearch
* @extends Handles
* @param {HTMLElement} element The element working as an accordion.
*/
function Accordion(element, options) {
_classCallCheck(this, Accordion);
var _this = _possibleConstructorReturn(this, (Accordion.__proto__ || Object.getPrototypeOf(Accordion)).call(this, element, options));
_this.manage(on(_this.element, 'click', function (event) {
var item = eventMatches(event, _this.options.selectorAccordionItem);
if (item && !eventMatches(event, _this.options.selectorAccordionContent)) {
_this._toggle(item);
}
}));
/**
*
* DEPRECATE in v8
*
* Swapping to a button elemenet instead of a div
* automatically maps click events to keypress as well
* This event listener now is only added if user is using
* the older markup
*/
if (!_this._checkIfButton()) {
_this.manage(on(_this.element, 'keypress', function (event) {
var item = eventMatches(event, _this.options.selectorAccordionItem);
if (item && !eventMatches(event, _this.options.selectorAccordionContent)) {
_this._handleKeypress(event);
}
}));
}
return _this;
}
_createClass(Accordion, [{
key: '_checkIfButton',
value: function _checkIfButton() {
return this.element.firstElementChild.firstElementChild.nodeName === 'BUTTON';
}
/**
* Handles toggling of active state of accordion via keyboard
* @param {Event} event The event triggering this method.
*/
}, {
key: '_handleKeypress',
value: function _handleKeypress(event) {
if (event.which === 13 || event.which === 32) {
this._toggle(event.target);
}
}
}, {
key: '_toggle',
value: function _toggle(element) {
var heading = element.querySelector(this.options.selectorAccordionItemHeading);
var expanded = heading.getAttribute('aria-expanded');
if (expanded !== null) {
heading.setAttribute('aria-expanded', expanded === 'true' ? 'false' : 'true');
}
element.classList.toggle(this.options.classActive);
}
/**
* The component options.
* If `options` is specified in the constructor,
* {@linkcode NumberInput.create .create()}, or {@linkcode NumberInput.init .init()},
* properties in this object are overriden for the instance being create and how {@linkcode NumberInput.init .init()} works.
* @property {string} selectorInit The CSS selector to find accordion UIs.
*/
}], [{
key: 'options',
get: function get() {
var prefix = settings.prefix;
return {
selectorInit: '[data-accordion]',
selectorAccordionItem: '.' + prefix + '--accordion__item',
selectorAccordionItemHeading: '.' + prefix + '--accordion__heading',
selectorAccordionContent: '.' + prefix + '--accordion__content',
classActive: prefix + '--accordion__item--active'
};
}
/**
* The map associating DOM element and accordion UI instance.
* @type {WeakMap}
*/
}]);
return Accordion;
}(mixin(createComponent, initComponentBySearch, handles));
Accordion.components = new WeakMap();
export default Accordion;