carbon-components
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Carbon Components is a component library for IBM Cloud
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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 _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
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 eventedState from '../../globals/js/mixins/evented-state';
import handles from '../../globals/js/mixins/handles';
import eventMatches from '../../globals/js/misc/event-matches';
import on from '../../globals/js/misc/on';
var ContentSwitcher = function (_mixin) {
_inherits(ContentSwitcher, _mixin);
/**
* Set of content switcher buttons.
* @extends CreateComponent
* @extends InitComponentBySearch
* @extends EventedState
* @extends Handles
* @param {HTMLElement} element The element working as a set of content switcher buttons.
* @param {Object} [options] The component options.
* @param {string} [options.selectorButton] The CSS selector to find switcher buttons.
* @param {string} [options.selectorButtonSelected] The CSS selector to find the selected switcher button.
* @param {string} [options.classActive] The CSS class for switcher button's selected state.
* @param {string} [options.eventBeforeSelected]
* The name of the custom event fired before a switcher button is selected.
* Cancellation of this event stops selection of content switcher button.
* @param {string} [options.eventAfterSelected] The name of the custom event fired after a switcher button is selected.
*/
function ContentSwitcher(element, options) {
_classCallCheck(this, ContentSwitcher);
var _this = _possibleConstructorReturn(this, (ContentSwitcher.__proto__ || Object.getPrototypeOf(ContentSwitcher)).call(this, element, options));
_this.manage(on(_this.element, 'click', function (event) {
_this._handleClick(event);
}));
return _this;
}
/**
* Handles click on content switcher button set.
* If the click is on a content switcher button, activates it.
* @param {Event} event The event triggering this method.
*/
_createClass(ContentSwitcher, [{
key: '_handleClick',
value: function _handleClick(event) {
var button = eventMatches(event, this.options.selectorButton);
if (button) {
this.changeState({
group: 'selected',
item: button,
launchingEvent: event
});
}
}
/**
* Internal method of {@linkcode ContentSwitcher#setActive .setActive()}, to select a content switcher button.
* @private
* @param {Object} detail The detail of the event trigging this action.
* @param {HTMLElement} detail.item The button to be selected.
* @param {Function} callback Callback called when change in state completes.
*/
}, {
key: '_changeState',
value: function _changeState(detail, callback) {
var _this2 = this;
var item = detail.item;
// `options.selectorLink` is not defined in this class itself, code here primary is for inherited classes
var itemLink = item.querySelector(this.options.selectorLink);
if (itemLink) {
[].concat(_toConsumableArray(this.element.querySelectorAll(this.options.selectorLink))).forEach(function (link) {
if (link !== itemLink) {
link.setAttribute('aria-selected', 'false');
}
});
itemLink.setAttribute('aria-selected', 'true');
}
var selectorButtons = [].concat(_toConsumableArray(this.element.querySelectorAll(this.options.selectorButton)));
selectorButtons.forEach(function (button) {
if (button !== item) {
button.setAttribute('aria-selected', false);
button.classList.toggle(_this2.options.classActive, false);
[].concat(_toConsumableArray(button.ownerDocument.querySelectorAll(button.dataset.target))).forEach(function (element) {
element.setAttribute('hidden', '');
element.setAttribute('aria-hidden', 'true');
});
}
});
item.classList.toggle(this.options.classActive, true);
item.setAttribute('aria-selected', true);
[].concat(_toConsumableArray(item.ownerDocument.querySelectorAll(item.dataset.target))).forEach(function (element) {
element.removeAttribute('hidden');
element.setAttribute('aria-hidden', 'false');
});
if (callback) {
callback();
}
}
/**
* Selects a content switcher button.
* If the selected button has `data-target` attribute, DOM elements it points to as a CSS selector will be shown.
* DOM elements associated with unselected buttons in the same way will be hidden.
* @param {HTMLElement} item The button to be selected.
* @param {ChangeState~callback} callback The callback is called once selection is finished
* or is canceled. Will only invoke callback if it's passed in.
*/
}, {
key: 'setActive',
value: function setActive(item, callback) {
this.changeState({
group: 'selected',
item: item
}, function (error) {
if (error) {
if (callback) {
callback(Object.assign(error, { item: item }));
}
} else if (callback) {
callback(null, item);
}
});
}
/**
* The map associating DOM element and content switcher set instance.
* @member ContentSwitcher.components
* @type {WeakMap}
*/
}], [{
key: 'options',
/**
* The component options.
* If `options` is specified in the constructor,
* {@linkcode ContentSwitcher.create .create()}, or {@linkcode ContentSwitcher.init .init()},
* properties in this object are overriden for the instance being create and how {@linkcode ContentSwitcher.init .init()} works.
* @member ContentSwitcher.options
* @type {Object}
* @property {string} selectorInit The CSS selector to find content switcher button set.
* @property {string} [selectorButton] The CSS selector to find switcher buttons.
* @property {string} [selectorButtonSelected] The CSS selector to find the selected switcher button.
* @property {string} [classActive] The CSS class for switcher button's selected state.
* @property {string} [eventBeforeSelected]
* The name of the custom event fired before a switcher button is selected.
* Cancellation of this event stops selection of content switcher button.
* @property {string} [eventAfterSelected] The name of the custom event fired after a switcher button is selected.
*/
get: function get() {
var prefix = settings.prefix;
return {
selectorInit: '[data-content-switcher]',
selectorButton: 'input[type="radio"], .' + prefix + '--content-switcher-btn',
classActive: prefix + '--content-switcher--selected',
eventBeforeSelected: 'content-switcher-beingselected',
eventAfterSelected: 'content-switcher-selected'
};
}
}]);
return ContentSwitcher;
}(mixin(createComponent, initComponentBySearch, eventedState, handles));
ContentSwitcher.components = new WeakMap();
export default ContentSwitcher;