carbon-components/es/components/ui-shell/navigation-menu-panel.js

The Carbon Design System is IBM’s open-source design system for products and experiences.

function _typeof(obj) {
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function _classCallCheck(instance, Constructor) {
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function _defineProperties(target, props) {
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function _createClass(Constructor, protoProps, staticProps) {
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function _inherits(subClass, superClass) {
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function _setPrototypeOf(o, p) {
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function _createSuper(Derived) {
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function _possibleConstructorReturn(self, call) {
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function _assertThisInitialized(self) {
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function _isNativeReflectConstruct() {
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function _getPrototypeOf(o) {
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}
/**
 * Copyright IBM Corp. 2016, 2018
 *
 * This source code is licensed under the Apache-2.0 license found in the
 * LICENSE file in the root directory of this source tree.
 */


import mixin from '../../globals/js/misc/mixin';
import createComponent from '../../globals/js/mixins/create-component';
import initComponentByLauncher from '../../globals/js/mixins/init-component-by-launcher';
import eventedShowHideState from '../../globals/js/mixins/evented-show-hide-state';
import handles from '../../globals/js/mixins/handles';
import eventedState from '../../globals/js/mixins/evented-state';
import toggleAttribute from '../../globals/js/misc/toggle-attribute';
import settings from '../../globals/js/settings';

var NavigationMenuPanel = /*#__PURE__*/function (_mixin) {
  _inherits(NavigationMenuPanel, _mixin);

  var _super = _createSuper(NavigationMenuPanel);

  function NavigationMenuPanel() {
    var _this;

    _classCallCheck(this, NavigationMenuPanel);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _super.call.apply(_super, [this].concat(args));

    _this.createdByLauncher = function (event) {
      var isExpanded = !_this.element.hasAttribute('hidden');
      var newState = isExpanded ? 'collapsed' : 'expanded';
      _this.triggerButton = event.delegateTarget;

      _this.changeState(newState);
    };

    _this.shouldStateBeChanged = function (state) {
      return state === 'expanded' === _this.element.hasAttribute('hidden');
    };

    _this._changeState = function (state, callback) {
      toggleAttribute(_this.element, 'hidden', state !== 'expanded');

      if (_this.triggerButton) {
        if (state === 'expanded') {
          var focusableMenuItems = _this.element.querySelector(_this.options.selectorFocusableMenuItem);

          if (focusableMenuItems) {
            focusableMenuItems.focus();
          }
        }

        var label = state === 'expanded' ? _this.triggerButton.getAttribute(_this.options.attribLabelCollapse) : _this.triggerButton.getAttribute(_this.options.attribLabelExpand);

        _this.triggerButton.classList.toggle(_this.options.classNavigationMenuPanelHeaderActionActive, state === 'expanded');

        _this.triggerButton.setAttribute('aria-label', label);

        _this.triggerButton.setAttribute('title', label);
      }

      callback();
    };

    return _this;
  }

  _createClass(NavigationMenuPanel, null, [{
    key: "options",
    get:
    /**
     * The component options.
     * If `options` is specified in the constructor,
     * {@linkcode NavigationMenuPanel.create .create()}, or
     * {@linkcode NavigationMenuPanel.init .init()},
     * properties in this object are overridden for the instance being create and
     * how {@linkcode NavigationMenuPanel.init .init()} works.
     * @member NavigationMenuPanel.options
     * @type {object}
     * @property {string} selectorInit The CSS class to find popup navs.
     * @property {string} attribInitTarget The attribute name in the launcher buttons to find target popup nav.
     * @property {string[]} initEventNames The events that the component will handles
     */
    function get() {
      var prefix = settings.prefix;
      return {
        initEventNames: ['click'],
        eventBeforeExpanded: 'navigation-menu-being-expanded',
        eventAfterExpanded: 'navigation-menu-expanded',
        eventBeforeCollapsed: 'navigation-menu-being-collapsed',
        eventAfterCollapsed: 'navigation-menu-collapsed',
        selectorFocusableMenuItem: ".".concat(prefix, "--navigation__category-toggle, .").concat(prefix, "--navigation-link"),
        classNavigationMenuPanelHeaderActionActive: "".concat(prefix, "--header__action--active"),
        attribLabelExpand: 'data-navigation-menu-panel-label-expand',
        attribLabelCollapse: 'data-navigation-menu-panel-label-collapse'
      };
    }
  }]);

  NavigationMenuPanel.components = new WeakMap();
  return NavigationMenuPanel;
}(mixin(createComponent, initComponentByLauncher, eventedShowHideState, handles, eventedState));

export { NavigationMenuPanel as default };