bootstrap-vue/esm/components/nav/nav-item-dropdown.js

BootstrapVue, with over 40 plugins and more than 80 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

import Vue from '../../utils/vue';
import { props as BDropdownProps } from '../dropdown/dropdown';
import idMixin from '../../mixins/id';
import dropdownMixin from '../../mixins/dropdown';
import normalizeSlotMixin from '../../mixins/normalize-slot';
import pluckProps from '../../utils/pluck-props';
import { htmlOrText } from '../../utils/html';
import { BLink } from '../link/link'; // -- Constants --

export var props = pluckProps(['menuClass', 'toggleClass', 'noCaret', 'role'], BDropdownProps); // @vue/component

export var BNavItemDropdown =
/*#__PURE__*/
Vue.extend({
  name: 'BNavItemDropdown',
  mixins: [idMixin, dropdownMixin, normalizeSlotMixin],
  props: props,
  computed: {
    isNav: function isNav() {
      // Signal to dropdown mixin that we are in a navbar
      return true;
    },
    dropdownClasses: function dropdownClasses() {
      return [this.directionClass, {
        show: this.visible
      }];
    },
    menuClasses: function menuClasses() {
      return [this.menuClass, {
        'dropdown-menu-right': this.right,
        show: this.visible
      }];
    },
    toggleClasses: function toggleClasses() {
      return [this.toggleClass, {
        'dropdown-toggle-no-caret': this.noCaret
      }];
    }
  },
  render: function render(h) {
    var button = h(BLink, {
      ref: 'toggle',
      staticClass: 'nav-link dropdown-toggle',
      class: this.toggleClasses,
      props: {
        href: '#',
        disabled: this.disabled
      },
      attrs: {
        id: this.safeId('_BV_button_'),
        'aria-haspopup': 'true',
        'aria-expanded': this.visible ? 'true' : 'false'
      },
      on: {
        click: this.toggle,
        keydown: this.toggle // space, enter, down

      }
    }, [this.$slots['button-content'] || this.$slots.text || h('span', {
      domProps: htmlOrText(this.html, this.text)
    })]);
    var menu = h('ul', {
      staticClass: 'dropdown-menu',
      class: this.menuClasses,
      ref: 'menu',
      attrs: {
        tabindex: '-1',
        'aria-labelledby': this.safeId('_BV_button_')
      },
      on: {
        keydown: this.onKeydown // up, down, esc

      }
    }, !this.lazy || this.visible ? this.normalizeSlot('default', {
      hide: this.hide
    }) : [h()]);
    return h('li', {
      staticClass: 'nav-item b-nav-dropdown dropdown',
      class: this.dropdownClasses,
      attrs: {
        id: this.safeId()
      }
    }, [button, menu]);
  }
});