bootstrap-vue/esm/components/navbar/navbar-toggle.js

BootstrapVue, with more than 85 custom components, over 45 plugins, several custom directives, and over 300 icons, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated W

import Vue from '../../utils/vue';
import { getComponentConfig } from '../../utils/config';
import { toString } from '../../utils/string';
import listenOnRootMixin from '../../mixins/listen-on-root';
import normalizeSlotMixin from '../../mixins/normalize-slot';
import { EVENT_TOGGLE, EVENT_STATE, EVENT_STATE_SYNC } from '../../directives/toggle/toggle'; // TODO:
//   Switch to using `VBToggle` directive, will reduce code footprint
//   Although the `click` event will no longer be cancellable
//   Instead add `disabled` prop, and have `VBToggle` check element
//   disabled state
// --- Constants ---

var NAME = 'BNavbarToggle';
var CLASS_NAME = 'navbar-toggler'; // --- Main component ---
// @vue/component

export var BNavbarToggle = /*#__PURE__*/Vue.extend({
  name: NAME,
  mixins: [listenOnRootMixin, normalizeSlotMixin],
  props: {
    label: {
      type: String,
      default: function _default() {
        return getComponentConfig(NAME, 'label');
      }
    },
    target: {
      type: String,
      required: true
    }
  },
  data: function data() {
    return {
      toggleState: false
    };
  },
  created: function created() {
    this.listenOnRoot(EVENT_STATE, this.handleStateEvt);
    this.listenOnRoot(EVENT_STATE_SYNC, this.handleStateEvt);
  },
  methods: {
    onClick: function onClick(evt) {
      this.$emit('click', evt);

      if (!evt.defaultPrevented) {
        this.emitOnRoot(EVENT_TOGGLE, this.target);
      }
    },
    handleStateEvt: function handleStateEvt(id, state) {
      if (id === this.target) {
        this.toggleState = state;
      }
    }
  },
  render: function render(h) {
    var expanded = this.toggleState;
    return h('button', {
      staticClass: CLASS_NAME,
      attrs: {
        type: 'button',
        'aria-label': this.label,
        'aria-controls': this.target,
        'aria-expanded': toString(expanded)
      },
      on: {
        click: this.onClick
      }
    }, [this.normalizeSlot('default', {
      expanded: expanded
    }) || h('span', {
      staticClass: "".concat(CLASS_NAME, "-icon")
    })]);
  }
});