bootstrap-vue/src/components/nav/nav.js

BootstrapVue, with over 40 plugins and more than 75 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 { mergeData } from 'vue-functional-data-merge'

// -- Constants --

const DEPRECATED_MSG =
  'Setting prop "is-nav-bar" is deprecated. Use the <b-navbar-nav> component instead.'

export const props = {
  tag: {
    type: String,
    default: 'ul'
  },
  fill: {
    type: Boolean,
    default: false
  },
  justified: {
    type: Boolean,
    default: false
  },
  align: {
    type: String,
    default: null
  },
  tabs: {
    type: Boolean,
    default: false
  },
  pills: {
    type: Boolean,
    default: false
  },
  vertical: {
    type: Boolean,
    default: false
  },
  small: {
    type: Boolean,
    default: false
  },
  isNavBar: {
    type: Boolean,
    default: false,
    // `deprecated` -> Don't use this prop
    // `deprecation` -> Refers to a change in prop usage
    deprecated: DEPRECATED_MSG
  }
}

// -- Utils --

const computeJustifyContent = value => {
  // Normalize value
  value = value === 'left' ? 'start' : value === 'right' ? 'end' : value
  return `justify-content-${value}`
}

// @vue/component
export const BNav = /*#__PURE__*/ Vue.extend({
  name: 'BNav',
  functional: true,
  props,
  render(h, { props, data, children }) {
    return h(
      props.tag,
      mergeData(data, {
        class: {
          nav: !props.isNavBar,
          'navbar-nav': props.isNavBar,
          'nav-tabs': props.tabs && !props.isNavBar,
          'nav-pills': props.pills && !props.isNavBar,
          'flex-column': props.vertical && !props.isNavBar,
          'nav-fill': !props.vertical && props.fill,
          'nav-justified': !props.vertical && props.justified,
          [computeJustifyContent(props.align)]: !props.vertical && props.align,
          small: props.small
        }
      }),
      children
    )
  }
})

export default BNav