bootstrap-vue/src/mixins/form.js

With more than 85 components, over 45 available plugins, several directives, and 1000+ icons, BootstrapVue provides one of the most comprehensive implementations of the Bootstrap v4 component and grid system available for Vue.js v2.6, complete with extens

import { attemptFocus, isVisible, matches, requestAF, select } from '../utils/dom'

const SELECTOR = 'input, textarea, select'

// @vue/component
export default {
  props: {
    name: {
      type: String
      // default: undefined
    },
    id: {
      type: String
      // default: undefined
    },
    disabled: {
      type: Boolean
    },
    required: {
      type: Boolean,
      default: false
    },
    form: {
      type: String
      // default: null
    },
    autofocus: {
      type: Boolean,
      default: false
    }
  },
  mounted() {
    this.handleAutofocus()
  },
  /* istanbul ignore next */
  activated() {
    this.handleAutofocus()
  },
  methods: {
    handleAutofocus() {
      this.$nextTick(() => {
        requestAF(() => {
          let el = this.$el
          if (this.autofocus && isVisible(el)) {
            if (!matches(el, SELECTOR)) {
              el = select(SELECTOR, el)
            }
            attemptFocus(el)
          }
        })
      })
    }
  }
}