bootstrap-vue/esm/mixins/focus-in.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 { EVENT_OPTIONS_NO_CAPTURE, eventOn, eventOff } from '../utils/events'; // @vue/component

export default {
  data: function data() {
    return {
      listenForFocusIn: false
    };
  },
  watch: {
    listenForFocusIn: function listenForFocusIn(newValue, oldValue) {
      if (newValue !== oldValue) {
        eventOff(this.focusInElement, 'focusin', this._focusInHandler, EVENT_OPTIONS_NO_CAPTURE);

        if (newValue) {
          eventOn(this.focusInElement, 'focusin', this._focusInHandler, EVENT_OPTIONS_NO_CAPTURE);
        }
      }
    }
  },
  beforeCreate: function beforeCreate() {
    // Declare non-reactive properties
    this.focusInElement = null;
  },
  mounted: function mounted() {
    if (!this.focusInElement) {
      this.focusInElement = document;
    }

    if (this.listenForFocusIn) {
      eventOn(this.focusInElement, 'focusin', this._focusInHandler, EVENT_OPTIONS_NO_CAPTURE);
    }
  },
  beforeDestroy: function beforeDestroy()
  /* istanbul ignore next */
  {
    eventOff(this.focusInElement, 'focusin', this._focusInHandler, EVENT_OPTIONS_NO_CAPTURE);
  },
  methods: {
    _focusInHandler: function _focusInHandler(evt) {
      if (this.focusInHandler) {
        this.focusInHandler(evt);
      }
    }
  }
};