bootstrap-vue/src/mixins/click-out.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 { contains, eventOff, eventOn } from '../utils/dom'

// @vue/component
export default {
  data() {
    return {
      listenForClickOut: false
    }
  },
  watch: {
    listenForClickOut(newValue, oldValue) {
      if (newValue !== oldValue) {
        eventOff(this.clickOutElement, this.clickOutEventName, this._clickOutHandler, false)
        if (newValue) {
          eventOn(this.clickOutElement, this.clickOutEventName, this._clickOutHandler, false)
        }
      }
    }
  },
  beforeCreate() {
    // Declare non-reactive properties
    this.clickOutElement = null
    this.clickOutEventName = null
  },
  mounted() {
    if (!this.clickOutElement) {
      this.clickOutElement = document
    }
    if (!this.clickOutEventName) {
      this.clickOutEventName = 'ontouchstart' in document.documentElement ? 'touchstart' : 'click'
    }
    if (this.listenForClickOut) {
      eventOn(this.clickOutElement, this.clickOutEventName, this._clickOutHandler, false)
    }
  },
  beforeDestroy() /* istanbul ignore next */ {
    eventOff(this.clickOutElement, this.clickOutEventName, this._clickOutHandler, false)
  },
  methods: {
    isClickOut(evt) {
      return !contains(this.$el, evt.target)
    },
    _clickOutHandler(evt) {
      if (this.clickOutHandler && this.isClickOut(evt)) {
        this.clickOutHandler(evt)
      }
    }
  }
}