bootstrap-vue/src/components/table/helpers/text-selection-active.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.

// Helper to determine if a there is an active text selection on the document page.
// Used to filter out click events caused by the mouse up at end of selection
//
// Accepts an element as only argument to test to see if selection overlaps or is
// contained within the element

import { isElement } from '../../../utils/dom'

export default function textSelectionActive(el = document) {
  const win = window
  /* istanbul ignore if: JSDOM doesn't support getSelection */
  if (win && win.getSelection && win.getSelection().toString() !== '' && isElement(el)) {
    /* istanbul ignore next: JSDOM doesn't support getSelection */
    const sel = win.getSelection()
    /* istanbul ignore next: JSDOM doesn't support getSelection */
    return sel.containsNode ? sel.containsNode(el, true) : false
  } else {
    return false
  }
}