@gechiui/dom/build/dom/document-has-text-selection.js

DOM utilities module for GeChiUI.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = documentHasTextSelection;

var _assertIsDefined = require("../utils/assert-is-defined");

/**
 * Internal dependencies
 */

/**
 * Check whether the current document has selected text. This applies to ranges
 * of text in the document, and not selection inside `<input>` and `<textarea>`
 * elements.
 *
 * See: https://developer.mozilla.org/en-US/docs/Web/API/Window/getSelection#Related_objects.
 *
 * @param {Document} doc The document to check.
 *
 * @return {boolean} True if there is selection, false if not.
 */
function documentHasTextSelection(doc) {
  (0, _assertIsDefined.assertIsDefined)(doc.defaultView, 'doc.defaultView');
  const selection = doc.defaultView.getSelection();
  (0, _assertIsDefined.assertIsDefined)(selection, 'selection');
  const range = selection.rangeCount ? selection.getRangeAt(0) : null;
  return !!range && !range.collapsed;
}
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