@gechiui/dom
Version:
DOM utilities module for GeChiUI.
24 lines (23 loc) • 863 B
JavaScript
/**
* Internal dependencies
*/
import { assertIsDefined } from '../utils/assert-is-defined';
/**
* 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.
*/
export default function documentHasTextSelection(doc) {
assertIsDefined(doc.defaultView, 'doc.defaultView');
const selection = doc.defaultView.getSelection();
assertIsDefined(selection, 'selection');
const range = selection.rangeCount ? selection.getRangeAt(0) : null;
return !!range && !range.collapsed;
}
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