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- /**
- * @license Copyright (c) 2003-2019, CKSource - Frederico Knabben. All rights reserved.
- * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
- */
- /* globals window, document */
- /**
- * Returns the `config.toolbar.viewportTopOffset` config value for editors using floating toolbars that
- * stick to the top of the viewport to remain visible to the user.
- *
- * The value is determined in styles by the `--ck-snippet-viewport-top-offset` custom property
- * and may differ e.g. according to the used media queries.
- *
- * @returns {Number} The value of the offset.
- */
- window.getViewportTopOffsetConfig = function() {
- const documentElement = document.documentElement;
- return parseInt( window.getComputedStyle( documentElement ).getPropertyValue( '--ck-snippet-viewport-top-offset' ) );
- };
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