all files / popper/utils/ getPosition.js

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import getOffsetParent from './getOffsetParent';
import isFixed from './isFixed';
 
/**
 * Helper used to get the position which will be applied to the popper
 * @method
 * @memberof Popper.Utils
 * @param config {HTMLElement} popper element
 * @returns {HTMLElement} reference element
 */
export default function getPosition(element) {
    const container = getOffsetParent(element);
 
    // Decide if the popper will be fixed
    // If the reference element is inside a fixed context, the popper will be fixed as well to allow them to scroll together
    const isParentFixed = isFixed(container);
    return isParentFixed ? 'fixed' : 'absolute';
}