You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
1.4 KiB
41 lines
1.4 KiB
"use strict";
|
|
|
|
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
|
|
|
|
exports.__esModule = true;
|
|
exports.default = scrollParent;
|
|
|
|
var _css = _interopRequireDefault(require("./css"));
|
|
|
|
var _height = _interopRequireDefault(require("./height"));
|
|
|
|
var _isDocument = _interopRequireDefault(require("./isDocument"));
|
|
|
|
/* eslint-disable no-cond-assign, no-continue */
|
|
|
|
/**
|
|
* Find the first scrollable parent of an element.
|
|
*
|
|
* @param element Starting element
|
|
* @param firstPossible Stop at the first scrollable parent, even if it's not currently scrollable
|
|
*/
|
|
function scrollParent(element, firstPossible) {
|
|
var position = (0, _css.default)(element, 'position');
|
|
var excludeStatic = position === 'absolute';
|
|
var ownerDoc = element.ownerDocument;
|
|
if (position === 'fixed') return ownerDoc || document; // @ts-ignore
|
|
|
|
while ((element = element.parentNode) && !(0, _isDocument.default)(element)) {
|
|
var isStatic = excludeStatic && (0, _css.default)(element, 'position') === 'static';
|
|
var style = ((0, _css.default)(element, 'overflow') || '') + ((0, _css.default)(element, 'overflow-y') || '') + (0, _css.default)(element, 'overflow-x');
|
|
if (isStatic) continue;
|
|
|
|
if (/(auto|scroll)/.test(style) && (firstPossible || (0, _height.default)(element) < element.scrollHeight)) {
|
|
return element;
|
|
}
|
|
}
|
|
|
|
return ownerDoc || document;
|
|
}
|
|
|
|
module.exports = exports["default"]; |