Function findScrollableParent

docs/app/js/sanddance-app.js:21575–21596

(startingElement)

    return _scrollbarWidth;
}
function findScrollableParent(startingElement) {
    var el = startingElement;
    var doc = (0, _getDocument.getDocument)(startingElement);
    // First do a quick scan for the scrollable attribute.
    while(el && el !== doc.body){
        if (el.getAttribute(DATA_IS_SCROLLABLE_ATTRIBUTE) === "true") return el;
        el = el.parentElement;
    }
    // If we haven't found it, the use the slower method: compute styles to evaluate if overflow is set.
    el = startingElement;
    while(el && el !== doc.body){
        if (el.getAttribute(DATA_IS_SCROLLABLE_ATTRIBUTE) !== "false") {
            var computedStyles = getComputedStyle(el);
            var overflowY = computedStyles ? computedStyles.getPropertyValue("overflow-y") : "";
            if (overflowY && (overflowY === "scroll" || overflowY === "auto")) return el;
        }
        el = el.parentElement;
    }
    // Fall back to window scroll.
    if (!el || el === doc.body) el = (0, _getWindow.getWindow)(startingElement);
    return el;
}

},{"./dom/getDocument":"bYcmK","@uifabric/merge-styles":"7c43M","./dom/getWindow":"8f64x","@parcel/transformer-js/src/esmodule-helpers.js":"jA2du"}],"bYcmK":[function(require,module,exports) {
var parcelHelpers = require("@parcel/transformer-js/src/esmodule-helpers.js");