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Better `getUnboundedScrollPosition` for windows 

Instead of using browser sniffing, `getUnboundedScrollPosition` can do
better and not have to depend on the `getDocumentScrollElement` module.
This commit is contained in:
Tim Yung 2013-10-31 15:24:58 -07:00 committed by Paul O’Shannessy
parent a4f8ad1bb0
commit 0dc011c40c
2 changed files with 4 additions and 30 deletions
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27
src/vendor/core/dom/getDocumentScrollElement.js vendored
View File

@ -1,27 +0,0 @@
/**
* @providesModule getDocumentScrollElement
* @typechecks
*/
"use strict";
// TODO: Replace this with a UserAgent module.
var isWebkit = navigator.userAgent.indexOf('AppleWebKit') > -1;
/**
* Gets the element with the document scroll properties such as `scrollLeft` and
* `scrollHeight`. This may differ across different browsers.
*
* NOTE: The return value can be null if the DOM is not yet ready.
*
* @param {?DOMDocument} doc Defaults to current document.
* @return {?DOMElement}
*/
function getDocumentScrollElement(doc) {
doc = doc || document;
return !isWebkit && doc.compatMode === 'CSS1Compat' ?
doc.documentElement :
doc.body;
}
module.exports = getDocumentScrollElement;

7
src/vendor/core/dom/getUnboundedScrollPosition.js vendored
View File

@ -5,8 +5,6 @@
"use strict";
var getDocumentScrollElement = require('getDocumentScrollElement');
/**
* Gets the scroll position of the supplied element or window.
*
@ -19,7 +17,10 @@ var getDocumentScrollElement = require('getDocumentScrollElement');
*/
function getUnboundedScrollPosition(scrollable) {
if (scrollable === window) {
return getUnboundedScrollPosition(getDocumentScrollElement());
return {
x: document.documentElement.scrollLeft || document.body.scrollLeft,
y: document.documentElement.scrollTop || document.body.scrollTop
};
}
return {
x: scrollable.scrollLeft,