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- define([
- "../core",
- "../var/support"
- ], function( jQuery, support ) {
- (function() {
- var pixelPositionVal, boxSizingReliableVal,
- docElem = document.documentElement,
- container = document.createElement( "div" ),
- div = document.createElement( "div" );
- if ( !div.style ) {
- return;
- }
- // Support: IE9-11+
- // Style of cloned element affects source element cloned (#8908)
- div.style.backgroundClip = "content-box";
- div.cloneNode( true ).style.backgroundClip = "";
- support.clearCloneStyle = div.style.backgroundClip === "content-box";
- container.style.cssText = "border:0;width:0;height:0;top:0;left:-9999px;margin-top:1px;" +
- "position:absolute";
- container.appendChild( div );
- // Executing both pixelPosition & boxSizingReliable tests require only one layout
- // so they're executed at the same time to save the second computation.
- function computePixelPositionAndBoxSizingReliable() {
- div.style.cssText =
- // Support: Firefox<29, Android 2.3
- // Vendor-prefix box-sizing
- "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
- "box-sizing:border-box;display:block;margin-top:1%;top:1%;" +
- "border:1px;padding:1px;width:4px;position:absolute";
- div.innerHTML = "";
- docElem.appendChild( container );
- var divStyle = window.getComputedStyle( div, null );
- pixelPositionVal = divStyle.top !== "1%";
- boxSizingReliableVal = divStyle.width === "4px";
- docElem.removeChild( container );
- }
- // Support: node.js jsdom
- // Don't assume that getComputedStyle is a property of the global object
- if ( window.getComputedStyle ) {
- jQuery.extend( support, {
- pixelPosition: function() {
- // This test is executed only once but we still do memoizing
- // since we can use the boxSizingReliable pre-computing.
- // No need to check if the test was already performed, though.
- computePixelPositionAndBoxSizingReliable();
- return pixelPositionVal;
- },
- boxSizingReliable: function() {
- if ( boxSizingReliableVal == null ) {
- computePixelPositionAndBoxSizingReliable();
- }
- return boxSizingReliableVal;
- },
- reliableMarginRight: function() {
- // Support: Android 2.3
- // Check if div with explicit width and no margin-right incorrectly
- // gets computed margin-right based on width of container. (#3333)
- // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
- // This support function is only executed once so no memoizing is needed.
- var ret,
- marginDiv = div.appendChild( document.createElement( "div" ) );
- // Reset CSS: box-sizing; display; margin; border; padding
- marginDiv.style.cssText = div.style.cssText =
- // Support: Firefox<29, Android 2.3
- // Vendor-prefix box-sizing
- "-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
- "box-sizing:content-box;display:block;margin:0;border:0;padding:0";
- marginDiv.style.marginRight = marginDiv.style.width = "0";
- div.style.width = "1px";
- docElem.appendChild( container );
- ret = !parseFloat( window.getComputedStyle( marginDiv, null ).marginRight );
- docElem.removeChild( container );
- div.removeChild( marginDiv );
- return ret;
- }
- });
- }
- })();
- return support;
- });
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