90 lines
2.4 KiB
JavaScript
90 lines
2.4 KiB
JavaScript
define( [
|
|
"../core",
|
|
"../var/document",
|
|
"../var/documentElement",
|
|
"../var/support"
|
|
], function( jQuery, document, documentElement, support ) {
|
|
|
|
"use strict";
|
|
|
|
( function() {
|
|
|
|
// Executing both pixelPosition & boxSizingReliable tests require only one layout
|
|
// so they're executed at the same time to save the second computation.
|
|
function computeStyleTests() {
|
|
|
|
// This is a singleton, we need to execute it only once
|
|
if ( !div ) {
|
|
return;
|
|
}
|
|
|
|
div.style.cssText =
|
|
"box-sizing:border-box;" +
|
|
"position:relative;display:block;" +
|
|
"margin:auto;border:1px;padding:1px;" +
|
|
"top:1%;width:50%";
|
|
div.innerHTML = "";
|
|
documentElement.appendChild( container );
|
|
|
|
var divStyle = window.getComputedStyle( div );
|
|
pixelPositionVal = divStyle.top !== "1%";
|
|
|
|
// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
|
|
reliableMarginLeftVal = divStyle.marginLeft === "2px";
|
|
boxSizingReliableVal = divStyle.width === "4px";
|
|
|
|
// Support: Android 4.0 - 4.3 only
|
|
// Some styles come back with percentage values, even though they shouldn't
|
|
div.style.marginRight = "50%";
|
|
pixelMarginRightVal = divStyle.marginRight === "4px";
|
|
|
|
documentElement.removeChild( container );
|
|
|
|
// Nullify the div so it wouldn't be stored in the memory and
|
|
// it will also be a sign that checks already performed
|
|
div = null;
|
|
}
|
|
|
|
var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
|
|
container = document.createElement( "div" ),
|
|
div = document.createElement( "div" );
|
|
|
|
// Finish early in limited (non-browser) environments
|
|
if ( !div.style ) {
|
|
return;
|
|
}
|
|
|
|
// Support: IE <=9 - 11 only
|
|
// 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:8px;height:0;top:0;left:-9999px;" +
|
|
"padding:0;margin-top:1px;position:absolute";
|
|
container.appendChild( div );
|
|
|
|
jQuery.extend( support, {
|
|
pixelPosition: function() {
|
|
computeStyleTests();
|
|
return pixelPositionVal;
|
|
},
|
|
boxSizingReliable: function() {
|
|
computeStyleTests();
|
|
return boxSizingReliableVal;
|
|
},
|
|
pixelMarginRight: function() {
|
|
computeStyleTests();
|
|
return pixelMarginRightVal;
|
|
},
|
|
reliableMarginLeft: function() {
|
|
computeStyleTests();
|
|
return reliableMarginLeftVal;
|
|
}
|
|
} );
|
|
} )();
|
|
|
|
return support;
|
|
|
|
} );
|