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CSS: Add a support test for the hack for .css('marginRight') etc.

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This hack turns out to be needed by Android 4.0-4.3.

Add a support test so that the hack is invoked only where needed.

Refs 3747cc642a

Refs gh-1815
Refs gh-1820
Refs gh-1842
Closes gh-2061
This commit is contained in:
Michał Gołębiowski
2015-02-04 14:36:18 +01:00
parent 5e5489cea5
commit 25bc6809c5
3 changed files with 46 additions and 20 deletions
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49
src/css/support.js
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@@ -4,8 +4,7 @@ define([
], function( jQuery, support ) {
(function() {
// Minified: var b,c,d,e,f,g, h,i
var div, style, a, pixelPositionVal, boxSizingReliableVal,
var div, container, style, a, pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal,
reliableHiddenOffsetsVal, reliableMarginRightVal;
// Setup
@@ -33,21 +32,37 @@ define([
div.cloneNode( true ).style.backgroundClip = "";
support.clearCloneStyle = div.style.backgroundClip === "content-box";
container = document.createElement( "div" );
container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
"padding:0;margin-top:1px;position:absolute";
div.innerHTML = "";
container.appendChild( div );
jQuery.extend(support, {
reliableHiddenOffsets: function() {
if ( reliableHiddenOffsetsVal == null ) {
if ( pixelPositionVal == null ) {
computeStyleTests();
}
return reliableHiddenOffsetsVal;
},
boxSizingReliable: function() {
if ( boxSizingReliableVal == null ) {
// We're checking for pixelPositionVal here instead of boxSizingReliableVal
// since that compresses better and they're computed together anyway.
if ( pixelPositionVal == null ) {
computeStyleTests();
}
return boxSizingReliableVal;
},
pixelMarginRight: function() {
// Support: Android 4.0-4.3
if ( pixelPositionVal == null ) {
computeStyleTests();
}
return pixelMarginRightVal;
},
pixelPosition: function() {
if ( pixelPositionVal == null ) {
computeStyleTests();
@@ -55,9 +70,9 @@ define([
return pixelPositionVal;
},
// Support: Android 2.3
reliableMarginRight: function() {
if ( reliableMarginRightVal == null ) {
// Support: Android 2.3
if ( pixelPositionVal == null ) {
computeStyleTests();
}
return reliableMarginRightVal;
@@ -65,8 +80,7 @@ define([
});
function computeStyleTests() {
// Minified: var b,c,d,j
var div, container, contents,
var contents, divStyle,
body = document.body;
if ( !body || !body.style ) {
@@ -75,17 +89,16 @@ define([
}
// Setup
div = document.createElement( "div" );
container = document.createElement( "div" );
container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
body.appendChild( container ).appendChild( div );
body.appendChild( container );
div.style.cssText =
// Support: Android 2.3
// Vendor-prefix box-sizing
"-webkit-box-sizing:border-box;box-sizing:border-box;" +
"display:block;margin-top:1%;top:1%;" +
"border:1px;padding:1px;width:4px;position:absolute";
"position:absolute;display:block;" +
"margin:0;margin-top:1%;margin-right:50%;" +
"border:1px;padding:1px;" +
"top:1%;height:4px;width:50%";
// Support: IE<9
// Assume reasonable values in the absence of getComputedStyle
@@ -94,9 +107,10 @@ define([
// Check for getComputedStyle so that this code is not run in IE<9.
if ( window.getComputedStyle ) {
pixelPositionVal = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
boxSizingReliableVal =
( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";
divStyle = window.getComputedStyle( div, null );
pixelPositionVal = ( divStyle || {} ).top !== "1%";
boxSizingReliableVal = ( divStyle || { height: "4px" } ).height === "4px";
pixelMarginRightVal = ( divStyle || { marginRight: "4px" } ).marginRight === "4px";
// Support: Android 2.3
// Div with explicit width and no margin-right incorrectly
@@ -136,6 +150,7 @@ define([
reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
}
// Teardown
body.removeChild( container );
}