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Dev: Update comments for browser feature detection

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This commit is contained in:
Allan Jardine 2013-02-01 10:29:03 +00:00
parent 415ce622c3
commit 10a0d7bd04
1 changed files with 8 additions and 6 deletions
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14
media/src/core/core.compat.js
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@ -100,17 +100,13 @@ function _fnLanguageCompat( oLanguage )
/** /**
* From some browsers (specifically IE6/7) we need special handling to work around browser * Browser feature detection for capabilities, quirks
* bugs - this function is used to detect when these workarounds are needed.
* @param {object} oSettings dataTables settings object * @param {object} oSettings dataTables settings object
* @memberof DataTable#oApi * @memberof DataTable#oApi
*/ */
function _fnBrowserDetect( oSettings ) function _fnBrowserDetect( oSettings )
{ {
/* IE6/7 will oversize a width 100% element inside a scrolling element, to include the // Scrolling feature / quirks detection
* width of the scrollbar, while other browsers ensure the inner element is contained
* without forcing scrolling
*/
var n = $( var n = $(
'<div style="position:absolute; top:0; left:0; height:1px; width:1px; overflow:hidden">'+ '<div style="position:absolute; top:0; left:0; height:1px; width:1px; overflow:hidden">'+
'<div style="position:absolute; top:1px; left:1px; width:100px; overflow:scroll;">'+ '<div style="position:absolute; top:1px; left:1px; width:100px; overflow:scroll;">'+
@ -119,7 +115,13 @@ function _fnBrowserDetect( oSettings )
'</div>')[0]; '</div>')[0];
document.body.appendChild( n ); document.body.appendChild( n );
// IE6/7 will oversize a width 100% element inside a scrolling element, to
// include the width of the scrollbar, while other browsers ensure the inner
// element is contained without forcing scrolling
oSettings.oBrowser.bScrollOversize = $('#DT_BrowserTest', n)[0].offsetWidth === 100 ? true : false; oSettings.oBrowser.bScrollOversize = $('#DT_BrowserTest', n)[0].offsetWidth === 100 ? true : false;
// In rtl text layout, some browsers (most, but not all) will place the
// scrollbar on the left, rather than the right.
oSettings.oBrowser.bScrollbarLeft = $('#DT_BrowserTest', n).offset().left !== 1 ? true : false; oSettings.oBrowser.bScrollbarLeft = $('#DT_BrowserTest', n).offset().left !== 1 ? true : false;
document.body.removeChild( n ); document.body.removeChild( n );
} }