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@kswlee

kswlee/gist:3183078

Created Jul 26, 2012
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Run tests that need a body at doc ready
// Run tests that need a body at doc ready
jQuery(function() {
var container, outer, inner, table, td, offsetSupport,
marginDiv, conMarginTop, style, html, positionTopLeftWidthHeight,
paddingMarginBorderVisibility, paddingMarginBorder,
body = document.getElementsByTagName("body")[0];
if ( !body ) {
// Return for frameset docs that don't have a body
return;
}
conMarginTop = 1;
paddingMarginBorder = "padding:0;margin:0;border:";
positionTopLeftWidthHeight = "position:absolute;top:0;left:0;width:1px;height:1px;";
paddingMarginBorderVisibility = paddingMarginBorder + "0;visibility:hidden;";
style = "style='" + positionTopLeftWidthHeight + paddingMarginBorder + "5px solid #000;";
html = "<div " + style + "display:block;'><div style='" + paddingMarginBorder + "0;display:block;overflow:hidden;'></div></div>" +
"<table " + style + "' cellpadding='0' cellspacing='0'>" +
"<tr><td></td></tr></table>";
container = document.createElement("div");
container.style.cssText = paddingMarginBorderVisibility + "width:0;height:0;position:static;top:0;margin-top:" + conMarginTop + "px";
body.insertBefore( container, body.firstChild );
// Construct the test element
div = document.createElement("div");
container.appendChild( div );
// Check if table cells still have offsetWidth/Height when they are set
// to display:none and there are still other visible table cells in a
// table row; if so, offsetWidth/Height are not reliable for use when
// determining if an element has been hidden directly using
// display:none (it is still safe to use offsets if a parent element is
// hidden; don safety goggles and see bug #4512 for more information).
// (only IE 8 fails this test)
div.innerHTML = "<table><tr><td style='" + paddingMarginBorder + "0;display:none'></td><td>t</td></tr></table>";
tds = div.getElementsByTagName( "td" );
isSupported = ( tds[ 0 ].offsetHeight === 0 );
tds[ 0 ].style.display = "";
tds[ 1 ].style.display = "none";
// Check if empty table cells still have offsetWidth/Height
// (IE <= 8 fail this test)
support.reliableHiddenOffsets = isSupported && ( tds[ 0 ].offsetHeight === 0 );
// Check if div with explicit width and no margin-right incorrectly
// gets computed margin-right based on width of container. For more
// info see bug #3333
// Fails in WebKit before Feb 2011 nightlies
// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
if ( window.getComputedStyle ) {
div.innerHTML = "";
marginDiv = document.createElement( "div" );
marginDiv.style.width = "0";
marginDiv.style.marginRight = "0";
div.style.width = "2px";
div.appendChild( marginDiv );
support.reliableMarginRight =
( parseInt( ( window.getComputedStyle( marginDiv, null ) || { marginRight: 0 } ).marginRight, 10 ) || 0 ) === 0;
}
if ( typeof div.style.zoom !== "undefined" ) {
// Check if natively block-level elements act like inline-block
// elements when setting their display to 'inline' and giving
// them layout
// (IE < 8 does this)
div.innerHTML = "";
div.style.width = div.style.padding = "1px";
div.style.border = 0;
div.style.overflow = "hidden";
div.style.display = "inline";
div.style.zoom = 1;
support.inlineBlockNeedsLayout = ( div.offsetWidth === 3 );
// Check if elements with layout shrink-wrap their children
// (IE 6 does this)
div.style.display = "block";
div.style.overflow = "visible";
div.innerHTML = "<div style='width:5px;'></div>";
support.shrinkWrapBlocks = ( div.offsetWidth !== 3 );
}
div.style.cssText = positionTopLeftWidthHeight + paddingMarginBorderVisibility;
div.innerHTML = html;
outer = div.firstChild;
inner = outer.firstChild;
td = outer.nextSibling.firstChild.firstChild;
offsetSupport = {
doesNotAddBorder: ( inner.offsetTop !== 5 ),
doesAddBorderForTableAndCells: ( td.offsetTop === 5 )
};
inner.style.position = "fixed";
inner.style.top = "20px";
// safari subtracts parent border width here which is 5px
offsetSupport.fixedPosition = ( inner.offsetTop === 20 || inner.offsetTop === 15 );
inner.style.position = inner.style.top = "";
outer.style.overflow = "hidden";
outer.style.position = "relative";
offsetSupport.subtractsBorderForOverflowNotVisible = ( inner.offsetTop === -5 );
offsetSupport.doesNotIncludeMarginInBodyOffset = ( body.offsetTop !== conMarginTop );
if ( window.getComputedStyle ) {
div.style.marginTop = "1%";
support.pixelMargin = ( window.getComputedStyle( div, null ) || { marginTop: 0 } ).marginTop !== "1%";
}
if ( typeof container.style.zoom !== "undefined" ) {
container.style.zoom = 1;
}
body.removeChild( container );
marginDiv = div = container = null;
jQuery.extend( support, offsetSupport );
});
return support;
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