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(function( jQuery ) {
jQuery.support = (function() {
var div = document.createElement( "div" ),
documentElement = document.documentElement,
all,
a,
select,
opt,
input,
marginDiv,
support,
fragment,
body,
bodyStyle,
tds,
events,
eventName,
i,
isSupported;
// Preliminary tests
div.setAttribute("className", "t");
div.innerHTML = " <link/><table></table><a href='/a' style='top:1px;float:left;opacity:.55;'>a</a><input type='checkbox'/>";
all = div.getElementsByTagName( "*" );
a = div.getElementsByTagName( "a" )[ 0 ];
// Can't get basic test support
if ( !all || !all.length || !a ) {
return {};
}
// First batch of supports tests
select = document.createElement( "select" );
opt = select.appendChild( document.createElement("option") );
input = div.getElementsByTagName( "input" )[ 0 ];
support = {
// IE strips leading whitespace when .innerHTML is used
leadingWhitespace: ( div.firstChild.nodeType === 3 ),
// Make sure that tbody elements aren't automatically inserted
// IE will insert them into empty tables
tbody: !div.getElementsByTagName( "tbody" ).length,
// Make sure that link elements get serialized correctly by innerHTML
// This requires a wrapper element in IE
htmlSerialize: !!div.getElementsByTagName( "link" ).length,
// Get the style information from getAttribute
// (IE uses .cssText instead)
style: /top/.test( a.getAttribute("style") ),
// Make sure that URLs aren't manipulated
// (IE normalizes it by default)
hrefNormalized: ( a.getAttribute( "href" ) === "/a" ),
// Make sure that element opacity exists
// (IE uses filter instead)
// Use a regex to work around a WebKit issue. See #5145
opacity: /^0.55$/.test( a.style.opacity ),
// Verify style float existence
// (IE uses styleFloat instead of cssFloat)
cssFloat: !!a.style.cssFloat,
// Make sure that if no value is specified for a checkbox
// that it defaults to "on".
// (WebKit defaults to "" instead)
checkOn: ( input.value === "on" ),
// Make sure that a selected-by-default option has a working selected property.
// (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
optSelected: opt.selected,
// Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
getSetAttribute: div.className !== "t",
// Will be defined later
submitBubbles: true,
changeBubbles: true,
focusinBubbles: false,
deleteExpando: true,
noCloneEvent: true,
inlineBlockNeedsLayout: false,
shrinkWrapBlocks: false,
reliableMarginRight: true
};
// Make sure checked status is properly cloned
input.checked = true;
support.noCloneChecked = input.cloneNode( true ).checked;
// Make sure that the options inside disabled selects aren't marked as disabled
// (WebKit marks them as disabled)
select.disabled = true;
support.optDisabled = !opt.disabled;
// Test to see if it's possible to delete an expando from an element
// Fails in Internet Explorer
try {
delete div.test;
} catch( e ) {
support.deleteExpando = false;
}
if ( !div.addEventListener && div.attachEvent && div.fireEvent ) {
div.attachEvent( "onclick", function click() {
// Cloning a node shouldn't copy over any
// bound event handlers (IE does this)
support.noCloneEvent = false;
div.detachEvent( "onclick", click );
});
div.cloneNode( true ).fireEvent( "onclick" );
}
// Check if a radio maintains it's value
// after being appended to the DOM
input = document.createElement("input");
input.value = "t";
input.setAttribute("type", "radio");
support.radioValue = input.value === "t";
input.setAttribute("checked", "checked");
div.appendChild( input );
fragment = document.createDocumentFragment();
fragment.appendChild( div.firstChild );
// WebKit doesn't clone checked state correctly in fragments
support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
div.innerHTML = "";
// Figure out if the W3C box model works as expected
div.style.width = div.style.paddingLeft = "1px";
// We use our own, invisible, body
body = document.createElement( "body" );
bodyStyle = {
visibility: "hidden",
width: 0,
height: 0,
border: 0,
margin: 0,
// Set background to avoid IE crashes when removing (#9028)
background: "none"
};
for ( i in bodyStyle ) {
body.style[ i ] = bodyStyle[ i ];
}
body.appendChild( div );
documentElement.insertBefore( body, documentElement.firstChild );
// Check if a disconnected checkbox will retain its checked
// value of true after appended to the DOM (IE6/7)
support.appendChecked = input.checked;
support.boxModel = div.offsetWidth === 2;
if ( "zoom" in div.style ) {
// 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.style.display = "inline";
div.style.zoom = 1;
support.inlineBlockNeedsLayout = ( div.offsetWidth === 2 );
// Check if elements with layout shrink-wrap their children
// (IE 6 does this)
div.style.display = "";
div.innerHTML = "<div style='width:4px;'></div>";
support.shrinkWrapBlocks = ( div.offsetWidth !== 2 );
}
div.innerHTML = "<table><tr><td style='padding:0;border:0;display:none'></td><td>t</td></tr></table>";
tds = div.getElementsByTagName( "td" );
// 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)
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 );
div.innerHTML = "";
// 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 ( document.defaultView && document.defaultView.getComputedStyle ) {
marginDiv = document.createElement( "div" );
marginDiv.style.width = "0";
marginDiv.style.marginRight = "0";
div.appendChild( marginDiv );
support.reliableMarginRight =
( parseInt( ( document.defaultView.getComputedStyle( marginDiv, null ) || { marginRight: 0 } ).marginRight, 10 ) || 0 ) === 0;
}
// Remove the body element we added
body.innerHTML = "";
documentElement.removeChild( body );
// Technique from Juriy Zaytsev
// http://thinkweb2.com/projects/prototype/detecting-event-support-without-browser-sniffing/
// We only care about the case where non-standard event systems
// are used, namely in IE. Short-circuiting here helps us to
// avoid an eval call (in setAttribute) which can cause CSP
// to go haywire. See: https://developer.mozilla.org/en/Security/CSP
if ( div.attachEvent ) {
for( i in {
submit: 1,
change: 1,
focusin: 1
} ) {
eventName = "on" + i;
isSupported = ( eventName in div );
if ( !isSupported ) {
div.setAttribute( eventName, "return;" );
isSupported = ( typeof div[ eventName ] === "function" );
}
support[ i + "Bubbles" ] = isSupported;
}
}
return support;
})();
// Keep track of boxModel
jQuery.boxModel = jQuery.support.boxModel;
})( jQuery );
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