// some non-html elements return undefined for offsetWidth, so check for null/undefined
// svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
// MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
if ( val <= 0 || val == null ) {
// Fall back to computed then uncomputed css if necessary
val = curCSS( elem, name, styles );
if ( val < 0 || val == null ) {
val = elem.style[ name ];
}
// Computed unit is not pixels. Stop here and return.
if ( rnumnonpx.test(val) ) {
return val;
}
// we need the check for style in case a browser which returns unreliable values
// for getComputedStyle silently falls back to the reliable elem.style
valueIsBorderBox = isBorderBox && ( jQuery.support.boxSizingReliable || val === elem.style[ name ] );
// Normalize "", auto, and prepare for extra
val = parseFloat( val ) || 0;
}
// use the active box-sizing model to add/subtract irrelevant styles
return ( val +
augmentWidthOrHeight(
elem,
name,
extra || ( isBorderBox ? "border" : "content" ),
valueIsBorderBox,
styles
)
) + "px";
}
// Try to determine the default display value of an element
function css_defaultDisplay( nodeName ) {
var doc = document,
display = elemdisplay[ nodeName ];
if ( !display ) {
display = actualDisplay( nodeName, doc );
// If the simple way fails, read from inside an iframe
if ( display === "none" || !display ) {
// Use the already-created iframe if possible
iframe = ( iframe ||
jQuery("<iframe frameborder='0' width='0' height='0'/>")
.css( "cssText", "display:block !important" )
).appendTo( doc.documentElement );
// Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
doc = ( iframe[0].contentWindow || iframe[0].contentDocument ).document;
doc.write("<!doctype html><html><body>");
doc.close();
display = actualDisplay( nodeName, doc );
iframe.detach();
}
// Store the correct default display
elemdisplay[ nodeName ] = display;
}
return display;
}
// Called ONLY from within css_defaultDisplay
function actualDisplay( name, doc ) {
var elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),
display = jQuery.css( elem[0], "display" );
elem.remove();
return display;
}
jQuery.each([ "height", "width" ], function( i, name ) {
jQuery.cssHooks[ name ] = {
get: function( elem, computed, extra ) {
if ( computed ) {
// certain elements can have dimension info if we invisibly show them
// however, it must have a current display style that would benefit from this
return elem.offsetWidth === 0 && rdisplayswap.test( jQuery.css( elem, "display" ) ) ?
jQuery.swap( elem, cssShow, function() {
return getWidthOrHeight( elem, name, extra );
}) :
getWidthOrHeight( elem, name, extra );
}
},
set: function( elem, value, extra ) {
var styles = extra && getStyles( elem );
return setPositiveNumber( elem, value, extra ?
augmentWidthOrHeight(
elem,
name,
extra,
jQuery.support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
styles
) : 0
);
}
};
});
if ( !jQuery.support.opacity ) {
jQuery.cssHooks.opacity = {
get: function( elem, computed ) {
// IE uses filters for opacity
return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
computed ? "1" : "";
},
set: function( elem, value ) {
var style = elem.style,
currentStyle = elem.currentStyle,
opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
filter = currentStyle && currentStyle.filter || style.filter || "";
// IE has trouble with opacity if it does not have layout
// Force it by setting the zoom level
style.zoom = 1;
// if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
// if value === "", then remove inline opacity #12685
if ( ( value >= 1 || value === "" ) &&
jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
style.removeAttribute ) {
// Setting style.filter to null, "" & " " still leave "filter:" in the cssText
// if "filter:" is present at all, clearType is disabled, we want to avoid this
// style.removeAttribute is IE Only, but so apparently is this code path...
style.removeAttribute( "filter" );
// if there is no filter style applied in a css rule or unset inline opacity, we are done
if ( value === "" || currentStyle && !currentStyle.filter ) {
return;
}
}
// otherwise, set new filter values
style.filter = ralpha.test( filter ) ?
filter.replace( ralpha, opacity ) :
filter + " " + opacity;
}
};
}
// These hooks cannot be added until DOM ready because the support test
// for it is not run until after DOM ready
jQuery(function() {
if ( !jQuery.support.reliableMarginRight ) {
jQuery.cssHooks.marginRight = {
get: function( elem, computed ) {
if ( computed ) {
// WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
// Work around by temporarily setting element display to inline-block
return jQuery.swap( elem, { "display": "inline-block" },
curCSS, [ elem, "marginRight" ] );
}
}
};
}
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// getComputedStyle returns percent when specified for top/left/bottom/right
// rather than make the css module depend on the offset module, we just check for it here
if ( !jQuery.support.pixelPosition && jQuery.fn.position ) {
jQuery.each( [ "top", "left" ], function( i, prop ) {
jQuery.cssHooks[ prop ] = {
get: function( elem, computed ) {
if ( computed ) {
computed = curCSS( elem, prop );
// if curCSS returns percentage, fallback to offset
return rnumnonpx.test( computed ) ?
jQuery( elem ).position()[ prop ] + "px" :
computed;
}
}
};
});
}
});
if ( jQuery.expr && jQuery.expr.filters ) {
jQuery.expr.filters.hidden = function( elem ) {
// Support: Opera <= 12.12
// Opera reports offsetWidths and offsetHeights less than zero on some elements
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