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// exclude the following css properties to add px
var rexclude = /z-?index|font-?weight|opacity|zoom|line-?height/i,
ralpha = /alpha\([^)]*\)/,
ropacity = /opacity=([^)]*)/,
rfloat = /float/i,
rdashAlpha = /-([a-z])/ig,
rupper = /([A-Z])/g,
rnumpx = /^\d+(?:px)?$/i,
rnum = /^\d/,
// cache check for defaultView.getComputedStyle
getComputedStyle = document.defaultView && document.defaultView.getComputedStyle,
// normalize float css property
styleFloat = jQuery.support.cssFloat ? "cssFloat" : "styleFloat",
fcamelCase = function(all, letter){
return letter.toUpperCase();
};
jQuery.fn.css = function( name, value ) {
return access( this, name, value, true, function( elem, name, value ) {
if (value === undefined) {
return jQuery.css( elem, name );
}
if ( typeof value === "number" && !rexclude.test(name) ) {
value += "px";
}
jQuery.style( elem, name, value );
});
};
jQuery.extend({
style: function( elem, name, value ) {
// don't set styles on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
return undefined;
}
// ignore negative width and height values #1599
if ( (name === "width" || name === "height") && parseFloat(value) < 0 ) {
value = undefined;
}
var style = elem.style || elem, set = value !== undefined;
// IE uses filters for opacity
if ( !jQuery.support.opacity && name === "opacity" ) {
if ( set ) {
// IE has trouble with opacity if it does not have layout
// Force it by setting the zoom level
style.zoom = 1;
// Set the alpha filter to set the opacity
style.filter = (style.filter || "").replace( ralpha, "" ) +
(parseInt( value ) + '' === "NaN" ? "" : "alpha(opacity=" + value * 100 + ")");
}
return style.filter && style.filter.indexOf("opacity=") >= 0 ?
(parseFloat( ropacity.exec(style.filter)[1] ) / 100) + '':
"";
}
// Make sure we're using the right name for getting the float value
if ( rfloat.test( name ) ) {
name = styleFloat;
}
name = name.replace(rdashAlpha, fcamelCase);
if ( set ) {
style[ name ] = value;
}
return style[ name ];
},
css: function( elem, name, force, extra ) {
if ( name === "width" || name === "height" ) {
var val, props = { position: "absolute", visibility: "hidden", display:"block" }, which = name === "width" ? [ "Left", "Right" ] : [ "Top", "Bottom" ];
function getWH() {
val = name === "width" ? elem.offsetWidth : elem.offsetHeight;
if ( extra === "border" ) { return; }
jQuery.each( which, function() {
if ( !extra ) {
val -= parseFloat(jQuery.curCSS( elem, "padding" + this, true)) || 0;
}
if ( extra === "margin" ) {
val += parseFloat(jQuery.curCSS( elem, "margin" + this, true)) || 0;
} else {
val -= parseFloat(jQuery.curCSS( elem, "border" + this + "Width", true)) || 0;
}
});
}
if ( elem.offsetWidth !== 0 ) {
getWH();
} else {
jQuery.swap( elem, props, getWH );
}
return Math.max(0, Math.round(val));
}
return jQuery.curCSS( elem, name, force );
},
curCSS: function( elem, name, force ) {
var ret, style = elem.style, filter;
// IE uses filters for opacity
if ( !jQuery.support.opacity && name === "opacity" && elem.currentStyle ) {
ret = ropacity.test(elem.currentStyle.filter || "") ?
(parseFloat(RegExp.$1) / 100) + "" :
"";
return ret === "" ?
"1" :
ret;
}
// Make sure we're using the right name for getting the float value
if ( rfloat.test( name ) ) {
name = styleFloat;
}
if ( !force && style && style[ name ] ) {
ret = style[ name ];
} else if ( getComputedStyle ) {
// Only "float" is needed here
if ( rfloat.test( name ) ) {
name = "float";
}
name = name.replace( rupper, "-$1" ).toLowerCase();
var computedStyle = elem.ownerDocument.defaultView.getComputedStyle( elem, null );
if ( computedStyle ) {
ret = computedStyle.getPropertyValue( name );
}
// We should always get a number back from opacity
if ( name === "opacity" && ret === "" ) {
ret = "1";
}
} else if ( elem.currentStyle ) {
var camelCase = name.replace(rdashAlpha, fcamelCase);
ret = elem.currentStyle[ name ] || elem.currentStyle[ camelCase ];
// From the awesome hack by Dean Edwards
// http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291
// If we're not dealing with a regular pixel number
// but a number that has a weird ending, we need to convert it to pixels
if ( !rnumpx.test( ret ) && rnum.test( ret ) ) {
// Remember the original values
var left = style.left, rsLeft = elem.runtimeStyle.left;
// Put in the new values to get a computed value out
elem.runtimeStyle.left = elem.currentStyle.left;
style.left = camelCase === "fontSize" ? "1em" : (ret || 0);
ret = style.pixelLeft + "px";
// Revert the changed values
style.left = left;
elem.runtimeStyle.left = rsLeft;
}
}
return ret;
},
// A method for quickly swapping in/out CSS properties to get correct calculations
swap: function( elem, options, callback ) {
var old = {};
// Remember the old values, and insert the new ones
for ( var name in options ) {
old[ name ] = elem.style[ name ];
elem.style[ name ] = options[ name ];
}
callback.call( elem );
// Revert the old values
for ( var name in options ) {
elem.style[ name ] = old[ name ];
}
}
});
if ( jQuery.expr && jQuery.expr.filters ) {
jQuery.expr.filters.hidden = function(elem){
var width = elem.offsetWidth, height = elem.offsetHeight,
force = /^tr$/i.test( elem.nodeName ); // ticket #4512
return ( width === 0 && height === 0 && !force ) ?
true :
( width !== 0 && height !== 0 && !force ) ?
false :
!!( jQuery.curCSS(elem, "display") === "none" );
};
jQuery.expr.filters.visible = function(elem){
return !jQuery.expr.filters.hidden(elem);
};
}
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