(function( jQuery ) {
var ralpha = /alpha\([^)]*\)/i,
ropacity = /opacity=([^)]*)/,
rdashAlpha = /-([a-z])/ig,
rupper = /([A-Z])/g,
rnumpx = /^-?\d+(?:px)?$/i,
rnum = /^-?\d/,
cssShow = { position: "absolute", visibility: "hidden", display: "block" },
cssWidth = [ "Left", "Right" ],
cssHeight = [ "Top", "Bottom" ],
curCSS,
getComputedStyle,
currentStyle,
fcamelCase = function( all, letter ) {
return letter.toUpperCase();
};
jQuery.fn.css = function( name, value ) {
// Setting 'undefined' is a no-op
if ( arguments.length === 2 && value === undefined ) {
return this;
}
return jQuery.access( this, name, value, true, function( elem, name, value ) {
return value !== undefined ?
jQuery.style( elem, name, value ) :
jQuery.css( elem, name );
});
};
jQuery.extend({
// Add in style property hooks for overriding the default
// behavior of getting and setting a style property
cssHooks: {
opacity: {
get: function( elem, computed ) {
if ( computed ) {
// We should always get a number back from opacity
var ret = curCSS( elem, "opacity", "opacity" );
return ret === "" ? "1" : ret;
} else {
return elem.style.opacity;
}
}
}
},
// Exclude the following css properties to add px
cssNumber: {
"zIndex": true,
"fontWeight": true,
"opacity": true,
"zoom": true,
"lineHeight": true
},
// Add in properties whose names you wish to fix before
// setting or getting the value
cssProps: {
// normalize float css property
"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
},
// Get and set the style property on a DOM Node
style: function( elem, name, value, extra ) {
// Don't set styles on text and comment nodes
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
return;
}
// Make sure that we're working with the right name
var ret, origName = jQuery.camelCase( name ),
style = elem.style, hooks = jQuery.cssHooks[ origName ];
name = jQuery.cssProps[ origName ] || origName;
// Check if we're setting a value
if ( value !== undefined ) {
// Make sure that NaN and null values aren't set. See: #7116
if ( typeof value === "number" && isNaN( value ) || value == null ) {
return;
}
// If a number was passed in, add 'px' to the (except for certain CSS properties)
if ( typeof value === "number" && !jQuery.cssNumber[ origName ] ) {
value += "px";
}
// If a hook was provided, use that value, otherwise just set the specified value
if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value )) !== undefined ) {
// Wrapped to prevent IE from throwing errors when 'invalid' values are provided
// Fixes bug #5509
try {
style[ name ] = value;
} catch(e) {}
}
} else {
// If a hook was provided get the non-computed value from there
if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
return ret;
}
// Otherwise just get the value from the style object
return style[ name ];
}
},
css: function( elem, name, extra ) {
// Make sure that we're working with the right name
var ret, origName = jQuery.camelCase( name ),
hooks = jQuery.cssHooks[ origName ];
name = jQuery.cssProps[ origName ] || origName;
// If a hook was provided get the computed value from there
if ( hooks && "get" in hooks && (ret = hooks.get( elem, true, extra )) !== undefined ) {
return ret;
// Otherwise, if a way to get the computed value exists, use that
} else if ( curCSS ) {
return curCSS( elem, name, origName );
}
},
// 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 ( name in options ) {
elem.style[ name ] = old[ name ];
}
},
camelCase: function( string ) {
return string.replace( rdashAlpha, fcamelCase );
}
});
// DEPRECATED, Use jQuery.css() instead
jQuery.curCSS = jQuery.css;
jQuery.each(["height", "width"], function( i, name ) {
jQuery.cssHooks[ name ] = {
get: function( elem, computed, extra ) {
var val;
if ( computed ) {
if ( elem.offsetWidth !== 0 ) {
val = getWH( elem, name, extra );
} else {
jQuery.swap( elem, cssShow, function() {
val = getWH( elem, name, extra );
});
}
if ( val <= 0 ) {
val = curCSS( elem, name, name );
if ( val === "0px" && currentStyle ) {
val = currentStyle( elem, name, name );
}
if ( val != null ) {
// Should return "auto" instead of 0, use 0 for
// temporary backwards-compat
return val === "" || val === "auto" ? "0px" : val;
}
}
if ( val < 0 || val == null ) {
val = elem.style[ name ];
// Should return "auto" instead of 0, use 0 for
// temporary backwards-compat
return val === "" || val === "auto" ? "0px" : val;
}
return typeof val === "string" ? val : val + "px";
}
},
set: function( elem, value ) {
if ( rnumpx.test( value ) ) {
// ignore negative width and height values #1599
value = parseFloat(value);
if ( value >= 0 ) {
return value + "px";
}
} else {
return value;
}
}
};
});
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) || "") ?
(parseFloat(RegExp.$1) / 100) + "" :
computed ? "1" : "";
},
set: function( elem, value ) {
var style = elem.style;
// 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
var opacity = jQuery.isNaN(value) ?
"" :
"alpha(opacity=" + value * 100 + ")",
filter = style.filter || "";
style.filter = ralpha.test(filter) ?
filter.replace(ralpha, opacity) :
style.filter + ' ' + opacity;
}
};
}
if ( document.defaultView && document.defaultView.getComputedStyle ) {
getComputedStyle = function( elem, newName, name ) {
var ret, defaultView, computedStyle;
name = name.replace( rupper, "-$1" ).toLowerCase();
if ( !(defaultView = elem.ownerDocument.defaultView) ) {
return undefined;
}
if ( (computedStyle = defaultView.getComputedStyle( elem, null )) ) {
ret = computedStyle.getPropertyValue( name );
if ( ret === "" && !jQuery.contains( elem.ownerDocument.documentElement, elem ) ) {
ret = jQuery.style( elem, name );
}
}
return ret;
};
}
if ( document.documentElement.currentStyle ) {
currentStyle = function( elem, name ) {
var left,
ret = elem.currentStyle && elem.currentStyle[ name ],
rsLeft = elem.runtimeStyle && elem.runtimeStyle[ name ],
style = elem.style;
// 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
left = style.left;
// Put in the new values to get a computed value out
if ( rsLeft ) {
elem.runtimeStyle.left = elem.currentStyle.left;
}
style.left = name === "fontSize" ? "1em" : (ret || 0);
ret = style.pixelLeft + "px";
// Revert the changed values
style.left = left;
if ( rsLeft ) {
elem.runtimeStyle.left = rsLeft;
}
}
return ret === "" ? "auto" : ret;
};
}
curCSS = getComputedStyle || currentStyle;
function getWH( elem, name, extra ) {
var which = name === "width" ? cssWidth : cssHeight,
val = name === "width" ? elem.offsetWidth : elem.offsetHeight;
if ( extra === "border" ) {
return val;
}
jQuery.each( which, function() {
if ( !extra ) {
val -= parseFloat(jQuery.css( elem, "padding" + this )) || 0;
}
if ( extra === "margin" ) {
val += parseFloat(jQuery.css( elem, "margin" + this )) || 0;
} else {
val -= parseFloat(jQuery.css( elem, "border" + this + "Width" )) || 0;
}
});
return val;
}
if ( jQuery.expr && jQuery.expr.filters ) {
jQuery.expr.filters.hidden = function( elem ) {
var width = elem.offsetWidth,
height = elem.offsetHeight;
return (width === 0 && height === 0) || (!jQuery.support.reliableHiddenOffsets && (elem.style.display || jQuery.css( elem, "display" )) === "none");
};
jQuery.expr.filters.visible = function( elem ) {
return !jQuery.expr.filters.hidden( elem );
};
}
})( jQuery );
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