diffux/diffux

define([
    "../core",
    "./var/rnumnonpx",
    "./var/rmargin",
    "./var/getStyles",
    "../selector" // contains
], function( jQuery, rnumnonpx, rmargin, getStyles ) {

function curCSS( elem, name, computed ) {
    var width, minWidth, maxWidth, ret,
        style = elem.style;

    computed = computed || getStyles( elem );

    // Support: IE9
    // getPropertyValue is only needed for .css('filter') (#12537)
    if ( computed ) {
        ret = computed.getPropertyValue( name ) || computed[ name ];
    }

    if ( computed ) {

        if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
            ret = jQuery.style( elem, name );
        }

        // Support: iOS < 6
        // A tribute to the "awesome hack by Dean Edwards"
        // iOS < 6 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
        // this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
        if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {

            // Remember the original values
            width = style.width;
            minWidth = style.minWidth;
            maxWidth = style.maxWidth;

            // Put in the new values to get a computed value out
            style.minWidth = style.maxWidth = style.width = ret;
            ret = computed.width;

            // Revert the changed values
            style.width = width;
            style.minWidth = minWidth;
            style.maxWidth = maxWidth;
        }
    }

    return ret !== undefined ?
        // Support: IE
        // IE returns zIndex value as an integer.
        ret + "" :
        ret;
}

return curCSS;
});