diffux/diffux

define([
    "../core",
    "../var/rnotwhite",
    "../var/strundefined",
    "../core/access",
    "./support",
    "../selector"
], function( jQuery, rnotwhite, strundefined, access, support ) {

var nodeHook, boolHook,
    attrHandle = jQuery.expr.attrHandle;

jQuery.fn.extend({
    attr: function( name, value ) {
        return access( this, jQuery.attr, name, value, arguments.length > 1 );
    },

    removeAttr: function( name ) {
        return this.each(function() {
            jQuery.removeAttr( this, name );
        });
    }
});

jQuery.extend({
    attr: function( elem, name, value ) {
        var hooks, ret,
            nType = elem.nodeType;

        // don't get/set attributes on text, comment and attribute nodes
        if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
            return;
        }

        // Fallback to prop when attributes are not supported
        if ( typeof elem.getAttribute === strundefined ) {
            return jQuery.prop( elem, name, value );
        }

        // All attributes are lowercase
        // Grab necessary hook if one is defined
        if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
            name = name.toLowerCase();
            hooks = jQuery.attrHooks[ name ] ||
                ( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
        }

        if ( value !== undefined ) {

            if ( value === null ) {
                jQuery.removeAttr( elem, name );

            } else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
                return ret;

            } else {
                elem.setAttribute( name, value + "" );
                return value;
            }

        } else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
            return ret;

        } else {
            ret = jQuery.find.attr( elem, name );

            // Non-existent attributes return null, we normalize to undefined
            return ret == null ?
                undefined :
                ret;
        }
    },

    removeAttr: function( elem, value ) {
        var name, propName,
            i = 0,
            attrNames = value && value.match( rnotwhite );

        if ( attrNames && elem.nodeType === 1 ) {
            while ( (name = attrNames[i++]) ) {
                propName = jQuery.propFix[ name ] || name;

                // Boolean attributes get special treatment (#10870)
                if ( jQuery.expr.match.bool.test( name ) ) {
                    // Set corresponding property to false
                    elem[ propName ] = false;
                }

                elem.removeAttribute( name );
            }
        }
    },

    attrHooks: {
        type: {
            set: function( elem, value ) {
                if ( !support.radioValue && value === "radio" &&
                    jQuery.nodeName( elem, "input" ) ) {
                    var val = elem.value;
                    elem.setAttribute( "type", value );
                    if ( val ) {
                        elem.value = val;
                    }
                    return value;
                }
            }
        }
    }
});

// Hooks for boolean attributes
boolHook = {
    set: function( elem, value, name ) {
        if ( value === false ) {
            // Remove boolean attributes when set to false
            jQuery.removeAttr( elem, name );
        } else {
            elem.setAttribute( name, name );
        }
        return name;
    }
};
jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
    var getter = attrHandle[ name ] || jQuery.find.attr;

    attrHandle[ name ] = function( elem, name, isXML ) {
        var ret, handle;
        if ( !isXML ) {
            // Avoid an infinite loop by temporarily removing this function from the getter
            handle = attrHandle[ name ];
            attrHandle[ name ] = ret;
            ret = getter( elem, name, isXML ) != null ?
                name.toLowerCase() :
                null;
            attrHandle[ name ] = handle;
        }
        return ret;
    };
});

});