diffux/diffux

define([
    "../core",
    "../var/rnotwhite",
    "../var/strundefined",
    "../data/var/data_priv",
    "../core/init"
], function( jQuery, rnotwhite, strundefined, data_priv ) {

var rclass = /[\t\r\n\f]/g;

jQuery.fn.extend({
    addClass: function( value ) {
        var classes, elem, cur, clazz, j, finalValue,
            proceed = typeof value === "string" && value,
            i = 0,
            len = this.length;

        if ( jQuery.isFunction( value ) ) {
            return this.each(function( j ) {
                jQuery( this ).addClass( value.call( this, j, this.className ) );
            });
        }

        if ( proceed ) {
            // The disjunction here is for better compressibility (see removeClass)
            classes = ( value || "" ).match( rnotwhite ) || [];

            for ( ; i < len; i++ ) {
                elem = this[ i ];
                cur = elem.nodeType === 1 && ( elem.className ?
                    ( " " + elem.className + " " ).replace( rclass, " " ) :
                    " "
                );

                if ( cur ) {
                    j = 0;
                    while ( (clazz = classes[j++]) ) {
                        if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
                            cur += clazz + " ";
                        }
                    }

                    // only assign if different to avoid unneeded rendering.
                    finalValue = jQuery.trim( cur );
                    if ( elem.className !== finalValue ) {
                        elem.className = finalValue;
                    }
                }
            }
        }

        return this;
    },

    removeClass: function( value ) {
        var classes, elem, cur, clazz, j, finalValue,
            proceed = arguments.length === 0 || typeof value === "string" && value,
            i = 0,
            len = this.length;

        if ( jQuery.isFunction( value ) ) {
            return this.each(function( j ) {
                jQuery( this ).removeClass( value.call( this, j, this.className ) );
            });
        }
        if ( proceed ) {
            classes = ( value || "" ).match( rnotwhite ) || [];

            for ( ; i < len; i++ ) {
                elem = this[ i ];
                // This expression is here for better compressibility (see addClass)
                cur = elem.nodeType === 1 && ( elem.className ?
                    ( " " + elem.className + " " ).replace( rclass, " " ) :
                    ""
                );

                if ( cur ) {
                    j = 0;
                    while ( (clazz = classes[j++]) ) {
                        // Remove *all* instances
                        while ( cur.indexOf( " " + clazz + " " ) >= 0 ) {
                            cur = cur.replace( " " + clazz + " ", " " );
                        }
                    }

                    // Only assign if different to avoid unneeded rendering.
                    finalValue = value ? jQuery.trim( cur ) : "";
                    if ( elem.className !== finalValue ) {
                        elem.className = finalValue;
                    }
                }
            }
        }

        return this;
    },

    toggleClass: function( value, stateVal ) {
        var type = typeof value;

        if ( typeof stateVal === "boolean" && type === "string" ) {
            return stateVal ? this.addClass( value ) : this.removeClass( value );
        }

        if ( jQuery.isFunction( value ) ) {
            return this.each(function( i ) {
                jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
            });
        }

        return this.each(function() {
            if ( type === "string" ) {
                // Toggle individual class names
                var className,
                    i = 0,
                    self = jQuery( this ),
                    classNames = value.match( rnotwhite ) || [];

                while ( (className = classNames[ i++ ]) ) {
                    // Check each className given, space separated list
                    if ( self.hasClass( className ) ) {
                        self.removeClass( className );
                    } else {
                        self.addClass( className );
                    }
                }

            // Toggle whole class name
            } else if ( type === strundefined || type === "boolean" ) {
                if ( this.className ) {
                    // store className if set
                    data_priv.set( this, "__className__", this.className );
                }

                // If the element has a class name or if we're passed `false`,
                // then remove the whole classname (if there was one, the above saved it).
                // Otherwise bring back whatever was previously saved (if anything),
                // falling back to the empty string if nothing was stored.
                this.className = this.className || value === false ? "" : data_priv.get( this, "__className__" ) || "";
            }
        });
    },

    hasClass: function( selector ) {
        var className = " " + selector + " ",
            i = 0,
            l = this.length;
        for ( ; i < l; i++ ) {
            if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
                return true;
            }
        }

        return false;
    }
});

});