    /**
     * @class Ext.ux.grid.filter.NumericFilter
     * @extends Ext.ux.grid.filter.Filter
     * Filters using an Ext.ux.grid.menu.RangeMenu.
     * <p><b><u>Example Usage:</u></b></p>
     * <pre><code>
    var filters = Ext.create('Ext.ux.grid.GridFilters', {
        ...
        filters: [{
            type: 'numeric',
            dataIndex: 'price'
        }]
    });
     * </code></pre>
     * <p>Any of the configuration options for {@link Ext.ux.grid.menu.RangeMenu} can also be specified as
     * configurations to NumericFilter, and will be copied over to the internal menu instance automatically.</p>
     */
    Ext.define('Ext.ux.grid.filter.NumericFilter', {
        extend: 'Ext.ux.grid.filter.Filter',
        alias: 'gridfilter.numeric',
        uses: ['Ext.form.field.Number'],

        /**
         * @private @override
         * Creates the Menu for this filter.
         * @param {Object} config Filter configuration
         * @return {Ext.menu.Menu}
         */
        createMenu: function(config) {
            var me = this,
                menu;
            menu = Ext.create('Ext.ux.grid.menu.RangeMenu', config);
            menu.on('update', me.fireUpdate, me);
            return menu;
        },

        /**
         * @private
         * Template method that is to get and return the value of the filter.
         * @return {String} The value of this filter
         */
        getValue : function () {
            return this.menu.getValue();
        },

        /**
         * @private
         * Template method that is to set the value of the filter.
         * @param {Object} value The value to set the filter
         */
        setValue : function (value) {
            this.menu.setValue(value);
        },

        /**
         * @private
         * Template method that is to return <tt>true</tt> if the filter
         * has enough configuration information to be activated.
         * @return {Boolean}
         */
        isActivatable : function () {
            var values = this.getValue(),
                key;
            for (key in values) {
                if (values[key] !== undefined) {
                    return true;
                }
            }
            return false;
        },

        /**
         * @private
         * Template method that is to get and return serialized filter data for
         * transmission to the server.
         * @return {Object/Array} An object or collection of objects containing
         * key value pairs representing the current configuration of the filter.
         */
        getSerialArgs : function () {
            var key,
                args = [],
                values = this.menu.getValue();
            for (key in values) {
                args.push({
                    type: 'numeric',
                    comparison: key,
                    value: values[key]
                });
            }
            return args;
        },

        /**
         * Template method that is to validate the provided Ext.data.Record
         * against the filters configuration.
         * @param {Ext.data.Record} record The record to validate
         * @return {Boolean} true if the record is valid within the bounds
         * of the filter, false otherwise.
         */
        validateRecord : function (record) {
            var val = record.get(this.dataIndex),
                values = this.getValue(),
                isNumber = Ext.isNumber;
            if (isNumber(values.eq) && val != values.eq) {
                return false;
            }
            if (isNumber(values.lt) && val >= values.lt) {
                return false;
            }
            if (isNumber(values.gt) && val <= values.gt) {
                return false;
            }
            return true;
        }
    });