/**
 * A class responsible for formatting and unformatting numbers.
 */

define(
		[ 'dojo/_base/declare', 'dojo/number' ],
		function(declare, number) {
			return declare(
					null,
					{
						constructor : function(info) {
							this.info = info;
						},

						format : function(value) {
							if (value == undefined
									|| value == null
									|| ((typeof value != "string") && (typeof value != "number"))
									|| (typeof value == "string")
									&& value.trim() === '') {
								return '';
							}

							return number
									.format(value, this.info.configuration);
						},

						unformat : function(value) {
							if (value == undefined
									|| value == null
									|| ((typeof value != "string") && (typeof value != "number"))
									|| (typeof value == "string")
									&& value.trim() === '') {
								return null;
							}

							if (typeof value == "number") {
								return value;
							}

							return number.parse(value, this.info.configuration);
						}
					});
		});