devextreme/dist/transpiled/core/guid.js

HTML5 JavaScript Component Suite for Responsive Web Development

"use strict";

var Class = require("./class");

/**
* @name Guid
* @publicName Guid
* @type object
* @namespace DevExpress.data
* @module core/guid
* @export default
*/
var Guid = Class.inherit({

    /**
    * @name Guidmethods.ctor
    * @publicName ctor()
    */
    /**
    * @name Guidmethods.ctor
    * @publicName ctor(value)
    * @param1 value:string
    */
    ctor: function ctor(value) {
        if (value) {
            value = String(value);
        }
        this._value = this._normalize(value || this._generate());
    },

    _normalize: function _normalize(value) {
        value = value.replace(/[^a-f0-9]/ig, "").toLowerCase();
        while (value.length < 32) {
            value += "0";
        }
        return [value.substr(0, 8), value.substr(8, 4), value.substr(12, 4), value.substr(16, 4), value.substr(20, 12)].join("-");
    },

    _generate: function _generate() {
        var value = "";
        for (var i = 0; i < 32; i++) {
            value += Math.round(Math.random() * 15).toString(16);
        }
        return value;
    },

    /**
    * @name Guidmethods.toString
    * @publicName toString()
    * @return string
    */
    toString: function toString() {
        return this._value;
    },

    /**
    * @name Guidmethods.valueOf
    * @publicName valueOf()
    * @return string
    */
    valueOf: function valueOf() {
        return this._value;
    },

    toJSON: function toJSON() {
        return this._value;
    }

});

module.exports = Guid;