closure-builder
Version:
Simple Closure, Soy and JavaScript Build system
69 lines (55 loc) • 1.9 kB
JavaScript
// Copyright 2008 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview Generator for unique element IDs.
*
*/
goog.provide('goog.ui.IdGenerator');
/**
* Creates a new id generator.
* @constructor
* @final
*/
goog.ui.IdGenerator = function() {};
goog.addSingletonGetter(goog.ui.IdGenerator);
/**
* Next unique ID to use
* @type {number}
* @private
*/
goog.ui.IdGenerator.prototype.nextId_ = 0;
/**
* Random ID prefix to help avoid collisions with other closure JavaScript on
* the same page that may initialize its own IdGenerator singleton.
* @type {string}
* @private
*/
goog.ui.IdGenerator.prototype.idPrefix_ = '';
/**
* Sets the ID prefix for this singleton. This is a temporary workaround to be
* backwards compatible with code relying on the undocumented, but consistent,
* behavior. In the future this will be removed and the prefix will be set to
* a randomly generated string.
* @param {string} idPrefix
*/
goog.ui.IdGenerator.prototype.setIdPrefix = function(idPrefix) {
this.idPrefix_ = idPrefix;
};
/**
* Gets the next unique ID.
* @return {string} The next unique identifier.
*/
goog.ui.IdGenerator.prototype.getNextUniqueId = function() {
return this.idPrefix_ + ':' + (this.nextId_++).toString(36);
};