| // Copyright 2007 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 Callback object that counts matches. |
| * |
| * @author robbyw@google.com (Robby Walker) |
| */ |
| |
| goog.provide('goog.dom.pattern.callback.Counter'); |
| |
| |
| |
| /** |
| * Callback class for counting matches. |
| * @constructor |
| * @final |
| */ |
| goog.dom.pattern.callback.Counter = function() { |
| }; |
| |
| |
| /** |
| * The count of objects matched so far. |
| * |
| * @type {number} |
| */ |
| goog.dom.pattern.callback.Counter.prototype.count = 0; |
| |
| |
| /** |
| * The callback function. Suitable as a callback for |
| * {@link goog.dom.pattern.Matcher}. |
| * @type {Function} |
| * @private |
| */ |
| goog.dom.pattern.callback.Counter.prototype.callback_ = null; |
| |
| |
| /** |
| * Get a bound callback function that is suitable as a callback for |
| * {@link goog.dom.pattern.Matcher}. |
| * |
| * @return {!Function} A callback function. |
| */ |
| goog.dom.pattern.callback.Counter.prototype.getCallback = function() { |
| if (!this.callback_) { |
| this.callback_ = goog.bind(function() { |
| this.count++; |
| return false; |
| }, this); |
| } |
| return this.callback_; |
| }; |
| |
| |
| /** |
| * Reset the counter. |
| */ |
| goog.dom.pattern.callback.Counter.prototype.reset = function() { |
| this.count = 0; |
| }; |