| |
| /* |
| * Copyright 2017-present Open Networking Foundation |
| |
| * 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. |
| */ |
| |
| |
| export interface IXosDebouncer { |
| debounce(func: any, wait: number, context: any, immediate?: boolean): any; |
| } |
| |
| export class XosDebouncer implements IXosDebouncer { |
| static $inject = ['$log']; |
| |
| constructor ( |
| private $log: ng.ILogService |
| ) { |
| |
| } |
| |
| // wait for 'wait' ms without actions to call the function |
| // if 'immediate' call it immediately then wait for 'wait' |
| // NOTE that we cannot use $timeout service to debounce functions as it trigger infiniteDigest Exception |
| public debounce(func: any, wait: number, context: any, immediate?: boolean) { |
| let timeout; |
| return function() { |
| const args = arguments; |
| const later = function() { |
| timeout = null; |
| if (!immediate) { |
| func.apply(context, args); |
| } |
| }; |
| const callNow = immediate && !timeout; |
| clearTimeout(timeout); |
| timeout = setTimeout(later, wait); |
| if (callNow) { |
| func.apply(context, args); |
| } |
| }; |
| } |
| } |