| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| module.exports = { |
| /** |
| * |
| * @param node - DOM element which blinking |
| * @param delay - overall time of blinking |
| * @param callback |
| * @param interval - change frequence of blinking |
| */ |
| pulsate: function (node, delay, callback, interval) { |
| var self = this; |
| /** |
| * execute single blink |
| * @param interval - time of single blink |
| * @param callback |
| * @param opacity |
| * @param iteration - current iteration(default amount of iterations: 10) |
| * @param isReverse - flag, that mean opacity increase or decrease |
| */ |
| var blink = function (interval, callback, opacity, iteration, isReverse) { |
| var iterations = 10; |
| opacity = opacity || 1; |
| iteration = (iteration !== undefined) ? iteration : 10; |
| if (iteration > 0) { |
| iteration--; |
| setTimeout(function () { |
| isReverse = isReverse || (opacity <= 1 / (iterations / 2)); |
| opacity = (isReverse) ? opacity + (1 / (iterations / 2)) : opacity - (1 / (iterations / 2)); |
| node.css('opacity', opacity); |
| blink(interval, callback, opacity, iteration, isReverse); |
| }, interval / iterations); |
| } else { |
| node.css('opacity', 1); |
| callback(); |
| } |
| }; |
| interval = interval || 200; |
| if (delay > 0) { |
| delay -= interval; |
| setTimeout(function () { |
| blink(interval, function () { |
| self.pulsate(node, delay, callback, interval); |
| }); |
| }, interval); |
| } else { |
| callback(); |
| } |
| } |
| }; |