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- /**
- * 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 {DOMElement} - DOM element which blinking
- * @param delay {number} - overall time of blinking
- * @param callback {function}
- * @param interval {number} - change frequence of blinking
- */
- pulsate: function (node, delay, callback, interval) {
- var self = this;
- /**
- * execute single blink
- * @param interval {number} - time of single blink
- * @param callback {function}
- * @param opacity {string|number}
- * @param iteration {number} - current iteration(default amount of iterations: 10)
- * @param isReverse {boolean} - 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();
- }
- }
- };
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