1 | 'use strict';
|
2 |
|
3 | Object.defineProperty(exports, '__esModule', { value: true });
|
4 |
|
5 | var _tslib = require('./_virtual/_tslib.js');
|
6 |
|
7 | var defaultOptions = {
|
8 | deferEvents: false
|
9 | };
|
10 |
|
11 | var Scheduler =
|
12 |
|
13 |
|
14 |
|
15 | function () {
|
16 | function Scheduler(options) {
|
17 | this.processingEvent = false;
|
18 | this.queue = [];
|
19 | this.initialized = false;
|
20 | this.options = _tslib.__assign(_tslib.__assign({}, defaultOptions), options);
|
21 | }
|
22 |
|
23 | Scheduler.prototype.initialize = function (callback) {
|
24 | this.initialized = true;
|
25 |
|
26 | if (callback) {
|
27 | if (!this.options.deferEvents) {
|
28 | this.schedule(callback);
|
29 | return;
|
30 | }
|
31 |
|
32 | this.process(callback);
|
33 | }
|
34 |
|
35 | this.flushEvents();
|
36 | };
|
37 |
|
38 | Scheduler.prototype.schedule = function (task) {
|
39 | if (!this.initialized || this.processingEvent) {
|
40 | this.queue.push(task);
|
41 | return;
|
42 | }
|
43 |
|
44 | if (this.queue.length !== 0) {
|
45 | throw new Error('Event queue should be empty when it is not processing events');
|
46 | }
|
47 |
|
48 | this.process(task);
|
49 | this.flushEvents();
|
50 | };
|
51 |
|
52 | Scheduler.prototype.clear = function () {
|
53 | this.queue = [];
|
54 | };
|
55 |
|
56 | Scheduler.prototype.flushEvents = function () {
|
57 | var nextCallback = this.queue.shift();
|
58 |
|
59 | while (nextCallback) {
|
60 | this.process(nextCallback);
|
61 | nextCallback = this.queue.shift();
|
62 | }
|
63 | };
|
64 |
|
65 | Scheduler.prototype.process = function (callback) {
|
66 | this.processingEvent = true;
|
67 |
|
68 | try {
|
69 | callback();
|
70 | } catch (e) {
|
71 |
|
72 |
|
73 | this.clear();
|
74 | throw e;
|
75 | } finally {
|
76 | this.processingEvent = false;
|
77 | }
|
78 | };
|
79 |
|
80 | return Scheduler;
|
81 | }();
|
82 |
|
83 | exports.Scheduler = Scheduler;
|