https://art21.org/wp-content/themes/art21_dev_a11y/js/vg-modules/vg-poster.js?ver=7.0.5

1/**
2 * @license videogular v1.4.4 http://videogular.com
3 * Two Fucking Developers http://twofuckingdevelopers.com
4 * License: MIT
5 */
6/**
7 * @ngdoc directive
8 * @name com.2fdevs.videogular.plugins.poster.directive:vgPoster
9 * @restrict E
10 * @description
11 * Shows an image when player hasn't been played or has been completed a video.
12 * <pre>
13 * <videogular vg-theme="config.theme.url" vg-autoplay="config.autoPlay">
14 *    <vg-media vg-src="sources"></vg-media>
15 *
16 *    <vg-poster vg-url='config.plugins.poster.url'></vg-poster>
17 * </videogular>
18 * </pre>
19 *
20 * @param {string} vgUrl String with a scope name variable. URL to an image supported by the img tag.
21 * **This parameter is required.**
22 *
23 *
24 */
25"use strict";
26angular.module("com.2fdevs.videogular.plugins.poster", [])
27    .run(
28    ["$templateCache", function ($templateCache) {
29        $templateCache.put("vg-templates/vg-poster",
30            '<img ng-src="{{vgUrl}}" ng-class="API.currentState" role="presentation" alt="">');
31
32        // '<div class="fullBG" ng-style="{\'background-image\': \'url({{vgUrl}})\'}" role="presentation" ng-class="API.currentState"></div>');
33    }]
34)
35    .directive("vgPoster",
36    [function () {
37        return {
38            restrict: "E",
39            require: "^videogular",
40            scope: {
41                vgUrl: "=?"
42            },
43            templateUrl: function (elem, attrs) {
44                return attrs.vgTemplate || 'vg-templates/vg-poster';
45            },
46            link: function (scope, elem, attr, API) {
47                scope.API = API;
48
49                if (API.isConfig) {
50                    scope.$watch("API.config",
51                        function () {
52                            if (scope.API.config) {
53                            	// console.log('fire watcher');
54                                scope.vgUrl = scope.API.config.plugins.poster.url;
55                            }
56                        }
57                    );
58                }
59            }
60        }
61    }]
62);