40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
/**
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* Copyright (c) 2018-present, Ephox, Inc.
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*
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* This source code is licensed under the Apache 2 license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*/
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import { uuid } from './Utils';
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var injectScriptTag = function (scriptId, doc, url, callback) {
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var scriptTag = doc.createElement('script');
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scriptTag.type = 'application/javascript';
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scriptTag.id = scriptId;
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scriptTag.addEventListener('load', callback);
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scriptTag.src = url;
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if (doc.head) {
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doc.head.appendChild(scriptTag);
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}
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};
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export var create = function () {
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return {
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listeners: [],
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scriptId: uuid('tiny-script'),
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scriptLoaded: false
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};
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};
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export var load = function (state, doc, url, callback) {
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if (state.scriptLoaded) {
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callback();
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}
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else {
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state.listeners.push(callback);
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if (!doc.getElementById(state.scriptId)) {
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injectScriptTag(state.scriptId, doc, url, function () {
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state.listeners.forEach(function (fn) { return fn(); });
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state.scriptLoaded = true;
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});
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}
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}
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};
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