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annotate src/plugins/autoyoutube.js @ 24:80a86fb8f2b7

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minor
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 09 Aug 2022 22:49:59 -0600
parents b7725dab7482
children ea32a44b5a6e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /**
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2 * SCEditor Auto Youtube Plugin
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3 * http://www.sceditor.com/
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4 *
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5 * Copyright (C) 2016, Sam Clarke (samclarke.com)
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6 *
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7 * SCEditor is licensed under the MIT license:
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8 * http://www.opensource.org/licenses/mit-license.php
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9 *
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10 * @author Sam Clarke
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11 */
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12 (function (document, sceditor) {
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13 'use strict';
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14
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15 var dom = sceditor.dom;
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16
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17 /*
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18 (^|\s) Start of line or space
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19 (?:https?:\/\/)? Optional scheme like http://
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20 (?:www\.)? Optional www. prefix
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21 (?:
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22 youtu\.be\/ Ends with .be/ so whatever comes next is the ID
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23 |
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24 youtube\.com\/watch\?v= Matches the .com version
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25 )
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26 ([^"&?\/ ]{11}) The actual YT ID
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27 (?:\&[\&_\?0-9a-z\#]+)? Any extra URL params
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28 (\s|$) End of line or space
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29 */
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30 var ytUrlRegex = /(^|\s)(?:https?:\/\/)?(?:www\.)?(?:youtu\.be\/|youtube\.com\/watch\?v=)([^"&?\/ ]{11})(?:\&[\&_\?0-9a-z\#]+)?(\s|$)/i;
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31
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32 function youtubeEmbedCode(id) {
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33 return '<iframe width="560" height="315" frameborder="0" ' +
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34 'src="https://www.youtube-nocookie.com/embed/' + id + '" ' +
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35 'data-youtube-id="' + id + '" allowfullscreen></iframe>';
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36 }
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37
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38 function convertYoutubeLinks(parent, isRoot) {
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39 var node = parent.firstChild;
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40 var wholeContent = (parent.textContent || '');
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41
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42 // Don't care about whitespace if is the root node
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43 if (isRoot) {
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44 wholeContent = wholeContent.trim();
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45 }
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46
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47 var match = wholeContent.match(ytUrlRegex);
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48 // Whole content match so only return URL embed
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49 if (wholeContent === wholeContent.trim() && match &&
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50 match[0].length === wholeContent.length) {
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51 dom.removeAttr(parent, 'style');
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52 dom.removeAttr(parent, 'class');
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53 parent.innerHTML = youtubeEmbedCode(match[2]);
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54 return;
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55 }
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56
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57 while (node) {
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58 // 3 is TextNodes
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59 if (node.nodeType === 3) {
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60 var text = node.nodeValue;
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61 var nodeParent = node.parentNode;
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62
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63 if ((match = text.match(ytUrlRegex))) {
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64 nodeParent.insertBefore(document.createTextNode(
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65 text.substr(0, match.index) + match[1]
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66 ), node);
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67
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68 nodeParent.insertBefore(
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69 dom.parseHTML(youtubeEmbedCode(match[2])), node
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70 );
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71
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72 node.nodeValue = match[3] +
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73 text.substr(match.index + match[0].length);
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74 }
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75 } else {
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76 // TODO: Make this tag configurable.
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77 if (!dom.is(node, 'code')) {
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78 convertYoutubeLinks(node);
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79 }
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80 }
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81
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82 node = node.nextSibling;
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83 }
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84 };
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85
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86 sceditor.plugins.autoyoutube = function () {
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87 this.signalPasteRaw = function (data) {
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88 // TODO: Make this tag configurable.
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89 // Skip code tags
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90 if (dom.closest(this.currentNode(), 'code')) {
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91 return;
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92 }
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93
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94 if (data.html || data.text) {
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95 var node = document.createElement('div');
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96
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97 node.innerHTML = data.html ||
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98 sceditor.escapeEntities(data.text);
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99
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100 convertYoutubeLinks(node, true);
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101
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102 data.html = node.innerHTML;
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103 }
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104 };
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105 };
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106 })(document, sceditor);