|
1 | | -window.MathJax = { |
2 | | - tex: { |
3 | | - inlineMath: [["\\(", "\\)"]], |
4 | | - displayMath: [["\\[", "\\]"]], |
5 | | - processEscapes: true, |
6 | | - processEnvironments: true |
7 | | - }, |
8 | | - options: { |
9 | | - ignoreHtmlClass: ".*|", |
10 | | - processHtmlClass: "arithmatex" |
11 | | - }, |
12 | | - chtml: { |
13 | | - fontURL: 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/output/chtml/fonts/woff-v2' |
| 1 | +(function () { |
| 2 | + const MATHJAX_SRC = 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js'; |
| 3 | + const PANGU_SRC = (typeof document !== 'undefined') ? new URL('javascripts/pangu.min.js', document.baseURI).href : '/javascripts/pangu.min.js'; |
| 4 | + const pendingScripts = new Map(); |
| 5 | + let mathjaxReady; |
| 6 | + |
| 7 | + window.MathJax = { |
| 8 | + tex: { |
| 9 | + inlineMath: [["\(", "\)"]], |
| 10 | + displayMath: [["\[", "\]"]], |
| 11 | + processEscapes: true, |
| 12 | + processEnvironments: true |
| 13 | + }, |
| 14 | + options: { |
| 15 | + ignoreHtmlClass: ".*|", |
| 16 | + processHtmlClass: "arithmatex" |
| 17 | + }, |
| 18 | + chtml: { |
| 19 | + fontURL: 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/output/chtml/fonts/woff-v2' |
| 20 | + } |
| 21 | + }; |
| 22 | + |
| 23 | + function loadScript(id, src, attrs) { |
| 24 | + if (pendingScripts.has(id)) { |
| 25 | + return pendingScripts.get(id); |
| 26 | + } |
| 27 | + |
| 28 | + if (document.getElementById(id)) { |
| 29 | + return Promise.resolve(); |
| 30 | + } |
| 31 | + |
| 32 | + const promise = new Promise((resolve, reject) => { |
| 33 | + const script = document.createElement('script'); |
| 34 | + script.id = id; |
| 35 | + script.src = src; |
| 36 | + script.async = true; |
| 37 | + |
| 38 | + if (attrs) { |
| 39 | + Object.keys(attrs).forEach((key) => { |
| 40 | + if (key === 'defer' || key === 'async') { |
| 41 | + script[key] = Boolean(attrs[key]); |
| 42 | + } else { |
| 43 | + script.setAttribute(key, attrs[key]); |
| 44 | + } |
| 45 | + }); |
| 46 | + } |
| 47 | + |
| 48 | + script.onload = () => resolve(); |
| 49 | + script.onerror = () => reject(new Error('Failed to load script: ' + src)); |
| 50 | + document.head.appendChild(script); |
| 51 | + }); |
| 52 | + |
| 53 | + pendingScripts.set(id, promise); |
| 54 | + return promise; |
| 55 | + } |
| 56 | + |
| 57 | + function ensureMathJax(root) { |
| 58 | + if (!root.querySelector('.arithmatex')) { |
| 59 | + return; |
| 60 | + } |
| 61 | + |
| 62 | + if (window.MathJax && typeof window.MathJax.typesetPromise === 'function') { |
| 63 | + window.MathJax.typesetPromise(); |
| 64 | + return; |
| 65 | + } |
| 66 | + |
| 67 | + if (!mathjaxReady) { |
| 68 | + mathjaxReady = loadScript('mathjax-cdn-script', MATHJAX_SRC, { defer: true, crossorigin: 'anonymous' }) |
| 69 | + .then(() => { |
| 70 | + if (window.MathJax && window.MathJax.startup && window.MathJax.startup.promise) { |
| 71 | + return window.MathJax.startup.promise; |
| 72 | + } |
| 73 | + return undefined; |
| 74 | + }) |
| 75 | + .catch((error) => { |
| 76 | + console.error('[MathJax] Unable to load:', error); |
| 77 | + }); |
| 78 | + } |
| 79 | + |
| 80 | + mathjaxReady?.then(() => { |
| 81 | + if (window.MathJax && typeof window.MathJax.typesetPromise === 'function') { |
| 82 | + window.MathJax.typesetPromise(); |
| 83 | + } |
| 84 | + }); |
14 | 85 | } |
15 | | -}; |
16 | 86 |
|
17 | | -document$.subscribe(() => { |
18 | | - if (window.MathJax && typeof window.MathJax.typesetPromise === 'function') { |
19 | | - window.MathJax.typesetPromise(); |
| 87 | + function applyPangu(root) { |
| 88 | + const target = root.querySelector('.md-content'); |
| 89 | + if (!target || !window.pangu) { |
| 90 | + return; |
| 91 | + } |
| 92 | + |
| 93 | + if (typeof window.pangu.spacingElement === 'function') { |
| 94 | + window.pangu.spacingElement(target); |
| 95 | + } else if (typeof window.pangu.spacingPageBody === 'function') { |
| 96 | + window.pangu.spacingPageBody(); |
| 97 | + } |
| 98 | + } |
| 99 | + |
| 100 | + let panguLoading; |
| 101 | + |
| 102 | + function ensurePangu(root) { |
| 103 | + if (document.documentElement && document.documentElement.lang && document.documentElement.lang.indexOf('zh') !== 0) { |
| 104 | + return; |
| 105 | + } |
| 106 | + |
| 107 | + if (!root.querySelector('.md-content')) { |
| 108 | + return; |
| 109 | + } |
| 110 | + |
| 111 | + if (window.pangu) { |
| 112 | + applyPangu(root); |
| 113 | + return; |
| 114 | + } |
| 115 | + |
| 116 | + if (!panguLoading) { |
| 117 | + panguLoading = loadScript('pangu-script', PANGU_SRC, { defer: true }) |
| 118 | + .catch((error) => { |
| 119 | + console.error('[Pangu] Unable to load:', error); |
| 120 | + }); |
| 121 | + } |
| 122 | + |
| 123 | + panguLoading?.then(() => applyPangu(root)); |
| 124 | + } |
| 125 | + |
| 126 | + function handlePage() { |
| 127 | + const root = document; |
| 128 | + ensureMathJax(root); |
| 129 | + ensurePangu(root); |
20 | 130 | } |
21 | | - if (window.pangu && typeof window.pangu.spacingPageBody === 'function') { |
22 | | - window.pangu.spacingPageBody(); |
| 131 | + |
| 132 | + if (typeof document !== 'undefined') { |
| 133 | + document.addEventListener('DOMContentLoaded', handlePage); |
23 | 134 | } |
24 | | -}); |
25 | 135 |
|
| 136 | + if (typeof document$ !== 'undefined') { |
| 137 | + document$.subscribe(handlePage); |
| 138 | + } |
| 139 | +})(); |
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