Initial commit

2026-08-07 05:46:56 +00:00 · 2017-07-06 16:50:38 -04:00
commit 5b22a196fa
1021 changed files with 24150 additions and 0 deletions
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+import { withPluginApi } from 'discourse/lib/plugin-api';
+import loadScript from 'discourse/lib/load-script';
+
+let initializedMathJax = false;
+
+function initMathJax() {
+  if (initializedMathJax) { return; }
+
+  window.MathJax = {
+    jax: ['input/TeX', 'input/AsciiMath', 'input/MathML', 'output/CommonHTML'],
+    TeX: {extensions: ["AMSmath.js", "AMSsymbols.js", "autoload-all.js"]},
+    extensions: ["toMathML.js"],
+    showProcessingMessages: false,
+    root: '/plugins/discourse-math/mathjax'
+  };
+
+  initializedMathJax = true;
+}
+
+function ensureMathJax(){
+  initMathJax();
+  return loadScript('/plugins/discourse-math/mathjax/MathJax.1.7.1.js');
+}
+
+function decorate(elem, isPreview){
+  const $elem= $(elem);
+  const tag = elem.tagName === "DIV" ? "div" : "span";
+  const display = tag === "div" ? "; mode=display" : "";
+
+  const $mathWrapper = $(`<${tag} style="display: none;"><script type="math/tex${display}"></script></${tag}>`);
+  const $math = $mathWrapper.children();
+
+  $math.html($elem.text());
+  $elem.after($mathWrapper);
+
+  Em.run.later(this, ()=> {
+    window.MathJax.Hub.Queue(() => {
+      // don't bother processing previews removed from DOM
+      if (elem.parentElement.offsetParent !== null) {
+        window.MathJax.Hub.Typeset($math[0], ()=> {
+          $elem.remove();
+          $mathWrapper.show();
+        });
+      }
+    });
+  }, isPreview ? 200 : 0);
+}
+
+function mathjax($elem) {
+  const mathElems = $elem.find('.math');
+
+  if (mathElems.length > 0) {
+    const isPreview = $elem.hasClass('d-editor-preview');
+    ensureMathJax().then(()=>{
+      mathElems.each((idx,elem) => decorate(elem, isPreview));
+    });
+  }
+}
+
+function initializeMath(api) {
+  api.decorateCooked(mathjax);
+}
+
+export default {
+  name: "apply-math",
+  initialize(container) {
+    const siteSettings = container.lookup('site-settings:main');
+    if (siteSettings.discourse_math_enabled) {
+      withPluginApi('0.5', initializeMath);
+    }
+  }
+};