1 files changed, 130 insertions, 0 deletions
diff --git a/assets/libs/katex@0.16.9/dist/contrib/copy-tex.js b/assets/libs/katex@0.16.9/dist/contrib/copy-tex.js
new file mode 100644
index 0000000..2897f1e
--- /dev/null
+++ b/assets/libs/katex@0.16.9/dist/contrib/copy-tex.js
@@ -0,0 +1,130 @@
+(function webpackUniversalModuleDefinition(root, factory) {
+	if(typeof exports === 'object' && typeof module === 'object')
+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define([], factory);
+	else {
+		var a = factory();
+		for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];
+	}
+})((typeof self !== 'undefined' ? self : this), function() {
+return /******/ (function() { // webpackBootstrap
+/******/ 	"use strict";
+var __webpack_exports__ = {};
+
+;// CONCATENATED MODULE: ./contrib/copy-tex/katex2tex.js
+// Set these to how you want inline and display math to be delimited.
+var defaultCopyDelimiters = {
+  inline: ['$', '$'],
+  // alternative: ['\(', '\)']
+  display: ['$$', '$$'] // alternative: ['\[', '\]']
+
+}; // Replace .katex elements with their TeX source (<annotation> element).
+// Modifies fragment in-place.  Useful for writing your own 'copy' handler,
+// as in copy-tex.js.
+
+function katexReplaceWithTex(fragment, copyDelimiters) {
+  if (copyDelimiters === void 0) {
+    copyDelimiters = defaultCopyDelimiters;
+  }
+
+  // Remove .katex-html blocks that are preceded by .katex-mathml blocks
+  // (which will get replaced below).
+  var katexHtml = fragment.querySelectorAll('.katex-mathml + .katex-html');
+
+  for (var i = 0; i < katexHtml.length; i++) {
+    var element = katexHtml[i];
+
+    if (element.remove) {
+      element.remove();
+    } else if (element.parentNode) {
+      element.parentNode.removeChild(element);
+    }
+  } // Replace .katex-mathml elements with their annotation (TeX source)
+  // descendant, with inline delimiters.
+
+
+  var katexMathml = fragment.querySelectorAll('.katex-mathml');
+
+  for (var _i = 0; _i < katexMathml.length; _i++) {
+    var _element = katexMathml[_i];
+
+    var texSource = _element.querySelector('annotation');
+
+    if (texSource) {
+      if (_element.replaceWith) {
+        _element.replaceWith(texSource);
+      } else if (_element.parentNode) {
+        _element.parentNode.replaceChild(texSource, _element);
+      }
+
+      texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1];
+    }
+  } // Switch display math to display delimiters.
+
+
+  var displays = fragment.querySelectorAll('.katex-display annotation');
+
+  for (var _i2 = 0; _i2 < displays.length; _i2++) {
+    var _element2 = displays[_i2];
+    _element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1];
+  }
+
+  return fragment;
+}
+/* harmony default export */ var katex2tex = (katexReplaceWithTex);
+;// CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.js
+ // Return <div class="katex"> element containing node, or null if not found.
+
+function closestKatex(node) {
+  // If node is a Text Node, for example, go up to containing Element,
+  // where we can apply the `closest` method.
+  var element = node instanceof Element ? node : node.parentElement;
+  return element && element.closest('.katex');
+} // Global copy handler to modify behavior on/within .katex elements.
+
+
+document.addEventListener('copy', function (event) {
+  var selection = window.getSelection();
+
+  if (selection.isCollapsed || !event.clipboardData) {
+    return; // default action OK if selection is empty or unchangeable
+  }
+
+  var clipboardData = event.clipboardData;
+  var range = selection.getRangeAt(0); // When start point is within a formula, expand to entire formula.
+
+  var startKatex = closestKatex(range.startContainer);
+
+  if (startKatex) {
+    range.setStartBefore(startKatex);
+  } // Similarly, when end point is within a formula, expand to entire formula.
+
+
+  var endKatex = closestKatex(range.endContainer);
+
+  if (endKatex) {
+    range.setEndAfter(endKatex);
+  }
+
+  var fragment = range.cloneContents();
+
+  if (!fragment.querySelector('.katex-mathml')) {
+    return; // default action OK if no .katex-mathml elements
+  }
+
+  var htmlContents = Array.prototype.map.call(fragment.childNodes, function (el) {
+    return el instanceof Text ? el.textContent : el.outerHTML;
+  }).join(''); // Preserve usual HTML copy/paste behavior.
+
+  clipboardData.setData('text/html', htmlContents); // Rewrite plain-text version.
+
+  clipboardData.setData('text/plain', katex2tex(fragment).textContent); // Prevent normal copy handling.
+
+  event.preventDefault();
+});
+__webpack_exports__ = __webpack_exports__["default"];
+/******/ 	return __webpack_exports__;
+/******/ })()
+;
+});
+\ No newline at end of file