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271
assets/bower_components/katex/dist/contrib/copy-tex.js
vendored
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271
assets/bower_components/katex/dist/contrib/copy-tex.js
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/************************************************************************/
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/******/ [
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/* 0 */
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/***/ function (module, exports, __webpack_require__) {
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// extracted by mini-css-extract-plugin
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/***/
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},
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/* 1 */
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/***/ function (module, __webpack_exports__, __webpack_require__) {
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"use strict";
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__webpack_require__.r(__webpack_exports__);
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// EXTERNAL MODULE: ./contrib/copy-tex/copy-tex.css
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var copy_tex = __webpack_require__(0);
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// CONCATENATED MODULE: ./contrib/copy-tex/katex2tex.js
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// Set these to how you want inline and display math to be delimited.
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var defaultCopyDelimiters = {
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inline: ["$", "$"],
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// alternative: ['\(', '\)']
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display: ["$$", "$$"], // alternative: ['\[', '\]']
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}; // Replace .katex elements with their TeX source (<annotation> element).
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// Modifies fragment in-place. Useful for writing your own 'copy' handler,
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// as in copy-tex.js.
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var katexReplaceWithTex = function katexReplaceWithTex(
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fragment,
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copyDelimiters,
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) {
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if (copyDelimiters === void 0) {
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copyDelimiters = defaultCopyDelimiters;
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}
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// Remove .katex-html blocks that are preceded by .katex-mathml blocks
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// (which will get replaced below).
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var katexHtml = fragment.querySelectorAll(
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".katex-mathml + .katex-html",
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);
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for (var i = 0; i < katexHtml.length; i++) {
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var element = katexHtml[i];
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if (element.remove) {
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element.remove(null);
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} else {
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element.parentNode.removeChild(element);
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}
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} // Replace .katex-mathml elements with their annotation (TeX source)
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// descendant, with inline delimiters.
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var katexMathml = fragment.querySelectorAll(".katex-mathml");
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for (var _i = 0; _i < katexMathml.length; _i++) {
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var _element = katexMathml[_i];
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var texSource = _element.querySelector("annotation");
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if (texSource) {
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if (_element.replaceWith) {
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_element.replaceWith(texSource);
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} else {
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_element.parentNode.replaceChild(texSource, _element);
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}
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texSource.innerHTML =
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copyDelimiters.inline[0] +
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texSource.innerHTML +
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copyDelimiters.inline[1];
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}
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} // Switch display math to display delimiters.
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var displays = fragment.querySelectorAll(".katex-display annotation");
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for (var _i2 = 0; _i2 < displays.length; _i2++) {
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var _element2 = displays[_i2];
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_element2.innerHTML =
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copyDelimiters.display[0] +
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_element2.innerHTML.substr(
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copyDelimiters.inline[0].length,
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_element2.innerHTML.length -
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copyDelimiters.inline[0].length -
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copyDelimiters.inline[1].length,
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) +
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copyDelimiters.display[1];
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}
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return fragment;
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};
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/* harmony default export */ var katex2tex = katexReplaceWithTex;
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// CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.js
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// Global copy handler to modify behavior on .katex elements.
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document.addEventListener("copy", function (event) {
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var selection = window.getSelection();
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if (selection.isCollapsed) {
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return; // default action OK if selection is empty
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}
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var fragment = selection.getRangeAt(0).cloneContents();
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if (!fragment.querySelector(".katex-mathml")) {
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return; // default action OK if no .katex-mathml elements
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} // Preserve usual HTML copy/paste behavior.
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var html = [];
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for (var i = 0; i < fragment.childNodes.length; i++) {
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html.push(fragment.childNodes[i].outerHTML);
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}
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event.clipboardData.setData("text/html", html.join("")); // Rewrite plain-text version.
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event.clipboardData.setData(
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"text/plain",
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katex2tex(fragment).textContent,
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); // Prevent normal copy handling.
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event.preventDefault();
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});
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// CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.webpack.js
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/**
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* This is the webpack entry point for KaTeX. As ECMAScript doesn't support
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* CSS modules natively, a separate entry point is used.
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*/
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/***/
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},
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/******/
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],
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)["default"];
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});
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