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Useful for writing your own 'copy' handler, // as in copy-tex.js. var katexReplaceWithTex = 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(null); } else { 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 { _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 // Global copy handler to modify behavior on .katex elements. document.addEventListener("copy", function (event) { var selection = window.getSelection(); if (selection.isCollapsed) { return; // default action OK if selection is empty } var fragment = selection.getRangeAt(0).cloneContents(); if (!fragment.querySelector(".katex-mathml")) { return; // default action OK if no .katex-mathml elements } // Preserve usual HTML copy/paste behavior. var html = []; for (var i = 0; i < fragment.childNodes.length; i++) { html.push(fragment.childNodes[i].outerHTML); } event.clipboardData.setData("text/html", html.join("")); // Rewrite plain-text version. event.clipboardData.setData( "text/plain", katex2tex(fragment).textContent, ); // Prevent normal copy handling. event.preventDefault(); }); // CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.webpack.js /** * This is the webpack entry point for KaTeX. As ECMAScript doesn't support * CSS modules natively, a separate entry point is used. */ /***/ }, /******/ ], )["default"]; });