/*
 Copyright (c) 2003-2021, CKSource - Frederico Knabben. All rights reserved.
 For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
*/
(function(){CKEDITOR.plugins.add("mathjax",{lang:"af,ar,az,bg,ca,cs,cy,da,de,de-ch,el,en,en-au,en-gb,eo,es,es-mx,et,eu,fa,fi,fr,gl,he,hr,hu,id,it,ja,km,ko,ku,lt,lv,nb,nl,no,oc,pl,pt,pt-br,ro,ru,sk,sl,sq,sr,sr-latn,sv,tr,tt,ug,uk,vi,zh,zh-cn",requires:"widget,dialog",icons:"mathjax",hidpi:!0,isSupportedEnvironment:function(){return!CKEDITOR.env.ie||8<CKEDITOR.env.version},init:function(b){var c=b.config.mathJaxClass||"math-tex";b.config.mathJaxLib||CKEDITOR.error("mathjax-no-config");b.widgets.add("mathjax",
{inline:!0,dialog:"mathjax",button:b.lang.mathjax.button,mask:!0,allowedContent:"span(!"+c+")",styleToAllowedContentRules:function(a){a=a.getClassesArray();if(!a)return null;a.push("!"+c);return"span("+a.join(",")+")"},pathName:b.lang.mathjax.pathName,template:'\x3cspan class\x3d"'+c+'" style\x3d"display:inline-block" data-cke-survive\x3d1\x3e\x3c/span\x3e',parts:{span:"span"},defaults:{math:"\\(x \x3d {-b \\pm \\sqrt{b^2-4ac} \\over 2a}\\)"},init:function(){var a=this.parts.span.getChild(0);a&&a.type==
CKEDITOR.NODE_ELEMENT&&a.is("iframe")||(a=new CKEDITOR.dom.element("iframe"),a.setAttributes({style:"border:0;width:0;height:0",scrolling:"no",frameborder:0,allowTransparency:!0,src:CKEDITOR.plugins.mathjax.fixSrc}),this.parts.span.append(a));this.once("ready",function(){CKEDITOR.env.ie&&a.setAttribute("src",CKEDITOR.plugins.mathjax.fixSrc);this.frameWrapper=new CKEDITOR.plugins.mathjax.frameWrapper(a,b);this.frameWrapper.setValue(this.data.math)})},data:function(){this.frameWrapper&&this.frameWrapper.setValue(this.data.math)},
upcast:function(a,b){if("span"==a.name&&a.hasClass(c)&&!(1<a.children.length||a.children[0].type!=CKEDITOR.NODE_TEXT)){b.math=CKEDITOR.tools.htmlDecode(a.children[0].value);var d=a.attributes;d.style=d.style?d.style+";display:inline-block":"display:inline-block";d["data-cke-survive"]=1;a.children[0].remove();return a}},downcast:function(a){a.children[0].replaceWith(new CKEDITOR.htmlParser.text(CKEDITOR.tools.htmlEncode(this.data.math)));var b=a.attributes;b.style=b.style.replace(/display:\s?inline-block;?\s?/,
"");""===b.style&&delete b.style;return a}});CKEDITOR.dialog.add("mathjax",this.path+"dialogs/mathjax.js");b.on("contentPreview",function(a){a.data.dataValue=a.data.dataValue.replace(/<\/head>/,'\x3cscript src\x3d"'+CKEDITOR.getUrl(b.config.mathJaxLib)+'"\x3e\x3c/script\x3e\x3c/head\x3e')});b.on("paste",function(a){a.data.dataValue=a.data.dataValue.replace(new RegExp("\x3cspan[^\x3e]*?"+c+".*?\x3c/span\x3e","ig"),function(a){return a.replace(/(<iframe.*?\/iframe>)/i,"")})})}});CKEDITOR.plugins.mathjax=
{};CKEDITOR.plugins.mathjax.fixSrc=CKEDITOR.env.gecko?"javascript:true":CKEDITOR.env.ie?"javascript:void((function(){"+encodeURIComponent("document.open();("+CKEDITOR.tools.fixDomain+")();document.close();")+"})())":"javascript:void(0)";CKEDITOR.plugins.mathjax.loadingIcon=CKEDITOR.plugins.get("mathjax").path+"images/loader.gif";CKEDITOR.plugins.mathjax.copyStyles=function(b,c){for(var a="color font-family font-style font-weight font-variant font-size".split(" "),e=0;e<a.length;e++){var d=a[e],g=
b.getComputedStyle(d);g&&c.setStyle(d,g)}};CKEDITOR.plugins.mathjax.trim=function(b){var c=b.indexOf("\\(")+2,a=b.lastIndexOf("\\)");return b.substring(c,a)};CKEDITOR.plugins.mathjax.frameWrapper=CKEDITOR.env.ie&&8==CKEDITOR.env.version?function(b,c){b.getFrameDocument().write('\x3c!DOCTYPE html\x3e\x3chtml\x3e\x3chead\x3e\x3cmeta charset\x3d"utf-8"\x3e\x3c/head\x3e\x3cbody style\x3d"padding:0;margin:0;background:transparent;overflow:hidden"\x3e\x3cspan style\x3d"white-space:nowrap;" id\x3d"tex"\x3e\x3c/span\x3e\x3c/body\x3e\x3c/html\x3e');
return{setValue:function(a){var e=b.getFrameDocument(),d=e.getById("tex");d.setHtml(CKEDITOR.plugins.mathjax.trim(CKEDITOR.tools.htmlEncode(a)));CKEDITOR.plugins.mathjax.copyStyles(b,d);c.fire("lockSnapshot");b.setStyles({width:Math.min(250,d.$.offsetWidth)+"px",height:e.$.body.offsetHeight+"px",display:"inline","vertical-align":"middle"});c.fire("unlockSnapshot")}}}:function(b,c){function a(){f=b.getFrameDocument();f.getById("preview")||(CKEDITOR.env.ie&&b.removeAttribute("src"),f.write('\x3c!DOCTYPE html\x3e\x3chtml\x3e\x3chead\x3e\x3cmeta charset\x3d"utf-8"\x3e\x3cscript type\x3d"text/x-mathjax-config"\x3eMathJax.Hub.Config( {showMathMenu: false,messageStyle: "none"} );function getCKE() {if ( typeof window.parent.CKEDITOR \x3d\x3d \'object\' ) {return window.parent.CKEDITOR;} else {return window.parent.parent.CKEDITOR;}}function update() {MathJax.Hub.Queue([ \'Typeset\', MathJax.Hub, this.buffer ],function() {getCKE().tools.callFunction( '+
n+" );});}MathJax.Hub.Queue( function() {getCKE().tools.callFunction("+p+');} );\x3c/script\x3e\x3cscript src\x3d"'+c.config.mathJaxLib+'"\x3e\x3c/script\x3e\x3c/head\x3e\x3cbody style\x3d"padding:0;margin:0;background:transparent;overflow:hidden"\x3e\x3cspan id\x3d"preview"\x3e\x3c/span\x3e\x3cspan id\x3d"buffer" style\x3d"display:none"\x3e\x3c/span\x3e\x3c/body\x3e\x3c/html\x3e'))}function e(){m=!0;h=k;c.fire("lockSnapshot");d.setHtml(h);g.setHtml("\x3cimg src\x3d"+CKEDITOR.plugins.mathjax.loadingIcon+
" alt\x3d"+c.lang.mathjax.loading+"\x3e");b.setStyles({height:"16px",width:"16px",display:"inline","vertical-align":"middle"});c.fire("unlockSnapshot");f.getWindow().$.update(h)}var d,g,h,k,f=b.getFrameDocument(),l=!1,m=!1,p=CKEDITOR.tools.addFunction(function(){g=f.getById("preview");d=f.getById("buffer");l=!0;k&&e();CKEDITOR.fire("mathJaxLoaded",b)}),n=CKEDITOR.tools.addFunction(function(){CKEDITOR.plugins.mathjax.copyStyles(b,g);g.setHtml(d.getHtml());c.fire("lockSnapshot");b.setStyles({height:0,
width:0});var a=Math.max(f.$.body.offsetHeight,f.$.documentElement.offsetHeight),l=Math.max(g.$.offsetWidth,f.$.body.scrollWidth);b.setStyles({height:a+"px",width:l+"px"});c.fire("unlockSnapshot");CKEDITOR.fire("mathJaxUpdateDone",b);h!=k?e():m=!1});b.on("load",a);a();return{setValue:function(a){k=CKEDITOR.tools.htmlEncode(a);l&&!m&&e()}}}})();