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/*
 
 Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
 
 For licensing, see LICENSE.md or http://ckeditor.com/license
 
 */

(function(){CKEDITOR.plugins.add("mathjax", {lang:"af,ar,bg,ca,cs,cy,da,de,de-ch,el,en,en-gb,eo,es,eu,fa,fi,fr,gl,he,hr,hu,id,it,ja,km,ko,ku,lt,nb,nl,no,pl,pt,pt-br,ro,ru,sk,sl,sq,sv,tr,tt,ug,uk,vi,zh,zh-cn", requires:"widget,dialog", icons:"mathjax", hidpi:!0, 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()}}}})();