(function () {

var defs = {}; // id -> {dependencies, definition, instance (possibly undefined)}

// Used when there is no 'main' module.
// The name is probably (hopefully) unique so minification removes for releases.
var register_3795 = function (id) {
  var module = dem(id);
  var fragments = id.split('.');
  var target = Function('return this;')();
  for (var i = 0; i < fragments.length - 1; ++i) {
    if (target[fragments[i]] === undefined)
      target[fragments[i]] = {};
    target = target[fragments[i]];
  }
  target[fragments[fragments.length - 1]] = module;
};

var instantiate = function (id) {
  var actual = defs[id];
  var dependencies = actual.deps;
  var definition = actual.defn;
  var len = dependencies.length;
  var instances = new Array(len);
  for (var i = 0; i < len; ++i)
    instances[i] = dem(dependencies[i]);
  var defResult = definition.apply(null, instances);
  if (defResult === undefined)
     throw 'module [' + id + '] returned undefined';
  actual.instance = defResult;
};

var def = function (id, dependencies, definition) {
  if (typeof id !== 'string')
    throw 'module id must be a string';
  else if (dependencies === undefined)
    throw 'no dependencies for ' + id;
  else if (definition === undefined)
    throw 'no definition function for ' + id;
  defs[id] = {
    deps: dependencies,
    defn: definition,
    instance: undefined
  };
};

var dem = function (id) {
  var actual = defs[id];
  if (actual === undefined)
    throw 'module [' + id + '] was undefined';
  else if (actual.instance === undefined)
    instantiate(id);
  return actual.instance;
};

var req = function (ids, callback) {
  var len = ids.length;
  var instances = new Array(len);
  for (var i = 0; i < len; ++i)
    instances[i] = dem(ids[i]);
  callback.apply(null, instances);
};

var ephox = {};

ephox.bolt = {
  module: {
    api: {
      define: def,
      require: req,
      demand: dem
    }
  }
};

var define = def;
var require = req;
var demand = dem;
// this helps with minification when using a lot of global references
var defineGlobal = function (id, ref) {
  define(id, [], function () { return ref; });
};
/*jsc
["tinymce.plugins.mathjax.Plugin","tinymce.core.PluginManager","tinymce.plugins.mathjax.api.Api","tinymce.plugins.mathjax.api.Commands","tinymce.plugins.mathjax.core.FilterContent","tinymce.plugins.mathjax.core.LoadCss","tinymce.plugins.mathjax.ui.Buttons","global!tinymce.util.Tools.resolve","tinymce.plugins.mathjax.ui.Dialog","tinymce.core.html.Node","tinymce.plugins.mathjax.api.Settings","tinymce.plugins.mathjax.core.Nodes","tinymce.plugins.mathjax.core.Sanitize","tinymce.core.Env","global!window","global!tinymce","tinymce.core.dom.DOMUtils","tinymce.core.util.Tools","tinymce.plugins.mathjax.core.HtmlToData","tinymce.plugins.mathjax.core.UpdateHtml","tinymce.plugins.mathjax.ui.IframeContent","tinymce.core.html.SaxParser","tinymce.core.html.Schema","tinymce.core.html.Writer","tinymce.plugins.mathjax.core.Size"]
jsc*/
defineGlobal("global!tinymce.util.Tools.resolve", tinymce.util.Tools.resolve);
/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.PluginManager',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.PluginManager');
  }
);

/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.Env',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.Env');
  }
);

/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.util.Tools',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.util.Tools');
  }
);

/**
 * Settings.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.api.Settings',
  [
  ],
  function () {
    var getScripts = function (editor) {
      return editor.getParam('media_scripts');
    };

    var hasLiveEmbeds = function (editor) {
      return editor.getParam('media_live_embeds', true);
    };

    var shouldFilterHtml = function (editor) {
      return editor.getParam('media_filter_html', true);
    };

    var getUrlResolver = function (editor) {
      return editor.getParam('media_url_resolver');
    };

    var hasAltSource = function (editor) {
      return editor.getParam('media_alt_source', true);
    };

    var hasPoster = function (editor) {
      return editor.getParam('media_poster', true);
    };

    var hasDimensions = function (editor) {
      return editor.getParam('media_dimensions', true);
    };

    var getMathJaxLib = function () {
      return '//thuvienhoclieu.vn/js/mathjax/2.7.2/MathJax.js?config=TeX-AMS_CHTML';
    };

    var getMathJaxConfig = function () {
      // MathJax configuration, disable messages.
      var conf = {
        showMathMenu:false,
        messageStyle:'none'
      };
      return 'MathJax.Hub.Config(' + JSON.stringify(conf) + ');';
    };

    return {
      getScripts: getScripts,
      hasLiveEmbeds: hasLiveEmbeds,
      shouldFilterHtml: shouldFilterHtml,
      getUrlResolver: getUrlResolver,
      hasAltSource: hasAltSource,
      hasPoster: hasPoster,
      hasDimensions: hasDimensions,
      getMathJaxLib: getMathJaxLib,
      getMathJaxConfig: getMathJaxConfig
    };
  }
);

/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.html.SaxParser',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.html.SaxParser');
  }
);

/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.html.Schema',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.html.Schema');
  }
);

/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.dom.DOMUtils',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.dom.DOMUtils');
  }
);

/**
 * Size.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.Size',
  [
  ],
  function () {
    var trimPx = function (value) {
      return value.replace(/px$/, '');
    };

    var addPx = function (value) {
      return /^[0-9.]+$/.test(value) ? (value + 'px') : value;
    };

    var getSize = function (name) {
      return function (elm) {
        return elm ? trimPx(elm.style[name]) : '';
      };
    };

    var setSize = function (name) {
      return function (elm, value) {
        if (elm) {
          elm.style[name] = addPx(value);
        }
      };
    };

    return {
      getMaxWidth: getSize('maxWidth'),
      getMaxHeight: getSize('maxHeight'),
      setMaxWidth: setSize('maxWidth'),
      setMaxHeight: setSize('maxHeight')
    };
  }
);
/**
 * HtmlToData.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.HtmlToData',
  [
    'tinymce.core.util.Tools',
    'tinymce.core.html.SaxParser',
    'tinymce.core.html.Schema',
    'tinymce.core.dom.DOMUtils',
    'tinymce.plugins.mathjax.core.Size'
  ],
  function (Tools, SaxParser, Schema, DOMUtils, Size) {
//    var DOM = DOMUtils.DOM;


    var htmlToDataSax = function (prefixes, html) {
      var data = {};

      new SaxParser({
        validate: false,
        allow_conditional_comments: true,
        special: 'script,noscript',
        start: function (name, attrs) {
          data = Tools.extend(attrs.map, data);
        }
      }).parse(html);
      data.type = data.type || 'mathjax';

      return data;
    };

    var htmlToData = function (prefixes, html) {
      return htmlToDataSax(prefixes, html);
    };

    return {
      htmlToData: htmlToData
    };
  }
);
/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.html.Writer',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.html.Writer');
  }
);

/**
 * UpdateHtml.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.UpdateHtml',
  [
    'tinymce.core.html.Writer',
    'tinymce.core.html.SaxParser',
    'tinymce.core.html.Schema',
    'tinymce.core.dom.DOMUtils',
    'tinymce.plugins.mathjax.core.Size'
  ],
  function (Writer, SaxParser, Schema, DOMUtils, Size) {
//    var DOM = DOMUtils.DOM;

    var setAttributes = function (attrs, updatedAttrs) {
      var name;
      var i;
      var value;
      var attr;

      for (name in updatedAttrs) {
        value = "" + updatedAttrs[name];

        if (attrs.map[name]) {
          i = attrs.length;
          while (i--) {
            attr = attrs[i];

            if (attr.name === name) {
              if (value) {
                attrs.map[name] = value;
                attr.value = value;
              } else {
                delete attrs.map[name];
                attrs.splice(i, 1);
              }
            }
          }
        } else if (value) {
          attrs.push({
            name: name,
            value: value
          });

          attrs.map[name] = value;
        }
      }
    };

    var updateHtmlSax = function (html, data, updateAll) {
      var writer = new Writer();
      var sourceCount = 0;
      var hasImage;

      new SaxParser({
        validate: false,
        allow_conditional_comments: true,
        special: 'script,noscript',

        comment: function (text) {
          writer.comment(text);
        },

        cdata: function (text) {
          writer.cdata(text);
        },

        text: function (text, raw) {
          writer.text(text, raw);
        },

        start: function (name, attrs, empty) {
          switch (name) {
            case "video":
            case "object":
            case "embed":
            case "img":
            case "iframe":
              if (data.height !== undefined && data.width !== undefined) {
                setAttributes(attrs, {
                  width: data.width,
                  height: data.height
                });
              }
              break;
          }

          if (updateAll) {
            switch (name) {
              case "video":
                setAttributes(attrs, {
                  poster: data.poster,
                  src: ""
                });

                if (data.source2) {
                  setAttributes(attrs, {
                    src: ""
                  });
                }
                break;

              case "iframe":
                setAttributes(attrs, {
                  src: data.source1
                });
                break;

              case "source":
                sourceCount++;

                if (sourceCount <= 2) {
                  setAttributes(attrs, {
                    src: data["source" + sourceCount],
                    type: data["source" + sourceCount + "mime"]
                  });

                  if (!data["source" + sourceCount]) {
                    return;
                  }
                }
                break;

              case "img":
                if (!data.poster) {
                  return;
                }

                hasImage = true;
                break;
            }
          }

          writer.start(name, attrs, empty);
        },

        end: function (name) {
          if (name === "video" && updateAll) {
            for (var index = 1; index <= 2; index++) {
              if (data["source" + index]) {
                var attrs = [];
                attrs.map = {};

                if (sourceCount < index) {
                  setAttributes(attrs, {
                    src: data["source" + index],
                    type: data["source" + index + "mime"]
                  });

                  writer.start("source", attrs, true);
                }
              }
            }
          }

          if (data.poster && name === "object" && updateAll && !hasImage) {
            var imgAttrs = [];
            imgAttrs.map = {};

            setAttributes(imgAttrs, {
              src: data.poster,
              width: data.width,
              height: data.height
            });

            writer.start("img", imgAttrs, true);
          }

          writer.end(name);
        }
      }, new Schema({})).parse(html);

      return writer.getContent();
    };

    var updateHtml = function (html, data, updateAll) {
      return updateHtmlSax(html, data, updateAll);
    };

    return {
      updateHtml: updateHtml
    };
  }
);
/**
 * IframeContent.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.ui.IframeContent',
  [
    'tinymce.core.util.Tools',
    'tinymce.plugins.mathjax.api.Settings'
  ],
  function (Tools, Settings) {
    var getPreviewHtml = function (editor, content, updateDoneHandler) {
      var previewHtml, headHtml = '', encode = editor.dom.encode;

      headHtml += '<base href="' + encode(editor.documentBaseURI.getURI()) + '">';

      Tools.each(editor.contentCSS, function (url) {
        headHtml += '<link type="text/css" rel="stylesheet" href="' + encode(editor.documentBaseURI.toAbsolute(url)) + '">';
      });
      var bodyId = editor.settings.body_id || 'tinymce';
      headHtml += '<script type="text/x-mathjax-config">' +
        Settings.getMathJaxConfig() +
        // Get main editor form parent.
        'function getTinymce() {' +
        'if ( typeof window.parent.parent.tinymce == \'object\' ) {' +
        'return window.parent.parent.tinymce;' +
        '} else {' +
        'return window.parent.parent.tinymce;' +
        '}' +
        '}' +
        'function update(tex) {' +
        'var preview = document.getElementById(\'preview\');' +
        'if(preview){' +
        'preview.innerHTML = tex;' +
        'MathJax.Hub.Queue(' +
        '[ \'Typeset\', MathJax.Hub, \'preview\'],' +
        'function() {' +
        'getTinymce().tools.callFunction( ' + updateDoneHandler + ' );' +
        '}' +
        ');' +
        '}' +
        '}' +
        '</script>';
      headHtml += '<script type="text/javascript" src="' + Settings.getMathJaxLib() + '"></script>';
      if (bodyId.indexOf('=') !== -1) {
        bodyId = editor.getParam('body_id', '', 'hash');
        bodyId = bodyId[editor.id] || bodyId;
      }

      var bodyClass = editor.settings.body_class || '';
      if (bodyClass.indexOf('=') !== -1) {
        bodyClass = editor.getParam('body_class', '', 'hash');
        bodyClass = bodyClass[editor.id] || '';
      }

      var dirAttr = editor.settings.directionality ? ' dir="' + editor.settings.directionality + '"' : '';

      previewHtml = (
        '<!DOCTYPE html>' +
        '<html>' +
        '<head>' +
        headHtml +
        '</head>' +
        '<body id="' + encode(bodyId) + '" class="mce-content-body ' + encode(bodyClass) + '"' + encode(dirAttr) + ' style="text-align:center">' +
        '<div id="preview">' +
        content +
        '</div>' +
        '</body>' +
        '</html>'
      );

      return previewHtml;
    };

    var injectIframeContent = function (editor, iframe, sandbox, content, updateDoneHandler) {
      content = content ? '\\(' + content + '\\)' : '';
      var previewHtml = getPreviewHtml(editor, content, updateDoneHandler);

      if (!sandbox) {
        // IE 6-11 doesn't support data uris on iframes
        // so I guess they will have to be less secure since we can't sandbox on those
        // TODO: Use sandbox if future versions of IE supports iframes with data: uris.
        var doc = iframe.contentWindow.document;
        doc.open();
        doc.write(previewHtml);
        doc.close();
      } else {
        iframe.src = 'data:text/html;charset=utf-8,' + encodeURIComponent(previewHtml);
      }
      return {
        setLatex: function (tex) {
          iframe.contentWindow.update('\\(' + tex + '\\)');
        }
      };
    };

    return {
      injectIframeContent: injectIframeContent
    };
  }
);
defineGlobal("global!window", window);
defineGlobal("global!tinymce", tinymce);
/**
 * Dialog.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.ui.Dialog',
  [
    'tinymce.core.Env',
    'tinymce.core.util.Tools',
    'tinymce.plugins.mathjax.api.Settings',
    'tinymce.plugins.mathjax.core.HtmlToData',
    'tinymce.plugins.mathjax.core.UpdateHtml',
    'tinymce.plugins.mathjax.ui.IframeContent',
    'global!window',
    'global!tinymce'
  ],
  function (Env, Tools, Settings, HtmlToData, UpdateHtml, IframeContent, window, tinymce) {
    var embedChange = (Env.ie && Env.ie <= 8) ? 'onChange' : 'onInput';
    /*eslint-disable*/
    var getComputedStyle = function (elem, prop) {
        var res = '';
        if (elem.currentStyle) {
          res = elem.currentStyle[prop];
        } else if (window.getComputedStyle) {
          if (window.getComputedStyle.getPropertyValue) {
            res = window.getComputedStyle(elem, null).getPropertyValue(prop);
          } else {
            res = window.getComputedStyle(elem)[prop];
          }

        }
        return res;
      },
        setStyles = function (elem, styles) {
            var name;
            for (name in styles) {
              elem.style[name] = styles[name];
            }
          };
    var copyStyles = function (from, to) {
      var stylesToCopy = ['color', 'font-family', 'font-style', 'font-weight', 'font-variant', 'font-size'];

      for (var i = 0; i < stylesToCopy.length; i++) {
        var key = stylesToCopy[i],
          val = getComputedStyle(from, key);
        if (val) {
          to.style[key] = val;
        }
      }
    };
    // eslint-disable-next-line
    window.tinymce.fn_map = window.tinymce.fn_map||{length:0};
    // eslint-disable-next-line
    var map = window.tinymce.fn_map;
    var callFunction = function (id) {
      if (map[id]) {
        return map[id]();
      }
    };
    var addFunction = function (fn) {
      map.length = map.length + 1;
      var id = '' + map.length;
      map[id] = fn;
      return id;
    };
    // eslint-disable-next-line
    window.tinymce.tools = window.tinymce.tools||{};
    // eslint-disable-next-line
    window.tinymce.tools.callFunction = callFunction;
    /*eslint-enable*/
    var selectPlaceholder = function (editor, beforeObjects) {
      var i;
      var y;
      var afterObjects = editor.dom.select('span[data-mce-math]');

      // Find new image placeholder so we can select it
      for (i = 0; i < beforeObjects.length; i++) {
        for (y = afterObjects.length - 1; y >= 0; y--) {
          if (beforeObjects[i] === afterObjects[y]) {
            afterObjects.splice(y, 1);
          }
        }
      }

      editor.selection.select(afterObjects[0]);
    };

    var getData = function (editor) {
      var element = editor.selection.getNode();

      return element.getAttribute('data-mce-math') ?
        HtmlToData.htmlToData(Settings.getScripts(editor), editor.serializer.serialize(element, { selection: true })) :
        {};
    };
    var handleInsert = function (editor, html) {
      var beforeObjects = editor.dom.select('span[data-mce-math]');

      editor.insertContent('<span data-latex="' + html + '">\\(' + html + '\\)</span>');
      selectPlaceholder(editor, beforeObjects);
      editor.nodeChanged();
    };
    var submitForm = function (win, editor) {
      var data = win.toJSON();

      data.latex = UpdateHtml.updateHtml(data.latex, data);
      handleInsert(editor, data.latex);
    };
    var showDialog = function (editor) {
      var sandbox = false;//!Env.ie;
//      var dialogHtml = '<iframe src="javascript:\'\'" frameborder="0"' + (sandbox ? ' sandbox="allow-scripts"' : '') + '></iframe>';
      var data = getData(editor);
      var iframe;
      var updateValueOnChange = function () {
        data = Tools.extend({}, HtmlToData.htmlToData(Settings.getScripts(editor), this.value()));
        this.parent().parent().fromJSON(data);
        iframe && iframe.setLatex(this.value());
      };
      var textbox = {
        type: 'textbox',
        name: 'latex',
        multiline: true,
        minWidth: 600,
        minHeight: 80,
        spellcheck: false,
        style: 'direction: ltr; text-align: left;',
        value: data['data-latex'] || ''
      };
      textbox[embedChange] = updateValueOnChange;
      var win = editor.windowManager.open({
        title: 'Mathjax Preview',
        data: data,
        body: [
          textbox,
          {
            type: 'iframe',
            src: 'javascript:\'\'',
            frameborder: 0,
            minHeight: 150
          }
        ],
        onSubmit: function (e) {
          submitForm(win, editor);
        },
        onPostRender: function (e) {
          var iframeElm = e.control.getEl('body iframe');
          if (sandbox) {
            iframeElm.setAttribute('sandbox', 'allow-scripts');
          }
          /*eslint-disable*/
          var updateDoneHandler = addFunction(function(){
//            var doc = iframe.contentDocument;
//            var preview = doc.getElementById('preview');
//            setStyles(iframe, {
//              height: 0,
//              width: 0
//            });
//            var height = Math.max(doc.body.offsetHeight, doc.documentElement.offsetHeight),
//              width = Math.max(preview.offsetWidth, doc.body.scrollWidth);
//            setStyles(iframe, {
//              height: height + 'px',
//              width: width + 'px'
//            });
          });
          /*eslint-enable*/
          iframe = IframeContent.injectIframeContent(editor, iframeElm, sandbox, data['data-latex'] || '', updateDoneHandler);
        }
      });
    };

    return {
      showDialog: showDialog
    };
  }
);
/**
 * Api.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.api.Api',
  [
    'tinymce.plugins.mathjax.ui.Dialog'
  ],
  function (Dialog) {
    var get = function (editor) {
      var showDialog = function () {
        Dialog.showDialog(editor);
      };

      return {
        showDialog: showDialog
      };
    };

    return {
      get: get
    };
  }
);


/**
 * Commands.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.api.Commands',
  [
    'tinymce.plugins.mathjax.ui.Dialog'
  ],
  function (Dialog) {
    var register = function (editor) {
      var showDialog = function () {
        Dialog.showDialog(editor);
      };

      editor.addCommand('mceMath', showDialog);
    };

    return {
      register: register
    };
  }
);


/**
 * ResolveGlobal.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.core.html.Node',
  [
    'global!tinymce.util.Tools.resolve'
  ],
  function (resolve) {
    return resolve('tinymce.html.Node');
  }
);

/**
 * Sanitize.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.Sanitize',
  [
    'tinymce.core.html.SaxParser',
    'tinymce.core.html.Schema',
    'tinymce.core.html.Writer',
    'tinymce.core.util.Tools',
    'tinymce.plugins.mathjax.api.Settings'
  ],
  function (SaxParser, Schema, Writer, Tools, Settings) {
    var sanitize = function (editor, html) {
      if (Settings.shouldFilterHtml(editor) === false) {
        return html;
      }

      var writer = new Writer();
      var blocked;

      new SaxParser({
        validate: false,
        allow_conditional_comments: false,
        special: 'script,noscript',

        comment: function (text) {
          writer.comment(text);
        },

        cdata: function (text) {
          writer.cdata(text);
        },

        text: function (text, raw) {
          writer.text(text, raw);
        },

        start: function (name, attrs, empty) {
          blocked = true;

          if (name === 'script' || name === 'noscript') {
            return;
          }

          for (var i = 0; i < attrs.length; i++) {
            if (attrs[i].name.indexOf('on') === 0) {
              return;
            }

            if (attrs[i].name === 'style') {
              attrs[i].value = editor.dom.serializeStyle(editor.dom.parseStyle(attrs[i].value), name);
            }
          }

          writer.start(name, attrs, empty);
          blocked = false;
        },

        end: function (name) {
          if (blocked) {
            return;
          }

          writer.end(name);
        }
      }, new Schema({})).parse(html);

      return writer.getContent();
    };

    return {
      sanitize: sanitize
    };
  }
);
/**
 * Nodes.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.Nodes',
  [
    'tinymce.core.html.Node',
    'tinymce.plugins.mathjax.core.Sanitize'
  ],
  function (Node, Sanitize) {

    var createPreviewIframeMathjaxNode = function (editor, node, pluginUrl) {
      var previewWrapper;
      var previewNode;
      var shimNode;
      var name = node.name;

      previewWrapper = new Node('span', 1);
      previewWrapper.attr({
        contentEditable: 'false',
        style: node.attr('style'),
        "data-mce-math": name,
        "class": "mce-preview-math mce-object-" + name
      });

      retainAttributesAndInnerHtml(editor, node, previewWrapper);

//      previewNode = new Node(name, 1);
      previewNode = new Node('img', 1);
      previewNode.attr({
        src: pluginUrl + '/img/loader.gif',
        class: 'mce-latex-loader'
      });

      shimNode = new Node('span', 1);
      shimNode.attr('class', 'mce-shim');

      previewWrapper.append(previewNode);
      previewWrapper.append(shimNode);

      return previewWrapper;
    };

    var retainAttributesAndInnerHtml = function (editor, sourceNode, targetNode) {
      var attrName;
      var attrValue;
      var attribs;
      var ai;
      var innerHtml;

      // Prefix all attributes except width, height and style since we
      // will add these to the placeholder
      attribs = sourceNode.attributes;
      ai = attribs.length;
      while (ai--) {
        attrName = attribs[ai].name;
        attrValue = attribs[ai].value;

        if (attrName !== "width" && attrName !== "height" && attrName !== "style") {
          if (attrName === "data" || attrName === "src") {
            attrValue = editor.convertURL(attrValue, attrName);
          }

          targetNode.attr('data-mce-p-' + attrName, attrValue);
        }
      }

      // Place the inner HTML contents inside an escaped attribute
      // This enables us to copy/paste the fake object
      innerHtml = sourceNode.firstChild && sourceNode.firstChild.value;
      if (innerHtml) {
        targetNode.attr("data-mce-html", escape(Sanitize.sanitize(editor, innerHtml)));
        targetNode.firstChild = null;
      }
    };

    var placeHolderConverter = function (editor, pluginUrl) {
      return function (nodes) {
        var i = nodes.length;
        var node;

        while (i--) {
          node = nodes[i];
          if (!node.parent) {
            continue;
          }

          if (node.parent.attr('data-mce-object') || node.parent.attr('data-mce-math')) {
            continue;
          }

          if (node.attr('data-latex')) {
            node.replace(createPreviewIframeMathjaxNode(editor, node, pluginUrl));
          }
        }
      };
    };

    return {
      placeHolderConverter: placeHolderConverter
    };
  }
);
/**
 * FilterContent.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.FilterContent',
  [
    'tinymce.core.html.Node',
    'tinymce.plugins.mathjax.api.Settings',
    'tinymce.plugins.mathjax.core.Nodes',
    'tinymce.plugins.mathjax.core.Sanitize',
    'tinymce.core.Env',
    'global!window',
    'global!tinymce'
  ],
  function (Node, Settings, Nodes, Sanitize, Env, window, tinymce) {
    var mathJaxLib = Settings.getMathJaxLib();
    var fixDomain = function () {
      var domain;
      //eslint-disable-next-line
      while (1) {
        try {
                // Try to access the parent document. It throws
                // "access denied" if restricted by the "Same Origin" policy.
          domain = window.parent.document.domain;
          break;
        } catch (e) {
            // Calculate the value to set to document.domain.
          domain = domain ?
                    // If it is not the first pass, strip one part of the
                    // name. E.g.  "test.example.com"  => "example.com"
            domain.replace(/.+?(?:\.|$)/, '') :
                    // In the first pass, we'll handle the
                    // "document.domain = document.domain" case.
            document.domain;

            // Stop here if there is no more domain parts available.
          if (!domain) {
            break;
          }

          document.domain = domain;
        }
      }

      return !!domain;
    };
    // eslint-disable no-alert, no-console
    // eslint-disable-line
    // eslint-disable-next-line
    // eslint-disable-line no-alert, quotes, semi
    // eslint-disable-line no-alert, quotes, semi
    // eslint-enable no-alert, no-console

    /*eslint-disable*/
    var fixSrc =
        // In Firefox src must exist and be different than about:blank to emit load event.
        Env.gecko ? 'javascript:true' : // jshint ignore:line
        // Support for custom document.domain in IE.
        Env.ie ? 'javascript:' + // jshint ignore:line
                                        'void((function(){' + encodeURIComponent(
                                                'document.open();' +
                                                '(' + fixDomain + ')();' +
                                                'document.close();'
                                        ) + '})())' :
        // In Chrome src must be undefined to emit load event.
                                        'javascript:void(0)'; // jshint ignore:line
    var loadingIcon;
    var trim = function (value) {
      var begin = value.indexOf('\\(') + 2,
        end = value.lastIndexOf('\\)');

      return value.substring(begin, end);
    };
    
    var getComputedStyle = function (elem, prop) {
        var res = '';
        if (elem.currentStyle) {
          res = elem.currentStyle[prop];
        } else if (window.getComputedStyle) {
          if (window.getComputedStyle.getPropertyValue) {
            res = window.getComputedStyle(elem, null).getPropertyValue(prop);
          } else {
            res = window.getComputedStyle(elem)[prop];
          }

        }
        return res;
      },
        setStyles = function (elem, styles) {
            var name;
            for (name in styles) {
              elem.style[name] = styles[name];
            }
          };
          /*eslint-enable*/
    var copyStyles = function (from, to) {
      var stylesToCopy = ['color', 'font-family', 'font-style', 'font-weight', 'font-variant', 'font-size'];

      for (var i = 0; i < stylesToCopy.length; i++) {
        var key = stylesToCopy[i],
          val = getComputedStyle(from, key);
        if (val) {
          to.style[key] = val;
        }
      }
    };
    // eslint-disable-next-line
    window.tinymce.fn_map = window.tinymce.fn_map||{length:0};
    // eslint-disable-next-line
    var map = window.tinymce.fn_map;
    var callFunction = function (id) {
      if (map[id]) {
        return map[id]();
      }
    };
    var addFunction = function (fn) {
      map.length = map.length + 1;
      var id = '' + map.length;
      map[id] = fn;
      return id;
    };
    // eslint-disable-next-line
    window.tinymce.tools = window.tinymce.tools||{};
    // eslint-disable-next-line
    window.tinymce.tools.callFunction = callFunction;
    var updateSize = function (iframe, preview, editor) {
      editor.fire('lockSnapshot');
      var doc = iframe.contentDocument;
      setStyles(iframe, {
        height: 0,
        width: 0
      });

      // Set iFrame dimensions.
      var height = Math.max(doc.body.offsetHeight, doc.documentElement.offsetHeight),
        width = Math.max(preview.offsetWidth, doc.body.scrollWidth);
      setStyles(iframe, {
        height: height + 'px',
        width: width + 'px'
      });
      iframe.setAttribute('data-state', 2);
      editor.fire('unlockSnapshot');
    };
    var frameWrapper = function (editor, iframe) {
      var buffer, preview, value, newValue,
        doc = iframe.contentDocument,
        // Is MathJax loaded and ready to work.
        isInit = false,
        // Is MathJax parsing Tex.
        isRunning = false,
        // Function called when MathJax is loaded.
        loadedHandler = addFunction(function () {
          preview = doc.getElementById('preview');
          buffer = doc.getElementById('buffer');
          isInit = true;

          if (newValue) {
            update();
          }
          // Private! For test usage only.
//          CKEDITOR.fire('mathJaxLoaded', iframe);
        }),
        // Function called when MathJax finish his job.
        updateDoneHandler = addFunction(function () {
          preview = doc.getElementById('preview');
          buffer = doc.getElementById('buffer');
          copyStyles(iframe, preview);

          preview.innerHTML = buffer.innerHTML;
          if (Env.gecko) {
            setTimeout(function () {
              updateSize(iframe, preview, editor);
            }, 100);
          } else {
            updateSize(iframe, preview, editor);
          }

          // Private! For test usage only.
//          CKEDITOR.fire('mathJaxUpdateDone', iframe);

          // If value changed in the meantime update it again.
          if (value !== newValue) {
            update();
          } else {
            isRunning = false;
          }
        });
      if (iframe.addEventListener) {
        iframe.addEventListener('load', load, false);
      } else {
        iframe.attachEvent('onload', load);
      }

      load();

      function load() {
        //eslint-disable-next-line
        if (!!!doc || !!!doc.getElementById || doc.getElementById('preview')) {
          return;
        }
        // Because of IE9 bug in a src attribute can not be javascript
        // when you undo (http://dev.ckeditor.com/ticket/10930). If you have iFrame with javascript in src
        // and call insertBefore on such element then IE9 will see crash.
        if (Env.ie) {
          iframe.removeAttribute('src');
        }

        doc.open();
        doc.write('<!DOCTYPE html>' +
                '<html>' +
                '<head>' +
                '<meta charset="utf-8">' +
                '<script type="text/x-mathjax-config">' + Settings.getMathJaxConfig() +
                // Get main editor form parent.
                'function getTinymce() {' +
                'if ( typeof window.parent.parent.tinymce == \'object\' ) {' +
                'return window.parent.parent.tinymce;' +
                '} else {' +
                'return window.parent.parent.tinymce;' +
                '}' +
                '}' +
                // Run MathJax.Hub with its actual parser and call callback function after that.
                // Because MathJax.Hub is asynchronous create MathJax.Hub.Queue to wait with callback.
                'function update() {' +
                'MathJax.Hub.Queue(' +
                '[ \'Typeset\', MathJax.Hub, \'buffer\'],' +
                'function() {' +
                'getTinymce().tools.callFunction( ' + updateDoneHandler + ' );' +
                '}' +
                ');' +
                '}' +
                // Run MathJax for the first time, when the script is loaded.
                // Callback function will be called then it's done.
                'MathJax.Hub.Queue( function() {' +
                'getTinymce().tools.callFunction(' + loadedHandler + ');' +
                '} );' +
                '</script>' +
                // Load MathJax lib.
                '<script src="' + (mathJaxLib) + '"></script>' +
                '</head>' +
                '<body style="padding:0;margin:0;background:transparent;overflow:hidden">' +
                '<span id="preview"><img src=' + loadingIcon + ' alt="loading..."></span>' +
                // Render everything here and after that copy it to the preview.
                '<span id="buffer" style="display:none"></span>' +
                '</body>' +
                '</html>');
      }
      doc.close();
      // Run MathJax parsing Tex.
      function update() {
        isRunning = true;

        value = newValue;

        editor.fire('lockSnapshot');

        buffer.innerHTML = value;

        // Set loading indicator.
        preview.innerHTML = '<img src=' + loadingIcon + ' alt="loading...">';

        setStyles(iframe, {
          height: '16px',
          width: '16px',
          display: 'inline',
          'vertical-align': 'middle'
        });

        editor.fire('unlockSnapshot');

        // Run MathJax.
        iframe.contentWindow.update(value);
      }

      return {
        /**
         * Sets the TeX value to be displayed in the `iframe` element inside
         * the editor. This function will activate the MathJax
         * library which interprets TeX expressions and converts them into
         * their representation that is displayed in the editor.
         *
         * @param {String} value TeX string.
         */
        setValue: function (value) {
          newValue = '\\(' + value + '\\)';//CKEDITOR.tools.htmlEncode(value);

          if (isInit && !isRunning) {
            update();
          }
        }
      };
    };
    var setup = function (editor, pluginUrl) {
      loadingIcon = pluginUrl + '/img/loader.gif';
      editor.on('preInit', function () {

        // Allow elements
        //editor.schema.addValidElements(
        //  'object[id|style|width|height|classid|codebase|*],embed[id|style|width|height|type|src|*],video[*],audio[*]'
        //);

        editor.parser.addAttributeFilter('data-latex', Nodes.placeHolderConverter(editor, pluginUrl));
//        function (nodes, name) {
//          console.log(nodes, name);//Chuyển từ dữ liệu div,span chứa latex sang giá trị preview editor
//        });

        // Converts iframe, video etc into placeholder images
//        editor.parser.addNodeFilter('iframe,video,audio,object,embed,script',
//          Nodes.placeHolderConverter(editor));

        // Replaces placeholder images with real elements for video, object, iframe etc
        editor.serializer.addAttributeFilter('data-mce-math', function (nodes, name) {
          var i = nodes.length;
          var node;
          var realElm;
          var ai;
          var attribs;
          var innerHtml;
          var innerNode;
          var realElmName;
          var className;

          while (i--) {
            node = nodes[i];
            if (!node.parent) {
              continue;
            }

            realElmName = node.attr(name);
            if (realElmName === 'math' || realElmName === 'latex') {
              realElm = new Node('div', 1);
            } else {
              realElm = new Node(realElmName, 1);
            }

            // Add width/height to everything
            className = node.attr('class');
            if (className && className.indexOf('mce-preview-math') !== -1) {
              realElm.attr({
                width: node.firstChild.attr('width'),
                height: node.firstChild.attr('height')
              });
            } else {
              realElm.attr({
                width: node.attr('width'),
                height: node.attr('height')
              });
            }

            realElm.attr({
              style: node.attr('style')
            });

            // Unprefix all placeholder attributes
            attribs = node.attributes;
            ai = attribs.length;
            while (ai--) {
              var attrName = attribs[ai].name;

              if (attrName.indexOf('data-mce-p-') === 0) {
                realElm.attr(attrName.substr(11), attribs[ai].value);
              }
            }

            if (realElmName === "script") {
              realElm.attr('type', 'text/javascript');
            }
            if (realElmName === 'math' || realElmName === 'latex') {
              innerHtml = node.attr('data-mce-latex');
              realElm.attr('data-latex', innerHtml);
              innerHtml = '$' + innerHtml + '$';
            } else {
              // Inject innerhtml
              innerHtml = node.attr('data-mce-html');
            }
            if (innerHtml) {
              innerNode = new Node('#text', 3);
              innerNode.raw = true;
              innerNode.value = Sanitize.sanitize(editor, unescape(innerHtml));
              realElm.append(innerNode);
            }

            node.replace(realElm);
          }
        });
      });

      editor.on('setContent', function (e) {
        // TODO: This shouldn't be needed there should be a way to mark bogus
        // elements so they are never removed except external save
        editor.$('span.mce-preview-math').each(function (index, elm) {
          var $elm = editor.$(elm);
          var ifa = $elm.find('iframe');
          var needUpdated = $elm.find('img.mce-latex-loader').length > 0;
          //validate element has created
          if (ifa.length > 0 && $elm.find('span.mce-object-iframe').length > 0) {
            $elm.html('<img class="mce-latex-loader" src="' + loadingIcon + '" alt="loading..."><span class="mce-shim"></span>');
            needUpdated = true;
          }

          if (!needUpdated) {
            return;
          }
          var iframe = editor.getDoc().createElement('iframe');
          editor.$.each({
            style: 'border:0;width:16px;height:16px',
            scrolling: 'no',
            frameborder: 0,
            allowTransparency: true,
            src: fixSrc,
            'data-state': 1
          }, function (i, v) {
            iframe.setAttribute(i, v);
          });
          $elm.find('img.mce-latex-loader').replaceWith(iframe);
          var wrap = frameWrapper(editor, iframe);
          wrap.setValue($elm.attr('data-mce-p-data-latex'));
          if ($elm.find('span.mce-shim', elm).length === 0) {
            $elm.append('<span class="mce-shim"></span>');
          }
        });
      });
    };

    return {
      setup: setup
    };
  }
);


/**
 * LoadCss.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.core.LoadCss',
  [
    'tinymce.core.dom.DOMUtils',
    'tinymce.core.util.Tools'
  ],
  function (DOMUtils, Tools) {
    var cssId = DOMUtils.DOM.uniqueId();

    var load = function (doc, url) {
      var linkElements = Tools.toArray(doc.getElementsByTagName('link'));
      var matchingLinkElms = Tools.grep(linkElements, function (head) {
        return head.id === cssId;
      });

      if (matchingLinkElms.length === 0) {
        var linkElm = DOMUtils.DOM.create('link', {
          id: cssId,
          rel: 'stylesheet',
          href: url
        });

        doc.getElementsByTagName('head')[0].appendChild(linkElm);
      }
    };

    return {
      load: load
    };
  }
);
/**
 * Buttons.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.ui.Buttons',
  [
  ],
  function () {
    var register = function (editor, pluginUrl) {
      editor.addButton('mathjax', {
        icon:'mathjax',
//        image: pluginUrl + '/img/mathjax.png',
        tooltip: 'Insert/edit math',
        cmd: 'mceMath',
        stateSelector: ['span[data-mce-math]']
      });

      editor.addMenuItem('mathjax', {
        icon: 'mathjax',
//        image: pluginUrl + '/img/mathjax.png',
        text: 'Math',
        cmd: 'mceMath',
        context: 'insert',
        prependToContext: true
      });
    };

    return {
      register: register
    };
  }
);


/**
 * Plugin.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define(
  'tinymce.plugins.mathjax.Plugin',
  [
    'tinymce.core.PluginManager',
    'tinymce.plugins.mathjax.api.Api',
    'tinymce.plugins.mathjax.api.Commands',
    'tinymce.plugins.mathjax.core.FilterContent',
    'tinymce.plugins.mathjax.core.LoadCss',
    'tinymce.plugins.mathjax.ui.Buttons'
  ],
  function (PluginManager, Api, Commands, FilterContent, LoadCss, Buttons) {
    var handleError = function (editor) {
      return function (error) {
        var errorMessage = error && error.msg ?
          'Media embed handler error: ' + error.msg :
          'Media embed handler threw unknown error.';
        editor.notificationManager.open({ type: 'error', text: errorMessage });
      };
    };
    PluginManager.add('mathjax', function (editor, pluginUrl) {
      editor.on('init', function () {
        setTimeout(function () {
          try {
            LoadCss.load(editor.editorContainer.ownerDocument, pluginUrl + '/css/mathjax-button.css');
          } catch (e) {
            (handleError(editor))(e);
          }
          LoadCss.load(editor.getDoc(), pluginUrl + '/css/mathjax.css');
        }, 200);
      });
      Commands.register(editor, pluginUrl);
      Buttons.register(editor, pluginUrl);
      FilterContent.setup(editor, pluginUrl);
      return Api.get(editor, pluginUrl);
    });

    return function () { };
  }
);


dem('tinymce.plugins.mathjax.Plugin')();
})();