text: /**
   * summernote.js
   * (c) 2013~ Alan Hong
   * summernote may be freely distributed under the MIT license./
   */
  (function (factory) {
    /* global define */
    if (typeof define === 'function' && define.amd) {
      // AMD. Register as an anonymous module.
      define(['jquery', 'codemirror'], factory);
    } else {
      // Browser globals: jQuery, CodeMirror
      factory(window.jQuery, window.CodeMirror);
    }
  }(function ($, CodeMirror) {
    
  
  
    // Array.prototype.reduce fallback
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
    if ('function' !== typeof Array.prototype.reduce) {
      Array.prototype.reduce = function (callback, optInitialValue) {
        var idx, value, length = this.length >>> 0, isValueSet = false;
        if (1 < arguments.length) {
          value = optInitialValue;
          isValueSet = true;
        }
        for (idx = 0; length > idx; ++idx) {
          if (this.hasOwnProperty(idx)) {
            if (isValueSet) {
              value = callback(value, this[idx], idx, this);
            } else {
              value = this[idx];
              isValueSet = true;
            }
          }
        }
        if (!isValueSet) {
          throw new TypeError('Reduce of empty array with no initial value');
        }
        return value;
      };
    }
  
    /**
     * object which check platform/agent
     */
    var agent = {
      bMac: navigator.appVersion.indexOf('Mac') > -1,
      bMSIE: navigator.userAgent.indexOf('MSIE') > -1,
      bFF: navigator.userAgent.indexOf('Firefox') > -1,
      bCodeMirror: !!CodeMirror
    };
  
    /**
     * func utils (for high-order func's arg)
     */
    var func = (function () {
      var eq = function (elA) {
        return function (elB) {
          return elA === elB;
        };
      };
  
      var eq2 = function (elA, elB) {
        return elA === elB;
      };
  
      var fail = function () {
        return false;
      };
  
      var not = function (f) {
        return function () {
          return !f.apply(f, arguments);
        };
      };
  
      var self = function (a) {
        return a;
      };
  
      return {
        eq: eq,
        eq2: eq2,
        fail: fail,
        not: not,
        self: self
      };
    })();
  
    /**
     * list utils
     */
    var list = (function () {
      var head = function (array) { return array[0]; };
      var last = function (array) { return array[array.length - 1]; };
      var initial = function (array) { return array.slice(0, array.length - 1); };
      var tail = function (array) { return array.slice(1); };
    
      /**
       * get sum from a list
       * @param {array} array - array
       * @param {function} fn - iterator
       */
      var sum = function (array, fn) {
        fn = fn || func.self;
        return array.reduce(function (memo, v) {
          return memo + fn(v);
        }, 0);
      };
    
      /**
       * returns a copy of the collection with array type.
       * @param {collection} collection - collection eg) node.childNodes, ...
       */
      var from = function (collection) {
        var result = [], idx = -1, length = collection.length;
        while (++idx < length) {
          result[idx] = collection[idx];
        }
        return result;
      };
    
      /**
       * cluster item by second function
       * @param {array} array - array
       * @param {function} fn - predicate function for cluster rule
       */
      var clusterBy = function (array, fn) {
        if (array.length === 0) { return []; }
        var aTail = tail(array);
        return aTail.reduce(function (memo, v) {
          var aLast = last(memo);
          if (fn(last(aLast), v)) {
            aLast[aLast.length] = v;
          } else {
            memo[memo.length] = [v];
          }
          return memo;
        }, [[head(array)]]);
      };
    
      /**
       * returns a copy of the array with all falsy values removed
       * @param {array} array - array
       * @param {function} fn - predicate function for cluster rule
       */
      var compact = function (array) {
        var aResult = [];
        for (var idx = 0, sz = array.length; idx < sz; idx ++) {
          if (array[idx]) { aResult.push(array[idx]); }
        }
        return aResult;
      };
    
      return { head: head, last: last, initial: initial, tail: tail,
               sum: sum, from: from, compact: compact, clusterBy: clusterBy };
    })();
  
    /**
     * dom utils
     */
    var dom = (function () {
      /**
       * returns predicate which judge whether nodeName is same
       */
      var makePredByNodeName = function (sNodeName) {
        // nodeName of element is always uppercase.
        return function (node) {
          return node && node.nodeName === sNodeName;
        };
      };
    
      var isPara = function (node) {
        // Chrome(v31.0), FF(v25.0.1) use DIV for paragraph
        return node && /^DIV|^P|^LI|^H[1-7]/.test(node.nodeName);
      };
    
      var emptyPara = '<p><br/></p>';
    
      var isList = function (node) {
        return node && /^UL|^OL/.test(node.nodeName);
      };
    
      var isEditable = function (node) {
        return node && $(node).hasClass('note-editable');
      };
    
      var isControlSizing = function (node) {
        return node && $(node).hasClass('note-control-sizing');
      };
    
      /**
       * find nearest ancestor predicate hit
       * @param {element} node
       * @param {function} pred - predicate function
       */
      var ancestor = function (node, pred) {
        while (node) {
          if (pred(node)) { return node; }
          node = node.parentNode;
        }
        return null;
      };
    
      /**
       * returns new array of ancestor nodes (until predicate hit).
       * @param {element} node
       * @param {function} [optional] pred - predicate function
       */
      var listAncestor = function (node, pred) {
        pred = pred || func.fail;
    
        var aAncestor = [];
        ancestor(node, function (el) {
          aAncestor.push(el);
          return pred(el);
        });
        return aAncestor;
      };
    
      /**
       * returns common ancestor node between two nodes.
       * @param {element} nodeA
       * @param {element} nodeB
       */
      var commonAncestor = function (nodeA, nodeB) {
        var aAncestor = listAncestor(nodeA);
        for (var n = nodeB; n; n = n.parentNode) {
          if ($.inArray(n, aAncestor) > -1) { return n; }
        }
        return null; // difference document area
      };
    
      /**
       * listing all Nodes between two nodes.
       * @param {element} nodeA
       * @param {element} nodeB
       */
      var listBetween = function (nodeA, nodeB) {
        var aNode = [];
    
        var bStart = false, bEnd = false;
        var fnWalk = function (node) {
          if (!node) { return; } // traverse fisnish
          if (node === nodeA) { bStart = true; } // start point
          if (bStart && !bEnd) { aNode.push(node); } // between
          if (node === nodeB) { bEnd = true; return; } // end point
    
          for (var idx = 0, sz = node.childNodes.length; idx < sz; idx++) {
            fnWalk(node.childNodes[idx]);
          }
        };
    
        fnWalk(commonAncestor(nodeA, nodeB)); // DFS with commonAcestor.
        return aNode;
      };
    
      /**
       * listing all prevSiblings (until predicate hit).
       * @param {element} node
       * @param {function} [optional] pred - predicate function
       */
      var listPrev = function (node, pred) {
        pred = pred || func.fail;
    
        var aNext = [];
        while (node) {
          aNext.push(node);
          if (pred(node)) { break; }
          node = node.previousSibling;
        }
        return aNext;
      };
    
      /**
       * listing nextSiblings (until predicate hit).
       * @param {element} node
       * @param {function} pred [optional] - predicate function
       */
      var listNext = function (node, pred) {
        pred = pred || func.fail;
    
        var aNext = [];
        while (node) {
          aNext.push(node);
          if (pred(node)) { break; }
          node = node.nextSibling;
        }
        return aNext;
      };
    
      /**
       * insert node after preceding
       * @param {element} node
       * @param {element} preceding - predicate function
       */
      var insertAfter = function (node, preceding) {
        var next = preceding.nextSibling, parent = preceding.parentNode;
        if (next) {
          parent.insertBefore(node, next);
        } else {
          parent.appendChild(node);
        }
        return node;
      };
    
      /**
       * append children
       * @param {element} node
       * @param {collection} aChild
       */
      var appends = function (node, aChild) {
        $.each(aChild, function (idx, child) {
          node.appendChild(child);
        });
        return node;
      };
    
      var isText = makePredByNodeName('#text');
    
      /**
       * returns #text's text size or element's childNodes size
       * @param {element} node
       */
      var length = function (node) {
        if (isText(node)) { return node.nodeValue.length; }
        return node.childNodes.length;
      };
    
      /**
       * returns offset from parent.
       * @param {element} node
       */
      var position = function (node) {
        var offset = 0;
        while ((node = node.previousSibling)) { offset += 1; }
        return offset;
      };
    
      /**
       * return offsetPath(array of offset) from ancestor
       * @param {element} ancestor - ancestor node
       * @param {element} node
       */
      var makeOffsetPath = function (ancestor, node) {
        var aAncestor = list.initial(listAncestor(node, func.eq(ancestor)));
        return $.map(aAncestor, position).reverse();
      };
    
      /**
       * return element from offsetPath(array of offset)
       * @param {element} ancestor - ancestor node
       * @param {array} aOffset - offsetPath
       */
      var fromOffsetPath = function (ancestor, aOffset) {
        var current = ancestor;
        for (var i = 0, sz = aOffset.length; i < sz; i++) {
          current = current.childNodes[aOffset[i]];
        }
        return current;
      };
    
      /**
       * split element or #text
       * @param {element} node
       * @param {number} offset
       */
      var splitData = function (node, offset) {
        if (offset === 0) { return node; }
        if (offset >= length(node)) { return node.nextSibling; }
    
        // splitText
        if (isText(node)) { return node.splitText(offset); }
    
        // splitElement
        var child = node.childNodes[offset];
        node = insertAfter(node.cloneNode(false), node);
        return appends(node, listNext(child));
      };
    
      /**
       * split dom tree by boundaryPoint(pivot and offset)
       * @param {element} root
       * @param {element} pivot - this will be boundaryPoint's node
       * @param {number} offset - this will be boundaryPoint's offset
       */
      var split = function (root, pivot, offset) {
        var aAncestor = listAncestor(pivot, func.eq(root));
        if (aAncestor.length === 1) { return splitData(pivot, offset); }
        return aAncestor.reduce(function (node, parent) {
          var clone = parent.cloneNode(false);
          insertAfter(clone, parent);
          if (node === pivot) {
            node = splitData(node, offset);
          }
          appends(clone, listNext(node));
          return clone;
        });
      };
    
      /**
       * remove node, (bRemoveChild: remove child or not)
       * @param {element} node
       * @param {boolean} bRemoveChild
       */
      var remove = function (node, bRemoveChild) {
        if (!node || !node.parentNode) { return; }
        if (node.removeNode) { return node.removeNode(bRemoveChild); }
    
        var elParent = node.parentNode;
        if (!bRemoveChild) {
          var aNode = [];
          var i, sz;
          for (i = 0, sz = node.childNodes.length; i < sz; i++) {
            aNode.push(node.childNodes[i]);
          }
    
          for (i = 0, sz = aNode.length; i < sz; i++) {
            elParent.insertBefore(aNode[i], node);
          }
        }
    
        elParent.removeChild(node);
      };
    
      var html = function ($node) {
        return dom.isTextarea($node[0]) ? $node.val() : $node.html();
      };
    
      return {
        emptyPara: emptyPara,
        isText: isText,
        isPara: isPara,
        isList: isList,
        isEditable: isEditable,
        isControlSizing: isControlSizing,
        isAnchor: makePredByNodeName('A'),
        isDiv: makePredByNodeName('DIV'),
        isSpan: makePredByNodeName('SPAN'),
        isB: makePredByNodeName('B'),
        isU: makePredByNodeName('U'),
        isS: makePredByNodeName('S'),
        isI: makePredByNodeName('I'),
        isImg: makePredByNodeName('IMG'),
        isTextarea: makePredByNodeName('TEXTAREA'),
        ancestor: ancestor,
        listAncestor: listAncestor,
        listNext: listNext,
        listPrev: listPrev,
        commonAncestor: commonAncestor,
        listBetween: listBetween,
        insertAfter: insertAfter,
        position: position,
        makeOffsetPath: makeOffsetPath,
        fromOffsetPath: fromOffsetPath,
        split: split,
        remove: remove,
        html: html
      };
    })();
  
    /**
     * range module
     */
    var range = (function () {
      var bW3CRangeSupport = !!document.createRange;
    
      // return boundaryPoint from TextRange, inspired by Andy Na's HuskyRange.js
      var textRange2bp = function (textRange, bStart) {
        var elCont = textRange.parentElement(), nOffset;
    
        var tester = document.body.createTextRange(), elPrevCont;
        var aChild = list.from(elCont.childNodes);
        for (nOffset = 0; nOffset < aChild.length; nOffset++) {
          if (dom.isText(aChild[nOffset])) { continue; }
          tester.moveToElementText(aChild[nOffset]);
          if (tester.compareEndPoints('StartToStart', textRange) >= 0) { break; }
          elPrevCont = aChild[nOffset];
        }
    
        if (nOffset !== 0 && dom.isText(aChild[nOffset - 1])) {
          var textRangeStart = document.body.createTextRange(), elCurText = null;
          textRangeStart.moveToElementText(elPrevCont || elCont);
          textRangeStart.collapse(!elPrevCont);
          elCurText = elPrevCont ? elPrevCont.nextSibling : elCont.firstChild;
    
          var pointTester = textRange.duplicate();
          pointTester.setEndPoint('StartToStart', textRangeStart);
          var nTextCount = pointTester.text.replace(/[\r\n]/g, '').length;
    
          while (nTextCount > elCurText.nodeValue.length && elCurText.nextSibling) {
            nTextCount -= elCurText.nodeValue.length;
            elCurText = elCurText.nextSibling;
          }
    
          /* jshint ignore:start */
          var sDummy = elCurText.nodeValue; //enforce IE to re-reference elCurText, hack
          /* jshint ignore:end */
    
          if (bStart && elCurText.nextSibling && dom.isText(elCurText.nextSibling) &&
              nTextCount === elCurText.nodeValue.length) {
            nTextCount -= elCurText.nodeValue.length;
            elCurText = elCurText.nextSibling;
          }
    
          elCont = elCurText;
          nOffset = nTextCount;
        }
    
        return {cont: elCont, offset: nOffset};
      };
    
      // return TextRange from boundary point (inspired by google closure-library)
      var bp2textRange = function (bp) {
        var textRangeInfo = function (elCont, nOffset) {
          var elNode, bCollapseToStart;
    
          if (dom.isText(elCont)) {
            var aPrevText = dom.listPrev(elCont, func.not(dom.isText));
            var elPrevCont = list.last(aPrevText).previousSibling;
            elNode =  elPrevCont || elCont.parentNode;
            nOffset += list.sum(list.tail(aPrevText), dom.length);
            bCollapseToStart = !elPrevCont;
          } else {
            elNode = elCont.childNodes[nOffset] || elCont;
            if (dom.isText(elNode)) {
              return textRangeInfo(elNode, nOffset);
            }
    
            nOffset = 0;
            bCollapseToStart = false;
          }
    
          return {cont: elNode, collapseToStart: bCollapseToStart, offset: nOffset};
        };
    
        var textRange = document.body.createTextRange();
        var info = textRangeInfo(bp.cont, bp.offset);
    
        textRange.moveToElementText(info.cont);
        textRange.collapse(info.collapseToStart);
        textRange.moveStart('character', info.offset);
        return textRange;
      };
    
      // {startContainer, startOffset, endContainer, endOffset}
      var WrappedRange = function (sc, so, ec, eo) {
        this.sc = sc;
        this.so = so;
        this.ec = ec;
        this.eo = eo;
    
        // nativeRange: get nativeRange from sc, so, ec, eo
        var nativeRange = function () {
          if (bW3CRangeSupport) {
            var w3cRange = document.createRange();
            w3cRange.setStart(sc, so);
            w3cRange.setEnd(ec, eo);
            return w3cRange;
          } else {
            var textRange = bp2textRange({cont: sc, offset: so});
            textRange.setEndPoint('EndToEnd', bp2textRange({cont: ec, offset: eo}));
            return textRange;
          }
        };
    
        // select: update visible range
        this.select = function () {
          var nativeRng = nativeRange();
          if (bW3CRangeSupport) {
            var selection = document.getSelection();
            if (selection.rangeCount > 0) { selection.removeAllRanges(); }
            selection.addRange(nativeRng);
          } else {
            nativeRng.select();
          }
        };
    
        // listPara: listing paragraphs on range
        this.listPara = function () {
          var aNode = dom.listBetween(sc, ec);
          var aPara = list.compact($.map(aNode, function (node) {
            return dom.ancestor(node, dom.isPara);
          }));
          return $.map(list.clusterBy(aPara, func.eq2), list.head);
        };
    
        // makeIsOn: return isOn(pred) function
        var makeIsOn = function (pred) {
          return function () {
            var elAncestor = dom.ancestor(sc, pred);
            return elAncestor && (elAncestor === dom.ancestor(ec, pred));
          };
        };
    
        // isOnEditable: judge whether range is on editable or not
        this.isOnEditable = makeIsOn(dom.isEditable);
        // isOnList: judge whether range is on list node or not
        this.isOnList = makeIsOn(dom.isList);
        // isOnAnchor: judge whether range is on anchor node or not
        this.isOnAnchor = makeIsOn(dom.isAnchor);
        // isCollapsed: judge whether range was collapsed
        this.isCollapsed = function () { return sc === ec && so === eo; };
    
        // insertNode
        this.insertNode = function (node) {
          var nativeRng = nativeRange();
          if (bW3CRangeSupport) {
            nativeRng.insertNode(node);
          } else {
            nativeRng.pasteHTML(node.outerHTML); // NOTE: missing node reference.
          }
        };
    
        this.toString = function () {
          var nativeRng = nativeRange();
          return bW3CRangeSupport ? nativeRng.toString() : nativeRng.text;
        };
    
        //bookmark: offsetPath bookmark
        this.bookmark = function (elEditable) {
          return {
            s: { path: dom.makeOffsetPath(elEditable, sc), offset: so },
            e: { path: dom.makeOffsetPath(elEditable, ec), offset: eo }
          };
        };
      };
    
      return { // Range Object
        // create Range Object From arguments or Browser Selection
        create : function (sc, so, ec, eo) {
          if (arguments.length === 0) { // from Browser Selection
            if (bW3CRangeSupport) { // webkit, firefox
              var selection = document.getSelection();
              if (selection.rangeCount === 0) { return null; }
    
              var nativeRng = selection.getRangeAt(0);
              sc = nativeRng.startContainer;
              so = nativeRng.startOffset;
              ec = nativeRng.endContainer;
              eo = nativeRng.endOffset;
            } else { // IE8: TextRange
              var textRange = document.selection.createRange();
              var textRangeEnd = textRange.duplicate();
              textRangeEnd.collapse(false);
              var textRangeStart = textRange;
              textRangeStart.collapse(true);
    
              var bpStart = textRange2bp(textRangeStart, true),
              bpEnd = textRange2bp(textRangeEnd, false);
    
              sc = bpStart.cont;
              so = bpStart.offset;
              ec = bpEnd.cont;
              eo = bpEnd.offset;
            }
          } else if (arguments.length === 2) { //collapsed
            ec = sc;
            eo = so;
          }
          return new WrappedRange(sc, so, ec, eo);
        },
        // createFromBookmark
        createFromBookmark : function (elEditable, bookmark) {
          var sc = dom.fromOffsetPath(elEditable, bookmark.s.path);
          var so = bookmark.s.offset;
          var ec = dom.fromOffsetPath(elEditable, bookmark.e.path);
          var eo = bookmark.e.offset;
          return new WrappedRange(sc, so, ec, eo);
        }
      };
    })();
  
    /**
     * aysnc functions which returns deferred object
     */
    var async = (function () {
      /**
       * readFile
       * @param {file} file - file object
       */
      var readFile = function (file) {
        return $.Deferred(function (deferred) {
          var reader = new FileReader();
          reader.onload = function (e) { deferred.resolve(e.target.result); };
          reader.onerror = function () { deferred.reject(this); };
          reader.readAsDataURL(file);
        }).promise();
      };
    
      /**
       * loadImage from url string
       * @param {string} sUrl
       */
      var loadImage = function (sUrl) {
        return $.Deferred(function (deferred) {
          var image = new Image();
          image.onload = loaded;
          image.onerror = errored; // URL returns 404, etc
          image.onabort = errored; // IE may call this if user clicks "Stop"
          image.src = sUrl;
           
          function loaded() {
            unbindEvents();
            deferred.resolve(image);
          }
          function errored() {
            unbindEvents();
            deferred.reject(image);
          }
          function unbindEvents() {
            image.onload = null;
            image.onerror = null;
            image.onabort = null;
          }
        }).promise();
      };
    
      return { readFile: readFile, loadImage: loadImage };
    })();
  
    /**
     * Style
     */
    var Style = function () {
      // para level style
      this.stylePara = function (rng, oStyle) {
        var aPara = rng.listPara();
        $.each(aPara, function (idx, elPara) {
          $.each(oStyle, function (sKey, sValue) {
            elPara.style[sKey] = sValue;
          });
        });
      };
  
      // get current style, elTarget: target element on event.
      this.current = function (rng, elTarget) {
        var $cont = $(dom.isText(rng.sc) ? rng.sc.parentNode : rng.sc);
        var oStyle = $cont.css(['font-size', 'text-align',
                                  'list-style-type', 'line-height']) || {};
  
        oStyle['font-size'] = parseInt(oStyle['font-size']);
  
        // document.queryCommandState for toggle state
        oStyle['font-bold'] = document.queryCommandState('bold') ? 'bold' : 'normal';
        oStyle['font-italic'] = document.queryCommandState('italic') ? 'italic' : 'normal';
        oStyle['font-underline'] = document.queryCommandState('underline') ? 'underline' : 'normal';
  
        // list-style-type to list-style(unordered, ordered)
        if (!rng.isOnList()) {
          oStyle['list-style'] = 'none';
        } else {
          var aOrderedType = ['circle', 'disc', 'disc-leading-zero', 'square'];
          var bUnordered = $.inArray(oStyle['list-style-type'], aOrderedType) > -1;
          oStyle['list-style'] = bUnordered ? 'unordered' : 'ordered';
        }
  
        var elPara = dom.ancestor(rng.sc, dom.isPara);
        if (elPara && elPara.style['line-height']) {
          oStyle['line-height'] = elPara.style.lineHeight;
        } else {
          var lineHeight = parseInt(oStyle['line-height']) / parseInt(oStyle['font-size']);
          oStyle['line-height'] = lineHeight.toFixed(1);
        }
  
        oStyle.image = dom.isImg(elTarget) && elTarget;
        oStyle.anchor = rng.isOnAnchor() && dom.ancestor(rng.sc, dom.isAnchor);
        oStyle.aAncestor = dom.listAncestor(rng.sc, dom.isEditable);
  
        return oStyle;
      };
    };
  
    /**
     * History
     */
    var History = function () {
      var aUndo = [], aRedo = [];
  
      var makeSnap = function ($editable) {
        var elEditable = $editable[0], rng = range.create();
        return {
          contents: $editable.html(),
          bookmark: rng.bookmark(elEditable),
          scrollTop: $editable.scrollTop()
        };
      };
  
      var applySnap = function ($editable, oSnap) {
        $editable.html(oSnap.contents).scrollTop(oSnap.scrollTop);
        range.createFromBookmark($editable[0], oSnap.bookmark).select();
      };
  
      this.undo = function ($editable) {
        var oSnap = makeSnap($editable);
        if (aUndo.length === 0) { return; }
        applySnap($editable, aUndo.pop());
        aRedo.push(oSnap);
      };
  
      this.redo = function ($editable) {
        var oSnap = makeSnap($editable);
        if (aRedo.length === 0) { return; }
        applySnap($editable, aRedo.pop());
        aUndo.push(oSnap);
      };
  
      this.recordUndo = function ($editable) {
        aRedo = [];
        aUndo.push(makeSnap($editable));
      };
    };
  
    /**
     * Editor
     */
    var Editor = function () {
      // save current range
      this.saveRange = function ($editable) {
        $editable.data('range', range.create());
      };
  
      // restore lately range
      this.restoreRange = function ($editable) {
        var rng = $editable.data('range');
        if (rng) { rng.select(); }
      };
  
      //currentStyle
      var style = new Style();
      this.currentStyle = function (elTarget) {
        var rng = range.create();
        return rng.isOnEditable() && style.current(rng, elTarget);
      };
  
      this.tab = function ($editable) {
        recordUndo($editable);
        var rng = range.create();
        var sNbsp = new Array($editable.data('tabsize') + 1).join('&nbsp;');
        rng.insertNode($('<span id="noteTab">' + sNbsp + '</span>')[0]);
        var $tab = $('#noteTab').removeAttr('id');
        rng = range.create($tab[0], 1);
        rng.select();
        dom.remove($tab[0]);
      };
  
      // undo
      this.undo = function ($editable) {
        $editable.data('NoteHistory').undo($editable);
      };
  
      // redo
      this.redo = function ($editable) {
        $editable.data('NoteHistory').redo($editable);
      };
  
      // recordUndo
      var recordUndo = this.recordUndo = function ($editable) {
        $editable.data('NoteHistory').recordUndo($editable);
      };
  
      /* jshint ignore:start */
      // native commands(with execCommand), generate function for execCommand
      var aCmd = ['bold', 'italic', 'underline', 'strikethrough',
                  'justifyLeft', 'justifyCenter', 'justifyRight', 'justifyFull',
                  'insertOrderedList', 'insertUnorderedList',
                  'indent', 'outdent', 'formatBlock', 'removeFormat',
                  'backColor', 'foreColor', 'insertHorizontalRule'];
  
      for (var idx = 0, len = aCmd.length; idx < len; idx ++) {
        this[aCmd[idx]] = (function (sCmd) {
          return function ($editable, sValue) {
            recordUndo($editable);
            document.execCommand(sCmd, false, sValue);
          };
        })(aCmd[idx]);
      }
      /* jshint ignore:end */
  
      this.insertImage = function ($editable, sUrl) {
        async.loadImage(sUrl).done(function (image) {
          recordUndo($editable);
          var $image = $('<img>').attr('src', sUrl);
          $image.css('width', Math.min($editable.width(), image.width));
          range.create().insertNode($image[0]);
        }).fail(function () {
          var callbacks = $editable.data('callbacks');
          if (callbacks.onImageUploadError) {
            callbacks.onImageUploadError();
          }
        });
      };
  
      this.insertVideo = function ($editable, sUrl) {
        // video url patterns(youtube, instagram, vimeo, dailymotion)
        var ytRegExp = /^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/;
        var ytMatch = sUrl.match(ytRegExp);
  
        var igRegExp = /\/\/instagram.com\/p\/(.[a-zA-Z0-9]*)/;
        var igMatch = sUrl.match(igRegExp);
  
        var vRegExp = /\/\/vine.co\/v\/(.[a-zA-Z0-9]*)/;
        var vMatch = sUrl.match(vRegExp);
  
        var vimRegExp = /\/\/(player.)?vimeo.com\/([a-z]*\/)*([0-9]{6,11})[?]?.*/;
        var vimMatch = sUrl.match(vimRegExp);
  
        var dmRegExp = /.+dailymotion.com\/(video|hub)\/([^_]+)[^#]*(#video=([^_&]+))?/;
        var dmMatch = sUrl.match(dmRegExp);
  
        var $video;
        if (ytMatch && ytMatch[2].length === 11) {
          var youtubeId = ytMatch[2];
          $video = $('<iframe>')
            .attr('src', 'http://www.youtube.com/embed/' + youtubeId)
            .attr('width', '640').attr('height', '360');
        } else if (igMatch && igMatch[0].length > 0) {
          $video = $('<iframe>')
            .attr('src', igMatch[0] + '/embed/')
            .attr('width', '612').attr('height', '710')
            .attr('scrolling', 'no')
            .attr('allowtransparency', 'true');
        } else if (vMatch && vMatch[0].length > 0) {
          $video = $('<iframe>')
            .attr('src', vMatch[0] + '/embed/simple')
            .attr('width', '600').attr('height', '600')
            .attr('class', 'vine-embed');
        } else if (vimMatch && vimMatch[3].length > 0) {
          $video = $('<iframe webkitallowfullscreen mozallowfullscreen allowfullscreen>')
            .attr('src', '//player.vimeo.com/video/' + vimMatch[3])
            .attr('width', '640').attr('height', '360');
        } else if (dmMatch && dmMatch[2].length > 0) {
          $video = $('<iframe>')
            .attr('src', 'http://www.dailymotion.com/embed/video/' + dmMatch[2])
            .attr('width', '640').attr('height', '360');
        } else {
          // this is not a known video link. Now what, Cat? Now what?
        }
  
        if ($video) {
          $video.attr('frameborder', 0);
          range.create().insertNode($video[0]);
        }
      };
  
      this.formatBlock = function ($editable, sValue) {
        recordUndo($editable);
        sValue = agent.bMSIE ? '<' + sValue + '>' : sValue;
        document.execCommand('FormatBlock', false, sValue);
      };
  
      this.fontSize = function ($editable, sValue) {
        recordUndo($editable);
        document.execCommand('fontSize', false, 3);
        if (agent.bFF) {
          // firefox: <font size="3"> to <span style='font-size={sValue}px;'>, buggy
          $editable.find('font[size=3]').removeAttr('size').css('font-size', sValue + 'px');
        } else {
          // chrome: <span style="font-size: medium"> to <span style='font-size={sValue}px;'>
          $editable.find('span').filter(function () {
            return this.style.fontSize === 'medium';
          }).css('font-size', sValue + 'px');
        }
      };
  
      this.lineHeight = function ($editable, sValue) {
        recordUndo($editable);
        style.stylePara(range.create(), {lineHeight: sValue});
      };
  
      this.unlink = function ($editable) {
        var rng = range.create();
        if (rng.isOnAnchor()) {
          recordUndo($editable);
          var elAnchor = dom.ancestor(rng.sc, dom.isAnchor);
          rng = range.create(elAnchor, 0, elAnchor, 1);
          rng.select();
          document.execCommand('unlink');
        }
      };
  
      this.setLinkDialog = function ($editable, fnShowDialog) {
        var rng = range.create();
        if (rng.isOnAnchor()) {
          var elAnchor = dom.ancestor(rng.sc, dom.isAnchor);
          rng = range.create(elAnchor, 0, elAnchor, 1);
        }
        fnShowDialog({
          range: rng,
          text: rng.toString(),
          url: rng.isOnAnchor() ? dom.ancestor(rng.sc, dom.isAnchor).href : ''
        }, function (sLinkUrl) {
          rng.select();
          recordUndo($editable);
  
          var sLinkUrlWithProtocol;
          if (sLinkUrl.indexOf('@') !== -1) { // email address
            sLinkUrlWithProtocol = sLinkUrl.indexOf(':') !== -1 ? sLinkUrl : 'mailto:' + sLinkUrl;
          } else { // normal address
            sLinkUrlWithProtocol = sLinkUrl.indexOf('://') !== -1 ? sLinkUrl : 'http://' + sLinkUrl;
          }
  
          //IE: createLink when range collapsed.
          if (agent.bMSIE && rng.isCollapsed()) {
            rng.insertNode($('<A id="linkAnchor">' + sLinkUrl + '</A>')[0]);
            var $anchor = $('#linkAnchor').removeAttr('id')
                                            .attr('href', sLinkUrlWithProtocol);
            rng = range.create($anchor[0], 0, $anchor[0], 1);
            rng.select();
          } else {
            document.execCommand('createlink', false, sLinkUrlWithProtocol);
          }
        });
      };
  
      this.setVideoDialog = function ($editable, fnShowDialog) {
        var rng = range.create();
        var editor = this;
  
        if (rng.isOnAnchor()) {
          var elAnchor = dom.ancestor(rng.sc, dom.isAnchor);
          rng = range.create(elAnchor, 0, elAnchor, 1);
        }
  
        fnShowDialog({
          range: rng,
          text: rng.toString()
        }, function (sLinkUrl) {
          rng.select();
          recordUndo($editable);
          editor.insertVideo($editable, sLinkUrl);
        });
      };
  
      this.color = function ($editable, sObjColor) {
        var oColor = JSON.parse(sObjColor);
        var foreColor = oColor.foreColor, backColor = oColor.backColor;
  
        recordUndo($editable);
        if (foreColor) { document.execCommand('foreColor', false, foreColor); }
        if (backColor) { document.execCommand('backColor', false, backColor); }
      };
  
      this.insertTable = function ($editable, sDim) {
        recordUndo($editable);
        var aDim = sDim.split('x');
        var nCol = aDim[0], nRow = aDim[1];
  
        var aTD = [], sTD;
        var sWhitespace = agent.bMSIE ? '&nbsp;' : '<br/>';
        for (var idxCol = 0; idxCol < nCol; idxCol++) {
          aTD.push('<td>' + sWhitespace + '</td>');
        }
        sTD = aTD.join('');
  
        var aTR = [], sTR;
        for (var idxRow = 0; idxRow < nRow; idxRow++) {
          aTR.push('<tr>' + sTD + '</tr>');
        }
        sTR = aTR.join('');
        var sTable = '<table class="table table-bordered">' + sTR + '</table>';
        range.create().insertNode($(sTable)[0]);
      };
  
      this.floatMe = function ($editable, sValue, elTarget) {
        recordUndo($editable);
        elTarget.style.cssFloat = sValue;
      };
  
      this.resize = function ($editable, sValue, elTarget) {
        recordUndo($editable);
        elTarget.style.width = $editable.width() * sValue + 'px';
        elTarget.style.height = '';
      };
  
      this.resizeTo = function (pos, $target) {
        var newRatio = pos.y / pos.x;
        var ratio = $target.data('ratio');
  
        $target.css({
          width: ratio > newRatio ? pos.x : pos.y / ratio,
          height: ratio > newRatio ? pos.x * ratio : pos.y
        });
      };
    };
  
    /**
     * Toolbar
     */
    var Toolbar = function () {
      this.update = function ($toolbar, oStyle) {
        //handle selectbox for fontsize, lineHeight
        var checkDropdownMenu = function ($btn, nValue) {
          $btn.find('.dropdown-menu li a').each(function () {
            var bChecked = parseFloat($(this).data('value')) === nValue;
            this.className = bChecked ? 'checked' : '';
          });
        };
  
        var $fontsize = $toolbar.find('.note-fontsize');
        $fontsize.find('.note-current-fontsize').html(oStyle['font-size']);
        checkDropdownMenu($fontsize, parseFloat(oStyle['font-size']));
  
        var $lineHeight = $toolbar.find('.note-height');
        checkDropdownMenu($lineHeight, parseFloat(oStyle['line-height']));
  
        //check button state
        var btnState = function (sSelector, pred) {
          var $btn = $toolbar.find(sSelector);
          $btn[pred() ? 'addClass' : 'removeClass']('active');
        };
  
        btnState('button[data-event="bold"]', function () {
          return oStyle['font-bold'] === 'bold';
        });
        btnState('button[data-event="italic"]', function () {
          return oStyle['font-italic'] === 'italic';
        });
        btnState('button[data-event="underline"]', function () {
          return oStyle['font-underline'] === 'underline';
        });
        btnState('button[data-event="justifyLeft"]', function () {
          return oStyle['text-align'] === 'left' || oStyle['text-align'] === 'start';
        });
        btnState('button[data-event="justifyCenter"]', function () {
          return oStyle['text-align'] === 'center';
        });
        btnState('button[data-event="justifyRight"]', function () {
          return oStyle['text-align'] === 'right';
        });
        btnState('button[data-event="justifyFull"]', function () {
          return oStyle['text-align'] === 'justify';
        });
        btnState('button[data-event="insertUnorderedList"]', function () {
          return oStyle['list-style'] === 'unordered';
        });
        btnState('button[data-event="insertOrderedList"]', function () {
          return oStyle['list-style'] === 'ordered';
        });
      };
  
      this.updateRecentColor = function (elBtn, sEvent, sValue) {
        var $color = $(elBtn).closest('.note-color');
        var $recentColor = $color.find('.note-recent-color');
        var oColor = JSON.parse($recentColor.attr('data-value'));
        oColor[sEvent] = sValue;
        $recentColor.attr('data-value', JSON.stringify(oColor));
        var sKey = sEvent === 'backColor' ? 'background-color' : 'color';
        $recentColor.find('i').css(sKey, sValue);
      };
  
      this.updateFullscreen = function ($toolbar, bFullscreen) {
        var $btn = $toolbar.find('button[data-event="fullscreen"]');
        $btn[bFullscreen ? 'addClass' : 'removeClass']('active');
      };
      this.updateCodeview = function ($toolbar, bCodeview) {
        var $btn = $toolbar.find('button[data-event="codeview"]');
        $btn[bCodeview ? 'addClass' : 'removeClass']('active');
      };
  
      this.enable = function ($toolbar) {
        $toolbar.find('button').not('button[data-event="codeview"]').removeClass('disabled');
      };
  
      this.disable = function ($toolbar) {
        $toolbar.find('button').not('button[data-event="codeview"]').addClass('disabled');
      };
    };
  
    /**
     * Popover (http://getbootstrap.com/javascript/#popovers)
     */
    var Popover = function () {
      var showPopover = function ($popover, elPlaceholder) {
        var $placeholder = $(elPlaceholder);
        var pos = $placeholder.position(), height = $placeholder.height();
        $popover.css({
          display: 'block',
          left: pos.left,
          top: pos.top + height
        });
      };
  
      this.update = function ($popover, oStyle) {
        var $linkPopover = $popover.find('.note-link-popover'),
            $imagePopover = $popover.find('.note-image-popover');
        if (oStyle.anchor) {
          var $anchor = $linkPopover.find('a');
          $anchor.attr('href', oStyle.anchor.href).html(oStyle.anchor.href);
          showPopover($linkPopover, oStyle.anchor);
        } else {
          $linkPopover.hide();
        }
  
        if (oStyle.image) {
          showPopover($imagePopover, oStyle.image);
        } else {
          $imagePopover.hide();
        }
      };
  
      this.hide = function ($popover) {
        $popover.children().hide();
      };
    };
  
    /**
     * Handle
     */
    var Handle = function () {
      this.update = function ($handle, oStyle) {
        var $selection = $handle.find('.note-control-selection');
        if (oStyle.image) {
          var $image = $(oStyle.image);
          var pos = $image.position();
          var szImage = {w: $image.width(), h: $image.height()};
          $selection.css({
            display: 'block',
            left: pos.left,
            top: pos.top,
            width: szImage.w,
            height: szImage.h
          }).data('target', oStyle.image); // save current image element.
          var sSizing = szImage.w + 'x' + szImage.h;
          $selection.find('.note-control-selection-info').text(sSizing);
        } else {
          $selection.hide();
        }
      };
  
      this.hide = function ($handle) {
        $handle.children().hide();
      };
    };
  
    /**
     * Dialog
     */
    var Dialog = function () {
      this.showImageDialog = function ($dialog, hDropImage, fnInsertImages, fnInsertImage) {
        var $imageDialog = $dialog.find('.note-image-dialog');
        var $imageInput = $dialog.find('.note-image-input'),
            $imageUrl = $dialog.find('.note-image-url'),
            $imageBtn = $dialog.find('.note-image-btn');
  
        $imageDialog.on('shown.bs.modal', function () {
          $imageInput.on('change', function () {
            fnInsertImages(this.files);
            $(this).val('');
            $imageDialog.modal('hide');
          });
          $imageUrl.val('').keyup(function () {
            if ($imageUrl.val()) {
              $imageBtn.removeClass('disabled').attr('disabled', false);
            } else {
              $imageBtn.addClass('disabled').attr('disabled', true);
            }
          }).trigger('focus');
          $imageBtn.click(function (event) {
            $imageDialog.modal('hide');
            fnInsertImage($imageUrl.val());
            event.preventDefault();
          });
        }).on('hidden.bs.modal', function () {
          $imageInput.off('change');
          $imageDialog.off('shown.bs.modal hidden.bs.modal');
          $imageUrl.off('keyup');
          $imageBtn.off('click');
        }).modal('show');
      };
  
      this.showVideoDialog = function ($dialog, videoInfo, callback) {
        var $videoDialog = $dialog.find('.note-video-dialog');
        var $videoUrl = $videoDialog.find('.note-video-url'),
            $videoBtn = $videoDialog.find('.note-video-btn');
  
        $videoDialog.on('show.bs.modal', function () {
          $videoUrl.val(videoInfo.text).keyup(function () {
            if ($videoUrl.val()) {
              $videoBtn.removeClass('disabled').attr('disabled', false);
            } else {
              $videoBtn.addClass('disabled').attr('disabled', true);
            }
          }).trigger('keyup').trigger('focus');
  
          $videoBtn.click(function (event) {
            $videoDialog.modal('hide');
            callback($videoUrl.val());
            event.preventDefault();
          });
  
        }).on('hidden.bs.modal', function () {
          $videoUrl.off('keyup');
          $videoBtn.off('click');
          $videoDialog.off('show.bs.modal hidden.bs.modal');
        }).modal('show');
      };
  
  
      this.showLinkDialog = function ($dialog, linkInfo, callback) {
        var $linkDialog = $dialog.find('.note-link-dialog');
        var $linkText = $linkDialog.find('.note-link-text'),
            $linkUrl = $linkDialog.find('.note-link-url'),
            $linkBtn = $linkDialog.find('.note-link-btn');
  
        $linkDialog.on('shown.bs.modal', function () {
          $linkText.html(linkInfo.text);
          $linkUrl.val(linkInfo.url).keyup(function () {
            if ($linkUrl.val()) {
              $linkBtn.removeClass('disabled').attr('disabled', false);
            } else {
              $linkBtn.addClass('disabled').attr('disabled', true);
            }
  
            if (!linkInfo.text) { $linkText.html($linkUrl.val()); }
          }).trigger('focus');
          $linkBtn.click(function (event) {
            $linkDialog.modal('hide'); //hide and createLink (ie9+)
            callback($linkUrl.val());
            event.preventDefault();
          });
        }).on('hidden.bs.modal', function () {
          $linkUrl.off('keyup');
          $linkBtn.off('click');
          $linkDialog.off('shown.bs.modal hidden.bs.modal');
        }).modal('show');
      };
  
      this.showHelpDialog = function ($dialog) {
        $dialog.find('.note-help-dialog').modal('show');
      };
    };
  
    /**
     * EventHandler
     *
     * handle mouse & key event on note
     */
    var EventHandler = function () {
      var editor = new Editor();
      var toolbar = new Toolbar(), popover = new Popover();
      var handle = new Handle(), dialog = new Dialog();
  
      var key = { BACKSPACE: 8, TAB: 9, ENTER: 13, SPACE: 32,
                  NUM0: 48, NUM1: 49, NUM6: 54, NUM7: 55, NUM8: 56,
                  B: 66, E: 69, I: 73, J: 74, K: 75, L: 76, R: 82, S: 83, U: 85,
                  Y: 89, Z: 90, SLASH: 191,
                  LEFTBRACKET: 219, BACKSLACH: 220, RIGHTBRACKET: 221 };
  
      // makeLayoutInfo from editor's descendant node.
      var makeLayoutInfo = function (descendant) {
        var $editor = $(descendant).closest('.note-editor');
        return {
          editor: function () { return $editor; },
          toolbar: function () { return $editor.find('.note-toolbar'); },
          editable: function () { return $editor.find('.note-editable'); },
          codable: function () { return $editor.find('.note-codable'); },
          statusbar: function () { return $editor.find('.note-statusbar'); },
          popover: function () { return $editor.find('.note-popover'); },
          handle: function () { return $editor.find('.note-handle'); },
          dialog: function () { return $editor.find('.note-dialog'); }
        };
      };
  
      var hKeydown = function (event) {
        var bCmd = agent.bMac ? event.metaKey : event.ctrlKey,
            bShift = event.shiftKey, keyCode = event.keyCode;
  
        // optimize
        var bExecCmd = (bCmd || bShift || keyCode === key.TAB);
        var oLayoutInfo = (bExecCmd) ? makeLayoutInfo(event.target) : null;
  
        if (keyCode === key.TAB && oLayoutInfo.editable().data('tabsize')) {
          editor.tab(oLayoutInfo.editable());
        } else if (bCmd && ((bShift && keyCode === key.Z) || keyCode === key.Y)) {
          editor.redo(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.Z) {
          editor.undo(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.B) {
          editor.bold(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.I) {
          editor.italic(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.U) {
          editor.underline(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.S) {
          editor.strikethrough(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.BACKSLACH) {
          editor.removeFormat(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.K) {
          oLayoutInfo.editable();
          editor.setLinkDialog(oLayoutInfo.editable(), function (linkInfo, cb) {
            dialog.showLinkDialog(oLayoutInfo.dialog(), linkInfo, cb);
          });
        } else if (bCmd && keyCode === key.SLASH) {
          dialog.showHelpDialog(oLayoutInfo.dialog());
        } else if (bCmd && bShift && keyCode === key.L) {
          editor.justifyLeft(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.E) {
          editor.justifyCenter(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.R) {
          editor.justifyRight(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.J) {
          editor.justifyFull(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.NUM7) {
          editor.insertUnorderedList(oLayoutInfo.editable());
        } else if (bCmd && bShift && keyCode === key.NUM8) {
          editor.insertOrderedList(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.LEFTBRACKET) {
          editor.outdent(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.RIGHTBRACKET) {
          editor.indent(oLayoutInfo.editable());
        } else if (bCmd && keyCode === key.NUM0) { // formatBlock Paragraph
          editor.formatBlock(oLayoutInfo.editable(), 'P');
        } else if (bCmd && (key.NUM1 <= keyCode && keyCode <= key.NUM6)) {
          var sHeading = 'H' + String.fromCharCode(keyCode); // H1~H6
          editor.formatBlock(oLayoutInfo.editable(), sHeading);
        } else if (bCmd && keyCode === key.ENTER) {
          editor.insertHorizontalRule(oLayoutInfo.editable());
        } else {
          if (keyCode === key.BACKSPACE || keyCode === key.ENTER ||
              keyCode === key.SPACE) {
            editor.recordUndo(makeLayoutInfo(event.target).editable());
          }
          return; // not matched
        }
        event.preventDefault(); //prevent default event for FF
      };
  
      var insertImages = function ($editable, files) {
        var callbacks = $editable.data('callbacks');
        editor.restoreRange($editable);
        if (callbacks.onImageUpload) { // call custom handler
          callbacks.onImageUpload(files, editor, $editable);
        } else {
          $.each(files, function (idx, file) {
            async.readFile(file).done(function (sURL) {
              editor.insertImage($editable, sURL);
            }).fail(function () {
              if (callbacks.onImageUploadError) {
                callbacks.onImageUploadError();
              }
            });
          });
        }
      };
  
      var hDropImage = function (event) {
        var dataTransfer = event.originalEvent.dataTransfer;
        if (dataTransfer && dataTransfer.files) {
          var oLayoutInfo = makeLayoutInfo(event.currentTarget || event.target);
          oLayoutInfo.editable().focus();
          insertImages(oLayoutInfo.editable(), dataTransfer.files);
        }
        event.stopPropagation();
        event.preventDefault();
      };
  
      var hMousedown = function (event) {
        //preventDefault Selection for FF, IE8+
        if (dom.isImg(event.target)) { event.preventDefault(); }
      };
  
      var hToolbarAndPopoverUpdate = function (event) {
        var oLayoutInfo = makeLayoutInfo(event.currentTarget || event.target);
        var oStyle = editor.currentStyle(event.target);
        if (!oStyle) { return; }
        toolbar.update(oLayoutInfo.toolbar(), oStyle);
        popover.update(oLayoutInfo.popover(), oStyle);
        handle.update(oLayoutInfo.handle(), oStyle);
      };
  
      var hScroll = function (event) {
        var oLayoutInfo = makeLayoutInfo(event.currentTarget || event.target);
        //hide popover and handle when scrolled
        popover.hide(oLayoutInfo.popover());
        handle.hide(oLayoutInfo.handle());
      };
  
      var hHandleMousedown = function (event) {
        if (dom.isControlSizing(event.target)) {
          var oLayoutInfo = makeLayoutInfo(event.target),
              $handle = oLayoutInfo.handle(), $popover = oLayoutInfo.popover(),
              $editable = oLayoutInfo.editable(), $editor = oLayoutInfo.editor();
  
          var elTarget = $handle.find('.note-control-selection').data('target'),
              $target = $(elTarget);
          var posStart = $target.offset(),
              scrollTop = $(document).scrollTop(), posDistance;
  
          $editor.on('mousemove', function (event) {
            posDistance = {x: event.clientX - posStart.left,
                           y: event.clientY - (posStart.top - scrollTop)};
            editor.resizeTo(posDistance, $target);
            handle.update($handle, {image: elTarget});
            popover.update($popover, {image: elTarget});
          }).on('mouseup', function () {
            $editor.off('mousemove').off('mouseup');
          });
  
          if (!$target.data('ratio')) { // original ratio.
            $target.data('ratio', $target.height() / $target.width());
          }
  
          editor.recordUndo($editable);
          event.stopPropagation();
          event.preventDefault();
        }
      };
  
      var hToolbarAndPopoverMousedown = function (event) {
        // prevent default event when insertTable (FF, Webkit)
        var $btn = $(event.target).closest('[data-event]');
        if ($btn.length > 0) { event.preventDefault(); }
      };
  
      var hToolbarAndPopoverClick = function (event) {
        var $btn = $(event.target).closest('[data-event]');
  
        if ($btn.length > 0) {
          var sEvent = $btn.attr('data-event'),
              sValue = $btn.attr('data-value');
  
          var oLayoutInfo = makeLayoutInfo(event.target);
          var $editor = oLayoutInfo.editor(),
              $toolbar = oLayoutInfo.toolbar(),
              $dialog = oLayoutInfo.dialog(),
              $editable = oLayoutInfo.editable(),
              $codable = oLayoutInfo.codable();
  
          // before command
          var elTarget;
          if ($.inArray(sEvent, ['resize', 'floatMe']) !== -1) {
            var $handle = oLayoutInfo.handle();
            var $selection = $handle.find('.note-control-selection');
            elTarget = $selection.data('target');
          }
  
          if (editor[sEvent]) { // on command
            $editable.trigger('focus');
            editor[sEvent]($editable, sValue, elTarget);
          }
  
          // after command
          if ($.inArray(sEvent, ['backColor', 'foreColor']) !== -1) {
            toolbar.updateRecentColor($btn[0], sEvent, sValue);
          } else if (sEvent === 'showLinkDialog') { // popover to dialog
            $editable.focus();
            editor.setLinkDialog($editable, function (linkInfo, cb) {
              dialog.showLinkDialog($dialog, linkInfo, cb);
            });
          } else if (sEvent === 'showImageDialog') {
            $editable.focus();
            dialog.showImageDialog($dialog, hDropImage, function (files) {
              insertImages($editable, files);
            }, function (sUrl) {
              editor.restoreRange($editable);
              editor.insertImage($editable, sUrl);
            });
          } else if (sEvent === 'showVideoDialog') {
            $editable.focus();
            editor.setVideoDialog($editable, function (linkInfo, cb) {
              dialog.showVideoDialog($dialog, linkInfo, cb);
            });
          } else if (sEvent === 'showHelpDialog') {
            dialog.showHelpDialog($dialog);
          } else if (sEvent === 'fullscreen') {
            $editor.toggleClass('fullscreen');
  
            var hResizeFullscreen = function () {
              var nHeight = $(window).height() - $toolbar.outerHeight();
              $editable.css('height', nHeight);
            };
  
            var bFullscreen = $editor.hasClass('fullscreen');
            if (bFullscreen) {
              $editable.data('orgHeight', $editable.css('height'));
              $(window).resize(hResizeFullscreen).trigger('resize');
            } else {
              var hasOptionHeight = !!$editable.data('optionHeight');
              $editable.css('height', hasOptionHeight ? $editable.data('orgHeight') : 'auto');
              $(window).off('resize');
            }
  
            toolbar.updateFullscreen($toolbar, bFullscreen);
          } else if (sEvent === 'codeview') {
            $editor.toggleClass('codeview');
  
            var bCodeview = $editor.hasClass('codeview');
            if (bCodeview) {
              $codable.val($editable.html());
              $codable.height($editable.height());
              toolbar.disable($toolbar);
              $codable.focus();
  
              // activate CodeMirror as codable
              if (agent.bCodeMirror) {
                var cmEditor = CodeMirror.fromTextArea($codable[0], $.extend({
                  mode: 'text/html',
                  lineNumbers: true
                }, $editor.data('options').codemirror));
                // CodeMirror hasn't Padding.
                cmEditor.setSize(null, $editable.outerHeight());
                // autoFormatRange If formatting included
                if (cmEditor.autoFormatRange) {
                  cmEditor.autoFormatRange({line: 0, ch: 0}, {
                    line: cmEditor.lineCount(),
                    ch: cmEditor.getTextArea().value.length
                  });
                }
                $codable.data('cmEditor', cmEditor);
              }
            } else {
              // deactivate CodeMirror as codable
              if (agent.bCodeMirror) {
                $codable.data('cmEditor').toTextArea();
              }
  
              $editable.html($codable.val() || dom.emptyPara);
              $editable.height($editable.data('optionHeight') ? $codable.height() : 'auto');
  
              toolbar.enable($toolbar);
              $editable.focus();
            }
  
            toolbar.updateCodeview(oLayoutInfo.toolbar(), bCodeview);
          }
  
          hToolbarAndPopoverUpdate(event);
        }
      };
  
      var EDITABLE_PADDING = 24;
      var hStatusbarMousedown = function (event) {
        var $document = $(document);
        var oLayoutInfo = makeLayoutInfo(event.target);
        var $editable = oLayoutInfo.editable();
  
        var nEditableTop = $editable.offset().top - $document.scrollTop();
        var hMousemove = function (event) {
          $editable.height(event.clientY - (nEditableTop + EDITABLE_PADDING));
        };
        var hMouseup = function () {
          $document.unbind('mousemove', hMousemove)
                     .unbind('mouseup', hMouseup);
        };
        $document.mousemove(hMousemove).mouseup(hMouseup);
        event.stopPropagation();
        event.preventDefault();
      };
  
      var PX_PER_EM = 18;
      var hDimensionPickerMove = function (event) {
        var $picker = $(event.target.parentNode); // target is mousecatcher
        var $dimensionDisplay = $picker.next();
        var $catcher = $picker.find('.note-dimension-picker-mousecatcher');
        var $highlighted = $picker.find('.note-dimension-picker-highlighted');
        var $unhighlighted = $picker.find('.note-dimension-picker-unhighlighted');
        var posOffset;
        if (event.offsetX === undefined) {
          // HTML5 with jQuery - e.offsetX is undefined in Firefox
          var posCatcher = $(event.target).offset();
          posOffset = {x: event.pageX - posCatcher.left,
                       y: event.pageY - posCatcher.top};
        } else {
          posOffset = {x: event.offsetX, y: event.offsetY};
        }
  
        var dim = {c: Math.ceil(posOffset.x / PX_PER_EM) || 1,
                   r: Math.ceil(posOffset.y / PX_PER_EM) || 1};
  
        $highlighted.css({ width: dim.c + 'em', height: dim.r + 'em' });
        $catcher.attr('data-value', dim.c + 'x' + dim.r);
  
        if (3 < dim.c && dim.c < 10) { // 5~10
          $unhighlighted.css({ width: dim.c + 1 + 'em'});
        }
  
        if (3 < dim.r && dim.r < 10) { // 5~10
          $unhighlighted.css({ height: dim.r + 1 + 'em'});
        }
  
        $dimensionDisplay.html(dim.c + ' x ' + dim.r);
      };
  
      /**
       * attach Drag and Drop Events
       * @param oLayoutInfo {object} - layout Informations
       */
      var attachDragAndDropEvent = function (oLayoutInfo) {
        var collection = $(), $dropzone = oLayoutInfo.dropzone,
            $dropzoneMessage = oLayoutInfo.dropzone.find('.note-dropzone-message');
  
        // show dropzone(overlay) on dragenter when dragging a object to document.
        $(document).on('dragenter', function (e) {
          var bCodeview = oLayoutInfo.editor.hasClass('codeview');
          if (!bCodeview && collection.length === 0) {
            oLayoutInfo.editor.addClass('dragover');
            $dropzone.width(oLayoutInfo.editor.width());
            $dropzone.height(oLayoutInfo.editor.height());
            $dropzoneMessage.text('Drag Image Here');
          }
          collection = collection.add(e.target);
        }).on('dragleave', function (e) {
          collection = collection.not(e.target);
          if (collection.length === 0) {
            oLayoutInfo.editor.removeClass('dragover');
          }
        });
  
        // dropzone change message on hover.
        $dropzone.on('dragenter', function () {
          $dropzone.addClass('hover');
          $dropzoneMessage.text('Drop Image');
        }).on('dragleave', function () {
          $dropzone.removeClass('hover');
          $dropzoneMessage.text('Drag Image Here');
        });
  
        // attach drop event
        $dropzone.on('drop', function (e) {
          hDropImage(e);
          collection = $();
          oLayoutInfo.editor.removeClass('dragover');
        }).on('dragover', false); // prevent default dragover event
      };
  
      /**
       * Attach eventhandler
       * @param {object} oLayoutInfo - layout Informations
       * @param {object} options - user options include custom event handlers
       * @param {function} options.enter - enter key handler
       */
      this.attach = function (oLayoutInfo, options) {
        oLayoutInfo.editable.on('keydown', hKeydown);
        oLayoutInfo.editable.on('mousedown', hMousedown);
        oLayoutInfo.editable.on('keyup mouseup', hToolbarAndPopoverUpdate);
        oLayoutInfo.editable.on('scroll', hScroll);
  
        attachDragAndDropEvent(oLayoutInfo);
  
        oLayoutInfo.handle.on('mousedown', hHandleMousedown);
        oLayoutInfo.toolbar.on('click', hToolbarAndPopoverClick);
        oLayoutInfo.popover.on('click', hToolbarAndPopoverClick);
        oLayoutInfo.toolbar.on('mousedown', hToolbarAndPopoverMousedown);
        oLayoutInfo.popover.on('mousedown', hToolbarAndPopoverMousedown);
        oLayoutInfo.statusbar.on('mousedown', hStatusbarMousedown);
  
        //toolbar table dimension
        var $toolbar = oLayoutInfo.toolbar;
        var $catcher = $toolbar.find('.note-dimension-picker-mousecatcher');
        $catcher.on('mousemove', hDimensionPickerMove);
  
        // save selection when focusout
        oLayoutInfo.editable.on('blur', function () {
          editor.saveRange(oLayoutInfo.editable);
        });
  
        // basic event callbacks (lowercase)
        // enter, focus, blur, keyup, keydown
        if (options.onenter) {
          oLayoutInfo.editable.keypress(function (event) {
            if (event.keyCode === key.ENTER) { options.onenter(event); }
          });
        }
        if (options.onfocus) { oLayoutInfo.editable.focus(options.onfocus); }
        if (options.onblur) { oLayoutInfo.editable.blur(options.onblur); }
        if (options.onkeyup) { oLayoutInfo.editable.keyup(options.onkeyup); }
        if (options.onkeydown) { oLayoutInfo.editable.keydown(options.onkeydown); }
  
        // callbacks for advanced features (camel)
        // All editor status will be saved on editable with jquery's data
        // for support multiple editor with singleton object.
        oLayoutInfo.editable.data('callbacks', {
          onChange: options.onChange,
          onAutoSave: options.onAutoSave,
          onPasteBefore: options.onPasteBefore,
          onPasteAfter: options.onPasteAfter,
          onImageUpload: options.onImageUpload,
          onImageUploadError: options.onImageUpload,
          onFileUpload: options.onFileUpload,
          onFileUploadError: options.onFileUpload
        });
      };
  
      this.dettach = function (oLayoutInfo) {
        oLayoutInfo.editable.off();
        oLayoutInfo.toolbar.off();
        oLayoutInfo.handle.off();
        oLayoutInfo.popover.off();
      };
    };
  
    /**
     * Locale
     */
    var Locale = {
      'en-US': {
        font: {
          bold: 'Bold',
          italic: 'Italic',
          underline: 'Underline',
          strike: 'Strike',
          clear: 'Remove Font Style',
          height: 'Line Height',
          size: 'Font Size'
        },
        image: {
          image: 'Picture',
          insert: 'Insert Image',
          resizeFull: 'Resize Full',
          resizeHalf: 'Resize Half',
          resizeQuarter: 'Resize Quarter',
          floatLeft: 'Float Left',
          floatRight: 'Float Right',
          floatNone: 'Float None',
          dragImageHere: 'Drag an image here',
          selectFromFiles: 'Select from files',
          url: 'Image URL'
        },
        link: {
          link: 'Link',
          insert: 'Insert Link',
          unlink: 'Unlink',
          edit: 'Edit',
          textToDisplay: 'Text to display',
          url: 'To what URL should this link go?'
        },
        video: {
          video: 'Video',
          videoLink: 'Video Link',
          insert: 'Insert Video',
          url: 'Video URL?',
          providers: '(YouTube, Vimeo, Vine, Instagram, or DailyMotion)'
        },
        table: {
          table: 'Table'
        },
        hr: {
          insert: 'Insert Horizontal Rule'
        },
        style: {
          style: 'Style',
          normal: 'Normal',
          blockquote: 'Quote',
          pre: 'Code',
          h1: 'Header 1',
          h2: 'Header 2',
          h3: 'Header 3',
          h4: 'Header 4',
          h5: 'Header 5',
          h6: 'Header 6'
        },
        lists: {
          unordered: 'Unordered list',
          ordered: 'Ordered list'
        },
        options: {
          help: 'Help',
          fullscreen: 'Full Screen',
          codeview: 'Code View'
        },
        paragraph: {
          paragraph: 'Paragraph',
          outdent: 'Outdent',
          indent: 'Indent',
          left: 'Align left',
          center: 'Align center',
          right: 'Align right',
          justify: 'Justify full'
        },
        color: {
          recent: 'Recent Color',
          more: 'More Color',
          background: 'BackColor',
          foreground: 'FontColor',
          transparent: 'Transparent',
          setTransparent: 'Set transparent',
          reset: 'Reset',
          resetToDefault: 'Reset to default'
        },
        shortcut: {
          shortcuts: 'Keyboard shortcuts',
          close: 'Close',
          textFormatting: 'Text formatting',
          action: 'Action',
          paragraphFormatting: 'Paragraph formatting',
          documentStyle: 'Document Style'
        },
        history: {
          undo: 'Undo',
          redo: 'Redo'
        }
      },
  
      'nl-NL': {
        font: {
          bold: 'Vet',
          italic: 'Cursief',
          underline: 'Onderstrepen',
          strike: 'Doorhalen',
          clear: 'Stijl verwijderen',
          height: 'Regelhoogte',
          size: 'Tekstgrootte'
        },
        image: {
          image: 'Afbeelding',
          insert: 'Afbeelding invoegen',
          resizeFull: 'Volledige breedte',
          resizeHalf: 'Halve breedte',
          resizeQuarter: 'Kwart breedte',
          floatLeft: 'Links uitlijnen',
          floatRight: 'Rechts uitlijnen',
          floatNone: 'Geen uitlijning',
          dragImageHere: 'Sleep hier een afbeelding naar toe',
          selectFromFiles: 'Selecteer een bestand',
          url: 'URL van de afbeelding'
        },
        link: {
          link: 'Link',
          insert: 'Link invoegen',
          unlink: 'Link verwijderen',
          edit: 'Wijzigen',
          textToDisplay: 'Tekst van link',
          url: 'Naar welke URL moet deze link verwijzen?'
        },
        video: {
          video: 'Video',
          videoLink: 'Video Link',
          insert: 'Insert Video',
          url: 'Video URL?',
          providers: '(YouTube, Vimeo, Vine, Instagram, or DailyMotion)'
        },
        table: {
          table: 'Tabel'
        },
        hr: {
          insert: 'Horizontale lijn invoegen'
        },
        style: {
          style: 'Stijl',
          normal: 'Normaal',
          blockquote: 'Quote',
          pre: 'Code',
          h1: 'Kop 1',
          h2: 'Kop 2',
          h3: 'Kop 3',
          h4: 'Kop 4',
          h5: 'Kop 5',
          h6: 'Kop 6'
        },
        lists: {
          unordered: 'Ongeordende lijst',
          ordered: 'Geordende lijst'
        },
        options: {
          help: 'Help',
          fullscreen: 'Volledig scherm',
          codeview: 'Bekijk Code'
        },
        paragraph: {
          paragraph: 'Paragraaf',
          outdent: 'Inspringen verkleinen',
          indent: 'Inspringen vergroten',
          left: 'Links uitlijnen',
          center: 'Centreren',
          right: 'Rechts uitlijnen',
          justify: 'Uitvullen'
        },
        color: {
          recent: 'Recente kleur',
          more: 'Meer kleuren',
          background: 'Achtergrond kleur',
          foreground: 'Tekst kleur',
          transparent: 'Transparant',
          setTransparent: 'Transparant',
          reset: 'Standaard',
          resetToDefault: 'Standaard kleur'
        },
        shortcut: {
          shortcuts: 'Toetsencombinaties',
          close: 'sluiten',
          textFormatting: 'Tekststijlen',
          action: 'Acties',
          paragraphFormatting: 'Paragraafstijlen',
          documentStyle: 'Documentstijlen'
        },
        history: {
          undo: 'Ongedaan maken',
          redo: 'Opnieuw doorvoeren'
        }
      },
  
      'de-DE': {
        font: {
          bold: 'Fett',
          italic: 'Kursiv',
          underline: 'Unterstreichen',
          strike: 'Durchgestrichen',
          clear: 'Zurücksetzen',
          height: 'Zeilenhöhe',
          size: 'Schriftgröße'
        },
        image: {
          image: 'Grafik',
          insert: 'Grafik einfügen',
          resizeFull: 'Originalgröße',
          resizeHalf: 'Größe 1/2',
          resizeQuarter: 'Größe 1/4',
          floatLeft: 'Linksbündig',
          floatRight: 'Rechtsbündig',
          floatNone: 'Kein Textfluss',
          dragImageHere: 'Ziehen Sie ein Bild mit der Maus hierher',
          selectFromFiles: 'Wählen Sie eine Datei aus',
          url: 'Grafik URL'
        },
        link: {
          link: 'Link',
          insert: 'Link einfügen',
          unlink: 'Link entfernen',
          edit: 'Editieren',
          textToDisplay: 'Anzeigetext',
          url: 'Ziel des Links?'
        },
        video: {
          video: 'Video',
          videoLink: 'Video Link',
          insert: 'Insert Video',
          url: 'Video URL?',
          providers: '(YouTube, Vimeo, Vine, Instagram, or DailyMotion)'
        },
        table: {
          table: 'Tabelle'
        },
        hr: {
          insert: 'Eine horizontale Linie einfügen'
        },
        style: {
          style: 'Stil',
          normal: 'Normal',
          blockquote: 'Zitat',
          pre: 'Quellcode',
          h1: 'Überschrift 1',
          h2: 'Überschrift 2',
          h3: 'Überschrift 3',
          h4: 'Überschrift 4',
          h5: 'Überschrift 5',
          h6: 'Überschrift 6'
        },
        lists: {
          unordered: 'Aufzählung',
          ordered: 'Nummerieung'
        },
        options: {
          help: 'Hilfe',
          fullscreen: 'Vollbild',
          codeview: 'HTML-Code anzeigen'
        },
        paragraph: {
          paragraph: 'Absatz',
          outdent: 'Einzug vergrößern',
          indent: 'Einzug verkleinern',
          left: 'Links ausrichten',
          center: 'Zentriert ausrichten',
          right: 'Rechts ausrichten',
          justify: 'Blocksatz'
        },
        color: {
          recent: 'Letzte Farbe',
          more: 'Mehr Farben',
          background: 'Hintergrundfarbe',
          foreground: 'Schriftfarbe',
          transparent: 'Transparenz',
          setTransparent: 'Transparenz setzen',
          reset: 'Zurücksetzen',
          resetToDefault: 'Auf Standard zurücksetzen'
        },
        shortcut: {
          shortcuts: 'Tastenkürzel',
          close: 'Schließen',
          textFormatting: 'Textformatierung',
          action: 'Aktion',
          paragraphFormatting: 'Absatzformatierung',
          documentStyle: 'Dokumentenstil'
        },
        history: {
          undo: 'Rückgängig',
          redo: 'Wiederholen'
        }
      },
  
      'ko-KR': {
        font: {
          bold: '굵게',
          italic: '기울임꼴',
          underline: '밑줄',
          strike: '취소선',
          clear: '글자 효과 없애기',
          height: '줄간격',
          size: '글자 크기'
        },
        image: {
          image: '사진',
          insert: '사진 추가',
          resizeFull: '원본 크기로 변경',
          resizeHalf: '50% 크기로 변경',
          resizeQuarter: '25% 크기로 변경',
          floatLeft: '왼쪽 정렬',
          floatRight: '오른쪽 정렬',
          floatNone: '정렬하지 않음',
          dragImageHere: '사진을 이곳으로 끌어오세요',
          selectFromFiles: '파일 선택',
          url: '사진 URL'
        },
        link: {
          link: '링크',
          insert: '링크 추가',
          unlink: '링크 삭제',
          edit: '수정',
          textToDisplay: '링크에 표시할 내용',
          url: '이동할 URL'
        },
        video: {
          video: '동영상',
          videoLink: '동영상 링크',
          insert: '동영상 추가',
          url: '동영상 URL?',
          providers: '(YouTube, Vimeo, Vine, Instagram, DailyMotion 사용 가능)'
        },
        table: {
          table: '테이블'
        },
        hr: {
          insert: '구분선 추가'
        },
        style: {
          style: '스타일',
          normal: '본문',
          blockquote: '인용구',
          pre: '코드',
          h1: '제목 1',
          h2: '제목 2',
          h3: '제목 3',
          h4: '제목 4',
          h5: '제목 5',
          h6: '제목 6'
        },
        lists: {
          unordered: '글머리 기호',
          ordered: '번호 매기기'
        },
        options: {
          help: '도움말',
          fullscreen: '전체 화면',
          codeview: '코드 보기'
        },
        paragraph: {
          paragraph: '문단 정렬',
          outdent: '내어쓰기',
          indent: '들여쓰기',
          left: '왼쪽 정렬',
          center: '가운데 정렬',
          right: '오른쪽 정렬',
          justify: '양쪽 정렬'
        },
        color: {
          recent: '마지막으로 사용한 색',
          more: '다른 색 선택',
          background: '배경색',
          foreground: '글자색',
          transparent: '투명',
          setTransparent: '투명',
          reset: '취소',
          resetToDefault: '기본 값으로 변경'
        },
        shortcut: {
          shortcuts: '키보드 단축키',
          close: '닫기',
          textFormatting: '글자 스타일 적용',
          action: '기능',
          paragraphFormatting: '문단 스타일 적용',
          documentStyle: '문서 스타일 적용'
        },
        history: {
          undo: '실행 취소',
          redo: '다시 실행'
        }
      }
    };
  
    /**
     * Renderer
     *
     * rendering toolbar and editable
     */
    var Renderer = function () {
      var aToolbarItem, sPopover, sHandle, sDialog, sStatusbar;
  
      /* jshint ignore:start */
      aToolbarItem = {
        picture: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.image + '" data-event="showImageDialog" tabindex="-1"><i class="fa fa-picture-o icon-picture"></i></button>';
        },
        link: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.link.link + '" data-event="showLinkDialog" data-shortcut="Ctrl+K" data-mac-shortcut="⌘+K" tabindex="-1"><i class="fa fa-link icon-link"></i></button>';
        },
        video: function(locale){
            return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.video.video + '" data-event="showVideoDialog" tabindex="-1"><i class="fa fa-youtube-play icon-play"></i></button>';
        },
        table: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" title="' + locale.table.table + '" data-toggle="dropdown" tabindex="-1"><i class="fa fa-table icon-table"></i> <span class="caret"></span></button>' +
          '<ul class="dropdown-menu">' +
          '<div class="note-dimension-picker">' +
          '<div class="note-dimension-picker-mousecatcher" data-event="insertTable" data-value="1x1"></div>' +
          '<div class="note-dimension-picker-highlighted"></div>' +
          '<div class="note-dimension-picker-unhighlighted"></div>' +
          '</div>' +
          '<div class="note-dimension-display"> 1 x 1 </div>' +
          '</ul>';
        },
        style: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" title="' + locale.style.style + '" data-toggle="dropdown" tabindex="-1"><i class="fa fa-magic icon-magic"></i> <span class="caret"></span></button>' +
          '<ul class="dropdown-menu">' +
          '<li><a data-event="formatBlock" data-value="p">' + locale.style.normal + '</a></li>' +
          '<li><a data-event="formatBlock" data-value="blockquote"><blockquote>' + locale.style.blockquote + '</blockquote></a></li>' +
          '<li><a data-event="formatBlock" data-value="pre">' + locale.style.pre + '</a></li>' +
          '<li><a data-event="formatBlock" data-value="h1"><h1>' + locale.style.h1 + '</h1></a></li>' +
          '<li><a data-event="formatBlock" data-value="h2"><h2>' + locale.style.h2 + '</h2></a></li>' +
          '<li><a data-event="formatBlock" data-value="h3"><h3>' + locale.style.h3 + '</h3></a></li>' +
          '<li><a data-event="formatBlock" data-value="h4"><h4>' + locale.style.h4 + '</h4></a></li>' +
          '<li><a data-event="formatBlock" data-value="h5"><h5>' + locale.style.h5 + '</h5></a></li>' +
          '<li><a data-event="formatBlock" data-value="h6"><h6>' + locale.style.h6 + '</h6></a></li>' +
          '</ul>';
        },
        fontsize: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" data-toggle="dropdown" title="' + locale.font.size + '" tabindex="-1"><span class="note-current-fontsize">11</span> <b class="caret"></b></button>' +
          '<ul class="dropdown-menu">' +
          '<li><a data-event="fontSize" data-value="8"><i class="fa fa-check icon-ok"></i> 8</a></li>' +
          '<li><a data-event="fontSize" data-value="9"><i class="fa fa-check icon-ok"></i> 9</a></li>' +
          '<li><a data-event="fontSize" data-value="10"><i class="fa fa-check icon-ok"></i> 10</a></li>' +
          '<li><a data-event="fontSize" data-value="11"><i class="fa fa-check icon-ok"></i> 11</a></li>' +
          '<li><a data-event="fontSize" data-value="12"><i class="fa fa-check icon-ok"></i> 12</a></li>' +
          '<li><a data-event="fontSize" data-value="14"><i class="fa fa-check icon-ok"></i> 14</a></li>' +
          '<li><a data-event="fontSize" data-value="18"><i class="fa fa-check icon-ok"></i> 18</a></li>' +
          '<li><a data-event="fontSize" data-value="24"><i class="fa fa-check icon-ok"></i> 24</a></li>' +
          '<li><a data-event="fontSize" data-value="36"><i class="fa fa-check icon-ok"></i> 36</a></li>' +
          '</ul>';
        },
        color: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small note-recent-color" title="' + locale.color.recent + '" data-event="color" data-value=\'{"backColor":"yellow"}\' tabindex="-1"><i class="fa fa-font icon-font" style="color:black;background-color:yellow;"></i></button>' +
          '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" title="' + locale.color.more + '" data-toggle="dropdown" tabindex="-1">' +
          '<span class="caret"></span>' +
          '</button>' +
          '<ul class="dropdown-menu">' +
          '<li>' +
          '<div class="btn-group">' +
          '<div class="note-palette-title">' + locale.color.background + '</div>' +
          '<div class="note-color-reset" data-event="backColor" data-value="inherit" title="' + locale.color.transparent + '">' + locale.color.setTransparent + '</div>' +
          '<div class="note-color-palette" data-target-event="backColor"></div>' +
          '</div>' +
          '<div class="btn-group">' +
          '<div class="note-palette-title">' + locale.color.foreground + '</div>' +
          '<div class="note-color-reset" data-event="foreColor" data-value="inherit" title="' + locale.color.reset + '">' + locale.color.resetToDefault + '</div>' +
          '<div class="note-color-palette" data-target-event="foreColor"></div>' +
          '</div>' +
          '</li>' +
          '</ul>';
        },
        bold: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.font.bold + '" data-shortcut="Ctrl+B" data-mac-shortcut="⌘+B" data-event="bold" tabindex="-1"><i class="fa fa-bold icon-bold"></i></button>';
        },
        italic: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.font.italic + '" data-shortcut="Ctrl+I" data-mac-shortcut="⌘+I" data-event="italic" tabindex="-1"><i class="fa fa-italic icon-italic"></i></button>';
        },
        underline: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.font.underline + '" data-shortcut="Ctrl+U" data-mac-shortcut="⌘+U" data-event="underline" tabindex="-1"><i class="fa fa-underline icon-underline"></i></button>';
        },
        clear: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.font.clear + '" data-shortcut="Ctrl+\\" data-mac-shortcut="⌘+\\" data-event="removeFormat" tabindex="-1"><i class="fa fa-eraser icon-eraser"></i></button>';
        },
        ul: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.lists.unordered + '" data-shortcut="Ctrl+Shift+8" data-mac-shortcut="⌘+⇧+7" data-event="insertUnorderedList" tabindex="-1"><i class="fa fa-list-ul icon-list-ul"></i></button>';
        },
        ol: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.lists.ordered + '" data-shortcut="Ctrl+Shift+7" data-mac-shortcut="⌘+⇧+8" data-event="insertOrderedList" tabindex="-1"><i class="fa fa-list-ol icon-list-ol"></i></button>';
        },
        paragraph: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" title="' + locale.paragraph.paragraph + '" data-toggle="dropdown" tabindex="-1"><i class="fa fa-align-left icon-align-left"></i>  <span class="caret"></span></button>' +
          '<ul class="dropdown-menu">' +
            '<li>' +
            '<div class="note-align btn-group">' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.left + '" data-shortcut="Ctrl+Shift+L" data-mac-shortcut="⌘+⇧+L" data-event="justifyLeft" tabindex="-1"><i class="fa fa-align-left icon-align-left"></i></button>' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.center + '" data-shortcut="Ctrl+Shift+E" data-mac-shortcut="⌘+⇧+E" data-event="justifyCenter" tabindex="-1"><i class="fa fa-align-center icon-align-center"></i></button>' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.right + '" data-shortcut="Ctrl+Shift+R" data-mac-shortcut="⌘+⇧+R" data-event="justifyRight" tabindex="-1"><i class="fa fa-align-right icon-align-right"></i></button>' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.justify + '" data-shortcut="Ctrl+Shift+J" data-mac-shortcut="⌘+⇧+J" data-event="justifyFull" tabindex="-1"><i class="fa fa-align-justify icon-align-justify"></i></button>' +
            '</div>' +
            '</li>' +
            '<li>' +
            '<div class="note-list btn-group">' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.outdent + '" data-shortcut="Ctrl+[" data-mac-shortcut="⌘+[" data-event="outdent" tabindex="-1"><i class="fa fa-outdent icon-indent-left"></i></button>' +
            '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.paragraph.indent + '" data-shortcut="Ctrl+]" data-mac-shortcut="⌘+]" data-event="indent" tabindex="-1"><i class="fa fa-indent icon-indent-right"></i></button>' +
            '</li>' +
          '</ul>';
        },
        height: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small dropdown-toggle" data-toggle="dropdown" title="' + locale.font.height + '" tabindex="-1"><i class="fa fa-text-height icon-text-height"></i>&nbsp; <b class="caret"></b></button>' +
          '<ul class="dropdown-menu">' +
          '<li><a data-event="lineHeight" data-value="1.0"><i class="fa fa-check icon-ok"></i> 1.0</a></li>' +
          '<li><a data-event="lineHeight" data-value="1.2"><i class="fa fa-check icon-ok"></i> 1.2</a></li>' +
          '<li><a data-event="lineHeight" data-value="1.4"><i class="fa fa-check icon-ok"></i> 1.4</a></li>' +
          '<li><a data-event="lineHeight" data-value="1.5"><i class="fa fa-check icon-ok"></i> 1.5</a></li>' +
          '<li><a data-event="lineHeight" data-value="1.6"><i class="fa fa-check icon-ok"></i> 1.6</a></li>' +
          '<li><a data-event="lineHeight" data-value="1.8"><i class="fa fa-check icon-ok"></i> 1.8</a></li>' +
          '<li><a data-event="lineHeight" data-value="2.0"><i class="fa fa-check icon-ok"></i> 2.0</a></li>' +
          '<li><a data-event="lineHeight" data-value="3.0"><i class="fa fa-check icon-ok"></i> 3.0</a></li>' +
          '</ul>';
        },
        help: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.options.help + '" data-shortcut="Ctrl+/" data-mac-shortcut="⌘+/" data-event="showHelpDialog" tabindex="-1"><i class="fa fa-question icon-question"></i></button>';
        },
        fullscreen: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.options.fullscreen + '" data-event="fullscreen" tabindex="-1"><i class="fa fa-arrows-alt icon-fullscreen"></i></button>';
        },
        codeview: function(locale) {
          return '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.options.codeview + '" data-event="codeview" tabindex="-1"><i class="fa fa-code icon-code"></i></button>';
        }
      };
      sPopover = function(locale) {
        return '<div class="note-popover">' +
                  '<div class="note-link-popover popover bottom in" style="display: none;">' +
                    '<div class="arrow"></div>' +
                    '<div class="popover-content note-link-content">' +
                      '<a href="http://www.google.com" target="_blank">www.google.com</a>&nbsp;&nbsp;' +
                      '<div class="note-insert btn-group">' +
                      '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.link.edit + '" data-event="showLinkDialog" tabindex="-1"><i class="fa fa-edit icon-edit"></i></button>' +
                      '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.link.unlink + '" data-event="unlink" tabindex="-1"><i class="fa fa-unlink icon-unlink"></i></button>' +
                      '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.video.videoLink +'" data-event="showVideoDialog" tabindex="-1"><i class="fa fa-youtube-play icon-play"></i></button>' +
                      '</div>' +
                    '</div>' +
                  '</div>' +
                  '<div class="note-image-popover popover bottom in" style="display: none;">' +
                    '<div class="arrow"></div>' +
                    '<div class="popover-content note-image-content">' +
                      '<div class="btn-group">' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.resizeFull + '" data-event="resize" data-value="1" tabindex="-1"><span class="note-fontsize-10">100%</span> </button>' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.resizeHalf + '" data-event="resize" data-value="0.5" tabindex="-1"><span class="note-fontsize-10">50%</span> </button>' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.resizeQuarter + '" data-event="resize" data-value="0.25" tabindex="-1"><span class="note-fontsize-10">25%</span> </button>' +
                      '</div>' +
                      '<div class="btn-group">' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.floatLeft + '" data-event="floatMe" data-value="left" tabindex="-1"><i class="fa fa-align-left icon-align-left"></i></button>' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.floatRight + '" data-event="floatMe" data-value="right" tabindex="-1"><i class="fa fa-align-right icon-align-right"></i></button>' +
                        '<button type="button" class="btn btn-default btn-sm btn-small" title="' + locale.image.floatNone + '" data-event="floatMe" data-value="none" tabindex="-1"><i class="fa fa-align-justify icon-align-justify"></i></button>' +
                      '</div>' +
                    '</div>' +
                  '</div>' +
                '</div>';
      };
  
      sHandle = '<div class="note-handle">' +
                  '<div class="note-control-selection">' +
                    '<div class="note-control-selection-bg"></div>' +
                    '<div class="note-control-holder note-control-nw"></div>' +
                    '<div class="note-control-holder note-control-ne"></div>' +
                    '<div class="note-control-holder note-control-sw"></div>' +
                    '<div class="note-control-sizing note-control-se"></div>' +
                    '<div class="note-control-selection-info"></div>' +
                  '</div>' +
                '</div>';
  
      var sShortcutText = function(locale) {
        return '<table class="note-shortcut">' +
                 '<thead>' +
                   '<tr><th></th><th>' + locale.shortcut.textFormatting + '</th></tr>' +
                 '</thead>' +
                 '<tbody>' +
                   '<tr><td>⌘ + B</td><td>' + locale.font.bold + '</td></tr>' +
                   '<tr><td>⌘ + I</td><td>' + locale.font.italic + '</td></tr>' +
                   '<tr><td>⌘ + U</td><td>' + locale.font.underline + '</td></tr>' +
                   '<tr><td>⌘ + ⇧ + S</td><td>' + locale.font.strike + '</td></tr>' +
                   '<tr><td>⌘ + \\</td><td>' + locale.font.clear + '</td></tr>' +
                   '</tr>' +
                 '</tbody>' +
               '</table>';
      };
  
      var sShortcutAction = function(locale) {
        return '<table class="note-shortcut">' +
                 '<thead>' +
                   '<tr><th></th><th>' + locale.shortcut.action + '</th></tr>' +
                 '</thead>' +
                 '<tbody>' +
                   '<tr><td>⌘ + Z</td><td>' + locale.history.undo + '</td></tr>' +
                   '<tr><td>⌘ + ⇧ + Z</td><td>' + locale.history.redo + '</td></tr>' +
                   '<tr><td>⌘ + ]</td><td>' + locale.paragraph.indent + '</td></tr>' +
                   '<tr><td>⌘ + [</td><td>' + locale.paragraph.outdent + '</td></tr>' +
                   '<tr><td>⌘ + K</td><td>' + locale.link.insert + '</td></tr>' +
                   '<tr><td>⌘ + ENTER</td><td>' + locale.hr.insert + '</td></tr>' +
                 '</tbody>' +
               '</table>';
      };
  
      var sShortcutPara = function(locale) {
        return '<table class="note-shortcut">' +
                  '<thead>' +
                    '<tr><th></th><th>' + locale.shortcut.paragraphFormatting + '</th></tr>' +
                  '</thead>' +
                  '<tbody>' +
                    '<tr><td>⌘ + ⇧ + L</td><td>' + locale.paragraph.left + '</td></tr>' +
                    '<tr><td>⌘ + ⇧ + E</td><td>' + locale.paragraph.center + '</td></tr>' +
                    '<tr><td>⌘ + ⇧ + R</td><td>' + locale.paragraph.right + '</td></tr>' +
                    '<tr><td>⌘ + ⇧ + J</td><td>' + locale.paragraph.justify + '</td></tr>' +
                    '<tr><td>⌘ + ⇧ + NUM7</td><td>' + locale.lists.ordered + '</td></tr>' +
                    '<tr><td>⌘ + ⇧ + NUM8</td><td>' + locale.lists.unordered + '</td></tr>' +
                  '</tbody>' +
                '</table>';
      };
  
      var sShortcutStyle = function(locale) {
        return '<table class="note-shortcut">' +
                 '<thead>' +
                   '<tr><th></th><th>' + locale.shortcut.documentStyle + '</th></tr>' +
                 '</thead>' +
                 '<tbody>' +
                   '<tr><td>⌘ + NUM0</td><td>' + locale.style.normal + '</td></tr>' +
                   '<tr><td>⌘ + NUM1</td><td>' + locale.style.h1 + '</td></tr>' +
                   '<tr><td>⌘ + NUM2</td><td>' + locale.style.h2 + '</td></tr>' +
                   '<tr><td>⌘ + NUM3</td><td>' + locale.style.h3 + '</td></tr>' +
                   '<tr><td>⌘ + NUM4</td><td>' + locale.style.h4 + '</td></tr>' +
                   '<tr><td>⌘ + NUM5</td><td>' + locale.style.h5 + '</td></tr>' +
                   '<tr><td>⌘ + NUM6</td><td>' + locale.style.h6 + '</td></tr>' +
                 '</tbody>' +
               '</table>';
      };
  
      var sShortcutTable = function(locale) {
        return '<table class="note-shortcut-layout">' +
                 '<tbody>' +
                   '<tr><td>' + sShortcutAction(locale) + '</td><td>' + sShortcutText(locale) + '</td></tr>' +
                   '<tr><td>' + sShortcutStyle(locale) + '</td><td>' + sShortcutPara(locale) + '</td></tr>' +
                 '</tbody>' +
               '</table>';
      };
  
      var replaceMacKeys = function (sHtml) {
          return sHtml.replace(/⌘/g, 'Ctrl').replace(/⇧/g, 'Shift');
      };
  
      var sDialog = function(locale) {
        return '<div class="note-dialog">' +
                 '<div class="note-image-dialog modal" aria-hidden="false">' +
                   '<div class="modal-dialog">' +
                     '<div class="modal-content">' +
                       '<div class="modal-header">' +
                         '<button type="button" class="close" aria-hidden="true" tabindex="-1">×</button>' +
                         '<h4>' + locale.image.insert + '</h4>' +
                       '</div>' +
                       '<div class="modal-body">' +
                         '<div class="row-fluid">' +
                           '<h5>' + locale.image.selectFromFiles + '</h5>' +
                           '<input class="note-image-input" type="file" name="files" accept="image/*" />' +
                           '<h5>' + locale.image.url + '</h5>' +
                           '<input class="note-image-url form-control span12" type="text" />' +
                         '</div>' +
                       '</div>' +
                       '<div class="modal-footer">' +
                         '<button href="#" class="btn btn-primary note-image-btn disabled" disabled="disabled">' + locale.image.insert + '</button>' +
                       '</div>' +
                     '</div>' +
                   '</div>' +
                 '</div>' +
                 '<div class="note-link-dialog modal" aria-hidden="false">' +
                   '<div class="modal-dialog">' +
                     '<div class="modal-content">' +
                       '<div class="modal-header">' +
                         '<button type="button" class="close" aria-hidden="true" tabindex="-1">×</button>' +
                         '<h4>' + locale.link.insert + '</h4>' +
                       '</div>' +
                       '<div class="modal-body">' +
                         '<div class="row-fluid">' +
  
                         '<div class="form-group">' +
                           '<label>' + locale.link.textToDisplay + '</label>' +
                           '<span class="note-link-text form-control input-xlarge uneditable-input" />' +
                         '</div>' +
                         '<div class="form-group">' +
                           '<label>' + locale.link.url + '</label>' +
                           '<input class="note-link-url form-control span12" type="text" />' +
                         '</div>' +
                         '</div>' +
                       '</div>' +
                       '<div class="modal-footer">' +
                         '<button href="#" class="btn btn-primary note-link-btn disabled" disabled="disabled">' + locale.link.insert + '</button>' +
                       '</div>' +
                     '</div>' +
                   '</div>' +
                 '</div>' +
                     '<div class="note-video-dialog modal" aria-hidden="false">' +
                       '<div class="modal-dialog">' +
                         '<div class="modal-content">' +
                           '<div class="modal-header">' +
                             '<button type="button" class="close" aria-hidden="true" tabindex="-1">×</button>' +
                             '<h4>' + locale.video.insert +'</h4>' +
                           '</div>' +
                           '<div class="modal-body">' +
                             '<div class="row-fluid">' +
  
                             '<div class="form-group">' +
                               '<label>' + locale.video.url + '</label>&nbsp;<small class="text-muted">' + locale.video.providers + '</small>' +
                               '<input class="note-video-url form-control span12" type="text" />' +
                             '</div>' +
                             '</div>' +
                           '</div>' +
                           '<div class="modal-footer">' +
                             '<button href="#" class="btn btn-primary note-video-btn disabled" disabled="disabled">' + locale.video.insert + '</button>' +
                           '</div>' +
                         '</div>' +
                       '</div>' +
                     '</div>' +
                 '<div class="note-help-dialog modal" aria-hidden="false">' +
                   '<div class="modal-dialog">' +
                     '<div class="modal-content">' +
                       '<div class="modal-body">' +
                         '<div class="modal-background">' +
                         '<a class="modal-close pull-right" aria-hidden="true" tabindex="-1">' + locale.shortcut.close + '</a>' +
                         '<div class="title">' + locale.shortcut.shortcuts + '</div>' +
                         (agent.bMac ? sShortcutTable(locale) : replaceMacKeys(sShortcutTable(locale))) +
                         '<p class="text-center"><a href="//hackerwins.github.io/summernote/" target="_blank">Summernote v0.4</a> · <a href="//github.com/HackerWins/summernote" target="_blank">Project</a> · <a href="//github.com/HackerWins/summernote/issues" target="_blank">Issues</a></p>' +
                       '</div>' +
                     '</div>' +
                   '</div>' +
                 '</div>' +
               '</div>';
      };
  
      sStatusbar = '<div class="note-resizebar"><div class="note-icon-bar"></div><div class="note-icon-bar"></div><div class="note-icon-bar"></div></div>';
      /* jshint ignore:end */
  
      // createTooltip
      var createTooltip = function ($container, sPlacement) {
        $container.find('button').each(function (i, elBtn) {
          var $btn = $(elBtn);
          var sShortcut = $btn.attr(agent.bMac ? 'data-mac-shortcut': 'data-shortcut');
          if (sShortcut) { $btn.attr('title', function (i, v) { return v + ' (' + sShortcut + ')'; }); }
        // bootstrap tooltip on btn-group bug: https://github.com/twitter/bootstrap/issues/5687
        }).tooltip({container: 'body', placement: sPlacement || 'top'});
      };
  
      // pallete colors
      var aaColor = [
        ['#000000', '#424242', '#636363', '#9C9C94', '#CEC6CE', '#EFEFEF', '#F7F7F7', '#FFFFFF'],
        ['#FF0000', '#FF9C00', '#FFFF00', '#00FF00', '#00FFFF', '#0000FF', '#9C00FF', '#FF00FF'],
        ['#F7C6CE', '#FFE7CE', '#FFEFC6', '#D6EFD6', '#CEDEE7', '#CEE7F7', '#D6D6E7', '#E7D6DE'],
        ['#E79C9C', '#FFC69C', '#FFE79C', '#B5D6A5', '#A5C6CE', '#9CC6EF', '#B5A5D6', '#D6A5BD'],
        ['#E76363', '#F7AD6B', '#FFD663', '#94BD7B', '#73A5AD', '#6BADDE', '#8C7BC6', '#C67BA5'],
        ['#CE0000', '#E79439', '#EFC631', '#6BA54A', '#4A7B8C', '#3984C6', '#634AA5', '#A54A7B'],
        ['#9C0000', '#B56308', '#BD9400', '#397B21', '#104A5A', '#085294', '#311873', '#731842'],
        ['#630000', '#7B3900', '#846300', '#295218', '#083139', '#003163', '#21104A', '#4A1031']
      ];
  
      // createPalette
      var createPalette = function ($container) {
        $container.find('.note-color-palette').each(function () {
          var $palette = $(this), sEvent = $palette.attr('data-target-event');
          var sPaletteContents = '';
          for (var row = 0, szRow = aaColor.length; row < szRow; row++) {
            var aColor = aaColor[row];
            var sLine = '<div>';
            for (var col = 0, szCol = aColor.length; col < szCol; col++) {
              var sColor = aColor[col];
              var sButton = ['<button type="button" class="note-color-btn" style="background-color:', sColor,
                             ';" data-event="', sEvent,
                             '" data-value="', sColor,
                             '" title="', sColor,
                             '" data-toggle="button" tabindex="-1"></button>'].join('');
              sLine += sButton;
            }
            sLine += '</div>';
            sPaletteContents += sLine;
          }
          $palette.html(sPaletteContents);
        });
      };
  
      // createLayout
      this.createLayout = function ($holder, options) {
        var nHeight = options.height,
            nTabsize = options.tabsize,
            aToolbarSetting = options.toolbar;
  
        //already created
        if ($holder.next().hasClass('note-editor')) { return; }
  
        //01. create Editor
        var $editor = $('<div class="note-editor"></div>');
        $editor.data('options', options);
  
        //02. statusbar
        if (nHeight > 0) {
          $('<div class="note-statusbar">' + sStatusbar + '</div>').prependTo($editor);
        }
  
        //03. create Editable
        var $editable = $('<div class="note-editable" contentEditable="true"></div>').prependTo($editor);
        if (nHeight) {
          $editable.height(nHeight);
          $editable.data('optionHeight', nHeight);
        }
        if (nTabsize) {
          $editable.data('tabsize', nTabsize);
        }
  
        $editable.html(dom.html($holder) || dom.emptyPara);
        $editable.data('NoteHistory', new History());
  
        //031. create codable
        $('<textarea class="note-codable"></textarea>').prependTo($editor);
  
        //032. set styleWithCSS for backColor / foreColor clearing with 'inherit'.
        setTimeout(function () { // protect FF Error: NS_ERROR_FAILURE: Failure
          document.execCommand('styleWithCSS', 0, true);
        });
  
        //04. create Toolbar
        var sToolbar = '';
        for (var idx = 0, sz = aToolbarSetting.length; idx < sz; idx ++) {
          var group = aToolbarSetting[idx];
          sToolbar += '<div class="note-' + group[0] + ' btn-group">';
          for (var i = 0, szGroup = group[1].length; i < szGroup; i++) {
            sToolbar += aToolbarItem[group[1][i]](Locale[options.locale]);
          }
          sToolbar += '</div>';
        }
  
        sToolbar = '<div class="note-toolbar btn-toolbar">' + sToolbar + '</div>';
  
        var $toolbar = $(sToolbar).prependTo($editor);
        createPalette($toolbar);
        createTooltip($toolbar, 'bottom');
  
        //05. create Popover
        var $popover = $(sPopover(Locale[options.locale])).prependTo($editor);
        createTooltip($popover);
  
        //06. handle(control selection, ...)
        $(sHandle).prependTo($editor);
  
        //07. create Dialog
        var $dialog = $(sDialog(Locale[options.locale])).prependTo($editor);
        $dialog.find('button.close, a.modal-close').click(function () {
          $(this).closest('.modal').modal('hide');
        });
  
        //08. create Dropzone
        $('<div class="note-dropzone"><div class="note-dropzone-message"></div></div>').prependTo($editor);
  
        //09. Editor/Holder switch
        $editor.insertAfter($holder);
        $holder.hide();
      };
  
      // layoutInfoFromHolder
      var layoutInfoFromHolder = this.layoutInfoFromHolder = function ($holder) {
        var $editor = $holder.next();
        if (!$editor.hasClass('note-editor')) { return; }
  
        return {
          editor: $editor,
          dropzone: $editor.find('.note-dropzone'),
          toolbar: $editor.find('.note-toolbar'),
          editable: $editor.find('.note-editable'),
          codable: $editor.find('.note-codable'),
          statusbar: $editor.find('.note-statusbar'),
          popover: $editor.find('.note-popover'),
          handle: $editor.find('.note-handle'),
          dialog: $editor.find('.note-dialog')
        };
      };
  
      // removeLayout
      this.removeLayout = function ($holder) {
        var info = layoutInfoFromHolder($holder);
        if (!info) { return; }
        $holder.html(info.editable.html());
  
        info.editor.remove();
        $holder.show();
      };
    };
  
    var renderer = new Renderer();
    var eventHandler = new EventHandler();
  
    /**
     * extend jquery fn
     */
    $.fn.extend({
      // create Editor Layout and attach Key and Mouse Event
      summernote: function (options) {
        options = $.extend({
          toolbar: [
            ['style', ['style']],
            ['font', ['bold', 'italic', 'underline', 'clear']],
            ['fontsize', ['fontsize']],
            ['color', ['color']],
            ['para', ['ul', 'ol', 'paragraph']],
            ['height', ['height']],
            ['table', ['table']],
            ['insert', ['link', 'picture', 'video']],
            ['view', ['fullscreen', 'codeview']],
            ['help', ['help']]
          ],
          locale: 'en-US'
        }, options);
  
        this.each(function (idx, elHolder) {
          var $holder = $(elHolder);
  
          // createLayout with options
          renderer.createLayout($holder, options);
  
          var info = renderer.layoutInfoFromHolder($holder);
          eventHandler.attach(info, options);
  
          // Textarea auto filling the code before form submit.
          if (dom.isTextarea($holder[0])) {
            $holder.closest('form').submit(function () {
              $holder.html($holder.code());
            });
          }
        });
  
        if (this.first() && options.focus) { // focus on first editable element
          var info = renderer.layoutInfoFromHolder(this.first());
          info.editable.focus();
        }
        if (this.length > 0 && options.oninit) { // callback on init
          options.oninit();
        }
      },
      // get the HTML contents of note or set the HTML contents of note.
      code: function (sHTML) {
        // get the HTML contents
        if (sHTML === undefined) {
          var $holder = this.first();
          if ($holder.length === 0) { return; }
          var info = renderer.layoutInfoFromHolder($holder);
          if (!!(info && info.editable)) {
            var bCodeview = info.editor.hasClass('codeview');
            if (agent.bCodeMirror) {
              info.codable.data('cmEditor').save();
            }
            return bCodeview ? info.codable.val() : info.editable.html();
          }
          return $holder.html();
        }
  
        // set the HTML contents
        this.each(function (i, elHolder) {
          var info = renderer.layoutInfoFromHolder($(elHolder));
          if (info && info.editable) { info.editable.html(sHTML); }
        });
      },
      // destroy Editor Layout and dettach Key and Mouse Event
      destroy: function () {
        this.each(function (idx, elHolder) {
          var $holder = $(elHolder);
  
          var info = renderer.layoutInfoFromHolder($holder);
          if (!info || !info.editable) { return; }
          eventHandler.dettach(info);
          renderer.removeLayout($holder);
        });
      },
      // inner object for test
      summernoteInner: function () {
        return { dom: dom, list: list, func: func, range: range };
      }
    });
  }));
  