jquery.handsontable.js

/**
 * Handsontable 0.8.16
 * Handsontable is a simple jQuery plugin for editable tables with basic copy-paste compatibility with Excel and Google Docs
 *
 * Copyright 2012, Marcin Warpechowski
 * Licensed under the MIT license.
 * http://handsontable.com/
 *
 * Date: Tue Mar 26 2013 02:34:10 GMT+0100 (Central European Standard Time)
 */
/*jslint white: true, browser: true, plusplus: true, indent: 4, maxerr: 50 */

var Handsontable = { //class namespace
  extension: {}, //extenstion namespace
  helper: {} //helper namespace
};

(function ($, window, Handsontable) {
  "use strict";
/**
 * Handsontable constructor
 * @param rootElement The jQuery element in which Handsontable DOM will be inserted
 * @param settings
 * @constructor
 */
Handsontable.Core = function (rootElement, settings) {
  this.rootElement = rootElement;
  this.guid = 'ht_' + Handsontable.helper.randomString(); //this is the namespace for global events

  if (!this.rootElement[0].id) {
    this.rootElement[0].id = this.guid; //if root element does not have an id, assign a random id
  }

  var priv, datamap, grid, selection, editproxy, autofill, self = this;

  priv = {
    settings: {},
    selStart: (new Handsontable.SelectionPoint()),
    selEnd: (new Handsontable.SelectionPoint()),
    editProxy: false,
    isPopulated: null,
    scrollable: null,
    undoRedo: null,
    extensions: {},
    colToProp: null,
    propToCol: null,
    dataSchema: null,
    dataType: 'array',
    firstRun: true
  };

  datamap = {
    recursiveDuckSchema: function (obj) {
      var schema;
      if ($.isPlainObject(obj)) {
        schema = {};
        for (var i in obj) {
          if (obj.hasOwnProperty(i)) {
            if ($.isPlainObject(obj[i])) {
              schema[i] = datamap.recursiveDuckSchema(obj[i]);
            }
            else {
              schema[i] = null;
            }
          }
        }
      }
      else {
        schema = [];
      }
      return schema;
    },

    recursiveDuckColumns: function (schema, lastCol, parent) {
      var prop, i;
      if (typeof lastCol === 'undefined') {
        lastCol = 0;
        parent = '';
      }
      if ($.isPlainObject(schema)) {
        for (i in schema) {
          if (schema.hasOwnProperty(i)) {
            if (schema[i] === null) {
              prop = parent + i;
              priv.colToProp.push(prop);
              priv.propToCol[prop] = lastCol;
              lastCol++;
            }
            else {
              lastCol = datamap.recursiveDuckColumns(schema[i], lastCol, i + '.');
            }
          }
        }
      }
      return lastCol;
    },

    createMap: function () {
      if (typeof datamap.getSchema() === "undefined") {
        throw new Error("trying to create `columns` definition but you didnt' provide `schema` nor `data`");
      }
      var i, ilen, schema = datamap.getSchema();
      priv.colToProp = [];
      priv.propToCol = {};
      if (priv.settings.columns) {
        for (i = 0, ilen = priv.settings.columns.length; i < ilen; i++) {
          priv.colToProp[i] = priv.settings.columns[i].data;
          priv.propToCol[priv.settings.columns[i].data] = i;
        }
      }
      else {
        datamap.recursiveDuckColumns(schema);
      }
    },

    colToProp: function (col) {
      col = Handsontable.PluginModifiers.run(self, 'col', col);
      if (priv.colToProp && typeof priv.colToProp[col] !== 'undefined') {
        return priv.colToProp[col];
      }
      else {
        return col;
      }
    },

    propToCol: function (prop) {
      var col;
      if (typeof priv.propToCol[prop] !== 'undefined') {
        col = priv.propToCol[prop];
      }
      else {
        col = prop;
      }
      col = Handsontable.PluginModifiers.run(self, 'col', col);
      return col;
    },

    getSchema: function () {
      if (priv.settings.dataSchema) {
        if (typeof priv.settings.dataSchema === 'function') {
          return priv.settings.dataSchema();
        }
        return priv.settings.dataSchema;
      }
      return priv.duckDataSchema;
    },

    /**
     * Creates row at the bottom of the data array
     * @param {Number} [index] Optional. Index of the row before which the new row will be inserted
     */
    createRow: function (index) {
      var row
        , rowCount = self.countRows();

      if (typeof index !== 'number' || index >= rowCount) {
        index = rowCount;
      }

      if (priv.dataType === 'array') {
        row = [];
        for (var c = 0, clen = self.countCols(); c < clen; c++) {
          row.push(null);
        }
      }
      else if (priv.dataType === 'function') {
        row = priv.settings.dataSchema(index);
      }
      else {
        row = $.extend(true, {}, datamap.getSchema());
      }
      if (priv.settings.onCreateRow) {
        priv.settings.onCreateRow(index, row);
      }
      if (index === rowCount) {
        priv.settings.data.push(row);
      }
      else {
        priv.settings.data.splice(index, 0, row);
      }
      self.forceFullRender = true; //used when data was changed
    },

    /**
     * Creates col at the right of the data array
     * @param {Object} [index] Optional. Index of the column before which the new column will be inserted
     */
    createCol: function (index) {
      if (priv.dataType === 'object' || priv.settings.columns) {
        throw new Error("Cannot create new column. When data source in an object, you can only have as much columns as defined in first data row, data schema or in the 'columns' setting");
      }
      var r = 0, rlen = self.countRows();
      if (typeof index !== 'number' || index >= self.countCols()) {
        for (; r < rlen; r++) {
          if (typeof priv.settings.data[r] === 'undefined') {
            priv.settings.data[r] = [];
          }
          priv.settings.data[r].push('');
        }
      }
      else {
        for (; r < rlen; r++) {
          priv.settings.data[r].splice(index, 0, '');
        }
      }
      self.forceFullRender = true; //used when data was changed
    },

    /**
     * Removes row from the data array
     * @param {Number} [index] Optional. Index of the row to be removed. If not provided, the last row will be removed
     * @param {Number} [amount] Optional. Amount of the rows to be removed. If not provided, one row will be removed
     */
    removeRow: function (index, amount) {
      if (!amount) {
        amount = 1;
      }
      if (typeof index !== 'number') {
        index = -amount;
      }
      priv.settings.data.splice(index, amount);
      self.forceFullRender = true; //used when data was changed
    },

    /**
     * Removes column from the data array
     * @param {Number} [index] Optional. Index of the column to be removed. If not provided, the last column will be removed
     * @param {Number} [amount] Optional. Amount of the columns to be removed. If not provided, one column will be removed
     */
    removeCol: function (index, amount) {
      if (priv.dataType === 'object' || priv.settings.columns) {
        throw new Error("cannot remove column with object data source or columns option specified");
      }
      if (!amount) {
        amount = 1;
      }
      if (typeof index !== 'number') {
        index = -amount;
      }
      for (var r = 0, rlen = self.countRows(); r < rlen; r++) {
        priv.settings.data[r].splice(index, amount);
      }
      self.forceFullRender = true; //used when data was changed
    },

    /**
     * Returns single value from the data array
     * @param {Number} row
     * @param {Number} prop
     */
    getVars: {},
    get: function (row, prop) {
      datamap.getVars.row = row;
      datamap.getVars.prop = prop;
      Handsontable.PluginHooks.run(self, 'beforeGet', datamap.getVars);
      if (typeof datamap.getVars.prop === 'string' && datamap.getVars.prop.indexOf('.') > -1) {
        var sliced = datamap.getVars.prop.split(".");
        var out = priv.settings.data[datamap.getVars.row];
        if (!out) {
          return null;
        }
        for (var i = 0, ilen = sliced.length; i < ilen; i++) {
          out = out[sliced[i]];
          if (typeof out === 'undefined') {
            return null;
          }
        }
        return out;
      }
      else if (typeof datamap.getVars.prop === 'function') {
        /**
         *  allows for interacting with complex structures, for example
         *  d3/jQuery getter/setter properties:
         *
         *    {columns: [{
         *      data: function(row, value){
         *        if(arguments.length === 1){
         *          return row.property();
         *        }
         *        row.property(value);
         *      }
         *    }]}
         */
        return datamap.getVars.prop(priv.settings.data.slice(
          datamap.getVars.row,
          datamap.getVars.row + 1
        )[0]);
      }
      else {
        return priv.settings.data[datamap.getVars.row] ? priv.settings.data[datamap.getVars.row][datamap.getVars.prop] : null;
      }
    },

    /**
     * Saves single value to the data array
     * @param {Number} row
     * @param {Number} prop
     * @param {String} value
     */
    setVars: {},
    set: function (row, prop, value) {
      datamap.setVars.row = row;
      datamap.setVars.prop = prop;
      datamap.setVars.value = value;
      Handsontable.PluginHooks.run(self, 'beforeSet', datamap.setVars);
      if (typeof datamap.setVars.prop === 'string' && datamap.setVars.prop.indexOf('.') > -1) {
        var sliced = datamap.setVars.prop.split(".");
        var out = priv.settings.data[datamap.setVars.row];
        for (var i = 0, ilen = sliced.length - 1; i < ilen; i++) {
          out = out[sliced[i]];
        }
        out[sliced[i]] = datamap.setVars.value;
      }
      else if (typeof datamap.setVars.prop === 'function') {
        /* see the `function` handler in `get` */
        datamap.setVars.prop(priv.settings.data.slice(
          datamap.setVars.row,
          datamap.setVars.row + 1
        )[0], datamap.setVars.value);
      }
      else {
        priv.settings.data[datamap.setVars.row][datamap.setVars.prop] = datamap.setVars.value;
      }
    },

    /**
     * Clears the data array
     */
    clear: function () {
      for (var r = 0; r < self.countRows(); r++) {
        for (var c = 0; c < self.countCols(); c++) {
          datamap.set(r, datamap.colToProp(c), '');
        }
      }
    },

    /**
     * Returns the data array
     * @return {Array}
     */
    getAll: function () {
      return priv.settings.data;
    },

    /**
     * Returns data range as array
     * @param {Object} start Start selection position
     * @param {Object} end End selection position
     * @return {Array}
     */
    getRange: function (start, end) {
      var r, rlen, c, clen, output = [], row;
      rlen = Math.max(start.row, end.row);
      clen = Math.max(start.col, end.col);
      for (r = Math.min(start.row, end.row); r <= rlen; r++) {
        row = [];
        for (c = Math.min(start.col, end.col); c <= clen; c++) {
          row.push(datamap.get(r, datamap.colToProp(c)));
        }
        output.push(row);
      }
      return output;
    },

    /**
     * Return data as text (tab separated columns)
     * @param {Object} start (Optional) Start selection position
     * @param {Object} end (Optional) End selection position
     * @return {String}
     */
    getText: function (start, end) {
      return SheetClip.stringify(datamap.getRange(start, end));
    }
  };

  grid = {
    /**
     * Inserts or removes rows and columns
     * @param {String} action Possible values: "insert_row", "insert_col", "remove_row", "remove_col"
     * @param {Number} index
     * @param {Number} amount
     */
    alter: function (action, index, amount) {
      var oldData, newData, changes, r, rlen, c, clen, delta;
      oldData = $.extend(true, [], datamap.getAll());

      switch (action) {
        case "insert_row":
          if (!amount) {
            amount = 1;
          }
          delta = 0;
          while (delta < amount && self.countRows() < priv.settings.maxRows) {
            datamap.createRow(index);
            delta++;
          }
          if (delta) {
            if (priv.selStart.exists() && priv.selStart.row() >= index) {
              priv.selStart.row(priv.selStart.row() + delta);
              selection.transformEnd(delta, 0); //will call render() internally
            }
            else {
              selection.refreshBorders(); //it will call render and prepare methods
            }
          }
          break;

        case "insert_col":
          if (!amount) {
            amount = 1;
          }
          delta = 0;
          while (delta < amount && self.countCols() < priv.settings.maxCols) {
            datamap.createCol(index);
            delta++;
          }
          if (delta) {
            if (priv.selStart.exists() && priv.selStart.col() >= index) {
              priv.selStart.col(priv.selStart.col() + delta);
              selection.transformEnd(0, delta); //will call render() internally
            }
            else {
              selection.refreshBorders(); //it will call render and prepare methods
            }
          }
          break;

        case "remove_row":
          datamap.removeRow(index, amount);
          grid.keepEmptyRows();
          selection.refreshBorders(); //it will call render and prepare methods
          break;

        case "remove_col":
          datamap.removeCol(index, amount);
          grid.keepEmptyRows();
          selection.refreshBorders(); //it will call render and prepare methods
          break;

        default:
          throw Error('There is no such action "' + action + '"');
          break;
      }

      changes = [];
      newData = datamap.getAll();
      for (r = 0, rlen = newData.length; r < rlen; r++) {
        for (c = 0, clen = newData[r].length; c < clen; c++) {
          changes.push([r, c, oldData[r] ? oldData[r][c] : null, newData[r][c]]);
        }
      }
      fireEvent("datachange.handsontable", [changes, 'alter']);
      grid.keepEmptyRows(); //makes sure that we did not add rows that will be removed in next refresh
    },

    /**
     * Makes sure there are empty rows at the bottom of the table
     */
    keepEmptyRows: function () {
      var r, rlen, emptyRows = self.countEmptyRows(true), emptyCols;

      //should I add empty rows to data source to meet minRows?
      rlen = self.countRows();
      if (rlen < priv.settings.minRows) {
        for (r = 0; r < priv.settings.minRows - rlen; r++) {
          datamap.createRow();
        }
      }

      //should I add empty rows to meet minSpareRows?
      if (emptyRows < priv.settings.minSpareRows) {
        for (; emptyRows < priv.settings.minSpareRows && self.countRows() < priv.settings.maxRows; emptyRows++) {
          datamap.createRow();
        }
      }

      //count currently empty cols
      emptyCols = self.countEmptyCols(true);

      //should I add empty cols to meet minCols?
      if (!priv.settings.columns && self.countCols() < priv.settings.minCols) {
        for (; self.countCols() < priv.settings.minCols; emptyCols++) {
          datamap.createCol();
        }
      }

      //should I add empty cols to meet minSpareCols?
      if (!priv.settings.columns && priv.dataType === 'array' && emptyCols < priv.settings.minSpareCols) {
        for (; emptyCols < priv.settings.minSpareCols && self.countCols() < priv.settings.maxCols; emptyCols++) {
          datamap.createCol();
        }
      }

      if (priv.settings.enterBeginsEditing) {
        for (; (((priv.settings.minRows || priv.settings.minSpareRows) && self.countRows() > priv.settings.minRows) && (priv.settings.minSpareRows && emptyRows > priv.settings.minSpareRows)); emptyRows--) {
          datamap.removeRow();
        }
      }

      if (priv.settings.enterBeginsEditing && !priv.settings.columns) {
        for (; (((priv.settings.minCols || priv.settings.minSpareCols) && self.countCols() > priv.settings.minCols) && (priv.settings.minSpareCols && emptyCols > priv.settings.minSpareCols)); emptyCols--) {
          datamap.removeCol();
        }
      }

      var rowCount = self.countRows();
      var colCount = self.countCols();

      if (rowCount === 0 || colCount === 0) {
        selection.deselect();
      }

      if (priv.selStart.exists()) {
        var selectionChanged;
        var fromRow = priv.selStart.row();
        var fromCol = priv.selStart.col();
        var toRow = priv.selEnd.row();
        var toCol = priv.selEnd.col();

        //if selection is outside, move selection to last row
        if (fromRow > rowCount - 1) {
          fromRow = rowCount - 1;
          selectionChanged = true;
          if (toRow > fromRow) {
            toRow = fromRow;
          }
        } else if (toRow > rowCount - 1) {
          toRow = rowCount - 1;
          selectionChanged = true;
          if (fromRow > toRow) {
            fromRow = toRow;
          }
        }

        //if selection is outside, move selection to last row
        if (fromCol > colCount - 1) {
          fromCol = colCount - 1;
          selectionChanged = true;
          if (toCol > fromCol) {
            toCol = fromCol;
          }
        } else if (toCol > colCount - 1) {
          toCol = colCount - 1;
          selectionChanged = true;
          if (fromCol > toCol) {
            fromCol = toCol;
          }
        }

        if (selectionChanged) {
          self.selectCell(fromRow, fromCol, toRow, toCol);
        }
      }
    },

    /**
     * Populate cells at position with 2d array
     * @param {Object} start Start selection position
     * @param {Array} input 2d array
     * @param {Object} [end] End selection position (only for drag-down mode)
     * @param {String} [source="populateFromArray"]
     * @return {Object|undefined} ending td in pasted area (only if any cell was changed)
     */
    populateFromArray: function (start, input, end, source) {
      var r, rlen, c, clen, setData = [], current = {};
      rlen = input.length;
      if (rlen === 0) {
        return false;
      }
      current.row = start.row;
      current.col = start.col;
      for (r = 0; r < rlen; r++) {
        if ((end && current.row > end.row) || (!priv.settings.minSpareRows && current.row > self.countRows() - 1) || (current.row >= priv.settings.maxRows)) {
          break;
        }
        current.col = start.col;
        clen = input[r] ? input[r].length : 0;
        for (c = 0; c < clen; c++) {
          if ((end && current.col > end.col) || (!priv.settings.minSpareCols && current.col > self.countCols() - 1) || (current.col >= priv.settings.maxCols)) {
            break;
          }
          if (self.getCellMeta(current.row, current.col).isWritable) {
            setData.push([current.row, current.col, input[r][c]]);
          }
          current.col++;
          if (end && c === clen - 1) {
            c = -1;
          }
        }
        current.row++;
        if (end && r === rlen - 1) {
          r = -1;
        }
      }
      self.setDataAtCell(setData, null, null, source || 'populateFromArray');
    },

    /**
     * Returns the top left (TL) and bottom right (BR) selection coordinates
     * @param {Object[]} coordsArr
     * @returns {Object}
     */
    getCornerCoords: function (coordsArr) {
      function mapProp(func, array, prop) {
        function getProp(el) {
          return el[prop];
        }

        if (Array.prototype.map) {
          return func.apply(Math, array.map(getProp));
        }
        return func.apply(Math, $.map(array, getProp));
      }

      return {
        TL: {
          row: mapProp(Math.min, coordsArr, "row"),
          col: mapProp(Math.min, coordsArr, "col")
        },
        BR: {
          row: mapProp(Math.max, coordsArr, "row"),
          col: mapProp(Math.max, coordsArr, "col")
        }
      };
    },

    /**
     * Returns array of td objects given start and end coordinates
     */
    getCellsAtCoords: function (start, end) {
      var corners = grid.getCornerCoords([start, end]);
      var r, c, output = [];
      for (r = corners.TL.row; r <= corners.BR.row; r++) {
        for (c = corners.TL.col; c <= corners.BR.col; c++) {
          output.push(self.view.getCellAtCoords({
            row: r,
            col: c
          }));
        }
      }
      return output;
    }
  };

  this.selection = selection = { //this public assignment is only temporary
    inProgress: false,

    /**
     * Sets inProgress to true. This enables onSelectionEnd and onSelectionEndByProp to function as desired
     */
    begin: function () {
      self.selection.inProgress = true;
    },

    /**
     * Sets inProgress to false. Triggers onSelectionEnd and onSelectionEndByProp
     */
    finish: function () {
      var sel = self.getSelected();
      self.rootElement.triggerHandler("selectionend.handsontable", sel);
      self.rootElement.triggerHandler("selectionendbyprop.handsontable", [sel[0], self.colToProp(sel[1]), sel[2], self.colToProp(sel[3])]);
      self.selection.inProgress = false;
    },

    isInProgress: function () {
      return self.selection.inProgress;
    },

    /**
     * Starts selection range on given td object
     * @param {Object} coords
     */
    setRangeStart: function (coords) {
      priv.selStart.coords(coords);
      selection.setRangeEnd(coords);
    },

    /**
     * Ends selection range on given td object
     * @param {Object} coords
     * @param {Boolean} [scrollToCell=true] If true, viewport will be scrolled to range end
     */
    setRangeEnd: function (coords, scrollToCell) {
      self.selection.begin();

      priv.selEnd.coords(coords);
      if (!priv.settings.multiSelect) {
        priv.selStart.coords(coords);
      }

      //set up current selection
      self.view.wt.selections.current.clear();
      self.view.wt.selections.current.add(priv.selStart.arr());

      //set up area selection
      self.view.wt.selections.area.clear();
      if (selection.isMultiple()) {
        self.view.wt.selections.area.add(priv.selStart.arr());
        self.view.wt.selections.area.add(priv.selEnd.arr());
      }

      //trigger handlers
      self.rootElement.triggerHandler("selection.handsontable", [priv.selStart.row(), priv.selStart.col(), priv.selEnd.row(), priv.selEnd.col()]);
      self.rootElement.triggerHandler("selectionbyprop.handsontable", [priv.selStart.row(), datamap.colToProp(priv.selStart.col()), priv.selEnd.row(), datamap.colToProp(priv.selEnd.col())]);
      if (scrollToCell !== false) {
        self.view.scrollViewport(coords);

        self.view.wt.draw(true); //these two lines are needed to fix scrolling viewport when cell dimensions are significantly bigger than assumed by Walkontable
        self.view.scrollViewport(coords);
      }
      selection.refreshBorders();
    },

    /**
     * Destroys editor, redraws borders around cells, prepares editor
     * @param {Boolean} revertOriginal
     * @param {Boolean} keepEditor
     */
    refreshBorders: function (revertOriginal, keepEditor) {
      if (!keepEditor) {
        editproxy.destroy(revertOriginal);
      }
      self.view.render();
      if (selection.isSelected() && !keepEditor) {
        editproxy.prepare();
      }
    },

    /**
     * Returns information if we have a multiselection
     * @return {Boolean}
     */
    isMultiple: function () {
      return !(priv.selEnd.col() === priv.selStart.col() && priv.selEnd.row() === priv.selStart.row());
    },

    /**
     * Selects cell relative to current cell (if possible)
     */
    transformStart: function (rowDelta, colDelta, force) {
      if (priv.selStart.row() + rowDelta > self.countRows() - 1) {
        if (force && priv.settings.minSpareRows > 0) {
          self.alter("insert_row", self.countRows());
        }
        else if (priv.settings.autoWrapCol && priv.selStart.col() + colDelta < self.countCols() - 1) {
          rowDelta = 1 - self.countRows();
          colDelta = 1;
        }
      }
      else if (priv.settings.autoWrapCol && priv.selStart.row() + rowDelta < 0 && priv.selStart.col() + colDelta >= 0) {
        rowDelta = self.countRows() - 1;
        colDelta = -1;
      }
      if (priv.selStart.col() + colDelta > self.countCols() - 1) {
        if (force && priv.settings.minSpareCols > 0) {
          self.alter("insert_col", self.countCols());
        }
        else if (priv.settings.autoWrapRow && priv.selStart.row() + rowDelta < self.countRows() - 1) {
          rowDelta = 1;
          colDelta = 1 - self.countCols();
        }
      }
      else if (priv.settings.autoWrapRow && priv.selStart.col() + colDelta < 0 && priv.selStart.row() + rowDelta >= 0) {
        rowDelta = -1;
        colDelta = self.countCols() - 1;
      }

      var totalRows = self.countRows();
      var totalCols = self.countCols();
      var coords = {
        row: (priv.selStart.row() + rowDelta),
        col: priv.selStart.col() + colDelta
      };

      if (coords.row < 0) {
        coords.row = 0;
      }
      else if (coords.row > 0 && coords.row >= totalRows) {
        coords.row = totalRows - 1;
      }

      if (coords.col < 0) {
        coords.col = 0;
      }
      else if (coords.col > 0 && coords.col >= totalCols) {
        coords.col = totalCols - 1;
      }

      selection.setRangeStart(coords);
    },

    /**
     * Sets selection end cell relative to current selection end cell (if possible)
     */
    transformEnd: function (rowDelta, colDelta) {
      if (priv.selEnd.exists()) {
        var totalRows = self.countRows();
        var totalCols = self.countCols();
        var coords = {
          row: priv.selEnd.row() + rowDelta,
          col: priv.selEnd.col() + colDelta
        };

        if (coords.row < 0) {
          coords.row = 0;
        }
        else if (coords.row > 0 && coords.row >= totalRows) {
          coords.row = totalRows - 1;
        }

        if (coords.col < 0) {
          coords.col = 0;
        }
        else if (coords.col > 0 && coords.col >= totalCols) {
          coords.col = totalCols - 1;
        }

        selection.setRangeEnd(coords);
      }
    },

    /**
     * Returns true if currently there is a selection on screen, false otherwise
     * @return {Boolean}
     */
    isSelected: function () {
      return priv.selEnd.exists();
    },

    /**
     * Returns true if coords is within current selection coords
     * @return {Boolean}
     */
    inInSelection: function (coords) {
      if (!selection.isSelected()) {
        return false;
      }
      var sel = grid.getCornerCoords([priv.selStart.coords(), priv.selEnd.coords()]);
      return (sel.TL.row <= coords.row && sel.BR.row >= coords.row && sel.TL.col <= coords.col && sel.BR.col >= coords.col);
    },

    /**
     * Deselects all selected cells
     */
    deselect: function () {
      if (!selection.isSelected()) {
        return;
      }
      self.selection.inProgress = false; //needed by HT inception
      priv.selEnd = new Handsontable.SelectionPoint(); //create new empty point to remove the existing one
      self.view.wt.selections.current.clear();
      self.view.wt.selections.area.clear();
      editproxy.destroy();
      selection.refreshBorders();
      self.rootElement.triggerHandler('deselect.handsontable');
    },

    /**
     * Select all cells
     */
    selectAll: function () {
      if (!priv.settings.multiSelect) {
        return;
      }
      selection.setRangeStart({
        row: 0,
        col: 0
      });
      selection.setRangeEnd({
        row: self.countRows() - 1,
        col: self.countCols() - 1
      }, false);
    },

    /**
     * Deletes data from selected cells
     */
    empty: function () {
      if (!selection.isSelected()) {
        return;
      }
      var corners = grid.getCornerCoords([priv.selStart.coords(), priv.selEnd.coords()]);
      var r, c, changes = [];
      for (r = corners.TL.row; r <= corners.BR.row; r++) {
        for (c = corners.TL.col; c <= corners.BR.col; c++) {
          if (self.getCellMeta(r, c).isWritable) {
            changes.push([r, c, '']);
          }
        }
      }
      self.setDataAtCell(changes);
    }
  };

  this.autofill = autofill = { //this public assignment is only temporary
    handle: null,

    /**
     * Create fill handle and fill border objects
     */
    init: function () {
      if (!autofill.handle) {
        autofill.handle = {};
      }
      else {
        autofill.handle.disabled = false;
      }
    },

    /**
     * Hide fill handle and fill border permanently
     */
    disable: function () {
      autofill.handle.disabled = true;
    },

    /**
     * Selects cells down to the last row in the left column, then fills down to that cell
     */
    selectAdjacent: function () {
      var select, data, r, maxR, c;

      if (selection.isMultiple()) {
        select = self.view.wt.selections.area.getCorners();
      }
      else {
        select = self.view.wt.selections.current.getCorners();
      }

      data = datamap.getAll();
      rows : for (r = select[2] + 1; r < self.countRows(); r++) {
        for (c = select[1]; c <= select[3]; c++) {
          if (data[r][c]) {
            break rows;
          }
        }
        if (!!data[r][select[1] - 1] || !!data[r][select[3] + 1]) {
          maxR = r;
        }
      }
      if (maxR) {
        self.view.wt.selections.fill.clear();
        self.view.wt.selections.fill.add([select[0], select[1]]);
        self.view.wt.selections.fill.add([maxR, select[3]]);
        autofill.apply();
      }
    },

    /**
     * Apply fill values to the area in fill border, omitting the selection border
     */
    apply: function () {
      var drag, select, start, end;

      autofill.handle.isDragged = 0;

      drag = self.view.wt.selections.fill.getCorners();
      if (!drag) {
        return;
      }

      self.view.wt.selections.fill.clear();

      if (selection.isMultiple()) {
        select = self.view.wt.selections.area.getCorners();
      }
      else {
        select = self.view.wt.selections.current.getCorners();
      }

      if (drag[0] === select[0] && drag[1] < select[1]) {
        start = {
          row: drag[0],
          col: drag[1]
        };
        end = {
          row: drag[2],
          col: select[1] - 1
        };
      }
      else if (drag[0] === select[0] && drag[3] > select[3]) {
        start = {
          row: drag[0],
          col: select[3] + 1
        };
        end = {
          row: drag[2],
          col: drag[3]
        };
      }
      else if (drag[0] < select[0] && drag[1] === select[1]) {
        start = {
          row: drag[0],
          col: drag[1]
        };
        end = {
          row: select[0] - 1,
          col: drag[3]
        };
      }
      else if (drag[2] > select[2] && drag[1] === select[1]) {
        start = {
          row: select[2] + 1,
          col: drag[1]
        };
        end = {
          row: drag[2],
          col: drag[3]
        };
      }

      if (start) {
        grid.populateFromArray(start, SheetClip.parse(datamap.getText(priv.selStart.coords(), priv.selEnd.coords())), end, 'autofill');

        selection.setRangeStart({row: drag[0], col: drag[1]});
        selection.setRangeEnd({row: drag[2], col: drag[3]});
      }
      /*else {
       //reset to avoid some range bug
       selection.refreshBorders();
       }*/
    },

    /**
     * Show fill border
     */
    showBorder: function (coords) {
      coords.row = coords[0];
      coords.col = coords[1];

      var corners = grid.getCornerCoords([priv.selStart.coords(), priv.selEnd.coords()]);
      if (priv.settings.fillHandle !== 'horizontal' && (corners.BR.row < coords.row || corners.TL.row > coords.row)) {
        coords = [coords.row, corners.BR.col];
      }
      else if (priv.settings.fillHandle !== 'vertical') {
        coords = [corners.BR.row, coords.col];
      }
      else {
        return; //wrong direction
      }

      self.view.wt.selections.fill.clear();
      self.view.wt.selections.fill.add([priv.selStart.coords().row, priv.selStart.coords().col]);
      self.view.wt.selections.fill.add([priv.selEnd.coords().row, priv.selEnd.coords().col]);
      self.view.wt.selections.fill.add(coords);
      self.view.render();
    }
  };

  editproxy = { //this public assignment is only temporary
    /**
     * Create input field
     */
    init: function () {
      function onCut() {
        selection.empty();
      }

      function onPaste(str) {
        self.rootElement.one("datachange.handsontable", function (event, changes, source) {
          if (changes.length) {
            var last = changes[changes.length - 1];
            selection.setRangeEnd({row: last[0], col: self.propToCol(last[1])});
          }
        });

        var input = str.replace(/^[\r\n]*/g, '').replace(/[\r\n]*$/g, ''), //remove newline from the start and the end of the input
          inputArray = SheetClip.parse(input),
          coords = grid.getCornerCoords([priv.selStart.coords(), priv.selEnd.coords()]);

        grid.populateFromArray(coords.TL, inputArray, {
          row: Math.max(coords.BR.row, inputArray.length - 1 + coords.TL.row),
          col: Math.max(coords.BR.col, inputArray[0].length - 1 + coords.TL.col)
        }, 'paste');
      }

      var $body = $(document.body);

      function onKeyDown(event) {
        if (priv.settings.beforeOnKeyDown) {
          priv.settings.beforeOnKeyDown.call(self, event);
        }

        if ($body.children('.context-menu-list:visible').length) {
          return;
        }

        if (event.keyCode === 17 || event.keyCode === 224 || event.keyCode === 91 || event.keyCode === 93) {
          //when CTRL is pressed, prepare selectable text in textarea
          //http://stackoverflow.com/questions/3902635/how-does-one-capture-a-macs-command-key-via-javascript
          editproxy.setCopyableText();
          return;
        }

        priv.lastKeyCode = event.keyCode;
        if (selection.isSelected()) {
          var ctrlDown = (event.ctrlKey || event.metaKey) && !event.altKey; //catch CTRL but not right ALT (which in some systems triggers ALT+CTRL)
          if (Handsontable.helper.isPrintableChar(event.keyCode) && ctrlDown) {
            if (event.keyCode === 65) { //CTRL + A
              selection.selectAll(); //select all cells
              editproxy.setCopyableText();
              event.preventDefault();
            }
            else if (event.keyCode === 89 || (event.shiftKey && event.keyCode === 90)) { //CTRL + Y or CTRL + SHIFT + Z
              priv.undoRedo && priv.undoRedo.redo();
            }
            else if (event.keyCode === 90) { //CTRL + Z
              priv.undoRedo && priv.undoRedo.undo();
            }
            return;
          }

          var rangeModifier = event.shiftKey ? selection.setRangeEnd : selection.setRangeStart;

          switch (event.keyCode) {
            case 38: /* arrow up */
              if (event.shiftKey) {
                selection.transformEnd(-1, 0);
              }
              else {
                selection.transformStart(-1, 0);
              }
              event.preventDefault();
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 9: /* tab */
              var tabMoves = typeof priv.settings.tabMoves === 'function' ? priv.settings.tabMoves(event) : priv.settings.tabMoves;
              if (event.shiftKey) {
                selection.transformStart(-tabMoves.row, -tabMoves.col); //move selection left
              }
              else {
                selection.transformStart(tabMoves.row, tabMoves.col, true); //move selection right (add a new column if needed)
              }
              event.preventDefault();
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 39: /* arrow right */
              if (event.shiftKey) {
                selection.transformEnd(0, 1);
              }
              else {
                selection.transformStart(0, 1);
              }
              event.preventDefault();
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 37: /* arrow left */
              if (event.shiftKey) {
                selection.transformEnd(0, -1);
              }
              else {
                selection.transformStart(0, -1);
              }
              event.preventDefault();
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 8: /* backspace */
            case 46: /* delete */
              selection.empty(event);
              event.preventDefault();
              break;

            case 40: /* arrow down */
              if (event.shiftKey) {
                selection.transformEnd(1, 0); //expanding selection down with shift
              }
              else {
                selection.transformStart(1, 0); //move selection down
              }
              event.preventDefault();
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 113: /* F2 */
              event.preventDefault(); //prevent Opera from opening Go to Page dialog
              break;

            case 13: /* return/enter */
              var enterMoves = typeof priv.settings.enterMoves === 'function' ? priv.settings.enterMoves(event) : priv.settings.enterMoves;
              if (event.shiftKey) {
                selection.transformStart(-enterMoves.row, -enterMoves.col); //move selection up
              }
              else {
                selection.transformStart(enterMoves.row, enterMoves.col, true); //move selection down (add a new row if needed)
              }
              event.preventDefault(); //don't add newline to field
              break;

            case 36: /* home */
              if (event.ctrlKey || event.metaKey) {
                rangeModifier({row: 0, col: priv.selStart.col()});
              }
              else {
                rangeModifier({row: priv.selStart.row(), col: 0});
              }
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 35: /* end */
              if (event.ctrlKey || event.metaKey) {
                rangeModifier({row: self.countRows() - 1, col: priv.selStart.col()});
              }
              else {
                rangeModifier({row: priv.selStart.row(), col: self.countCols() - 1});
              }
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 33: /* pg up */
              selection.transformStart(-self.countVisibleRows(), 0);
              self.view.wt.scrollVertical(-self.countVisibleRows());
              self.view.render();
              event.preventDefault(); //don't page up the window
              event.stopPropagation(); //required by HandsontableEditor
              break;

            case 34: /* pg down */
              selection.transformStart(self.countVisibleRows(), 0);
              self.view.wt.scrollVertical(self.countVisibleRows());
              self.view.render();
              event.preventDefault(); //don't page down the window
              event.stopPropagation(); //required by HandsontableEditor
              break;

            default:
              break;
          }
        }
      }

      self.copyPaste = new CopyPaste(self.rootElement[0]);
      self.copyPaste.onCut(onCut);
      self.copyPaste.onPaste(onPaste);
      self.rootElement.on('keydown.handsontable.' + self.guid, onKeyDown);
    },

    /**
     * Destroy current editor, if exists
     * @param {Boolean} revertOriginal
     */
    destroy: function (revertOriginal) {
      if (typeof priv.editorDestroyer === "function") {
        var destroyer = priv.editorDestroyer; //this copy is needed, otherwise destroyer can enter an infinite loop
        priv.editorDestroyer = null;
        destroyer(revertOriginal);
      }
    },

    /**
     * Prepares copyable text in the invisible textarea
     */
    setCopyableText: function () {
      var startRow = Math.min(priv.selStart.row(), priv.selEnd.row());
      var startCol = Math.min(priv.selStart.col(), priv.selEnd.col());
      var endRow = Math.max(priv.selStart.row(), priv.selEnd.row());
      var endCol = Math.max(priv.selStart.col(), priv.selEnd.col());
      var finalEndRow = Math.min(endRow, startRow + priv.settings.copyRowsLimit - 1);
      var finalEndCol = Math.min(endCol, startCol + priv.settings.copyColsLimit - 1);

      self.copyPaste.copyable(datamap.getText({row: startRow, col: startCol}, {row: finalEndRow, col: finalEndCol}));

      if ((endRow !== finalEndRow || endCol !== finalEndCol) && priv.settings.onCopyLimit) {
        priv.settings.onCopyLimit(endRow - startRow + 1, endCol - startCol + 1, priv.settings.copyRowsLimit, priv.settings.copyColsLimit);
      }
    },

    /**
     * Prepare text input to be displayed at given grid cell
     */
    prepare: function () {
      if (!self.getCellMeta(priv.selStart.row(), priv.selStart.col()).isWritable) {
        return;
      }

      if (priv.settings.asyncRendering) {
        self.registerTimeout('prepareFrame', function () {
          var TD = self.view.getCellAtCoords(priv.selStart.coords());
          if (Handsontable.helper.isDescendant(self.rootElement[0], document.activeElement)) {
            //we don't want to steal focus if it is outside HT (issue #408)
            TD.focus();
          }
          priv.editorDestroyer = self.view.applyCellTypeMethod('editor', TD, priv.selStart.row(), priv.selStart.col());
        }, 0);
      }
      else {
        var TD = self.view.getCellAtCoords(priv.selStart.coords());
        if (Handsontable.helper.isDescendant(self.rootElement[0], document.activeElement)) {
          //we don't want to steal focus if it is outside HT (issue #408)
          TD.focus();
        }
        priv.editorDestroyer = self.view.applyCellTypeMethod('editor', TD, priv.selStart.row(), priv.selStart.col());
      }
    }
  };

  this.init = function () {
    Handsontable.PluginHooks.run(self, 'beforeInit');
    editproxy.init();

    bindEvents();
    this.updateSettings(settings);
    this.view = new Handsontable.TableView(this);

    if (typeof priv.firstRun === 'object') {
      fireEvent('datachange.handsontable', priv.firstRun);
      priv.firstRun = false;
    }
    Handsontable.PluginHooks.run(self, 'afterInit');
  };

  function validateChanges(changes, source) {
    var validated = $.Deferred();
    var deferreds = [];

    //validate strict autocompletes
    var process = function (i) {
      var deferred = $.Deferred();
      deferreds.push(deferred);

      var originalVal = changes[i][3];
      var lowercaseVal = typeof originalVal === 'string' ? originalVal.toLowerCase() : null;

      return function (source) {
        var found = false;
        for (var s = 0, slen = source.length; s < slen; s++) {
          if (originalVal === source[s]) {
            found = true; //perfect match
            break;
          }
          else if (lowercaseVal === source[s].toLowerCase()) {
            changes[i][3] = source[s]; //good match, fix the case
            found = true;
            break;
          }
        }
        if (!found) {
          changes[i] = null;
        }
        deferred.resolve();
      }
    };

    for (var i = changes.length - 1; i >= 0; i--) {
      var cellProperties = self.getCellMeta(changes[i][0], datamap.propToCol(changes[i][1]));
      if (cellProperties.strict && cellProperties.source) {
        $.isFunction(cellProperties.source) ? cellProperties.source(changes[i][3], process(i)) : process(i)(cellProperties.source);
      }
    }

    $.when.apply($, deferreds).then(function () {
      for (var i = changes.length - 1; i >= 0; i--) {
        if (changes[i] === null) {
          changes.splice(i, 1);
        } else {
          var cellProperties = self.getCellMeta(changes[i][0], datamap.propToCol(changes[i][1]));

          if (cellProperties.dataType === 'number' && typeof changes[i][3] === 'string') {
            if (changes[i][3].length > 0 && /^[0-9\s]*[.]*[0-9]*$/.test(changes[i][3])) {
              changes[i][3] = numeral().unformat(changes[i][3] || '0'); //numeral cannot unformat empty string
            }
          }
        }
      }

      if (priv.settings.onBeforeChange && changes.length) {
        var result = priv.settings.onBeforeChange.apply(self.rootElement[0], [changes, source]);
        if (typeof result === 'function') {
          $.when(result).then(function () {
            validated.resolve();
          });
        }
        else {
          if (result === false) {
            changes.splice(0, changes.length); //invalidate all changes (remove everything from array)
          }
          validated.resolve();
        }
      }
      else {
        validated.resolve();
      }
    });

    return $.when(validated);
  }

  var fireEvent = function (name, params) {
    if (priv.settings.asyncRendering) {
      self.registerTimeout('fireEvent', function () {
        self.rootElement.triggerHandler(name, params);
      }, 0);
    }
    else {
      self.rootElement.triggerHandler(name, params);
    }
  };

  var bindEvents = function () {
    self.rootElement.on("datachange.handsontable", function (event, changes, source) {
      if (priv.settings.onChange) {
        priv.settings.onChange.apply(self.rootElement[0], [changes, source]);
      }
    });
    self.rootElement.on("selection.handsontable", function (event, row, col, endRow, endCol) {
      if (priv.settings.onSelection) {
        priv.settings.onSelection.apply(self.rootElement[0], [row, col, endRow, endCol]);
      }
    });
    self.rootElement.on("selectionbyprop.handsontable", function (event, row, prop, endRow, endProp) {
      if (priv.settings.onSelectionByProp) {
        priv.settings.onSelectionByProp.apply(self.rootElement[0], [row, prop, endRow, endProp]);
      }
    });
    self.rootElement.on("selectionend.handsontable", function (event, row, col, endRow, endCol) {
      if (priv.settings.onSelectionEnd) {
        priv.settings.onSelectionEnd.apply(self.rootElement[0], [row, col, endRow, endCol]);
      }
    });
    self.rootElement.on("selectionendbyprop.handsontable", function (event, row, prop, endRow, endProp) {
      if (priv.settings.onSelectionEndByProp) {
        priv.settings.onSelectionEndByProp.apply(self.rootElement[0], [row, prop, endRow, endProp]);
      }
    });
  };

  /**
   * Internal function to apply changes. Called after validateChanges
   * @param {Array} changes Array in form of [row, prop, oldValue, newValue]
   * @param {String} source String that identifies how this change will be described in changes array (useful in onChange callback)
   */
  function applyChanges(changes, source) {
    var i = 0
      , ilen = changes.length;

    if (!ilen) {
      return;
    }

    while (i < ilen) {
      if (priv.settings.minSpareRows) {
        while (changes[i][0] > self.countRows() - 1) {
          datamap.createRow();
        }
      }
      if (priv.dataType === 'array' && priv.settings.minSpareCols) {
        while (datamap.propToCol(changes[i][1]) > self.countCols() - 1) {
          datamap.createCol();
        }
      }
      datamap.set(changes[i][0], changes[i][1], changes[i][3]);
      i++;
    }
    self.forceFullRender = true; //used when data was changed
    grid.keepEmptyRows();
    selection.refreshBorders();
    fireEvent("datachange.handsontable", [changes, source || 'edit']);
  }

  function setDataInputToArray(arg0, arg1, arg2) {
    if (typeof arg0 === "object") { //is it an array of changes
      return arg0;
    }
    else if ($.isPlainObject(arg2)) { //backwards compatibility
      return value;
    }
    else {
      return [
        [arg0, arg1, arg2]
      ];
    }
  }

  /**
   * Set data at given cell
   * @public
   * @param {Number|Array} row or array of changes in format [[row, col, value], ...]
   * @param {Number} col
   * @param {String} value
   * @param {String} source String that identifies how this change will be described in changes array (useful in onChange callback)
   */
  this.setDataAtCell = function (row, col, value, source) {
    var input = setDataInputToArray(row, col, value)
      , i
      , ilen
      , changes = []
      , prop;

    for (i = 0, ilen = input.length; i < ilen; i++) {
      if (typeof input[i][1] !== 'number') {
        throw new Error('Method `setDataAtCell` accepts row and column number as its parameters. If you want to use object property name, use method `setDataAtRowProp`');
      }
      prop = datamap.colToProp(input[i][1]);
      changes.push([
        input[i][0],
        prop,
        datamap.get(input[i][0], prop),
        input[i][2]
      ]);
    }

    validateChanges(changes, source).then(function () {
      applyChanges(changes, source);
    });
  };


  /**
   * Set data at given row property
   * @public
   * @param {Number|Array} row or array of changes in format [[row, prop, value], ...]
   * @param {Number} prop
   * @param {String} value
   * @param {String} source String that identifies how this change will be described in changes array (useful in onChange callback)
   */
  this.setDataAtRowProp = function (row, prop, value, source) {
    var input = setDataInputToArray(row, prop, value)
      , i
      , ilen
      , changes = [];

    for (i = 0, ilen = input.length; i < ilen; i++) {
      changes.push([
        input[i][0],
        input[i][1],
        datamap.get(input[i][0], input[i][1]),
        input[i][2]
      ]);
    }

    validateChanges(changes, source).then(function () {
      applyChanges(changes, source);
    });
  };

  /**
   * Destroys current editor, renders and selects current cell. If revertOriginal != true, edited data is saved
   * @param {Boolean} revertOriginal
   */
  this.destroyEditor = function (revertOriginal) {
    selection.refreshBorders(revertOriginal);
  };

  /**
   * Populate cells at position with 2d array
   * @param {Object} start Start selection position
   * @param {Array} input 2d array
   * @param {Object} [end] End selection position (only for drag-down mode)
   * @param {String} [source="populateFromArray"]
   * @return {Object|undefined} ending td in pasted area (only if any cell was changed)
   */
  this.populateFromArray = function (start, input, end, source) {
    return grid.populateFromArray(start, input, end, source);
  };

  /**
   * Returns the top left (TL) and bottom right (BR) selection coordinates
   * @param {Object[]} coordsArr
   * @returns {Object}
   */
  this.getCornerCoords = function (coordsArr) {
    return grid.getCornerCoords(coordsArr);
  };

  /**
   * Returns current selection. Returns undefined if there is no selection.
   * @public
   * @return {Array} [`startRow`, `startCol`, `endRow`, `endCol`]
   */
  this.getSelected = function () { //https://github.com/warpech/jquery-handsontable/issues/44  //cjl
    if (selection.isSelected()) {
      return [priv.selStart.row(), priv.selStart.col(), priv.selEnd.row(), priv.selEnd.col()];
    }
  };

  /**
   * Render visible data
   * @public
   */
  this.render = function () {
    if (self.view) {
      self.forceFullRender = true; //used when data was changed
      selection.refreshBorders(null, true);
    }
  };

  /**
   * Load data from array
   * @public
   * @param {Array} data
   */
  this.loadData = function (data) {
    if (!(data instanceof Array)) {
      throw new Error("loadData only accepts array of objects or array of arrays (" + typeof data + " given)");
    }

    priv.isPopulated = false;
    priv.settings.data = data;
    if (priv.settings.dataSchema instanceof Array || data[0]  instanceof Array) {
      priv.dataType = 'array';
    }
    else if ($.isFunction(priv.settings.dataSchema)) {
      priv.dataType = 'function';
    }
    else {
      priv.dataType = 'object';
    }
    if (data[0]) {
      priv.duckDataSchema = datamap.recursiveDuckSchema(data[0]);
    }
    else {
      priv.duckDataSchema = {};
    }
    datamap.createMap();

    grid.keepEmptyRows();
    Handsontable.PluginHooks.run(self, 'afterLoadData');

    if (priv.firstRun) {
      priv.firstRun = [null, 'loadData'];
    }
    else {
      fireEvent('datachange.handsontable', [null, 'loadData']);
      self.render();
    }
    priv.isPopulated = true;
    self.clearUndo();
  };

  /**
   * Return the current data object (the same that was passed by `data` configuration option or `loadData` method). Optionally you can provide cell range `r`, `c`, `r2`, `c2` to get only a fragment of grid data
   * @public
   * @param {Number} r (Optional) From row
   * @param {Number} c (Optional) From col
   * @param {Number} r2 (Optional) To row
   * @param {Number} c2 (Optional) To col
   * @return {Array|Object}
   */
  this.getData = function (r, c, r2, c2) {
    if (typeof r === 'undefined') {
      return datamap.getAll();
    }
    else {
      return datamap.getRange({row: r, col: c}, {row: r2, col: c2});
    }
  };

  /**
   * Update settings
   * @public
   */
  this.updateSettings = function (settings) {
    var i;

    if (typeof settings.rows !== "undefined") {
      throw new Error("'rows' setting is no longer supported. do you mean startRows, minRows or maxRows?");
    }
    if (typeof settings.cols !== "undefined") {
      throw new Error("'cols' setting is no longer supported. do you mean startCols, minCols or maxCols?");
    }

    if (typeof settings.undo !== "undefined") {
      if (priv.undoRedo && settings.undo === false) {
        priv.undoRedo = null;
      }
      else if (!priv.undoRedo && settings.undo === true) {
        priv.undoRedo = new Handsontable.UndoRedo(self);
      }
    }

    for (i in settings) {
      if (i === 'data') {
        continue; //loadData will be triggered later
      }
      else if (settings.hasOwnProperty(i)) {
        priv.settings[i] = settings[i];

        //launch extensions
        if (Handsontable.extension[i]) {
          priv.extensions[i] = new Handsontable.extension[i](self, settings[i]);
        }
      }
    }

    if (settings.data === void 0 && priv.settings.data === void 0) {
      var data = [];
      var row;
      for (var r = 0, rlen = priv.settings.startRows; r < rlen; r++) {
        row = [];
        for (var c = 0, clen = priv.settings.startCols; c < clen; c++) {
          row.push(null);
        }
        data.push(row);
      }
      self.loadData(data); //data source created just now
    }
    else if (settings.data !== void 0) {
      self.loadData(settings.data); //data source given as option
    }
    else if (settings.columns !== void 0) {
      datamap.createMap();
    }

    if (typeof settings.fillHandle !== "undefined") {
      if (autofill.handle && settings.fillHandle === false) {
        autofill.disable();
      }
      else if (!autofill.handle && settings.fillHandle !== false) {
        autofill.init();
      }
    }

    grid.keepEmptyRows();
    if (self.view) {
      self.forceFullRender = true; //used when data was changed
      selection.refreshBorders(null, true);
    }
  };

  /**
   * Returns current settings object
   * @return {Object}
   */
  this.getSettings = function () {
    return priv.settings;
  };

  /**
   * Clears grid
   * @public
   */
  this.clear = function () {
    selection.selectAll();
    selection.empty();
  };

  /**
   * Return true if undo can be performed, false otherwise
   * @public
   */
  this.isUndoAvailable = function () {
    return priv.undoRedo && priv.undoRedo.isUndoAvailable();
  };

  /**
   * Return true if redo can be performed, false otherwise
   * @public
   */
  this.isRedoAvailable = function () {
    return priv.undoRedo && priv.undoRedo.isRedoAvailable();
  };

  /**
   * Undo last edit
   * @public
   */
  this.undo = function () {
    priv.undoRedo && priv.undoRedo.undo();
  };

  /**
   * Redo edit (used to reverse an undo)
   * @public
   */
  this.redo = function () {
    priv.undoRedo && priv.undoRedo.redo();
  };

  /**
   * Clears undo history
   * @public
   */
  this.clearUndo = function () {
    priv.undoRedo && priv.undoRedo.clear();
  };

  /**
   * Inserts or removes rows and columns
   * @param {String} action See grid.alter for possible values
   * @param {Number} index
   * @param {Number} amount
   * @public
   */
  this.alter = function (action, index, amount) {
    grid.alter(action, index, amount);
  };

  /**
   * Returns <td> element corresponding to params row, col
   * @param {Number} row
   * @param {Number} col
   * @public
   * @return {Element}
   */
  this.getCell = function (row, col) {
    return self.view.getCellAtCoords({row: row, col: col});
  };

  /**
   * Returns property name associated with column number
   * @param {Number} col
   * @public
   * @return {String}
   */
  this.colToProp = function (col) {
    return datamap.colToProp(col);
  };

  /**
   * Returns column number associated with property name
   * @param {String} prop
   * @public
   * @return {Number}
   */
  this.propToCol = function (prop) {
    return datamap.propToCol(prop);
  };

  /**
   * Return value at `row`, `col`
   * @param {Number} row
   * @param {Number} col
   * @public
   * @return value (mixed data type)
   */
  this.getDataAtCell = function (row, col) {
    return datamap.get(row, datamap.colToProp(col));
  };

  /**
   * Return value at `row`, `prop`
   * @param {Number} row
   * @param {Number} prop
   * @public
   * @return value (mixed data type)
   */
  this.getDataAtRowProp = function (row, prop) {
    return datamap.get(row, prop);
  };

  /**
   * Returns cell meta data object corresponding to params row, col
   * @param {Number} row
   * @param {Number} col
   * @public
   * @return {Object}
   */
  this.getCellMeta = function (row, col) {
    var cellProperties = $.extend(true, cellProperties, Handsontable.TextCell)
      , prop = datamap.colToProp(col)
      , i
      , type;

    if (priv.settings.columns) {
      cellProperties = $.extend(true, cellProperties, priv.settings.columns[col] || {});
    }
    if (priv.settings.cells) {
      cellProperties = $.extend(true, cellProperties, priv.settings.cells(row, col, prop) || {});
    }
    Handsontable.PluginHooks.run(self, 'beforeGetCellMeta', row, col, cellProperties);

    if (typeof cellProperties.type === 'string' && Handsontable.cellTypes[cellProperties.type]) {
      type = Handsontable.cellTypes[cellProperties.type];
    }
    else if (typeof cellProperties.type === 'object') {
      type = cellProperties.type;
    }

    if (type) {
      for (i in type) {
        if (type.hasOwnProperty(i)) {
          cellProperties[i] = type[i];
        }
      }
    }

    cellProperties.isWritable = !cellProperties.readOnly;
    Handsontable.PluginHooks.run(self, 'afterGetCellMeta', row, col, cellProperties);
    return cellProperties;
  };

  /**
   * Return array of row headers (if they are enabled). If param `row` given, return header at given row as string
   * @param {Number} row (Optional)
   * @return {Array|String}
   */
  this.getRowHeader = function (row) {
    if (Object.prototype.toString.call(priv.settings.rowHeaders) === '[object Array]' && priv.settings.rowHeaders[row] !== void 0) {
      return priv.settings.rowHeaders[row];
    }
    else if (typeof priv.settings.rowHeaders === 'function') {
      return priv.settings.rowHeaders(row);
    }
    else if (priv.settings.rowHeaders && typeof priv.settings.rowHeaders !== 'string' && typeof priv.settings.rowHeaders !== 'number') {
      return row + 1;
    }
    else {
      return priv.settings.rowHeaders;
    }
  };

  /**
   * Return column header at given col as HTML string
   * @param {Number} col
   * @param {HTMLElement} TH
   */
  this.getColHeader = function (col, TH) {
    col = Handsontable.PluginModifiers.run(self, 'col', col);
    var DIV = document.createElement('DIV');
    DIV.className = 'relative';
    if (priv.settings.columns && priv.settings.columns[col] && priv.settings.columns[col].title) {
      DIV.innerHTML = '<span class="colHeader">' + priv.settings.columns[col].title + '</span>';
    }
    else if (Object.prototype.toString.call(priv.settings.colHeaders) === '[object Array]' && priv.settings.colHeaders[col] !== void 0) {
      DIV.innerHTML = '<span class="colHeader">' + priv.settings.colHeaders[col] + '</span>';
    }
    else if (typeof priv.settings.colHeaders === 'function') {
      DIV.innerHTML = '<span class="colHeader">' + priv.settings.colHeaders(col) + '</span>';
    }
    else if (priv.settings.colHeaders && typeof priv.settings.colHeaders !== 'string' && typeof priv.settings.colHeaders !== 'number') {
      var dividend = col + 1;
      var columnLabel = '';
      var modulo;
      while (dividend > 0) {
        modulo = (dividend - 1) % 26;
        columnLabel = String.fromCharCode(65 + modulo) + columnLabel;
        dividend = parseInt((dividend - modulo) / 26, 10);
      }
      DIV.innerHTML = '<span class="colHeader">' + columnLabel + '</span>';
    }
    else {
      DIV.innerHTML = '<span class="colHeader">' + priv.settings.colHeaders + '</span>';
    }

    while (TH.firstChild) {
      TH.removeChild(TH.firstChild); //empty TH node
    }
    TH.appendChild(DIV);
    Handsontable.PluginHooks.run(self, 'afterGetColHeader', col, TH);
  };

  /**
   * Return column width
   * @param {Number} col
   * @return {Number}
   */
  this.getColWidth = function (col) {
    col = Handsontable.PluginModifiers.run(self, 'col', col);
    var response = {};
    if (priv.settings.columns && priv.settings.columns[col] && priv.settings.columns[col].width) {
      response.width = priv.settings.columns[col].width;
    }
    else if (Object.prototype.toString.call(priv.settings.colWidths) === '[object Array]' && priv.settings.colWidths[col] !== void 0) {
      response.width = priv.settings.colWidths[col];
    }
    else {
      response.width = 50;
    }
    Handsontable.PluginHooks.run(self, 'afterGetColWidth', col, response);
    return response.width;
  };

  /**
   * Return total number of rows in grid
   * @return {Number}
   */
  this.countRows = function () {
    return priv.settings.data.length;
  };

  /**
   * Return total number of columns in grid
   * @return {Number}
   */
  this.countCols = function () {
    if (priv.dataType === 'object' || priv.dataType === 'function') {
      if (priv.settings.columns && priv.settings.columns.length) {
        return priv.settings.columns.length;
      }
      else {
        return priv.colToProp.length;
      }
    }
    else if (priv.dataType === 'array') {
      if (priv.settings.columns && priv.settings.columns.length) {
        return priv.settings.columns.length;
      }
      else if (priv.settings.data && priv.settings.data[0] && priv.settings.data[0].length) {
        return priv.settings.data[0].length;
      }
      else {
        return 0;
      }
    }
  };

  /**
   * Return index of first visible row
   * @return {Number}
   */
  this.rowOffset = function () {
    return self.view.wt.getSetting('offsetRow');
  };

  /**
   * Return index of first visible column
   * @return {Number}
   */
  this.colOffset = function () {
    return self.view.wt.getSetting('offsetColumn');
  };

  /**
   * Return number of visible rows
   * @return {Number}
   */
  this.countVisibleRows = function () {
    return self.view.wt.getSetting('viewportRows');
  };

  /**
   * Return number of visible columns
   * @return {Number}
   */
  this.countVisibleCols = function () {
    return self.view.wt.getSetting('viewportColumns');
  };

  /**
   * Return number of empty rows
   * @return {Boolean} ending If true, will only count empty rows at the end of the data source
   */
  this.countEmptyRows = function (ending) {
    var i = self.countRows() - 1
      , empty = 0;
    while (i >= 0) {
      if (self.isEmptyRow(i)) {
        empty++;
      }
      else if (ending) {
        break;
      }
      i--;
    }
    return empty;
  };

  /**
   * Return number of empty columns
   * @return {Boolean} ending If true, will only count empty columns at the end of the data source row
   */
  this.countEmptyCols = function (ending) {
    if (self.countRows() < 1) {
      return 0;
    }

    var i = self.countCols() - 1
      , empty = 0;
    while (i >= 0) {
      if (self.isEmptyCol(i)) {
        empty++;
      }
      else if (ending) {
        break;
      }
      i--;
    }
    return empty;
  };

  /**
   * Return true if the row at the given index is empty, false otherwise
   * @param {Number} r Row index
   * @return {Boolean}
   */
  this.isEmptyRow = function (r) {
    if (priv.settings.isEmptyRow) {
      return priv.settings.isEmptyRow.call(this, r);
    }

    var val;
    for (var c = 0, clen = this.countCols(); c < clen; c++) {
      val = this.getDataAtCell(r, c);
      if (val !== '' && val !== null && typeof val !== 'undefined') {
        return false;
      }
    }
    return true;
  };

  /**
   * Return true if the column at the given index is empty, false otherwise
   * @param {Number} c Column index
   * @return {Boolean}
   */
  this.isEmptyCol = function (c) {
    if (priv.settings.isEmptyCol) {
      return priv.settings.isEmptyCol.call(this, c);
    }

    var val;
    for (var r = 0, rlen = this.countRows(); r < rlen; r++) {
      val = this.getDataAtCell(r, c);
      if (val !== '' && val !== null && typeof val !== 'undefined') {
        return false;
      }
    }
    return true;
  };

  /**
   * Selects cell on grid. Optionally selects range to another cell
   * @param {Number} row
   * @param {Number} col
   * @param {Number} [endRow]
   * @param {Number} [endCol]
   * @param {Boolean} [scrollToCell=true] If true, viewport will be scrolled to the selection
   * @public
   * @return {Boolean}
   */
  this.selectCell = function (row, col, endRow, endCol, scrollToCell) {
    if (typeof row !== 'number' || row < 0 || row >= self.countRows()) {
      return false;
    }
    if (typeof col !== 'number' || col < 0 || col >= self.countCols()) {
      return false;
    }
    if (typeof endRow !== "undefined") {
      if (typeof endRow !== 'number' || endRow < 0 || endRow >= self.countRows()) {
        return false;
      }
      if (typeof endCol !== 'number' || endCol < 0 || endCol >= self.countCols()) {
        return false;
      }
    }
    priv.selStart.coords({row: row, col: col});
    self.$table[0].focus(); //needed or otherwise prepare won't focus the cell. selectionSpec tests this (should move focus to selected cell)
    if (typeof endRow === "undefined") {
      selection.setRangeEnd({row: row, col: col}, scrollToCell);
    }
    else {
      selection.setRangeEnd({row: endRow, col: endCol}, scrollToCell);
    }

    self.selection.finish();
    return true;
  };

  this.selectCellByProp = function (row, prop, endRow, endProp, scrollToCell) {
    arguments[1] = datamap.propToCol(arguments[1]);
    if (typeof arguments[3] !== "undefined") {
      arguments[3] = datamap.propToCol(arguments[3]);
    }
    return self.selectCell.apply(self, arguments);
  };

  /**
   * Deselects current sell selection on grid
   * @public
   */
  this.deselectCell = function () {
    selection.deselect();
  };

  /**
   * Remove grid from DOM
   * @public
   */
  this.destroy = function () {
    self.clearTimeouts();
    if (self.view) { //in case HT is destroyed before initialization has finished
      self.view.wt.destroy();
    }
    self.rootElement.empty();
    self.rootElement.removeData('handsontable');
    self.rootElement.off('.handsontable');
    $(window).off('.' + self.guid);
    $(document.documentElement).off('.' + self.guid);
    Handsontable.PluginHooks.run(self, 'afterDestroy');
  };

  this.timeouts = {};

  /**
   * Sets timeout. Purpose of this method is to clear all known timeouts when `destroy` method is called
   * @public
   */
  this.registerTimeout = function (key, handle, ms) {
    clearTimeout(this.timeouts[key]);
    this.timeouts[key] = setTimeout(handle, ms || 0);
  };

  /**
   * Clears all known timeouts
   * @public
   */
  this.clearTimeouts = function () {
    for (var key in this.timeouts) {
      if (this.timeouts.hasOwnProperty(key)) {
        clearTimeout(this.timeouts[key]);
      }
    }
  };

  /**
   * Handsontable version
   */
  this.version = '0.8.16'; //inserted by grunt from package.json
};

var settings = {
  'data': void 0,
  'width': void 0,
  'height': void 0,
  'startRows': 5,
  'startCols': 5,
  'minRows': 0,
  'minCols': 0,
  'maxRows': Infinity,
  'maxCols': Infinity,
  'minSpareRows': 0,
  'minSpareCols': 0,
  'multiSelect': true,
  'fillHandle': true,
  'undo': true,
  'outsideClickDeselects': true,
  'enterBeginsEditing': true,
  'enterMoves': {row: 1, col: 0},
  'tabMoves': {row: 0, col: 1},
  'autoWrapRow': false,
  'autoWrapCol': false,
  'copyRowsLimit': 1000,
  'copyColsLimit': 1000,
  'currentRowClassName': void 0,
  'currentColClassName': void 0,
  'asyncRendering': true,
  'stretchH': 'hybrid',
  isEmptyRow: void 0,
  isEmptyCol: void 0
};

$.fn.handsontable = function (action) {
  var i, ilen, args, output = [], userSettings;
  if (typeof action !== 'string') { //init
    userSettings = action || {};
    return this.each(function () {
      var $this = $(this);
      if ($this.data("handsontable")) {
        instance = $this.data("handsontable");
        instance.updateSettings(userSettings);
      }
      else {
        var currentSettings = $.extend(true, {}, settings), instance;
        for (i in userSettings) {
          if (userSettings.hasOwnProperty(i)) {
            currentSettings[i] = userSettings[i];
          }
        }
        instance = new Handsontable.Core($this, currentSettings);
        $this.data("handsontable", instance);
        instance.init();
      }
    });
  }
  else {
    args = [];
    if (arguments.length > 1) {
      for (i = 1, ilen = arguments.length; i < ilen; i++) {
        args.push(arguments[i]);
      }
    }
    this.each(function () {
      var instance = $(this).data("handsontable");
      if (instance) {
        output = instance[action].apply(this, args);
      }
    });
    return output;
  }
};
/**
 * Handsontable TableView constructor
 * @param {Object} instance
 */
Handsontable.TableView = function (instance) {
  var that = this;
  var $window = $(window);

  this.instance = instance;
  var settings = this.instance.getSettings();

  instance.rootElement.data('originalStyle', instance.rootElement.attr('style')); //needed to retrieve original style in jsFiddle link generator in HT examples. may be removed in future versions
  instance.rootElement.addClass('handsontable');
  var $table = $('<table class="htCore"><thead></thead><tbody></tbody></table>');

  instance.$table = $table;
  instance.rootElement.prepend($table);

  this.overflow = instance.rootElement.css('overflow');
  if ((settings.width || settings.height) && !(this.overflow === 'scroll' || this.overflow === 'auto')) {
    this.overflow = 'auto';
  }
  if (this.overflow === 'scroll' || this.overflow === 'auto') {
    instance.rootElement[0].style.overflow = 'visible';
    //instance.rootElement[0].style.overflow = 'hidden';
  }
  this.determineContainerSize();
  //instance.rootElement[0].style.height = '';
  //instance.rootElement[0].style.width = '';

  $(document.documentElement).on('keyup.' + instance.guid, function (event) {
    if (instance.selection.isInProgress() && !event.shiftKey) {
      instance.selection.finish();
    }
  });

  var isMouseDown
    , dragInterval;

  $(document.documentElement).on('mouseup.' + instance.guid, function (event) {
    if (instance.selection.isInProgress() && event.which === 1) { //is left mouse button
      instance.selection.finish();
    }

    isMouseDown = false;
    clearInterval(dragInterval);
    dragInterval = null;

    if (instance.autofill.handle && instance.autofill.handle.isDragged) {
      if (instance.autofill.handle.isDragged > 1) {
        instance.autofill.apply();
      }
      instance.autofill.handle.isDragged = 0;
    }
  });

  $(document.documentElement).on('mousedown.' + instance.guid, function (event) {
    var next = event.target;

    if (next !== that.wt.wtTable.spreader) { //immediate click on "spreader" means click on the right side of vertical scrollbar
      while (next !== null && next !== document.documentElement) {
        if (next === instance.rootElement[0] || next.id === 'context-menu-layer' || $(next).is('.context-menu-list') || $(next).is('.typeahead li')) {
          return; //click inside container
        }
        next = next.parentNode;
      }
    }

    if (that.instance.getSettings().outsideClickDeselects) {
      that.instance.deselectCell();
    }
    else {
      that.instance.destroyEditor();
    }
  });

  $table.on('selectstart', function (event) {
    //https://github.com/warpech/jquery-handsontable/issues/160
    //selectstart is IE only event. Prevent text from being selected when performing drag down in IE8
    event.preventDefault();
  });

  $table.on('mouseenter', function () {
    if (dragInterval) { //if dragInterval was set (that means mouse was really outside of table, not over an element that is outside of <table> in DOM
      clearInterval(dragInterval);
      dragInterval = null;
    }
  });

  $table.on('mouseleave', function (event) {
    if (!(isMouseDown || (instance.autofill.handle && instance.autofill.handle.isDragged))) {
      return;
    }

    var tolerance = 1 //this is needed because width() and height() contains stuff like cell borders
      , offset = that.wt.wtDom.offset($table[0])
      , offsetTop = offset.top + tolerance
      , offsetLeft = offset.left + tolerance
      , width = that.containerWidth - that.wt.getSetting('scrollbarWidth') - 2 * tolerance
      , height = that.containerHeight - that.wt.getSetting('scrollbarHeight') - 2 * tolerance
      , method
      , row = 0
      , col = 0
      , dragFn;

    if (event.pageY < offsetTop) { //top edge crossed
      row = -1;
      method = 'scrollVertical';
    }
    else if (event.pageY >= offsetTop + height) { //bottom edge crossed
      row = 1;
      method = 'scrollVertical';
    }
    else if (event.pageX < offsetLeft) { //left edge crossed
      col = -1;
      method = 'scrollHorizontal';
    }
    else if (event.pageX >= offsetLeft + width) { //right edge crossed
      col = 1;
      method = 'scrollHorizontal';
    }

    if (method) {
      dragFn = function () {
        if (isMouseDown || (instance.autofill.handle && instance.autofill.handle.isDragged)) {
          //instance.selection.transformEnd(row, col);
          that.wt[method](row + col).draw();
        }
      };
      dragFn();
      dragInterval = setInterval(dragFn, 100);
    }
  });

  var clearTextSelection = function () {
    //http://stackoverflow.com/questions/3169786/clear-text-selection-with-javascript
    if (window.getSelection) {
      if (window.getSelection().empty) {  // Chrome
        window.getSelection().empty();
      } else if (window.getSelection().removeAllRanges) {  // Firefox
        window.getSelection().removeAllRanges();
      }
    } else if (document.selection) {  // IE?
      document.selection.empty();
    }
  };

  var walkontableConfig = {
    table: $table[0],
    async: settings.asyncRendering,
    stretchH: settings.stretchH,
    data: instance.getDataAtCell,
    totalRows: instance.countRows,
    totalColumns: instance.countCols,
    offsetRow: 0,
    offsetColumn: 0,
    displayRows: null,
    displayColumns: null,
    width: this.containerWidth,
    height: this.containerHeight,
    frozenColumns: settings.rowHeaders ? [instance.getRowHeader] : null,
    columnHeaders: settings.colHeaders ? instance.getColHeader : null,
    columnWidth: instance.getColWidth,
    cellRenderer: function (row, column, TD) {
      that.applyCellTypeMethod('renderer', TD, row, column);
    },
    selections: {
      current: {
        className: 'current',
        highlightRowClassName: settings.currentRowClassName,
        highlightColumnClassName: settings.currentColClassName,
        border: {
          width: 2,
          color: '#5292F7',
          style: 'solid',
          cornerVisible: function () {
            return settings.fillHandle && !that.isCellEdited() && !instance.selection.isMultiple()
          }
        }
      },
      area: {
        className: 'area',
        highlightRowClassName: settings.currentRowClassName,
        highlightColumnClassName: settings.currentColClassName,
        border: {
          width: 1,
          color: '#89AFF9',
          style: 'solid',
          cornerVisible: function () {
            return settings.fillHandle && !that.isCellEdited() && instance.selection.isMultiple()
          }
        }
      },
      fill: {
        className: 'fill',
        border: {
          width: 1,
          color: 'red',
          style: 'solid'
        }
      }
    },
    onCellMouseDown: function (event, coords, TD) {
      isMouseDown = true;
      var coordsObj = {row: coords[0], col: coords[1]};
      if (event.button === 2 && instance.selection.inInSelection(coordsObj)) { //right mouse button
        //do nothing
      }
      else if (event.shiftKey) {
        instance.selection.setRangeEnd(coordsObj);
      }
      else {
        instance.selection.setRangeStart(coordsObj);
      }
      TD.focus();
      event.preventDefault();
      clearTextSelection();

      if (settings.afterOnCellMouseDown) {
        settings.afterOnCellMouseDown.call(that.instance, event, coords, TD);
      }
    },
    onCellMouseOver: function (event, coords, TD) {
      var coordsObj = {row: coords[0], col: coords[1]};
      if (isMouseDown) {
        instance.selection.setRangeEnd(coordsObj);
      }
      else if (instance.autofill.handle && instance.autofill.handle.isDragged) {
        instance.autofill.handle.isDragged++;
        instance.autofill.showBorder(coords);
      }
    },
    onCellCornerMouseDown: function (event) {
      instance.autofill.handle.isDragged = 1;
      event.preventDefault();
    },
    onCellCornerDblClick: function () {
      instance.autofill.selectAdjacent();
    }
  };

  Handsontable.PluginHooks.run(this.instance, 'walkontableConfig', walkontableConfig);

  this.wt = new Walkontable(walkontableConfig);
  this.instance.forceFullRender = true; //used when data was changed
  this.render();

  var lastContainerWidth = that.containerWidth;
  var lastContainerHeight = that.containerHeight;

  $window.on('resize.' + instance.guid, function () {
    that.instance.registerTimeout('resizeTimeout', function () {
      that.determineContainerSize();
      var newContainerWidth = that.containerWidth;
      var newContainerHeight = that.containerHeight;

      if (lastContainerWidth !== newContainerWidth || lastContainerHeight !== newContainerHeight) {
        that.wt.update('width', newContainerWidth);
        that.wt.update('height', newContainerHeight);
        that.instance.forceFullRender = true;
        that.render();
        lastContainerWidth = newContainerWidth;
        lastContainerHeight = newContainerHeight;
      }
    }, 60);
  });

  $(that.wt.wtTable.spreader).on('mousedown.handsontable, contextmenu.handsontable', function (event) {
    if (event.target === that.wt.wtTable.spreader && event.which === 3) { //right mouse button exactly on spreader means right clickon the right hand side of vertical scrollbar
      event.stopPropagation();
    }
  });

  $table[0].focus(); //otherwise TextEditor tests do not pass in IE8
};

Handsontable.TableView.prototype.isCellEdited = function () {
  return (this.instance.textEditor && this.instance.textEditor.isCellEdited) || (this.instance.autocompleteEditor && this.instance.autocompleteEditor.isCellEdited) || (this.instance.handsontableEditor && this.instance.handsontableEditor.isCellEdited);
};

Handsontable.TableView.prototype.determineContainerSize = function () {
  var settings = this.instance.getSettings();

  this.containerWidth = typeof settings.width === 'function' ? settings.width() : settings.width;
  this.containerHeight = typeof settings.height === 'function' ? settings.height() : settings.height;

  var computedWidth = this.instance.rootElement.width();
  var computedHeight = this.instance.rootElement.height();

  if (settings.width === void 0 && computedWidth > 0) {
    this.containerWidth = computedWidth;
  }

  if (this.overflow === 'scroll' || this.overflow === 'auto') {
    if (settings.height === void 0 && computedHeight > 0) {
      this.containerHeight = computedHeight;
    }

    if (this.instance.rootElement[0].style.height === '') {
      if (this.wt && this.wt.wtScroll.wtScrollbarV.visible) {
        if (typeof this.containerHeight === 'number') { //TODO move this to Handsontable, then this typeof can be removed
          this.containerHeight += this.wt.getSetting('scrollbarHeight');
        }
      }
    }
  }
};

Handsontable.TableView.prototype.render = function () {
  if (this.instance.forceFullRender) {
    Handsontable.PluginHooks.run(this.instance, 'beforeRender');
  }
  this.wt.draw(!this.instance.forceFullRender);
  this.instance.rootElement.triggerHandler('render.handsontable');
  if (this.instance.forceFullRender) {
    Handsontable.PluginHooks.run(this.instance, 'afterRender');
  }
  this.instance.forceFullRender = false;
};

Handsontable.TableView.prototype.applyCellTypeMethod = function (methodName, td, row, col) {
  var prop = this.instance.colToProp(col)
    , cellProperties = this.instance.getCellMeta(row, col);
  if (cellProperties[methodName]) {
    return cellProperties[methodName](this.instance, td, row, col, prop, this.instance.getDataAtRowProp(row, prop), cellProperties);
  }
};

/**
 * Returns td object given coordinates
 */
Handsontable.TableView.prototype.getCellAtCoords = function (coords) {
  var td = this.wt.wtTable.getCell([coords.row, coords.col]);
  if (td < 0) { //there was an exit code (cell is out of bounds)
    return null;
  }
  else {
    return td;
  }
};

/**
 * Scroll viewport to selection
 * @param coords
 */
Handsontable.TableView.prototype.scrollViewport = function (coords) {
  this.wt.scrollViewport([coords.row, coords.col]);
};
/**
 * Returns true if keyCode represents a printable character
 * @param {Number} keyCode
 * @return {Boolean}
 */
Handsontable.helper.isPrintableChar = function (keyCode) {
  return ((keyCode == 32) || //space
    (keyCode >= 48 && keyCode <= 57) || //0-9
    (keyCode >= 96 && keyCode <= 111) || //numpad
    (keyCode >= 186 && keyCode <= 192) || //;=,-./`
    (keyCode >= 219 && keyCode <= 222) || //[]{}\|"'
    keyCode >= 226 || //special chars (229 for Asian chars)
    (keyCode >= 65 && keyCode <= 90)); //a-z
};

/**
 * Converts a value to string
 * @param value
 * @return {String}
 */
Handsontable.helper.stringify = function (value) {
  switch (typeof value) {
    case 'string':
    case 'number':
      return value + '';
      break;

    case 'object':
      if (value === null) {
        return '';
      }
      else {
        return value.toString();
      }
      break;

    case 'undefined':
      return '';
      break;

    default:
      return value.toString();
  }
};

// Remove childs function
// WARNING - this doesn't unload events and data attached by jQuery
// http://jsperf.com/jquery-html-vs-empty-vs-innerhtml/9
Handsontable.helper.empty = function (element) {
  var child;
  while (child = element.lastChild) {
    element.removeChild(child);
  }
};


/**
 * Checks if child is a descendant of given parent node
 * http://stackoverflow.com/questions/2234979/how-to-check-in-javascript-if-one-element-is-a-child-of-another
 * @param parent
 * @param child
 * @returns {boolean}
 */
Handsontable.helper.isDescendant = function (parent, child) {
  var node = child.parentNode;
  while (node != null) {
    if (node == parent) {
      return true;
    }
    node = node.parentNode;
  }
  return false;
};

/**
 * Generates a random hex string. Used as namespace for Handsontable instance events.
 * @return {String} - 16 character random string: "92b1bfc74ec4"
 */
Handsontable.helper.randomString = function () {
  function s4() {
    return Math.floor((1 + Math.random()) * 0x10000)
      .toString(16)
      .substring(1);
  };

  return s4() + s4() + s4() + s4();
};

/**
 * Handsontable UndoRedo class
 */
Handsontable.UndoRedo = function (instance) {
  var that = this;
  this.instance = instance;
  this.clear();
  instance.rootElement.on("datachange.handsontable", function (event, changes, origin) {
    if (origin !== 'undo' && origin !== 'redo') {
      that.add(changes);
    }
  });
};

/**
 * Undo operation from current revision
 */
Handsontable.UndoRedo.prototype.undo = function () {
  var i, ilen;
  if (this.isUndoAvailable()) {
    var setData = $.extend(true, [], this.data[this.rev]);
    for (i = 0, ilen = setData.length; i < ilen; i++) {
      setData[i].splice(3, 1);
    }
    this.instance.setDataAtRowProp(setData, null, null, 'undo');
    this.rev--;
  }
};

/**
 * Redo operation from current revision
 */
Handsontable.UndoRedo.prototype.redo = function () {
  var i, ilen;
  if (this.isRedoAvailable()) {
    this.rev++;
    var setData = $.extend(true, [], this.data[this.rev]);
    for (i = 0, ilen = setData.length; i < ilen; i++) {
      setData[i].splice(2, 1);
    }
    this.instance.setDataAtRowProp(setData, null, null, 'redo');
  }
};

/**
 * Returns true if undo point is available
 * @return {Boolean}
 */
Handsontable.UndoRedo.prototype.isUndoAvailable = function () {
  return (this.rev >= 0);
};

/**
 * Returns true if redo point is available
 * @return {Boolean}
 */
Handsontable.UndoRedo.prototype.isRedoAvailable = function () {
  return (this.rev < this.data.length - 1);
};

/**
 * Add new history poins
 * @param changes
 */
Handsontable.UndoRedo.prototype.add = function (changes) {
  this.rev++;
  this.data.splice(this.rev); //if we are in point abcdef(g)hijk in history, remove everything after (g)
  this.data.push(changes);
};

/**
 * Clears undo history
 */
Handsontable.UndoRedo.prototype.clear = function () {
  this.data = [];
  this.rev = -1;
};
Handsontable.SelectionPoint = function () {
  this._row = null; //private use intended
  this._col = null;
};

Handsontable.SelectionPoint.prototype.exists = function () {
  return (this._row !== null);
};

Handsontable.SelectionPoint.prototype.row = function (val) {
  if (val !== void 0) {
    this._row = val;
  }
  return this._row;
};

Handsontable.SelectionPoint.prototype.col = function (val) {
  if (val !== void 0) {
    this._col = val;
  }
  return this._col;
};

Handsontable.SelectionPoint.prototype.coords = function (coords) {
  if (coords !== void 0) {
    this._row = coords.row;
    this._col = coords.col;
  }
  return {
    row: this._row,
    col: this._col
  }
};

Handsontable.SelectionPoint.prototype.arr = function (arr) {
  if (arr !== void 0) {
    this._row = arr[0];
    this._col = arr[1];
  }
  return [this._row, this._col]
};
/**
 * Default text renderer
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Value to render (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.TextRenderer = function (instance, td, row, col, prop, value, cellProperties) {
  var escaped = Handsontable.helper.stringify(value);
  escaped = escaped.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, "&quot;").replace(/'/g, "&#039;"); //escape html special chars
  td.innerHTML = escaped.replace(/\n/g, '<br/>');
};
/**
 * Autocomplete renderer
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Value to render (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.AutocompleteRenderer = function (instance, td, row, col, prop, value, cellProperties) {
  var $td = $(td);
  var $text = $('<div class="htAutocomplete"></div>');
  var $arrow = $('<div class="htAutocompleteArrow">&#x25BC;</div>');

  $arrow.mouseup(function (event) {
    instance.view.wt.getSetting('onCellDblClick');
  });

  Handsontable.TextCell.renderer(instance, $text[0], row, col, prop, value, cellProperties);

  if ($text.html() === '') {
    $text.html('&nbsp;');
  }

  $text.append($arrow);
  $td.empty().append($text);
};
/**
 * Checkbox renderer
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Value to render (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.CheckboxRenderer = function (instance, td, row, col, prop, value, cellProperties) {
  if (typeof cellProperties.checkedTemplate === "undefined") {
    cellProperties.checkedTemplate = true;
  }
  if (typeof cellProperties.uncheckedTemplate === "undefined") {
    cellProperties.uncheckedTemplate = false;
  }
  if (value === cellProperties.checkedTemplate || value === Handsontable.helper.stringify(cellProperties.checkedTemplate)) {
    td.innerHTML = "<input type='checkbox' checked autocomplete='no'>";
  }
  else if (value === cellProperties.uncheckedTemplate || value === Handsontable.helper.stringify(cellProperties.uncheckedTemplate)) {
    td.innerHTML = "<input type='checkbox' autocomplete='no'>";
  }
  else if (value === null) { //default value
    td.innerHTML = "<input type='checkbox' autocomplete='no' style='opacity: 0.5'>";
  }
  else {
    td.innerHTML = "#bad value#";
  }

  var $input = $(td.getElementsByTagName('input')[0]);
  $input.mousedown(function (event) {
    if (!this.checked) {
      instance.setDataAtRowProp(row, prop, cellProperties.checkedTemplate);
    }
    else {
      instance.setDataAtRowProp(row, prop, cellProperties.uncheckedTemplate);
    }
    event.stopPropagation(); //otherwise can confuse mousedown handler
  });

  $input.mouseup(function (event) {
    event.stopPropagation(); //otherwise can confuse dblclick handler
  });

  return td;
};
/**
 * Numeric cell renderer
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Value to render (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.NumericRenderer = function (instance, td, row, col, prop, value, cellProperties) {
  if (typeof value === 'number') {
    if (typeof cellProperties.language !== 'undefined') {
      numeral.language(cellProperties.language)
    }
    td.innerHTML = numeral(value).format(cellProperties.format || '0'); //docs: http://numeraljs.com/
    td.className = 'htNumeric';
  }
  else {
    Handsontable.TextRenderer(instance, td, row, col, prop, value, cellProperties);
  }
};
function HandsontableTextEditorClass(instance) {
  if (instance) {
    this.isCellEdited = false;
    this.instance = instance;
    this.createElements();
    this.bindEvents();
  }
}

HandsontableTextEditorClass.prototype.createElements = function () {

  var style;

  this.TEXTAREA = $('<textarea class="handsontableInput">');

  style = this.TEXTAREA[0].style;
  style.width = 0;
  style.height = 0;

  this.TEXTAREA_PARENT = $('<div class="handsontableInputHolder">').append(this.TEXTAREA);

  style = this.TEXTAREA_PARENT[0].style;
  style.top = 0;
  style.left = 0;
  style.display = 'none';

  this.instance.rootElement.append(this.TEXTAREA_PARENT);

  var that = this;
  Handsontable.PluginHooks.push('afterRender', function () {
    that.instance.registerTimeout('refresh_editor_dimensions', function () {
      that.refreshDimensions();
    }, 0);
  });
};

HandsontableTextEditorClass.prototype.bindEvents = function () {
  var that = this;
  this.TEXTAREA_PARENT.off('.editor').on('keydown.editor', function (event) {
    //if we are here then isCellEdited === true

    var ctrlDown = (event.ctrlKey || event.metaKey) && !event.altKey; //catch CTRL but not right ALT (which in some systems triggers ALT+CTRL)

    if (event.keyCode === 17 || event.keyCode === 224 || event.keyCode === 91 || event.keyCode === 93) {
      //when CTRL or its equivalent is pressed and cell is edited, don't prepare selectable text in textarea
      event.stopImmediatePropagation();
      return;
    }

    switch (event.keyCode) {
      case 38: /* arrow up */
      case 40: /* arrow down */
        that.finishEditing(false);
        break;

      case 9: /* tab */
        that.finishEditing(false);
        event.preventDefault();
        break;

      case 39: /* arrow right */
        if (that.getCaretPosition(that.TEXTAREA[0]) === that.TEXTAREA.val().length) {
          that.finishEditing(false);
        }
        else {
          event.stopImmediatePropagation();
        }
        break;

      case 37: /* arrow left */
        if (that.getCaretPosition(that.TEXTAREA[0]) === 0) {
          that.finishEditing(false);
        }
        else {
          event.stopImmediatePropagation();
        }
        break;

      case 27: /* ESC */
        that.instance.destroyEditor(true);
        event.stopImmediatePropagation();
        break;

      case 13: /* return/enter */
        var selected = that.instance.getSelected();
        var isMultipleSelection = !(selected[0] === selected[2] && selected[1] === selected[3]);
        if ((event.ctrlKey && !isMultipleSelection) || event.altKey) { //if ctrl+enter or alt+enter, add new line
          that.TEXTAREA.val(that.TEXTAREA.val() + '\n');
          that.TEXTAREA[0].focus();
          event.stopImmediatePropagation();
        }
        else {
          that.finishEditing(false, ctrlDown);
        }
        event.preventDefault(); //don't add newline to field
        break;

      default:
        event.stopImmediatePropagation(); //backspace, delete, home, end, CTRL+A, CTRL+C, CTRL+V, CTRL+X should only work locally when cell is edited (not in table context)
        break;
    }
  });
};

HandsontableTextEditorClass.prototype.bindTemporaryEvents = function (td, row, col, prop, value, cellProperties) {
  this.TD = td;
  this.row = row;
  this.col = col;
  this.prop = prop;
  this.originalValue = value;
  this.cellProperties = cellProperties;

  var that = this;

  this.instance.$table.on('keydown.editor', function (event) {
    var ctrlDown = (event.ctrlKey || event.metaKey) && !event.altKey; //catch CTRL but not right ALT (which in some systems triggers ALT+CTRL)
    if (!that.isCellEdited) {
      if (Handsontable.helper.isPrintableChar(event.keyCode)) {
        if (!ctrlDown) { //disregard CTRL-key shortcuts
          that.beginEditing(row, col, prop);
        }
      }
      else if (event.keyCode === 113) { //f2
        that.beginEditing(row, col, prop, true); //show edit field
        event.stopImmediatePropagation();
        event.preventDefault(); //prevent Opera from opening Go to Page dialog
      }
      else if (event.keyCode === 13 && that.instance.getSettings().enterBeginsEditing) { //enter
        var selected = that.instance.getSelected();
        var isMultipleSelection = !(selected[0] === selected[2] && selected[1] === selected[3]);
        if ((ctrlDown && !isMultipleSelection) || event.altKey) { //if ctrl+enter or alt+enter, add new line
          that.beginEditing(row, col, prop, true, '\n'); //show edit field
        }
        else {
          that.beginEditing(row, col, prop, true); //show edit field
        }
        event.preventDefault(); //prevent new line at the end of textarea
        event.stopImmediatePropagation();
      }
    }
  });

  function onDblClick() {
    that.beginEditing(row, col, prop, true);
  }

  this.instance.view.wt.update('onCellDblClick', onDblClick);
};

HandsontableTextEditorClass.prototype.unbindTemporaryEvents = function () {
  this.instance.$table.off(".editor");
  this.instance.view.wt.update('onCellDblClick', null);
};

/**
 * Returns caret position in edit proxy
 * @author http://stackoverflow.com/questions/263743/how-to-get-caret-position-in-textarea
 * @return {Number}
 */
HandsontableTextEditorClass.prototype.getCaretPosition = function (el) {
  if (el.selectionStart) {
    return el.selectionStart;
  }
  else if (document.selection) {
    el.focus();
    var r = document.selection.createRange();
    if (r == null) {
      return 0;
    }
    var re = el.createTextRange(),
      rc = re.duplicate();
    re.moveToBookmark(r.getBookmark());
    rc.setEndPoint('EndToStart', re);
    return rc.text.length;
  }
  return 0;
};

/**
 * Sets caret position in edit proxy
 * @author http://blog.vishalon.net/index.php/javascript-getting-and-setting-caret-position-in-textarea/
 * @param {Number}
 */
HandsontableTextEditorClass.prototype.setCaretPosition = function (el, pos) {
  if (el.setSelectionRange) {
    el.focus();
    el.setSelectionRange(pos, pos);
  }
  else if (el.createTextRange) {
    var range = el.createTextRange();
    range.collapse(true);
    range.moveEnd('character', pos);
    range.moveStart('character', pos);
    range.select();
  }
};

HandsontableTextEditorClass.prototype.beginEditing = function (row, col, prop, useOriginalValue, suffix) {
  if (this.isCellEdited) {
    return;
  }
  this.isCellEdited = true;
  this.row = row;
  this.col = col;
  this.prop = prop;

  var coords = {row: row, col: col};
  this.instance.view.scrollViewport(coords);
  this.instance.view.render();

  this.TEXTAREA.on('cut.editor', function (event) {
    event.stopPropagation();
  });

  this.TEXTAREA.on('paste.editor', function (event) {
    event.stopPropagation();
  });

  if (useOriginalValue) {
    this.TEXTAREA[0].value = Handsontable.helper.stringify(this.originalValue) + (suffix || '');
  }
  else {
    this.TEXTAREA[0].value = '';
  }

  this.refreshDimensions(); //need it instantly, to prevent https://github.com/warpech/jquery-handsontable/issues/348
  this.TEXTAREA[0].focus();
  this.setCaretPosition(this.TEXTAREA[0], this.TEXTAREA[0].value.length);

  if (this.instance.getSettings().asyncRendering) {
    var that = this;
    setTimeout(function () {
      that.refreshDimensions(); //need it after rerender to reposition in case scroll was moved
    }, 0);
  }
};

HandsontableTextEditorClass.prototype.refreshDimensions = function () {
  if (!this.isCellEdited) {
    return;
  }

  ///start prepare textarea position
  this.TD = this.instance.getCell(this.row, this.col);
  var $td = $(this.TD); //because old td may have been scrolled out with scrollViewport
  var currentOffset = $td.offset();
  var containerOffset = this.instance.rootElement.offset();
  var scrollTop = this.instance.rootElement.scrollTop();
  var scrollLeft = this.instance.rootElement.scrollLeft();
  var editTop = currentOffset.top - containerOffset.top + scrollTop - 1;
  var editLeft = currentOffset.left - containerOffset.left + scrollLeft - 1;

  var settings = this.instance.getSettings();
  var rowHeadersCount = settings.rowHeaders === false ? 0 : 1;
  var colHeadersCount = settings.colHeaders === false ? 0 : 1;

  if (editTop < 0) {
    editTop = 0;
  }
  if (editLeft < 0) {
    editLeft = 0;
  }

  if (rowHeadersCount > 0 && parseInt($td.css('border-top-width'), 10) > 0) {
    editTop += 1;
  }
  if (colHeadersCount > 0 && parseInt($td.css('border-left-width'), 10) > 0) {
    editLeft += 1;
  }

  if ($.browser.msie && parseInt($.browser.version, 10) <= 7) {
    editTop -= 1;
  }

  this.TEXTAREA_PARENT.css({
    top: editTop,
    left: editLeft
  });
  ///end prepare textarea position

  var width = $td.width()
    , height = $td.outerHeight() - 4;

  if (parseInt($td.css('border-top-width'), 10) > 0) {
    height -= 1;
  }
  if (parseInt($td.css('border-left-width'), 10) > 0) {
    if (rowHeadersCount > 0) {
      width -= 1;
    }
  }

  this.TEXTAREA.autoResize({
    maxHeight: 200,
    minHeight: height,
    minWidth: width,
    maxWidth: Math.max(168, width),
    animate: false,
    extraSpace: 0
  });

  this.TEXTAREA_PARENT[0].style.display = 'block';
};

HandsontableTextEditorClass.prototype.finishEditing = function (isCancelled, ctrlDown) {
  if (this.isCellEdited) {
    this.isCellEdited = false;
    if (!isCancelled) {
      var val = [
        [$.trim(this.TEXTAREA[0].value)]
      ];
      if (ctrlDown) { //if ctrl+enter and multiple cells selected, behave like Excel (finish editing and apply to all cells)
        var sel = this.instance.getSelected();
        this.instance.populateFromArray({row: sel[0], col: sel[1]}, val, {row: sel[2], col: sel[3]}, false, 'edit');
      }
      else {
        this.instance.populateFromArray({row: this.row, col: this.col}, val, null, false, 'edit');
      }
    }
  }

  this.unbindTemporaryEvents();
  if (document.activeElement === this.TEXTAREA[0]) {
    this.TD.focus(); //don't refocus the table if user focused some cell outside of HT on purpose
  }

  this.TEXTAREA_PARENT[0].style.display = 'none';
};

/**
 * Default text editor
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Original value (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.TextEditor = function (instance, td, row, col, prop, value, cellProperties) {
  if (!instance.textEditor) {
    instance.textEditor = new HandsontableTextEditorClass(instance);
  }
  instance.textEditor.bindTemporaryEvents(td, row, col, prop, value, cellProperties);
  return function (isCancelled) {
    instance.textEditor.finishEditing(isCancelled);
  }
};
function HandsontableAutocompleteEditorClass(instance) {
  if (instance) {
    this.isCellEdited = false;
    this.instance = instance;
    this.createElements();
    this.bindEvents();
  }
}

HandsontableAutocompleteEditorClass.prototype = new HandsontableTextEditorClass();

HandsontableAutocompleteEditorClass.prototype._createElements = HandsontableTextEditorClass.prototype.createElements;

HandsontableAutocompleteEditorClass.prototype.createElements = function () {
  this._createElements();

  this.TEXTAREA.typeahead();
  this.typeahead = this.TEXTAREA.data('typeahead');
  this.typeahead._render = this.typeahead.render;
  this.typeahead.minLength = 0;

  this.typeahead.lookup = function () {
    var items;
    this.query = this.$element.val();
    items = $.isFunction(this.source) ? this.source(this.query, $.proxy(this.process, this)) : this.source;
    return items ? this.process(items) : this;
  };

  this.typeahead.matcher = function () {
    return true;
  };

  var _process = this.typeahead.process;
  this.typeahead.process = function (items) {
    for (var i = 0, ilen = items.length; i < ilen; i++) {
      if (items[i] === '') {
        //this is needed because because of issue #254
        //empty string ('') is a falsy value and breaks the loop in bootstrap-typeahead.js method `sorter`
        //best solution would be to change line: `while (item = items.shift()) {`
        //                                   to: `while ((item = items.shift()) !== void 0) {`
        items[i] = '[empty string]';
      }
    }
    return _process.call(this, items);
  };
};

HandsontableAutocompleteEditorClass.prototype._bindEvents = HandsontableTextEditorClass.prototype.bindEvents;

HandsontableAutocompleteEditorClass.prototype.bindEvents = function () {
  var that = this;

  this.typeahead.listen();

  this.TEXTAREA.off('keydown').off('keyup').off('keypress'); //unlisten

  this.TEXTAREA_PARENT.off('.acEditor').on('keydown.acEditor', function (event) {
    switch (event.keyCode) {
      case 38: /* arrow up */
        that.typeahead.prev();
        event.stopImmediatePropagation(); //stops TextEditor and core onKeyDown handler
        break;

      case 40: /* arrow down */
        that.typeahead.next();
        event.stopImmediatePropagation(); //stops TextEditor and core onKeyDown handler
        break;

      case 13: /* enter */
        event.preventDefault();
        break;
    }
  });

  this.TEXTAREA_PARENT.on('keyup.acEditor', function (event) {
    if (Handsontable.helper.isPrintableChar(event.keyCode) || event.keyCode === 113 || event.keyCode === 13 || event.keyCode === 8 || event.keyCode === 46) {
      that.typeahead.lookup();
    }
  });

  this._bindEvents();
};

HandsontableAutocompleteEditorClass.prototype._bindTemporaryEvents = HandsontableTextEditorClass.prototype.bindTemporaryEvents;

HandsontableAutocompleteEditorClass.prototype.bindTemporaryEvents = function (td, row, col, prop, value, cellProperties) {
  var that = this
    , i
    , j;

  this.typeahead.select = function () {
    var output = this.hide(); //need to hide it before destroyEditor, because destroyEditor checks if menu is expanded
    that.instance.destroyEditor(true);
    var val = this.$menu.find('.active').attr('data-value');
    if (val === '[empty string]') {
      val = '';
    }
    if (typeof cellProperties.onSelect === 'function') {
      cellProperties.onSelect(row, col, prop, val, this.$menu.find('.active').index());
    }
    else {
      that.instance.setDataAtRowProp(row, prop, val);
    }
    return output;
  };

  this.typeahead.render = function (items) {
    that.typeahead._render.call(this, items);
    if (!cellProperties.strict) {
      this.$menu.find('li:eq(0)').removeClass('active');
    }
    return this;
  };

  /* overwrite typeahead options and methods (matcher, sorter, highlighter, updater, etc) if provided in cellProperties */
  for (i in cellProperties) {
    if (cellProperties.hasOwnProperty(i)) {
      if (i === 'options') {
        for (j in cellProperties.options) {
          if (cellProperties.options.hasOwnProperty(j)) {
            this.typeahead.options[j] = cellProperties.options[j];
          }
        }
      }
      else {
        this.typeahead[i] = cellProperties[i];
      }
    }
  }

  this._bindTemporaryEvents(td, row, col, prop, value, cellProperties);

  function onDblClick() {
    that.beginEditing(row, col, prop, true);
    that.instance.registerTimeout('IE9_align_fix', function () { //otherwise is misaligned in IE9
      that.typeahead.lookup();
    }, 1);
  }

  this.instance.view.wt.update('onCellDblClick', onDblClick);
};

HandsontableAutocompleteEditorClass.prototype._finishEditing = HandsontableTextEditorClass.prototype.finishEditing;

HandsontableAutocompleteEditorClass.prototype.finishEditing = function (isCancelled, ctrlDown) {
  if (!isCancelled) {
    if (this.isMenuExpanded() && this.typeahead.$menu.find('.active').length) {
      this.typeahead.select();
      this.isCellEdited = false; //cell value was updated by this.typeahead.select (issue #405)
    }
    else if (this.cellProperties.strict) {
      this.isCellEdited = false; //cell value was not picked from this.typeahead.select (issue #405)
    }
  }
  this._finishEditing(isCancelled, ctrlDown);
};

HandsontableAutocompleteEditorClass.prototype.isMenuExpanded = function () {
  if (this.typeahead.$menu.is(":visible")) {
    return this.typeahead;
  }
  else {
    return false;
  }
};

/**
 * Autocomplete editor
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Original value (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.AutocompleteEditor = function (instance, td, row, col, prop, value, cellProperties) {
  if (!instance.autocompleteEditor) {
    instance.autocompleteEditor = new HandsontableAutocompleteEditorClass(instance);
  }
  instance.autocompleteEditor.bindTemporaryEvents(td, row, col, prop, value, cellProperties);
  return function (isCancelled) {
    instance.autocompleteEditor.finishEditing(isCancelled);
  }
};
function toggleCheckboxCell(instance, row, prop, cellProperties) {
  if (Handsontable.helper.stringify(instance.getDataAtRowProp(row, prop)) === Handsontable.helper.stringify(cellProperties.checkedTemplate)) {
    instance.setDataAtRowProp(row, prop, cellProperties.uncheckedTemplate);
  }
  else {
    instance.setDataAtRowProp(row, prop, cellProperties.checkedTemplate);
  }
}

/**
 * Checkbox editor
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Original value (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.CheckboxEditor = function (instance, td, row, col, prop, value, cellProperties) {
  if (typeof cellProperties === "undefined") {
    cellProperties = {};
  }
  if (typeof cellProperties.checkedTemplate === "undefined") {
    cellProperties.checkedTemplate = true;
  }
  if (typeof cellProperties.uncheckedTemplate === "undefined") {
    cellProperties.uncheckedTemplate = false;
  }

  instance.$table.on("keydown.editor", function (event) {
    var ctrlDown = (event.ctrlKey || event.metaKey) && !event.altKey; //catch CTRL but not right ALT (which in some systems triggers ALT+CTRL)
    if (!ctrlDown && Handsontable.helper.isPrintableChar(event.keyCode)) {
      toggleCheckboxCell(instance, row, prop, cellProperties);
      event.stopImmediatePropagation(); //stops core onKeyDown handler
      event.preventDefault(); //some keys have special behavior, eg. space bar scrolls screen down
    }
  });

  function onDblClick() {
    toggleCheckboxCell(instance, row, prop, cellProperties);
  }

  instance.view.wt.update('onCellDblClick', onDblClick);

  return function () {
    instance.$table.off(".editor");
    instance.view.wt.update('onCellDblClick', null);
  }
};
function HandsontableDateEditorClass(instance) {
  if (instance) {
    this.isCellEdited = false;
    this.instance = instance;
    this.createElements();
    this.bindEvents();
  }
}

HandsontableDateEditorClass.prototype = new HandsontableTextEditorClass();

HandsontableDateEditorClass.prototype._createElements = HandsontableTextEditorClass.prototype.createElements;

HandsontableDateEditorClass.prototype.createElements = function () {
  this._createElements();

  this.datePickerdiv = $("<div>");
  this.datePickerdiv[0].style.position = 'absolute';
  this.datePickerdiv[0].style.top = 0;
  this.datePickerdiv[0].style.left = 0;
  this.datePickerdiv[0].style.zIndex = 99;
  this.instance.rootElement[0].appendChild(this.datePickerdiv[0]);

  var that = this;
  var defaultOptions = {
    dateFormat: "yy-mm-dd",
    showButtonPanel: true,
    changeMonth: true,
    changeYear: true,
    altField: this.TEXTAREA,
    onSelect: function () {
      that.finishEditing(false);
    }
  };
  this.datePickerdiv.datepicker(defaultOptions);
  this.datePickerdiv.hide();
}

HandsontableDateEditorClass.prototype._bindEvents = HandsontableTextEditorClass.prototype.bindEvents;

HandsontableDateEditorClass.prototype.bindEvents = function () {
  this._bindEvents();
}

HandsontableDateEditorClass.prototype._beginEditing = HandsontableTextEditorClass.prototype.beginEditing;

HandsontableDateEditorClass.prototype.beginEditing = function (row, col, prop, useOriginalValue, suffix) {
  this._beginEditing(row, col, prop, useOriginalValue, suffix);
  this.showDatepicker();
}

HandsontableDateEditorClass.prototype._finishEditing = HandsontableTextEditorClass.prototype.finishEditing;

HandsontableDateEditorClass.prototype.finishEditing = function (isCancelled, ctrlDown) {
  this.hideDatepicker();
  this._finishEditing(isCancelled, ctrlDown);
}

HandsontableDateEditorClass.prototype.showDatepicker = function () {
  var $td = $(this.instance.dateEditor.TD);
  var position = $td.position();
  this.datePickerdiv[0].style.top = (position.top + $td.height()) + 'px';
  this.datePickerdiv[0].style.left = position.left + 'px';

  var dateOptions = {
    defaultDate: this.originalValue || void 0
  };
  $.extend(dateOptions, this.cellProperties);
  this.datePickerdiv.datepicker("option", dateOptions);
  if (this.originalValue) {
    this.datePickerdiv.datepicker("setDate", this.originalValue);
  }
  this.datePickerdiv.show();
}

HandsontableDateEditorClass.prototype.hideDatepicker = function () {
  this.datePickerdiv.hide();
}

/**
 * Date editor (uses jQuery UI Datepicker)
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Original value (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.DateEditor = function (instance, td, row, col, prop, value, cellProperties) {
  if (!instance.dateEditor) {
    instance.dateEditor = new HandsontableDateEditorClass(instance);
  }
  instance.dateEditor.bindTemporaryEvents(td, row, col, prop, value, cellProperties);
  return function (isCancelled) {
    instance.dateEditor.finishEditing(isCancelled);
  }
};
/**
 * This is inception. Using Handsontable as Handsontable editor
 */

function HandsontableHandsontableEditorClass(instance) {
  if (instance) {
    this.isCellEdited = false;
    this.instance = instance;
    this.createElements();
    this.bindEvents();
  }
}

HandsontableHandsontableEditorClass.prototype = new HandsontableTextEditorClass();

HandsontableHandsontableEditorClass.prototype._createElements = HandsontableTextEditorClass.prototype.createElements;

HandsontableHandsontableEditorClass.prototype.createElements = function () {
  this._createElements();

  var DIV = document.createElement('DIV');
  DIV.className = 'handsontableEditor';
  this.TEXTAREA_PARENT[0].appendChild(DIV);

  this.$htContainer = $(DIV);
};

HandsontableHandsontableEditorClass.prototype._bindEvents = HandsontableTextEditorClass.prototype.bindEvents;

HandsontableHandsontableEditorClass.prototype.bindEvents = function () {

  this._bindEvents();
};

HandsontableHandsontableEditorClass.prototype._bindTemporaryEvents = HandsontableTextEditorClass.prototype.bindTemporaryEvents;

HandsontableHandsontableEditorClass.prototype.bindTemporaryEvents = function (td, row, col, prop, value, cellProperties) {
  var parent = this;

  var options = {
    colHeaders: true,
    cells: function () {
      return {
        readOnly: true
      }
    },
    fillHandle: false,
    width: 2000,
    //width: 'auto',
    asyncRendering: false,
    afterOnCellMouseDown: function () {
      var sel = this.getSelected();
      parent.TEXTAREA[0].value = this.getDataAtCell(sel[0], sel[1]);
      parent.instance.destroyEditor();
    },
    beforeOnKeyDown: function (event) {
      switch (event.keyCode) {
        case 27: //esc
          parent.instance.destroyEditor(true);
          break;

        case 13: //enter
          var sel = this.getSelected();
          parent.TEXTAREA[0].value = this.getDataAtCell(sel[0], sel[1]);
          parent.instance.destroyEditor();
          break;
      }
    }
  };

  if (cellProperties.handsontable) {
    options = $.extend(options, cellProperties.handsontable);
  }

  this.$htContainer.handsontable(options);

  this._bindTemporaryEvents(td, row, col, prop, value, cellProperties);
};

HandsontableHandsontableEditorClass.prototype._beginEditing = HandsontableTextEditorClass.prototype.beginEditing;

HandsontableHandsontableEditorClass.prototype.beginEditing = function (row, col, prop, useOriginalValue, suffix) {
  var onBeginEditing = this.instance.getSettings().onBeginEditing;
  if (onBeginEditing && onBeginEditing() === false) {
    return;
  }

  this._beginEditing(row, col, prop, useOriginalValue, suffix);

  this.$htContainer.handsontable('selectCell', 0, 0);
};

HandsontableHandsontableEditorClass.prototype._finishEditing = HandsontableTextEditorClass.prototype.finishEditing;

HandsontableHandsontableEditorClass.prototype.finishEditing = function (isCancelled, ctrlDown) {
  if (Handsontable.helper.isDescendant(this.instance.rootElement[0], document.activeElement)) {
    var that = this;
    setTimeout(function () {
      that.TD.focus(); //return the focus to the cell must be done after destroyer to work in IE7-9
    }, 0);
    this.TD.focus(); //return the focus to the cell
  }
  this.$htContainer.handsontable('destroy');
  this._finishEditing(isCancelled, ctrlDown);
};

HandsontableHandsontableEditorClass.prototype.isMenuExpanded = function () {
  if (this.typeahead.$menu.is(":visible")) {
    return this.typeahead;
  }
  else {
    return false;
  }
};

/**
 * Handsontable editor
 * @param {Object} instance Handsontable instance
 * @param {Element} td Table cell where to render
 * @param {Number} row
 * @param {Number} col
 * @param {String|Number} prop Row object property name
 * @param value Original value (remember to escape unsafe HTML before inserting to DOM!)
 * @param {Object} cellProperties Cell properites (shared by cell renderer and editor)
 */
Handsontable.HandsontableEditor = function (instance, td, row, col, prop, value, cellProperties) {
  if (!instance.handsontableEditor) {
    instance.handsontableEditor = new HandsontableHandsontableEditorClass(instance);
  }
  instance.handsontableEditor.bindTemporaryEvents(td, row, col, prop, value, cellProperties);

  instance.registerEditor = instance.handsontableEditor;

  return function (isCancelled) {
    instance.handsontableEditor.finishEditing(isCancelled);
  }
};
/**
 * Cell type is just a shortcut for setting bunch of cellProperties (used in getCellMeta)
 */

Handsontable.AutocompleteCell = {
  renderer: Handsontable.AutocompleteRenderer,
  editor: Handsontable.AutocompleteEditor
};

Handsontable.CheckboxCell = {
  renderer: Handsontable.CheckboxRenderer,
  editor: Handsontable.CheckboxEditor
};

Handsontable.TextCell = {
  renderer: Handsontable.TextRenderer,
  editor: Handsontable.TextEditor
};

Handsontable.NumericCell = {
  renderer: Handsontable.NumericRenderer,
  editor: Handsontable.TextEditor,
  dataType: 'number'
};

Handsontable.DateCell = {
  renderer: Handsontable.AutocompleteRenderer, //displays small gray arrow on right side of the cell
  editor: Handsontable.DateEditor
};

Handsontable.HandsontableCell = {
  renderer: Handsontable.AutocompleteRenderer, //displays small gray arrow on right side of the cell
  editor: Handsontable.HandsontableEditor
};

//here setup the friendly aliases that are used by cellProperties.type
Handsontable.cellTypes = {
  autocomplete: Handsontable.AutocompleteCell,
  checkbox: Handsontable.CheckboxCell,
  text: Handsontable.TextCell,
  numeric: Handsontable.NumericCell,
  date: Handsontable.DateCell,
  handsontable: Handsontable.HandsontableCell
};
Handsontable.PluginHooks = {
  hooks: {
    beforeInit: [],
    afterInit: [],
    afterLoadData: [],
    beforeRender: [],
    afterRender: [],
    beforeGet: [],
    beforeSet: [],
    beforeGetCellMeta: [],
    afterGetCellMeta: [],
    afterGetColHeader: [],
    afterGetColWidth: [],
    walkontableConfig: [],
    afterDestroy: []
  },

  push: function (key, fn) {
    this.hooks[key].push(fn);
  },

  unshift: function (key, fn) {
    this.hooks[key].unshift(fn);
  },

  run: function (instance, key, p1, p2, p3, p4, p5) {
    //performance considerations - http://jsperf.com/call-vs-apply-for-a-plugin-architecture
    for (var i = 0, ilen = this.hooks[key].length; i < ilen; i++) {
      this.hooks[key][i].call(instance, p1, p2, p3, p4, p5);
    }
  }
};

Handsontable.PluginModifiers = {
  modifiers: {
    col: []
  },

  push: function (key, fn) {
    this.modifiers[key].push(fn);
  },

  unshift: function (key, fn) {
    this.modifiers[key].unshift(fn);
  },

  run: function (instance, key, p1, p2, p3, p4, p5) {
    for (var i = 0, ilen = this.modifiers[key].length; i < ilen; i++) {
      p1 = this.modifiers[key][i].call(instance, p1, p2, p3, p4, p5);
    }
    return p1;
  }
};
/**
 * This plugin determines the optimal column size for the data that's inside it
 * @constructor
 */
function HandsontableAutoColumnSize() {
  var that = this
    , instance
    , tmp
    , $tmp
    , tmpTbody
    , tmpTbodyTd
    , tmpThead
    , tmpTheadTh
    , tmpNoRenderer
    , tmpNoRendererTd
    , tmpRenderer
    , tmpRendererTd
    , sampleCount = 5; //number of samples to take of each value length

  this.beforeInit = function () {
    this.autoColumnWidths = [];
  };

  this.determineColumnWidth = function (col) {
    if (!tmp) {

      var d = document;

      tmpThead   = d.createElement('table');
      tmpThead.appendChild(d.createElement('thead')).appendChild(d.createElement('tr')).appendChild(d.createElement('th'));
      tmpTheadTh = tmpThead.getElementsByTagName('th')[0];

      tmpThead.className = 'htTable';
      tmpThead.style.tableLayout = 'auto',
      tmpThead.style.width = 'auto',

      tmpTbody   = tmpThead.cloneNode(false);
      tmpTbody.appendChild(d.createElement('tbody')).appendChild(d.createElement('tr')).appendChild(d.createElement('td'));
      tmpTbodyTd = tmpTbody.getElementsByTagName('td')[0];

      tmpNoRenderer   = tmpTbody.cloneNode(true);
      tmpNoRendererTd = tmpNoRenderer.getElementsByTagName('td')[0];

      tmpRenderer   = tmpTbody.cloneNode(true);
      tmpRendererTd = tmpRenderer.getElementsByTagName('td')[0];

      tmp = d.createElement('div');
      tmp.className = 'handsontable hidden';

      tmp.appendChild(tmpThead);
      tmp.appendChild(tmpTbody);
      tmp.appendChild(tmpNoRenderer);
      tmp.appendChild(tmpRenderer);

      $tmp = $(tmp);

      tmpNoRenderer = $tmp.children().eq(2);
      tmpRenderer   = $tmp.children().eq(3);

      d.body.appendChild(tmp);

    }

    var rows = instance.countRows();
    var samples = {};
    var maxLen = 0;
    for (var r = 0; r < rows; r++) {
      var value = Handsontable.helper.stringify(instance.getDataAtCell(r, col));
      var len = value.length;
      if (len > maxLen) {
        maxLen = len;
      }
      if (!samples[len]) {
        samples[len] = {
          needed: sampleCount,
          strings: []
        };
      }
      if (samples[len].needed) {
        samples[len].strings.push(value);
        samples[len].needed--;
      }
    }

    var settings = instance.getSettings();
    if (settings.colHeaders) {
      instance.getColHeader(col, tmpTheadTh); //TH innerHTML
    }

    var txt = '';
    for (var i in samples) {
      if (samples.hasOwnProperty(i)) {
        for (var j = 0, jlen = samples[i].strings.length; j < jlen; j++) {
          txt += samples[i].strings[j] + '<br>';
        }
      }
    }
    tmpTbodyTd.innerHTML = txt; //TD innerHTML

    Handsontable.helper.empty(tmpRendererTd);
    Handsontable.helper.empty(tmpNoRendererTd);

    tmp.style.display = 'block';

    var width = $tmp.outerWidth();

    var cellProperties = instance.getCellMeta(0, col);
    if (cellProperties.renderer) {
      var str = 9999999999;

      tmpNoRendererTd.innerHTML = str;

      cellProperties.renderer(instance, tmpRendererTd, 0, col, instance.colToProp(col), str, cellProperties);

      width += tmpRenderer.width() - tmpNoRenderer.width(); //add renderer overhead to the calculated width
    }

    tmp.style.display = 'none';

    return width;
  };

  this.determineColumnsWidth = function () {
    instance = this;
    var settings = this.getSettings();
    if (settings.autoColumnSize || !settings.colWidths) {
      var cols = this.countCols();
      for (var c = 0; c < cols; c++) {
        this.autoColumnWidths[c] = that.determineColumnWidth(c);
      }
    }
  };

  this.getColWidth = function (col, response) {
    if (this.autoColumnWidths[col] && this.autoColumnWidths[col] > response.width) {
      response.width = this.autoColumnWidths[col];
    }
  };
}
var htAutoColumnSize = new HandsontableAutoColumnSize();

Handsontable.PluginHooks.push('beforeInit', htAutoColumnSize.beforeInit);
Handsontable.PluginHooks.push('beforeRender', htAutoColumnSize.determineColumnsWidth);
Handsontable.PluginHooks.push('afterGetColWidth', htAutoColumnSize.getColWidth);

/**
 * This plugin sorts the view by a column (but does not sort the data source!)
 * @constructor
 */
function HandsontableColumnSorting() {
  var plugin = this;
  var sortingEnabled;

  this.afterInit = function () {
    var instance = this;
    if (this.getSettings().columnSorting) {
      this.sortIndex = [];
      this.rootElement.on('click.handsontable', '.columnSorting', function (e) {
        var $target = $(e.target);
        if ($target.is('.columnSorting')) {
          var col = $target.closest('th').index();
          if (instance.getSettings().rowHeaders) {
            col--;
          }
          if (instance.sortColumn === col) {
            instance.sortOrder = !instance.sortOrder;
          }
          else {
            instance.sortColumn = col;
            instance.sortOrder = true;
          }
          plugin.sort.call(instance);
          instance.render();
        }
      });
    }
  };

  this.sort = function () {
    sortingEnabled = false;
    var instance = this;
    this.sortIndex.length = 0;
    //var data = this.getData();
    for (var i = 0, ilen = this.countRows(); i < ilen; i++) {
      //this.sortIndex.push([i, data[i][this.sortColumn]]);
      this.sortIndex.push([i, instance.getDataAtCell(i, this.sortColumn)]);
    }
    this.sortIndex.sort(function (a, b) {
      if (a[1] === b[1]) {
        return 0;
      }
      if (a[1] === null) {
        return 1;
      }
      if (b[1] === null) {
        return -1;
      }
      if (a[1] < b[1]) return instance.sortOrder ? -1 : 1;
      if (a[1] > b[1]) return instance.sortOrder ? 1 : -1;
      return 0;
    });
    sortingEnabled = true;
  };

  this.translateRow = function (getVars) {
    if (sortingEnabled && this.sortIndex && this.sortIndex.length) {
      getVars.row = this.sortIndex[getVars.row][0];
    }
  };

  this.getColHeader = function (col, TH) {
    if (this.getSettings().columnSorting) {
      $(TH).find('span.colHeader')[0].className += ' columnSorting';
    }
  };
}
var htSortColumn = new HandsontableColumnSorting();

Handsontable.PluginHooks.push('afterInit', htSortColumn.afterInit);
Handsontable.PluginHooks.push('beforeGet', htSortColumn.translateRow);
Handsontable.PluginHooks.push('beforeSet', htSortColumn.translateRow);
Handsontable.PluginHooks.push('afterGetColHeader', htSortColumn.getColHeader);
function createContextMenu() {
  var instance = this
      , selectorId = instance.rootElement[0].id
      , allItems = {
        "row_above": {name: "Insert row above", disabled: isDisabled},
        "row_below": {name: "Insert row below", disabled: isDisabled},
        "hsep1": "---------",
        "col_left": {name: "Insert column on the left", disabled: isDisabled},
        "col_right": {name: "Insert column on the right", disabled: isDisabled},
        "hsep2": "---------",
        "remove_row": {name: "Remove row", disabled: isDisabled},
        "remove_col": {name: "Remove column", disabled: isDisabled},
        "hsep3": "---------",
        "undo": {name: "Undo", disabled: function () {
          return !instance.isUndoAvailable();
        }},
        "redo": {name: "Redo", disabled: function () {
          return !instance.isRedoAvailable();
        }}
      }
      , defaultOptions = {
          selector : "#" + selectorId + ' table, #' + selectorId + ' div',
          trigger  : 'right',
          callback : onContextClick
        }
      , options = {}
      , i
      , ilen
      , settings = instance.getSettings();

  function onContextClick(key) {
    var corners = instance.getSelected(); //[top left row, top left col, bottom right row, bottom right col]

    if (!corners) {
      return; //needed when there are 2 grids on a page
    }

    switch (key) {
      case "row_above":
        instance.alter("insert_row", corners[0]);
        break;

      case "row_below":
        instance.alter("insert_row", corners[2] + 1);
        break;

      case "col_left":
        instance.alter("insert_col", corners[1]);
        break;

      case "col_right":
        instance.alter("insert_col", corners[3] + 1);
        break;

      case "remove_row":
        instance.alter(key, corners[0], corners[2]);
        break;

      case "remove_col":
        instance.alter(key, corners[1], corners[3]);
        break;

      case "undo":
        instance.undo();
        break;

      case "redo":
        instance.redo();
        break;
    }
  }

  function isDisabled(key) {
    //TODO rewrite
    /*if (instance.blockedCols.main.find('th.htRowHeader.active').length && (key === "remove_col" || key === "col_left" || key === "col_right")) {
     return true;
     }
     else if (instance.blockedRows.main.find('th.htColHeader.active').length && (key === "remove_row" || key === "row_above" || key === "row_below")) {
     return true;
     }
     else*/
    if (instance.countRows() >= instance.getSettings().maxRows && (key === "row_above" || key === "row_below")) {
      return true;
    }
    else if (instance.countCols() >= instance.getSettings().maxCols && (key === "col_left" || key === "col_right")) {
      return true;
    }
    else {
      return false;
    }
  }

  if (!settings.contextMenu) {
    return;
  }
  else if (settings.contextMenu === true) { //contextMenu is true
    options.items = allItems;
  }
  else if (Object.prototype.toString.apply(settings.contextMenu) === '[object Array]') { //contextMenu is an array
    options.items = {};
    for (i = 0, ilen = settings.contextMenu.length; i < ilen; i++) {
      var key = settings.contextMenu[i];
      if (typeof allItems[key] === 'undefined') {
        throw new Error('Context menu key "' + key + '" is not recognised');
      }
      options.items[key] = allItems[key];
    }
  }
  else if (Object.prototype.toString.apply(settings.contextMenu) === '[object Object]') { //contextMenu is an options object as defined in http://medialize.github.com/jQuery-contextMenu/docs.html
    options = settings.contextMenu;
    if (options.items) {
      for (i in options.items) {
        if (options.items.hasOwnProperty(i) && allItems[i]) {
          if (typeof options.items[i] === 'string') {
            options.items[i] = allItems[i];
          }
          else {
            options.items[i] = $.extend(true, allItems[i], options.items[i]);
          }
        }
      }
    }
    else {
      options.items = allItems;
    }

    if (options.callback) {
      var handsontableCallback = defaultOptions.callback;
      var customCallback = options.callback;
      options.callback = function (key, options) {
        handsontableCallback(key, options);
        customCallback(key, options);
      }
    }
  }

  if (!selectorId) {
    throw new Error("Handsontable container must have an id");
  }

  $.contextMenu($.extend(true, defaultOptions, options));
}

function destroyContextMenu() {
  var id = this.rootElement[0].id;
  $.contextMenu('destroy', "#" + id + ' table, #' + id + ' div');
}

Handsontable.PluginHooks.push('afterInit', createContextMenu);
Handsontable.PluginHooks.push('afterDestroy', destroyContextMenu);
/**
 * This plugin adds support for legacy features, deprecated APIs, etc.
 */

/**
 * Support for old autocomplete syntax
 * For old syntax, see: https://github.com/warpech/jquery-handsontable/blob/8c9e701d090ea4620fe08b6a1a048672fadf6c7e/README.md#defining-autocomplete
 */
Handsontable.PluginHooks.push('beforeGetCellMeta', function (row, col, cellProperties) {
  var settings = this.getSettings(), data = this.getData(), i, ilen, a;
  if (settings.autoComplete) {
    for (i = 0, ilen = settings.autoComplete.length; i < ilen; i++) {
      if (settings.autoComplete[i].match(row, col, data)) {
        if (typeof cellProperties.type === 'undefined') {
          cellProperties.type = Handsontable.AutocompleteCell;
        }
        else {
          if (typeof cellProperties.type.renderer === 'undefined') {
            cellProperties.type.renderer = Handsontable.AutocompleteCell.renderer;
          }
          if (typeof cellProperties.type.editor === 'undefined') {
            cellProperties.type.editor = Handsontable.AutocompleteCell.editor;
          }
        }
        for (a in settings.autoComplete[i]) {
          if (settings.autoComplete[i].hasOwnProperty(a) && a !== 'match' && typeof cellProperties[i] === 'undefined') {
            if (a === 'source') {
              cellProperties[a] = settings.autoComplete[i][a](row, col);
            }
            else {
              cellProperties[a] = settings.autoComplete[i][a];
            }
          }
        }
        break;
      }
    }
  }
});

/**
 * jQuery.browser shim that makes HT working with jQuery 1.8+
 */
if (!jQuery.browser) {
  (function () {
    var matched, browser;

    /*
     * Copyright 2011, John Resig
     * Dual licensed under the MIT or GPL Version 2 licenses.
     * http://jquery.org/license
     */
    jQuery.uaMatch = function (ua) {
      ua = ua.toLowerCase();

      var match = /(chrome)[ \/]([\w.]+)/.exec(ua) ||
        /(webkit)[ \/]([\w.]+)/.exec(ua) ||
        /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) ||
        /(msie) ([\w.]+)/.exec(ua) ||
        ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
        [];

      return {
        browser: match[ 1 ] || "",
        version: match[ 2 ] || "0"
      };
    };

    matched = jQuery.uaMatch(navigator.userAgent);
    browser = {};

    if (matched.browser) {
      browser[ matched.browser ] = true;
      browser.version = matched.version;
    }

    // Chrome is Webkit, but Webkit is also Safari.
    if (browser.chrome) {
      browser.webkit = true;
    }
    else if (browser.webkit) {
      browser.safari = true;
    }

    jQuery.browser = browser;

  })();
}
function HandsontableManualColumnMove() {
  var instance
    , pressed
    , startCol
    , endCol
    , startX
    , startOffset;

  var $ghost = $('<div class="ghost"></div>');
  $ghost.css({
    position: 'absolute',
    top: '25px',
    left: 0,
    width: '10px',
    height: '10px',
    backgroundColor: '#CCC',
    opacity: 0.7
  });

  $(document).mousemove(function (e) {
    if (pressed) {
      $ghost[0].style.left = startOffset + e.pageX - startX + 6 + 'px';
      if ($ghost[0].style.display === 'none') {
        $ghost[0].style.display = 'block';
      }
    }
  });

  $(document).mouseup(function () {
    if (pressed) {
      if (startCol < endCol) {
        endCol--;
      }
      if (instance.getSettings().rowHeaders) {
        startCol--;
        endCol--;
      }
      instance.manualColumnPositions.splice(endCol, 0, instance.manualColumnPositions.splice(startCol, 1)[0]);
      $('.manualColumnMover.active').removeClass('active');
      pressed = false;
      instance.forceFullRender = true;
      instance.view.render(); //updates all
      $ghost[0].style.display = 'none';
    }
  });

  this.beforeInit = function () {
    this.manualColumnPositions = [];
  };

  this.afterInit = function () {
    if (this.getSettings().manualColumnMove) {
      var that = this;
      this.rootElement.on('mousedown.handsontable', '.manualColumnMover', function (e) {
        instance = that;

        var $resizer = $(e.target);
        var th = $resizer.closest('th');
        startCol = th.index();
        pressed = true;
        startX = e.pageX;

        var $table = that.rootElement.find('.htCore');
        $ghost.appendTo($table.parent());
        $ghost.width($resizer.parent().width());
        $ghost.height($table.height());
        startOffset = parseInt(th.offset().left - $table.offset().left, 10);
        $ghost[0].style.left = startOffset + 6 + 'px';
      });
      this.rootElement.on('mouseenter.handsontable', 'td, th', function (e) {
        if (pressed) {
          $('.manualColumnMover.active').removeClass('active');
          var $ths = that.rootElement.find('thead th');
          endCol = $(this).index();
          var $hover = $ths.eq(endCol).find('.manualColumnMover').addClass('active');
          $ths.not($hover).removeClass('active');
        }
      });
    }
  };

  this.modifyCol = function (col) {
    //TODO test performance: http://jsperf.com/object-wrapper-vs-primitive/2
    if (this.getSettings().manualColumnMove) {
      if (typeof this.manualColumnPositions[col] === 'undefined') {
        this.manualColumnPositions[col] = col;
      }
      return this.manualColumnPositions[col];
    }
    return col;
  };

  this.getColHeader = function (col, TH) {
    if (this.getSettings().manualColumnMove) {
      var DIV = document.createElement('DIV');
      DIV.className = 'manualColumnMover';
      TH.firstChild.appendChild(DIV);
    }
  };
}
var htManualColumnMove = new HandsontableManualColumnMove();

Handsontable.PluginHooks.push('beforeInit', htManualColumnMove.beforeInit);
Handsontable.PluginHooks.push('afterInit', htManualColumnMove.afterInit);
Handsontable.PluginHooks.push('afterGetColHeader', htManualColumnMove.getColHeader);
Handsontable.PluginModifiers.push('col', htManualColumnMove.modifyCol);

function HandsontableManualColumnResize() {
  var pressed
    , currentCol
    , currentWidth
    , instance
    , start
    , startX
    , startWidth
    , startOffset;

  var $line = $('<div class="manualColumnResizerLine"><div class="manualColumnResizer"></div></div>');
  $line.css({
    position: 'absolute',
    top: 0,
    left: 0,
    width: 0,
    borderRight: '1px dashed #777'
  });

  $(document).mousemove(function (e) {
    if (pressed) {
      currentWidth = startWidth + (e.pageX - startX);
      setManualSize(currentCol, currentWidth); //save col width
      $line[0].style.left = startOffset + currentWidth - 1 + 'px';
      if ($line[0].style.display === 'none') {
        $line[0].style.display = 'block';
      }
    }
  });

  $(document).mouseup(function () {
    if (pressed) {
      $('.manualColumnResizer.active').removeClass('active');
      pressed = false;
      instance.forceFullRender = true;
      instance.view.render(); //updates all
      $line[0].style.display = 'none';
    }
  });

  $(document).dblclick(function (e) {
    if ($(e.target).is('.manualColumnResizer')) {
      setManualSize(currentCol, htAutoColumnSize.determineColumnWidth.call(instance, currentCol));
    }
  });

  this.beforeInit = function () {
    this.manualColumnWidths = [];
  };

  this.afterInit = function () {
    if (this.getSettings().manualColumnResize) {
      var that = this;
      this.rootElement.on('mousedown.handsontable', '.manualColumnResizer', function (e) {
        var _resizer = e.target,
            $table   = that.rootElement.find('.htCore'),
            $grandpa = $(_resizer.parentNode.parentNode);

        instance = that;
        currentCol = _resizer.getAttribute('rel');
        start = $(that.rootElement[0].getElementsByTagName('col')[$grandpa.index()]);
        pressed = true;
        startX = e.pageX;
        startWidth = start.width();
        currentWidth = startWidth;

        _resizer.className += ' active';

        $line.appendTo($table.parent()).height($table.height());
        startOffset = parseInt($grandpa.offset().left - $table.offset().left, 10);
        $line[0].style.left = startOffset + currentWidth - 1 + 'px';
      });
    }
  };

  var setManualSize = function (col, width) {
    width = Math.max(width, 20);
    width = Math.min(width, 500);
    instance.manualColumnWidths[col] = width;
  };

  this.getColHeader = function (col, TH) {
    if (this.getSettings().manualColumnResize) {
      var DIV = document.createElement('DIV');
      DIV.className = 'manualColumnResizer';
      DIV.setAttribute('rel', col);
      TH.firstChild.appendChild(DIV);
    }
  };

  this.getColWidth = function (col, response) {
    if (this.getSettings().manualColumnResize && this.manualColumnWidths[col]) {
      response.width = this.manualColumnWidths[col];
    }
  };
}
var htManualColumnResize = new HandsontableManualColumnResize();

Handsontable.PluginHooks.push('beforeInit', htManualColumnResize.beforeInit);
Handsontable.PluginHooks.push('afterInit', htManualColumnResize.afterInit);
Handsontable.PluginHooks.push('afterGetColHeader', htManualColumnResize.getColHeader);
Handsontable.PluginHooks.push('afterGetColWidth', htManualColumnResize.getColWidth);

/*
 * jQuery.fn.autoResize 1.1+
 * --
 * https://github.com/warpech/jQuery.fn.autoResize
 *
 * This fork differs from others in a way that it autoresizes textarea in 2-dimensions (horizontally and vertically).
 * It was originally forked from alexbardas's repo but maybe should be merged with dpashkevich's repo in future.
 *
 * originally forked from:
 * https://github.com/jamespadolsey/jQuery.fn.autoResize
 * which is now located here:
 * https://github.com/alexbardas/jQuery.fn.autoResize
 * though the mostly maintained for is here:
 * https://github.com/dpashkevich/jQuery.fn.autoResize/network
 *
 * --
 * This program is free software. It comes without any warranty, to
 * the extent permitted by applicable law. You can redistribute it
 * and/or modify it under the terms of the Do What The Fuck You Want
 * To Public License, Version 2, as published by Sam Hocevar. See
 * http://sam.zoy.org/wtfpl/COPYING for more details. */

(function($){

  autoResize.defaults = {
    onResize: function(){},
    animate: {
      duration: 200,
      complete: function(){}
    },
    extraSpace: 50,
    minHeight: 'original',
    maxHeight: 500,
    minWidth: 'original',
    maxWidth: 500
  };

  autoResize.cloneCSSProperties = [
    'lineHeight', 'textDecoration', 'letterSpacing',
    'fontSize', 'fontFamily', 'fontStyle', 'fontWeight',
    'textTransform', 'textAlign', 'direction', 'wordSpacing', 'fontSizeAdjust',
    'padding'
  ];

  autoResize.cloneCSSValues = {
    position: 'absolute',
    top: -9999,
    left: -9999,
    opacity: 0,
    overflow: 'hidden',
    border: '1px solid black',
    padding: '0.49em' //this must be about the width of caps W character
  };

  autoResize.resizableFilterSelector = 'textarea,input:not(input[type]),input[type=text],input[type=password]';

  autoResize.AutoResizer = AutoResizer;

  $.fn.autoResize = autoResize;

  function autoResize(config) {
    this.filter(autoResize.resizableFilterSelector).each(function(){
      new AutoResizer( $(this), config );
    });
    return this;
  }

  function AutoResizer(el, config) {

    if(this.clones) return;

    this.config = $.extend({}, autoResize.defaults, config);

    this.el = el;

    this.nodeName = el[0].nodeName.toLowerCase();

    this.previousScrollTop = null;

    if (config.maxWidth === 'original') config.maxWidth = el.width();
    if (config.minWidth === 'original') config.minWidth = el.width();
    if (config.maxHeight === 'original') config.maxHeight = el.height();
    if (config.minHeight === 'original') config.minHeight = el.height();

    if (this.nodeName === 'textarea') {
      el.css({
        resize: 'none',
        overflowY: 'hidden'
      });
    }

    el.data('AutoResizer', this);

    this.createClone();
    this.injectClone();
    this.bind();

  }

  AutoResizer.prototype = {

    bind: function() {

      var check = $.proxy(function(){
        this.check();
        return true;
      }, this);

      this.unbind();

      this.el
        .bind('keyup.autoResize', check)
        //.bind('keydown.autoResize', check)
        .bind('change.autoResize', check);

      this.check(null, true);

    },

    unbind: function() {
      this.el.unbind('.autoResize');
    },

    createClone: function() {

      var el = this.el,
        self = this,
        config = this.config;

      this.clones = $();

      if (config.minHeight !== 'original' || config.maxHeight !== 'original') {
        this.hClone = el.clone().height('auto');
        this.clones = this.clones.add(this.hClone);
      }
      if (config.minWidth !== 'original' || config.maxWidth !== 'original') {
        this.wClone = $('<div/>').width('auto').css({
          whiteSpace: 'nowrap',
          'float': 'left'
        });
        this.clones = this.clones.add(this.wClone);
      }

      $.each(autoResize.cloneCSSProperties, function(i, p){
        self.clones.css(p, el.css(p));
      });

      this.clones
        .removeAttr('name')
        .removeAttr('id')
        .attr('tabIndex', -1)
        .css(autoResize.cloneCSSValues);

    },

    check: function(e, immediate) {

      var config = this.config,
        wClone = this.wClone,
        hClone = this.hClone,
        el = this.el,
        value = el.val();

      if (wClone) {

        wClone.text(value);

        // Calculate new width + whether to change
        var cloneWidth = wClone.outerWidth(),
          newWidth = (cloneWidth + config.extraSpace) >= config.minWidth ?
            cloneWidth + config.extraSpace : config.minWidth,
          currentWidth = el.width();

        newWidth = Math.min(newWidth, config.maxWidth);

        if (
          (newWidth < currentWidth && newWidth >= config.minWidth) ||
            (newWidth >= config.minWidth && newWidth <= config.maxWidth)
          ) {

          config.onResize.call(el);

          el.scrollLeft(0);

          config.animate && !immediate ?
            el.stop(1,1).animate({
              width: newWidth
            }, config.animate)
            : el.width(newWidth);

        }

      }

      if (hClone) {

        if (newWidth) {
          hClone.width(newWidth);
        }

        hClone.height(0).val(value).scrollTop(10000);

        var scrollTop = hClone[0].scrollTop + config.extraSpace;

        // Don't do anything if scrollTop hasen't changed:
        if (this.previousScrollTop === scrollTop) {
          return;
        }

        this.previousScrollTop = scrollTop;

        if (scrollTop >= config.maxHeight) {
          el.css('overflowY', '');
          return;
        }

        el.css('overflowY', 'hidden');

        if (scrollTop < config.minHeight) {
          scrollTop = config.minHeight;
        }

        config.onResize.call(el);

        // Either animate or directly apply height:
        config.animate && !immediate ?
          el.stop(1,1).animate({
            height: scrollTop
          }, config.animate)
          : el.height(scrollTop);
      }
    },

    destroy: function() {
      this.unbind();
      this.el.removeData('AutoResizer');
      this.clones.remove();
      delete this.el;
      delete this.hClone;
      delete this.wClone;
      delete this.clones;
    },

    injectClone: function() {
      (
        autoResize.cloneContainer ||
          (autoResize.cloneContainer = $('<arclones/>').appendTo('body'))
        ).empty().append(this.clones); //this should be refactored so that a node is never cloned more than once
    }

  };

})(jQuery);
/**
 * SheetClip - Spreadsheet Clipboard Parser
 * version 0.2
 *
 * This tiny library transforms JavaScript arrays to strings that are pasteable by LibreOffice, OpenOffice,
 * Google Docs and Microsoft Excel.
 *
 * Copyright 2012, Marcin Warpechowski
 * Licensed under the MIT license.
 * http://github.com/warpech/sheetclip/
 */
/*jslint white: true*/
(function (global) {
  "use strict";

  function countQuotes(str) {
    return str.split('"').length - 1;
  }

  global.SheetClip = {
    parse: function (str) {
      var r, rlen, rows, arr = [], a = 0, c, clen, multiline, last;
      rows = str.split('\n');
      if (rows.length > 1 && rows[rows.length - 1] === '') {
        rows.pop();
      }
      for (r = 0, rlen = rows.length; r < rlen; r += 1) {
        rows[r] = rows[r].split('\t');
        for (c = 0, clen = rows[r].length; c < clen; c += 1) {
          if (!arr[a]) {
            arr[a] = [];
          }
          if (multiline && c === 0) {
            last = arr[a].length - 1;
            arr[a][last] = arr[a][last] + '\n' + rows[r][0];
            if (multiline && (countQuotes(rows[r][0]) & 1)) { //& 1 is a bitwise way of performing mod 2
              multiline = false;
              arr[a][last] = arr[a][last].substring(0, arr[a][last].length - 1).replace(/""/g, '"');
            }
          }
          else {
            if (c === clen - 1 && rows[r][c].indexOf('"') === 0) {
              arr[a].push(rows[r][c].substring(1).replace(/""/g, '"'));
              multiline = true;
            }
            else {
              arr[a].push(rows[r][c].replace(/""/g, '"'));
              multiline = false;
            }
          }
        }
        if (!multiline) {
          a += 1;
        }
      }
      return arr;
    },

    stringify: function (arr) {
      var r, rlen, c, clen, str = '', val;
      for (r = 0, rlen = arr.length; r < rlen; r += 1) {
        for (c = 0, clen = arr[r].length; c < clen; c += 1) {
          if (c > 0) {
            str += '\t';
          }
          val = arr[r][c];
          if (typeof val === 'string') {
            if (val.indexOf('\n') > -1) {
              str += '"' + val.replace(/"/g, '""') + '"';
            }
            else {
              str += val;
            }
          }
          else if (val === null || val === void 0) { //void 0 resolves to undefined
            str += '';
          }
          else {
            str += val;
          }
        }
        str += '\n';
      }
      return str;
    }
  };
}(window));
/**
 * walkontable 0.2.0
 *
 * Date: Mon Mar 18 2013 18:12:25 GMT+0100 (Central European Standard Time)
*/

function WalkontableBorder(instance, settings) {
  //reference to instance
  this.instance = instance;
  this.settings = settings;
  this.wtDom = this.instance.wtDom;

  this.main = document.createElement("div");
  this.main.style.position = 'absolute';
  this.main.style.top = 0;
  this.main.style.left = 0;

  for (var i = 0; i < 5; i++) {
    var DIV = document.createElement('DIV');
    DIV.className = 'wtBorder ' + (settings.className || '');
    DIV.style.backgroundColor = settings.border.color;
    DIV.style.height = settings.border.width + 'px';
    DIV.style.width = settings.border.width + 'px';
    this.main.appendChild(DIV);
  }

  this.top = this.main.childNodes[0];
  this.left = this.main.childNodes[1];
  this.bottom = this.main.childNodes[2];
  this.right = this.main.childNodes[3];

  this.corner = this.main.childNodes[4];
  this.corner.className += ' corner';
  this.corner.style.width = '5px';
  this.corner.style.height = '5px';
  this.corner.style.border = '2px solid #FFF';

  this.disappear();
  instance.wtTable.hider.appendChild(this.main);
}

/**
 * Show border around one or many cells
 * @param {Array} corners
 */
WalkontableBorder.prototype.appear = function (corners) {
  var isMultiple, $from, $to, fromOffset, toOffset, containerOffset, top, minTop, left, minLeft, height, width;
  if (this.disabled) {
    return;
  }

  var offsetRow = this.instance.getSetting('offsetRow')
    , offsetColumn = this.instance.getSetting('offsetColumn')
    , displayRows = this.instance.getSetting('displayRows')
    , displayColumns = this.instance.getSetting('displayColumns');

  var hideTop = false, hideLeft = false, hideBottom = false, hideRight = false;

  if (displayRows !== null) {
    if (corners[0] > offsetRow + displayRows - 1 || corners[2] < offsetRow) {
      hideTop = hideLeft = hideBottom = hideRight = true;
    }
    else {
      if (corners[0] < offsetRow) {
        corners[0] = offsetRow;
        hideTop = true;
      }
      if (corners[2] > offsetRow + displayRows - 1) {
        corners[2] = offsetRow + displayRows - 1;
        hideBottom = true;
      }
    }
  }

  if (displayColumns !== null) {
    if (corners[1] > offsetColumn + displayColumns - 1 || corners[3] < offsetColumn) {
      hideTop = hideLeft = hideBottom = hideRight = true;
    }
    else {
      if (corners[1] < offsetColumn) {
        corners[1] = offsetColumn;
        hideLeft = true;
      }
      if (corners[3] > offsetColumn + displayColumns - 1) {
        corners[3] = offsetColumn + displayColumns - 1;
        hideRight = true;
      }
    }
  }

  if (hideTop + hideLeft + hideBottom + hideRight < 4) { //at least one border is not hidden
    isMultiple = (corners[0] !== corners[2] || corners[1] !== corners[3]);
    $from = $(this.instance.wtTable.getCell([corners[0], corners[1]]));
    $to = isMultiple ? $(this.instance.wtTable.getCell([corners[2], corners[3]])) : $from;
    fromOffset = this.wtDom.offset($from[0]);
    toOffset = isMultiple ? this.wtDom.offset($to[0]) : fromOffset;
    containerOffset = this.wtDom.offset(this.instance.wtTable.TABLE);

    minTop = fromOffset.top;
    height = toOffset.top + $to.outerHeight() - minTop;
    minLeft = fromOffset.left;
    width = toOffset.left + $to.outerWidth() - minLeft;

    top = minTop - containerOffset.top - 1;
    left = minLeft - containerOffset.left - 1;

    if (parseInt($from.css('border-top-width'), 10) > 0) {
      top += 1;
      height -= 1;
    }
    if (parseInt($from.css('border-left-width'), 10) > 0) {
      left += 1;
      width -= 1;
    }
  }

  if (hideTop) {
    this.top.style.display = 'none';
  }
  else {
    this.top.style.top = top + 'px';
    this.top.style.left = left + 'px';
    this.top.style.width = width + 'px';
    this.top.style.display = 'block';
  }

  if (hideLeft) {
    this.left.style.display = 'none';
  }
  else {
    this.left.style.top = top + 'px';
    this.left.style.left = left + 'px';
    this.left.style.height = height + 'px';
    this.left.style.display = 'block';
  }

  var delta = Math.floor(this.settings.border.width / 2);

  if (hideBottom) {
    this.bottom.style.display = 'none';
  }
  else {
    this.bottom.style.top = top + height - delta + 'px';
    this.bottom.style.left = left + 'px';
    this.bottom.style.width = width + 'px';
    this.bottom.style.display = 'block';
  }

  if (hideRight) {
    this.right.style.display = 'none';
  }
  else {
    this.right.style.top = top + 'px';
    this.right.style.left = left + width - delta + 'px';
    this.right.style.height = height + 1 + 'px';
    this.right.style.display = 'block';
  }

  if (hideBottom && hideRight || !this.hasSetting(this.settings.border.cornerVisible)) {
    this.corner.style.display = 'none';
  }
  else {
    this.corner.style.top = top + height - 4 + 'px';
    this.corner.style.left = left + width - 4 + 'px';
    this.corner.style.display = 'block';
  }
};

/**
 * Hide border
 */
WalkontableBorder.prototype.disappear = function () {
  this.top.style.display = 'none';
  this.left.style.display = 'none';
  this.bottom.style.display = 'none';
  this.right.style.display = 'none';
  this.corner.style.display = 'none';
};

WalkontableBorder.prototype.hasSetting = function (setting) {
  if (typeof setting === 'function') {
    return setting();
  }
  return !!setting;
};
function Walkontable(settings) {
  var originalHeaders = [];

  //bootstrap from settings
  this.wtSettings = new WalkontableSettings(this, settings);
  this.wtDom = new WalkontableDom(this);
  this.wtTable = new WalkontableTable(this);
  this.wtScroll = new WalkontableScroll(this);
  this.wtWheel = new WalkontableWheel(this);
  this.wtEvent = new WalkontableEvent(this);

  //find original headers
  if (this.wtTable.THEAD.childNodes.length && this.wtTable.THEAD.childNodes[0].childNodes.length) {
    for (var c = 0, clen = this.wtTable.THEAD.childNodes[0].childNodes.length; c < clen; c++) {
      originalHeaders.push(this.wtTable.THEAD.childNodes[0].childNodes[c].innerHTML);
    }
    if (!this.hasSetting('columnHeaders')) {
      this.update('columnHeaders', function (column, TH) {
        TH.innerHTML = originalHeaders[column];
      });
    }
  }

  //initialize selections
  this.selections = {};
  var selectionsSettings = this.getSetting('selections');
  if (selectionsSettings) {
    for (var i in selectionsSettings) {
      if (selectionsSettings.hasOwnProperty(i)) {
        this.selections[i] = new WalkontableSelection(this, selectionsSettings[i]);
      }
    }
  }

  this.drawn = false;
}

Walkontable.prototype.draw = function (selectionsOnly) {
  //this.instance.scrollViewport([this.instance.getSetting('offsetRow'), this.instance.getSetting('offsetColumn')]); //needed by WalkontableScroll -> remove row from the last scroll page should scroll viewport a row up if needed
  if (this.hasSetting('async')) {
    var that = this;
    that.drawTimeout = setTimeout(function () {
      that._doDraw(selectionsOnly);
    }, 0);
  }
  else {
    this._doDraw(selectionsOnly);
  }
  return this;
};

Walkontable.prototype._doDraw = function (selectionsOnly) {
  selectionsOnly = selectionsOnly && this.getSetting('offsetRow') === this.lastOffsetRow && this.getSetting('offsetColumn') === this.lastOffsetColumn;
  this.lastOffsetRow = this.getSetting('offsetRow');
  this.lastOffsetColumn = this.getSetting('offsetColumn');
  this.wtTable.draw(selectionsOnly);
  this.getSetting('onDraw');
};

Walkontable.prototype.update = function (settings, value) {
  return this.wtSettings.update(settings, value);
};

Walkontable.prototype.scrollVertical = function (delta) {
  return this.wtScroll.scrollVertical(delta);
};

Walkontable.prototype.scrollHorizontal = function (delta) {
  return this.wtScroll.scrollHorizontal(delta);
};

Walkontable.prototype.scrollViewport = function (coords) {
  if (this.hasSetting('async')) {
    var that = this;
    clearTimeout(that.scrollTimeout);
    that.scrollTimeout = setTimeout(function () {
      that.wtScroll.scrollViewport(coords);
    }, 0);
  }
  else {
    this.wtScroll.scrollViewport(coords);
  }
  return this;
};

Walkontable.prototype.getViewport = function () {
  //TODO change it to draw values only (add this.wtTable.visibilityStartRow, this.wtTable.visibilityStartColumn)
  return [
    this.getSetting('offsetRow'),
    this.getSetting('offsetColumn'),
    this.wtTable.visibilityEdgeRow !== null ? this.wtTable.visibilityEdgeRow : this.getSetting('totalRows') - 1,
    this.wtTable.visibilityEdgeColumn !== null ? this.wtTable.visibilityEdgeColumn : this.getSetting('totalColumns') - 1
  ];
};

Walkontable.prototype.getSetting = function (key, param1, param2, param3) {
  return this.wtSettings.getSetting(key, param1, param2, param3);
};

Walkontable.prototype.hasSetting = function (key) {
  return this.wtSettings.has(key);
};

Walkontable.prototype.destroy = function () {
  clearTimeout(this.drawTimeout);
  clearTimeout(this.scrollTimeout);
  clearTimeout(this.wheelTimeout);
  clearTimeout(this.dblClickTimeout);
  clearTimeout(this.selectionsTimeout);
};
function WalkontableDom(instance) {
  if (instance) {
    this.instance = instance;
  }
  this.tdCache = [];
}

//goes up the DOM tree (including given element) until it finds an element that matches the nodeName
WalkontableDom.prototype.closest = function (elem, nodeNames) {
  while (elem != null) {
    if (elem.nodeType === 1 && nodeNames.indexOf(elem.nodeName) > -1) {
      return elem;
    }
    elem = elem.parentNode;
  }
  return null;
};

WalkontableDom.prototype.prevSiblings = function (elem) {
  var out = [];
  while ((elem = elem.previousSibling) != null) {
    if (elem.nodeType === 1) {
      out.push(elem);
    }
  }
  return out;
};

WalkontableDom.prototype.tdHasClass = function (trIndex, tdIndex, cls) {
  return !!(this.tdCache[trIndex] && this.tdCache[trIndex][tdIndex] && this.tdCache[trIndex][tdIndex][cls]);
};

WalkontableDom.prototype.tdAddClass = function (trIndex, tdIndex, cls) {
  if (!this.tdHasClass(trIndex, tdIndex, cls)) {
    if (!this.tdCache[trIndex]) {
      this.tdCache[trIndex] = [];
    }
    if (!this.tdCache[trIndex][tdIndex]) {
      this.tdCache[trIndex][tdIndex] = {};
      this.tdCache[trIndex][tdIndex]._node = this.instance.wtTable.getCell([trIndex + this.instance.getSetting('offsetRow'), tdIndex + this.instance.getSetting('offsetColumn')]);
    }
    this.tdCache[trIndex][tdIndex]._node.className += " " + cls;
    this.tdCache[trIndex][tdIndex][cls] = true;
  }
};

WalkontableDom.prototype.tdRemoveClass = function (trIndex, tdIndex, cls) {
  if (this.tdHasClass(trIndex, tdIndex, cls)) {
    var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
    this.tdCache[trIndex][tdIndex]._node.className = this.tdCache[trIndex][tdIndex]._node.className.replace(reg, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, ''); //last 2 replaces do right trim (see http://blog.stevenlevithan.com/archives/faster-trim-javascript)
    this.tdCache[trIndex][tdIndex][cls] = false;
  }
};

WalkontableDom.prototype.tdResetCache = function () {
  for (var i in this.tdCache) {
    if (this.tdCache.hasOwnProperty(i)) {
      for (var j in this.tdCache[i]) {
        if (this.tdCache[i].hasOwnProperty(j)) {
          for (var k in this.tdCache[i][j]) {
            if (this.tdCache[i][j].hasOwnProperty(k)) {
              if (k !== '_node') {
                this.tdCache[i][j][k] = false;
              }
            }
          }
        }
      }
    }
  }
};

//http://snipplr.com/view/3561/addclass-removeclass-hasclass/
WalkontableDom.prototype.hasClass = function (ele, cls) {
  return ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'));
};

WalkontableDom.prototype.addClass = function (ele, cls) {
  if (!this.hasClass(ele, cls)) ele.className += " " + cls;
};

WalkontableDom.prototype.removeClass = function (ele, cls) {
  if (this.hasClass(ele, cls)) { //is this really needed?
    var reg = new RegExp('(\\s|^)' + cls + '(\\s|$)');
    ele.className = ele.className.replace(reg, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, ''); //last 2 replaces do right trim (see http://blog.stevenlevithan.com/archives/faster-trim-javascript)
  }
};

/*//http://net.tutsplus.com/tutorials/javascript-ajax/javascript-from-null-cross-browser-event-binding/
 WalkontableDom.prototype.addEvent = (function () {
 var that = this;
 if (document.addEventListener) {
 return function (elem, type, cb) {
 if ((elem && !elem.length) || elem === window) {
 elem.addEventListener(type, cb, false);
 }
 else if (elem && elem.length) {
 var len = elem.length;
 for (var i = 0; i < len; i++) {
 that.addEvent(elem[i], type, cb);
 }
 }
 };
 }
 else {
 return function (elem, type, cb) {
 if ((elem && !elem.length) || elem === window) {
 elem.attachEvent('on' + type, function () {

 //normalize
 //http://stackoverflow.com/questions/4643249/cross-browser-event-object-normalization
 var e = window['event'];
 e.target = e.srcElement;
 //e.offsetX = e.layerX;
 //e.offsetY = e.layerY;
 e.relatedTarget = e.relatedTarget || e.type == 'mouseover' ? e.fromElement : e.toElement;
 if (e.target.nodeType === 3) e.target = e.target.parentNode; //Safari bug

 return cb.call(elem, e)
 });
 }
 else if (elem.length) {
 var len = elem.length;
 for (var i = 0; i < len; i++) {
 that.addEvent(elem[i], type, cb);
 }
 }
 };
 }
 })();

 WalkontableDom.prototype.triggerEvent = function (element, eventName, target) {
 var event;
 if (document.createEvent) {
 event = document.createEvent("MouseEvents");
 event.initEvent(eventName, true, true);
 } else {
 event = document.createEventObject();
 event.eventType = eventName;
 }

 event.eventName = eventName;
 event.target = target;

 if (document.createEvent) {
 target.dispatchEvent(event);
 } else {
 target.fireEvent("on" + event.eventType, event);
 }
 };*/

WalkontableDom.prototype.removeTextNodes = function (elem, parent) {
  if (elem.nodeType === 3) {
    parent.removeChild(elem); //bye text nodes!
  }
  else if (['TABLE', 'THEAD', 'TBODY', 'TFOOT', 'TR'].indexOf(elem.nodeName) > -1) {
    var childs = elem.childNodes;
    for (var i = childs.length - 1; i >= 0; i--) {
      this.removeTextNodes(childs[i], elem);
    }
  }
};

// Remove childs function
// WARNING - this doesn't unload events and data attached by jQuery
// http://jsperf.com/jquery-html-vs-empty-vs-innerhtml/9
WalkontableDom.prototype.empty = function (element) {
  var child;
  while (child = element.lastChild) {
    element.removeChild(child);
  }
};


/**
 * seems getBounding is usually faster: http://jsperf.com/offset-vs-getboundingclientrect/4
 * but maybe offset + cache would work?
 * edit: after more tests turns out offsetLeft/Top is faster
 */
/*WalkontableDom.prototype.offset = function (elem) {
 var rect = elem.getBoundingClientRect();
 return {
 top: rect.top + document.documentElement.scrollTop,
 left: rect.left + document.documentElement.scrollLeft
 };
 };*/

/*
 WalkontableDom.prototype.offsetLeft = function (elem) {
 var offset = elem.offsetLeft;
 while (elem = elem.offsetParent) {
 offset += elem.offsetLeft;
 }
 return offset;
 };

 WalkontableDom.prototype.offsetTop = function (elem) {
 var offset = elem.offsetTop;
 while (elem = elem.offsetParent) {
 offset += elem.offsetTop;
 }
 return offset;
 };*/

WalkontableDom.prototype.offset = function (elem) {
  var offsetLeft = elem.offsetLeft
    , offsetTop = elem.offsetTop;
  while (elem = elem.offsetParent) {
    offsetLeft += elem.offsetLeft;
    offsetTop += elem.offsetTop;
  }
  return {
    left: offsetLeft,
    top: offsetTop
  };
};
function WalkontableEvent(instance) {
  var that = this;

  //reference to instance
  this.instance = instance;

  this.wtDom = this.instance.wtDom;

  var dblClickOrigin = [null, null, null, null];
  this.instance.dblClickTimeout = null;

  var onMouseDown = function (event) {
    var cell = that.parentCell(event.target);

    if (cell.TD && cell.TD.nodeName === 'TD') {
      if (that.instance.hasSetting('onCellMouseDown')) {
        that.instance.getSetting('onCellMouseDown', event, cell.coords, cell.TD);
      }
    }
    else if (that.wtDom.hasClass(event.target, 'corner')) {
      that.instance.getSetting('onCellCornerMouseDown', event, event.target);
    }

    if (event.button !== 2) { //if not right mouse button
      if (cell.TD && cell.TD.nodeName === 'TD') {
        dblClickOrigin.shift();
        dblClickOrigin.push(cell.TD);
      }
      else if (that.wtDom.hasClass(event.target, 'corner')) {
        dblClickOrigin.shift();
        dblClickOrigin.push(event.target);
      }
    }
  };

  var lastMouseOver;
  var onMouseOver = function (event) {
    if (that.instance.hasSetting('onCellMouseOver')) {
      var TD = that.wtDom.closest(event.target, ['TD', 'TH']);
      if (TD && TD !== lastMouseOver) {
        lastMouseOver = TD;
        if (TD.nodeName === 'TD') {
          that.instance.getSetting('onCellMouseOver', event, that.instance.wtTable.getCoords(TD), TD);
        }
      }
    }
  };

  var onMouseUp = function (event) {
    if (event.button !== 2) { //if not right mouse button
      var cell = that.parentCell(event.target);

      if (cell.TD && cell.TD.nodeName === 'TD') {
        dblClickOrigin.shift();
        dblClickOrigin.push(cell.TD);
      }
      else {
        dblClickOrigin.shift();
        dblClickOrigin.push(event.target);
      }

      if (dblClickOrigin[3] !== null && dblClickOrigin[3] === dblClickOrigin[2]) {
        if (that.instance.dblClickTimeout && dblClickOrigin[2] === dblClickOrigin[1] && dblClickOrigin[1] === dblClickOrigin[0]) {
          if (cell.TD) {
            that.instance.getSetting('onCellDblClick', event, cell.coords, cell.TD);
          }
          else if (that.wtDom.hasClass(event.target, 'corner')) {
            that.instance.getSetting('onCellCornerDblClick', event, cell.coords, cell.TD);
          }

          clearTimeout(that.instance.dblClickTimeout);
          that.instance.dblClickTimeout = null;
        }
        else {
          clearTimeout(that.instance.dblClickTimeout);
          that.instance.dblClickTimeout = setTimeout(function () {
            that.instance.dblClickTimeout = null;
          }, 500);
        }
      }
    }
  };

  $(this.instance.wtTable.parent).on('mousedown', onMouseDown);
  $(this.instance.wtTable.TABLE).on('mouseover', onMouseOver);
  $(this.instance.wtTable.parent).on('mouseup', onMouseUp);
}

WalkontableEvent.prototype.parentCell = function (elem) {
  var cell = {};
  cell.TD = this.wtDom.closest(elem, ['TD', 'TH']);
  if (cell.TD) {
    cell.coords = this.instance.wtTable.getCoords(cell.TD);
  }
  else if (!cell.TD && this.wtDom.hasClass(elem, 'wtBorder') && this.wtDom.hasClass(elem, 'current') && !this.wtDom.hasClass(elem, 'corner')) {
    cell.coords = this.instance.selections.current.selected[0];
    cell.TD = this.instance.wtTable.getCell(cell.coords);
  }
  return cell;
};
//http://stackoverflow.com/questions/3629183/why-doesnt-indexof-work-on-an-array-ie8
if (!Array.prototype.indexOf) {
  Array.prototype.indexOf = function (elt /*, from*/) {
    var len = this.length >>> 0;

    var from = Number(arguments[1]) || 0;
    from = (from < 0)
      ? Math.ceil(from)
      : Math.floor(from);
    if (from < 0)
      from += len;

    for (; from < len; from++) {
      if (from in this &&
        this[from] === elt)
        return from;
    }
    return -1;
  };
}

/**
 * http://notes.jetienne.com/2011/05/18/cancelRequestAnimFrame-for-paul-irish-requestAnimFrame.html
 */
window.requestAnimFrame = (function () {
  return  window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.oRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function (/* function */ callback, /* DOMElement */ element) {
      return window.setTimeout(callback, 1000 / 60);
    };
})();

window.cancelRequestAnimFrame = (function () {
  return window.cancelAnimationFrame ||
    window.webkitCancelRequestAnimationFrame ||
    window.mozCancelRequestAnimationFrame ||
    window.oCancelRequestAnimationFrame ||
    window.msCancelRequestAnimationFrame ||
    clearTimeout
})();
function WalkontableScroll(instance) {
  this.instance = instance;
  this.wtScrollbarV = new WalkontableScrollbar(instance, 'vertical');
  this.wtScrollbarH = new WalkontableScrollbar(instance, 'horizontal');
}

WalkontableScroll.prototype.refreshScrollbars = function () {
  this.wtScrollbarH.prepare();
  this.wtScrollbarV.prepare();
  this.instance.wtTable.recalcViewportCells();
  this.wtScrollbarH.refresh();
  this.wtScrollbarV.refresh();
};

WalkontableScroll.prototype.scrollVertical = function (delta) {
  if (!this.instance.drawn) {
    throw new Error('scrollVertical can only be called after table was drawn to DOM');
  }

  var offsetRow = this.instance.getSetting('offsetRow')
    , newOffsetRow = offsetRow + delta;

  if (newOffsetRow > 0) {
    var totalRows = this.instance.getSetting('totalRows');
    var height = (this.instance.getSetting('height') || Infinity) - this.instance.getSetting('scrollbarHeight'); //Infinity is needed, otherwise you could scroll a table that did not have height specified

    if (newOffsetRow >= totalRows) {
      newOffsetRow = totalRows - 1;
    }

    var TD = this.instance.wtTable.TBODY.firstChild.firstChild;
    if (TD.nodeName === 'TH') {
      TD = TD.nextSibling;
    }
    var cellOffset = this.instance.wtDom.offset(TD);
    var tableOffset = this.instance.wtTable.tableOffset;

    var sum = cellOffset.top - tableOffset.top;
    var row = newOffsetRow;
    while (sum < height && row < totalRows) {
      sum += this.instance.getSetting('rowHeight', row);
      row++;
    }

    if (sum < height) {
      while (newOffsetRow > 0) {
        //if sum still less than available height, we cannot scroll that far (must move offset up)
        sum += this.instance.getSetting('rowHeight', newOffsetRow - 1);
        if (sum < height) {
          newOffsetRow--;
        }
        else {
          break;
        }
      }
    }
  }
  else if (newOffsetRow < 0) {
    newOffsetRow = 0;
  }

  if (newOffsetRow !== offsetRow) {
    this.instance.update('offsetRow', newOffsetRow);
  }
  return this.instance;
};

WalkontableScroll.prototype.scrollHorizontal = function (delta) {
  if (!this.instance.drawn) {
    throw new Error('scrollHorizontal can only be called after table was drawn to DOM');
  }

  var offsetColumn = this.instance.getSetting('offsetColumn')
    , newOffsetColumn = offsetColumn + delta;

  if (newOffsetColumn > 0) {
    var totalColumns = this.instance.getSetting('totalColumns');
    var width = this.instance.getSetting('width');

    if (newOffsetColumn >= totalColumns) {
      newOffsetColumn = totalColumns - 1;
    }

    var TD = this.instance.wtTable.TBODY.firstChild.firstChild;
    if (TD.nodeName === 'TH') {
      TD = TD.nextSibling;
    }
    var cellOffset = this.instance.wtDom.offset(TD);
    var tableOffset = this.instance.wtTable.tableOffset;

    var sum = cellOffset.left - tableOffset.left;
    var col = newOffsetColumn;
    while (sum < width && col < totalColumns) {
      sum += this.instance.getSetting('columnWidth', col);
      col++;
    }

    if (sum < width) {
      while (newOffsetColumn > 0) {
        //if sum still less than available width, we cannot scroll that far (must move offset to the left)
        sum += this.instance.getSetting('columnWidth', newOffsetColumn - 1);
        if (sum < width) {
          newOffsetColumn--;
        }
        else {
          break;
        }
      }
    }
  }
  else if (newOffsetColumn < 0) {
    newOffsetColumn = 0;
  }

  if (newOffsetColumn !== offsetColumn) {
    this.instance.update('offsetColumn', newOffsetColumn);
  }
  return this.instance;
};

/**
 * Scrolls viewport to a cell by minimum number of cells
 */
WalkontableScroll.prototype.scrollViewport = function (coords) {
  var offsetRow = this.instance.getSetting('offsetRow')
    , offsetColumn = this.instance.getSetting('offsetColumn')
    , viewportRows = this.instance.getSetting('viewportRows')
    , viewportColumns = this.instance.getSetting('viewportColumns')
    , totalRows = this.instance.getSetting('totalRows')
    , totalColumns = this.instance.getSetting('totalColumns');

  if (coords[0] < 0 || coords[0] > totalRows - 1) {
    throw new Error('row ' + coords[0] + ' does not exist');
  }
  else if (coords[1] < 0 || coords[1] > totalColumns - 1) {
    throw new Error('column ' + coords[1] + ' does not exist');
  }

  viewportRows = viewportRows || 1; //for cells larger than viewport it reports 0, but we still have to treat it like visible cell
  viewportColumns = viewportColumns || 1;

  if (viewportRows < totalRows) {
    if (coords[0] > offsetRow + viewportRows - 1) {
      this.scrollVertical(coords[0] - (offsetRow + viewportRows - 1));
    }
    else if (coords[0] < offsetRow) {
      this.scrollVertical(coords[0] - offsetRow);
    }
    else {
      this.scrollVertical(0); //Craig's issue: remove row from the last scroll page should scroll viewport a row up if needed
    }
  }
  else {
    //this.scrollVertical(coords[0] - offsetRow); //this should not be needed anymore
  }

  if (viewportColumns > 0 && viewportColumns < totalColumns) {
    if (coords[1] > offsetColumn + viewportColumns - 1) {
      this.scrollHorizontal(coords[1] - (offsetColumn + viewportColumns - 1));
    }
    else if (coords[1] < offsetColumn) {
      this.scrollHorizontal(coords[1] - offsetColumn);
    }
    else {
      this.scrollHorizontal(0); //Craig's issue
    }
  }
  else {
    //this.scrollHorizontal(coords[1] - offsetColumn); //this should not be needed anymore
  }

  return this.instance;
};
function WalkontableScrollbar(instance, type) {
  var that = this;

  //reference to instance
  this.instance = instance;
  this.type = type;
  this.$table = $(this.instance.wtTable.TABLE);

  //create elements
  this.slider = document.createElement('DIV');
  this.slider.style.position = 'absolute';
  this.slider.style.top = '0';
  this.slider.style.left = '0';
  this.slider.style.display = 'none';
  this.slider.className = 'dragdealer ' + type;

  this.handle = document.createElement('DIV');
  this.handle.className = 'handle';

  this.slider.appendChild(this.handle);
  this.instance.wtTable.parent.appendChild(this.slider);

  var firstRun = true;
  this.dragTimeout = null;
  var dragDelta;
  var dragRender = function () {
    that.onScroll(dragDelta);
  };

  this.dragdealer = new Dragdealer(this.slider, {
    vertical: (type === 'vertical'),
    horizontal: (type === 'horizontal'),
    slide: false,
    speed: 100,
    animationCallback: function (x, y) {
      if (firstRun) {
        firstRun = false;
        return;
      }
      that.skipRefresh = true;
      dragDelta = type === 'vertical' ? y : x;
      if (that.dragTimeout === null) {
        that.dragTimeout = setInterval(dragRender, 100);
        dragRender();
      }
    },
    callback: function (x, y) {
      that.skipRefresh = false;
      clearInterval(that.dragTimeout);
      that.dragTimeout = null;
      dragDelta = type === 'vertical' ? y : x;
      that.onScroll(dragDelta);
    }
  });
  that.skipRefresh = false;
}

WalkontableScrollbar.prototype.onScroll = function (delta) {
  if (this.instance.drawn) {
    var keys = this.type === 'vertical' ? ['offsetRow', 'totalRows', 'viewportRows', 'top', 'height'] : ['offsetColumn', 'totalColumns', 'viewportColumns', 'left', 'width'];
    var total = this.instance.getSetting(keys[1]);
    var display = this.instance.getSetting(keys[2]);
    if (total > display) {
      var newOffset = Math.round(parseInt(this.handle.style[keys[3]], 10) * total / parseInt(this.slider.style[keys[4]], 10)); //offset = handlePos * totalRows / offsetRows

      if (delta === 1) {
        if (this.type === 'vertical') {
          this.instance.scrollVertical(Infinity).draw();
        }
        else {
          this.instance.scrollHorizontal(Infinity).draw();
        }
      }
      else if (newOffset !== this.instance.getSetting(keys[0])) { //is new offset different than old offset
        if (this.type === 'vertical') {
          this.instance.scrollVertical(newOffset - this.instance.getSetting(keys[0])).draw();
        }
        else {
          this.instance.scrollHorizontal(newOffset - this.instance.getSetting(keys[0])).draw();
        }
      }
      else {
        this.refresh();
      }
    }
  }
};

/**
 * Returns what part of the scroller should the handle take
 * @param viewportCount {Number} number of visible rows or columns
 * @param totalCount {Number} total number of rows or columns
 * @return {Number} 0..1
 */
WalkontableScrollbar.prototype.getHandleSizeRatio = function (viewportCount, totalCount) {
  if (!totalCount) {
    return 1;
  }
  if (viewportCount > totalCount) { //it exists in code since long time, but does it even happen
    viewportCount = totalCount;
  }
  return viewportCount / totalCount;
};

WalkontableScrollbar.prototype.prepare = function () {
  if (this.skipRefresh) {
    return;
  }
  var ratio
    , scroll;

  if (this.type === 'vertical') {
    ratio = this.getHandleSizeRatio(this.instance.getSetting('viewportRows'), this.instance.getSetting('totalRows'));
    scroll = this.instance.getSetting('scrollV');

  }
  else {
    ratio = this.getHandleSizeRatio(this.instance.getSetting('viewportColumns'), this.instance.getSetting('totalColumns'));
    scroll = this.instance.getSetting('scrollH');
  }

  if (((ratio === 1 || isNaN(ratio)) && scroll === 'auto') || scroll === 'none') {
    //isNaN is needed because ratio equals NaN when totalRows/totalColumns equals 0
    this.visible = false;
  }
  else {
    this.visible = true;
  }
};

WalkontableScrollbar.prototype.refresh = function () {
  if (this.skipRefresh) {
    return;
  }
  else if (!this.visible) {
    this.slider.style.display = 'none';
    return;
  }

  var ratio
    , delta
    , sliderSize
    , handleSize
    , handlePosition
    , offsetCount
    , totalCount
    , tableOuterWidth = this.$table.outerWidth()
    , tableOuterHeight = this.$table.outerHeight()
    , tableWidth = this.instance.hasSetting('width') ? this.instance.getSetting('width') : tableOuterWidth
    , tableHeight = this.instance.hasSetting('height') ? this.instance.getSetting('height') : tableOuterHeight;

  if (!tableWidth) {
    //throw new Error("I could not compute table width. Is the <table> element attached to the DOM?");
    return;
  }
  if (!tableHeight) {
    //throw new Error("I could not compute table height. Is the <table> element attached to the DOM?");
    return;
  }

  if (this.instance.hasSetting('width') && this.instance.wtScroll.wtScrollbarV.visible) {
    tableWidth -= this.instance.getSetting('scrollbarWidth');
  }
  if (tableWidth > tableOuterWidth + this.instance.getSetting('scrollbarWidth')) {
    tableWidth = tableOuterWidth;
  }

  if (this.instance.hasSetting('height') && this.instance.wtScroll.wtScrollbarH.visible) {
    tableHeight -= this.instance.getSetting('scrollbarHeight');
  }
  if (tableHeight > tableOuterHeight + this.instance.getSetting('scrollbarHeight')) {
    tableHeight = tableOuterHeight;
  }

  if (this.type === 'vertical') {
    offsetCount = this.instance.getSetting('offsetRow');
    totalCount = this.instance.getSetting('totalRows');
    ratio = this.getHandleSizeRatio(this.instance.getSetting('viewportRows'), totalCount);

    sliderSize = tableHeight - 2; //2 is sliders border-width

    this.slider.style.top = this.$table.position().top + 'px';
    this.slider.style.left = tableWidth - 1 + 'px'; //1 is sliders border-width
    this.slider.style.height = sliderSize + 'px';
  }
  else { //horizontal
    offsetCount = this.instance.getSetting('offsetColumn');
    totalCount = this.instance.getSetting('totalColumns');
    ratio = this.getHandleSizeRatio(this.instance.getSetting('viewportColumns'), totalCount);

    sliderSize = tableWidth - 2; //2 is sliders border-width

    this.slider.style.left = this.$table.position().left + 'px';
    this.slider.style.top = tableHeight - 1 + 'px'; //1 is sliders border-width
    this.slider.style.width = sliderSize + 'px';
  }

  handleSize = Math.round(sliderSize * ratio);
  if (handleSize < 10) {
    handleSize = 15;
  }

  handlePosition = Math.round(sliderSize * (offsetCount / totalCount));
  if ((delta = tableWidth - handleSize) > 0 && handlePosition > delta) {
    handlePosition = delta;
  }

  if (this.type === 'vertical') {
    this.handle.style.height = handleSize + 'px';
    this.handle.style.top = handlePosition + 'px';

  }
  else { //horizontal
    this.handle.style.width = handleSize + 'px';
    this.handle.style.left = handlePosition + 'px';
  }

  this.slider.style.display = 'block';

  this.dragdealer.setWrapperOffset();
  this.dragdealer.setBounds();
};
function WalkontableSelection(instance, settings) {
  this.instance = instance;
  this.settings = settings;
  this.selected = [];
  this.wtDom = new WalkontableDom(this.instance);
  if (settings.border) {
    this.border = new WalkontableBorder(instance, settings);
  }
}

WalkontableSelection.prototype.add = function (coords) {
  this.selected.push(coords);
};

WalkontableSelection.prototype.remove = function (coords) {
  var index = this.isSelected(coords);
  if (index > -1) {
    this.selected.splice(index, 1);
  }
};

WalkontableSelection.prototype.clear = function () {
  this.selected.length = 0; //http://jsperf.com/clear-arrayxxx
};

WalkontableSelection.prototype.isSelected = function (coords) {
  for (var i = 0, ilen = this.selected.length; i < ilen; i++) {
    if (this.selected[i][0] === coords[0] && this.selected[i][1] === coords[1]) {
      return i;
    }
  }
  return -1;
};

WalkontableSelection.prototype.getSelected = function () {
  return this.selected;
};

/**
 * Returns the top left (TL) and bottom right (BR) selection coordinates
 * @returns {Object}
 */
WalkontableSelection.prototype.getCorners = function () {
  var minRow
    , minColumn
    , maxRow
    , maxColumn
    , i
    , ilen = this.selected.length;

  if (ilen > 0) {
    minRow = maxRow = this.selected[0][0];
    minColumn = maxColumn = this.selected[0][1];

    if (ilen > 1) {
      for (i = 1; i < ilen; i++) {
        if (this.selected[i][0] < minRow) {
          minRow = this.selected[i][0];
        }
        else if (this.selected[i][0] > maxRow) {
          maxRow = this.selected[i][0];
        }

        if (this.selected[i][1] < minColumn) {
          minColumn = this.selected[i][1];
        }
        else if (this.selected[i][1] > maxColumn) {
          maxColumn = this.selected[i][1];
        }
      }
    }
  }

  return [minRow, minColumn, maxRow, maxColumn];
};

WalkontableSelection.prototype.draw = function (selectionsOnly) {
  var corners, r, c;

  var offsetRow = this.instance.getSetting('offsetRow')
    , lastVisibleRow = offsetRow + this.instance.getSetting('displayRows') - 1
    , offsetColumn = this.instance.getSetting('offsetColumn')
    , lastVisibleColumn = offsetColumn + this.instance.getSetting('displayColumns') - 1;

  if (this.selected.length) {
    corners = this.getCorners();

    for (r = offsetRow; r <= lastVisibleRow; r++) {
      for (c = offsetColumn; c <= lastVisibleColumn; c++) {
        if (r >= corners[0] && r <= corners[2] && c >= corners[1] && c <= corners[3]) {
          //selected cell
          this.settings.highlightRowClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightRowClassName);
          this.settings.highlightColumnClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightColumnClassName);
          this.settings.className && this.wtDom.tdAddClass(r - offsetRow, c - offsetColumn, this.settings.className);
        }
        else if (r >= corners[0] && r <= corners[2]) {
          //selection is in this row
          this.settings.highlightColumnClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightColumnClassName);
          this.settings.highlightRowClassName && this.wtDom.tdAddClass(r - offsetRow, c - offsetColumn, this.settings.highlightRowClassName);
          this.settings.className && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.className);
        }
        else if (c >= corners[1] && c <= corners[3]) {
          //selection is in this column
          this.settings.highlightRowClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightRowClassName);
          this.settings.highlightColumnClassName && this.wtDom.tdAddClass(r - offsetRow, c - offsetColumn, this.settings.highlightColumnClassName);
          this.settings.className && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.className);
        }
        else {
          //no selection
          this.settings.highlightRowClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightRowClassName);
          this.settings.highlightColumnClassName && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.highlightColumnClassName);
          this.settings.className && this.wtDom.tdRemoveClass(r - offsetRow, c - offsetColumn, this.settings.className);
        }
      }
    }

    this.border && this.border.appear(corners);
  }
  else {
    if (selectionsOnly) {
      for (r = 0; r <= lastVisibleRow - offsetRow; r++) {
        for (c = 0; c <= lastVisibleColumn - offsetColumn; c++) {
          this.settings.highlightRowClassName && this.wtDom.tdRemoveClass(r, c, this.settings.highlightRowClassName);
          this.settings.highlightColumnClassName && this.wtDom.tdRemoveClass(r, c, this.settings.highlightColumnClassName);
          this.settings.className && this.wtDom.tdRemoveClass(r, c, this.settings.className);
        }
      }
    }

    this.border && this.border.disappear();
  }
};

/*WalkontableSelection.prototype.rectangleSize = function () {
 var that = this
 , rowLengths = {}
 , rowBegins = {}
 , rowEnds = {}
 , row
 , col
 , rowSpan
 , colSpan
 , lastRow
 , i
 , ilen
 , j
 , height = 0
 , tableSection
 , lastTableSection;

 this.selected.sort(function (a, b) {
 return that.wtCell.colIndex(a) - that.wtCell.colIndex(b);
 });

 this.selected.sort(function (a, b) {
 return that.wtCell.rowIndex(a) - that.wtCell.rowIndex(b);
 });

 for (i = 0, ilen = this.selected.length; i < ilen; i++) {
 tableSection = this.wtDom.closestParent(this.selected[i], ['THEAD', 'TBODY', 'TFOOT', 'TABLE']);
 if(lastTableSection && lastTableSection !== tableSection) {
 return null; //can only select cells that are in the same section (thead, tbody, tfoot or table if none of them is defined)
 }
 lastTableSection = tableSection;

 row = this.wtCell.rowIndex(this.selected[i]);
 col = this.wtCell.colIndex(this.selected[i]);
 rowSpan = this.selected[i].rowSpan;
 colSpan = this.selected[i].colSpan;
 for (j = 0; j < rowSpan; j++) {
 if (typeof rowBegins[row + j] === 'undefined' || col < rowBegins[row + j]) {
 rowBegins[row + j] = col;
 }
 if (typeof rowEnds[row + j] === 'undefined' || col + colSpan - 1 > rowEnds[row + j]) {
 rowEnds[row + j] = col + colSpan - 1;
 }
 if (typeof rowLengths[row + j] === 'undefined') {
 rowLengths[row + j] = 0;
 height++;
 }
 rowLengths[row + j] += colSpan;
 }
 }

 if (!ilen) {
 return null; //empty selection
 }

 lastRow = -1;
 for (i in rowBegins) {
 if (rowBegins.hasOwnProperty(i)) {
 if (lastRow !== -1 && rowBegins[i] !== lastRow) {
 return null; //selected rows begin in different column
 }
 lastRow = rowBegins[i];
 }
 }

 lastRow = -1;
 for (i in rowEnds) {
 if (rowEnds.hasOwnProperty(i)) {
 if (lastRow !== -1 && rowEnds[i] !== lastRow) {
 return null; //selected rows end in different column
 }
 if (rowEnds[i] !== rowBegins[i] + rowLengths[i] - 1) {
 return null; //selected rows end does not match begin + length
 }
 lastRow = rowEnds[i];
 }
 }

 lastRow = -1;
 for (i in rowLengths) {
 if (rowLengths.hasOwnProperty(i)) {
 if (lastRow !== -1 && rowLengths[i] !== lastRow) {
 return null; //selected rows have different length
 }
 if (lastRow !== -1 && !rowLengths.hasOwnProperty(i - 1)) {
 return null; //there is a row gap in selection
 }
 lastRow = rowLengths[i];
 }
 }

 return {width: lastRow, height: height};
 };*/
function WalkontableSettings(instance, settings) {
  var that = this;
  this.instance = instance;

  //default settings. void 0 means it is required, null means it can be empty
  this.defaults = {
    table: void 0,

    //presentation mode
    async: false,
    scrollH: 'auto', //values: scroll (always show scrollbar), auto (show scrollbar if table does not fit in the container), none (never show scrollbar)
    scrollV: 'auto', //values: see above
    stretchH: 'hybrid', //values: hybrid, all, last, none
    currentRowClassName: null,
    currentColumnClassName: null,

    //data source
    data: void 0,
    offsetRow: 0,
    offsetColumn: 0,
    frozenColumns: null,
    columnHeaders: null, //this must be a function in format: function (col, TH) {}
    totalRows: void 0,
    totalColumns: void 0,
    width: null,
    height: null,
    cellRenderer: function (row, column, TD) {
      var cellData = that.getSetting('data', row, column);
      if (cellData !== void 0) {
        TD.innerHTML = cellData;
      }
      else {
        this.wtDom.empty(TD);
      }
    },
    columnWidth: 50,
    selections: null,

    //callbacks
    onCellMouseDown: null,
    onCellMouseOver: null,
    onCellDblClick: null,
    onCellCornerMouseDown: null,
    onCellCornerDblClick: null,
    onDraw: null,

    //constants
    scrollbarWidth: 10,
    scrollbarHeight: 10
  };

  //reference to settings
  this.settings = {};
  for (var i in this.defaults) {
    if (this.defaults.hasOwnProperty(i)) {
      if (settings[i] !== void 0) {
        this.settings[i] = settings[i];
      }
      else if (this.defaults[i] === void 0) {
        throw new Error('A required setting "' + i + '" was not provided');
      }
      else {
        this.settings[i] = this.defaults[i];
      }
    }
  }

  this.rowHeightCache = [];
}

/**
 * generic methods
 */

WalkontableSettings.prototype.update = function (settings, value) {
  if (value === void 0) { //settings is object
    for (var i in settings) {
      if (settings.hasOwnProperty(i)) {
        this.settings[i] = settings[i];
      }
    }
  }
  else { //if value is defined then settings is the key
    this.settings[settings] = value;
  }
  return this.instance;
};

WalkontableSettings.prototype.getSetting = function (key, param1, param2, param3) {
  if (this[key]) {
    return this[key](param1, param2, param3);
  }
  else {
    return this._getSetting(key, param1, param2, param3);
  }
};

WalkontableSettings.prototype._getSetting = function (key, param1, param2, param3) {
  if (typeof this.settings[key] === 'function') {
    return this.settings[key](param1, param2, param3);
  }
  else if (param1 !== void 0 && Object.prototype.toString.call(this.settings[key]) === '[object Array]' && param1 !== void 0) {
    return this.settings[key][param1];
  }
  else {
    return this.settings[key];
  }
};

WalkontableSettings.prototype.has = function (key) {
  return !!this.settings[key]
};

/**
 * specific methods
 */

WalkontableSettings.prototype.rowHeight = function (row) {
  if (typeof this.rowHeightCache[row] !== 'undefined') {
    return this.rowHeightCache[row];
  }
  return 20;
};

WalkontableSettings.prototype.columnWidth = function (column) {
  return Math.min(200, this._getSetting('columnWidth', column));
};

WalkontableSettings.prototype.displayRows = function () {
  var estimated
    , calculated;

  if (this.settings['height']) {
    if (typeof this.settings['height'] !== 'number') {
      throw new Error('Walkontable height parameter must be a number (' + typeof this.settings['height'] + ' given)');
    }
    estimated = Math.ceil(this.settings['height'] / 20); //silly assumption but should be fine for now
    calculated = this.getSetting('totalRows') - this.getSetting('offsetRow');
    if (calculated < 0) {
      this.update('offsetRow', Math.max(0, this.getSetting('totalRows') - estimated));
      return estimated;
    }
    else {
      return Math.min(estimated, calculated);
    }
  }
  else {
    return this.getSetting('totalRows');
  }
};

WalkontableSettings.prototype.displayColumns = function () {
  var estimated
    , calculated;

  if (this.settings['width']) {
    if (typeof this.settings['width'] !== 'number') {
      throw new Error('Walkontable width parameter must be a number (' + typeof this.settings['width'] + ' given)');
    }
    estimated = Math.ceil(this.settings['width'] / 50); //silly assumption but should be fine for now
    calculated = this.getSetting('totalColumns') - this.getSetting('offsetColumn');
    if (calculated < 0) {
      this.update('offsetColumn', Math.max(0, this.getSetting('totalColumns') - estimated));
      return estimated;
    }
    else {
      return Math.min(estimated, calculated);
    }
  }
  else {
    return this.getSetting('totalColumns');
  }
};

WalkontableSettings.prototype.viewportRows = function () {
  if (this.instance.wtTable.visibilityEdgeRow !== null) {
    return this.instance.wtTable.visibilityEdgeRow - this.instance.wtTable.visibilityStartRow;
  }
  return this.getSetting('displayRows');
};

WalkontableSettings.prototype.viewportColumns = function () {
  if (this.instance.wtTable.visibilityEdgeColumn !== null) {
    return this.instance.wtTable.visibilityEdgeColumn - this.instance.wtTable.visibilityStartColumn;
  }
  return this.getSetting('displayColumns');
};
function WalkontableTable(instance) {
  //reference to instance
  this.instance = instance;
  this.TABLE = this.instance.getSetting('table');
  this.wtDom = this.instance.wtDom;
  this.wtDom.removeTextNodes(this.TABLE);

  this.hasEmptyCellProblem = ($.browser.msie && (parseInt($.browser.version, 10) <= 7));
  this.hasCellSpacingProblem = ($.browser.msie && (parseInt($.browser.version, 10) <= 7));

  if (this.hasCellSpacingProblem) { //IE7
    this.TABLE.cellSpacing = 0;
  }
  this.TABLE.setAttribute('tabindex', 10000); //http://www.barryvan.com.au/2009/01/onfocus-and-onblur-for-divs-in-fx/; 32767 is max tabindex for IE7,8

  this.visibilityStartRow = this.visibilityStartColumn = this.visibilityEdgeRow = this.visibilityEdgeColumn = null;

  //wtSpreader
  var parent = this.TABLE.parentNode;
  if (!parent || parent.nodeType !== 1 || !this.wtDom.hasClass(parent, 'wtHolder')) {
    var spreader = document.createElement('DIV');
    if (this.instance.hasSetting('width') && this.instance.hasSetting('height')) {
      spreader.style.position = 'absolute';
      spreader.style.top = '0';
      spreader.style.left = '0';
      spreader.style.width = '4000px';
      spreader.style.height = '4000px';
    }
    spreader.className = 'wtSpreader';
    if (parent) {
      parent.insertBefore(spreader, this.TABLE); //if TABLE is detached (e.g. in Jasmine test), it has no parentNode so we cannot attach holder to it
    }
    spreader.appendChild(this.TABLE);
  }
  this.spreader = this.TABLE.parentNode;

  //wtHider
  parent = this.spreader.parentNode;
  if (!parent || parent.nodeType !== 1 || !this.wtDom.hasClass(parent, 'wtHolder')) {
    var hider = document.createElement('DIV');
    hider.style.position = 'relative';
    hider.className = 'wtHider';
    if (parent) {
      parent.insertBefore(hider, this.spreader); //if TABLE is detached (e.g. in Jasmine test), it has no parentNode so we cannot attach holder to it
    }
    hider.appendChild(this.spreader);
  }
  this.hider = this.spreader.parentNode;

  //wtHolder
  parent = this.hider.parentNode;
  if (!parent || parent.nodeType !== 1 || !this.wtDom.hasClass(parent, 'wtHolder')) {
    var holder = document.createElement('DIV');
    holder.style.position = 'relative';
    holder.className = 'wtHolder';
    if (parent) {
      parent.insertBefore(holder, this.hider); //if TABLE is detached (e.g. in Jasmine test), it has no parentNode so we cannot attach holder to it
    }
    holder.appendChild(this.hider);
  }
  this.parent = this.hider.parentNode;

  //bootstrap from settings
  this.TBODY = this.TABLE.getElementsByTagName('TBODY')[0];
  if (!this.TBODY) {
    this.TBODY = document.createElement('TBODY');
    this.TABLE.appendChild(this.TBODY);
  }
  this.THEAD = this.TABLE.getElementsByTagName('THEAD')[0];
  if (!this.THEAD) {
    this.THEAD = document.createElement('THEAD');
    this.TABLE.insertBefore(this.THEAD, this.TBODY);
  }
  this.COLGROUP = this.TABLE.getElementsByTagName('COLGROUP')[0];
  if (!this.COLGROUP) {
    this.COLGROUP = document.createElement('COLGROUP');
    this.TABLE.insertBefore(this.COLGROUP, this.THEAD);
  }

  if (this.instance.hasSetting('columnHeaders')) {
    if (!this.THEAD.childNodes.length) {
      var TR = document.createElement('TR');
      this.THEAD.appendChild(TR);
    }
  }

  this.colgroupChildrenLength = this.COLGROUP.childNodes.length;
  this.theadChildrenLength = this.THEAD.firstChild ? this.THEAD.firstChild.childNodes.length : 0;
  this.tbodyChildrenLength = this.TBODY.childNodes.length;
}

WalkontableTable.prototype.refreshHiderDimensions = function () {
  var height = this.instance.getSetting('height');
  var width = this.instance.getSetting('width');

  if (height || width) {
    this.hider.style.overflow = 'hidden';
  }

  if (height) {
    if (this.instance.wtScroll.wtScrollbarH.visible) {
      this.hider.style.height = height - this.instance.getSetting('scrollbarHeight') + 'px';
    }
    else {
      this.hider.style.height = height + 'px';
    }
  }
  if (width) {
    if (this.instance.wtScroll.wtScrollbarV.visible) {
      this.hider.style.width = width - this.instance.getSetting('scrollbarWidth') + 'px';
    }
    else {
      this.hider.style.width = width + 'px';
    }
  }
};

WalkontableTable.prototype.refreshStretching = function () {
  var stretchH = this.instance.getSetting('stretchH')
    , totalColumns = this.instance.getSetting('totalColumns')
    , displayColumns = this.instance.getSetting('displayColumns')
    , displayTds = Math.min(displayColumns, totalColumns)
    , offsetColumn = this.instance.getSetting('offsetColumn')
    , frozenColumns = this.instance.getSetting('frozenColumns')
    , frozenColumnsCount = frozenColumns ? frozenColumns.length : 0;

  if (!this.instance.hasSetting('columnWidth')) {
    return;
  }

  if (stretchH === 'hybrid') {
    if (this.instance.wtScroll.wtScrollbarH.visible) {
      stretchH = 'last';
    }
    else {
      stretchH = 'none';
    }
  }

  var TD;
  if (this.instance.wtTable.TBODY.firstChild && this.instance.wtTable.TBODY.firstChild.firstChild) {
    TD = this.instance.wtTable.TBODY.firstChild.firstChild;
  }
  else if (this.instance.wtTable.THEAD.firstChild && this.instance.wtTable.THEAD.firstChild.firstChild) {
    TD = this.instance.wtTable.THEAD.firstChild.firstChild;
  }

  if (frozenColumnsCount) {
    TD = TD.nextSibling;
  }

  if (!TD) {
    return;
  }

  var cellOffset = this.instance.wtDom.offset(TD)
    , tableOffset = this.instance.wtTable.tableOffset
    , rowHeaderWidth = cellOffset.left - tableOffset.left
    , widths = []
    , widthSum = 0
    , c;
  for (c = 0; c < displayTds; c++) {
    widths.push(this.instance.getSetting('columnWidth', offsetColumn + c));
    widthSum += widths[c];
  }
  var domWidth = widthSum + rowHeaderWidth;

  if (stretchH === 'all' || stretchH === 'last') {
    var containerWidth = this.instance.getSetting('width');
    if (this.instance.wtScroll.wtScrollbarV.visible) {
      containerWidth -= this.instance.getSetting('scrollbarWidth');
    }

    var diff = containerWidth - domWidth;
    if (diff > 0) {
      if (stretchH === 'all') {
        var newWidth;
        var remainingDiff = diff;
        var ratio = diff / widthSum;

        for (c = 0; c < displayTds; c++) {
          if (widths[c]) {
            if (c === displayTds - 1) {
              newWidth = widths[c] + remainingDiff;
            }
            else {
              newWidth = widths[c] + Math.floor(ratio * widths[c]);
              remainingDiff -= Math.floor(ratio * widths[c]);
            }
          }
          widths[c] = newWidth;
        }
      }
      else {
        if (widths[widths.length - 1]) {
          widths[widths.length - 1] = widths[widths.length - 1] + diff;
        }
      }
    }
  }

  for (c = 0; c < displayTds; c++) {
    if (widths[c]) {
      this.COLGROUP.childNodes[c + frozenColumnsCount].style.width = widths[c] + 'px';
    }
    else {
      this.COLGROUP.childNodes[c + frozenColumnsCount].style.width = '';
    }
  }
};

WalkontableTable.prototype.adjustAvailableNodes = function () {
  var instance = this.instance
    , totalRows = instance.getSetting('totalRows')
    , totalColumns = instance.getSetting('totalColumns')
    , displayRows = instance.getSetting('displayRows')
    , displayColumns = instance.getSetting('displayColumns')
    , displayTds
    , frozenColumns = instance.getSetting('frozenColumns')
    , frozenColumnsCount = frozenColumns ? frozenColumns.length : 0
    , TR
    , c;

  displayRows = Math.min(displayRows, totalRows);
  displayTds = Math.min(displayColumns, totalColumns);

  //adjust COLGROUP
  while (this.colgroupChildrenLength < displayTds + frozenColumnsCount) {
    this.COLGROUP.appendChild(document.createElement('COL'));
    this.colgroupChildrenLength++;
  }
  while (this.colgroupChildrenLength > displayTds + frozenColumnsCount) {
    this.COLGROUP.removeChild(this.COLGROUP.lastChild);
    this.colgroupChildrenLength--;
  }

  //adjust THEAD
  if (this.instance.hasSetting('columnHeaders')) {
    while (this.theadChildrenLength < displayTds + frozenColumnsCount) {
      this.THEAD.firstChild.appendChild(document.createElement('TH'));
      this.theadChildrenLength++;
    }
    while (this.theadChildrenLength > displayTds + frozenColumnsCount) {
      this.THEAD.firstChild.removeChild(this.THEAD.firstChild.lastChild);
      this.theadChildrenLength--;
    }
  }

  //adjust TBODY
  while (this.tbodyChildrenLength < displayRows) {
    TR = document.createElement('TR');
    for (c = 0; c < frozenColumnsCount; c++) {
      TR.appendChild(document.createElement('TH'));
    }
    this.TBODY.appendChild(TR);
    this.tbodyChildrenLength++;
  }
  while (this.tbodyChildrenLength > displayRows) {
    this.TBODY.removeChild(this.TBODY.lastChild);
    this.tbodyChildrenLength--;
  }

  var TRs = this.TBODY.childNodes;
  var trChildrenLength;
  for (var r = 0, rlen = TRs.length; r < rlen; r++) {
    trChildrenLength = TRs[r].childNodes.length;
    while (trChildrenLength < displayTds + frozenColumnsCount) {
      var TD = document.createElement('TD');
      TD.setAttribute('tabindex', 10000); //http://www.barryvan.com.au/2009/01/onfocus-and-onblur-for-divs-in-fx/; 32767 is max tabindex for IE7,8
      TRs[r].appendChild(TD);
      trChildrenLength++;
    }
    while (trChildrenLength > displayTds + frozenColumnsCount) {
      TRs[r].removeChild(TRs[r].lastChild);
      trChildrenLength--;
    }
  }
};

WalkontableTable.prototype.draw = function (selectionsOnly) {
  if (!selectionsOnly) {
    this.tableOffset = this.wtDom.offset(this.TABLE);
    //this.TABLE.removeChild(this.TBODY); //possible future optimization - http://jsperf.com/table-scrolling/9
    this.adjustAvailableNodes();
    this._doDraw();
    //this.TABLE.appendChild(this.TBODY);
  }

  this.refreshPositions(selectionsOnly);

  this.instance.drawn = true;
  return this;
};

WalkontableTable.prototype._doDraw = function () {
  var r
    , c
    , offsetRow = this.instance.getSetting('offsetRow')
    , offsetColumn = this.instance.getSetting('offsetColumn')
    , totalRows = this.instance.getSetting('totalRows')
    , totalColumns = this.instance.getSetting('totalColumns')
    , displayRows = this.instance.getSetting('displayRows')
    , displayColumns = this.instance.getSetting('displayColumns')
    , displayTds
    , frozenColumns = this.instance.getSetting('frozenColumns')
    , frozenColumnsCount = frozenColumns ? frozenColumns.length : 0
    , TR
    , TH
    , TD
    , cellData;

  displayRows = Math.min(displayRows, totalRows);
  displayTds = Math.min(displayColumns, totalColumns);

  //draw COLGROUP
  for (c = 0; c < this.colgroupChildrenLength; c++) {
    if (c < frozenColumnsCount) {
      this.wtDom.addClass(this.COLGROUP.childNodes[c], 'rowHeader');
      if (typeof frozenColumns[c] === "function") {
        frozenColumns[c](null, this.COLGROUP.childNodes[c])
      }
    }
    else {
      this.wtDom.removeClass(this.COLGROUP.childNodes[c], 'rowHeader');
    }
  }

  this.refreshStretching(); //needed here or otherwise scrollbarH is not shown

  //draw THEAD
  if (frozenColumnsCount && this.instance.hasSetting('columnHeaders')) {
    for (c = 0; c < frozenColumnsCount; c++) {
      TH = this.THEAD.childNodes[0].childNodes[c];
      if (typeof frozenColumns[c] === "function") {
        frozenColumns[c](null, TH);
      }
      else {
        this.wtDom.empty(TH);
      }
      if (this.hasEmptyCellProblem && TH.innerHTML === '') { //IE7
        TH.innerHTML = '&nbsp;';
      }
    }
  }

  if (this.instance.hasSetting('columnHeaders')) {
    for (c = 0; c < displayTds; c++) {
      this.instance.getSetting('columnHeaders', offsetColumn + c, this.THEAD.childNodes[0].childNodes[frozenColumnsCount + c]);
    }
  }

  //draw TBODY
  this.visibilityEdgeRow = this.visibilityEdgeColumn = null;
  this.visibilityStartRow = offsetRow; //needed bacause otherwise the values get out of sync in async mode
  this.visibilityStartColumn = offsetColumn;
  for (r = 0; r < displayRows; r++) {
    TR = this.TBODY.childNodes[r];
    for (c = 0; c < frozenColumnsCount; c++) { //in future use nextSibling; http://jsperf.com/nextsibling-vs-indexed-childnodes
      TH = TR.childNodes[c];
      cellData = typeof frozenColumns[c] === "function" ? frozenColumns[c](offsetRow + r, TH) : frozenColumns[c];
      if (cellData !== void 0) {
        TH.innerHTML = cellData;
      }
      /*
       we can assume that frozenColumns[c] function took care of inserting content into TH
       else {
       TH.innerHTML = '';
       }*/
    }

    var visibilityFullRow = null;
    var visibilityFullColumn = null;
    this.wtDom.tdResetCache();

    for (c = 0; c < displayTds; c++) { //in future use nextSibling; http://jsperf.com/nextsibling-vs-indexed-childnodes
      if (this.visibilityEdgeColumn !== null && offsetColumn + c > this.visibilityEdgeColumn) {
        break;
      }
      else {
        TD = TR.childNodes[c + frozenColumnsCount];
        TD.className = '';
        TD.removeAttribute('style');
        this.instance.getSetting('cellRenderer', offsetRow + r, offsetColumn + c, TD);
        if (this.hasEmptyCellProblem && TD.innerHTML === '') { //IE7
          TD.innerHTML = '&nbsp;';
        }

        var visibility = this.isCellVisible(offsetRow + r, offsetColumn + c, TD);
        if (this.visibilityEdgeColumn === null && visibility & FLAG_VISIBLE_HORIZONTAL) {
          visibilityFullColumn = offsetColumn + c;
        }
        else if (this.visibilityEdgeColumn === null && visibility & FLAG_PARTIALLY_VISIBLE_HORIZONTAL) {
          this.visibilityEdgeColumn = offsetColumn + c;
        }

        if (this.visibilityEdgeRow === null && visibility & FLAG_VISIBLE_VERTICAL) {
          visibilityFullRow = offsetRow + r;
        }
        else if (this.visibilityEdgeRow === null && visibility & FLAG_PARTIALLY_VISIBLE_VERTICAL) {
          this.visibilityEdgeRow = offsetRow + r;
        }
      }
    }
    /*if (this.visibilityEdgeRow !== null && offsetRow + r > this.visibilityEdgeRow) {
     break;
     }*/
  }

  if (this.visibilityEdgeRow === null) {
    this.visibilityEdgeRow = visibilityFullRow + 1;
  }
  if (this.visibilityEdgeColumn === null) {
    this.visibilityEdgeColumn = visibilityFullColumn + 1;
  }
};

WalkontableTable.prototype.refreshPositions = function (selectionsOnly) {
  this.instance.wtScroll.refreshScrollbars();
  this.refreshHiderDimensions();
  this.refreshStretching();
  this.refreshSelections(selectionsOnly);
};

WalkontableTable.prototype.refreshSelections = function (selectionsOnly) {
  var r;
  if (this.instance.selections) {
    for (r in this.instance.selections) {
      if (this.instance.selections.hasOwnProperty(r)) {
        this.instance.selections[r].draw(selectionsOnly);
      }
    }
  }
};

WalkontableTable.prototype.recalcViewportCells = function () {
  if (this.instance.wtScroll.wtScrollbarV.visible && this.visibilityEdgeColumnRemainder <= this.instance.getSetting('scrollbarWidth')) {
    this.visibilityEdgeColumn--;
    this.visibilityEdgeColumnRemainder = Infinity;
  }
  if (this.instance.wtScroll.wtScrollbarH.visible && this.visibilityEdgeRowRemainder <= this.instance.getSetting('scrollbarHeight')) {
    this.visibilityEdgeRow--;
    this.visibilityEdgeRowRemainder = Infinity;
  }
};

var FLAG_VISIBLE_HORIZONTAL = 0x1; // 000001
var FLAG_VISIBLE_VERTICAL = 0x2; // 000010
var FLAG_PARTIALLY_VISIBLE_HORIZONTAL = 0x4; // 000100
var FLAG_PARTIALLY_VISIBLE_VERTICAL = 0x8; // 001000
var FLAG_NOT_VISIBLE_HORIZONTAL = 0x16; // 010000
var FLAG_NOT_VISIBLE_VERTICAL = 0x32; // 100000

WalkontableTable.prototype.isCellVisible = function (r, c, TD) {
  var out = 0
    , scrollV = this.instance.getSetting('scrollV')
    , scrollH = this.instance.getSetting('scrollH')
    , cellOffset = this.wtDom.offset(TD)
    , tableOffset = this.tableOffset
    , innerOffsetTop = cellOffset.top - tableOffset.top
    , innerOffsetLeft = cellOffset.left - tableOffset.left
    , $td = $(TD)
    , width = $td.outerWidth()
    , height = $td.outerHeight()
    , tableWidth = this.instance.hasSetting('width') ? this.instance.getSetting('width') : Infinity
    , tableHeight = this.instance.hasSetting('height') ? this.instance.getSetting('height') : Infinity;

  this.instance.wtSettings.rowHeightCache[r] = height;

  /**
   * Legend:
   * 0 - not visible vertically
   * 1 - not visible horizontally
   * 2 - partially visible vertically
   * 3 - partially visible horizontally
   * 4 - visible
   */

  if (innerOffsetTop > tableHeight) {
    out |= FLAG_NOT_VISIBLE_VERTICAL;
  }
  else if (innerOffsetTop + height > tableHeight) {
    this.visibilityEdgeRowRemainder = tableHeight - innerOffsetTop;
    out |= FLAG_PARTIALLY_VISIBLE_VERTICAL;
  }
  else {
    out |= FLAG_VISIBLE_VERTICAL;
  }

  if (innerOffsetLeft > tableWidth) {
    out |= FLAG_NOT_VISIBLE_HORIZONTAL;
  }
  else if (innerOffsetLeft + width > tableWidth) {
    this.visibilityEdgeColumnRemainder = tableWidth - innerOffsetLeft;
    out |= FLAG_PARTIALLY_VISIBLE_HORIZONTAL;
  }
  else {
    out |= FLAG_VISIBLE_HORIZONTAL;
  }

  return out;
};

/**
 * getCell
 * @param {Array} coords
 * @return {Object} HTMLElement on success or {Number} one of the exit codes on error:
 *  -1 row before viewport
 *  -2 row after viewport
 *  -3 column before viewport
 *  -4 column after viewport
 *
 */
WalkontableTable.prototype.getCell = function (coords) {
  var offsetRow = this.instance.getSetting('offsetRow');
  if (coords[0] < offsetRow) {
    return -1; //row before viewport
  }
  else if (coords[0] > offsetRow + this.instance.getSetting('displayRows') - 1) {
    return -2; //row after viewport
  }
  else {
    var offsetColumn = this.instance.getSetting('offsetColumn');
    if (coords[1] < offsetColumn) {
      return -3; //column before viewport
    }
    else if (coords[1] > offsetColumn + this.instance.getSetting('displayColumns') - 1) {
      return -4; //column after viewport
    }
    else {
      var frozenColumns = this.instance.getSetting('frozenColumns')
        , frozenColumnsCount = (frozenColumns ? frozenColumns.length : 0)
        , tr = this.TBODY.childNodes[coords[0] - offsetRow];

      if (typeof tr === "undefined") { //this block is only needed in async mode
        this.adjustAvailableNodes();
        tr = this.TBODY.childNodes[coords[0] - offsetRow];
      }

      return tr.childNodes[coords[1] - offsetColumn + frozenColumnsCount];
    }
  }
};

WalkontableTable.prototype.getCoords = function (TD) {
  var frozenColumns = this.instance.getSetting('frozenColumns')
    , frozenColumnsCount = frozenColumns ? frozenColumns.length : 0;
  return [
    this.wtDom.prevSiblings(TD.parentNode).length + this.instance.getSetting('offsetRow'),
    TD.cellIndex + this.instance.getSetting('offsetColumn') - frozenColumnsCount
  ];
};
function WalkontableWheel(instance) {
  var that = this;

  //reference to instance
  this.instance = instance;
  $(this.instance.wtTable.TABLE).on('mousewheel', function (event, delta, deltaX, deltaY) {
    clearTimeout(that.instance.wheelTimeout);
    that.instance.wheelTimeout = setTimeout(function () { //timeout is needed because with fast-wheel scrolling mousewheel event comes dozen times per second
      if (deltaY) {
        //ceil is needed because jquery-mousewheel reports fractional mousewheel deltas on touchpad scroll
        //see http://stackoverflow.com/questions/5527601/normalizing-mousewheel-speed-across-browsers
        that.instance.scrollVertical(-Math.ceil(deltaY)).draw();
      }
      else if (deltaX) {
        that.instance.scrollHorizontal(Math.ceil(deltaX)).draw();
      }
    }, 0);
    event.preventDefault();
  });
}
/**
 * Dragdealer JS v0.9.5 - patched by Walkontable at line 66
 * http://code.ovidiu.ch/dragdealer-js
 *
 * Copyright (c) 2010, Ovidiu Chereches
 * MIT License
 * http://legal.ovidiu.ch/licenses/MIT
 */

/* Cursor */

var Cursor =
{
	x: 0, y: 0,
	init: function()
	{
		this.setEvent('mouse');
		this.setEvent('touch');
	},
	setEvent: function(type)
	{
		var moveHandler = document['on' + type + 'move'] || function(){};
		document['on' + type + 'move'] = function(e)
		{
			moveHandler(e);
			Cursor.refresh(e);
		}
	},
	refresh: function(e)
	{
		if(!e)
		{
			e = window.event;
		}
		if(e.type == 'mousemove')
		{
			this.set(e);
		}
		else if(e.touches)
		{
			this.set(e.touches[0]);
		}
	},
	set: function(e)
	{
		if(e.pageX || e.pageY)
		{
			this.x = e.pageX;
			this.y = e.pageY;
		}
		else if(e.clientX || e.clientY)
		{
			this.x = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
			this.y = e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
		}
	}
};
Cursor.init();

/* Position */

var Position =
{
	get: function(obj)
	{
		var curtop = 0, curleft = 0; //Walkontable patch. Original (var curleft = curtop = 0;) created curtop in global scope
		if(obj.offsetParent)
		{
			do
			{
				curleft += obj.offsetLeft;
				curtop += obj.offsetTop;
			}
			while((obj = obj.offsetParent));
		}
		return [curleft, curtop];
	}
};

/* Dragdealer */

var Dragdealer = function(wrapper, options)
{
	if(typeof(wrapper) == 'string')
	{
		wrapper = document.getElementById(wrapper);
	}
	if(!wrapper)
	{
		return;
	}
	var handle = wrapper.getElementsByTagName('div')[0];
	if(!handle || handle.className.search(/(^|\s)handle(\s|$)/) == -1)
	{
		return;
	}
	this.init(wrapper, handle, options || {});
	this.setup();
};
Dragdealer.prototype =
{
	init: function(wrapper, handle, options)
	{
		this.wrapper = wrapper;
		this.handle = handle;
		this.options = options;

		this.disabled = this.getOption('disabled', false);
		this.horizontal = this.getOption('horizontal', true);
		this.vertical = this.getOption('vertical', false);
		this.slide = this.getOption('slide', true);
		this.steps = this.getOption('steps', 0);
		this.snap = this.getOption('snap', false);
		this.loose = this.getOption('loose', false);
		this.speed = this.getOption('speed', 10) / 100;
		this.xPrecision = this.getOption('xPrecision', 0);
		this.yPrecision = this.getOption('yPrecision', 0);

		this.callback = options.callback || null;
		this.animationCallback = options.animationCallback || null;

		this.bounds = {
			left: options.left || 0, right: -(options.right || 0),
			top: options.top || 0, bottom: -(options.bottom || 0),
			x0: 0, x1: 0, xRange: 0,
			y0: 0, y1: 0, yRange: 0
		};
		this.value = {
			prev: [-1, -1],
			current: [options.x || 0, options.y || 0],
			target: [options.x || 0, options.y || 0]
		};
		this.offset = {
			wrapper: [0, 0],
			mouse: [0, 0],
			prev: [-999999, -999999],
			current: [0, 0],
			target: [0, 0]
		};
		this.change = [0, 0];

		this.activity = false;
		this.dragging = false;
		this.tapping = false;
	},
	getOption: function(name, defaultValue)
	{
		return this.options[name] !== undefined ? this.options[name] : defaultValue;
	},
	setup: function()
	{
		this.setWrapperOffset();
		this.setBoundsPadding();
		this.setBounds();
		this.setSteps();

		this.addListeners();
	},
	setWrapperOffset: function()
	{
		this.offset.wrapper = Position.get(this.wrapper);
	},
	setBoundsPadding: function()
	{
		if(!this.bounds.left && !this.bounds.right)
		{
			this.bounds.left = Position.get(this.handle)[0] - this.offset.wrapper[0];
			this.bounds.right = -this.bounds.left;
		}
		if(!this.bounds.top && !this.bounds.bottom)
		{
			this.bounds.top = Position.get(this.handle)[1] - this.offset.wrapper[1];
			this.bounds.bottom = -this.bounds.top;
		}
	},
	setBounds: function()
	{
		this.bounds.x0 = this.bounds.left;
		this.bounds.x1 = this.wrapper.offsetWidth + this.bounds.right;
		this.bounds.xRange = (this.bounds.x1 - this.bounds.x0) - this.handle.offsetWidth;

		this.bounds.y0 = this.bounds.top;
		this.bounds.y1 = this.wrapper.offsetHeight + this.bounds.bottom;
		this.bounds.yRange = (this.bounds.y1 - this.bounds.y0) - this.handle.offsetHeight;

		this.bounds.xStep = 1 / (this.xPrecision || Math.max(this.wrapper.offsetWidth, this.handle.offsetWidth));
		this.bounds.yStep = 1 / (this.yPrecision || Math.max(this.wrapper.offsetHeight, this.handle.offsetHeight));
	},
	setSteps: function()
	{
		if(this.steps > 1)
		{
			this.stepRatios = [];
			for(var i = 0; i <= this.steps - 1; i++)
			{
				this.stepRatios[i] = i / (this.steps - 1);
			}
		}
	},
	addListeners: function()
	{
		var self = this;

		this.wrapper.onselectstart = function()
		{
			return false;
		}
		this.handle.onmousedown = this.handle.ontouchstart = function(e)
		{
			self.handleDownHandler(e);
		};
		this.wrapper.onmousedown = this.wrapper.ontouchstart = function(e)
		{
			self.wrapperDownHandler(e);
		};
		var mouseUpHandler = document.onmouseup || function(){};
		document.onmouseup = function(e)
		{
			mouseUpHandler(e);
			self.documentUpHandler(e);
		};
		var touchEndHandler = document.ontouchend || function(){};
		document.ontouchend = function(e)
		{
			touchEndHandler(e);
			self.documentUpHandler(e);
		};
		var resizeHandler = window.onresize || function(){};
		window.onresize = function(e)
		{
			resizeHandler(e);
			self.documentResizeHandler(e);
		};
		this.wrapper.onmousemove = function(e)
		{
			self.activity = true;
		}
		this.wrapper.onclick = function(e)
		{
			return !self.activity;
		}

		this.interval = setInterval(function(){ self.animate() }, 25);
		self.animate(false, true);
	},
	handleDownHandler: function(e)
	{
		this.activity = false;
		Cursor.refresh(e);

		this.preventDefaults(e, true);
		this.startDrag();
		this.cancelEvent(e);
	},
	wrapperDownHandler: function(e)
	{
		Cursor.refresh(e);

		this.preventDefaults(e, true);
		this.startTap();
	},
	documentUpHandler: function(e)
	{
		this.stopDrag();
		this.stopTap();
		//this.cancelEvent(e);
	},
	documentResizeHandler: function(e)
	{
		this.setWrapperOffset();
		this.setBounds();

		this.update();
	},
	enable: function()
	{
		this.disabled = false;
		this.handle.className = this.handle.className.replace(/\s?disabled/g, '');
	},
	disable: function()
	{
		this.disabled = true;
		this.handle.className += ' disabled';
	},
	setStep: function(x, y, snap)
	{
		this.setValue(
			this.steps && x > 1 ? (x - 1) / (this.steps - 1) : 0,
			this.steps && y > 1 ? (y - 1) / (this.steps - 1) : 0,
			snap
		);
	},
	setValue: function(x, y, snap)
	{
		this.setTargetValue([x, y || 0]);
		if(snap)
		{
			this.groupCopy(this.value.current, this.value.target);
		}
	},
	startTap: function(target)
	{
		if(this.disabled)
		{
			return;
		}
		this.tapping = true;

		if(target === undefined)
		{
			target = [
				Cursor.x - this.offset.wrapper[0] - (this.handle.offsetWidth / 2),
				Cursor.y - this.offset.wrapper[1] - (this.handle.offsetHeight / 2)
			];
		}
		this.setTargetOffset(target);
	},
	stopTap: function()
	{
		if(this.disabled || !this.tapping)
		{
			return;
		}
		this.tapping = false;

		this.setTargetValue(this.value.current);
		this.result();
	},
	startDrag: function()
	{
		if(this.disabled)
		{
			return;
		}
		this.offset.mouse = [
			Cursor.x - Position.get(this.handle)[0],
			Cursor.y - Position.get(this.handle)[1]
		];

		this.dragging = true;
	},
	stopDrag: function()
	{
		if(this.disabled || !this.dragging)
		{
			return;
		}
		this.dragging = false;

		var target = this.groupClone(this.value.current);
		if(this.slide)
		{
			var ratioChange = this.change;
			target[0] += ratioChange[0] * 4;
			target[1] += ratioChange[1] * 4;
		}
		this.setTargetValue(target);
		this.result();
	},
	feedback: function()
	{
		var value = this.value.current;
		if(this.snap && this.steps > 1)
		{
			value = this.getClosestSteps(value);
		}
		if(!this.groupCompare(value, this.value.prev))
		{
			if(typeof(this.animationCallback) == 'function')
			{
				this.animationCallback(value[0], value[1]);
			}
			this.groupCopy(this.value.prev, value);
		}
	},
	result: function()
	{
		if(typeof(this.callback) == 'function')
		{
			this.callback(this.value.target[0], this.value.target[1]);
		}
	},
	animate: function(direct, first)
	{
		if(direct && !this.dragging)
		{
			return;
		}
		if(this.dragging)
		{
			var prevTarget = this.groupClone(this.value.target);

			var offset = [
				Cursor.x - this.offset.wrapper[0] - this.offset.mouse[0],
				Cursor.y - this.offset.wrapper[1] - this.offset.mouse[1]
			];
			this.setTargetOffset(offset, this.loose);

			this.change = [
				this.value.target[0] - prevTarget[0],
				this.value.target[1] - prevTarget[1]
			];
		}
		if(this.dragging || first)
		{
			this.groupCopy(this.value.current, this.value.target);
		}
		if(this.dragging || this.glide() || first)
		{
			this.update();
			this.feedback();
		}
	},
	glide: function()
	{
		var diff = [
			this.value.target[0] - this.value.current[0],
			this.value.target[1] - this.value.current[1]
		];
		if(!diff[0] && !diff[1])
		{
			return false;
		}
		if(Math.abs(diff[0]) > this.bounds.xStep || Math.abs(diff[1]) > this.bounds.yStep)
		{
			this.value.current[0] += diff[0] * this.speed;
			this.value.current[1] += diff[1] * this.speed;
		}
		else
		{
			this.groupCopy(this.value.current, this.value.target);
		}
		return true;
	},
	update: function()
	{
		if(!this.snap)
		{
			this.offset.current = this.getOffsetsByRatios(this.value.current);
		}
		else
		{
			this.offset.current = this.getOffsetsByRatios(
				this.getClosestSteps(this.value.current)
			);
		}
		this.show();
	},
	show: function()
	{
		if(!this.groupCompare(this.offset.current, this.offset.prev))
		{
			if(this.horizontal)
			{
				this.handle.style.left = String(this.offset.current[0]) + 'px';
			}
			if(this.vertical)
			{
				this.handle.style.top = String(this.offset.current[1]) + 'px';
			}
			this.groupCopy(this.offset.prev, this.offset.current);
		}
	},
	setTargetValue: function(value, loose)
	{
		var target = loose ? this.getLooseValue(value) : this.getProperValue(value);

		this.groupCopy(this.value.target, target);
		this.offset.target = this.getOffsetsByRatios(target);
	},
	setTargetOffset: function(offset, loose)
	{
		var value = this.getRatiosByOffsets(offset);
		var target = loose ? this.getLooseValue(value) : this.getProperValue(value);

		this.groupCopy(this.value.target, target);
		this.offset.target = this.getOffsetsByRatios(target);
	},
	getLooseValue: function(value)
	{
		var proper = this.getProperValue(value);
		return [
			proper[0] + ((value[0] - proper[0]) / 4),
			proper[1] + ((value[1] - proper[1]) / 4)
		];
	},
	getProperValue: function(value)
	{
		var proper = this.groupClone(value);

		proper[0] = Math.max(proper[0], 0);
		proper[1] = Math.max(proper[1], 0);
		proper[0] = Math.min(proper[0], 1);
		proper[1] = Math.min(proper[1], 1);

		if((!this.dragging && !this.tapping) || this.snap)
		{
			if(this.steps > 1)
			{
				proper = this.getClosestSteps(proper);
			}
		}
		return proper;
	},
	getRatiosByOffsets: function(group)
	{
		return [
			this.getRatioByOffset(group[0], this.bounds.xRange, this.bounds.x0),
			this.getRatioByOffset(group[1], this.bounds.yRange, this.bounds.y0)
		];
	},
	getRatioByOffset: function(offset, range, padding)
	{
		return range ? (offset - padding) / range : 0;
	},
	getOffsetsByRatios: function(group)
	{
		return [
			this.getOffsetByRatio(group[0], this.bounds.xRange, this.bounds.x0),
			this.getOffsetByRatio(group[1], this.bounds.yRange, this.bounds.y0)
		];
	},
	getOffsetByRatio: function(ratio, range, padding)
	{
		return Math.round(ratio * range) + padding;
	},
	getClosestSteps: function(group)
	{
		return [
			this.getClosestStep(group[0]),
			this.getClosestStep(group[1])
		];
	},
	getClosestStep: function(value)
	{
		var k = 0;
		var min = 1;
		for(var i = 0; i <= this.steps - 1; i++)
		{
			if(Math.abs(this.stepRatios[i] - value) < min)
			{
				min = Math.abs(this.stepRatios[i] - value);
				k = i;
			}
		}
		return this.stepRatios[k];
	},
	groupCompare: function(a, b)
	{
		return a[0] == b[0] && a[1] == b[1];
	},
	groupCopy: function(a, b)
	{
		a[0] = b[0];
		a[1] = b[1];
	},
	groupClone: function(a)
	{
		return [a[0], a[1]];
	},
	preventDefaults: function(e, selection)
	{
		if(!e)
		{
			e = window.event;
		}
		if(e.preventDefault)
		{
			e.preventDefault();
		}
		e.returnValue = false;

		if(selection && document.selection)
		{
			document.selection.empty();
		}
	},
	cancelEvent: function(e)
	{
		if(!e)
		{
			e = window.event;
		}
		if(e.stopPropagation)
		{
			e.stopPropagation();
		}
		e.cancelBubble = true;
	}
};

/*! Copyright (c) 2011 Brandon Aaron (http://brandonaaron.net)
 * Licensed under the MIT License (LICENSE.txt).
 *
 * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
 * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
 * Thanks to: Seamus Leahy for adding deltaX and deltaY
 *
 * Version: 3.0.6
 *
 * Requires: 1.2.2+
 */

(function($) {

var types = ['DOMMouseScroll', 'mousewheel'];

if ($.event.fixHooks) {
    for ( var i=types.length; i; ) {
        $.event.fixHooks[ types[--i] ] = $.event.mouseHooks;
    }
}

$.event.special.mousewheel = {
    setup: function() {
        if ( this.addEventListener ) {
            for ( var i=types.length; i; ) {
                this.addEventListener( types[--i], handler, false );
            }
        } else {
            this.onmousewheel = handler;
        }
    },

    teardown: function() {
        if ( this.removeEventListener ) {
            for ( var i=types.length; i; ) {
                this.removeEventListener( types[--i], handler, false );
            }
        } else {
            this.onmousewheel = null;
        }
    }
};

$.fn.extend({
    mousewheel: function(fn) {
        return fn ? this.bind("mousewheel", fn) : this.trigger("mousewheel");
    },

    unmousewheel: function(fn) {
        return this.unbind("mousewheel", fn);
    }
});


function handler(event) {
    var orgEvent = event || window.event, args = [].slice.call( arguments, 1 ), delta = 0, returnValue = true, deltaX = 0, deltaY = 0;
    event = $.event.fix(orgEvent);
    event.type = "mousewheel";

    // Old school scrollwheel delta
    if ( orgEvent.wheelDelta ) { delta = orgEvent.wheelDelta/120; }
    if ( orgEvent.detail     ) { delta = -orgEvent.detail/3; }

    // New school multidimensional scroll (touchpads) deltas
    deltaY = delta;

    // Gecko
    if ( orgEvent.axis !== undefined && orgEvent.axis === orgEvent.HORIZONTAL_AXIS ) {
        deltaY = 0;
        deltaX = -1*delta;
    }

    // Webkit
    if ( orgEvent.wheelDeltaY !== undefined ) { deltaY = orgEvent.wheelDeltaY/120; }
    if ( orgEvent.wheelDeltaX !== undefined ) { deltaX = -1*orgEvent.wheelDeltaX/120; }

    // Add event and delta to the front of the arguments
    args.unshift(event, delta, deltaX, deltaY);

    return ($.event.dispatch || $.event.handle).apply(this, args);
}

})(jQuery);

/**
 * CopyPaste.js
 * Creates a textarea that stays hidden on the page and gets focused when user presses CTRL while not having a form input focused
 * In future we may implement a better driver when better APIs are available
 * @constructor
 */
function CopyPaste(listenerElement) {
  var that = this;
  listenerElement = listenerElement || document.body;

  this.elDiv = document.createElement('DIV');
  this.elDiv.style.position = 'fixed';
  this.elDiv.style.top = 0;
  this.elDiv.style.left = 0;
  listenerElement.appendChild(this.elDiv);

  this.elTextarea = document.createElement('TEXTAREA');
  this.elTextarea.className = 'copyPaste';
  this.elTextarea.style.width = '1px';
  this.elTextarea.style.height = '1px';
  this.elDiv.appendChild(this.elTextarea);

  if (typeof this.elTextarea.style.opacity !== 'undefined') {
    this.elTextarea.style.opacity = 0;
  }
  else {
    /*@cc_on @if (@_jscript)
     if(typeof this.elTextarea.style.filter === 'string') {
     this.elTextarea.style.filter = 'alpha(opacity=0)';
     }
     @end @*/
  }

  this._bindEvent(listenerElement, 'keydown', function (event) {
    var isCtrlDown = false;
    if (event.metaKey) { //mac
      isCtrlDown = true;
    }
    else if (event.ctrlKey && navigator.userAgent.indexOf('Mac') === -1) { //pc
      isCtrlDown = true;
    }

    if (isCtrlDown) {
      that.selectNodeText(that.elTextarea);
      setTimeout(function () {
        that.selectNodeText(that.elTextarea);
      }, 0);
    }

    /* 67 = c
     * 86 = v
     * 88 = x
     */
    if (isCtrlDown && (event.keyCode === 67 || event.keyCode === 86 || event.keyCode === 88)) {
      // that.selectNodeText(that.elTextarea);

      if (event.keyCode === 88) { //works in all browsers, incl. Opera < 12.12
        setTimeout(function () {
          that.triggerCut(event);
        }, 0);
      }
      else if (event.keyCode === 86) {
        setTimeout(function () {
          that.triggerPaste(event);
        }, 0);
      }
    }
  });
}

//http://jsperf.com/textara-selection
//http://stackoverflow.com/questions/1502385/how-can-i-make-this-code-work-in-ie
CopyPaste.prototype.selectNodeText = function (el) {
  this.elTextarea.select();
};

CopyPaste.prototype.copyable = function (str) {
  if (typeof str !== 'string' && str.toString === void 0) {
    throw new Error('copyable requires string parameter');
  }
  this.elTextarea.value = str;
};

CopyPaste.prototype.onCopy = function (fn) {
  this.copyCallback = fn;
};

CopyPaste.prototype.onCut = function (fn) {
  this.cutCallback = fn;
};

CopyPaste.prototype.onPaste = function (fn) {
  this.pasteCallback = fn;
};

CopyPaste.prototype.triggerCut = function (event) {
  var that = this;
  if (that.cutCallback) {
    setTimeout(function () {
      that.cutCallback(event);
    }, 0);
  }
};

CopyPaste.prototype.triggerPaste = function (event, str) {
  var that = this;
  if (that.pasteCallback) {
    setTimeout(function () {
      that.pasteCallback((str || that.elTextarea.value).replace(/\n$/, ''), event); //remove trailing newline
    }, 0);
  }
};

//http://net.tutsplus.com/tutorials/javascript-ajax/javascript-from-null-cross-browser-event-binding/
//http://stackoverflow.com/questions/4643249/cross-browser-event-object-normalization
CopyPaste.prototype._bindEvent = (function () {
  if (document.addEventListener) {
    return function (elem, type, cb) {
      elem.addEventListener(type, cb, false);
    };
  }
  else {
    return function (elem, type, cb) {
      elem.attachEvent('on' + type, function () {
        var e = window['event'];
        e.target = e.srcElement;
        e.relatedTarget = e.relatedTarget || e.type == 'mouseover' ? e.fromElement : e.toElement;
        if (e.target.nodeType === 3) e.target = e.target.parentNode; //Safari bug
        return cb.call(elem, e)
      });
    };
  }
})();
})(jQuery, window, Handsontable);