/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/
(function (root, $, _, Backbone) {

  "use strict";

/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

var window = root;

var Backgrid = root.Backgrid = {
  VERSION: "0.2.0",
  Extension: {}
};

// Copyright 2009, 2010 Kristopher Michael Kowal
// https://github.com/kriskowal/es5-shim
// ES5 15.5.4.20
// http://es5.github.com/#x15.5.4.20
var ws = "\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003" +
  "\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028" +
  "\u2029\uFEFF";
if (!String.prototype.trim || ws.trim()) {
  // http://blog.stevenlevithan.com/archives/faster-trim-javascript
  // http://perfectionkills.com/whitespace-deviations/
  ws = "[" + ws + "]";
  var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
  trimEndRegexp = new RegExp(ws + ws + "*$");
  String.prototype.trim = function trim() {
    if (this === undefined || this === null) {
      throw new TypeError("can't convert " + this + " to object");
    }
    return String(this)
      .replace(trimBeginRegexp, "")
      .replace(trimEndRegexp, "");
  };
}

function capitalize(s) {
  return String.fromCharCode(s.charCodeAt(0) - 32) + s.slice(1);
}

function lpad(str, length, padstr) {
  var paddingLen = length - (str + '').length;
  paddingLen =  paddingLen < 0 ? 0 : paddingLen;
  var padding = '';
  for (var i = 0; i < paddingLen; i++) {
    padding = padding + padstr;
  }
  return padding + str;
}

function requireOptions(options, requireOptionKeys) {
  for (var i = 0; i < requireOptionKeys.length; i++) {
    var key = requireOptionKeys[i];
    if (_.isUndefined(options[key])) {
      throw new TypeError("'" + key  + "' is required");
    }
  }
}

function resolveNameToClass(name, suffix) {
  if (_.isString(name)) {
    var key = _.map(name.split('-'), function (e) { return capitalize(e); }).join('') + suffix;
    var klass = Backgrid[key] || Backgrid.Extension[key];
    if (_.isUndefined(klass)) {
      throw new ReferenceError("Class '" + key + "' not found");
    }
    return klass;
  }

  return name;
}
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   Just a convenient class for interested parties to subclass.

   The default Cell classes don't require the formatter to be a subclass of
   Formatter as long as the fromRaw(rawData) and toRaw(formattedData) methods
   are defined.

   @abstract
   @class Backgrid.CellFormatter
   @constructor
*/
var CellFormatter = Backgrid.CellFormatter = function () {};
_.extend(CellFormatter.prototype, {

  /**
     Takes a raw value from a model and returns an optionally formatted string
     for display. The default implementation simply returns the supplied value
     as is without any type conversion.

     @member Backgrid.CellFormatter
     @param {*} rawData
     @return {*}
  */
  fromRaw: function (rawData) {
    return rawData;
  },

  /**
     Takes a formatted string, usually from user input, and returns a
     appropriately typed value for persistence in the model.

     If the user input is invalid or unable to be converted to a raw value
     suitable for persistence in the model, toRaw must return `undefined`.

     @member Backgrid.CellFormatter
     @param {string} formattedData
     @return {*|undefined}
  */
  toRaw: function (formattedData) {
    return formattedData;
  }

});

/**
   A floating point number formatter. Doesn't understand notation at the moment.

   @class Backgrid.NumberFormatter
   @extends Backgrid.CellFormatter
   @constructor
   @throws {RangeError} If decimals < 0 or > 20.
*/
var NumberFormatter = Backgrid.NumberFormatter = function (options) {
  options = options ? _.clone(options) : {};
  _.extend(this, this.defaults, options);

  if (this.decimals < 0 || this.decimals > 20) {
    throw new RangeError("decimals must be between 0 and 20");
  }
};
NumberFormatter.prototype = new CellFormatter();
_.extend(NumberFormatter.prototype, {

  /**
     @member Backgrid.NumberFormatter
     @cfg {Object} options

     @cfg {number} [options.decimals=2] Number of decimals to display. Must be an integer.

     @cfg {string} [options.decimalSeparator='.'] The separator to use when
     displaying decimals.

     @cfg {string} [options.orderSeparator=','] The separator to use to
     separator thousands. May be an empty string.
   */
  defaults: {
    decimals: 2,
    decimalSeparator: '.',
    orderSeparator: ','
  },

  HUMANIZED_NUM_RE: /(\d)(?=(?:\d{3})+$)/g,

  /**
     Takes a floating point number and convert it to a formatted string where
     every thousand is separated by `orderSeparator`, with a `decimal` number of
     decimals separated by `decimalSeparator`. The number returned is rounded
     the usual way.

     @member Backgrid.NumberFormatter
     @param {number} number
     @return {string}
  */
  fromRaw: function (number) {
    if (_.isNull(number) || _.isUndefined(number)) return '';

    number = number.toFixed(~~this.decimals);

    var parts = number.split('.');
    var integerPart = parts[0];
    var decimalPart = parts[1] ? (this.decimalSeparator || '.') + parts[1] : '';

    return integerPart.replace(this.HUMANIZED_NUM_RE, '$1' + this.orderSeparator) + decimalPart;
  },

  /**
     Takes a string, possibly formatted with `orderSeparator` and/or
     `decimalSeparator`, and convert it back to a number.

     @member Backgrid.NumberFormatter
     @param {string} formattedData
     @return {number|undefined} Undefined if the string cannot be converted to
     a number.
  */
  toRaw: function (formattedData) {
    var rawData = '';

    var thousands = formattedData.trim().split(this.orderSeparator);
    for (var i = 0; i < thousands.length; i++) {
      rawData += thousands[i];
    }

    var decimalParts = rawData.split(this.decimalSeparator);
    rawData = '';
    for (var i = 0; i < decimalParts.length; i++) {
      rawData = rawData + decimalParts[i] + '.';
    }

    if (rawData[rawData.length - 1] === '.') {
      rawData = rawData.slice(0, rawData.length - 1);
    }

    var result = (rawData * 1).toFixed(~~this.decimals) * 1;
    if (_.isNumber(result) && !_.isNaN(result)) return result;
  }

});

/**
   Formatter to converts between various datetime string formats.

   This class only understands ISO-8601 formatted datetime strings. See
   Backgrid.Extension.MomentFormatter if you need a much more flexible datetime
   formatter.

   @class Backgrid.DatetimeFormatter
   @extends Backgrid.CellFormatter
   @constructor
   @throws {Error} If both `includeDate` and `includeTime` are false.
*/
var DatetimeFormatter = Backgrid.DatetimeFormatter = function (options) {
  options = options ? _.clone(options) : {};
  _.extend(this, this.defaults, options);

  if (!this.includeDate && !this.includeTime) {
    throw new Error("Either includeDate or includeTime must be true");
  }
};
DatetimeFormatter.prototype = new CellFormatter();
_.extend(DatetimeFormatter.prototype, {

  /**
     @member Backgrid.DatetimeFormatter

     @cfg {Object} options

     @cfg {boolean} [options.includeDate=true] Whether the values include the
     date part.

     @cfg {boolean} [options.includeTime=true] Whether the values include the
     time part.

     @cfg {boolean} [options.includeMilli=false] If `includeTime` is true,
     whether to include the millisecond part, if it exists.
   */
  defaults: {
    includeDate: true,
    includeTime: true,
    includeMilli: false
  },

  DATE_RE: /^([+\-]?\d{4})-(\d{2})-(\d{2})$/,
  TIME_RE: /^(\d{2}):(\d{2}):(\d{2})(\.(\d{3}))?$/,
  ISO_SPLITTER_RE: /T|Z| +/,

  _convert: function (data, validate) {
    data = data.trim();
    var parts = data.split(this.ISO_SPLITTER_RE) || [];

    var date = this.DATE_RE.test(parts[0]) ? parts[0] : '';
    var time = date && parts[1] ? parts[1] : this.TIME_RE.test(parts[0]) ? parts[0] : '';

    var YYYYMMDD = this.DATE_RE.exec(date) || [];
    var HHmmssSSS = this.TIME_RE.exec(time) || [];

    if (validate) {
      if (this.includeDate && _.isUndefined(YYYYMMDD[0])) return;
      if (this.includeTime && _.isUndefined(HHmmssSSS[0])) return;
      if (!this.includeDate && date) return;
      if (!this.includeTime && time) return;
    }

    var jsDate = new Date(Date.UTC(YYYYMMDD[1] * 1 || 0,
                                   YYYYMMDD[2] * 1 - 1 || 0,
                                   YYYYMMDD[3] * 1 || 0,
                                   HHmmssSSS[1] * 1 || null,
                                   HHmmssSSS[2] * 1 || null,
                                   HHmmssSSS[3] * 1 || null,
                                   HHmmssSSS[5] * 1 || null));

    var result = '';

    if (this.includeDate) {
      result = lpad(jsDate.getUTCFullYear(), 4, 0) + '-' + lpad(jsDate.getUTCMonth() + 1, 2, 0) + '-' + lpad(jsDate.getUTCDate(), 2, 0);
    }

    if (this.includeTime) {
      result = result + (this.includeDate ? 'T' : '') + lpad(jsDate.getUTCHours(), 2, 0) + ':' + lpad(jsDate.getUTCMinutes(), 2, 0) + ':' + lpad(jsDate.getUTCSeconds(), 2, 0);

      if (this.includeMilli) {
        result = result + '.' + lpad(jsDate.getUTCMilliseconds(), 3, 0);
      }
    }

    if (this.includeDate && this.includeTime) {
      result += "Z";
    }

    return result;
  },

  /**
     Converts an ISO-8601 formatted datetime string to a datetime string, date
     string or a time string. The timezone is ignored if supplied.

     @member Backgrid.DatetimeFormatter
     @param {string} rawData
     @return {string|null|undefined} ISO-8601 string in UTC. Null and undefined
     values are returned as is.
  */
  fromRaw: function (rawData) {
    if (_.isNull(rawData) || _.isUndefined(rawData)) return '';
    return this._convert(rawData);
  },

  /**
     Converts an ISO-8601 formatted datetime string to a datetime string, date
     string or a time string. The timezone is ignored if supplied. This method
     parses the input values exactly the same way as
     Backgrid.Extension.MomentFormatter#fromRaw(), in addition to doing some
     sanity checks.

     @member Backgrid.DatetimeFormatter
     @param {string} formattedData
     @return {string|undefined} ISO-8601 string in UTC. Undefined if a date is
     found when `includeDate` is false, or a time is found when `includeTime` is
     false, or if `includeDate` is true and a date is not found, or if
     `includeTime` is true and a time is not found.
  */
  toRaw: function (formattedData) {
    return this._convert(formattedData, true);
  }

});

/**
   Formatter to convert any value to string.

   @class Backgrid.StringFormatter
   @extends Backgrid.CellFormatter
   @constructor
 */
var StringFormatter = Backgrid.StringFormatter = function () {};
StringFormatter.prototype = new CellFormatter();
_.extend(StringFormatter.prototype, {
  /**
     Converts any value to a string using Ecmascript's implicit type
     conversion. If the given value is `null` or `undefined`, an empty string is
     returned instead.

     @member Backgrid.StringFormatter
     @param {*} rawValue
     @return {string}
   */
  fromRaw: function (rawValue) {
    if (_.isUndefined(rawValue) || _.isNull(rawValue)) return '';
    return rawValue + '';
  }
});

/**
   Simple email validation formatter.

   @class Backgrid.EmailFormatter
   @extends Backgrid.CellFormatter
   @constructor
 */
var EmailFormatter = Backgrid.EmailFormatter = function () {};
EmailFormatter.prototype = new CellFormatter();
_.extend(EmailFormatter.prototype, {
  /**
     Return the input if it is a string that contains an '@' character and if
     the strings before and after '@' are non-empty. If the input does not
     validate, `undefined` is returned.

     @member Backgrid.EmailFormatter
     @param {*} formattedData
     @return {string|undefined}
   */
  toRaw: function (formattedData) {
    var parts = formattedData.trim().split("@");
    if (parts.length === 2 && _.all(parts)) {
      return formattedData;
    }
  }
});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   Generic cell editor base class. Only defines an initializer for a number of
   required parameters.

   @abstract
   @class Backgrid.CellEditor
   @extends Backbone.View
*/
var CellEditor = Backgrid.CellEditor = Backbone.View.extend({

  /**
     Initializer.

     @param {Object} options
     @param {*} options.parent
     @param {Backgrid.CellFormatter} options.formatter
     @param {Backgrid.Column} options.column
     @param {Backbone.Model} options.model

     @throws {TypeError} If `formatter` is not a formatter instance, or when
     `model` or `column` are undefined.
  */
  initialize: function (options) {
    requireOptions(options, ["formatter", "column", "model"]);
    this.parent = options.parent;
    this.formatter = options.formatter;
    this.column = options.column;
    if (!(this.column instanceof Column)) {
      this.column = new Column(this.column);
    }
    if (this.parent && _.isFunction(this.parent.on)) {
      this.listenTo(this.parent, "backgrid:editing", this.postRender);
    }

    this.listenTo(this, "backgrid:done", this.remove);
  },

  /**
     Post-rendering setup and initialization. Focuses the cell editor's `el` in
     this default implementation. **Should** be called by Cell classes after
     calling Backgrid.CellEditor#render.
  */
  postRender: function () {
    this.$el.focus();
    return this;
  }

});

/**
   InputCellEditor the cell editor type used by most core cell types. This cell
   editor renders a text input box as its editor. The input will render a
   placeholder if the value is empty on supported browsers.

   @class Backgrid.InputCellEditor
   @extends Backgrid.CellEditor
*/
var InputCellEditor = Backgrid.InputCellEditor = CellEditor.extend({

  /** @property */
  tagName: "input",

  /** @property */
  attributes: {
    type: "text"
  },

  /** @property */
  events: {
    "blur": "saveOrCancel",
    "keydown": "saveOrCancel"
  },

  /**
     Initializer. Removes this `el` from the DOM when a `done` event is
     triggered.

     @param {Object} options
     @param {Backgrid.CellFormatter} options.formatter
     @param {Backgrid.Column} options.column
     @param {Backbone.Model} options.model
     @param {string} [options.placeholder]
  */
  initialize: function (options) {
    CellEditor.prototype.initialize.apply(this, arguments);

    if (options.placeholder) {
      this.$el.attr("placeholder", options.placeholder);
    }
  },

  /**
     Renders a text input with the cell value formatted for display, if it
     exists.
  */
  render: function () {
    this.$el.val(this.formatter.fromRaw(this.model.get(this.column.get("name"))));
    return this;
  },

  /**
     If the key pressed is `enter` or `tab`, converts the value in the editor to
     a raw value for the model using the formatter.

     If the key pressed is `esc` the changes are undone.

     If the editor's value was changed and goes out of focus (`blur`), the event
     is intercepted, cancelled so the cell remains in focus pending for further
     action.

     Triggers a Backbone `backgrid:done` event when successful. `backgrid:error`
     if the value cannot be converted. Classes listening to the `error` event,
     usually the Cell classes, should respond appropriately, usually by
     rendering some kind of error feedback.

     @param {Event} e
  */
  saveOrCancel: function (e) {

    var formatter = this.formatter;
    var model = this.model;
    var column = this.column;

    // enter or tab or blur
    if (e.keyCode === 13 || e.keyCode === 9 || e.type === "blur") {
      e.preventDefault();
      var newValue = formatter.toRaw(this.$el.val());
      if (_.isUndefined(newValue) ||
          !model.set(column.get("name"), newValue, {validate: true})) {
        this.trigger("backgrid:error", this);

        if (e.type === "blur") {
          var self = this;
          var timeout = window.setTimeout(function () {
            self.$el.focus();
            window.clearTimeout(timeout);
          }, 1);
        }
      }
      else {
        this.trigger("backgrid:done", this);
      }
    }
    // esc
    else if (e.keyCode === 27) {
      // undo
      e.stopPropagation();
      this.trigger("backgrid:done", this);
    }
  },

  postRender: function () {
    // move the cursor to the end on firefox if text is right aligned
    if (this.$el.css("text-align") === "right") {
      var val = this.$el.val();
      this.$el.focus().val(null).val(val);
    }
    else {
      this.$el.focus();
    }
    return this;
  }

});

/**
   The super-class for all Cell types. By default, this class renders a plain
   table cell with the model value converted to a string using the
   formatter. The table cell is clickable, upon which the cell will go into
   editor mode, which is rendered by a Backgrid.InputCellEditor instance by
   default. Upon any formatting errors, this class will add a `error` CSS class
   to the table cell.

   @abstract
   @class Backgrid.Cell
   @extends Backbone.View
*/
var Cell = Backgrid.Cell = Backbone.View.extend({

  /** @property */
  tagName: "td",

  /**
     @property {Backgrid.CellFormatter|Object|string} [formatter=new CellFormatter()]
  */
  formatter: new CellFormatter(),

  /**
     @property {Backgrid.CellEditor} [editor=Backgrid.InputCellEditor] The
     default editor for all cell instances of this class. This value must be a
     class, it will be automatically instantiated upon entering edit mode.

     See Backgrid.CellEditor
  */
  editor: InputCellEditor,

  /** @property */
  events: {
    "click": "enterEditMode"
  },

  /**
     Initializer.

     @param {Object} options
     @param {Backbone.Model} options.model
     @param {Backgrid.Column} options.column

     @throws {ReferenceError} If formatter is a string but a formatter class of
     said name cannot be found in the Backgrid module.
  */
  initialize: function (options) {
    requireOptions(options, ["model", "column"]);
    this.column = options.column;
    if (!(this.column instanceof Column)) {
      this.column = new Column(this.column);
    }
    this.formatter = resolveNameToClass(this.formatter, "Formatter");
    this.editor = resolveNameToClass(this.editor, "CellEditor");
    this.listenTo(this.model, "change:" + this.column.get("name"), function () {
      if (!this.$el.hasClass("editor")) this.render();
    });
  },

  /**
     Render a text string in a table cell. The text is converted from the
     model's raw value for this cell's column.
  */
  render: function () {
    this.$el.empty();
    this.$el.text(this.formatter.fromRaw(this.model.get(this.column.get("name"))));
    this.delegateEvents();
    return this;
  },

  /**
     If this column is editable, a new CellEditor instance is instantiated with
     its required parameters and listens on the editor's `backgrid:done` and
     `backgrid:error` events. When the editor is `done`, edit mode is
     exited. When the editor triggers an `backgrid:error` event, it means the
     editor is unable to convert the current user input to an apprpriate value
     for the model's column. An `editor` CSS class is added to the cell upon
     entering edit mode.

     This method triggers a Backbone `backgrid:edit` event when the cell is
     entering edit mode and an editor instance has been constructed, but before
     it is rendered and inserted into the DOM. The cell and the constructed cell
     editor instance are sent as event parameters when this event is triggered.

     When this cell has finished switching to edit mode, a Backbone
     `backgrid:editing` event is triggered. The cell and the constructed cell
     instance are also sent as parameters in the event.
  */
  enterEditMode: function () {
    if (this.column.get("editable")) {

      this.currentEditor = new this.editor({
        parent: this,
        column: this.column,
        model: this.model,
        formatter: this.formatter
      });

      this.trigger("backgrid:edit", this, this.currentEditor);

      this.listenTo(this.currentEditor, "backgrid:done", this.exitEditMode);
      this.listenTo(this.currentEditor, "backgrid:error", this.renderError);

      this.$el.empty();
      this.undelegateEvents();
      this.$el.append(this.currentEditor.$el);
      this.currentEditor.render();
      this.$el.addClass("editor");

      this.trigger("backgrid:editing", this, this.currentEditor);
    }
  },

  /**
     Put an `error` CSS class on the table cell.
  */
  renderError: function () {
    this.$el.addClass("error");
  },

  /**
     Removes the editor and re-render in display mode.
  */
  exitEditMode: function () {
    this.$el.removeClass("error");
    this.stopListening(this.currentEditor);
    delete this.currentEditor;
    this.$el.removeClass("editor");
    this.render();
    this.delegateEvents();
  },

  /**
     Clean up this cell.

     @chainable
   */
  remove: function () {
    if (this.currentEditor) {
      this.currentEditor.remove.apply(this, arguments);
      delete this.currentEditor;
    }
    return Backbone.View.prototype.remove.apply(this, arguments);
  }

});

/**
   StringCell displays HTML escaped strings and accepts anything typed in.

   @class Backgrid.StringCell
   @extends Backgrid.Cell
*/
var StringCell = Backgrid.StringCell = Cell.extend({

  /** @property */
  className: "string-cell",

  formatter: new StringFormatter()

});

/**
   UriCell renders an HTML `<a>` anchor for the value and accepts URIs as user
   input values. No type conversion or URL validation is done by the formatter
   of this cell. Users who need URL validation are encourage to subclass UriCell
   to take advantage of the parsing capabilities of the HTMLAnchorElement
   available on HTML5-capable browsers or using a third-party library like
   [URI.js](https://github.com/medialize/URI.js).

   @class Backgrid.UriCell
   @extends Backgrid.Cell
*/
var UriCell = Backgrid.UriCell = Cell.extend({

  /** @property */
  className: "uri-cell",

  render: function () {
    this.$el.empty();
    var formattedValue = this.formatter.fromRaw(this.model.get(this.column.get("name")));
    this.$el.append($("<a>", {
      href: formattedValue,
      title: formattedValue,
      target: "_blank"
    }).text(formattedValue));
    this.delegateEvents();
    return this;
  }

});

/**
   Like Backgrid.UriCell, EmailCell renders an HTML `<a>` anchor for the
   value. The `href` in the anchor is prefixed with `mailto:`. EmailCell will
   complain if the user enters a string that doesn't contain the `@` sign.

   @class Backgrid.EmailCell
   @extends Backgrid.StringCell
*/
var EmailCell = Backgrid.EmailCell = StringCell.extend({

  /** @property */
  className: "email-cell",

  formatter: new EmailFormatter(),

  render: function () {
    this.$el.empty();
    var formattedValue = this.formatter.fromRaw(this.model.get(this.column.get("name")));
    this.$el.append($("<a>", {
      href: "mailto:" + formattedValue,
      title: formattedValue
    }).text(formattedValue));
    this.delegateEvents();
    return this;
  }

});

/**
   NumberCell is a generic cell that renders all numbers. Numbers are formatted
   using a Backgrid.NumberFormatter.

   @class Backgrid.NumberCell
   @extends Backgrid.Cell
*/
var NumberCell = Backgrid.NumberCell = Cell.extend({

  /** @property */
  className: "number-cell",

  /**
     @property {number} [decimals=2] Must be an integer.
  */
  decimals: NumberFormatter.prototype.defaults.decimals,

  /** @property {string} [decimalSeparator='.'] */
  decimalSeparator: NumberFormatter.prototype.defaults.decimalSeparator,

  /** @property {string} [orderSeparator=','] */
  orderSeparator: NumberFormatter.prototype.defaults.orderSeparator,

  /** @property {Backgrid.CellFormatter} [formatter=Backgrid.NumberFormatter] */
  formatter: NumberFormatter,

  /**
     Initializes this cell and the number formatter.

     @param {Object} options
     @param {Backbone.Model} options.model
     @param {Backgrid.Column} options.column
  */
  initialize: function (options) {
    Cell.prototype.initialize.apply(this, arguments);
    this.formatter = new this.formatter({
      decimals: this.decimals,
      decimalSeparator: this.decimalSeparator,
      orderSeparator: this.orderSeparator
    });
  }

});

/**
   An IntegerCell is just a Backgrid.NumberCell with 0 decimals. If a floating
   point number is supplied, the number is simply rounded the usual way when
   displayed.

   @class Backgrid.IntegerCell
   @extends Backgrid.NumberCell
*/
var IntegerCell = Backgrid.IntegerCell = NumberCell.extend({

  /** @property */
  className: "integer-cell",

  /**
     @property {number} decimals Must be an integer.
  */
  decimals: 0
});

/**
   DatetimeCell is a basic cell that accepts datetime string values in RFC-2822
   or W3C's subset of ISO-8601 and displays them in ISO-8601 format. For a much
   more sophisticated date time cell with better datetime formatting, take a
   look at the Backgrid.Extension.MomentCell extension.

   @class Backgrid.DatetimeCell
   @extends Backgrid.Cell

   See:

   - Backgrid.Extension.MomentCell
   - Backgrid.DatetimeFormatter
*/
var DatetimeCell = Backgrid.DatetimeCell = Cell.extend({

  /** @property */
  className: "datetime-cell",

  /**
     @property {boolean} [includeDate=true]
  */
  includeDate: DatetimeFormatter.prototype.defaults.includeDate,

  /**
     @property {boolean} [includeTime=true]
  */
  includeTime: DatetimeFormatter.prototype.defaults.includeTime,

  /**
     @property {boolean} [includeMilli=false]
  */
  includeMilli: DatetimeFormatter.prototype.defaults.includeMilli,

  /** @property {Backgrid.CellFormatter} [formatter=Backgrid.DatetimeFormatter] */
  formatter: DatetimeFormatter,

  /**
     Initializes this cell and the datetime formatter.

     @param {Object} options
     @param {Backbone.Model} options.model
     @param {Backgrid.Column} options.column
  */
  initialize: function (options) {
    Cell.prototype.initialize.apply(this, arguments);
    this.formatter = new this.formatter({
      includeDate: this.includeDate,
      includeTime: this.includeTime,
      includeMilli: this.includeMilli
    });

    var placeholder = this.includeDate ? "YYYY-MM-DD" : "";
    placeholder += (this.includeDate && this.includeTime) ? "T" : "";
    placeholder += this.includeTime ? "HH:mm:ss" : "";
    placeholder += (this.includeTime && this.includeMilli) ? ".SSS" : "";

    this.editor = this.editor.extend({
      attributes: _.extend({}, this.editor.prototype.attributes, this.editor.attributes, {
        placeholder: placeholder
      })
    });
  }

});

/**
   DateCell is a Backgrid.DatetimeCell without the time part.

   @class Backgrid.DateCell
   @extends Backgrid.DatetimeCell
*/
var DateCell = Backgrid.DateCell = DatetimeCell.extend({

  /** @property */
  className: "date-cell",

  /** @property */
  includeTime: false

});

/**
   TimeCell is a Backgrid.DatetimeCell without the date part.

   @class Backgrid.TimeCell
   @extends Backgrid.DatetimeCell
*/
var TimeCell = Backgrid.TimeCell = DatetimeCell.extend({

  /** @property */
  className: "time-cell",

  /** @property */
  includeDate: false

});

/**
   BooleanCell is a different kind of cell in that there's no difference between
   display mode and edit mode and this cell type always renders a checkbox for
   selection.

   @class Backgrid.BooleanCell
   @extends Backgrid.Cell
*/
var BooleanCell = Backgrid.BooleanCell = Cell.extend({

  /** @property */
  className: "boolean-cell",

  /**
     BooleanCell simple uses a default HTML checkbox template instead of a
     CellEditor instance.

     @property {function(Object, ?Object=): string} editor The Underscore.js template to
     render the editor.
  */
  editor: _.template("<input type='checkbox'<%= checked ? checked='checked' : '' %> />'"),

  /**
     Since the editor is not an instance of a CellEditor subclass, more things
     need to be done in BooleanCell class to listen to editor mode events.
  */
  events: {
    "click": "enterEditMode",
    "blur input[type=checkbox]": "exitEditMode",
    "change input[type=checkbox]": "save"
  },

  /**
     Renders a checkbox and check it if the model value of this column is true,
     uncheck otherwise.
  */
  render: function () {
    this.$el.empty();
    this.currentEditor = $(this.editor({
      checked: this.formatter.fromRaw(this.model.get(this.column.get("name")))
    }));
    this.$el.append(this.currentEditor);
    this.delegateEvents();
    return this;
  },

  /**
     Simple focuses the checkbox and add an `editor` CSS class to the cell.
  */
  enterEditMode: function (e) {
    this.$el.addClass("editor");
    this.currentEditor.focus();
  },

  /**
     Removed the `editor` CSS class from the cell.
  */
  exitEditMode: function (e) {
    this.$el.removeClass("editor");
  },

  /**
     Set true to the model attribute if the checkbox is checked, false
     otherwise.
  */
  save: function (e) {
    var val = this.formatter.toRaw(this.currentEditor.prop("checked"));
    this.model.set(this.column.get("name"), val);
  }

});

/**
   SelectCellEditor renders an HTML `<select>` fragment as the editor.

   @class Backgrid.SelectCellEditor
   @extends Backgrid.CellEditor
*/
var SelectCellEditor = Backgrid.SelectCellEditor = CellEditor.extend({

  /** @property */
  tagName: "select",

  /** @property */
  events: {
    "change": "save",
    "blur": "close"
  },

  /** @property {function(Object, ?Object=): string} template */
  template: _.template('<option value="<%- value %>" <%= selected ? \'selected="selected"\' : "" %>><%- text %></option>'),

  setOptionValues: function (optionValues) {
    this.optionValues = optionValues;
  },

  _renderOptions: function (nvps, currentValue) {
    var options = '';
    for (var i = 0; i < nvps.length; i++) {
      options = options + this.template({
        text: nvps[i][0],
        value: nvps[i][1],
        selected: currentValue == nvps[i][1]
      });
    }
    return options;
  },

  /**
     Renders the options if `optionValues` is a list of name-value pairs. The
     options are contained inside option groups if `optionValues` is a list of
     object hashes. The name is rendered at the option text and the value is the
     option value. If `optionValues` is a function, it is called without a
     parameter.
  */
  render: function () {
    this.$el.empty();

    var optionValues = _.result(this, "optionValues");
    var currentValue = this.model.get(this.column.get("name"));

    if (!_.isArray(optionValues)) throw TypeError("optionValues must be an array");

    var optionValue = null;
    var optionText = null;
    var optionValue = null;
    var optgroupName = null;
    var optgroup = null;
    for (var i = 0; i < optionValues.length; i++) {
      var optionValue = optionValues[i];

      if (_.isArray(optionValue)) {
        optionText  = optionValue[0];
        optionValue = optionValue[1];

        this.$el.append(this.template({
          text: optionText,
          value: optionValue,
          selected: optionValue == currentValue
        }));
      }
      else if (_.isObject(optionValue)) {
        optgroupName = optionValue.name;
        optgroup = $("<optgroup></optgroup>", { label: optgroupName });
        optgroup.append(this._renderOptions(optionValue.values, currentValue));
        this.$el.append(optgroup);
      }
      else {
        throw TypeError("optionValues elements must be a name-value pair or an object hash of { name: 'optgroup label', value: [option name-value pairs] }");
      }
    }

    this.delegateEvents();

    return this;
  },

  /**
     Saves the value of the selected option to the model attribute. Triggers a
     `backgrid:done` Backbone event.
  */
  save: function () {
    this.model.set(this.column.get("name"), this.formatter.toRaw(this.$el.val()));
    this.trigger("backgrid:done", this);
  },

  /**
     Triggers a `backgrid:done` event so the parent can close this editor.
   */
  close: function () {
    this.trigger("backgrid:done", this);
  }

});

/**
   SelectCell is also a different kind of cell in that upon going into edit mode
   the cell renders a list of options for to pick from, as opposed to an input
   box.

   SelectCell cannot be referenced by its string name when used in a column
   definition because requires an `optionValues` class attribute to be
   defined. `optionValues` can either be a list of name-value pairs, to be
   rendered as options, or a list of object hashes which consist of a key *name*
   which is the option group name, and a key *values* which is a list of
   name-value pairs to be rendered as options under that option group.

   In addition, `optionValues` can also be a parameter-less function that
   returns one of the above. If the options are static, it is recommended the
   returned values to be memoized. _.memoize() is a good function to help with
   that.

   Lastly, since this class uses the default CellFormatter, during display mode,
   the raw model value is compared with the `optionValues` values using
   Ecmascript's implicit type conversion rules. When exiting edit mode, no type
   conversion is performed when saving into the model. This behavior is not
   always desirable when the value type is anything other than string. To
   control type conversion on the client-side, you should subclass SelectCell to
   provide a custom formatter or provide the formatter to your column
   definition.

   @class Backgrid.SelectCell
   @extends Backgrid.Cell
*/
var SelectCell = Backgrid.SelectCell = Cell.extend({

  /** @property */
  className: "select-cell",

  /** @property */
  editor: SelectCellEditor,

  /**
     @property {Array.<Array>|Array.<{name: string, values: Array.<Array>}>} optionValues
  */
  optionValues: undefined,

  /**
     Initializer.

     @param {Object} options
     @param {Backbone.Model} options.model
     @param {Backgrid.Column} options.column

     @throws {TypeError} If `optionsValues` is undefined.
  */
  initialize: function (options) {
    Cell.prototype.initialize.apply(this, arguments);
    requireOptions(this, ["optionValues"]);
    this.optionValues = _.result(this, "optionValues");
    this.listenTo(this, "backgrid:edit", this.setOptionValues);
  },

  setOptionValues: function (cell, editor) {
    editor.setOptionValues(this.optionValues);
  },

  /**
     Renders the label using the raw value as key to look up from `optionValues`.

     @throws {TypeError} If `optionValues` is malformed.
  */
  render: function () {
    this.$el.empty();

    var optionValues = this.optionValues;
    var rawData = this.formatter.fromRaw(this.model.get(this.column.get("name")));

    try {
      if (!_.isArray(optionValues) || _.isEmpty(optionValues)) throw new TypeError;

      for (var i = 0; i < optionValues.length; i++) {
        var optionValue = optionValues[i];

        if (_.isArray(optionValue)) {
          var optionText  = optionValue[0];
          var optionValue = optionValue[1];

          if (optionValue == rawData) {
            this.$el.append(optionText);
            break;
          }
        }
        else if (_.isObject(optionValue)) {
          var optionGroupValues = optionValue.values;
          for (var j = 0; j < optionGroupValues.length; j++) {
            var optionGroupValue = optionGroupValues[j];
            if (optionGroupValue[1] == rawData) {
              this.$el.append(optionGroupValue[0]);
              break;
            }
          }
        }
        else {
          throw new TypeError;
        }
      }
    }
    catch (ex) {
      if (ex instanceof TypeError) {
        throw TypeError("'optionValues' must be of type {Array.<Array>|Array.<{name: string, values: Array.<Array>}>}");
      }
      throw ex;
    }

    this.delegateEvents();

    return this;
  }

});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   A Column is a placeholder for column metadata.

   You usually don't need to create an instance of this class yourself as a
   collection of column instances will be created for you from a list of column
   attributes in the Backgrid.js view class constructors.

   @class Backgrid.Column
   @extends Backbone.Model
 */
var Column = Backgrid.Column = Backbone.Model.extend({

  defaults: {
    name: undefined,
    label: undefined,
    sortable: true,
    editable: true,
    renderable: true,
    formatter: undefined,
    cell: undefined,
    headerCell: undefined
  },

  /**
     Initializes this Column instance.

     @param {Object} attrs Column attributes.
     @param {string} attrs.name The name of the model attribute.
     @param {string|Backgrid.Cell} attrs.cell The cell type.
     If this is a string, the capitalized form will be used to look up a
     cell class in Backbone, i.e.: string => StringCell. If a Cell subclass
     is supplied, it is initialized with a hash of parameters. If a Cell
     instance is supplied, it is used directly.
     @param {string|Backgrid.HeaderCell} [attrs.headerCell] The header cell type.
     @param {string} [attrs.label] The label to show in the header.
     @param {boolean} [attrs.sortable=true]
     @param {boolean} [attrs.editable=true]
     @param {boolean} [attrs.renderable=true]
     @param {Backgrid.CellFormatter|Object|string} [attrs.formatter] The
     formatter to use to convert between raw model values and user input.

     @throws {TypeError} If attrs.cell or attrs.options are not supplied.
     @throws {ReferenceError} If attrs.cell is a string but a cell class of
     said name cannot be found in the Backgrid module.

     See:

     - Backgrid.Cell
     - Backgrid.CellFormatter
   */
  initialize: function (attrs) {
    requireOptions(attrs, ["cell", "name"]);

    if (!this.has("label")) {
      this.set({ label: this.get("name") }, { silent: true });
    }

    var headerCell = resolveNameToClass(this.get("headerCell"), "HeaderCell");
    var cell = resolveNameToClass(this.get("cell"), "Cell");
    this.set({ cell: cell, headerCell: headerCell }, { silent: true });
  }

});

/**
   A Backbone collection of Column instances.

   @class Backgrid.Columns
   @extends Backbone.Collection
 */
var Columns = Backgrid.Columns = Backbone.Collection.extend({

  /**
     @property {Backgrid.Column} model
   */
  model: Column
});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   Row is a simple container view that takes a model instance and a list of
   column metadata describing how each of the model's attribute is to be
   rendered, and apply the appropriate cell to each attribute.

   @class Backgrid.Row
   @extends Backbone.View
 */
var Row = Backgrid.Row = Backbone.View.extend({

  /** @property */
  tagName: "tr",

  initOptionRequires: ["columns", "model"],

  /**
     Initializes a row view instance.

     @param {Object} options
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns Column metadata.
     @param {Backbone.Model} options.model The model instance to render.

     @throws {TypeError} If options.columns or options.model is undefined.
   */
  initialize: function (options) {

    requireOptions(options, this.initOptionRequires);

    var columns = this.columns = options.columns;
    if (!(columns instanceof Backbone.Collection)) {
      columns = this.columns = new Columns(columns);
    }

    var cells = this.cells = [];
    for (var i = 0; i < columns.length; i++) {
      cells.push(this.makeCell(columns.at(i), options));
    }

    this.listenTo(columns, "change:renderable", function (column, renderable) {
      for (var i = 0; i < cells.length; i++) {
        var cell = cells[i];
        if (cell.column.get("name") == column.get("name")) {
          if (renderable) cell.$el.show(); else cell.$el.hide();
        }
      }
    });

    this.listenTo(columns, "add", function (column, columns) {
      var i = columns.indexOf(column);
      var cell = this.makeCell(column, options);
      cells.splice(i, 0, cell);

      if (!cell.column.get("renderable")) cell.$el.hide();

      var $el = this.$el;
      if (i === 0) {
        $el.prepend(cell.render().$el);
      }
      else if (i === columns.length - 1) {
        $el.append(cell.render().$el);
      }
      else {
        $el.children().eq(i).before(cell.render().$el);
      }
    });

    this.listenTo(columns, "remove", function (column, columns, opts) {
      cells[opts.index].remove();
      cells.splice(opts.index, 1);
    });
  },

  /**
     Factory method for making a cell. Used by #initialize internally. Override
     this to provide an appropriate cell instance for a custom Row subclass.

     @protected

     @param {Backgrid.Column} column
     @param {Object} options The options passed to #initialize.

     @return {Backgrid.Cell}
   */
  makeCell: function (column) {
    return new (column.get("cell"))({
      column: column,
      model: this.model
    });
  },

  /**
     Renders a row of cells for this row's model.
   */
  render: function () {
    this.$el.empty();

    var fragment = document.createDocumentFragment();

    for (var i = 0; i < this.cells.length; i++) {
      var cell = this.cells[i];
      fragment.appendChild(cell.render().el);
      if (!cell.column.get("renderable")) cell.$el.hide();
    }

    this.el.appendChild(fragment);

    this.delegateEvents();

    return this;
  },

  /**
     Clean up this row and its cells.

     @chainable
   */
  remove: function () {
    for (var i = 0; i < this.cells.length; i++) {
      var cell = this.cells[i];
      cell.remove.apply(cell, arguments);
    }
    return Backbone.View.prototype.remove.apply(this, arguments);
  }

});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   HeaderCell is a special cell class that renders a column header cell. If the
   column is sortable, a sorter is also rendered and will trigger a table
   refresh after sorting.

   @class Backgrid.HeaderCell
   @extends Backbone.View
 */
var HeaderCell = Backgrid.HeaderCell = Backbone.View.extend({

  /** @property */
  tagName: "th",

  /** @property */
  events: {
    "click a": "onClick"
  },

  /**
    @property {null|"ascending"|"descending"} _direction The current sorting
    direction of this column.
  */
  _direction: null,

  /**
     Initializer.

     @param {Object} options
     @param {Backgrid.Column|Object} options.column

     @throws {TypeError} If options.column or options.collection is undefined.
   */
  initialize: function (options) {
    requireOptions(options, ["column", "collection"]);
    this.column = options.column;
    if (!(this.column instanceof Column)) {
      this.column = new Column(this.column);
    }
    this.listenTo(Backbone, "backgrid:sort", this._resetCellDirection);
  },

  /**
     Gets or sets the direction of this cell. If called directly without
     parameters, returns the current direction of this cell, otherwise sets
     it. If a `null` is given, sets this cell back to the default order.

     @param {null|"ascending"|"descending"} dir
     @return {null|string} The current direction or the changed direction.
   */
  direction: function (dir) {
    if (arguments.length) {
      if (this._direction) this.$el.removeClass(this._direction);
      if (dir) this.$el.addClass(dir);
      this._direction = dir;
    }

    return this._direction;
  },

  /**
     Event handler for the Backbone `backgrid:sort` event. Resets this cell's
     direction to default if sorting is being done on another column.

     @private
   */
  _resetCellDirection: function (sortByColName, direction, comparator, collection) {
    if (collection == this.collection) {
      if (sortByColName !== this.column.get("name")) this.direction(null);
      else this.direction(direction);
    }
  },

  /**
     Event handler for the `click` event on the cell's anchor. If the column is
     sortable, clicking on the anchor will cycle through 3 sorting orderings -
     `ascending`, `descending`, and default.
   */
  onClick: function (e) {
    e.preventDefault();

    var columnName = this.column.get("name");

    if (this.column.get("sortable")) {
      if (this.direction() === "ascending") {
        this.sort(columnName, "descending", function (left, right) {
          var leftVal = left.get(columnName);
          var rightVal = right.get(columnName);
          if (leftVal === rightVal) {
            return 0;
          }
          else if (leftVal > rightVal) { return -1; }
          return 1;
        });
      }
      else if (this.direction() === "descending") {
        this.sort(columnName, null);
      }
      else {
        this.sort(columnName, "ascending", function (left, right) {
          var leftVal = left.get(columnName);
          var rightVal = right.get(columnName);
          if (leftVal === rightVal) {
            return 0;
          }
          else if (leftVal < rightVal) { return -1; }
          return 1;
        });
      }
    }
  },

  /**
     If the underlying collection is a Backbone.PageableCollection in
     server-mode or infinite-mode, a page of models is fetched after sorting is
     done on the server.

     If the underlying collection is a Backbone.PageableCollection in
     client-mode, or any
     [Backbone.Collection](http://backbonejs.org/#Collection) instance, sorting
     is done on the client side. If the collection is an instance of a
     Backbone.PageableCollection, sorting will be done globally on all the pages
     and the current page will then be returned.

     Triggers a Backbone `backgrid:sort` event when done.

     @param {string} columnName
     @param {null|"ascending"|"descending"} direction
     @param {function(*, *): number} [comparator]

     See [Backbone.Collection#comparator](http://backbonejs.org/#Collection-comparator)
  */
  sort: function (columnName, direction, comparator) {

    comparator = comparator || this._cidComparator;

    var collection = this.collection;

    if (Backbone.PageableCollection && collection instanceof Backbone.PageableCollection) {
      var order;
      if (direction === "ascending") order = -1;
      else if (direction === "descending") order = 1;
      else order = null;

      collection.setSorting(order ? columnName : null, order);

      if (collection.mode == "client") {
        if (!collection.fullCollection.comparator) {
          collection.fullCollection.comparator = comparator;
        }
        collection.fullCollection.sort();
      }
      else collection.fetch();
    }
    else {
      collection.comparator = comparator;
      collection.sort();
    }

    /**
       Global Backbone event. Fired when the sorter is clicked on a sortable
       column.

       @event backgrid:sort
       @param {string} columnName
       @param {null|"ascending"|"descending"} direction
       @param {function(*, *): number} comparator A Backbone.Collection#comparator.
       @param {Backbone.Collection} collection
    */
    Backbone.trigger("backgrid:sort", columnName, direction, comparator, this.collection);
  },

  /**
     Default comparator for Backbone.Collections. Sorts cids in ascending
     order. The cids of the models are assumed to be in insertion order.

     @private
     @param {*} left
     @param {*} right
  */
  _cidComparator: function (left, right) {
    var lcid = left.cid, rcid = right.cid;
    if (!_.isUndefined(lcid) && !_.isUndefined(rcid)) {
      lcid = lcid.slice(1) * 1, rcid = rcid.slice(1) * 1;
      if (lcid < rcid) return -1;
      else if (lcid > rcid) return 1;
    }

    return 0;
  },

  /**
     Renders a header cell with a sorter and a label.
   */
  render: function () {
    this.$el.empty();
    var $label = $("<a>").text(this.column.get("label")).append("<b class='sort-caret'></b>");
    this.$el.append($label);
    this.delegateEvents();
    return this;
  }

});

/**
   HeaderRow is a controller for a row of header cells.

   @class Backgrid.HeaderRow
   @extends Backgrid.Row
 */
var HeaderRow = Backgrid.HeaderRow = Backgrid.Row.extend({

  initOptionRequires: ["columns", "collection"],

  /**
     Initializer.

     @param {Object} options
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns
     @param {Backgrid.HeaderCell} [options.headerCell] Customized default
     HeaderCell for all the columns. Supply a HeaderCell class or instance to a
     the `headerCell` key in a column definition for column-specific header
     rendering.

     @throws {TypeError} If options.columns or options.collection is undefined.
   */
  initialize: function () {
    Backgrid.Row.prototype.initialize.apply(this, arguments);
  },

  makeCell: function (column, options) {
    var headerCell = column.get("headerCell") || options.headerCell || HeaderCell;
    headerCell = new headerCell({
      column: column,
      collection: this.collection
    });
    return headerCell;
  }

});

/**
   Header is a special structural view class that renders a table head with a
   single row of header cells.

   @class Backgrid.Header
   @extends Backbone.View
 */
var Header = Backgrid.Header = Backbone.View.extend({

  /** @property */
  tagName: "thead",

  /**
     Initializer. Initializes this table head view to contain a single header
     row view.

     @param {Object} options
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns Column metadata.
     @param {Backbone.Model} options.model The model instance to render.

     @throws {TypeError} If options.columns or options.model is undefined.
   */
  initialize: function (options) {
    requireOptions(options, ["columns", "collection"]);

    this.columns = options.columns;
    if (!(this.columns instanceof Backbone.Collection)) {
      this.columns = new Columns(this.columns);
    }

    this.row = new Backgrid.HeaderRow({
      columns: this.columns,
      collection: this.collection
    });
  },

  /**
     Renders this table head with a single row of header cells.
   */
  render: function () {
    this.$el.append(this.row.render().$el);
    this.delegateEvents();
    return this;
  },

  /**
     Clean up this header and its row.

     @chainable
   */
  remove: function () {
    this.row.remove.apply(this.row, arguments);
    return Backbone.View.prototype.remove.apply(this, arguments);
  }

});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   Body is the table body which contains the rows inside a table. Body is
   responsible for refreshing the rows after sorting, insertion and removal.

   @class Backgrid.Body
   @extends Backbone.View
*/
var Body = Backgrid.Body = Backbone.View.extend({

  /** @property */
  tagName: "tbody",

  /**
     Initializer.

     @param {Object} options
     @param {Backbone.Collection} options.collection
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns
     Column metadata
     @param {Backgrid.Row} [options.row=Backgrid.Row] The Row class to use.

     @throws {TypeError} If options.columns or options.collection is undefined.

     See Backgrid.Row.
  */
  initialize: function (options) {
    requireOptions(options, ["columns", "collection"]);

    this.columns = options.columns;
    if (!(this.columns instanceof Backbone.Collection)) {
      this.columns = new Columns(this.columns);
    }

    this.row = options.row || Row;
    this.rows = this.collection.map(function (model) {
      var row = new this.row({
        columns: this.columns,
        model: model
      });

      return row;
    }, this);

    var collection = this.collection;
    this.listenTo(collection, "add", this.insertRow);
    this.listenTo(collection, "remove", this.removeRow);
    this.listenTo(collection, "sort", this.refresh);
    this.listenTo(collection, "reset", this.refresh);
  },

  /**
     This method can be called either directly or as a callback to a
     [Backbone.Collecton#add](http://backbonejs.org/#Collection-add) event.

     When called directly, it accepts a model or an array of models and an
     option hash just like
     [Backbone.Collection#add](http://backbonejs.org/#Collection-add) and
     delegates to it. Once the model is added, a new row is inserted into the
     body and automatically rendered.

     When called as a callback of an `add` event, splices a new row into the
     body and renders it.

     @param {Backbone.Model} model The model to render as a row.
     @param {Backbone.Collection} collection When called directly, this
     parameter is actually the options to
     [Backbone.Collection#add](http://backbonejs.org/#Collection-add).
     @param {Object} options When called directly, this must be null.

     See:

     - [Backbone.Collection#add](http://backbonejs.org/#Collection-add)
  */
  insertRow: function (model, collection, options) {

    // insertRow() is called directly
    if (!(collection instanceof Backbone.Collection) && !options) {
      this.collection.add(model, (options = collection));
      return;
    }

    options = _.extend({render: true}, options || {});

    var row = new this.row({
      columns: this.columns,
      model: model
    });

    var index = collection.indexOf(model);
    this.rows.splice(index, 0, row);

    var $el = this.$el;
    var $children = $el.children();
    var $rowEl = row.render().$el;

    if (options.render) {
      if (index >= $children.length) {
        $el.append($rowEl);
      }
      else {
        $children.eq(index).before($rowEl);
      }
    }
  },

  /**
     The method can be called either directly or as a callback to a
     [Backbone.Collection#remove](http://backbonejs.org/#Collection-remove)
     event.

     When called directly, it accepts a model or an array of models and an
     option hash just like
     [Backbone.Collection#remove](http://backbonejs.org/#Collection-remove) and
     delegates to it. Once the model is removed, a corresponding row is removed
     from the body.

     When called as a callback of a `remove` event, splices into the rows and
     removes the row responsible for rendering the model.

     @param {Backbone.Model} model The model to remove from the body.
     @param {Backbone.Collection} collection When called directly, this
     parameter is actually the options to
     [Backbone.Collection#remove](http://backbonejs.org/#Collection-remove).
     @param {Object} options When called directly, this must be null.

     See:

     - [Backbone.Collection#remove](http://backbonejs.org/#Collection-remove)
  */
  removeRow: function (model, collection, options) {

    // removeRow() is called directly
    if (!options) {
      this.collection.remove(model, (options = collection));
      return;
    }

    if (_.isUndefined(options.render) || options.render) {
      this.rows[options.index].remove();
    }

    this.rows.splice(options.index, 1);
  },

  /**
     Reinitialize all the rows inside the body and re-render them. Triggers a
     Backbone `backgrid:refresh` event along with the body instance as its event
     parameter when done.
  */
  refresh: function () {
    for (var i = 0; i < this.rows.length; i++) {
      this.rows[i].remove();
    }

    this.rows = this.collection.map(function (model) {
      var row = new this.row({
        columns: this.columns,
        model: model
      });

      return row;
    }, this);

    this.render();

    Backbone.trigger("backgrid:refresh", this);

    return this;
  },

  /**
     Renders all the rows inside this body.
  */
  render: function () {

    this.$el.empty();

    var fragment = document.createDocumentFragment();
    for (var i = 0; i < this.rows.length; i++) {
      var row = this.rows[i];
      fragment.appendChild(row.render().el);
    }

    this.el.appendChild(fragment);

    this.delegateEvents();

    return this;
  },

  /**
     Clean up this body and it's rows.

     @chainable
   */
  remove: function () {
    for (var i = 0; i < this.rows.length; i++) {
      var row = this.rows[i];
      row.remove.apply(row, arguments);
    }
    return Backbone.View.prototype.remove.apply(this, arguments);
  }

});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   A Footer is a generic class that only defines a default tag `tfoot` and
   number of required parameters in the initializer.

   @abstract
   @class Backgrid.Footer
   @extends Backbone.View
 */
var Footer = Backgrid.Footer = Backbone.View.extend({

  /** @property */
  tagName: "tfoot",

  /**
     Initializer.

     @param {Object} options
     @param {*} options.parent The parent view class of this footer.
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns
     Column metadata.
     @param {Backbone.Collection} options.collection

     @throws {TypeError} If options.columns or options.collection is undefined.
  */
  initialize: function (options) {
    requireOptions(options, ["columns", "collection"]);
    this.parent = options.parent;
    this.columns = options.columns;
    if (!(this.columns instanceof Backbone.Collection)) {
      this.columns = new Backgrid.Columns(this.columns);
    }
  }

});
/*
  backgrid
  http://github.com/wyuenho/backgrid

  Copyright (c) 2013 Jimmy Yuen Ho Wong and contributors
  Licensed under the MIT @license.
*/

/**
   Grid represents a data grid that has a header, body and an optional footer.

   By default, a Grid treats each model in a collection as a row, and each
   attribute in a model as a column. To render a grid you must provide a list of
   column metadata and a collection to the Grid constructor. Just like any
   Backbone.View class, the grid is rendered as a DOM node fragment when you
   call render().

       var grid = Backgrid.Grid({
         columns: [{ name: "id", label: "ID", type: "string" },
          // ...
         ],
         collections: books
       });

       $("#table-container").append(grid.render().el);

   Optionally, if you want to customize the rendering of the grid's header and
   footer, you may choose to extend Backgrid.Header and Backgrid.Footer, and
   then supply that class or an instance of that class to the Grid constructor.
   See the documentation for Header and Footer for further details.

       var grid = Backgrid.Grid({
         columns: [{ name: "id", label: "ID", type: "string" }],
         collections: books,
         header: Backgrid.Header.extend({
              //...
         }),
         footer: Backgrid.Paginator
       });

   Finally, if you want to override how the rows are rendered in the table body,
   you can supply a Body subclass as the `body` attribute that uses a different
   Row class.

   @class Backgrid.Grid
   @extends Backbone.View

   See:

   - Backgrid.Column
   - Backgrid.Header
   - Backgrid.Body
   - Backgrid.Row
   - Backgrid.Footer
*/
var Grid = Backgrid.Grid = Backbone.View.extend({

  /** @property */
  tagName: "table",

  /** @property */
  className: "backgrid",

  /** @property */
  header: Header,

  /** @property */
  body: Body,

  /** @property */
  footer: null,

  /**
     Initializes a Grid instance.

     @param {Object} options
     @param {Backbone.Collection.<Backgrid.Column>|Array.<Backgrid.Column>|Array.<Object>} options.columns Column metadata.
     @param {Backbone.Collection} options.collection The collection of tabular model data to display.
     @param {Backgrid.Header} [options.header=Backgrid.Header] An optional Header class to override the default.
     @param {Backgrid.Body} [options.body=Backgrid.Body] An optional Body class to override the default.
     @param {Backgrid.Row} [options.row=Backgrid.Row] An optional Row class to override the default.
     @param {Backgrid.Footer} [options.footer=Backgrid.Footer] An optional Footer class.
   */
  initialize: function (options) {
    requireOptions(options, ["columns", "collection"]);

    // Convert the list of column objects here first so the subviews don't have
    // to.
    if (!(options.columns instanceof Backbone.Collection)) {
      options.columns = new Columns(options.columns);
    }
    this.columns = options.columns;

    this.header = options.header || this.header;
    this.header = new this.header(options);

    this.body = options.body || this.body;
    this.body = new this.body(options);

    this.footer = options.footer || this.footer;
    if (this.footer) {
      this.footer = new this.footer(options);
    }

    this.listenTo(this.columns, "reset", function () {
      this.header = new (this.header.remove().constructor)(options);
      this.body = new (this.body.remove().constructor)(options);
      if (this.footer) this.footer = new (this.footer.remove().constructor)(options);
      this.render();
    });
  },

  /**
     Delegates to Backgrid.Body#insertRow.
   */
  insertRow: function (model, collection, options) {
    return this.body.insertRow(model, collection, options);
  },

  /**
     Delegates to Backgrid.Body#removeRow.
   */
  removeRow: function (model, collection, options) {
    return this.body.removeRow(model, collection, options);
  },

  /**
     Delegates to Backgrid.Columns#add for adding a column. Subviews can listen
     to the `add` event from their internal `columns` if rerendering needs to
     happen.

     @param {Object} [options] Options for `Backgrid.Columns#add`.
     @param {boolean} [options.render=true] Whether to render the column
     immediately after insertion.

     @chainable
   */
  insertColumn: function (column, options) {
    options = options || {render: true};
    this.columns.add(column, options);
    return this;
  },

  /**
     Delegates to Backgrid.Columns#remove for removing a column. Subviews can
     listen to the `remove` event from the internal `columns` if rerendering
     needs to happen.

     @param {Object} [options] Options for `Backgrid.Columns#remove`.

     @chainable
   */
  removeColumn: function (column, options) {
    this.columns.remove(column, options);
    return this;
  },

  /**
     Renders the grid's header, then footer, then finally the body. Triggers a
     Backbone `backgrid:rendered` event along with a reference to the grid when
     the it has successfully been rendered.
   */
  render: function () {
    this.$el.empty();

    this.$el.append(this.header.render().$el);

    if (this.footer) {
      this.$el.append(this.footer.render().$el);
    }

    this.$el.append(this.body.render().$el);

    this.delegateEvents();

    this.trigger("backgrid:rendered", this);

    return this;
  },

  /**
     Clean up this grid and its subviews.

     @chainable
   */
  remove: function () {
    this.header.remove.apply(this.header, arguments);
    this.body.remove.apply(this.body, arguments);
    this.footer && this.footer.remove.apply(this.footer, arguments);
    return Backbone.View.prototype.remove.apply(this, arguments);
  }

});
}(this, jQuery, _, Backbone));