text: /**
   * A Column definition class which renders boolean data fields.  See the {@link Ext.grid.column.Column#xtype xtype}
   * config option of {@link Ext.grid.column.Column} for more details.
   *
   *     @example
   *     var store = Ext.create('Ext.data.Store', {
   *        fields: [
   *            {name: 'framework', type: 'string'},
   *            {name: 'rocks', type: 'boolean'}
   *        ],
   *        data: [
   *            { framework: 'Ext JS 5', rocks: true },
   *            { framework: 'Ext GWT', rocks: true },
   *            { framework: 'Other Guys', rocks: false }
   *        ]
   *     });
   *
   *     Ext.create('Ext.grid.Panel', {
   *         title: 'Boolean Column Demo',
   *         store: store,
   *         columns: [
   *             { text: 'Framework',  dataIndex: 'framework', flex: 1 },
   *             {
   *                 xtype: 'booleancolumn',
   *                 text: 'Rocks',
   *                 trueText: 'Yes',
   *                 falseText: 'No',
   *                 dataIndex: 'rocks'
   *             }
   *         ],
   *         height: 200,
   *         width: 400,
   *         renderTo: Ext.getBody()
   *     });
   */
  Ext.define('Ext.grid.column.Boolean', {
      extend: 'Ext.grid.column.Column',
      alias: ['widget.booleancolumn'],
      alternateClassName: 'Ext.grid.BooleanColumn',
  
      /**
       * @cfg {String} trueText
       * The string returned by the renderer when the column value is not falsey.
       * @locale
       */
      trueText: 'true',
  
      /**
       * @cfg {String} falseText
       * The string returned by the renderer when the column value is falsey (but not undefined).
       * @locale
       */
      falseText: 'false',
  
      /**
       * @cfg {String} undefinedText
       * The string returned by the renderer when the column value is undefined.
       */
      undefinedText: '\u00a0',
  
      defaultFilterType: 'boolean',
  
      /**
       * @cfg {Object} renderer
       * @hide
       */
  
      /**
       * @cfg {Object} scope
       * @hide
       */
  
       /**
       * @cfg producesHTML
       * @inheritdoc
       */
      producesHTML: false,
  
      defaultRenderer: function(value){
          if (value === undefined) {
              return this.undefinedText;
          }
  
          if (!value || value === 'false') {
              return this.falseText;
          }
          return this.trueText;
      },
  
      updater: function(cell, value) {
          Ext.fly(cell).down(this.getView().innerSelector, true).innerHTML = Ext.grid.column.Boolean.prototype.defaultRenderer.call(this, value);
      }
  });
  