text: /**
   * A {@link Ext.form.FieldContainer field container} which has a specialized layout for arranging
   * {@link Ext.form.field.Radio} controls into columns, and provides convenience {@link Ext.form.field.Field}
   * methods for {@link #getValue getting}, {@link #setValue setting}, and {@link #validate validating} the
   * group of radio buttons as a whole.
   *
   * # Validation
   *
   * Individual radio buttons themselves have no default validation behavior, but
   * sometimes you want to require a user to select one of a group of radios. RadioGroup
   * allows this by setting the config `{@link #allowBlank}:false`; when the user does not check at
   * one of the radio buttons, the entire group will be highlighted as invalid and the
   * {@link #blankText error message} will be displayed according to the {@link #msgTarget} config.
   *
   * # Layout
   *
   * The default layout for RadioGroup makes it easy to arrange the radio buttons into
   * columns; see the {@link #columns} and {@link #vertical} config documentation for details. You may also
   * use a completely different layout by setting the {@link #layout} to one of the other supported layout
   * types; for instance you may wish to use a custom arrangement of hbox and vbox containers. In that case
   * the Radio components at any depth will still be managed by the RadioGroup's validation.
   *
   * # Example usage
   *
   *     @example
   *     Ext.create('Ext.form.Panel', {
   *         title: 'RadioGroup Example',
   *         width: 300,
   *         height: 125,
   *         bodyPadding: 10,
   *         renderTo: Ext.getBody(),
   *         items:[{
   *             xtype: 'radiogroup',
   *             fieldLabel: 'Two Columns',
   *             // Arrange radio buttons into two columns, distributed vertically
   *             columns: 2,
   *             vertical: true,
   *             items: [
   *                 { boxLabel: 'Item 1', name: 'rb', inputValue: '1' },
   *                 { boxLabel: 'Item 2', name: 'rb', inputValue: '2', checked: true},
   *                 { boxLabel: 'Item 3', name: 'rb', inputValue: '3' },
   *                 { boxLabel: 'Item 4', name: 'rb', inputValue: '4' },
   *                 { boxLabel: 'Item 5', name: 'rb', inputValue: '5' },
   *                 { boxLabel: 'Item 6', name: 'rb', inputValue: '6' }
   *             ]
   *         }]
   *     });
   *
   */
  Ext.define('Ext.form.RadioGroup', {
      extend: 'Ext.form.CheckboxGroup',
      alias: 'widget.radiogroup',
  
      /**
       * @cfg {Ext.form.field.Radio[]/Object[]} items
       * An Array of {@link Ext.form.field.Radio Radio}s or Radio config objects to arrange in the group.
       */
      /**
       * @cfg {Boolean} allowBlank
       * True to allow every item in the group to be blank.
       * If allowBlank = false and no items are selected at validation time, {@link #blankText} will
       * be used as the error text.
       */
      allowBlank : true,
      /**
       * @cfg {String} blankText
       * Error text to display if the {@link #allowBlank} validation fails
       */
      //<locale>
      blankText : 'You must select one item in this group',
      //</locale>
  
      // private
      defaultType : 'radiofield',
  
      // private
      groupCls : Ext.baseCSSPrefix + 'form-radio-group',
  
      getBoxes: function(query) {
          return this.query('[isRadio]' + (query||''));
      },
      
      checkChange: function() {
          var value = this.getValue(),
              key = Ext.Object.getKeys(value)[0];
              
          // If the value is an array we skip out here because it's during a change
          // between multiple items, so we never want to fire a change
          if (Ext.isArray(value[key])) {
              return;
          }
          this.callParent(arguments);    
      },
  
      /**
       * Sets the value of the radio group. The radio with corresponding name and value will be set.
       * This method is simpler than {@link Ext.form.CheckboxGroup#setValue} because only 1 value is allowed
       * for each name.
       * 
       * @param {Object} value The map from names to values to be set.
       * @return {Ext.form.CheckboxGroup} this
       */
      setValue: function(value) {
          var cbValue, first, formId, radios,
              i, len, name;
  
          if (Ext.isObject(value)) {
              for (name in value) {
                  if (value.hasOwnProperty(name)) {
                      cbValue = value[name];
                      first = this.items.first();
                      formId = first ? first.getFormId() : null;
                      radios = Ext.form.RadioManager.getWithValue(name, cbValue, formId).items;
                      len = radios.length;
  
                      for (i = 0; i < len; ++i) {
                          radios[i].setValue(true);
                      }
                  }
              }
          }
          return this;
      }
  });
  