renderDropdown() protected method
Normalizes dropdown item options by removing tab specific keys content and contentOptions, and also configure panes accordingly.
protected boolean renderDropdown ( $itemNumber, &$items, &$panes )$itemNumber string
Number of the item $items array
The dropdown items configuration. $panes array
The panes reference array. return boolean
Whether any of the dropdown items is active or not. throws yii\base\InvalidConfigException