protected function render()
    {
        if (!isset($this->items[0])) {
            return '';
        }
        foreach ($this->items as $itemId => $item) {
            $item->setCollapsable(
                self::$id, 
                self::$id . $itemId, 
                in_array($itemId, $this->openedItems));
        }
        $this->setAttribute('id', self::$id);
        $this->addCssClass($this->itemType . '-group');
        return $this
            ->html('<div' . $this->getEltDecorationStr() . '>')
            ->html(implode("\n", $this->items))
            ->html('</div>')
            ->getHtml();
    }
protected function render()
    {
        if (!isset($this->items[0])) {
            return '';
        }
        foreach ($this->items as $itemId => $item) {
            $item->setCollapsable(
                self::$id, 
                self::$id . $itemId, 
                in_array($itemId, $this->openedItems));
        }
        $this->setAttribute('id', self::$id);
        $this->addCssClass($this->itemType . '-group');
        return $this
            ->html('<div' . $this->getEltDecorationStr() . '>')
            ->html(implode("\n", $this->items))
            ->html('</div>')
            ->getHtml();
    }
protected function render ( ) { if ( ! isset ( $ this -> items [ 0 ] ) ) { return '' ; } foreach ( $ this -> items as $ itemId => $ item ) { $ item -> setCollapsable ( self :: $ id , self :: $ id . $ itemId , in_array ( $ itemId , $ this -> openedItems ) ) ; } $ this -> setAttribute ( 'id' , self :: $ id ) ; $ this -> addCssClass ( $ this -> itemType . '-group' ) ; return $ this -> html ( '<div' . $ this -> getEltDecorationStr ( ) . '>' ) -> html ( implode ( "\n" , $ this -> items ) ) -> html ( '</div>' ) -> getHtml ( ) ; }
Display the box at the end of configuration
@return string
Display the box at the end of configuration