CFormInputElement

protected function evaluateVisible()
{
    return $this->getParent()->getModel()->isAttributeSafe($this->name);
}

public function getLabel()
{
    if($this->_label!==null)
        return $this->_label;
    else
        return $this->getParent()->getModel()->getAttributeLabel($this->name);
}

public function getRequired()
{
    if($this->_required!==null)
        return $this->_required;
    else
        return $this->getParent()->getModel()->isAttributeRequired($this->name);
}

public function render()
{
    if($this->type==='hidden')
        return $this->renderInput();
    $output=array(
        '{label}'=>$this->renderLabel(),
        '{input}'=>$this->renderInput(),
        '{hint}'=>$this->renderHint(),
        '{error}'=>$this->getParent()->showErrorSummary ? '' : $this->renderError(),
    );
    return strtr($this->layout,$output);
}

public function renderError()
{
    $parent=$this->getParent();
    return $parent->getActiveFormWidget()->error($parent->getModel(), $this->name, $this->errorOptions, $this->enableAjaxValidation, $this->enableClientValidation);
}

public function renderHint()
{
    return $this->hint===null ? '' : '<div class="hint">'.$this->hint.'</div>';
}

public function renderInput()
{
    if(isset(self::$coreTypes[$this->type]))
    {
        $method=self::$coreTypes[$this->type];
        if(strpos($method,'List')!==false)
            return CHtml::$method($this->getParent()->getModel(), $this->name, $this->items, $this->attributes);
        else
            return CHtml::$method($this->getParent()->getModel(), $this->name, $this->attributes);
    }
    else
    {
        $attributes=$this->attributes;
        $attributes['model']=$this->getParent()->getModel();
        $attributes['attribute']=$this->name;
        ob_start();
        $this->getParent()->getOwner()->widget($this->type, $attributes);
        return ob_get_clean();
    }
}

public function renderLabel()
{
    $options = array(
        'label'=>$this->getLabel(),
        'required'=>$this->getRequired()
    );

    if(!empty($this->attributes['id']))
    {
        $options['for'] = $this->attributes['id'];
    }

    return CHtml::activeLabel($this->getParent()->getModel(), $this->name, $options);
}

public function setLabel($value)
{
    $this->_label=$value;
}

public function setRequired($value)
{
    $this->_required=$value;
}