/**
* The place to check if the data set in the snippet is valid
* to generate the snippet.
*
* When invalid data should result in an error, you can throw it
* here but you can also perform the check in the
* checkRegistryRequestsAnswers() function from the
* {@see \MUtil_Registry_TargetInterface}.
*
* @return boolean
*/
public function hasHtmlOutput()
{
if (!$this->repeater) {
$this->repeater = \MUtil_Lazy::repeat($this->data);
} else {
// We do not know whether there is any link between
// the data and the repeater, so do not use the data
$this->data = null;
}
// If onEmpty is set, we alwars have output
if ($this->onEmpty) {
return true;
}
// Is there any data in the repeater?
return $this->repeater->__start();
}
/**
* Function to allow overloading of content rendering only
*
* The $view is used to correctly encode and escape the output
*
* @param \Zend_View_Abstract $view
* @return string Correctly encoded and escaped html output
*/
protected function renderContent(\Zend_View_Abstract $view)
{
$renderer = \MUtil_Html::getRenderer();
if ($this->_content) {
if ($this->_repeater && !$this->_repeatTags) {
if ($this->_repeater->__start()) {
$html = '';
while ($this->_repeater->__next()) {
$html .= $renderer->renderArray($view, $this->_content);
}
return $html;
}
} else {
$content = $renderer->renderArray($view, $this->_content);
if (strlen($content)) {
return $content;
}
}
}
if ($this->_onEmptyContent) {
return $renderer->renderArray($view, $this->_onEmptyContent);
}
return null;
}
