url = $url;
} else {
$this->url = Url::fromPath($url);
}
$this->defaultRenderer = new MenuItemRenderer();
parent::__construct(new PermittedMenuItemFilter($menu), RecursiveIteratorIterator::CHILD_FIRST);
}
/**
* @param bool $value
*/
public function useCustomRenderer($value = true)
{
$this->useCustomRenderer = $value;
return $this;
}
/**
* Register the outer ul opening html-tag
*/
public function beginIteration()
{
$this->tags[] = '';
}
/**
* Register the outer ul closing html-tag
*/
public function endIteration()
{
$this->tags[] = '
';
}
/**
* Register a inner ul opening html-tag
*/
public function beginChildren()
{
// The iterator runs in mode CHILD_FIRST so we need to remember
// where to insert the parent's opening html tag once its rendered
$parent = $this->getSubIterator(0)->current();
$this->tags[$parent->getId() . '_begin'] = null;
$this->tags[] = '';
}
/**
* Register a inner ul closing html-tag
*/
public function endChildren()
{
$this->tags[] = '
';
// Remember the position of the parent's closing html-tag
$parent = $this->getSubIterator(0)->current();
$this->tags[$parent->getId() . '_end'] = null;
}
/**
* Render the given child
*
* @param Menu $child The menu's child to render
*
* @return string The child rendered as html
*/
public function renderChild(Menu $child)
{
if ($child->getRenderer() !== null && $this->useCustomRenderer) {
try {
return $child->getRenderer()->render($child);
} catch (Exception $e) {
Logger::error('Could not invoke custom renderer. Exception: '. $e->getMessage());
}
}
return $this->defaultRenderer->render($child);
}
/**
* Return the menu rendered as html
*
* @return string
*/
public function render()
{
$passedActiveChild = false;
foreach ($this as $child) {
$childIsActive = $this->isActive($child);
if ($childIsActive && $this->getDepth() > 0) {
$passedActiveChild = true;
}
if ($childIsActive || ($passedActiveChild && $this->getDepth() === 0)) {
$passedActiveChild &= $this->getDepth() !== 0;
$openTag = '';
} else {
$openTag = '';
}
$content = $this->renderChild($child);
$closingTag = '';
if (array_key_exists($child->getId() . '_begin', $this->tags)) {
$this->tags[$child->getId() . '_begin'] = $openTag . $content;
$this->tags[$child->getId() . '_end'] = $closingTag;
} else {
$this->tags[] = $openTag . $content . $closingTag;
}
}
return implode("\n", $this->tags);
}
/**
* @see MenuRenderer::render()
*/
public function __toString()
{
return $this->render();
}
/**
* Return whether the current request url references the child's url
*
* @param Menu $child The menu's child to check
*
* @return bool
*/
protected function isActive(Menu $child)
{
if (! $this->url) return false;
if (! ($childUrl = $child->getUrl())) return false;
return $this->url && $this->url->matches($childUrl);
}
}