public function removeChild($childNode)
{
$this->_childNodes->delete($childNode);
return $this;
}
/**
* Enter description here...
*
* @param unknown_type $nodeId
* @return Varien_Data_Tree_Node
*/
public function getNodeById($nodeId)
{
return $this->_nodes->searchById($nodeId);
}
/**
* Expand recursively hidden (include_in_menu = 0) categories. Preserve
* order of categories. Hide empty (no subcategories) and hidden categories.
*
* @param Varien_Data_Tree_Node_Collection $categories Collection of nodes
* @return Varien_Data_Tree_Node_Collection
*/
protected function _expandCategories($categories)
{
if (!$categories->count()) {
return $categories;
}
foreach ($categories as $id => $category) {
$children = $this->_expandCategories($category->getChildren());
$noChildren = !$children->count();
$notIncludeInMenu = !$category->getIncludeInMenu();
//Hide empty and not included in menu categories
if ($notIncludeInMenu && $noChildren) {
$categories->delete($category);
continue;
}
//Ignore empty categories
if ($noChildren) {
continue;
}
//Remember hidden category to expand on next step
if ($notIncludeInMenu) {
$replace[$id] = true;
}
}
if (isset($replace)) {
//Expand hidden categories and re-add visible categories as is to preserve
//original order
foreach ($categories as $id => $category) {
$categories->delete($category);
if (isset($replace[$id])) {
//Copy level and position values of expanded category to it's children
$level = $category->getLevel();
$position = $category->getPosition();
foreach ($category->getChildren() as $child) {
$child->setLevel($level)->setPosition($position);
$category->removeChild($child);
$categories->add($child);
}
} else {
$categories->add($category);
}
}
}
return $categories;
}