Node* Next()
{
if (state == 0) {
state = 1;
node = directory->Parent();
if (node == NULL)
node = directory;
return node;
}
if (state == 1) {
node = directory->FirstChild();
state = 2;
} else {
if (node != NULL)
node = directory->NextChild(node);
}
if (node == NULL) {
if (registered) {
directory->RemoveDirectoryIterator(this);
registered = false;
}
return NULL;
}
if (!registered) {
directory->AddDirectoryIterator(this);
registered = true;
}
return node;
}
void Rewind()
{
if (registered)
directory->RemoveDirectoryIterator(this);
registered = false;
state = 0;
node = directory;
}
~DirectoryCookie()
{
if (registered)
directory->RemoveDirectoryIterator(this);
}