#ifndef NodeIterator_h
#define NodeIterator_h
#include "NodeFilter.h"
#include "ScriptWrappable.h"
#include "Traversal.h"
#include <wtf/RefCounted.h>
namespace WebCore {
typedef int ExceptionCode;
class NodeIterator : public ScriptWrappable, public RefCounted<NodeIterator>, public NodeIteratorBase {
public:
static Ref<NodeIterator> create(Node& rootNode, unsigned long whatToShow, RefPtr<NodeFilter>&& filter)
{
return adoptRef(*new NodeIterator(rootNode, whatToShow, WTFMove(filter)));
}
~NodeIterator();
RefPtr<Node> nextNode();
RefPtr<Node> previousNode();
void detach();
Node* referenceNode() const { return m_referenceNode.node.get(); }
bool pointerBeforeReferenceNode() const { return m_referenceNode.isPointerBeforeNode; }
void nodeWillBeRemoved(Node&);
private:
NodeIterator(Node&, unsigned long whatToShow, RefPtr<NodeFilter>&&);
struct NodePointer {
RefPtr<Node> node;
bool isPointerBeforeNode { true };
NodePointer() = default;
NodePointer(Node&, bool);
void clear();
bool moveToNext(Node& root);
bool moveToPrevious(Node& root);
};
void updateForNodeRemoval(Node& nodeToBeRemoved, NodePointer&) const;
NodePointer m_referenceNode;
NodePointer m_candidateNode;
};
}
#endif // NodeIterator_h