#ifndef ShadowRoot_h
#define ShadowRoot_h
#include "Document.h"
#include "DocumentFragment.h"
#include "Element.h"
#include "ExceptionCode.h"
#include "TreeScope.h"
#include <wtf/DoublyLinkedList.h>
namespace WebCore {
class Document;
class DOMSelection;
class HTMLContentElement;
class HTMLContentSelector;
class InsertionPoint;
class ShadowTree;
class ShadowRoot : public DocumentFragment, public TreeScope, public DoublyLinkedListNode<ShadowRoot> {
friend class WTF::DoublyLinkedListNode<ShadowRoot>;
public:
static PassRefPtr<ShadowRoot> create(Element*, ExceptionCode&);
enum ShadowRootCreationPurpose {
CreatingUserAgentShadowRoot,
CreatingAuthorShadowRoot,
};
static PassRefPtr<ShadowRoot> create(Element*, ShadowRootCreationPurpose, ExceptionCode& = ASSERT_NO_EXCEPTION);
void recalcShadowTreeStyle(StyleChange);
void setNeedsReattachHostChildrenAndShadow();
void clearNeedsReattachHostChildrenAndShadow();
bool needsReattachHostChildrenAndShadow();
InsertionPoint* insertionPointFor(Node*) const;
void hostChildrenChanged();
virtual bool applyAuthorSheets() const;
void setApplyAuthorSheets(bool);
Element* host() const { return shadowHost(); }
ShadowTree* tree() const;
String innerHTML() const;
void setInnerHTML(const String&, ExceptionCode&);
Element* activeElement() const;
DOMSelection* selection();
ShadowRoot* youngerShadowRoot() const { return prev(); }
ShadowRoot* olderShadowRoot() const { return next(); }
bool isYoungest() const { return !youngerShadowRoot(); }
bool isOldest() const { return !olderShadowRoot(); }
bool hasInsertionPoint() const;
virtual void attach();
bool isUsedForRendering() const;
InsertionPoint* assignedTo() const;
void setAssignedTo(InsertionPoint*);
private:
ShadowRoot(Document*);
virtual ~ShadowRoot();
virtual String nodeName() const;
virtual PassRefPtr<Node> cloneNode(bool deep);
virtual bool childTypeAllowed(NodeType) const;
ShadowRoot* m_prev;
ShadowRoot* m_next;
bool m_applyAuthorSheets : 1;
InsertionPoint* m_insertionPointAssignedTo;
};
inline InsertionPoint* ShadowRoot::assignedTo() const
{
return m_insertionPointAssignedTo;
}
inline void ShadowRoot::setAssignedTo(InsertionPoint* insertionPoint)
{
ASSERT(!m_insertionPointAssignedTo || !insertionPoint);
m_insertionPointAssignedTo = insertionPoint;
}
inline bool ShadowRoot::isUsedForRendering() const
{
return isYoungest() || assignedTo();
}
inline Element* ShadowRoot::activeElement() const
{
if (Node* node = treeScope()->focusedNode())
return node->isElementNode() ? toElement(node) : 0;
return 0;
}
inline const ShadowRoot* toShadowRoot(const Node* node)
{
ASSERT(!node || node->isShadowRoot());
return static_cast<const ShadowRoot*>(node);
}
inline ShadowRoot* toShadowRoot(Node* node)
{
return const_cast<ShadowRoot*>(toShadowRoot(static_cast<const Node*>(node)));
}
}
#endif