#ifndef VisiblePosition_h
#define VisiblePosition_h
#include "Position.h"
namespace WebCore {
#define VP_DEFAULT_AFFINITY DOWNSTREAM
#define VP_UPSTREAM_IF_POSSIBLE UPSTREAM
class VisiblePosition {
public:
VisiblePosition() : m_affinity(VP_DEFAULT_AFFINITY) { }
VisiblePosition(Node*, int offset, EAffinity);
VisiblePosition(const Position&, EAffinity = VP_DEFAULT_AFFINITY);
void clear() { m_deepPosition.clear(); }
bool isNull() const { return m_deepPosition.isNull(); }
bool isNotNull() const { return m_deepPosition.isNotNull(); }
Position deepEquivalent() const { return m_deepPosition; }
EAffinity affinity() const { ASSERT(m_affinity == UPSTREAM || m_affinity == DOWNSTREAM); return m_affinity; }
void setAffinity(EAffinity affinity) { m_affinity = affinity; }
VisiblePosition next(bool stayInEditableContent = false) const;
VisiblePosition previous(bool stayInEditableContent = false) const;
VisiblePosition honorEditableBoundaryAtOrBefore(const VisiblePosition&) const;
VisiblePosition honorEditableBoundaryAtOrAfter(const VisiblePosition&) const;
UChar characterAfter() const;
UChar characterBefore() const { return previous().characterAfter(); }
void debugPosition(const char* msg = "") const;
Element* rootEditableElement() const { return m_deepPosition.isNotNull() ? m_deepPosition.node()->rootEditableElement() : 0; }
IntRect caretRect() const;
#ifndef NDEBUG
void formatForDebugger(char* buffer, unsigned length) const;
void showTreeForThis() const;
#endif
private:
void init(const Position&, EAffinity);
Position canonicalPosition(const Position&);
Position m_deepPosition;
EAffinity m_affinity;
};
inline bool operator==(const VisiblePosition& a, const VisiblePosition& b)
{
return a.deepEquivalent() == b.deepEquivalent();
}
inline bool operator!=(const VisiblePosition& a, const VisiblePosition& b)
{
return !(a == b);
}
PassRefPtr<Range> makeRange(const VisiblePosition&, const VisiblePosition&);
bool setStart(Range*, const VisiblePosition&);
bool setEnd(Range*, const VisiblePosition&);
VisiblePosition startVisiblePosition(const Range*, EAffinity);
VisiblePosition endVisiblePosition(const Range*, EAffinity);
Node *enclosingBlockFlowElement(const VisiblePosition&);
bool isFirstVisiblePositionInNode(const VisiblePosition&, const Node*);
bool isLastVisiblePositionInNode(const VisiblePosition&, const Node*);
}
#ifndef NDEBUG
void showTree(const WebCore::VisiblePosition*);
void showTree(const WebCore::VisiblePosition&);
#endif
#endif // VisiblePosition_h