#ifndef FocusController_h
#define FocusController_h
#include "FocusDirection.h"
#include "LayoutTypes.h"
#include <wtf/Forward.h>
#include <wtf/Noncopyable.h>
#include <wtf/RefPtr.h>
namespace WebCore {
struct FocusCandidate;
class Document;
class Element;
class Frame;
class HTMLFrameOwnerElement;
class IntRect;
class KeyboardEvent;
class Node;
class Page;
class TreeScope;
class FocusScope {
public:
Node* rootNode() const;
Element* owner() const;
static FocusScope focusScopeOf(Node*);
static FocusScope focusScopeOwnedByShadowHost(Node*);
static FocusScope focusScopeOwnedByIFrame(HTMLFrameOwnerElement*);
private:
explicit FocusScope(TreeScope*);
TreeScope* m_rootTreeScope;
};
class FocusController {
WTF_MAKE_NONCOPYABLE(FocusController); WTF_MAKE_FAST_ALLOCATED;
public:
static PassOwnPtr<FocusController> create(Page*);
void setFocusedFrame(PassRefPtr<Frame>);
Frame* focusedFrame() const { return m_focusedFrame.get(); }
Frame* focusedOrMainFrame() const;
bool setInitialFocus(FocusDirection, KeyboardEvent*);
bool advanceFocus(FocusDirection, KeyboardEvent*, bool initialFocus = false);
bool setFocusedNode(Node*, PassRefPtr<Frame>);
void setActive(bool);
bool isActive() const { return m_isActive; }
void setFocused(bool);
bool isFocused() const { return m_isFocused; }
void setContainingWindowIsVisible(bool);
bool containingWindowIsVisible() const { return m_containingWindowIsVisible; }
private:
FocusController(Page*);
bool advanceFocusDirectionally(FocusDirection, KeyboardEvent*);
bool advanceFocusInDocumentOrder(FocusDirection, KeyboardEvent*, bool initialFocus);
Node* findFocusableNodeAcrossFocusScope(FocusDirection, FocusScope startScope, Node* start, KeyboardEvent*);
Node* findFocusableNodeRecursively(FocusDirection, FocusScope, Node* start, KeyboardEvent*);
Node* findFocusableNodeDecendingDownIntoFrameDocument(FocusDirection, Node*, KeyboardEvent*);
inline Node* findFocusableNode(FocusDirection, FocusScope, Node* start, KeyboardEvent*);
Node* nextFocusableNode(FocusScope, Node* start, KeyboardEvent*);
Node* previousFocusableNode(FocusScope, Node* start, KeyboardEvent*);
Node* findNodeWithExactTabIndex(Node* start, int tabIndex, KeyboardEvent*, FocusDirection);
bool advanceFocusDirectionallyInContainer(Node* container, const LayoutRect& startingRect, FocusDirection, KeyboardEvent*);
void findFocusCandidateInContainer(Node* container, const LayoutRect& startingRect, FocusDirection, KeyboardEvent*, FocusCandidate& closest);
Page* m_page;
RefPtr<Frame> m_focusedFrame;
bool m_isActive;
bool m_isFocused;
bool m_isChangingFocusedFrame;
bool m_containingWindowIsVisible;
};
}
#endif // FocusController_h