YiFocusZoneView.h

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// © You i Labs Inc. 2000-2018. All rights reserved.
#ifndef _YI_FOCUS_ZONE_VIEW_H_
#define _YI_FOCUS_ZONE_VIEW_H_

#include "scenetree/YiSceneNodeProxy.h"
#include "view/YiSceneView.h"

#include <memory>

class CYIFocusZoneView : public CYISceneView
{
public:
    CYIFocusZoneView();

    virtual ~CYIFocusZoneView();

    virtual bool RequestFocus(CYIFocus::FOCUS_DIRECTION eDirection = CYIFocus::FOCUS_FORWARD, CYIFocus::FOCUS_ROOT_RULE eFocusRootRule = CYIFocus::FOCUS_ROOT_DESCENDANTS_UPDATE_CONTEXT, const CYIAABB &previousFocusRect = CYIAABB(), const CYIFocusSearchOptions &options = CYIFocusSearchOptions()) override;

protected:
    virtual void FocusGainedInDescendants() override;

    virtual void FocusChangedInDescendants() override;

    virtual bool HandlesFocusInDescendants() const override;

    virtual CYISceneView *FindNextFocusInDescendants(const CYISceneView *pCurrentFocusView, CYIFocus::FOCUS_DIRECTION eDirection, CYIAABB &screenSpaceFocusRegion, const CYIFocusSearchOptions &options = CYIFocusSearchOptions()) const override;

private:
    void SaveFocusState();

    bool RestoreFocusState();

    std::shared_ptr<CYISceneNodeProxy> m_pLastNodeWithFocus;

    YI_DISALLOW_COPY_AND_ASSIGN(CYIFocusZoneView)

    YI_TYPE_BASES(CYIFocusZoneView, CYISceneView)
};

#endif // _FOCUS_ZONE_VIEW_H_