accmap.hxx

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#ifndef INCLUDED_SW_INC_ACCMAP_HXX
#define INCLUDED_SW_INC_ACCMAP_HXX
 
#include <cppuhelper/weakref.hxx>
#include <rtl/ref.hxx>
#include <osl/mutex.hxx>
#include <svx/IAccessibleViewForwarder.hxx>
#include <svx/IAccessibleParent.hxx>
 
#include <svx/AccessibleControlShape.hxx>
#include <o3tl/typed_flags_set.hxx>
 
#include <vector>
#include <memory>
#include <o3tl/sorted_vector.hxx>
 
class SwAccessibleParagraph;
class SwViewShell;
class SwFrame;
class SwTextFrame;
class SwPageFrame;
class SwAccessibleContext;
class SwAccessibleContextMap_Impl;
class SwAccessibleEventList_Impl;
class SwAccessibleEventMap_Impl;
class SdrObject;
namespace accessibility { class AccessibleShape; }
class SwAccessibleShapeMap_Impl;
struct SwAccessibleEvent_Impl;
class SwAccessibleSelectedParas_Impl;
class SwRect;
class MapMode;
class SwAccPreviewData;
class SwFEShell;
class Fraction;
struct PreviewPage;
namespace vcl { class Window; }
namespace com::sun::star::accessibility { class XAccessible; }
 
// The shape list is filled if an accessible shape is destroyed. It
// simply keeps a reference to the accessible shape's XShape. These
// references are destroyed within the EndAction when firing events.
// There are two reason for this. First of all, a new accessible shape
// for the XShape might be created soon. It's then cheaper if the XShape
// still exists. The other reason are situations where an accessible shape
// is destroyed within an SwFrameFormat::SwClientNotify. In this case, destroying
// the XShape at the same time (indirectly by destroying the accessible
// shape) leads to an assert, because a client of the Modify is destroyed
// within a Modify call.
using SwShapeList_Impl = std::vector<css::uno::Reference<css::drawing::XShape>>;
 
enum class AccessibleStates
{
    NONE                   = 0x0000,
    // real states for events
    EDITABLE               = 0x0001,
    OPAQUE                 = 0x0002,
    // pseudo states for events
    TEXT_ATTRIBUTE_CHANGED = 0x0200,
    TEXT_SELECTION_CHANGED = 0x0100,
    CARET                  = 0x0080,
    RELATION_FROM          = 0x0040,
    RELATION_TO            = 0x0020,
};
namespace o3tl
{
    template<> struct typed_flags<AccessibleStates> : is_typed_flags<AccessibleStates, 0x3e3> {};
}
 
class SwAccessibleMap final : public ::accessibility::IAccessibleViewForwarder,
                        public ::accessibility::IAccessibleParent
                , public std::enable_shared_from_this<SwAccessibleMap>
{
    mutable ::osl::Mutex maMutex;
    ::osl::Mutex maEventMutex;
    std::unique_ptr<SwAccessibleContextMap_Impl> mpFrameMap;
    std::unique_ptr<SwAccessibleShapeMap_Impl> mpShapeMap;
    SwShapeList_Impl mvShapes;
    std::unique_ptr<SwAccessibleEventList_Impl> mpEvents;
    std::unique_ptr<SwAccessibleEventMap_Impl> mpEventMap;
 
    // Para Container for InvalidateCursorPosition
    o3tl::sorted_vector<SwAccessibleParagraph*> m_setParaAdd;
    o3tl::sorted_vector<SwAccessibleParagraph*> m_setParaRemove;
 
    // #i27301 data structure to keep information about
    // accessible paragraph, which have a selection.
    std::unique_ptr<SwAccessibleSelectedParas_Impl> mpSelectedParas;
    SwViewShell *mpVSh;
    std::unique_ptr<SwAccPreviewData> mpPreview;
 
    css::uno::WeakReference < css::accessibility::XAccessible > mxCursorContext;
 
    bool mbShapeSelected;
 
    void FireEvent( const SwAccessibleEvent_Impl& rEvent );
 
    void AppendEvent( const SwAccessibleEvent_Impl& rEvent );
 
    void InvalidateCursorPosition( const css::uno::Reference<css::accessibility::XAccessible>& rAcc );
    void DoInvalidateShapeSelection(bool bInvalidateFocusMode = false);
 
    void InvalidateShapeSelection();
 
    //mpSelectedFrameMap contains the old selected objects.
    std::unique_ptr<SwAccessibleContextMap_Impl> mpSelectedFrameMap;
 
    OUString maDocName;
 
    //InvalidateShapeInParaSelection() method is responsible for the updating the selected states of the objects.
    void InvalidateShapeInParaSelection();
 
    void InvalidateRelationSet_( const SwFrame* pFrame, bool bFrom );
 
    css::uno::Reference<css::accessibility::XAccessible>
            GetDocumentView_( bool bPagePreview );
 
    std::unique_ptr<SwAccessibleSelectedParas_Impl> BuildSelectedParas();
 
public:
 
    SwAccessibleMap( SwViewShell *pSh );
    virtual ~SwAccessibleMap() override;
 
    css::uno::Reference<css::accessibility::XAccessible> GetDocumentView();
 
    css::uno::Reference<css::accessibility::XAccessible> GetDocumentPreview(
                            const std::vector<std::unique_ptr<PreviewPage>>& _rPreviewPages,
                            const Fraction&  _rScale,
                            const SwPageFrame* _pSelectedPageFrame,
                            const Size&      _rPreviewWinSize );
 
    ::rtl::Reference < SwAccessibleContext > GetContextImpl(
                                                 const SwFrame *pFrame,
                                                bool bCreate = true );
    css::uno::Reference<css::accessibility::XAccessible> GetContext(
                                                 const SwFrame *pFrame,
                                                bool bCreate = true );
 
    ::rtl::Reference < ::accessibility::AccessibleShape > GetContextImpl(
                                        const SdrObject *pObj,
                                        SwAccessibleContext *pParentImpl,
                                        bool bCreate = true );
    css::uno::Reference<css::accessibility::XAccessible> GetContext(
                                        const SdrObject *pObj,
                                        SwAccessibleContext *pParentImpl,
                                        bool bCreate = true );
 
    SwViewShell* GetShell() const
    {
        return mpVSh;
    }
    static bool IsInSameLevel(const SdrObject* pObj, const SwFEShell* pFESh);
    void AddShapeContext(const SdrObject *pObj,
                             css::uno::Reference < css::accessibility::XAccessible > const & xAccShape);
 
    void AddGroupContext(const SdrObject *pParentObj,
                    css::uno::Reference < css::accessibility::XAccessible > const & xAccParent);
    void RemoveGroupContext(const SdrObject *pParentObj);
 
    const SwRect& GetVisArea() const;
 
    Size GetPreviewPageSize( sal_uInt16 _nPreviewPageNum ) const;
 
    void RemoveContext( const SwFrame *pFrame );
    void RemoveContext( const SdrObject *pObj );
 
    // Dispose frame and its children if bRecursive is set
    void A11yDispose( const SwFrame* pFrame,
                      const SdrObject* pObj,
                      vcl::Window* pWindow,
                      bool bRecursive = false,
                      bool bCanSkipInvisible = true );
 
    void InvalidatePosOrSize( const SwFrame* pFrame,
                              const SdrObject* pObj,
                              vcl::Window* pWindow,
                              const SwRect& rOldFrame );
 
    void InvalidateContent( const SwFrame *pFrame );
 
    void InvalidateAttr( const SwTextFrame& rTextFrame );
 
    void InvalidateCursorPosition( const SwFrame *pFrame );
    void InvalidateFocus();
    void SetCursorContext(
        const ::rtl::Reference < SwAccessibleContext >& rCursorContext );
 
    // Invalidate state of whole tree. If an action is open, this call
    // is processed when the last action ends.
    void InvalidateEditableStates( const SwFrame* _pFrame );
 
    void InvalidateRelationSet( const SwFrame* pMaster, const SwFrame* pFollow );
 
    void InvalidateParaFlowRelation( const SwTextFrame& _rTextFrame,
                                     const bool _bFrom );
 
    void InvalidateParaTextSelection( const SwTextFrame& _rTextFrame );
 
    void InvalidateTextSelectionOfAllParas();
 
    sal_Int32 GetChildIndex( const SwFrame& rParentFrame,
                             vcl::Window& rChild ) const;
 
    // update preview data (and fire events if necessary)
    void UpdatePreview( const std::vector<std::unique_ptr<PreviewPage>>& _rPreviewPages,
                        const Fraction&  _rScale,
                        const SwPageFrame* _pSelectedPageFrame,
                        const Size&      _rPreviewWinSize );
 
    void InvalidatePreviewSelection( sal_uInt16 nSelPage );
    bool IsPageSelected( const SwPageFrame *pPageFrame ) const;
 
    void FireEvents();
 
    const OUString& GetDocName() const { return maDocName; }
 
    // IAccessibleViewForwarder
 
    virtual tools::Rectangle GetVisibleArea() const override;
    virtual Point LogicToPixel (const Point& rPoint) const override;
    virtual Size LogicToPixel (const Size& rSize) const override;
 
    // IAccessibleParent
    virtual bool ReplaceChild (
        ::accessibility::AccessibleShape* pCurrentChild,
        const css::uno::Reference< css::drawing::XShape >& _rxShape,
        const tools::Long _nIndex,
        const ::accessibility::AccessibleShapeTreeInfo& _rShapeTreeInfo
    ) override;
    virtual ::accessibility::AccessibleControlShape* GetAccControlShapeFromModel
        (css::beans::XPropertySet* pSet) override;
    virtual css::uno::Reference< css::accessibility::XAccessible >   GetAccessibleCaption (
        const css::uno::Reference< css::drawing::XShape > & xShape) override;
 
    // additional Core/Pixel conversions for internal use; also works
    // for preview
    Point PixelToCore (const Point& rPoint) const;
    tools::Rectangle CoreToPixel (const SwRect& rRect) const;
 
    // is there a known accessibility impl cached for the frame
    bool Contains(const SwFrame *pFrame) const;
 
private:
    void GetMapMode( const Point& _rPoint,
                     MapMode&     _orMapMode ) const;
public:
    virtual bool IsDocumentSelAll() override;
};
#endif
 
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