/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/
#ifndef _ACCMAP_HXX
#define _ACCMAP_HXX

#include <cppuhelper/weakref.hxx>
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <rtl/ref.hxx>
#include <osl/mutex.hxx>
#include <svx/IAccessibleViewForwarder.hxx>
#include <svx/IAccessibleParent.hxx>
#include <tools/debug.hxx>
#include <tools/fract.hxx>

#include <vector>

class ViewShell;
class Rectangle;
class SwFrm;
class SwTxtFrm;
class SwPageFrm;
class SwAccessibleContext;
class SwAccessibleContextMap_Impl;
class SwAccessibleEventList_Impl;
class SwAccessibleEventMap_Impl;
class SwShapeList_Impl;
class SdrObject;
namespace accessibility {
    class AccessibleShape;
}
class SwAccessibleShapeMap_Impl;
struct SwAccessibleEvent_Impl;
class SwAccessibleSelectedParas_Impl;
class SwRect;
class MapMode;
class SwAccPreviewData;
struct PrevwPage;
class Window;

// real states for events
#define ACC_STATE_EDITABLE 0x01
#define ACC_STATE_OPAQUE 0x02

// pseudo states for events
#define ACC_STATE_TEXT_ATTRIBUTE_CHANGED 0x0200
#define ACC_STATE_TEXT_SELECTION_CHANGED 0x0100
#define ACC_STATE_CARET 0x80
#define ACC_STATE_RELATION_FROM 0x40
#define ACC_STATE_RELATION_TO 0x20

#define ACC_STATE_RELATION_MASK 0x60

#define ACC_STATE_MASK 0x1F

typedef sal_uInt16 tAccessibleStates;

class SwAccessibleMap : public accessibility::IAccessibleViewForwarder,
                        public accessibility::IAccessibleParent
{
    mutable ::osl::Mutex maMutex;
    ::osl::Mutex maEventMutex;
    SwAccessibleContextMap_Impl *mpFrmMap;
    SwAccessibleShapeMap_Impl *mpShapeMap;
    SwShapeList_Impl *mpShapes;
    SwAccessibleEventList_Impl *mpEvents;
    SwAccessibleEventMap_Impl *mpEventMap;
    // #i27301 data structure to keep information about
    // accessible paragraph, which have a selection.
    SwAccessibleSelectedParas_Impl* mpSelectedParas;
    ViewShell *mpVSh;
    /// for page preview: store preview data, VisArea, and mapping of
    /// preview-to-display coordinates
    SwAccPreviewData* mpPreview;

    ::com::sun::star::uno::WeakReference < ::com::sun::star::accessibility::XAccessible > mxCursorContext;

    sal_Int32 mnPara;
    sal_Int32 mnFootnote;
    sal_Int32 mnEndnote;


    sal_Bool mbShapeSelected;

    void FireEvent( const SwAccessibleEvent_Impl& rEvent );

    void AppendEvent( const SwAccessibleEvent_Impl& rEvent );

    void InvalidateCursorPosition(
        const ::com::sun::star::uno::Reference<
            ::com::sun::star::accessibility::XAccessible>& rAcc );
    void DoInvalidateShapeSelection();
    void DoInvalidateShapeFocus();
    void InvalidateShapeSelection();

    void _InvalidateRelationSet( const SwFrm* pFrm, sal_Bool bFrom );

    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible>
            _GetDocumentView( sal_Bool bPagePreview );

    /** method to build up a new data structure of the accessible pararaphs,
        which have a selection

        Important note: method has to used inside a mutual exclusive section

        @author OD
    */
    SwAccessibleSelectedParas_Impl* _BuildSelectedParas();

public:

    SwAccessibleMap( ViewShell *pSh );
    ~SwAccessibleMap();

    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible> GetDocumentView();

    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible> GetDocumentPreview(
                            const std::vector<PrevwPage*>& _rPrevwPages,
                            const Fraction&  _rScale,
                            const SwPageFrm* _pSelectedPageFrm,
                            const Size&      _rPrevwWinSize );

    ::rtl::Reference < SwAccessibleContext > GetContextImpl(
                                                 const SwFrm *pFrm,
                                                sal_Bool bCreate = sal_True );
    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible> GetContext(
                                                 const SwFrm *pFrm,
                                                sal_Bool bCreate = sal_True );

    ::rtl::Reference < ::accessibility::AccessibleShape > GetContextImpl(
                                        const SdrObject *pObj,
                                        SwAccessibleContext *pParentImpl,
                                        sal_Bool bCreate = sal_True );
    ::com::sun::star::uno::Reference<
        ::com::sun::star::accessibility::XAccessible> GetContext(
                                        const SdrObject *pObj,
                                        SwAccessibleContext *pParentImpl,
                                        sal_Bool bCreate = sal_True );

    inline ViewShell* GetShell() const
    {
        return mpVSh;
    }

    const SwRect& GetVisArea() const;

    /** get size of a dedicated preview page

        @author OD

        @param _nPrevwPageNum
        input parameter - physical page number of page visible in the page preview

        @return an object of class <Size>
    */
    Size GetPreViewPageSize( sal_uInt16 _nPrevwPageNum ) const;

    void RemoveContext( const SwFrm *pFrm );
    void RemoveContext( const SdrObject *pObj );

    // Dispose frame and its children if bRecursive is set
    void Dispose( const SwFrm* pFrm,
                  const SdrObject* pObj,
                  Window* pWindow,
                  sal_Bool bRecursive = sal_False );

    void InvalidatePosOrSize( const SwFrm* pFrm,
                              const SdrObject* pObj,
                              Window* pWindow,
                              const SwRect& rOldFrm );

    void InvalidateContent( const SwFrm *pFrm );

    void InvalidateAttr( const SwTxtFrm& rTxtFrm );

    void InvalidateCursorPosition( const SwFrm *pFrm );
    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 InvalidateStates( tAccessibleStates _nStates,
                           const SwFrm* _pFrm = 0 );

    void InvalidateRelationSet( const SwFrm* pMaster, const SwFrm* pFollow );

    /** invalidation CONTENT_FLOWS_FROM/_TO relation of a paragraph

        @author OD

        @param _rTxtFrm
        input parameter - reference to paragraph, whose CONTENT_FLOWS_FROM/_TO
        has to be invalidated.

        @param _bFrom
        input parameter - boolean indicating, if relation CONTENT_FLOWS_FROM
        (value <true>) or CONTENT_FLOWS_TO (value <false>) has to be invalidated.
    */
    void InvalidateParaFlowRelation( const SwTxtFrm& _rTxtFrm,
                                     const bool _bFrom );

    /** invalidation of text selection of a paragraph

        @author OD
    */
    void InvalidateParaTextSelection( const SwTxtFrm& _rTxtFrm );

    /** invalidation of text selection of all paragraphs

        @author OD
    */
    void InvalidateTextSelectionOfAllParas();

    sal_Int32 GetChildIndex( const SwFrm& rParentFrm,
                             Window& rChild ) const;

    // update preview data (and fire events if necessary)
    void UpdatePreview( const std::vector<PrevwPage*>& _rPrevwPages,
                        const Fraction&  _rScale,
                        const SwPageFrm* _pSelectedPageFrm,
                        const Size&      _rPrevwWinSize );

    void InvalidatePreViewSelection( sal_uInt16 nSelPage );
    sal_Bool IsPageSelected( const SwPageFrm *pPageFrm ) const;

    void FireEvents();


    // IAccessibleViewForwarder

    virtual sal_Bool IsValid() const;
    virtual Rectangle GetVisibleArea() const;
    virtual Point LogicToPixel (const Point& rPoint) const;
    virtual Size LogicToPixel (const Size& rSize) const;
    virtual Point PixelToLogic (const Point& rPoint) const;
    virtual Size PixelToLogic (const Size& rSize) const;

    // IAccessibleParent
    virtual sal_Bool ReplaceChild (
        ::accessibility::AccessibleShape* pCurrentChild,
        const ::com::sun::star::uno::Reference< ::com::sun::star::drawing::XShape >& _rxShape,
        const long _nIndex,
        const ::accessibility::AccessibleShapeTreeInfo& _rShapeTreeInfo
    )	throw (::com::sun::star::uno::RuntimeException);

    // additional Core/Pixel conversions for internal use; also works
    // for preview
    Point PixelToCore (const Point& rPoint) const;
    Rectangle CoreToPixel (const Rectangle& rRect) const;

private:
    /** get mapping mode for LogicToPixel and PixelToLogic conversions

        Replacement method <PreviewAdjust(..)> by new method <GetMapMode>.
        Method returns mapping mode of current output device and adjusts it,
        if the shell is in page/print preview.
        Necessary, because <PreviewAdjust(..)> changes mapping mode at current
        output device for mapping logic document positions to page preview window
        positions and vice versa and doesn't take care to recover its changes.

        @author OD

        @param _rPoint
        input parameter - constant reference to point to determine the mapping
        mode adjustments for page/print preview.

        @param _orMapMode
        output parameter - reference to the mapping mode, which is determined
        by the method
    */
    void GetMapMode( const Point& _rPoint,
                     MapMode&     _orMapMode ) const;
};
#endif

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
