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px_CR_Object.h

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00001 /* AbiWord
00002  * Copyright (C) 1998 AbiSource, Inc.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License
00006  * as published by the Free Software Foundation; either version 2
00007  * of the License, or (at your option) any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
00017  * 02110-1301 USA.
00018  */
00019 
00020 
00021 #ifndef PX_CHANGERECORD_OBJECT_H
00022 #define PX_CHANGERECORD_OBJECT_H
00023 
00024 #include "ut_types.h"
00025 #include "px_ChangeRecord.h"
00026 
00027 class fd_Field;
00028 
00029 // PX_ChangeRecord_Object describes an insertObject or
00030 // deleteObject change made to the document.
00031 // This description should be sufficient to allow undo to
00032 // work and sufficient to allow the formatter to do a
00033 // partial format and screen update (if appropriate).
00034 // The change record must be free of pointers, since it
00035 // represents what was done to the document -- and not
00036 // how it was done (that is, not what was done to various
00037 // intermediate data structures).  this also lets it be
00038 // cached to disk (for autosave and maybe multi-session
00039 // undo).
00040 //
00041 
00042 
00043 class ABI_EXPORT PX_ChangeRecord_Object : public PX_ChangeRecord
00044 {
00045 public:
00046     PX_ChangeRecord_Object(PXType type,
00047                            PT_DocPosition position,
00048                            PT_AttrPropIndex indexAP,
00049                            UT_uint32 iXID,
00050                            PTObjectType ObjectType,
00051                            PT_BlockOffset blockOffset,
00052                            fd_Field * field,
00053                pf_Frag_Object* pOH);
00054     ~PX_ChangeRecord_Object();
00055 
00056     virtual PX_ChangeRecord * reverse(void) const;
00057 
00058     PTObjectType            getObjectType(void) const;
00059     PT_BlockOffset          getBlockOffset(void) const;
00060     fd_Field *              getField(void) const {return m_field;}
00061     pf_Frag_Object*                     getObjectHandle(void) const
00062       { return  m_OH;}
00063     void                    setObjectHandle(pf_Frag_Object * pfo) const
00064     { m_OH = pfo;}
00065     void                      AdjustBlockOffset(PT_BlockOffset iBlk) const
00066     { m_blockOffset = iBlk;}
00067 
00068 protected:
00069     PTObjectType            m_objectType;       /* our type (image, etc.) */
00070 mutable PT_BlockOffset          m_blockOffset; /* offset of span from beginning of paragraph */
00071     // this only serves as a unique identifier of a field
00072     // it should not be thought of as a valid pointer
00073     fd_Field *              m_field;
00074     mutable pf_Frag_Object*         m_OH;
00075 };
00076 
00077 #endif /* PX_CHANGERECORD_OBJECT_H */

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