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px_CR_Glob.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_GLOB_H
00022 #define PX_CHANGERECORD_GLOB_H
00023 
00024 #include "ut_types.h"
00025 #include "px_ChangeRecord.h"
00026 
00027 // PX_ChangeRecord_Glob describes an insertSpan or
00028 // deleteSpan change made to the document.
00029 // This description should be sufficient to allow undo to
00030 // work and sufficient to allow the formatter to do a
00031 // partial format and screen update (if appropriate).
00032 // The change record must be free of pointers, since it
00033 // represents what was done to the document -- and not
00034 // how it was done (that is, not what was done to various
00035 // intermediate data structures).  this also lets it be
00036 // cached to disk (for autosave and maybe multi-session
00037 // undo).
00038 //
00039 // m_position contains the absolute document position of
00040 // the text span at the time the change was made.
00041 // m_bufIndex,m_length describe the actual contents
00042 // of the text span.
00043 
00044 
00045 class ABI_EXPORT PX_ChangeRecord_Glob : public PX_ChangeRecord
00046 {
00047 public:
00048     typedef enum _PXFlags { PXF_Null=               0x00,
00049                             PXF_MultiStepStart=     0x01, /* display-atomic */
00050                             PXF_MultiStepEnd=       0x02,
00051                             PXF_UserAtomicStart=    0x04, /* user-level-atomic */
00052                             PXF_UserAtomicEnd=      0x08 } PXFlags;
00053 
00054     PX_ChangeRecord_Glob(PXType type,
00055                          UT_Byte flags);
00056     ~PX_ChangeRecord_Glob();
00057 
00058     virtual PX_ChangeRecord * reverse(void) const;
00059 
00060     UT_Byte                 getFlags(void) const;
00061     UT_Byte                 getRevFlags(void) const;
00062 
00063 #ifdef PT_TEST
00064     virtual void            __dump(FILE * fp) const;
00065 #endif
00066 
00067 protected:
00068     UT_Byte                 m_flags;            /* see PXFlags above */
00069 };
00070 
00071 #endif /* PX_CHANGERECORD_GLOB_H */

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