2 * CDE - Common Desktop Environment
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23 /*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
24 /*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
25 /*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
26 /*%% (c) Copyright 1993, 1994 Novell, Inc. */
27 /*%% $XConsortium: CoEdTextChange.h /main/3 1995/10/23 09:43:46 rswiston $ */
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56 #ifndef CoEdTextChange_h
57 #define CoEdTextChange_h
62 #include "CoEdTextVersion.h"
64 class CoEdTextChange {
65 friend class CoEdTextChangeList;
66 friend class CoEdChangeHistory;
67 friend class CoEdChangeQueue;
71 CoEdTextChange( long start, long end, const char *text,
72 const CoEdTextVersion *appliesTo,
73 const CoEdSiteID *causer, int changeNum );
74 CoEdTextChange( const CoEdTextChange &change );
75 CoEdTextChange( Tt_message msg, CoEdStatus &status );
78 CoEdStatus broadcast( const char *path ) const;
79 int knowsOfNewerChangesThan(
80 const CoEdTextVersion &version ) const
81 { return _appliesTo->knowsOfNewerChangesThan(
83 int knowsOfNewerChangesThan(
84 const CoEdTextChange &change ) const
85 { return _appliesTo->knowsOfNewerChangesThan(
86 *change._appliesTo ); }
87 int knowsOf( const CoEdTextChange &change ) const
88 { return _appliesTo->knowsOf( *change._causer,
89 change._changeNum ); }
90 void interTranslate( CoEdTextChange &chng2Xlate );
91 void translateOver( const CoEdTextChange &chng2Hurdle );
92 long adjustPt( long pt, const CoEdSiteID &ptOwner,
93 int directionToLean ) const;
94 void print( FILE *f );
95 long charsAddedBy() const { return _charsAdded; }
96 long start() const { return _start; }
97 long end() const { return _end; }
98 const char *text() const { return _text; }
99 const CoEdSiteID &causer() const { return *_causer; }
100 int changeNum() const { return _changeNum; }
106 CoEdTextVersion *_appliesTo;
110 CoEdTextChange *_next;
111 CoEdTextChange *_prev;
114 class CoEdTextChangeList {
115 friend class CoEdChangeHistory;
116 friend class CoEdChangeQueue;
119 CoEdTextChangeList();
120 ~CoEdTextChangeList();
122 void push( CoEdTextChange *change );
123 void append( CoEdTextChange *change );
124 void insertBefore( CoEdTextChange *change1,
125 CoEdTextChange *change2 );
126 void insertAfter( CoEdTextChange *change2,
127 CoEdTextChange *change1 );
128 CoEdTextChange *remove( CoEdTextChange *change );
129 void print( FILE *f, char *indent = "" );
132 CoEdTextChange *_head;
133 CoEdTextChange *_tail;
137 #endif CoEdTextChange_h