4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
10 * Full author contact details are available in file CREDITS.
12 * Record changes in a paragraph.
18 #include "support/docstream.h"
19 #include "support/lyxtime.h"
29 /// the type of change
31 UNCHANGED, // no change
33 DELETED // deleted text
36 explicit Change(Type t, int a = 0, time_type ct = 0)
37 : type(t), author(a), changetime(ct) {}
46 bool operator==(Change const & l, Change const & r);
47 bool operator!=(Change const & l, Change const & r);
51 /// set the pos to the given change
52 void set(Change const & change, pos_type pos);
53 /// set the range (excluding end) to the given change
54 void set(Change const & change, pos_type start, pos_type end);
56 /// erase the entry at pos and adjust all range bounds past it
57 /// (assumes that a character was deleted at pos)
58 void erase(lyx::pos_type pos);
60 /// insert a new entry at pos and adjust all range bounds past it
61 /// (assumes that a character was inserted at pos)
62 void insert(Change const & change, lyx::pos_type pos);
66 /// return the change at the given pos
67 Change const lookup(pos_type pos) const;
69 /// return true if there is a change in the given range (excluding end)
70 bool isChanged(pos_type start, pos_type end) const;
74 /// output latex to mark a transition between two change types
75 /// returns length of text outputted
76 static int latexMarkChange(odocstream & os, Change::Type old,
77 Change::Type change, bool const & output);
79 /// output .lyx file format for transitions between changes
80 static void lyxMarkChange(std::ostream & os, int & column,
81 time_type curtime, Change const & old, Change const & change);
86 Range(pos_type s, pos_type e)
89 // does this range contain r ?
90 bool contains(Range const & r) const;
92 // does this range contain pos ?
93 bool contains(pos_type pos) const;
95 // do the ranges intersect ?
96 bool intersects(Range const & r) const;
99 pos_type end; // Caution: end is not in the range!
102 friend bool operator==(Range const & r1, Range const & r2);
103 friend bool operator!=(Range const & r1, Range const & r2);
107 ChangeRange(Change const & c, Range const & r)
108 : change(c), range(r) {}
114 /// merge equal changes with adjoining ranges
117 typedef std::vector<ChangeRange> ChangeTable;
119 /// table of changes, every row a change and range descriptor