fix mathed crash

[lyx.git] / src / undo.h

diff --git a/src/undo.h b/src/undo.h
index a45e97bff56493e78e23b73a3ab3903e14467a31..e5060add608eb7c532a5724ef65447eddcc9a0e6 100644 (file)
--- a/src/undo.h
+++ b/src/undo.h
@@ -19,9 +19,10 @@
 #include "ParagraphList_fwd.h"
 #include "support/types.h"
 
-class LyXText;
+class LCursor;
 class BufferView;
 
+
 /**
  * These are the elements put on the undo stack. Each object
  * contains complete paragraphs and sufficient information
@@ -29,61 +30,51 @@ class BufferView;
  */
 class Undo {
 public:
-       /**
-        * The undo kinds are used to combine consecutive undo recordings
-        * of the same kind.
-        */
+       /// This is used to combine consecutive undo recordings of the same kind.
        enum undo_kind {
                /**
                 * Insert something - these will combine to one big chunk
                 * when many inserts come after each other.
                 */
                INSERT,
-
                /**
                 * Delete something - these will combine to one big chunk
                 * when many deletes come after each other.
                 */
                DELETE,
-
                /// Atomic - each of these will have its own entry in the stack
                ATOMIC
        };
+
        /// constructor
        Undo(undo_kind kind, int text, int index,
                int first_par, int end_par, int cursor_par, int cursor_pos);
 
+public:
        /// which kind of operation are we recording for?
        undo_kind kind;
-
        /// hosting LyXText counted from buffer begin
        int text;
-
        /// cell in a tabular or similar
        int index;
-
        /// offset to the first paragraph in the paragraph list
        int first_par;
-
-       /// offset to the last paragraph from the end of parargraph list
+       /// offset to the last paragraph from the end of paragraph list
        int end_par;
-
        /// offset to the first paragraph in the paragraph list
        int cursor_par;
-
        /// the position of the cursor in the hosting paragraph
        int cursor_pos;
-
        /// the contents of the paragraphs saved
        ParagraphList pars;
 };
 
 
 /// this will undo the last action - returns false if no undo possible
-bool textUndo(BufferView *);
+bool textUndo(BufferView &);
 
 /// this will redo the last undo - returns false if no redo possible
-bool textRedo(BufferView *);
+bool textRedo(BufferView &);
 
 /// makes sure the next operation will be stored
 void finishUndo();
@@ -94,23 +85,26 @@ void freezeUndo();
 /// track undos again
 void unFreezeUndo();
 
+
 /**
- * Record undo information - call with the first paragraph that will be changed
- * and the last paragraph that will be changed. So we give an inclusive
- * range.
+ * Record undo information - call with the current cursor and the 'other
+ * end' of the range of changed  paragraphs.  So we give an inclusive range.
  * This is called before you make the changes to the paragraph, and it
  * will record the original information of the paragraphs in the undo stack.
  */
-void recordUndo(Undo::undo_kind kind,
-       LyXText const * text, lyx::paroffset_type first, lyx::paroffset_type last);
 
-/// convienience: prepare undo when change in a single paragraph
-void recordUndo(Undo::undo_kind kind,
-       LyXText const * text, lyx::paroffset_type par);
+/// the common case: prepare undo for an arbitrary range
+void recordUndo(LCursor & cur, Undo::undo_kind kind,
+       lyx::paroffset_type from, lyx::paroffset_type to);
+
+/// convienience: prepare undo for the range between 'from' and cursor.
+void recordUndo(LCursor & cur, Undo::undo_kind kind, lyx::paroffset_type from);
+
+/// convienience: prepare undo for the single paragraph containing the cursor
+void recordUndo(LCursor & cur, Undo::undo_kind kind);
 
-/// convienience: prepare undo for the paragraph that contains the cursor
-void recordUndo(BufferView *, Undo::undo_kind kind);
-void recordUndo(BufferView &, Undo::undo_kind kind);
+/// convienience: prepare undo for the single paragraph containing the cursor
+void recordUndoFullDocument(LCursor & cur);
 
 /// are we avoiding tracking undos currently?
 extern bool undo_frozen;