Account for old versions of Pygments

[lyx.git] / src / Undo.h

diff --git a/src/Undo.h b/src/Undo.h
index 789de5f39f69209dd6bae6cf8e0c51e47b035d94..59f3ca44fc93a58975ee459ffc9440e5889a5ac1 100644 (file)
--- a/src/Undo.h
+++ b/src/Undo.h
@@ -47,6 +47,9 @@ enum UndoKind {
 
 class Undo
 {
+       /// noncopyable
+       Undo(Undo const &);
+       void operator=(Undo const &);
 public:
 
        Undo(Buffer &);
@@ -80,12 +83,19 @@ public:
         *  a single step. This means you can add a group whenever you are not sure.
         */
        void beginUndoGroup();
-
+       /// open a new group as above and specify a cursor to set as cur_before
+       /// of the group's undo elements.
+       /**
+        * This cursor takes precedence over what is passed to recordUndo.
+        * In the case of nested groups, only the first cur_before is
+        * taken into account. The cursor is reset at the end of the
+        * top-level group.
+        */
+       void beginUndoGroup(CursorData const & cur_before);
        /// end the current undo group.
        void endUndoGroup();
-
        /// end the current undo group and set UndoElement::cur_after if necessary.
-       void endUndoGroup(CursorData const &);
+       void endUndoGroup(CursorData const & cur_after);
 
        /// The general case: record undo information for an arbitrary range.
        /**
@@ -102,6 +112,9 @@ public:
        /// paragraph or cell containing the cursor.
        void recordUndo(CursorData const & cur, UndoKind kind = ATOMIC_UNDO);
 
+       /// prepare undo for the inset containing the cursor
+       void recordUndoInset(CursorData const & cur, Inset const * inset);
+
        /// Convenience: record undo for buffer parameters
        void recordUndoBufferParams(CursorData const & cur);
 
@@ -114,6 +127,34 @@ private:
 };
 
 
+/** Helper class to simplify the use of undo groups across several buffers.
+ *
+ *  The undo group is created when the object is instanciated; it is
+ *  then ended as the object goes out of scope or the buffer is reset
+ *  (see below)
+ */
+class UndoGroupHelper {
+public:
+       UndoGroupHelper(Buffer * buf) : buffer_(0)
+       {
+               resetBuffer(buf);
+       }
+
+       ~UndoGroupHelper()
+       {
+               resetBuffer(0);
+       }
+
+       /** Close the current undo group if necessary and create a new one
+        * for buffer \c buf.
+        */
+       void resetBuffer(Buffer * buf);
+
+private:
+       Buffer * buffer_;
+};
+
+
 
 } // namespace lyx