X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FUndo.h;h=59f3ca44fc93a58975ee459ffc9440e5889a5ac1;hb=f7768c994dc6aa6c79c32a8eee77eaa41662f9a4;hp=300ef6bbbb0cca0c5d9f07579a524c47e625e2ae;hpb=7021f4c3421afc74ca0c52c038743dad4a222aa9;p=lyx.git

diff --git a/src/Undo.h b/src/Undo.h
index 300ef6bbbb..59f3ca44fc 100644
--- 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.
 	/**
@@ -94,23 +104,16 @@ public:
 	 * 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.
+	 * Kind of undo is always ATOMIC_UNDO.
 	 */
-	void recordUndo(CursorData const & cur, UndoKind kind,
-		pit_type from, pit_type to);
-
-	/// Convenience: record undo information for the range between
-	/// 'from' and cursor.
-	void recordUndo(CursorData const & cur, UndoKind kind, pit_type from);
+	void recordUndo(CursorData const & cur, pit_type from, pit_type to);
 
 	/// Convenience: record undo information for the single
 	/// paragraph or cell containing the cursor.
 	void recordUndo(CursorData const & cur, UndoKind kind = ATOMIC_UNDO);
 
-	/// Convenience: record undo information for the inset
-	/// containing the cursor.
-	void recordUndoInset(CursorData const & cur,
-			     UndoKind kind = ATOMIC_UNDO,
-			     Inset const * inset = 0);
+	/// 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);
@@ -124,6 +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