X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FUndo.h;h=c2b9b5d074b4e6e8fbef33e40e5aac73e74df3b3;hb=dab71087cf2954b77d3d2c0e67b868f9be82fba9;hp=f91b02fe8fd7c0d13970bc4c6c9658b762265101;hpb=574931dcdb04f0b3be09dc7a2305611c5e88ed78;p=lyx.git

diff --git a/src/Undo.h b/src/Undo.h
index f91b02fe8f..c2b9b5d074 100644
--- a/src/Undo.h
+++ b/src/Undo.h
@@ -23,7 +23,7 @@ namespace lyx {
 
 class Buffer;
 class BufferParams;
-class DocIterator;
+class CursorData;
 class Inset;
 class MathData;
 class ParagraphList;
@@ -47,17 +47,23 @@ enum UndoKind {
 
 class Undo
 {
+	/// noncopyable
+	Undo(Undo const &);
+	void operator=(Undo const &);
 public:
 
 	Undo(Buffer &);
 
 	~Undo();
 
+	/// Clear out all undo/redo contents.
+	void clear();
+
 	/// this will undo the last action - returns false if no undo possible
-	bool textUndo(DocIterator &);
+	bool undoAction(CursorData &);
 
 	/// this will redo the last undo - returns false if no redo possible
-	bool textRedo(DocIterator &);
+	bool redoAction(CursorData &);
 
 	/// End a sequence of INSERT_UNDO or DELETE_UNDO type of undo
 	/// operations (grouping of consecutive characters insertion/deletion).
@@ -77,9 +83,23 @@ 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 & cur_after);
+	/// end abruptly the current group and create a new one wih the same nesting level
+	void splitUndoGroup(CursorData const & cur);
+	/// return true if an undo group is open and contains at least one element
+	bool activeUndoGroup() const;
 
 	/// The general case: record undo information for an arbitrary range.
 	/**
@@ -88,26 +108,22 @@ 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(DocIterator const & cur, UndoKind kind,
-		pit_type from, pit_type to);
-
-	/// Convenience: record undo information for the range between
-	/// 'from' and cursor.
-	void recordUndo(DocIterator 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(DocIterator const & cur, UndoKind kind = ATOMIC_UNDO);
+	void recordUndo(CursorData const & cur, UndoKind kind = ATOMIC_UNDO);
 
-	/// Convenience: record undo information for the inset
-	/// containing the cursor.
-	void recordUndoInset(DocIterator 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);
 
 	/// Convenience: prepare undo for the whole buffer
-	void recordUndoFullDocument(DocIterator const & cur);
+	void recordUndoFullBuffer(CursorData const & cur);
 
 private:
 	struct Private;
@@ -115,6 +131,29 @@ 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 = 0);
+
+	~UndoGroupHelper();
+
+	/** Close the current undo group if necessary and create a new one
+	 * for buffer \c buf.
+	 */
+	void resetBuffer(Buffer * buf);
+
+private:
+	class Impl;
+	Impl * const d;
+};
+
+
 
 } // namespace lyx