class Buffer;
class BufferParams;
-class DocIterator;
+class CursorData;
class Inset;
class MathData;
class ParagraphList;
class Undo
{
+ /// noncopyable
+ Undo(Undo const &);
+ void operator=(Undo const &);
public:
Undo(Buffer &);
void clear();
/// this will undo the last action - returns false if no undo possible
- bool textUndo(DocIterator &);
+ bool textUndo(CursorData &);
/// this will redo the last undo - returns false if no redo possible
- bool textRedo(DocIterator &);
+ bool textRedo(CursorData &);
/// End a sequence of INSERT_UNDO or DELETE_UNDO type of undo
/// operations (grouping of consecutive characters insertion/deletion).
* 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);
/// The general case: record undo information for an arbitrary range.
/**
* 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;
};
+/** 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