X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fundo.h;h=e5060add608eb7c532a5724ef65447eddcc9a0e6;hb=67f9c9fdae42211aa3ff8d0c6f62485bd721d8eb;hp=08cf5b98618bee85c1f849433df52d46620b5134;hpb=b79331e005662776a3339a5d9e0209feb2194d18;p=lyx.git

diff --git a/src/undo.h b/src/undo.h
index 08cf5b9861..e5060add60 100644
--- a/src/undo.h
+++ b/src/undo.h
@@ -6,7 +6,9 @@
  *
  * \author Asger Alstrup
  * \author Lars Gullik Bjønnes
+ * \author John Levon
  * \author André Pönitz
+ * \author Jürgen Vigna
  *
  * Full author contact details are available in file CREDITS.
  */
@@ -15,73 +17,96 @@
 #define UNDO_H
 
 #include "ParagraphList_fwd.h"
+#include "support/types.h"
+
+class LCursor;
+class BufferView;
+
 
 /**
  * These are the elements put on the undo stack. Each object
  * contains complete paragraphs and sufficient information
- * to restore the state. The work is done in undo_funcs.C
+ * to restore the state.
  */
 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
 	};
-	///
-	Undo(undo_kind kind, int inset_id,
-	     int plist,
-	     int first, int last,
-	     int cursor, int cursor_pos,
-	     ParagraphList const & par_arg);
-
-	/// Which kind of operation are we recording for?
+
+	/// 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 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;
+};
 
-	/// to what paragraph list do we belong?
-	int plist;
 
-	/**
-	 * ID of hosting inset if the cursor is in one.
-	 * if -1, then the cursor is not in an inset.
-	 * if >= 0, then the cursor is in inset with given id.
-	 */
-	int inset_id;
+/// this will undo the last action - returns false if no undo possible
+bool textUndo(BufferView &);
 
-	/// Offset to the first paragraph in the main document paragraph list
-	int first_par_offset;
+/// this will redo the last undo - returns false if no redo possible
+bool textRedo(BufferView &);
 
-	/// Offset to the last paragraph from the end of the main par. list
-	int last_par_offset;
+/// makes sure the next operation will be stored
+void finishUndo();
 
-	/**
-	 * Offset from the start of the main document paragraph list,
-	 * except if inside an inset, in which case it's the offset
-	 * inside the hosting inset.
-	 */
-	int cursor_par_offset;
+/// whilst undo is frozen, all actions do not get added to the undo stack
+void freezeUndo();
 
-	/// The position of the cursor in the hosting paragraph
-	int cursor_pos;
+/// track undos again
+void unFreezeUndo();
 
-	/// The contents of the paragraphs saved
-	ParagraphList pars;
-};
 
+/**
+ * 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.
+ */
+
+/// 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 single paragraph containing the cursor
+void recordUndoFullDocument(LCursor & cur);
+
+/// are we avoiding tracking undos currently?
+extern bool undo_frozen;
 
-#endif
+#endif // UNDO_FUNCS_H