X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fundo.h;h=a45e97bff56493e78e23b73a3ab3903e14467a31;hb=69bee02a8901793b34ac5ca6d07e93910cef4005;hp=415377cf3309cd05496354c98bad323ddc688b12;hpb=ffdb0baea3cfed37790f3769ae74081183d439cc;p=lyx.git

diff --git a/src/undo.h b/src/undo.h
index 415377cf33..a45e97bff5 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.
  */
@@ -15,11 +17,15 @@
 #define UNDO_H
 
 #include "ParagraphList_fwd.h"
+#include "support/types.h"
+
+class LyXText;
+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:
@@ -43,41 +49,70 @@ public:
 		/// Atomic - each of these will have its own entry in the stack
 		ATOMIC
 	};
-	///
-	Undo(undo_kind kind, int inset_id,
-	     int first, int last,
-	     int cursor, int cursor_pos,
-	     ParagraphList const & par_arg);
+	/// constructor
+	Undo(undo_kind kind, int text, int index,
+		int first_par, int end_par, int cursor_par, int cursor_pos);
 
-	/// Which kind of operation are we recording for?
+	/// which kind of operation are we recording for?
 	undo_kind kind;
 
-	/**
-	 * 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;
+	/// hosting LyXText counted from buffer begin
+	int text;
 
-	/// Offset to the first paragraph in the main document paragraph list
-	int first_par_offset;
+	/// cell in a tabular or similar
+	int index;
 
-	/// Offset to the last paragraph from the end of the main par. list
-	int last_par_offset;
+	/// offset to the first paragraph in the paragraph list
+	int first_par;
 
-	/**
-	 * 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;
+	/// offset to the last paragraph from the end of parargraph list
+	int end_par;
 
-	/// The position of the cursor in the hosting paragraph
+	/// 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
+	/// the contents of the paragraphs saved
 	ParagraphList pars;
 };
 
 
-#endif
+/// this will undo the last action - returns false if no undo possible
+bool textUndo(BufferView *);
+
+/// this will redo the last undo - returns false if no redo possible
+bool textRedo(BufferView *);
+
+/// makes sure the next operation will be stored
+void finishUndo();
+
+/// whilst undo is frozen, all actions do not get added to the undo stack
+void freezeUndo();
+
+/// track undos again
+void unFreezeUndo();
+
+/**
+ * Record undo information - call with the first paragraph that will be changed
+ * and the last paragraph that will be changed. 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.
+ */
+void recordUndo(Undo::undo_kind kind,
+	LyXText const * text, lyx::paroffset_type first, lyx::paroffset_type last);
+
+/// convienience: prepare undo when change in a single paragraph
+void recordUndo(Undo::undo_kind kind,
+	LyXText const * text, lyx::paroffset_type par);
+
+/// convienience: prepare undo for the paragraph that contains the cursor
+void recordUndo(BufferView *, Undo::undo_kind kind);
+void recordUndo(BufferView &, Undo::undo_kind kind);
+
+/// are we avoiding tracking undos currently?
+extern bool undo_frozen;
+
+#endif // UNDO_FUNCS_H