Differentiate shared and non-shared formula cells when registering.

For now this is just for a pure redirection, but later we'll use this
to do a different area listening registration for grouped formula cells.

Change-Id: I8e68bb53c3e96821175ae562ef36ec5e800c8688

1 files changed, 14 insertions, 0 deletions

diff --git a/sc/inc/sharedformula.hxx b/sc/inc/sharedformula.hxx
index b29843f8547a..e1799bf70e0b 100644
--- a/sc/inc/sharedformula.hxx
+++ b/sc/inc/sharedformula.hxx
@@ -17,6 +17,8 @@
 
 namespace sc {
 
+class StartListeningContext;
+
 class SharedFormulaUtil
 {
 public:
@@ -109,6 +111,18 @@ public:
      * @param rRows row positions at which to unshare formula cells.
      */
     static void unshareFormulaCells(CellStoreType& rCells, std::vector<SCROW>& rRows);
+
+    /**
+     * Have all formula cells belonging to a group start listening to their
+     * references.
+     *
+     * @param rCxt context object.
+     * @param ppSharedTop memory position of the pointer of the topmost
+     *                    formula cell instance in the cell storage.  The
+     *                    caller is responsible for ensuring that it is indeed
+     *                    the topmost cell of a shared formula group.
+     */
+    static void startListeningAsGroup( StartListeningContext& rCxt, ScFormulaCell** ppSharedTop );
 };
 
 }