Collect all empty broadcasters and remove them in one go later.

This is to avoid repeated calls to set_empty() on the broadcaster array
which causes array reallocation on each call. Instead, we can store the
segments of broadcasters to be deleted later, and call set_empty() on
those segments to reduce the number of calls to set_empty().

The meat of this is not implemented yet, as EndListeningContext is still
empty.

Change-Id: I914bc2881acee3902c4fec0f6c21aaf4d2489df8

6 files changed, 50 insertions, 0 deletions

diff --git a/sc/inc/column.hxx b/sc/inc/column.hxx
index 1fe289099577..88950318af23 100644
--- a/sc/inc/column.hxx
+++ b/sc/inc/column.hxx
@@ -48,6 +48,7 @@ namespace editeng { class SvxBorderLine; }
 
 namespace sc {
     struct FormulaGroupContext;
+    class EndListeningContext;
 }
 
 class Fraction;
@@ -439,6 +440,7 @@ public:
 
     void        StartListening( SvtListener& rLst, SCROW nRow );
     void        EndListening( SvtListener& rLst, SCROW nRow );
+    void EndListening( sc::EndListeningContext& rCxt, SCROW nRow, SvtListener& rListener );
     void        MoveListeners( SvtBroadcaster& rSource, SCROW nDestRow );
     void        StartAllListeners();
     void        StartNeededListeners(); // only for cells where NeedsListening()==true
diff --git a/sc/inc/document.hxx b/sc/inc/document.hxx
index 454cca8c1e01..eeec34935a81 100644
--- a/sc/inc/document.hxx
+++ b/sc/inc/document.hxx
@@ -49,6 +49,7 @@
 namespace editeng { class SvxBorderLine; }
 namespace sc {
     struct FormulaGroupContext;
+    class EndListeningContext;
 }
 class SvxFontItem;
 
@@ -1754,6 +1755,8 @@ public:
     void                EndListeningCell( const ScAddress& rAddress,
                                             SvtListener* pListener );
 
+    void EndListeningCell( sc::EndListeningContext& rCxt, const ScAddress& rPos, SvtListener& rListener );
+
     void EndListeningFormulaCells( std::vector<ScFormulaCell*>& rCells );
 
     void                PutInFormulaTree( ScFormulaCell* pCell );
diff --git a/sc/inc/formulacell.hxx b/sc/inc/formulacell.hxx
index 2d0d04cc7de8..e081353632de 100644
--- a/sc/inc/formulacell.hxx
+++ b/sc/inc/formulacell.hxx
@@ -28,6 +28,12 @@
 
 #include <set>
 
+namespace sc {
+
+class EndListeningContext;
+
+}
+
 class ScTokenArray;
 struct ScSimilarFormulaDelta;
 
@@ -309,6 +315,7 @@ public:
     void StartListeningTo( ScDocument* pDoc );
     void EndListeningTo(
         ScDocument* pDoc, ScTokenArray* pArr = NULL, ScAddress aPos = ScAddress() );
+    void EndListeningTo( sc::EndListeningContext& rCxt );
 };
 
 #endif
diff --git a/sc/inc/listenercontext.hxx b/sc/inc/listenercontext.hxx
new file mode 100644
index 000000000000..584671342444
--- /dev/null
+++ b/sc/inc/listenercontext.hxx
@@ -0,0 +1,34 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef SC_LISTENERCONTEXT_HXX
+#define SC_LISTENERCONTEXT_HXX
+
+#include "address.hxx"
+
+class ScDocument;
+
+namespace sc {
+
+class EndListeningContext
+{
+    ScDocument& mrDoc;
+public:
+    EndListeningContext(ScDocument& rDoc);
+    ScDocument& getDoc();
+
+    void addEmptyBroadcasterPosition(SCCOL nCol, SCROW nRow, SCTAB nTab);
+    void purgeEmptyBroadcasters();
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/inc/refdata.hxx b/sc/inc/refdata.hxx
index a19f1df5e51b..6d6fe79bdfb0 100644
--- a/sc/inc/refdata.hxx
+++ b/sc/inc/refdata.hxx
@@ -91,6 +91,8 @@ struct SC_DLLPUBLIC ScSingleRefData        // Single reference (one address) int
     /// In external references nTab is -1
     inline  bool ValidExternal() const;
 
+    ScAddress toAbs( const ScAddress& rPos ) const;
+
             void SmartRelAbs( const ScAddress& rPos );
             void CalcRelFromAbs( const ScAddress& rPos );
             void CalcAbsIfRel( const ScAddress& rPos );
diff --git a/sc/inc/table.hxx b/sc/inc/table.hxx
index c58122898e0f..f805cf43f294 100644
--- a/sc/inc/table.hxx
+++ b/sc/inc/table.hxx
@@ -49,6 +49,7 @@ namespace com { namespace sun { namespace star {
 
 namespace sc {
     struct FormulaGroupContext;
+    class EndListeningContext;
 }
 
 class SfxItemSet;
@@ -932,6 +933,7 @@ private:
 
     void        StartListening( const ScAddress& rAddress, SvtListener* pListener );
     void        EndListening( const ScAddress& rAddress, SvtListener* pListener );
+    void EndListening( sc::EndListeningContext& rCxt, SCCOL nCol, SCROW nRow, SvtListener& rListener );
     void        StartAllListeners();
     void        StartNeededListeners(); // only for cells where NeedsListening()==TRUE
     void        SetRelNameDirty();