1 files changed, 192 insertions, 0 deletions
diff --git a/sc/source/ui/undo/areasave.cxx b/sc/source/ui/undo/areasave.cxx
new file mode 100644
index 000000000..f675c1abc
--- /dev/null
+++ b/sc/source/ui/undo/areasave.cxx
@@ -0,0 +1,192 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sfx2/linkmgr.hxx>
+
+#include <areasave.hxx>
+#include <arealink.hxx>
+#include <document.hxx>
+#include <documentlinkmgr.hxx>
+
+ScAreaLinkSaver::ScAreaLinkSaver( const ScAreaLink& rSource ) :
+    aFileName   ( rSource.GetFile() ),
+    aFilterName ( rSource.GetFilter() ),
+    aOptions    ( rSource.GetOptions() ),
+    aSourceArea ( rSource.GetSource() ),
+    aDestArea   ( rSource.GetDestArea() ),
+    nRefreshDelaySeconds ( rSource.GetRefreshDelaySeconds() )       // seconds
+{
+}
+
+bool ScAreaLinkSaver::IsEqualSource( const ScAreaLink& rCompare ) const
+{
+    return ( aFileName == rCompare.GetFile() &&
+             aFilterName == rCompare.GetFilter() &&
+             aOptions == rCompare.GetOptions() &&
+             aSourceArea == rCompare.GetSource() &&
+             nRefreshDelaySeconds == rCompare.GetRefreshDelaySeconds() );
+}
+
+bool ScAreaLinkSaver::IsEqual( const ScAreaLink& rCompare ) const
+{
+    return ( IsEqualSource( rCompare ) &&
+             aDestArea == rCompare.GetDestArea() );
+}
+
+void ScAreaLinkSaver::WriteToLink( ScAreaLink& rLink ) const
+{
+    rLink.SetDestArea( aDestArea );
+}
+
+void ScAreaLinkSaver::InsertNewLink( ScDocument* pDoc )
+{
+    // (see ScUndoRemoveAreaLink::Undo)
+
+    sfx2::LinkManager* pLinkManager = pDoc->GetLinkManager();
+    SfxObjectShell* pObjSh = pDoc->GetDocumentShell();
+
+    if ( pLinkManager && pObjSh )
+    {
+        ScAreaLink* pLink = new ScAreaLink( pObjSh, aFileName, aFilterName, aOptions,
+                                            aSourceArea, aDestArea.aStart, nRefreshDelaySeconds );
+        pLink->SetInCreate( true );
+        pLink->SetDestArea( aDestArea );
+        OUString aTmp1(aFilterName), aTmp2(aSourceArea);
+        pLinkManager->InsertFileLink( *pLink, sfx2::SvBaseLinkObjectType::ClientFile, aFileName, &aTmp1, &aTmp2 );
+        pLink->Update();
+        pLink->SetInCreate( false );
+    }
+}
+
+ScAreaLinkSaveCollection::ScAreaLinkSaveCollection() {}
+
+ScAreaLinkSaveCollection::~ScAreaLinkSaveCollection() {}
+
+bool ScAreaLinkSaveCollection::IsEqual( const ScDocument* pDoc ) const
+{
+    // IsEqual can be checked in sequence.
+    // Neither ref-update nor removing links will change the order.
+
+    const sfx2::LinkManager* pLinkManager = pDoc->GetLinkManager();
+    if (pLinkManager)
+    {
+        size_t nPos = 0;
+        const ::sfx2::SvBaseLinks& rLinks = pLinkManager->GetLinks();
+        sal_uInt16 nLinkCount = rLinks.size();
+        for (sal_uInt16 i=0; i<nLinkCount; i++)
+        {
+            ::sfx2::SvBaseLink* pBase = rLinks[i].get();
+            if (auto pAreaLink = dynamic_cast<ScAreaLink*>( pBase))
+            {
+                if ( nPos >= size() || !(*this)[nPos].IsEqual( *pAreaLink ) )
+                    return false;
+
+                ++nPos;
+            }
+        }
+        if ( nPos < size() )
+            return false;           // fewer links in the document than in the save collection
+    }
+
+    return true;
+}
+
+static ScAreaLink* lcl_FindLink( const ::sfx2::SvBaseLinks& rLinks, const ScAreaLinkSaver& rSaver )
+{
+    sal_uInt16 nLinkCount = rLinks.size();
+    for (sal_uInt16 i=0; i<nLinkCount; i++)
+    {
+        ::sfx2::SvBaseLink* pBase = rLinks[i].get();
+        if ( auto pAreaLink = dynamic_cast<ScAreaLink*>( pBase) )
+            if ( rSaver.IsEqualSource( *pAreaLink ) )
+                return pAreaLink;     // found
+    }
+    return nullptr;    // not found
+}
+
+void ScAreaLinkSaveCollection::Restore( ScDocument* pDoc )
+{
+    // The save collection may contain additional entries that are not in the document.
+    // They must be inserted again.
+    // Entries from the save collection must be searched via source data, as the order
+    // of links changes if deleted entries are re-added to the link manager (always at the end).
+
+    sfx2::LinkManager* pLinkManager = pDoc->GetDocLinkManager().getLinkManager(false);
+    if (!pLinkManager)
+        return;
+
+    const ::sfx2::SvBaseLinks& rLinks = pLinkManager->GetLinks();
+    size_t nSaveCount = size();
+    for (size_t nPos=0; nPos<nSaveCount; ++nPos)
+    {
+        ScAreaLinkSaver& rSaver = (*this)[nPos];
+        ScAreaLink* pLink = lcl_FindLink( rLinks, rSaver );
+        if ( pLink )
+            rSaver.WriteToLink( *pLink );          // restore output position
+        else
+            rSaver.InsertNewLink( pDoc );          // re-insert deleted link
+    }
+}
+
+std::unique_ptr<ScAreaLinkSaveCollection> ScAreaLinkSaveCollection::CreateFromDoc( const ScDocument* pDoc )
+{
+    std::unique_ptr<ScAreaLinkSaveCollection> pColl;
+
+    sfx2::LinkManager* pLinkManager = const_cast<ScDocument*>(pDoc)->GetLinkManager();
+    if (pLinkManager)
+    {
+        const ::sfx2::SvBaseLinks& rLinks = pLinkManager->GetLinks();
+        sal_uInt16 nLinkCount = rLinks.size();
+        for (sal_uInt16 i=0; i<nLinkCount; i++)
+        {
+            ::sfx2::SvBaseLink* pBase = rLinks[i].get();
+            if (auto pAreaLink = dynamic_cast<ScAreaLink*>( pBase))
+            {
+                if (!pColl)
+                    pColl.reset(new ScAreaLinkSaveCollection);
+
+                pColl->push_back( ScAreaLinkSaver( *pAreaLink ) );
+            }
+        }
+    }
+
+    return pColl;
+}
+
+ScAreaLinkSaver& ScAreaLinkSaveCollection::operator [](size_t nIndex)
+{
+    return maData[nIndex];
+}
+
+const ScAreaLinkSaver& ScAreaLinkSaveCollection::operator [](size_t nIndex) const
+{
+    return maData[nIndex];
+}
+
+size_t ScAreaLinkSaveCollection::size() const
+{
+    return maData.size();
+}
+
+void ScAreaLinkSaveCollection::push_back(const ScAreaLinkSaver& p)
+{
+    maData.push_back(p);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */