loplugin:useuniqueptr in SwHTMLPosFlyFrames

and add a new method erase_extract to o3tl::sorted_vector, otherwise
there is no decent way to extract an element from such a vector without
freeing it.

Change-Id: I769782c04a54a2d7433e8349c99134f997a54689
Reviewed-on: https://gerrit.libreoffice.org/61345
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

include/o3tl/sorted_vector.hxx

@@ -97,6 +97,17 @@ public:
                        m_vector.begin() + (last - m_vector.begin()));
     }
 
+    /**
+     * make erase return the removed element, otherwise there is no useful way of extracting a std::unique_ptr
+     * from this.
+     */
+    Value erase_extract( size_t index )
+    {
+        Value val = std::move(m_vector[index]);
+        m_vector.erase(m_vector.begin() + index);
+        return val;
+    }
+
     void clear()
     {
         m_vector.clear();

sw/source/filter/html/htmlfly.hxx

@@ -122,8 +122,8 @@ public:
 };
 
 class SwHTMLPosFlyFrames
-    : public o3tl::sorted_vector<SwHTMLPosFlyFrame*,
-                o3tl::less_ptr_to<SwHTMLPosFlyFrame>,
+    : public o3tl::sorted_vector<std::unique_ptr<SwHTMLPosFlyFrame>,
+                o3tl::less_uniqueptr_to<SwHTMLPosFlyFrame>,
                 o3tl::find_partialorder_ptrequals>
 {};
 

sw/source/filter/html/htmlflywriter.cxx

@@ -249,7 +249,7 @@ sal_uInt16 SwHTMLWriter::GuessFrameType( const SwFrameFormat& rFrameFormat,
                     bEmpty = true;
                     if( m_pHTMLPosFlyFrames )
                     {
-                        for( auto pHTMLPosFlyFrame : *m_pHTMLPosFlyFrames )
+                        for( auto & pHTMLPosFlyFrame : *m_pHTMLPosFlyFrames )
                         {
                             sal_uLong nIdx = pHTMLPosFlyFrame->GetNdIndex().GetIndex();
                             bEmpty = (nIdx != nStt) && (nIdx != nStt-1);
@@ -348,8 +348,7 @@ void SwHTMLWriter::CollectFlyFrames()
         if( !m_pHTMLPosFlyFrames )
             m_pHTMLPosFlyFrames.reset(new SwHTMLPosFlyFrames);
 
-        SwHTMLPosFlyFrame *pNew = new SwHTMLPosFlyFrame(**aIter, pSdrObj, nMode);
-        m_pHTMLPosFlyFrames->insert( pNew );
+        m_pHTMLPosFlyFrames->insert( o3tl::make_unique<SwHTMLPosFlyFrame>(**aIter, pSdrObj, nMode) );
     }
 }
 
@@ -374,7 +373,7 @@ bool SwHTMLWriter::OutFlyFrame( sal_uLong nNdIdx, sal_Int32 nContentIdx, HtmlPos
         for( ; !bRestart && i < m_pHTMLPosFlyFrames->size() &&
             (*m_pHTMLPosFlyFrames)[i]->GetNdIndex().GetIndex() == nNdIdx; i++ )
         {
-            SwHTMLPosFlyFrame *pPosFly = (*m_pHTMLPosFlyFrames)[i];
+            SwHTMLPosFlyFrame *pPosFly = (*m_pHTMLPosFlyFrames)[i].get();
             if( ( HtmlPosition::Any == nPos ||
                   pPosFly->GetOutPos() == nPos ) &&
                 pPosFly->GetContentIndex() == nContentIdx )
@@ -382,7 +381,7 @@ bool SwHTMLWriter::OutFlyFrame( sal_uLong nNdIdx, sal_Int32 nContentIdx, HtmlPos
                 // It is important to remove it first, because additional
                 // elements or the whole array could be deleted on
                 // deeper recursion levels.
-                m_pHTMLPosFlyFrames->erase(i);
+                std::unique_ptr<SwHTMLPosFlyFrame> flyHolder = m_pHTMLPosFlyFrames->erase_extract(i);
                 i--;
                 if( m_pHTMLPosFlyFrames->empty() )
                 {
@@ -408,7 +407,6 @@ bool SwHTMLWriter::OutFlyFrame( sal_uLong nNdIdx, sal_Int32 nContentIdx, HtmlPos
                     break;
                 default: break;
                 }
-                delete pPosFly;
             }
             else
             {

sw/source/filter/html/htmlforw.cxx

@@ -1332,7 +1332,7 @@ void SwHTMLWriter::GetControls()
         // collect the paragraph-bound controls
         for( size_t i=0; i<m_pHTMLPosFlyFrames->size(); i++ )
         {
-            const SwHTMLPosFlyFrame* pPosFlyFrame = (*m_pHTMLPosFlyFrames)[ i ];
+            const SwHTMLPosFlyFrame* pPosFlyFrame = (*m_pHTMLPosFlyFrames)[ i ].get();
             if( HtmlOut::Control != pPosFlyFrame->GetOutFn() )
                 continue;
 

sw/source/filter/html/wrthtml.cxx

@@ -480,11 +480,7 @@ ErrCode SwHTMLWriter::WriteStream()
 
     // delete the table with floating frames
     OSL_ENSURE( !m_pHTMLPosFlyFrames, "Were not all frames output?" );
-    if( m_pHTMLPosFlyFrames )
-    {
-        m_pHTMLPosFlyFrames->DeleteAndDestroyAll();
-        m_pHTMLPosFlyFrames.reset();
-    }
+    m_pHTMLPosFlyFrames.reset();
 
     m_aHTMLControls.clear();