simplify SfxWhichIter

only one of 164 calls used the ctor with a restricting range.
handle this special case.
remove nFrom and nTo members.
use operator[] on range pointer to highlight we access lower [0]
and upper [1] range bound.
remove dtor.

Change-Id: I87b28502515e45bb190425eb88aa187ac0b5b2d2
Reviewed-on: https://gerrit.libreoffice.org/33911Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jochen Nitschke <j.nitschke+logerrit@ok.de>

include/svl/whiter.hxx

@@ -26,14 +26,14 @@ class SfxItemSet;
 
 class SVL_DLLPUBLIC SfxWhichIter
 {
-    const sal_uInt16 *pRanges, *pStart;
-    sal_uInt16 nOfst, nFrom, nTo;
+    const sal_uInt16* const pStart;
+    const sal_uInt16*       pRanges;
+    sal_uInt16              nOffset;
 
 public:
-    SfxWhichIter( const SfxItemSet& rSet, sal_uInt16 nFrom = 0, sal_uInt16 nTo = USHRT_MAX );
-    ~SfxWhichIter();
+    SfxWhichIter( const SfxItemSet& rSet );
 
-    sal_uInt16  GetCurWhich() const { return *pRanges + nOfst; }
+    sal_uInt16  GetCurWhich() const { return pRanges[0] + nOffset; }
     sal_uInt16  NextWhich();
     sal_uInt16  FirstWhich();
 };

sd/source/ui/view/drviewsf.cxx

@@ -690,11 +690,12 @@ void DrawViewShell::GetAttrState( SfxItemSet& rSet )
         // changed from SfxItemState::DEFAULT (_ON) to SfxItemState::DISABLED
         if( mpDrawView->AreObjectsMarked() )
         {
-            SfxWhichIter aNewIter( *pSet, XATTR_LINE_FIRST, XATTR_FILL_LAST );
+            SfxWhichIter aNewIter( *pSet );
             nWhich = aNewIter.FirstWhich();
             while( nWhich )
             {
-                if( SfxItemState::DEFAULT == pSet->GetItemState( nWhich ) )
+                if (nWhich >= XATTR_LINE_FIRST && nWhich <= XATTR_LINE_LAST
+                    && SfxItemState::DEFAULT == pSet->GetItemState(nWhich) )
                 {
                     rSet.ClearItem( nWhich );
                     rSet.DisableItem( nWhich );

svl/source/items/whiter.cxx

@@ -21,44 +21,33 @@
 #include <svl/whiter.hxx>
 #include <svl/itemset.hxx>
 
-SfxWhichIter::SfxWhichIter( const SfxItemSet& rSet, sal_uInt16 nFromWh, sal_uInt16 nToWh ):
-    pRanges(rSet.GetRanges()),
+SfxWhichIter::SfxWhichIter( const SfxItemSet& rSet ):
     pStart(rSet.GetRanges()),
-    nOfst(0), nFrom(nFromWh), nTo(nToWh)
-{
-    if (nFrom > 0)
-        (void)FirstWhich();
-}
-
-SfxWhichIter::~SfxWhichIter()
+    pRanges(pStart),
+    nOffset(0)
 {
 }
 
 sal_uInt16 SfxWhichIter::NextWhich()
 {
-    while ( 0 != *pRanges )
+    if ( 0 == pRanges[0] )
+        return 0;
+
+    const sal_uInt16 nLastWhich = pRanges[0] + nOffset;
+    ++nOffset;
+    if (pRanges[1] == nLastWhich)
     {
-        const sal_uInt16 nLastWhich = *pRanges + nOfst;
-        ++nOfst;
-        if (*(pRanges+1) == nLastWhich)
-        {
-            pRanges += 2;
-            nOfst = 0;
-        }
-        sal_uInt16 nWhich = *pRanges + nOfst;
-        if ( 0 == nWhich || ( nWhich >= nFrom && nWhich <= nTo ) )
-            return nWhich;
+        pRanges += 2;
+        nOffset = 0;
     }
-    return 0;
+    return pRanges[0] + nOffset;
 }
 
 sal_uInt16 SfxWhichIter::FirstWhich()
 {
     pRanges = pStart;
-    nOfst = 0;
-    if ( *pRanges >= nFrom && *pRanges <= nTo )
-        return *pRanges;
-    return NextWhich();
+    nOffset = 0;
+    return pRanges[0];
 }
 
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