treat ExtMargins with same recurse protection as Margins

(cherry picked from commit bcecf9b13b7eee0e7c60a6827a310f8b38d13f69)

Change-Id: I24640971ea6ca89878043966293492a991f01008
Reviewed-on: https://gerrit.libreoffice.org/23146
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: David Tardon <dtardon@redhat.com>
(cherry picked from commit 8ff93a55256e96e1903bfc69b439238d43cabd26)

3 files changed, 16 insertions, 5 deletions

diff --git a/lotuswordpro/qa/cppunit/data/fail/recurse-1.lwp b/lotuswordpro/qa/cppunit/data/fail/recurse-1.lwp
new file mode 100644
index 000000000000..ffc7a44e346a
--- /dev/null
+++ b/lotuswordpro/qa/cppunit/data/fail/recurse-1.lwp
diff --git a/lotuswordpro/source/filter/lwplayout.cxx b/lotuswordpro/source/filter/lwplayout.cxx
index de77f9c421f4..f8631da0fd38 100644
--- a/lotuswordpro/source/filter/lwplayout.cxx
+++ b/lotuswordpro/source/filter/lwplayout.cxx
@@ -83,6 +83,7 @@ LwpVirtualLayout::LwpVirtualLayout(LwpObjectHeader &objHdr, LwpSvStream* pStrm)
     , m_bGettingHasProtection(false)
     , m_bGettingIsProtected(false)
     , m_bGettingMarginsValue(false)
+    , m_bGettingExtMarginsValue(false)
     , m_nAttributes(0)
     , m_nAttributes2(0)
     , m_nAttributes3(0)
@@ -776,7 +777,7 @@ double LwpMiddleLayout::MarginsValue(const sal_uInt8 &nWhichSide)
  * @param:
  * @return:
 */
-double LwpMiddleLayout::GetExtMarginsValue(const sal_uInt8 &nWhichSide)
+double LwpMiddleLayout::ExtMarginsValue(const sal_uInt8 &nWhichSide)
 {
     double fValue = 0;
     if(m_nOverrideFlag & OVER_MARGINS)
@@ -794,7 +795,7 @@ double LwpMiddleLayout::GetExtMarginsValue(const sal_uInt8 &nWhichSide)
         fValue = pStyle->GetExtMarginsValue(nWhichSide);
         return fValue;
     }
-    return LwpVirtualLayout::GetExtMarginsValue(nWhichSide);
+    return LwpVirtualLayout::ExtMarginsValue(nWhichSide);
 }
 /**
  * @descr:  Get the LwpBorderStuff object according to m_LayBorderStuff id.
diff --git a/lotuswordpro/source/filter/lwplayout.hxx b/lotuswordpro/source/filter/lwplayout.hxx
index ee46b3d5340d..6102b071623a 100644
--- a/lotuswordpro/source/filter/lwplayout.hxx
+++ b/lotuswordpro/source/filter/lwplayout.hxx
@@ -103,7 +103,6 @@ public:
     inline virtual sal_uInt16 GetNumCols(){return 1;}
     virtual double GetColWidth(sal_uInt16 nIndex);
     virtual double GetColGap(sal_uInt16 nIndex);
-    virtual double GetExtMarginsValue(const sal_uInt8& /*nWhichSide*/){return 0;}
     virtual bool IsAutoGrow(){ return false;}
     virtual bool IsAutoGrowUp(){ return false;}
     virtual bool IsAutoGrowDown(){ return false;}
@@ -158,6 +157,15 @@ public:
         m_bGettingMarginsValue = false;
         return fRet;
     }
+    double GetExtMarginsValue(const sal_uInt8& nWhichSide)
+    {
+        if (m_bGettingExtMarginsValue)
+            throw std::runtime_error("recursion in layout");
+        m_bGettingExtMarginsValue = true;
+        auto fRet = ExtMarginsValue(nWhichSide);
+        m_bGettingExtMarginsValue = false;
+        return fRet;
+    }
     OUString GetStyleName(){ return m_StyleName;}
     bool IsComplex();
     virtual bool IsAnchorPage(){ return false;}
@@ -211,6 +219,7 @@ protected:
     virtual bool HonorProtection();
     virtual bool IsProtected();
     virtual double MarginsValue(const sal_uInt8& /*nWhichSide*/){return 0;}
+    virtual double ExtMarginsValue(const sal_uInt8& /*nWhichSide*/){return 0;}
     virtual bool MarginsSameAsParent();
 protected:
     bool m_bGettingHonorProtection;
@@ -218,6 +227,7 @@ protected:
     bool m_bGettingHasProtection;
     bool m_bGettingIsProtected;
     bool m_bGettingMarginsValue;
+    bool m_bGettingExtMarginsValue;
     sal_uInt32 m_nAttributes;
     sal_uInt32 m_nAttributes2;
     sal_uInt32 m_nAttributes3;
@@ -328,8 +338,6 @@ class LwpMiddleLayout : public LwpVirtualLayout
 public:
     LwpMiddleLayout( LwpObjectHeader &objHdr, LwpSvStream* pStrm );
     virtual ~LwpMiddleLayout();
-    virtual double MarginsValue(const sal_uInt8& nWhichSide) SAL_OVERRIDE;
-    virtual double GetExtMarginsValue(const sal_uInt8& nWhichSide) SAL_OVERRIDE;
     LwpLayoutGeometry* GetGeometry()
     {
         if (m_bGettingGeometry)
@@ -385,6 +393,8 @@ public:
 protected:
     void Read() SAL_OVERRIDE;
     virtual bool MarginsSameAsParent() SAL_OVERRIDE;
+    virtual double MarginsValue(const sal_uInt8& nWhichSide) SAL_OVERRIDE;
+    virtual double ExtMarginsValue(const sal_uInt8& nWhichSide) SAL_OVERRIDE;
 private:
     LwpObjectID m_BasedOnStyle;
     LwpLayoutGeometry* Geometry();