tdf#89329: use shared_ptr for pImpl in toolpanelopt

Change-Id: I2035971f6633aed1389ffae5815c7000699b9735
Reviewed-on: https://gerrit.libreoffice.org/26279Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>

include/svtools/toolpanelopt.hxx

@@ -25,13 +25,8 @@
 #include <osl/mutex.hxx>
 #include <rtl/ustring.hxx>
 #include <unotools/options.hxx>
+#include <memory>
 
-/** forward declaration to our private date container implementation
-
-    We use these class as internal member to support small memory requirements.
-    You can create the container if it is necessary. The class which use these mechanism
-    is faster and smaller then a complete implementation!
-*/
 class SvtToolPanelOptions_Impl;
 
 /** collect information about sidebar group
@@ -41,16 +36,6 @@ class SvtToolPanelOptions_Impl;
 class SVT_DLLPUBLIC SvtToolPanelOptions: public utl::detail::Options
 {
     public:
-        /** standard constructor and destructor
-
-            This will initialize an instance with default values.
-            We implement these class with a refcount mechanism! Every instance of this class increase it
-            at create and decrease it at delete time - but all instances use the same data container!
-            He is implemented as a static member ...
-
-            \sa    member m_nRefCount
-            \sa    member m_pDataContainer
-        */
         SvtToolPanelOptions();
         virtual ~SvtToolPanelOptions();
 
@@ -77,17 +62,7 @@ class SVT_DLLPUBLIC SvtToolPanelOptions: public utl::detail::Options
         SVT_DLLPRIVATE static ::osl::Mutex& GetInitMutex();
 
     private:
-
-        /**
-            \attention
-            Don't initialize these static members in these headers!
-            \li Double defined symbols will be detected ...
-            \li and unresolved externals exist at linking time.
-            Do it in your source only.
-        */
-        static SvtToolPanelOptions_Impl* m_pDataContainer;
-        static sal_Int32                 m_nRefCount;
-
+        std::shared_ptr<SvtToolPanelOptions_Impl> m_pImpl;
 };
 
 #endif

svtools/source/config/toolpanelopt.cxx

@@ -297,20 +297,18 @@ Sequence< OUString > SvtToolPanelOptions_Impl::GetPropertyNames()
     return Sequence< OUString >( pProperties, SAL_N_ELEMENTS( pProperties ) );
 }
 
-//  initialize static member, see definition for further information
-//  DON'T DO IT IN YOUR HEADER!
-SvtToolPanelOptions_Impl* SvtToolPanelOptions::m_pDataContainer = nullptr;
-sal_Int32               SvtToolPanelOptions::m_nRefCount = 0;
+std::weak_ptr<SvtToolPanelOptions_Impl> m_pOptions;
 
 SvtToolPanelOptions::SvtToolPanelOptions()
 {
     // Global access, must be guarded (multithreading!).
     MutexGuard aGuard( GetInitMutex() );
-    ++m_nRefCount;
-    // ... and initialize our data container only if it not already exist!
-    if( m_pDataContainer == nullptr )
+
+    m_pImpl = m_pOptions.lock();
+    if( !m_pImpl )
     {
-       m_pDataContainer = new SvtToolPanelOptions_Impl;
+       m_pImpl = std::make_shared<SvtToolPanelOptions_Impl>();
+       m_pOptions = m_pImpl;
     }
 }
 
@@ -318,63 +316,58 @@ SvtToolPanelOptions::~SvtToolPanelOptions()
 {
     // Global access, must be guarded (multithreading!)
     MutexGuard aGuard( GetInitMutex() );
-    --m_nRefCount;
-    // If last instance was deleted we must destroy our static data container!
-    if( m_nRefCount <= 0 )
-    {
-        delete m_pDataContainer;
-        m_pDataContainer = nullptr;
-    }
+
+    m_pImpl.reset();
 }
 
 bool SvtToolPanelOptions::GetVisibleImpressView() const
 {
-    return m_pDataContainer->m_bVisibleImpressView;
+    return m_pImpl->m_bVisibleImpressView;
 }
 
 void SvtToolPanelOptions::SetVisibleImpressView(bool bVisible)
 {
-    m_pDataContainer->m_bVisibleImpressView = bVisible;
+    m_pImpl->m_bVisibleImpressView = bVisible;
 }
 
 bool SvtToolPanelOptions::GetVisibleOutlineView() const
 {
-    return m_pDataContainer->m_bVisibleOutlineView;
+    return m_pImpl->m_bVisibleOutlineView;
 }
 
 void SvtToolPanelOptions::SetVisibleOutlineView(bool bVisible)
 {
-    m_pDataContainer->m_bVisibleOutlineView = bVisible;
+    m_pImpl->m_bVisibleOutlineView = bVisible;
 }
 
 bool SvtToolPanelOptions::GetVisibleNotesView() const
 {
-    return m_pDataContainer->m_bVisibleNotesView;
+    return m_pImpl->m_bVisibleNotesView;
 }
 
 void SvtToolPanelOptions::SetVisibleNotesView(bool bVisible)
 {
-    m_pDataContainer->m_bVisibleNotesView = bVisible;
+    m_pImpl->m_bVisibleNotesView = bVisible;
 }
 
 bool SvtToolPanelOptions::GetVisibleHandoutView() const
 {
-    return m_pDataContainer->m_bVisibleHandoutView;
+    return m_pImpl->m_bVisibleHandoutView;
 }
 
 void SvtToolPanelOptions::SetVisibleHandoutView(bool bVisible)
 {
-    m_pDataContainer->m_bVisibleHandoutView = bVisible;
+    m_pImpl->m_bVisibleHandoutView = bVisible;
 }
 
 bool SvtToolPanelOptions::GetVisibleSlideSorterView() const
 {
-    return m_pDataContainer->m_bVisibleSlideSorterView;
+    return m_pImpl->m_bVisibleSlideSorterView;
 }
 
 void SvtToolPanelOptions::SetVisibleSlideSorterView(bool bVisible)
 {
-    m_pDataContainer->m_bVisibleSlideSorterView = bVisible;
+    m_pImpl->m_bVisibleSlideSorterView = bVisible;
 }
 
 namespace