fix invalid memory access in chart tests

Change-Id: I056101d146c939ff958c83efc57fd110e8d52509

chart2/inc/ChartView.hxx

@@ -197,6 +197,7 @@ public:
                   std::exception) SAL_OVERRIDE;
 
     void setViewDirty();
+    void updateOpenGLWindow();
 
 private: //methods
     ChartView();

chart2/source/model/main/ChartModel.cxx

@@ -1429,6 +1429,8 @@ void ChartModel::update()
 
     mpChartView->setViewDirty();
     mpChartView->update();
+    if(mpChartView)
+        mpChartView->updateOpenGLWindow();
 }
 
 

chart2/source/view/main/ChartView.cxx

@@ -165,22 +165,25 @@ public:
     virtual void mouseDragMove(const Point& rBegin, const Point& rEnd, sal_uInt16 nButton) SAL_OVERRIDE;
     virtual void scroll(long nDelta) SAL_OVERRIDE;
     virtual void contextDestroyed() SAL_OVERRIDE;
+
+    void updateOpenGLWindow();
 private:
     ChartView* mpView;
     bool mbContextDestroyed;
+    OpenGLWindow* mpWindow;
 };
 
 GL2DRenderer::GL2DRenderer(ChartView* pView):
     mpView(pView),
-    mbContextDestroyed(false)
+    mbContextDestroyed(false),
+    mpWindow(mpView->mrChartModel.getOpenGLWindow())
 {
 }
 
 GL2DRenderer::~GL2DRenderer()
 {
-    OpenGLWindow* pWindow = mpView->mrChartModel.getOpenGLWindow();
-    if(!mbContextDestroyed &&pWindow)
-        pWindow->setRenderer(NULL);
+    if(!mbContextDestroyed && mpWindow)
+        mpWindow->setRenderer(NULL);
 }
 
 void GL2DRenderer::update()
@@ -205,6 +208,27 @@ void GL2DRenderer::contextDestroyed()
     mbContextDestroyed = true;
 }
 
+void GL2DRenderer::updateOpenGLWindow()
+{
+    if(mbContextDestroyed)
+        return;
+
+    OpenGLWindow* pWindow = mpView->mrChartModel.getOpenGLWindow();
+    if(pWindow != mpWindow)
+    {
+        if(mpWindow)
+        {
+            mpWindow->setRenderer(NULL);
+        }
+
+        if(pWindow)
+        {
+            pWindow->setRenderer(this);
+        }
+    }
+    mpWindow = pWindow;
+}
+
 const uno::Sequence<sal_Int8>& ExplicitValueProvider::getUnoTunnelId()
 {
     return theExplicitValueProviderUnoTunnelId::get().getSeq();
@@ -3256,6 +3280,11 @@ void ChartView::createShapes3D()
     m_pGL3DPlotter->render();
 }
 
+void ChartView::updateOpenGLWindow()
+{
+    mp2DRenderer->updateOpenGLWindow();
+}
+
 } //namespace chart
 
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