Related tdf#82775: Check for disposed-ness

...instead of dereferencing null pointers

Change-Id: I9d1709468a5b601b9f3d86dadea7a8e817f449d8

framework/source/uifactory/uielementfactorymanager.cxx

@@ -390,33 +390,24 @@ public:
 private:
     bool                                                  m_bConfigRead;
     css::uno::Reference< css::uno::XComponentContext >        m_xContext;
-    ConfigurationAccess_FactoryManager*                       m_pConfigAccess;
+    rtl::Reference<ConfigurationAccess_FactoryManager> m_pConfigAccess;
 };
 
 UIElementFactoryManager::UIElementFactoryManager( const Reference< XComponentContext >& rxContext ) :
     UIElementFactoryManager_BASE(m_aMutex),
     m_bConfigRead( false ),
-    m_xContext(rxContext)
-{
-    m_pConfigAccess = new ConfigurationAccess_FactoryManager(rxContext,
-            "/org.openoffice.Office.UI.Factories/Registered/UIElementFactories");
-    m_pConfigAccess->acquire();
-}
+    m_xContext(rxContext),
+    m_pConfigAccess(
+        new ConfigurationAccess_FactoryManager(
+            rxContext,
+            "/org.openoffice.Office.UI.Factories/Registered/UIElementFactories"))
+{}
 
-UIElementFactoryManager::~UIElementFactoryManager()
-{
-    disposing();
-}
+UIElementFactoryManager::~UIElementFactoryManager() {}
 
 void SAL_CALL UIElementFactoryManager::disposing()
 {
-    osl::MutexGuard g(rBHelper.rMutex);
-    if (m_pConfigAccess)
-    {
-        // reduce reference count
-        m_pConfigAccess->release();
-        m_pConfigAccess = nullptr;
-    }
+    m_pConfigAccess.clear();
 }
 
 // XUIElementFactory
@@ -429,6 +420,10 @@ throw ( css::container::NoSuchElementException, css::lang::IllegalArgumentExcept
     OUString aModuleId;
     { // SAFE
     osl::MutexGuard g(rBHelper.rMutex);
+    if (rBHelper.bDisposed) {
+        throw css::lang::DisposedException(
+            "disposed", static_cast<OWeakObject *>(this));
+    }
 
     if ( !m_bConfigRead )
     {
@@ -473,6 +468,10 @@ throw ( RuntimeException, std::exception )
 {
     // SAFE
     osl::MutexGuard g(rBHelper.rMutex);
+    if (rBHelper.bDisposed) {
+        throw css::lang::DisposedException(
+            "disposed", static_cast<OWeakObject *>(this));
+    }
 
     if ( !m_bConfigRead )
     {
@@ -489,6 +488,10 @@ throw ( RuntimeException, std::exception )
     OUString aServiceSpecifier;
     { // SAFE
     osl::MutexGuard g(rBHelper.rMutex);
+    if (rBHelper.bDisposed) {
+        throw css::lang::DisposedException(
+            "disposed", static_cast<OWeakObject *>(this));
+    }
 
     if ( !m_bConfigRead )
     {
@@ -524,6 +527,10 @@ throw ( ElementExistException, RuntimeException, std::exception )
 {
     // SAFE
     osl::MutexGuard g(rBHelper.rMutex);
+    if (rBHelper.bDisposed) {
+        throw css::lang::DisposedException(
+            "disposed", static_cast<OWeakObject *>(this));
+    }
 
     if ( !m_bConfigRead )
     {
@@ -540,6 +547,10 @@ throw ( NoSuchElementException, RuntimeException, std::exception )
 {
     // SAFE
     osl::MutexGuard g(rBHelper.rMutex);
+    if (rBHelper.bDisposed) {
+        throw css::lang::DisposedException(
+            "disposed", static_cast<OWeakObject *>(this));
+    }
 
     if ( !m_bConfigRead )
     {

framework/source/uifactory/windowcontentfactorymanager.cxx

@@ -33,6 +33,7 @@
 #include <cppuhelper/basemutex.hxx>
 #include <cppuhelper/compbase.hxx>
 #include <cppuhelper/supportsservice.hxx>
+#include <rtl/ref.hxx>
 #include <tools/diagnose_ex.h>
 
 using namespace ::com::sun::star;
@@ -79,34 +80,24 @@ private:
 
     css::uno::Reference< css::uno::XComponentContext >     m_xContext;
     bool                                               m_bConfigRead;
-    ConfigurationAccess_FactoryManager*                    m_pConfigAccess;
+    rtl::Reference<ConfigurationAccess_FactoryManager> m_pConfigAccess;
 };
 
 WindowContentFactoryManager::WindowContentFactoryManager( const uno::Reference< uno::XComponentContext >& rxContext ) :
     WindowContentFactoryManager_BASE(m_aMutex),
     m_xContext( rxContext ),
-    m_bConfigRead( false )
-{
-    m_pConfigAccess = new ConfigurationAccess_FactoryManager( m_xContext,
-            "/org.openoffice.Office.UI.WindowContentFactories/Registered/ContentFactories" );
-    m_pConfigAccess->acquire();
-}
+    m_bConfigRead( false ),
+    m_pConfigAccess(
+        new ConfigurationAccess_FactoryManager(
+            m_xContext,
+            "/org.openoffice.Office.UI.WindowContentFactories/Registered/ContentFactories"))
+{}
 
-WindowContentFactoryManager::~WindowContentFactoryManager()
-{
-    disposing();
-}
+WindowContentFactoryManager::~WindowContentFactoryManager() {}
 
 void SAL_CALL WindowContentFactoryManager::disposing()
 {
-    osl::MutexGuard g(rBHelper.rMutex);
-
-    if (m_pConfigAccess)
-    {
-        // reduce reference count
-        m_pConfigAccess->release();
-        m_pConfigAccess = nullptr;
-    }
+    m_pConfigAccess.clear();
 }
 
 // XSingleComponentFactory
@@ -165,6 +156,10 @@ throw (uno::Exception, uno::RuntimeException, std::exception)
         // module identifier, user interface element type and name
         { // SAFE
         osl::MutexGuard g(rBHelper.rMutex);
+        if (rBHelper.bDisposed) {
+            throw css::lang::DisposedException(
+                "disposed", static_cast<OWeakObject *>(this));
+        }
         if ( !m_bConfigRead )
         {
             m_bConfigRead = true;