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diff --git a/sd/source/ui/framework/module/ShellStackGuard.hxx b/sd/source/ui/framework/module/ShellStackGuard.hxx
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+++ b/sd/source/ui/framework/module/ShellStackGuard.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef SD_FRAMEWORK_SHELL_STACK_GUARD_HXX
+#define SD_FRAMEWORK_SHELL_STACK_GUARD_HXX
+
+#include <cppuhelper/basemutex.hxx>
+
+#include "framework/ConfigurationController.hxx"
+
+#include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp>
+#include <com/sun/star/drawing/framework/XConfigurationController.hpp>
+#include <com/sun/star/frame/XController.hpp>
+
+#include <vcl/timer.hxx>
+#include <cppuhelper/compbase1.hxx>
+#include <boost/scoped_ptr.hpp>
+
+
+namespace css = ::com::sun::star;
+
+
+namespace {
+
+typedef ::cppu::WeakComponentImplHelper1 <
+    css::drawing::framework::XConfigurationChangeListener
+    > ShellStackGuardInterfaceBase;
+
+} // end of anonymous namespace.
+
+namespace sd {
+
+class ViewShellBase;
+
+}
+
+
+
+
+namespace sd { namespace framework {
+
+/** This module locks updates of the current configuration in situations
+    when the shell stack must not be modified.
+
+    On every start of a configuration update the ShellStackGuard checks the
+    printer.  If it is printing the configuration update is locked.  It then
+    polls the printer and unlocks updates when printing finishes.
+
+    When in the future there are no resources left that use shells then this
+    module can be removed.
+*/
+class ShellStackGuard
+    : private ::cppu::BaseMutex,
+      public ShellStackGuardInterfaceBase
+{
+public:
+    ShellStackGuard (css::uno::Reference<css::frame::XController>& rxController);
+    virtual ~ShellStackGuard (void);
+
+    virtual void SAL_CALL disposing (void);
+
+
+    // XConfigurationChangeListener
+
+    virtual void SAL_CALL notifyConfigurationChange (
+        const css::drawing::framework::ConfigurationChangeEvent& rEvent)
+        throw (css::uno::RuntimeException);
+
+    // XEventListener
+
+    virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent)
+        throw (css::uno::RuntimeException);
+
+private:
+    css::uno::Reference<css::drawing::framework::XConfigurationController>
+        mxConfigurationController;
+    ViewShellBase* mpBase;
+    ::boost::scoped_ptr<ConfigurationController::Lock> mpUpdateLock;
+    Timer maPrinterPollingTimer;
+
+    DECL_LINK(TimeoutHandler, Timer*);
+
+    /** Return <TRUE/> when the printer is printing.  Return <FALSE/> when
+        the printer is not printing, or there is no printer, or someting
+        else went wrong.
+    */
+    bool IsPrinting (void) const;
+};
+
+} } // end of namespace sd::framework
+
+#endif