10 files changed, 2272 insertions, 0 deletions
diff --git a/sd/source/ui/tools/AsynchronousCall.cxx b/sd/source/ui/tools/AsynchronousCall.cxx
new file mode 100644
index 000000000..dcf8126eb
--- /dev/null
+++ b/sd/source/ui/tools/AsynchronousCall.cxx
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <memory>
+#include <tools/AsynchronousCall.hxx>
+
+namespace sd::tools {
+
+AsynchronousCall::AsynchronousCall()
+    : maTimer(),
+      mpFunction()
+{
+    maTimer.SetInvokeHandler( LINK(this,AsynchronousCall,TimerCallback) );
+}
+
+AsynchronousCall::~AsynchronousCall()
+{
+    mpFunction.reset();
+    maTimer.Stop();
+}
+
+void AsynchronousCall::Post (const AsynchronousFunction& rFunction)
+{
+    mpFunction.reset(new AsynchronousFunction(rFunction));
+    maTimer.SetTimeout(10);
+    maTimer.Start();
+}
+
+IMPL_LINK(AsynchronousCall,TimerCallback,Timer*,pTimer,void)
+{
+    if (pTimer == &maTimer)
+    {
+        ::std::unique_ptr<AsynchronousFunction> pFunction;
+        pFunction.swap(mpFunction);
+        (*pFunction)();
+    }
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/ConfigurationAccess.cxx b/sd/source/ui/tools/ConfigurationAccess.cxx
new file mode 100644
index 000000000..9b14a03a1
--- /dev/null
+++ b/sd/source/ui/tools/ConfigurationAccess.cxx
@@ -0,0 +1,175 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/ConfigurationAccess.hxx>
+#include <com/sun/star/lang/XMultiServiceFactory.hpp>
+#include <com/sun/star/container/XHierarchicalNameAccess.hpp>
+#include <com/sun/star/configuration/theDefaultProvider.hpp>
+#include <com/sun/star/container/XNameAccess.hpp>
+#include <com/sun/star/util/XChangesBatch.hpp>
+#include <comphelper/processfactory.hxx>
+#include <comphelper/propertysequence.hxx>
+#include <tools/diagnose_ex.h>
+#include <sal/log.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace sd::tools {
+
+ConfigurationAccess::ConfigurationAccess (
+    const Reference<XComponentContext>& rxContext,
+    const OUString& rsRootName,
+    const WriteMode eMode)
+    : mxRoot()
+{
+    Reference<lang::XMultiServiceFactory> xProvider =
+           configuration::theDefaultProvider::get( rxContext );
+    Initialize(xProvider, rsRootName, eMode);
+}
+
+ConfigurationAccess::ConfigurationAccess (
+    const OUString& rsRootName,
+    const WriteMode eMode)
+    : mxRoot()
+{
+    Reference<lang::XMultiServiceFactory> xProvider =
+        configuration::theDefaultProvider::get( ::comphelper::getProcessComponentContext() );
+    Initialize(xProvider, rsRootName, eMode);
+}
+
+void ConfigurationAccess::Initialize (
+    const Reference<lang::XMultiServiceFactory>& rxProvider,
+    const OUString& rsRootName,
+    const WriteMode eMode)
+{
+    try
+    {
+        Sequence<Any> aCreationArguments(comphelper::InitAnyPropertySequence(
+        {
+            {"nodepath", makeAny(rsRootName)},
+            {"depth", makeAny(sal_Int32(-1))}
+        }));
+
+        OUString sAccessService;
+        if (eMode == READ_ONLY)
+            sAccessService = "com.sun.star.configuration.ConfigurationAccess";
+        else
+            sAccessService = "com.sun.star.configuration.ConfigurationUpdateAccess";
+
+        mxRoot = rxProvider->createInstanceWithArguments(
+            sAccessService,
+            aCreationArguments);
+    }
+    catch (Exception&)
+    {
+        DBG_UNHANDLED_EXCEPTION("sd.tools");
+    }
+}
+
+Any ConfigurationAccess::GetConfigurationNode (
+    const OUString& sPathToNode)
+{
+    return GetConfigurationNode(
+        Reference<container::XHierarchicalNameAccess>(mxRoot, UNO_QUERY),
+        sPathToNode);
+}
+
+Any ConfigurationAccess::GetConfigurationNode (
+    const css::uno::Reference<css::container::XHierarchicalNameAccess>& rxNode,
+    const OUString& sPathToNode)
+{
+    if (sPathToNode.isEmpty())
+        return Any(rxNode);
+
+    try
+    {
+        if (rxNode.is())
+        {
+            return rxNode->getByHierarchicalName(sPathToNode);
+        }
+    }
+    catch (const Exception&)
+    {
+        TOOLS_WARN_EXCEPTION("sd", "caught exception while getting configuration node" << sPathToNode);
+    }
+
+    return Any();
+}
+
+void ConfigurationAccess::CommitChanges()
+{
+    Reference<util::XChangesBatch> xConfiguration (mxRoot, UNO_QUERY);
+    if (xConfiguration.is())
+        xConfiguration->commitChanges();
+}
+
+void ConfigurationAccess::ForAll (
+    const Reference<container::XNameAccess>& rxContainer,
+    const ::std::vector<OUString>& rArguments,
+    const Functor& rFunctor)
+{
+    if (!rxContainer.is())
+        return;
+
+    ::std::vector<Any> aValues(rArguments.size());
+    const Sequence<OUString> aKeys (rxContainer->getElementNames());
+    for (const OUString& rsKey : aKeys)
+    {
+        Reference<container::XNameAccess> xSetItem (rxContainer->getByName(rsKey), UNO_QUERY);
+        if (xSetItem.is())
+        {
+            // Get from the current item of the container the children
+            // that match the names in the rArguments list.
+            for (size_t nValueIndex=0; nValueIndex<aValues.size(); ++nValueIndex)
+                aValues[nValueIndex] = xSetItem->getByName(rArguments[nValueIndex]);
+        }
+        rFunctor(rsKey, aValues);
+    }
+}
+
+void ConfigurationAccess::FillList(
+    const Reference<container::XNameAccess>& rxContainer,
+    const OUString& rsArgument,
+    ::std::vector<OUString>& rList)
+{
+    try
+    {
+        if (rxContainer.is())
+        {
+            Sequence<OUString> aKeys (rxContainer->getElementNames());
+            rList.resize(aKeys.getLength());
+            for (sal_Int32 nItemIndex=0; nItemIndex<aKeys.getLength(); ++nItemIndex)
+            {
+                Reference<container::XNameAccess> xSetItem (
+                    rxContainer->getByName(aKeys[nItemIndex]), UNO_QUERY);
+                if (xSetItem.is())
+                {
+                    xSetItem->getByName(rsArgument) >>= rList[nItemIndex];
+                }
+            }
+        }
+    }
+    catch (RuntimeException&)
+    {}
+}
+
+} // end of namespace sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/EventMultiplexer.cxx b/sd/source/ui/tools/EventMultiplexer.cxx
new file mode 100644
index 000000000..e5fe2d31f
--- /dev/null
+++ b/sd/source/ui/tools/EventMultiplexer.cxx
@@ -0,0 +1,661 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <EventMultiplexer.hxx>
+
+#include <MutexOwner.hxx>
+#include <ViewShellBase.hxx>
+#include <drawdoc.hxx>
+#include <DrawController.hxx>
+#include <SlideSorterViewShell.hxx>
+#include <framework/FrameworkHelper.hxx>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <com/sun/star/frame/XFrame.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp>
+#include <com/sun/star/drawing/framework/XView.hpp>
+#include <cppuhelper/compbase.hxx>
+#include <sfx2/viewfrm.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::lang;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::drawing::framework;
+
+using ::sd::framework::FrameworkHelper;
+
+class SdDrawDocument;
+
+namespace {
+static const sal_Int32 ResourceActivationEvent = 0;
+static const sal_Int32 ResourceDeactivationEvent = 1;
+static const sal_Int32 ConfigurationUpdateEvent = 2;
+}
+
+namespace sd::tools {
+
+typedef cppu::WeakComponentImplHelper<
+      css::beans::XPropertyChangeListener,
+      css::frame::XFrameActionListener,
+      css::view::XSelectionChangeListener,
+      css::drawing::framework::XConfigurationChangeListener
+    > EventMultiplexerImplementationInterfaceBase;
+
+class EventMultiplexer::Implementation
+    : protected MutexOwner,
+      public EventMultiplexerImplementationInterfaceBase,
+      public SfxListener
+{
+public:
+    explicit Implementation (ViewShellBase& rBase);
+    virtual ~Implementation() override;
+
+    void AddEventListener (
+        const Link<EventMultiplexerEvent&,void>& rCallback);
+
+    void RemoveEventListener (
+        const Link<EventMultiplexerEvent&,void>& rCallback);
+
+    void CallListeners (EventMultiplexerEvent& rEvent);
+
+    //===== lang::XEventListener ==============================================
+    virtual void SAL_CALL
+        disposing (const css::lang::EventObject& rEventObject) override;
+
+    //===== beans::XPropertySetListener =======================================
+    virtual void SAL_CALL
+        propertyChange (
+            const css::beans::PropertyChangeEvent& rEvent) override;
+
+    //===== view::XSelectionChangeListener ====================================
+    virtual void SAL_CALL
+        selectionChanged (
+            const css::lang::EventObject& rEvent) override;
+
+    //===== frame::XFrameActionListener  ======================================
+    /** For certain actions the listener connects to a new controller of the
+        frame it is listening to.  This usually happens when the view shell
+        in the center pane is replaced by another view shell.
+    */
+    virtual void SAL_CALL
+        frameAction (const css::frame::FrameActionEvent& rEvent) override;
+
+    //===== drawing::framework::XConfigurationChangeListener ==================
+    virtual void SAL_CALL
+        notifyConfigurationChange (
+            const css::drawing::framework::ConfigurationChangeEvent& rEvent) override;
+
+    virtual void SAL_CALL disposing() override;
+
+protected:
+    virtual void Notify (
+        SfxBroadcaster& rBroadcaster,
+        const SfxHint& rHint) override;
+
+private:
+    ViewShellBase& mrBase;
+    typedef ::std::vector<Link<EventMultiplexerEvent&,void>> ListenerList;
+    ListenerList maListeners;
+
+    /// Remember whether we are listening to the UNO controller.
+    bool mbListeningToController;
+    /// Remember whether we are listening to the frame.
+    bool mbListeningToFrame;
+
+    css::uno::WeakReference<css::frame::XController> mxControllerWeak;
+    css::uno::WeakReference<css::frame::XFrame> mxFrameWeak;
+    SdDrawDocument* mpDocument;
+    css::uno::WeakReference<css::drawing::framework::XConfigurationController>
+         mxConfigurationControllerWeak;
+
+    void ReleaseListeners();
+
+    void ConnectToController();
+    void DisconnectFromController();
+
+    void CallListeners (
+        EventMultiplexerEventId eId,
+        void const * pUserData = nullptr);
+
+    DECL_LINK(SlideSorterSelectionChangeListener, LinkParamNone*, void);
+};
+
+const char aCurrentPagePropertyName[] = "CurrentPage";
+const char aEditModePropertyName[] = "IsMasterPageMode";
+
+//===== EventMultiplexer ======================================================
+
+EventMultiplexer::EventMultiplexer (ViewShellBase& rBase)
+    : mpImpl (new EventMultiplexer::Implementation(rBase))
+{
+}
+
+EventMultiplexer::~EventMultiplexer()
+{
+    try
+    {
+        mpImpl->dispose();
+    }
+    catch (const RuntimeException&)
+    {
+    }
+    catch (const Exception&)
+    {
+    }
+}
+
+void EventMultiplexer::AddEventListener (
+    const Link<EventMultiplexerEvent&,void>& rCallback)
+{
+    mpImpl->AddEventListener(rCallback);
+}
+
+void EventMultiplexer::RemoveEventListener (
+    const Link<EventMultiplexerEvent&,void>& rCallback)
+{
+    mpImpl->RemoveEventListener(rCallback);
+}
+
+void EventMultiplexer::MultiplexEvent(
+    EventMultiplexerEventId eEventId,
+    void const * pUserData )
+{
+    EventMultiplexerEvent aEvent(eEventId, pUserData);
+    mpImpl->CallListeners(aEvent);
+}
+
+//===== EventMultiplexer::Implementation ======================================
+
+EventMultiplexer::Implementation::Implementation (ViewShellBase& rBase)
+    : MutexOwner(),
+      EventMultiplexerImplementationInterfaceBase(maMutex),
+      SfxListener(),
+      mrBase (rBase),
+      mbListeningToController (false),
+      mbListeningToFrame (false),
+      mxControllerWeak(nullptr),
+      mxFrameWeak(nullptr),
+      mpDocument(nullptr),
+      mxConfigurationControllerWeak()
+{
+    // Connect to the frame to listen for controllers being exchanged.
+    // Listen to changes of certain properties.
+    Reference<frame::XFrame> xFrame =
+        mrBase.GetFrame()->GetFrame().GetFrameInterface();
+    mxFrameWeak = xFrame;
+    if (xFrame.is())
+    {
+        xFrame->addFrameActionListener (
+            Reference<frame::XFrameActionListener>(
+               static_cast<XWeak*>(this), UNO_QUERY));
+        mbListeningToFrame = true;
+    }
+
+    // Connect to the current controller.
+    ConnectToController ();
+
+    // Listen for document changes.
+    mpDocument = mrBase.GetDocument();
+    if (mpDocument != nullptr)
+        StartListening (*mpDocument);
+
+    // Listen for configuration changes.
+    Reference<XControllerManager> xControllerManager (
+        Reference<XWeak>(&mrBase.GetDrawController()), UNO_QUERY);
+    if (!xControllerManager.is())
+        return;
+
+    Reference<XConfigurationController> xConfigurationController (
+        xControllerManager->getConfigurationController());
+    mxConfigurationControllerWeak = xConfigurationController;
+    if (!xConfigurationController.is())
+        return;
+
+    Reference<XComponent> xComponent (xConfigurationController, UNO_QUERY);
+    if (xComponent.is())
+        xComponent->addEventListener(static_cast<beans::XPropertyChangeListener*>(this));
+
+    xConfigurationController->addConfigurationChangeListener(
+        this,
+        FrameworkHelper::msResourceActivationEvent,
+        makeAny(ResourceActivationEvent));
+    xConfigurationController->addConfigurationChangeListener(
+        this,
+        FrameworkHelper::msResourceDeactivationEvent,
+        makeAny(ResourceDeactivationEvent));
+    xConfigurationController->addConfigurationChangeListener(
+        this,
+        FrameworkHelper::msConfigurationUpdateEndEvent,
+        makeAny(ConfigurationUpdateEvent));
+}
+
+EventMultiplexer::Implementation::~Implementation()
+{
+    DBG_ASSERT( !mbListeningToFrame,
+        "sd::EventMultiplexer::Implementation::~Implementation(), disposing was not called!" );
+}
+
+void EventMultiplexer::Implementation::ReleaseListeners()
+{
+    if (mbListeningToFrame)
+    {
+        mbListeningToFrame = false;
+
+        // Stop listening for changes of certain properties.
+        Reference<frame::XFrame> xFrame (mxFrameWeak);
+        if (xFrame.is())
+        {
+            xFrame->removeFrameActionListener (
+                Reference<frame::XFrameActionListener>(
+                    static_cast<XWeak*>(this), UNO_QUERY));
+        }
+    }
+
+    DisconnectFromController ();
+
+    if (mpDocument != nullptr)
+    {
+        EndListening (*mpDocument);
+        mpDocument = nullptr;
+    }
+
+    // Stop listening for configuration changes.
+    Reference<XConfigurationController> xConfigurationController (mxConfigurationControllerWeak);
+    if (xConfigurationController.is())
+    {
+        Reference<XComponent> xComponent (xConfigurationController, UNO_QUERY);
+        if (xComponent.is())
+            xComponent->removeEventListener(static_cast<beans::XPropertyChangeListener*>(this));
+
+        xConfigurationController->removeConfigurationChangeListener(this);
+    }
+}
+
+void EventMultiplexer::Implementation::AddEventListener (
+    const Link<EventMultiplexerEvent&,void>& rCallback)
+{
+    for (auto const & i : maListeners)
+        if (i == rCallback)
+            return;
+    maListeners.push_back(rCallback);
+}
+
+void EventMultiplexer::Implementation::RemoveEventListener (
+    const Link<EventMultiplexerEvent&,void>& rCallback)
+{
+    auto iListener = std::find(maListeners.begin(), maListeners.end(), rCallback);
+    if (iListener != maListeners.end())
+        maListeners.erase(iListener);
+}
+
+void EventMultiplexer::Implementation::ConnectToController()
+{
+    // Just in case that we missed some event we now disconnect from the old
+    // controller.
+    DisconnectFromController ();
+
+    // Register at the controller of the main view shell.
+
+    // We have to store a (weak) reference to the controller so that we can
+    // unregister without having to ask the mrBase member (which at that
+    // time may be destroyed.)
+    Reference<frame::XController> xController = mrBase.GetController();
+    mxControllerWeak = mrBase.GetController();
+
+    try
+    {
+        // Listen for disposing events.
+        if (xController.is())
+        {
+            xController->addEventListener (
+                Reference<lang::XEventListener>(
+                    static_cast<XWeak*>(this), UNO_QUERY));
+            mbListeningToController = true;
+        }
+
+        // Listen to changes of certain properties.
+        Reference<beans::XPropertySet> xSet (xController, UNO_QUERY);
+        if (xSet.is())
+        {
+                try
+                {
+                    xSet->addPropertyChangeListener(aCurrentPagePropertyName, this);
+                }
+                catch (const beans::UnknownPropertyException&)
+                {
+                    SAL_WARN("sd", "EventMultiplexer::ConnectToController: CurrentPage unknown");
+                }
+
+                try
+                {
+                    xSet->addPropertyChangeListener(aEditModePropertyName, this);
+                }
+                catch (const beans::UnknownPropertyException&)
+                {
+                    SAL_WARN("sd", "EventMultiplexer::ConnectToController: IsMasterPageMode unknown");
+                }
+        }
+
+        // Listen for selection change events.
+        Reference<view::XSelectionSupplier> xSelection (xController, UNO_QUERY);
+        if (xSelection.is())
+        {
+            xSelection->addSelectionChangeListener(this);
+        }
+    }
+    catch (const lang::DisposedException&)
+    {
+        mbListeningToController = false;
+    }
+}
+
+void EventMultiplexer::Implementation::DisconnectFromController()
+{
+    if (!mbListeningToController)
+        return;
+
+    mbListeningToController = false;
+
+    Reference<frame::XController> xController = mxControllerWeak;
+
+    Reference<beans::XPropertySet> xSet (xController, UNO_QUERY);
+    // Remove the property listener.
+    if (xSet.is())
+    {
+        try
+        {
+            xSet->removePropertyChangeListener(aCurrentPagePropertyName, this);
+        }
+        catch (const beans::UnknownPropertyException&)
+        {
+            SAL_WARN("sd", "DisconnectFromController: CurrentPage unknown");
+        }
+
+        try
+        {
+            xSet->removePropertyChangeListener(aEditModePropertyName, this);
+        }
+        catch (const beans::UnknownPropertyException&)
+        {
+            SAL_WARN("sd", "DisconnectFromController: IsMasterPageMode unknown");
+        }
+    }
+
+    // Remove selection change listener.
+    Reference<view::XSelectionSupplier> xSelection (xController, UNO_QUERY);
+    if (xSelection.is())
+    {
+        xSelection->removeSelectionChangeListener(this);
+    }
+
+    // Remove listener for disposing events.
+    if (xController.is())
+    {
+        xController->removeEventListener (
+            Reference<lang::XEventListener>(static_cast<XWeak*>(this), UNO_QUERY));
+    }
+}
+
+//=====  lang::XEventListener  ================================================
+
+void SAL_CALL EventMultiplexer::Implementation::disposing (
+    const lang::EventObject& rEventObject)
+{
+    if (mbListeningToController)
+    {
+        Reference<frame::XController> xController (mxControllerWeak);
+        if (rEventObject.Source == xController)
+        {
+            mbListeningToController = false;
+        }
+    }
+
+    Reference<XConfigurationController> xConfigurationController (
+        mxConfigurationControllerWeak);
+    if (xConfigurationController.is()
+        && rEventObject.Source == xConfigurationController)
+    {
+        mxConfigurationControllerWeak.clear();
+    }
+}
+
+//=====  beans::XPropertySetListener  =========================================
+
+void SAL_CALL EventMultiplexer::Implementation::propertyChange (
+    const beans::PropertyChangeEvent& rEvent)
+{
+    if (rBHelper.bDisposed || rBHelper.bInDispose)
+    {
+        throw lang::DisposedException (
+            "SlideSorterController object has already been disposed",
+            static_cast<uno::XWeak*>(this));
+    }
+
+    if ( rEvent.PropertyName == aCurrentPagePropertyName )
+    {
+        CallListeners(EventMultiplexerEventId::CurrentPageChanged);
+    }
+    else if ( rEvent.PropertyName == aEditModePropertyName )
+    {
+        bool bIsMasterPageMode (false);
+        rEvent.NewValue >>= bIsMasterPageMode;
+        if (bIsMasterPageMode)
+            CallListeners(EventMultiplexerEventId::EditModeMaster);
+        else
+            CallListeners(EventMultiplexerEventId::EditModeNormal);
+    }
+}
+
+//===== frame::XFrameActionListener  ==========================================
+
+void SAL_CALL EventMultiplexer::Implementation::frameAction (
+    const frame::FrameActionEvent& rEvent)
+{
+    Reference<frame::XFrame> xFrame (mxFrameWeak);
+    if (rEvent.Frame != xFrame)
+        return;
+
+    switch (rEvent.Action)
+    {
+        case frame::FrameAction_COMPONENT_DETACHING:
+            DisconnectFromController();
+            CallListeners (EventMultiplexerEventId::ControllerDetached);
+            break;
+
+        case frame::FrameAction_COMPONENT_REATTACHED:
+            CallListeners (EventMultiplexerEventId::ControllerDetached);
+            DisconnectFromController();
+            ConnectToController();
+            CallListeners (EventMultiplexerEventId::ControllerAttached);
+            break;
+
+        case frame::FrameAction_COMPONENT_ATTACHED:
+            ConnectToController();
+            CallListeners (EventMultiplexerEventId::ControllerAttached);
+            break;
+
+        default:
+            break;
+    }
+}
+
+//===== view::XSelectionChangeListener ========================================
+
+void SAL_CALL EventMultiplexer::Implementation::selectionChanged (
+    const lang::EventObject& )
+{
+    CallListeners (EventMultiplexerEventId::EditViewSelection);
+}
+
+//===== drawing::framework::XConfigurationChangeListener ==================
+
+void SAL_CALL EventMultiplexer::Implementation::notifyConfigurationChange (
+    const ConfigurationChangeEvent& rEvent)
+{
+    sal_Int32 nEventType = 0;
+    rEvent.UserData >>= nEventType;
+    switch (nEventType)
+    {
+        case ResourceActivationEvent:
+            if (rEvent.ResourceId->getResourceURL().match(FrameworkHelper::msViewURLPrefix))
+            {
+                CallListeners (EventMultiplexerEventId::ViewAdded);
+
+                if (rEvent.ResourceId->isBoundToURL(
+                    FrameworkHelper::msCenterPaneURL, AnchorBindingMode_DIRECT))
+                {
+                    CallListeners (EventMultiplexerEventId::MainViewAdded);
+                }
+
+                // Add selection change listener at slide sorter.
+                if (rEvent.ResourceId->getResourceURL() == FrameworkHelper::msSlideSorterURL)
+                {
+                    slidesorter::SlideSorterViewShell* pViewShell
+                        = dynamic_cast<slidesorter::SlideSorterViewShell*>(
+                            FrameworkHelper::GetViewShell(
+                                Reference<XView>(rEvent.ResourceObject,UNO_QUERY)).get());
+                    if (pViewShell != nullptr)
+                        pViewShell->AddSelectionChangeListener (
+                            LINK(this,
+                                EventMultiplexer::Implementation,
+                                SlideSorterSelectionChangeListener));
+                }
+            }
+            break;
+
+        case ResourceDeactivationEvent:
+            if (rEvent.ResourceId->getResourceURL().match(FrameworkHelper::msViewURLPrefix))
+            {
+                if (rEvent.ResourceId->isBoundToURL(
+                    FrameworkHelper::msCenterPaneURL, AnchorBindingMode_DIRECT))
+                {
+                    CallListeners (EventMultiplexerEventId::MainViewRemoved);
+                }
+
+                // Remove selection change listener from slide sorter.  Add
+                // selection change listener at slide sorter.
+                if (rEvent.ResourceId->getResourceURL() == FrameworkHelper::msSlideSorterURL)
+                {
+                    slidesorter::SlideSorterViewShell* pViewShell
+                        = dynamic_cast<slidesorter::SlideSorterViewShell*>(
+                            FrameworkHelper::GetViewShell(
+                                Reference<XView>(rEvent.ResourceObject, UNO_QUERY)).get());
+                    if (pViewShell != nullptr)
+                        pViewShell->RemoveSelectionChangeListener (
+                            LINK(this,
+                                EventMultiplexer::Implementation,
+                                SlideSorterSelectionChangeListener));
+                }
+            }
+            break;
+
+        case ConfigurationUpdateEvent:
+            CallListeners (EventMultiplexerEventId::ConfigurationUpdated);
+            break;
+    }
+
+}
+
+void SAL_CALL EventMultiplexer::Implementation::disposing()
+{
+    CallListeners (EventMultiplexerEventId::Disposing);
+    ReleaseListeners();
+}
+
+void EventMultiplexer::Implementation::Notify (
+    SfxBroadcaster&,
+    const SfxHint& rHint)
+{
+    if (rHint.GetId() == SfxHintId::ThisIsAnSdrHint)
+    {
+        const SdrHint* pSdrHint = static_cast<const SdrHint*>(&rHint);
+        switch (pSdrHint->GetKind())
+        {
+            case SdrHintKind::ModelCleared:
+            case SdrHintKind::PageOrderChange:
+                CallListeners (EventMultiplexerEventId::PageOrder);
+                break;
+
+            case SdrHintKind::SwitchToPage:
+                CallListeners (EventMultiplexerEventId::CurrentPageChanged);
+                break;
+
+            case SdrHintKind::ObjectChange:
+                CallListeners(EventMultiplexerEventId::ShapeChanged,
+                    static_cast<const void*>(pSdrHint->GetPage()));
+                break;
+
+            case SdrHintKind::ObjectInserted:
+                CallListeners(EventMultiplexerEventId::ShapeInserted,
+                    static_cast<const void*>(pSdrHint->GetPage()));
+                break;
+
+            case SdrHintKind::ObjectRemoved:
+                CallListeners(EventMultiplexerEventId::ShapeRemoved,
+                    static_cast<const void*>(pSdrHint->GetPage()));
+                break;
+            default:
+                break;
+        }
+    }
+    else
+    {
+        if (rHint.GetId() == SfxHintId::Dying)
+            mpDocument = nullptr;
+    }
+}
+
+void EventMultiplexer::Implementation::CallListeners (
+    EventMultiplexerEventId eId,
+    void const * pUserData)
+{
+    EventMultiplexerEvent aEvent(eId, pUserData);
+    CallListeners(aEvent);
+}
+
+void EventMultiplexer::Implementation::CallListeners (EventMultiplexerEvent& rEvent)
+{
+    ListenerList aCopyListeners( maListeners );
+    for (const auto& rListener : aCopyListeners)
+    {
+        rListener.Call(rEvent);
+    }
+}
+
+IMPL_LINK_NOARG(EventMultiplexer::Implementation, SlideSorterSelectionChangeListener, LinkParamNone*, void)
+{
+    CallListeners(EventMultiplexerEventId::SlideSortedSelection);
+}
+
+//===== EventMultiplexerEvent =================================================
+
+EventMultiplexerEvent::EventMultiplexerEvent (
+    EventMultiplexerEventId eEventId,
+    const void* pUserData)
+    : meEventId(eEventId),
+      mpUserData(pUserData)
+{
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/IconCache.cxx b/sd/source/ui/tools/IconCache.cxx
new file mode 100644
index 000000000..514e513a1
--- /dev/null
+++ b/sd/source/ui/tools/IconCache.cxx
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <memory>
+#include <tools/IconCache.hxx>
+
+#include <tools/debug.hxx>
+#include <osl/doublecheckedlocking.h>
+#include <osl/getglobalmutex.hxx>
+#include <unordered_map>
+
+namespace sd {
+
+//===== IconCache::Implementation =============================================
+
+class IconCache::Implementation
+{
+private:
+    friend class IconCache;
+
+    /** This pointer holds a valid reference from first time that
+        IconCache::Instance() is called to the end of the sd module when the
+        cache is destroyed from SdGlobalResourceContainer.
+    */
+    static IconCache* s_pIconCache;
+
+    typedef std::unordered_map<OUString, Image> ImageContainer;
+    ImageContainer maContainer;
+
+    Image GetIcon(const OUString& rResourceId);
+};
+
+IconCache* IconCache::Implementation::s_pIconCache = nullptr;
+
+Image IconCache::Implementation::GetIcon(const OUString& rResourceId)
+{
+    Image aResult;
+    ImageContainer::iterator iImage = maContainer.find(rResourceId);
+    if (iImage == maContainer.end())
+    {
+        aResult = Image(StockImage::Yes, rResourceId);
+        maContainer[rResourceId] = aResult;
+    }
+    else
+        aResult = iImage->second;
+    return aResult;
+}
+
+//===== IconCache =============================================================
+
+//static
+IconCache& IconCache::Instance()
+{
+    if (Implementation::s_pIconCache == nullptr)
+    {
+        ::osl::GetGlobalMutex aMutexFunctor;
+        ::osl::MutexGuard aGuard (aMutexFunctor());
+        if (Implementation::s_pIconCache == nullptr)
+        {
+            IconCache* pCache = new IconCache ();
+            SdGlobalResourceContainer::Instance().AddResource (
+                ::std::unique_ptr<SdGlobalResource>(pCache));
+            OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
+            Implementation::s_pIconCache = pCache;
+        }
+    }
+    else
+    {
+        OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
+    }
+
+    DBG_ASSERT(Implementation::s_pIconCache != nullptr,
+        "IconCache::Instance(): instance is NULL");
+    return *Implementation::s_pIconCache;
+}
+
+Image IconCache::GetIcon(const OUString& rResourceId)
+{
+    return mpImpl->GetIcon(rResourceId);
+}
+
+IconCache::IconCache()
+    : mpImpl (new Implementation)
+{
+}
+
+IconCache::~IconCache()
+{
+    // empty
+}
+
+} // end of namespace sd
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/IdleDetection.cxx b/sd/source/ui/tools/IdleDetection.cxx
new file mode 100644
index 000000000..988bd849b
--- /dev/null
+++ b/sd/source/ui/tools/IdleDetection.cxx
@@ -0,0 +1,103 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/IdleDetection.hxx>
+
+#include <slideshow.hxx>
+#include <ViewShellBase.hxx>
+
+#include <vcl/window.hxx>
+#include <sfx2/viewfrm.hxx>
+
+#include <com/sun/star/frame/XFrame.hpp>
+#include <vcl/svapp.hxx>
+
+using namespace ::com::sun::star;
+
+namespace sd::tools {
+
+IdleState IdleDetection::GetIdleState (const vcl::Window* pWindow)
+{
+    IdleState nResult (CheckInputPending() | CheckSlideShowRunning());
+    if (pWindow != nullptr)
+        nResult |= CheckWindowPainting(*pWindow);
+    return nResult;
+}
+
+IdleState IdleDetection::CheckInputPending()
+{
+    if (Application::AnyInput(VclInputFlags::MOUSE | VclInputFlags::KEYBOARD | VclInputFlags::PAINT))
+        return IdleState::SystemEventPending;
+    else
+        return IdleState::Idle;
+}
+
+IdleState IdleDetection::CheckSlideShowRunning()
+{
+    IdleState eResult (IdleState::Idle);
+
+    // Iterate over all view frames.
+    for (SfxViewFrame* pViewFrame = SfxViewFrame::GetFirst();
+         pViewFrame!=nullptr;
+         pViewFrame = SfxViewFrame::GetNext(*pViewFrame))
+    {
+        // Ignore the current frame when it does not exist, is not valid, or
+        // is not active.
+        bool bIgnoreFrame (true);
+        uno::Reference<frame::XFrame> xFrame (pViewFrame->GetFrame().GetFrameInterface());
+        try
+        {
+            if (xFrame.is() && xFrame->isActive())
+                bIgnoreFrame = false;
+        }
+        catch (const uno::RuntimeException&)
+        {
+        }
+        if (bIgnoreFrame)
+            continue;
+
+        // Get sd::ViewShell from active frame.
+        ViewShellBase* pBase = ViewShellBase::GetViewShellBase(pViewFrame);
+        if (pBase != nullptr)
+        {
+            rtl::Reference< SlideShow > xSlideShow( SlideShow::GetSlideShow( *pBase ) );
+            if( xSlideShow.is() && xSlideShow->isRunning() )
+            {
+                if (xSlideShow->isFullScreen())
+                    eResult |= IdleState::FullScreenShowActive;
+                else
+                    eResult |= IdleState::WindowShowActive;
+            }
+        }
+    }
+
+    return eResult;
+}
+
+IdleState IdleDetection::CheckWindowPainting (const vcl::Window& rWindow)
+{
+    if (rWindow.IsInPaint())
+        return IdleState::WindowPainting;
+    else
+        return IdleState::Idle;
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/PreviewRenderer.cxx b/sd/source/ui/tools/PreviewRenderer.cxx
new file mode 100644
index 000000000..34f394737
--- /dev/null
+++ b/sd/source/ui/tools/PreviewRenderer.cxx
@@ -0,0 +1,527 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <PreviewRenderer.hxx>
+
+#include <DrawDocShell.hxx>
+#include <drawdoc.hxx>
+#include <drawview.hxx>
+#include <sdpage.hxx>
+#include <ViewShell.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/settings.hxx>
+
+#include <svx/svdpagv.hxx>
+#include <svx/svdoutl.hxx>
+#include <editeng/eeitem.hxx>
+#include <editeng/editstat.hxx>
+#include <vcl/svapp.hxx>
+#include <tools/diagnose_ex.h>
+#include <svx/sdr/contact/viewobjectcontact.hxx>
+#include <svx/sdr/contact/viewcontact.hxx>
+
+#include <memory>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace sd {
+
+const int PreviewRenderer::snSubstitutionTextSize = 11;
+const int PreviewRenderer::snFrameWidth = 1;
+
+namespace {
+    /** This incarnation of the ViewObjectContactRedirector filters away all
+        PageObj objects, unconditionally.
+    */
+    class ViewRedirector : public sdr::contact::ViewObjectContactRedirector
+    {
+    public:
+        ViewRedirector();
+
+        virtual drawinglayer::primitive2d::Primitive2DContainer createRedirectedPrimitive2DSequence(
+            const sdr::contact::ViewObjectContact& rOriginal,
+            const sdr::contact::DisplayInfo& rDisplayInfo) override;
+    };
+}
+
+//===== PreviewRenderer =======================================================
+
+PreviewRenderer::PreviewRenderer (
+    const bool bHasFrame)
+    : mpPreviewDevice (VclPtr<VirtualDevice>::Create()),
+      mpDocShellOfView(nullptr),
+      maFrameColor (svtools::ColorConfig().GetColorValue(svtools::DOCBOUNDARIES).nColor),
+      mbHasFrame(bHasFrame)
+{
+    mpPreviewDevice->SetBackground(Wallpaper(
+        Application::GetSettings().GetStyleSettings().GetWindowColor()));
+}
+
+PreviewRenderer::~PreviewRenderer()
+{
+    if (mpDocShellOfView != nullptr)
+        EndListening (*mpDocShellOfView);
+}
+
+Image PreviewRenderer::RenderPage (
+    const SdPage* pPage,
+    const sal_Int32 nWidth)
+{
+    if (pPage != nullptr)
+    {
+        const Size aPageModelSize (pPage->GetSize());
+        const double nAspectRatio (
+            double(aPageModelSize.Width()) / double(aPageModelSize.Height()));
+        const sal_Int32 nFrameWidth (mbHasFrame ? snFrameWidth : 0);
+        const sal_Int32 nHeight (sal::static_int_cast<sal_Int32>(
+            (nWidth - 2*nFrameWidth) / nAspectRatio + 2*nFrameWidth + 0.5));
+        return RenderPage (
+            pPage,
+            Size(nWidth,nHeight),
+            false/*bObeyHighContrastMode*/);
+    }
+    else
+        return Image();
+}
+
+Image PreviewRenderer::RenderPage (
+    const SdPage* pPage,
+    Size aPixelSize,
+    const bool bObeyHighContrastMode,
+    const bool bDisplayPresentationObjects)
+{
+    Image aPreview;
+
+    if (pPage != nullptr)
+    {
+        try
+        {
+            if (Initialize(pPage, aPixelSize, bObeyHighContrastMode))
+            {
+                PaintPage(pPage, bDisplayPresentationObjects);
+                PaintSubstitutionText("");
+                PaintFrame();
+
+                Size aSize (mpPreviewDevice->GetOutputSizePixel());
+                aPreview = Image(mpPreviewDevice->GetBitmapEx(
+                    mpPreviewDevice->PixelToLogic(Point(0,0)),
+                    mpPreviewDevice->PixelToLogic(aSize)));
+
+                mpView->HideSdrPage();
+            }
+        }
+        catch (const css::uno::Exception&)
+        {
+            DBG_UNHANDLED_EXCEPTION("sd.tools");
+        }
+    }
+
+    return aPreview;
+}
+
+Image PreviewRenderer::RenderSubstitution (
+    const Size& rPreviewPixelSize,
+    const OUString& rSubstitutionText)
+{
+    Image aPreview;
+
+    try
+    {
+        // Set size.
+        mpPreviewDevice->SetOutputSizePixel(rPreviewPixelSize);
+
+        // Adjust contrast mode.
+        const bool bUseContrast (
+            Application::GetSettings().GetStyleSettings().GetHighContrastMode());
+        mpPreviewDevice->SetDrawMode (bUseContrast
+            ? sd::OUTPUT_DRAWMODE_CONTRAST
+            : sd::OUTPUT_DRAWMODE_COLOR);
+
+        // Set a map mode that makes a typical substitution text completely
+        // visible.
+        MapMode aMapMode (mpPreviewDevice->GetMapMode());
+        aMapMode.SetMapUnit(MapUnit::Map100thMM);
+        Fraction aFinalScale(25 * rPreviewPixelSize.Width(), 28000);
+        aMapMode.SetScaleX(aFinalScale);
+        aMapMode.SetScaleY(aFinalScale);
+        const sal_Int32 nFrameWidth (mbHasFrame ? snFrameWidth : 0);
+        aMapMode.SetOrigin(mpPreviewDevice->PixelToLogic(
+            Point(nFrameWidth,nFrameWidth),aMapMode));
+        mpPreviewDevice->SetMapMode (aMapMode);
+
+        // Clear the background.
+        const ::tools::Rectangle aPaintRectangle (
+            Point(0,0),
+            mpPreviewDevice->GetOutputSizePixel());
+        mpPreviewDevice->EnableMapMode(false);
+        mpPreviewDevice->SetLineColor();
+        svtools::ColorConfig aColorConfig;
+        mpPreviewDevice->SetFillColor(aColorConfig.GetColorValue(svtools::DOCCOLOR).nColor);
+        mpPreviewDevice->DrawRect (aPaintRectangle);
+        mpPreviewDevice->EnableMapMode();
+
+        // Paint substitution text and a frame around it.
+        PaintSubstitutionText (rSubstitutionText);
+        PaintFrame();
+
+        const Size aSize (mpPreviewDevice->GetOutputSizePixel());
+        aPreview = Image(mpPreviewDevice->GetBitmapEx(
+            mpPreviewDevice->PixelToLogic(Point(0,0)),
+            mpPreviewDevice->PixelToLogic(aSize)));
+    }
+    catch (const css::uno::Exception&)
+    {
+        DBG_UNHANDLED_EXCEPTION("sd.tools");
+    }
+
+    return aPreview;
+}
+
+bool PreviewRenderer::Initialize (
+    const SdPage* pPage,
+    const Size& rPixelSize,
+    const bool bObeyHighContrastMode)
+{
+    if (!pPage)
+        return false;
+
+    SetupOutputSize(*pPage, rPixelSize);
+    SdDrawDocument& rDocument(static_cast< SdDrawDocument& >(pPage->getSdrModelFromSdrPage()));
+    DrawDocShell* pDocShell = rDocument.GetDocSh();
+
+    if (!pDocShell)
+        return false;
+
+    // Create view
+    ProvideView (pDocShell);
+    if (mpView == nullptr)
+        return false;
+
+    // Adjust contrast mode.
+    bool bUseContrast (bObeyHighContrastMode
+        && Application::GetSettings().GetStyleSettings().GetHighContrastMode());
+    mpPreviewDevice->SetDrawMode (bUseContrast
+        ? sd::OUTPUT_DRAWMODE_CONTRAST
+        : sd::OUTPUT_DRAWMODE_COLOR);
+    mpPreviewDevice->SetSettings(Application::GetSettings());
+
+    // Tell the view to show the given page.
+    SdPage* pNonConstPage = const_cast<SdPage*>(pPage);
+    if (pPage->IsMasterPage())
+    {
+        mpView->ShowSdrPage(mpView->GetModel()->GetMasterPage(pPage->GetPageNum()));
+    }
+    else
+    {
+        mpView->ShowSdrPage(pNonConstPage);
+    }
+
+    // Make sure that a page view exists.
+    SdrPageView* pPageView = mpView->GetSdrPageView();
+
+    if (pPageView == nullptr)
+        return false;
+
+    // #i121224# No need to set SetApplicationBackgroundColor (which is the color
+    // of the area 'behind' the page (formerly called 'Wiese') since the page previews
+    // produced exactly cover the page's area, so it would never be visible. What
+    // needs to be set is the ApplicationDocumentColor which is derived from
+    // svtools::DOCCOLOR normally
+    Color aApplicationDocumentColor;
+
+    if (pPageView->GetApplicationDocumentColor() == COL_AUTO)
+    {
+        svtools::ColorConfig aColorConfig;
+        aApplicationDocumentColor = aColorConfig.GetColorValue( svtools::DOCCOLOR ).nColor;
+    }
+    else
+    {
+        aApplicationDocumentColor = pPageView->GetApplicationDocumentColor();
+    }
+
+    pPageView->SetApplicationDocumentColor(aApplicationDocumentColor);
+    SdrOutliner& rOutliner(rDocument.GetDrawOutliner());
+    rOutliner.SetBackgroundColor(aApplicationDocumentColor);
+    rOutliner.SetDefaultLanguage(rDocument.GetLanguage(EE_CHAR_LANGUAGE));
+    mpPreviewDevice->SetBackground(Wallpaper(aApplicationDocumentColor));
+    mpPreviewDevice->Erase();
+
+    return true;
+}
+
+void PreviewRenderer::PaintPage (
+    const SdPage* pPage,
+    const bool bDisplayPresentationObjects)
+{
+    // Paint the page.
+    ::tools::Rectangle aPaintRectangle (Point(0,0), pPage->GetSize());
+    vcl::Region aRegion (aPaintRectangle);
+
+    // Turn off online spelling and redlining.
+    SdrOutliner* pOutliner = nullptr;
+    EEControlBits nSavedControlWord = EEControlBits::NONE;
+    if (mpDocShellOfView!=nullptr && mpDocShellOfView->GetDoc()!=nullptr)
+    {
+        pOutliner = &mpDocShellOfView->GetDoc()->GetDrawOutliner();
+        nSavedControlWord = pOutliner->GetControlWord();
+        pOutliner->SetControlWord(nSavedControlWord & ~EEControlBits::ONLINESPELLING);
+    }
+
+    // Use a special redirector to prevent PresObj shapes from being painted.
+    std::unique_ptr<ViewRedirector> pRedirector;
+    if ( ! bDisplayPresentationObjects)
+        pRedirector.reset(new ViewRedirector());
+
+    try
+    {
+        mpView->CompleteRedraw(mpPreviewDevice.get(), aRegion, pRedirector.get());
+    }
+    catch (const css::uno::Exception&)
+    {
+        DBG_UNHANDLED_EXCEPTION("sd.tools");
+    }
+
+    // Restore the previous online spelling and redlining states.
+    if (pOutliner != nullptr)
+        pOutliner->SetControlWord(nSavedControlWord);
+}
+
+void PreviewRenderer::PaintSubstitutionText (const OUString& rSubstitutionText)
+{
+    if (rSubstitutionText.isEmpty())
+        return;
+
+    // Set the font size.
+    const vcl::Font& rOriginalFont (mpPreviewDevice->GetFont());
+    vcl::Font aFont (mpPreviewDevice->GetSettings().GetStyleSettings().GetAppFont());
+    sal_Int32 nHeight (mpPreviewDevice->PixelToLogic(Size(0,snSubstitutionTextSize)).Height());
+    aFont.SetFontHeight(nHeight);
+    mpPreviewDevice->SetFont (aFont);
+
+    // Paint the substitution text.
+    ::tools::Rectangle aTextBox (
+        Point(0,0),
+        mpPreviewDevice->PixelToLogic(
+            mpPreviewDevice->GetOutputSizePixel()));
+    DrawTextFlags const nTextStyle =
+        DrawTextFlags::Center
+        | DrawTextFlags::VCenter
+        | DrawTextFlags::MultiLine
+        | DrawTextFlags::WordBreak;
+    mpPreviewDevice->DrawText (aTextBox, rSubstitutionText, nTextStyle);
+
+    // Restore the font.
+    mpPreviewDevice->SetFont (rOriginalFont);
+}
+
+void PreviewRenderer::PaintFrame()
+{
+    if (mbHasFrame)
+    {
+        // Paint a frame around the preview.
+        ::tools::Rectangle aPaintRectangle (
+            Point(0,0),
+            mpPreviewDevice->GetOutputSizePixel());
+        mpPreviewDevice->EnableMapMode(false);
+        mpPreviewDevice->SetLineColor(maFrameColor);
+        mpPreviewDevice->SetFillColor();
+        mpPreviewDevice->DrawRect(aPaintRectangle);
+        mpPreviewDevice->EnableMapMode();
+     }
+}
+
+void PreviewRenderer::SetupOutputSize (
+    const SdPage& rPage,
+    const Size& rFramePixelSize)
+{
+    // First set the map mode to some arbitrary scale that is numerically
+    // stable.
+    MapMode aMapMode (mpPreviewDevice->GetMapMode());
+    aMapMode.SetMapUnit(MapUnit::MapPixel);
+
+    // Adapt it to the desired width.
+    const Size aPageModelSize (rPage.GetSize());
+    if (!aPageModelSize.IsEmpty())
+    {
+        const sal_Int32 nFrameWidth (mbHasFrame ? snFrameWidth : 0);
+        aMapMode.SetScaleX(
+            Fraction(rFramePixelSize.Width()-2*nFrameWidth-1, aPageModelSize.Width()));
+        aMapMode.SetScaleY(
+            Fraction(rFramePixelSize.Height()-2*nFrameWidth-1, aPageModelSize.Height()));
+        aMapMode.SetOrigin(mpPreviewDevice->PixelToLogic(Point(nFrameWidth,nFrameWidth),aMapMode));
+    }
+    else
+    {
+        // We should never get here.
+        OSL_ASSERT(false);
+        aMapMode.SetScaleX(Fraction(1.0));
+        aMapMode.SetScaleY(Fraction(1.0));
+    }
+    mpPreviewDevice->SetMapMode (aMapMode);
+    mpPreviewDevice->SetOutputSizePixel(rFramePixelSize);
+}
+
+void PreviewRenderer::ProvideView (DrawDocShell* pDocShell)
+{
+    if (pDocShell != mpDocShellOfView)
+    {
+        // Destroy the view that is connected to the current doc shell.
+        mpView.reset();
+
+        // Switch our attention, i.e. listening for DYING events, to
+        // the new doc shell.
+        if (mpDocShellOfView != nullptr)
+            EndListening (*mpDocShellOfView);
+        mpDocShellOfView = pDocShell;
+        if (mpDocShellOfView != nullptr)
+            StartListening (*mpDocShellOfView);
+    }
+    if (mpView == nullptr)
+    {
+        mpView.reset (new DrawView (pDocShell, mpPreviewDevice.get(), nullptr));
+    }
+    mpView->SetPreviewRenderer(true);
+#if 1
+    mpView->SetPageVisible(false);
+    mpView->SetPageBorderVisible();
+    mpView->SetBordVisible(false);
+    mpView->SetGridVisible(false);
+    mpView->SetHlplVisible(false);
+    mpView->SetGlueVisible(false);
+
+#else
+    // This works in the slide sorter but prevents the master page
+    // background being painted in the list of current master pages in the
+    // task manager.
+    mpView->SetPagePaintingAllowed(false);
+#endif
+}
+
+Image PreviewRenderer::ScaleBitmap (
+    const BitmapEx& rBitmapEx,
+    int nWidth)
+{
+    Image aPreview;
+
+    do
+    {
+        // Adjust contrast mode.
+        bool bUseContrast = Application::GetSettings().GetStyleSettings().
+            GetHighContrastMode();
+        mpPreviewDevice->SetDrawMode (bUseContrast
+            ? sd::OUTPUT_DRAWMODE_CONTRAST
+            : sd::OUTPUT_DRAWMODE_COLOR);
+
+        // Set output size.
+        Size aSize (rBitmapEx.GetSizePixel());
+        if (aSize.Width() <= 0)
+            break;
+        Size aFrameSize (
+            nWidth,
+            static_cast<long>((nWidth*1.0 * aSize.Height()) / aSize.Width() + 0.5));
+        Size aPreviewSize (aFrameSize.Width()-2,aFrameSize.Height()-2);
+        MapMode aMapMode (mpPreviewDevice->GetMapMode());
+        aMapMode.SetMapUnit(MapUnit::MapPixel);
+        aMapMode.SetOrigin (Point());
+        aMapMode.SetScaleX (Fraction(1.0));
+        aMapMode.SetScaleY (Fraction(1.0));
+        mpPreviewDevice->SetMapMode (aMapMode);
+        mpPreviewDevice->SetOutputSize (aFrameSize);
+
+        // Paint a frame around the preview.
+        mpPreviewDevice->SetLineColor (maFrameColor);
+        mpPreviewDevice->SetFillColor ();
+        mpPreviewDevice->DrawRect (::tools::Rectangle(Point(0,0), aFrameSize));
+
+        // Paint the bitmap scaled to the desired width.
+        BitmapEx aScaledBitmap(rBitmapEx);
+        aScaledBitmap.Scale (aPreviewSize, BmpScaleFlag::BestQuality);
+        mpPreviewDevice->DrawBitmapEx (
+            Point(1,1),
+            aPreviewSize,
+            aScaledBitmap);
+
+        // Get the resulting bitmap.
+        aPreview = Image(mpPreviewDevice->GetBitmapEx(Point(0,0), aFrameSize));
+    }
+    while (false);
+
+    return aPreview;
+}
+
+void PreviewRenderer::Notify(SfxBroadcaster&, const SfxHint& rHint)
+{
+    if (!mpDocShellOfView)
+        return;
+
+    if (rHint.GetId() == SfxHintId::Dying)
+    {
+        // The doc shell is dying.  Our view uses its item pool and
+        // has to be destroyed as well.  The next call to
+        // ProvideView will create a new one (for another
+        // doc shell, of course.)
+        mpView.reset();
+        mpDocShellOfView = nullptr;
+    }
+}
+
+//===== ViewRedirector ========================================================
+
+namespace {
+
+ViewRedirector::ViewRedirector()
+{
+}
+
+drawinglayer::primitive2d::Primitive2DContainer ViewRedirector::createRedirectedPrimitive2DSequence(
+    const sdr::contact::ViewObjectContact& rOriginal,
+    const sdr::contact::DisplayInfo& rDisplayInfo)
+{
+    SdrObject* pObject = rOriginal.GetViewContact().TryToGetSdrObject();
+
+    if (pObject==nullptr || pObject->getSdrPageFromSdrObject() == nullptr)
+    {
+        // not a SdrObject visualisation (maybe e.g. page) or no page
+        return sdr::contact::ViewObjectContactRedirector::createRedirectedPrimitive2DSequence(
+            rOriginal,
+            rDisplayInfo);
+    }
+
+    const bool bDoCreateGeometry (pObject->getSdrPageFromSdrObject()->checkVisibility( rOriginal, rDisplayInfo, true));
+
+    if ( ! bDoCreateGeometry
+        && (pObject->GetObjInventor() != SdrInventor::Default || pObject->GetObjIdentifier() != OBJ_PAGE))
+    {
+        return drawinglayer::primitive2d::Primitive2DContainer();
+    }
+
+    if (pObject->IsEmptyPresObj())
+        return drawinglayer::primitive2d::Primitive2DContainer();
+
+    return sdr::contact::ViewObjectContactRedirector::createRedirectedPrimitive2DSequence(
+        rOriginal,
+        rDisplayInfo);
+}
+
+} // end of anonymous namespace
+
+} // end of namespace ::sd
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/PropertySet.cxx b/sd/source/ui/tools/PropertySet.cxx
new file mode 100644
index 000000000..057b7dd96
--- /dev/null
+++ b/sd/source/ui/tools/PropertySet.cxx
@@ -0,0 +1,158 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/PropertySet.hxx>
+#include <algorithm>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace sd::tools {
+
+PropertySet::PropertySet()
+    : PropertySetInterfaceBase(m_aMutex),
+      mpChangeListeners(new ChangeListenerContainer)
+{
+}
+
+PropertySet::~PropertySet()
+{
+}
+
+void SAL_CALL PropertySet::disposing()
+{
+}
+
+//----- XPropertySet ----------------------------------------------------------
+
+Reference<beans::XPropertySetInfo> SAL_CALL PropertySet::getPropertySetInfo()
+{
+    return nullptr;
+}
+
+void SAL_CALL PropertySet::setPropertyValue (
+    const OUString& rsPropertyName,
+    const css::uno::Any& rsPropertyValue)
+{
+    ThrowIfDisposed();
+
+    Any aOldValue (SetPropertyValue(rsPropertyName,rsPropertyValue));
+    if (aOldValue == rsPropertyValue)
+        return;
+
+    // Inform listeners that are registered specifically for the
+    // property and those registered for any property.
+    beans::PropertyChangeEvent aEvent(
+        static_cast<XWeak*>(this),
+        rsPropertyName,
+        false,
+        -1,
+        aOldValue,
+        rsPropertyValue);
+    CallListeners(rsPropertyName, aEvent);
+    CallListeners(OUString(), aEvent);
+}
+
+Any SAL_CALL PropertySet::getPropertyValue (const OUString& rsPropertyName)
+{
+    ThrowIfDisposed();
+
+    return GetPropertyValue(rsPropertyName);
+}
+
+void SAL_CALL PropertySet::addPropertyChangeListener (
+    const OUString& rsPropertyName,
+    const css::uno::Reference<css::beans::XPropertyChangeListener>& rxListener)
+{
+    if ( ! rxListener.is())
+        throw lang::IllegalArgumentException();
+
+    if (rBHelper.bDisposed || rBHelper.bInDispose)
+        return;
+
+    mpChangeListeners->emplace(rsPropertyName, rxListener);
+}
+
+void SAL_CALL PropertySet::removePropertyChangeListener (
+    const OUString& rsPropertyName,
+    const css::uno::Reference<css::beans::XPropertyChangeListener>& rxListener)
+{
+    ::std::pair<ChangeListenerContainer::iterator,ChangeListenerContainer::iterator>
+        aRange (mpChangeListeners->equal_range(rsPropertyName));
+
+    ChangeListenerContainer::iterator iListener (
+        ::std::find_if(
+            aRange.first,
+            aRange.second,
+            [&rxListener] (const ChangeListenerContainer::value_type& listener) {
+                return listener.second == rxListener;
+            }));
+
+    if (iListener == mpChangeListeners->end())
+    {
+        throw lang::IllegalArgumentException();
+    }
+
+    mpChangeListeners->erase(iListener);
+
+}
+
+void SAL_CALL PropertySet::addVetoableChangeListener (
+    const OUString&,
+    const css::uno::Reference<css::beans::XVetoableChangeListener>&)
+{
+    // Constraint properties are not supported and thus no vetoable
+    // listeners.
+}
+
+void SAL_CALL PropertySet::removeVetoableChangeListener (
+    const OUString&,
+    const css::uno::Reference<css::beans::XVetoableChangeListener>&)
+{
+    // Constraint properties are not supported and thus no vetoable
+    // listeners.
+}
+
+void PropertySet::CallListeners (
+    const OUString& rsPropertyName,
+    const beans::PropertyChangeEvent& rEvent)
+{
+    ::std::pair<ChangeListenerContainer::iterator,ChangeListenerContainer::iterator>
+        aRange (mpChangeListeners->equal_range(rsPropertyName));
+    ChangeListenerContainer::const_iterator iListener;
+    for (iListener=aRange.first; iListener!=aRange.second; ++iListener)
+    {
+        if (iListener->second.is())
+            iListener->second->propertyChange(rEvent);
+    }
+}
+
+void PropertySet::ThrowIfDisposed()
+{
+    if (rBHelper.bDisposed || rBHelper.bInDispose)
+    {
+        throw lang::DisposedException (
+                "PropertySet object has already been disposed",
+            static_cast<uno::XWeak*>(this));
+    }
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/SdGlobalResourceContainer.cxx b/sd/source/ui/tools/SdGlobalResourceContainer.cxx
new file mode 100644
index 000000000..da46c1d98
--- /dev/null
+++ b/sd/source/ui/tools/SdGlobalResourceContainer.cxx
@@ -0,0 +1,194 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/SdGlobalResourceContainer.hxx>
+
+#include <../cache/SlsCacheConfiguration.hxx>
+
+#include <comphelper/processfactory.hxx>
+#include <comphelper/unique_disposing_ptr.hxx>
+
+#include <com/sun/star/frame/Desktop.hpp>
+
+#include <rtl/instance.hxx>
+#include <sal/log.hxx>
+#include <tools/debug.hxx>
+
+#include <algorithm>
+#include <memory>
+#include <vector>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+
+namespace sd {
+
+class SdGlobalResourceContainerInstance
+    : public comphelper::unique_disposing_solar_mutex_reset_ptr<SdGlobalResourceContainer>
+{
+public:
+    SdGlobalResourceContainerInstance()
+        : comphelper::unique_disposing_solar_mutex_reset_ptr<SdGlobalResourceContainer>(
+            uno::Reference<lang::XComponent>(frame::Desktop::create(comphelper::getProcessComponentContext()), uno::UNO_QUERY_THROW),
+            new SdGlobalResourceContainer, true)
+    {
+    }
+};
+
+namespace {
+
+struct theSdGlobalResourceContainerInstance : public rtl::Static<SdGlobalResourceContainerInstance, theSdGlobalResourceContainerInstance> {};
+
+} // namespace
+
+//===== SdGlobalResourceContainer::Implementation =============================
+
+class SdGlobalResourceContainer::Implementation
+{
+private:
+    friend class SdGlobalResourceContainer;
+
+    ::osl::Mutex maMutex;
+
+    /** All instances of SdGlobalResource in this vector are owned by the
+        container and will be destroyed when the container is destroyed.
+    */
+    std::vector<std::unique_ptr<SdGlobalResource>> maResources;
+
+    typedef ::std::vector<std::shared_ptr<SdGlobalResource> > SharedResourceList;
+    SharedResourceList maSharedResources;
+
+    typedef ::std::vector<Reference<XInterface> > XInterfaceResourceList;
+    XInterfaceResourceList maXInterfaceResources;
+};
+
+// static
+SdGlobalResourceContainer& SdGlobalResourceContainer::Instance()
+{
+    SdGlobalResourceContainer *const pRet(theSdGlobalResourceContainerInstance::get().get());
+    assert(pRet); // error if it has been deleted and is null
+    return *pRet;
+}
+
+//===== SdGlobalResourceContainer =============================================
+
+void SdGlobalResourceContainer::AddResource (
+    ::std::unique_ptr<SdGlobalResource> pResource)
+{
+    ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+    assert( std::none_of(
+                mpImpl->maResources.begin(),
+                mpImpl->maResources.end(),
+                [&](const std::unique_ptr<SdGlobalResource>& p) { return p == pResource; })
+            && "duplicate resource?");
+
+    mpImpl->maResources.push_back(std::move(pResource));
+}
+
+void SdGlobalResourceContainer::AddResource (
+    const std::shared_ptr<SdGlobalResource>& pResource)
+{
+    ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+    Implementation::SharedResourceList::iterator iResource = ::std::find (
+        mpImpl->maSharedResources.begin(),
+        mpImpl->maSharedResources.end(),
+        pResource);
+    if (iResource == mpImpl->maSharedResources.end())
+        mpImpl->maSharedResources.push_back(pResource);
+    else
+    {
+        SAL_WARN ("sd.tools",
+            "SdGlobalResourceContainer:AddResource(): Resource added twice.");
+    }
+}
+
+void SdGlobalResourceContainer::AddResource (const Reference<XInterface>& rxResource)
+{
+    ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+    Implementation::XInterfaceResourceList::iterator iResource = ::std::find (
+        mpImpl->maXInterfaceResources.begin(),
+        mpImpl->maXInterfaceResources.end(),
+        rxResource);
+    if (iResource == mpImpl->maXInterfaceResources.end())
+        mpImpl->maXInterfaceResources.push_back(rxResource);
+    else
+    {
+        SAL_WARN ("sd.tools",
+            "SdGlobalResourceContainer:AddResource(): Resource added twice.");
+    }
+}
+
+SdGlobalResourceContainer::SdGlobalResourceContainer()
+    : mpImpl (new SdGlobalResourceContainer::Implementation)
+{
+}
+
+SdGlobalResourceContainer::~SdGlobalResourceContainer()
+{
+    ::osl::MutexGuard aGuard (mpImpl->maMutex);
+
+    // Release the resources in reversed order of their addition to the
+    // container.  This is because a resource A added before resource B
+    // may have been created due to a request of B.  Thus B depends on A and
+    // should be destroyed first.
+    for (auto iResource = mpImpl->maResources.rbegin();
+         iResource != mpImpl->maResources.rend();
+         ++iResource)
+    {
+        iResource->reset();
+    }
+
+
+    // The SharedResourceList has not to be released manually.  We just
+    // assert resources that are still held by someone other than us.
+    Implementation::SharedResourceList::reverse_iterator iSharedResource;
+    for (iSharedResource = mpImpl->maSharedResources.rbegin();
+         iSharedResource != mpImpl->maSharedResources.rend();
+         ++iSharedResource)
+    {
+        if (iSharedResource->use_count() > 1)
+        {
+            SdGlobalResource* pResource = iSharedResource->get();
+            SAL_INFO(
+                "sd.tools", pResource << " " << iSharedResource->use_count());
+            DBG_ASSERT(iSharedResource->use_count() == 1,
+                "SdGlobalResource still held in ~SdGlobalResourceContainer");
+        }
+    }
+
+    Implementation::XInterfaceResourceList::reverse_iterator iXInterfaceResource;
+    for (iXInterfaceResource = mpImpl->maXInterfaceResources.rbegin();
+         iXInterfaceResource != mpImpl->maXInterfaceResources.rend();
+         ++iXInterfaceResource)
+    {
+        Reference<lang::XComponent> xComponent (*iXInterfaceResource, UNO_QUERY);
+        *iXInterfaceResource = nullptr;
+        if (xComponent.is())
+            xComponent->dispose();
+    }
+
+    sd::slidesorter::cache::CacheConfiguration::Shutdown();
+}
+
+} // end of namespace sd
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/SlotStateListener.cxx b/sd/source/ui/tools/SlotStateListener.cxx
new file mode 100644
index 000000000..5fb078f14
--- /dev/null
+++ b/sd/source/ui/tools/SlotStateListener.cxx
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/SlotStateListener.hxx>
+#include <com/sun/star/frame/XDispatchProvider.hpp>
+#include <com/sun/star/frame/XDispatch.hpp>
+#include <com/sun/star/util/URLTransformer.hpp>
+#include <com/sun/star/util/XURLTransformer.hpp>
+
+#include <comphelper/processfactory.hxx>
+
+using namespace ::com::sun::star;
+
+namespace sd::tools {
+
+SlotStateListener::SlotStateListener (
+    Link<const OUString&,void> const & rCallback,
+    const uno::Reference<frame::XDispatchProvider>& rxDispatchProvider,
+    const OUString& rSlotName)
+    : SlotStateListenerInterfaceBase(maMutex),
+      maCallback(),
+      mxDispatchProviderWeak(nullptr)
+{
+    SetCallback(rCallback);
+    ConnectToDispatchProvider(rxDispatchProvider);
+    ObserveSlot(rSlotName);
+}
+
+SlotStateListener::~SlotStateListener()
+{
+    ReleaseListeners();
+}
+
+void SlotStateListener::SetCallback (const Link<const OUString&,void>& rCallback)
+{
+    ThrowIfDisposed();
+
+    maCallback = rCallback;
+}
+
+void SlotStateListener::ConnectToDispatchProvider (
+    const uno::Reference<frame::XDispatchProvider>& rxDispatchProvider)
+{
+    ThrowIfDisposed();
+
+    // When we are listening to state changes of slots of another frame then
+    // release these listeners first.
+    if ( ! maRegisteredURLList.empty())
+        ReleaseListeners();
+
+    mxDispatchProviderWeak = rxDispatchProvider;
+}
+
+void SlotStateListener::ObserveSlot (const OUString& rSlotName)
+{
+    ThrowIfDisposed();
+
+    if (maCallback.IsSet())
+    {
+        // Connect the state change listener.
+        util::URL aURL (MakeURL(rSlotName));
+        uno::Reference<frame::XDispatch> xDispatch (GetDispatch(aURL));
+        if (xDispatch.is())
+        {
+            maRegisteredURLList.push_back(aURL);
+            xDispatch->addStatusListener(this,aURL);
+        }
+    }
+}
+
+void SlotStateListener::disposing()
+{
+    ReleaseListeners();
+    mxDispatchProviderWeak = uno::WeakReference<frame::XDispatchProvider>(nullptr);
+    maCallback = Link<const OUString&,void>();
+}
+
+util::URL SlotStateListener::MakeURL (const OUString& rSlotName)
+{
+    util::URL aURL;
+    aURL.Complete = rSlotName;
+
+    uno::Reference<util::XURLTransformer> xTransformer(util::URLTransformer::create(::comphelper::getProcessComponentContext()));
+    xTransformer->parseStrict(aURL);
+
+    return aURL;
+}
+
+uno::Reference<frame::XDispatch>
+    SlotStateListener::GetDispatch (const util::URL& rURL) const
+{
+    uno::Reference<frame::XDispatch> xDispatch;
+
+    uno::Reference<frame::XDispatchProvider> xDispatchProvider (mxDispatchProviderWeak);
+    if (xDispatchProvider.is())
+        xDispatch = xDispatchProvider->queryDispatch(rURL, OUString(), 0);
+
+    return xDispatch;
+}
+
+void SlotStateListener::statusChanged (
+    const frame::FeatureStateEvent& rState)
+{
+    ThrowIfDisposed();
+    OUString sSlotName (rState.FeatureURL.Complete);
+    maCallback.Call(sSlotName);
+}
+
+void SlotStateListener::ReleaseListeners()
+{
+    for (const auto& rURL : maRegisteredURLList)
+    {
+        uno::Reference<frame::XDispatch> xDispatch (GetDispatch(rURL));
+        if (xDispatch.is())
+        {
+            xDispatch->removeStatusListener(this,rURL);
+        }
+    }
+}
+
+//=====  lang::XEventListener  ================================================
+
+void SAL_CALL SlotStateListener::disposing (
+    const lang::EventObject& )
+{
+}
+
+void SlotStateListener::ThrowIfDisposed()
+{
+    if (rBHelper.bDisposed || rBHelper.bInDispose)
+    {
+        throw lang::DisposedException ("SlideSorterController object has already been disposed",
+            static_cast<uno::XWeak*>(this));
+    }
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sd/source/ui/tools/TimerBasedTaskExecution.cxx b/sd/source/ui/tools/TimerBasedTaskExecution.cxx
new file mode 100644
index 000000000..8ae7fddad
--- /dev/null
+++ b/sd/source/ui/tools/TimerBasedTaskExecution.cxx
@@ -0,0 +1,132 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/TimerBasedTaskExecution.hxx>
+#include <tools/AsynchronousTask.hxx>
+#include <tools/time.hxx>
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+#include <memory>
+
+namespace sd::tools {
+
+/** Used by the shared_ptr instead of the private destructor.
+*/
+class TimerBasedTaskExecution::Deleter
+{
+public:
+    void operator() (TimerBasedTaskExecution* pObject)
+    {
+        delete pObject;
+    }
+};
+
+std::shared_ptr<TimerBasedTaskExecution> TimerBasedTaskExecution::Create (
+    const std::shared_ptr<AsynchronousTask>& rpTask,
+    sal_uInt32 nMillisecondsBetweenSteps,
+    sal_uInt32 nMaxTimePerStep)
+{
+    std::shared_ptr<TimerBasedTaskExecution> pExecution(
+        new TimerBasedTaskExecution(rpTask,nMillisecondsBetweenSteps,nMaxTimePerStep),
+        Deleter());
+    // Let the new object have a shared_ptr to itself, so that it can
+    // release itself when the AsynchronousTask has been executed
+    // completely.
+    if (pExecution->mpTask != nullptr)
+        pExecution->mpSelf = pExecution;
+    return pExecution;
+}
+
+void TimerBasedTaskExecution::Release()
+{
+    maTimer.Stop();
+    mpSelf.reset();
+}
+
+//static
+void TimerBasedTaskExecution::ReleaseTask (
+    const std::weak_ptr<TimerBasedTaskExecution>& rpExecution)
+{
+    if (  rpExecution.expired())
+        return;
+
+    try
+    {
+        std::shared_ptr<tools::TimerBasedTaskExecution> pExecution (rpExecution);
+        pExecution->Release();
+    }
+    catch (const std::bad_weak_ptr&)
+    {
+        // When a bad_weak_ptr has been thrown then the object pointed
+        // to by rpTask has been released right after we checked that it
+        // still existed.  Too bad, but that means, that we have nothing
+        // more do.
+    }
+}
+
+TimerBasedTaskExecution::TimerBasedTaskExecution (
+    const std::shared_ptr<AsynchronousTask>& rpTask,
+    sal_uInt32 nMillisecondsBetweenSteps,
+    sal_uInt32 nMaxTimePerStep)
+    : mpTask(rpTask),
+      maTimer(),
+      mpSelf(),
+      mnMaxTimePerStep(nMaxTimePerStep)
+{
+    maTimer.SetInvokeHandler( LINK(this,TimerBasedTaskExecution,TimerCallback) );
+    maTimer.SetTimeout(nMillisecondsBetweenSteps);
+    maTimer.Start();
+}
+
+TimerBasedTaskExecution::~TimerBasedTaskExecution()
+{
+    maTimer.Stop();
+}
+
+IMPL_LINK_NOARG(TimerBasedTaskExecution, TimerCallback, Timer *, void)
+{
+    if (mpTask == nullptr)
+        return;
+
+    if (mpTask->HasNextStep())
+    {
+        // Execute as many steps as fit into the time span of length
+        // mnMaxTimePerStep.  Note that the last step may take longer
+        // than allowed.
+        sal_uInt32 nStartTime (::tools::Time( ::tools::Time::SYSTEM ).GetMSFromTime());
+        SAL_INFO("sd.tools", OSL_THIS_FUNC << ": starting TimerBasedTaskExecution at " << nStartTime);
+        do
+        {
+            mpTask->RunNextStep();
+            sal_uInt32 nDuration (::tools::Time( ::tools::Time::SYSTEM ).GetMSFromTime()-nStartTime);
+            SAL_INFO("sd.tools", OSL_THIS_FUNC << ": executed step in " << nDuration);
+            if (nDuration > mnMaxTimePerStep)
+                break;
+        }
+        while (mpTask->HasNextStep());
+        SAL_INFO("sd.tools", OSL_THIS_FUNC << ": TimerBasedTaskExecution sleeping");
+        maTimer.Start();
+    }
+    else
+        mpSelf.reset();
+}
+
+} // end of namespace ::sd::tools
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */