Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 707 insertions, 0 deletions

diff --git a/sd/source/ui/unoidl/unolayer.cxx b/sd/source/ui/unoidl/unolayer.cxx
new file mode 100644
index 000000000..c6bc3cdf3
--- /dev/null
+++ b/sd/source/ui/unoidl/unolayer.cxx
@@ -0,0 +1,707 @@
+/* -*- 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 <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>
+
+#include "unolayer.hxx"
+
+#include <comphelper/extract.hxx>
+#include <editeng/unoipset.hxx>
+#include <osl/diagnose.h>
+#include <svl/itemprop.hxx>
+#include <svx/svdpagv.hxx>
+#include <svx/svdobj.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+// following ones for InsertSdPage()
+#include <svx/svdlayer.hxx>
+
+#include <DrawDocShell.hxx>
+#include <drawdoc.hxx>
+#include <unomodel.hxx>
+#include <unoprnms.hxx>
+#include <com/sun/star/lang/NoSupportException.hpp>
+#include <svx/svdpool.hxx>
+#include <FrameView.hxx>
+#include <DrawViewShell.hxx>
+#include <View.hxx>
+#include <ViewShell.hxx>
+#include <strings.hrc>
+#include <sdresid.hxx>
+
+#include "unowcntr.hxx"
+#include <vcl/svapp.hxx>
+
+using namespace ::com::sun::star;
+
+// class SdLayer
+#define WID_LAYER_LOCKED    1
+#define WID_LAYER_PRINTABLE 2
+#define WID_LAYER_VISIBLE   3
+#define WID_LAYER_NAME      4
+#define WID_LAYER_TITLE     5
+#define WID_LAYER_DESC      6
+
+static const SvxItemPropertySet* ImplGetSdLayerPropertySet()
+{
+    static const SfxItemPropertyMapEntry aSdLayerPropertyMap_Impl[] =
+    {
+        { u"" UNO_NAME_LAYER_LOCKED,      WID_LAYER_LOCKED,   cppu::UnoType<bool>::get(),            0, 0 },
+        { u"" UNO_NAME_LAYER_PRINTABLE,   WID_LAYER_PRINTABLE,cppu::UnoType<bool>::get(),            0, 0 },
+        { u"" UNO_NAME_LAYER_VISIBLE,     WID_LAYER_VISIBLE,  cppu::UnoType<bool>::get(),            0, 0 },
+        { u"" UNO_NAME_LAYER_NAME,        WID_LAYER_NAME,     ::cppu::UnoType<OUString>::get(), 0, 0 },
+        { u"Title",                    WID_LAYER_TITLE,    ::cppu::UnoType<OUString>::get(), 0, 0 },
+        { u"Description",              WID_LAYER_DESC,     ::cppu::UnoType<OUString>::get(), 0, 0 },
+        { u"", 0, css::uno::Type(), 0, 0 }
+    };
+    static SvxItemPropertySet aSDLayerPropertySet_Impl( aSdLayerPropertyMap_Impl, SdrObject::GetGlobalDrawObjectItemPool() );
+    return &aSDLayerPropertySet_Impl;
+}
+
+SdLayer::SdLayer(SdLayerManager* pLayerManager_, SdrLayer* pSdrLayer_)
+: mxLayerManager(pLayerManager_)
+, pLayer(pSdrLayer_)
+, pPropSet(ImplGetSdLayerPropertySet())
+{
+    // no defaults possible yet, a "set" would overwrite existing information
+    // in view, which is currently needed for saving, because pLayer is not updated
+    // from view.
+}
+
+SdLayer::~SdLayer() noexcept
+{
+}
+
+// uno helper
+UNO3_GETIMPLEMENTATION_IMPL( SdLayer );
+
+// XServiceInfo
+OUString SAL_CALL SdLayer::getImplementationName()
+{
+    return "SdUnoLayer";
+}
+
+sal_Bool SAL_CALL SdLayer::supportsService( const OUString& ServiceName )
+{
+    return cppu::supportsService( this, ServiceName );
+}
+
+uno::Sequence< OUString > SAL_CALL SdLayer::getSupportedServiceNames()
+{
+    return { "com.sun.star.drawing.Layer" };
+}
+
+// beans::XPropertySet
+uno::Reference< beans::XPropertySetInfo > SAL_CALL SdLayer::getPropertySetInfo(  )
+{
+    SolarMutexGuard aGuard;
+    return pPropSet->getPropertySetInfo();
+}
+
+void SAL_CALL SdLayer::setPropertyValue( const OUString& aPropertyName, const uno::Any& aValue )
+{
+    SolarMutexGuard aGuard;
+
+    if(pLayer == nullptr || mxLayerManager == nullptr)
+        throw lang::DisposedException();
+
+    const SfxItemPropertyMapEntry* pEntry = pPropSet->getPropertyMapEntry(aPropertyName);
+
+    switch( pEntry ? pEntry->nWID : -1 )
+    {
+    case WID_LAYER_LOCKED:
+    {
+        pLayer->SetLockedODF( cppu::any2bool(aValue) );
+        set(LOCKED, cppu::any2bool(aValue)); // changes the View, if any exists
+        break;
+    }
+    case WID_LAYER_PRINTABLE:
+    {
+        pLayer->SetPrintableODF( cppu::any2bool(aValue) );
+        set(PRINTABLE, cppu::any2bool(aValue)); // changes the View, if any exists
+        break;
+    }
+    case WID_LAYER_VISIBLE:
+    {
+        pLayer->SetVisibleODF( cppu::any2bool(aValue) );
+        set(VISIBLE, cppu::any2bool(aValue)); // changes the View, if any exists
+        break;
+    }
+    case WID_LAYER_NAME:
+    {
+        OUString aName;
+        if(!(aValue >>= aName))
+            throw lang::IllegalArgumentException();
+
+        pLayer->SetName(aName);
+        mxLayerManager->UpdateLayerView();
+        break;
+    }
+
+    case WID_LAYER_TITLE:
+    {
+        OUString sTitle;
+        if(!(aValue >>= sTitle))
+            throw lang::IllegalArgumentException();
+
+        pLayer->SetTitle(sTitle);
+        break;
+    }
+
+    case WID_LAYER_DESC:
+    {
+        OUString sDescription;
+        if(!(aValue >>= sDescription))
+            throw lang::IllegalArgumentException();
+
+        pLayer->SetDescription(sDescription);
+        break;
+    }
+
+    default:
+        throw beans::UnknownPropertyException( aPropertyName, static_cast<cppu::OWeakObject*>(this));
+    }
+
+    if( mxLayerManager->GetDocShell() )
+        mxLayerManager->GetDocShell()->SetModified();
+}
+
+uno::Any SAL_CALL SdLayer::getPropertyValue( const OUString& PropertyName )
+{
+    SolarMutexGuard aGuard;
+
+    if(pLayer == nullptr || mxLayerManager == nullptr)
+        throw lang::DisposedException();
+
+    const SfxItemPropertyMapEntry* pEntry = pPropSet->getPropertyMapEntry(PropertyName);
+
+    uno::Any aValue;
+
+    switch( pEntry ? pEntry->nWID : -1 )
+    {
+    case WID_LAYER_LOCKED:
+        aValue <<= get( LOCKED );
+        break;
+    case WID_LAYER_PRINTABLE:
+        aValue <<= get( PRINTABLE );
+        break;
+    case WID_LAYER_VISIBLE:
+        aValue <<= get( VISIBLE );
+        break;
+    case WID_LAYER_NAME:
+    {
+        OUString aRet(pLayer->GetName());
+        aValue <<= aRet;
+        break;
+    }
+    case WID_LAYER_TITLE:
+        aValue <<= pLayer->GetTitle();
+        break;
+    case WID_LAYER_DESC:
+        aValue <<= pLayer->GetDescription();
+        break;
+    default:
+        throw beans::UnknownPropertyException( PropertyName, static_cast<cppu::OWeakObject*>(this));
+    }
+
+    return aValue;
+}
+
+void SAL_CALL SdLayer::addPropertyChangeListener( const OUString& , const uno::Reference< beans::XPropertyChangeListener >& ) {}
+void SAL_CALL SdLayer::removePropertyChangeListener( const OUString& , const uno::Reference< beans::XPropertyChangeListener >& ) {}
+void SAL_CALL SdLayer::addVetoableChangeListener( const OUString& , const uno::Reference< beans::XVetoableChangeListener >& ) {}
+void SAL_CALL SdLayer::removeVetoableChangeListener( const OUString& , const uno::Reference< beans::XVetoableChangeListener >& ) {}
+
+bool SdLayer::get( LayerAttribute what ) noexcept
+{
+    if(pLayer && mxLayerManager.is())
+    {
+        // Try 1. is an arbitrary page open?
+        ::sd::View *pView = mxLayerManager->GetView();
+        SdrPageView* pSdrPageView = nullptr;
+        if(pView)
+            pSdrPageView = pView->GetSdrPageView();
+
+        if(pSdrPageView)
+        {
+            OUString aLayerName = pLayer->GetName();
+            switch(what)
+            {
+            case VISIBLE:   return pSdrPageView->IsLayerVisible(aLayerName);
+            case PRINTABLE: return pSdrPageView->IsLayerPrintable(aLayerName);
+            case LOCKED:    return pSdrPageView->IsLayerLocked(aLayerName);
+            }
+        }
+
+        // Try 2. get info from FrameView
+        if(mxLayerManager->GetDocShell())
+        {
+            ::sd::FrameView *pFrameView = mxLayerManager->GetDocShell()->GetFrameView();
+            if(pFrameView)
+                switch(what)
+                {
+                case VISIBLE:   return pFrameView->GetVisibleLayers().IsSet(pLayer->GetID());
+                case PRINTABLE: return pFrameView->GetPrintableLayers().IsSet(pLayer->GetID());
+                case LOCKED:    return pFrameView->GetLockedLayers().IsSet(pLayer->GetID());
+                }
+        }
+
+        // no view at all, e.g. Draw embedded as OLE in text document, ODF default values
+        switch(what)
+        {
+            case VISIBLE:   return true;
+            case PRINTABLE: return true;
+            case LOCKED:    return false;
+        }
+
+    }
+    return false; //TODO: uno::Exception?
+}
+
+void SdLayer::set( LayerAttribute what, bool flag ) noexcept
+{
+    if(!(pLayer && mxLayerManager.is()))
+        return;
+
+    // Try 1. is an arbitrary page open?
+    ::sd::View *pView = mxLayerManager->GetView();
+    SdrPageView* pSdrPageView = nullptr;
+    if(pView)
+        pSdrPageView = pView->GetSdrPageView();
+
+    if(pSdrPageView)
+    {
+        OUString aLayerName(pLayer->GetName());
+        switch(what)
+        {
+        case VISIBLE:   pSdrPageView->SetLayerVisible(aLayerName,flag);
+                        break;
+        case PRINTABLE: pSdrPageView->SetLayerPrintable(aLayerName,flag);
+                        break;
+        case LOCKED:    pSdrPageView->SetLayerLocked(aLayerName,flag);
+                        break;
+        }
+    }
+
+    // Try 2. get info from FrameView
+    if(!mxLayerManager->GetDocShell())
+        return;
+
+    ::sd::FrameView *pFrameView = mxLayerManager->GetDocShell()->GetFrameView();
+
+    if(!pFrameView)
+        return;
+
+    SdrLayerIDSet aNewLayers;
+    switch(what)
+    {
+    case VISIBLE:   aNewLayers = pFrameView->GetVisibleLayers();
+                    break;
+    case PRINTABLE: aNewLayers = pFrameView->GetPrintableLayers();
+                    break;
+    case LOCKED:    aNewLayers = pFrameView->GetLockedLayers();
+                    break;
+    }
+
+    aNewLayers.Set(pLayer->GetID(),flag);
+
+    switch(what)
+    {
+    case VISIBLE:   pFrameView->SetVisibleLayers(aNewLayers);
+                    break;
+    case PRINTABLE: pFrameView->SetPrintableLayers(aNewLayers);
+                    break;
+    case LOCKED:    pFrameView->SetLockedLayers(aNewLayers);
+                    break;
+    }
+    return;
+    //TODO: uno::Exception?
+}
+
+// css::container::XChild
+uno::Reference<uno::XInterface> SAL_CALL SdLayer::getParent()
+{
+    SolarMutexGuard aGuard;
+
+    if( !mxLayerManager.is() )
+        throw lang::DisposedException();
+
+    return uno::Reference<uno::XInterface> (static_cast<cppu::OWeakObject*>(mxLayerManager.get()), uno::UNO_QUERY);
+}
+
+void SAL_CALL SdLayer::setParent (const uno::Reference<uno::XInterface >& )
+{
+    throw lang::NoSupportException ();
+}
+
+// XComponent
+void SAL_CALL SdLayer::dispose(  )
+{
+    mxLayerManager.clear();
+    pLayer = nullptr;
+}
+
+void SAL_CALL SdLayer::addEventListener( const uno::Reference< lang::XEventListener >& )
+{
+    OSL_FAIL("not implemented!");
+}
+
+void SAL_CALL SdLayer::removeEventListener( const uno::Reference< lang::XEventListener >& )
+{
+    OSL_FAIL("not implemented!");
+}
+
+// class SdLayerManager
+SdLayerManager::SdLayerManager( SdXImpressDocument& rMyModel ) noexcept
+:mpModel( &rMyModel)
+{
+    mpLayers.reset(new SvUnoWeakContainer);
+}
+
+SdLayerManager::~SdLayerManager() noexcept
+{
+    dispose();
+}
+
+// uno helper
+UNO3_GETIMPLEMENTATION_IMPL( SdLayerManager );
+
+// XComponent
+void SAL_CALL SdLayerManager::dispose(  )
+{
+    mpModel = nullptr;
+    if( mpLayers )
+    {
+        mpLayers->dispose();
+        mpLayers.reset();
+    }
+}
+
+void SAL_CALL SdLayerManager::addEventListener( const uno::Reference< lang::XEventListener >& )
+{
+    OSL_FAIL("not implemented!");
+}
+
+void SAL_CALL SdLayerManager::removeEventListener( const uno::Reference< lang::XEventListener >& )
+{
+    OSL_FAIL("not implemented!");
+}
+
+// XServiceInfo
+OUString SAL_CALL SdLayerManager::getImplementationName()
+{
+    return "SdUnoLayerManager";
+}
+
+sal_Bool SAL_CALL SdLayerManager::supportsService( const OUString& ServiceName )
+{
+ return cppu::supportsService( this, ServiceName );
+}
+
+uno::Sequence< OUString > SAL_CALL SdLayerManager::getSupportedServiceNames()
+{
+    return {"com.sun.star.drawing.LayerManager"};
+}
+
+// XLayerManager
+uno::Reference< drawing::XLayer > SAL_CALL SdLayerManager::insertNewByIndex( sal_Int32 nIndex )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    uno::Reference< drawing::XLayer > xLayer;
+
+    if( mpModel->mpDoc )
+    {
+        SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+        sal_uInt16 nLayerCnt = rLayerAdmin.GetLayerCount();
+        sal_Int32 nLayer = nLayerCnt - 2 + 1;
+        OUString aLayerName;
+
+        // Test for existing names
+        while( aLayerName.isEmpty() || rLayerAdmin.GetLayer( aLayerName ) )
+        {
+            aLayerName = SdResId(STR_LAYER) + OUString::number(nLayer);
+            ++nLayer;
+        }
+
+        SdrLayerAdmin& rLA=mpModel->mpDoc->GetLayerAdmin();
+        const sal_Int32 nMax=rLA.GetLayerCount();
+        if (nIndex>nMax) nIndex=nMax;
+        xLayer = GetLayer (rLA.NewLayer(aLayerName,static_cast<sal_uInt16>(nIndex)));
+        mpModel->SetModified();
+    }
+    return xLayer;
+}
+
+void SAL_CALL SdLayerManager::remove( const uno::Reference< drawing::XLayer >& xLayer )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    SdLayer* pSdLayer = comphelper::getFromUnoTunnel<SdLayer>(xLayer);
+
+    if(pSdLayer && GetView())
+    {
+        const SdrLayer* pSdrLayer = pSdLayer->GetSdrLayer();
+        GetView()->DeleteLayer( pSdrLayer->GetName() );
+
+        UpdateLayerView();
+    }
+
+    mpModel->SetModified();
+}
+
+void SAL_CALL SdLayerManager::attachShapeToLayer( const uno::Reference< drawing::XShape >& xShape, const uno::Reference< drawing::XLayer >& xLayer )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    SdLayer* pSdLayer = comphelper::getFromUnoTunnel<SdLayer>(xLayer);
+    SdrLayer* pSdrLayer = pSdLayer?pSdLayer->GetSdrLayer():nullptr;
+    if(pSdrLayer==nullptr)
+        return;
+
+    SdrObject* pSdrObject = SdrObject::getSdrObjectFromXShape( xShape );
+
+    if(pSdrObject)
+        pSdrObject->SetLayer(pSdrLayer->GetID());
+
+    mpModel->SetModified();
+}
+
+uno::Reference< drawing::XLayer > SAL_CALL SdLayerManager::getLayerForShape( const uno::Reference< drawing::XShape >& xShape )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    uno::Reference< drawing::XLayer >  xLayer;
+
+    if(mpModel->mpDoc)
+    {
+        SdrObject* pObj = SdrObject::getSdrObjectFromXShape( xShape );
+        if(pObj)
+        {
+            SdrLayerID aId = pObj->GetLayer();
+            SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+            xLayer = GetLayer (rLayerAdmin.GetLayerPerID(aId));
+        }
+    }
+    return xLayer;
+}
+
+// XIndexAccess
+sal_Int32 SAL_CALL SdLayerManager::getCount()
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    if( mpModel->mpDoc )
+    {
+        SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+        return rLayerAdmin.GetLayerCount();
+    }
+
+    return 0;
+}
+
+uno::Any SAL_CALL SdLayerManager::getByIndex( sal_Int32 nLayer )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    if( nLayer >= getCount() || nLayer < 0 )
+        throw lang::IndexOutOfBoundsException();
+
+    uno::Any aAny;
+
+    if( mpModel->mpDoc )
+    {
+        SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+        uno::Reference<drawing::XLayer> xLayer (GetLayer (rLayerAdmin.GetLayer(static_cast<sal_uInt16>(nLayer))));
+        aAny <<= xLayer;
+    }
+    return aAny;
+}
+
+// XNameAccess
+uno::Any SAL_CALL SdLayerManager::getByName( const OUString& aName )
+{
+    SolarMutexGuard aGuard;
+
+    if( (mpModel == nullptr) || (mpModel->mpDoc == nullptr ) )
+        throw lang::DisposedException();
+
+    SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+    SdrLayer* pLayer = rLayerAdmin.GetLayer(aName);
+    if( pLayer == nullptr )
+        throw container::NoSuchElementException();
+
+    return uno::Any( GetLayer (pLayer) );
+}
+
+uno::Sequence< OUString > SAL_CALL SdLayerManager::getElementNames()
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+    const sal_uInt16 nLayerCount = rLayerAdmin.GetLayerCount();
+
+    uno::Sequence< OUString > aSeq( nLayerCount );
+
+    OUString* pStrings = aSeq.getArray();
+
+    for( sal_uInt16 nLayer = 0; nLayer < nLayerCount; nLayer++ )
+    {
+        SdrLayer* pLayer = rLayerAdmin.GetLayer( nLayer );
+        if( pLayer )
+            *pStrings++ = pLayer->GetName();
+    }
+
+    return aSeq;
+}
+
+sal_Bool SAL_CALL SdLayerManager::hasByName( const OUString& aName )
+{
+    SolarMutexGuard aGuard;
+
+    if( mpModel == nullptr )
+        throw lang::DisposedException();
+
+    SdrLayerAdmin& rLayerAdmin = mpModel->mpDoc->GetLayerAdmin();
+
+    return nullptr != rLayerAdmin.GetLayer(aName);
+}
+
+// XElementAccess
+uno::Type SAL_CALL SdLayerManager::getElementType()
+{
+    return cppu::UnoType<drawing::XLayer>::get();
+}
+
+sal_Bool SAL_CALL SdLayerManager::hasElements()
+{
+    return getCount() > 0;
+}
+
+/**
+ * If something was changed at the layers, this methods takes care that the
+ * changes are made visible in sdbcx::View.
+ */
+void SdLayerManager::UpdateLayerView() const noexcept
+{
+    if(!mpModel->mpDocShell)
+        return;
+
+    ::sd::DrawViewShell* pDrViewSh = dynamic_cast< ::sd::DrawViewShell* >( mpModel->mpDocShell->GetViewShell());
+
+    if(pDrViewSh)
+    {
+        bool bLayerMode = pDrViewSh->IsLayerModeActive();
+        pDrViewSh->ChangeEditMode(pDrViewSh->GetEditMode(), !bLayerMode);
+        pDrViewSh->ChangeEditMode(pDrViewSh->GetEditMode(), bLayerMode);
+    }
+
+    mpModel->mpDoc->SetChanged();
+}
+
+/** */
+::sd::View* SdLayerManager::GetView() const noexcept
+{
+    if( mpModel->mpDocShell )
+    {
+        ::sd::ViewShell* pViewSh = mpModel->mpDocShell->GetViewShell();
+        if(pViewSh)
+            return pViewSh->GetView();
+    }
+    return nullptr;
+}
+
+namespace
+{
+/** Compare two pointers to <type>SdrLayer</type> objects.
+    @param xRef
+        The implementing SdLayer class provides the first pointer by the
+        <member>SdLayer::GetSdrLayer</member> method.
+    @param pSearchData
+        This void pointer is the second pointer to an <type>SdrLayer</type>
+        object.
+    @return
+        Return </True> if both pointers point to the same object.
+*/
+bool compare_layers (const uno::WeakReference<uno::XInterface>& xRef, void const * pSearchData)
+{
+    uno::Reference<uno::XInterface> xLayer (xRef);
+    if (xLayer.is())
+    {
+        SdLayer* pSdLayer = comphelper::getFromUnoTunnel<SdLayer> (xRef);
+        if (pSdLayer != nullptr)
+        {
+            SdrLayer* pSdrLayer = pSdLayer->GetSdrLayer ();
+            if (pSdrLayer == static_cast<SdrLayer const *>(pSearchData))
+                return true;
+        }
+    }
+    return false;
+}
+}
+
+/** Use the <member>mpLayers</member> container of weak references to either
+    retrieve and return a previously created <type>XLayer</type> object for
+    the given <type>SdrLayer</type> object or create and remember a new one.
+*/
+uno::Reference<drawing::XLayer> SdLayerManager::GetLayer (SdrLayer* pLayer)
+{
+    uno::WeakReference<uno::XInterface> xRef;
+    uno::Reference<drawing::XLayer>  xLayer;
+
+    // Search existing xLayer for the given pLayer.
+    if (mpLayers->findRef (xRef, static_cast<void*>(pLayer), compare_layers))
+        xLayer.set(xRef, uno::UNO_QUERY);
+
+    // Create the xLayer if necessary.
+    if ( ! xLayer.is())
+    {
+        xLayer = new SdLayer (this, pLayer);
+
+        // Remember the new xLayer for future calls.
+        uno::WeakReference<uno::XInterface> wRef(xLayer);
+        mpLayers->insert(wRef);
+    }
+
+    return xLayer;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */