move TreeControlPeer to toolkit

Change-Id: Id5298615f0f3dad6e61955e23367c0345b33f2b6
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/88813
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

4 files changed, 1759 insertions, 0 deletions

diff --git a/toolkit/Library_tk.mk b/toolkit/Library_tk.mk
index 55639910d7fb..752a0cc15f7b 100644
--- a/toolkit/Library_tk.mk
+++ b/toolkit/Library_tk.mk
@@ -103,6 +103,7 @@ $(eval $(call gb_Library_add_exception_objects,tk,\
     toolkit/source/controls/animatedimages \
     toolkit/source/controls/spinningprogress \
     toolkit/source/controls/tree/treecontrol \
+    toolkit/source/controls/tree/treecontrolpeer \
     toolkit/source/controls/tree/treedatamodel \
     toolkit/source/controls/unocontrol \
     toolkit/source/controls/unocontrolbase \
diff --git a/toolkit/inc/controls/treecontrolpeer.hxx b/toolkit/inc/controls/treecontrolpeer.hxx
new file mode 100644
index 000000000000..fb547973283d
--- /dev/null
+++ b/toolkit/inc/controls/treecontrolpeer.hxx
@@ -0,0 +1,170 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <com/sun/star/awt/tree/XTreeControl.hpp>
+#include <com/sun/star/awt/tree/XTreeDataModel.hpp>
+#include <com/sun/star/graphic/XGraphicProvider.hpp>
+
+#include <toolkit/awt/vclxwindow.hxx>
+#include <toolkit/helper/listenermultiplexer.hxx>
+
+#include <vcl/image.hxx>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <map>
+
+namespace com { namespace sun { namespace star { namespace awt { namespace tree {
+
+class XTreeNode;
+
+}}}}}
+
+class UnoTreeListEntry;
+class TreeControlPeer;
+class UnoTreeListBoxImpl;
+
+class TreeControlPeer : public ::cppu::ImplInheritanceHelper< VCLXWindow, css::awt::tree::XTreeControl, css::awt::tree::XTreeDataModelListener >
+{
+    typedef std::map<css::uno::Reference<css::awt::tree::XTreeNode>, UnoTreeListEntry*> TreeNodeMap;
+
+    friend class UnoTreeListBoxImpl;
+    friend class UnoTreeListEntry;
+public:
+    TreeControlPeer();
+    virtual ~TreeControlPeer() override;
+
+    vcl::Window* createVclControl( vcl::Window* pParent, sal_Int64 nWinStyle );
+
+    // css::view::XSelectionSupplier
+    virtual sal_Bool SAL_CALL select( const css::uno::Any& xSelection ) override;
+    virtual css::uno::Any SAL_CALL getSelection(  ) override;
+    virtual void SAL_CALL addSelectionChangeListener( const css::uno::Reference< css::view::XSelectionChangeListener >& xListener ) override;
+    virtual void SAL_CALL removeSelectionChangeListener( const css::uno::Reference< css::view::XSelectionChangeListener >& xListener ) override;
+
+    // css::view::XMultiSelectionSupplier
+    virtual sal_Bool SAL_CALL addSelection( const css::uno::Any& Selection ) override;
+    virtual void SAL_CALL removeSelection( const css::uno::Any& Selection ) override;
+    virtual void SAL_CALL clearSelection(  ) override;
+    virtual ::sal_Int32 SAL_CALL getSelectionCount(  ) override;
+    virtual css::uno::Reference< css::container::XEnumeration > SAL_CALL createSelectionEnumeration(  ) override;
+    virtual css::uno::Reference< css::container::XEnumeration > SAL_CALL createReverseSelectionEnumeration(  ) override;
+
+    // css::awt::XTreeControl
+    virtual OUString SAL_CALL getDefaultExpandedGraphicURL() override;
+    virtual void SAL_CALL setDefaultExpandedGraphicURL( const OUString& _defaultexpandedgraphicurl ) override;
+    virtual OUString SAL_CALL getDefaultCollapsedGraphicURL() override;
+    virtual void SAL_CALL setDefaultCollapsedGraphicURL( const OUString& _defaultcollapsedgraphicurl ) override;
+    virtual sal_Bool SAL_CALL isNodeExpanded( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual sal_Bool SAL_CALL isNodeCollapsed( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual void SAL_CALL makeNodeVisible( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual sal_Bool SAL_CALL isNodeVisible( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual void SAL_CALL expandNode( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual void SAL_CALL collapseNode( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual void SAL_CALL addTreeExpansionListener( const css::uno::Reference< css::awt::tree::XTreeExpansionListener >& Listener ) override;
+    virtual void SAL_CALL removeTreeExpansionListener( const css::uno::Reference< css::awt::tree::XTreeExpansionListener >& Listener ) override;
+    virtual css::uno::Reference< css::awt::tree::XTreeNode > SAL_CALL getNodeForLocation( ::sal_Int32 x, ::sal_Int32 y ) override;
+    virtual css::uno::Reference< css::awt::tree::XTreeNode > SAL_CALL getClosestNodeForLocation( ::sal_Int32 x, ::sal_Int32 y ) override;
+    virtual css::awt::Rectangle SAL_CALL getNodeRect( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual sal_Bool SAL_CALL isEditing(  ) override;
+    virtual sal_Bool SAL_CALL stopEditing(  ) override;
+    virtual void SAL_CALL cancelEditing(  ) override;
+    virtual void SAL_CALL startEditingAtNode( const css::uno::Reference< css::awt::tree::XTreeNode >& Node ) override;
+    virtual void SAL_CALL addTreeEditListener( const css::uno::Reference< css::awt::tree::XTreeEditListener >& Listener ) override;
+    virtual void SAL_CALL removeTreeEditListener( const css::uno::Reference< css::awt::tree::XTreeEditListener >& Listener ) override;
+
+    // css::awt::tree::TreeDataModelListener
+    virtual void SAL_CALL treeNodesChanged( const css::awt::tree::TreeDataModelEvent& aEvent ) override;
+    virtual void SAL_CALL treeNodesInserted( const css::awt::tree::TreeDataModelEvent& aEvent ) override;
+    virtual void SAL_CALL treeNodesRemoved( const css::awt::tree::TreeDataModelEvent& aEvent ) override;
+    virtual void SAL_CALL treeStructureChanged( const css::awt::tree::TreeDataModelEvent& aEvent ) override;
+
+    // XEventListener
+    void SAL_CALL disposing( const css::lang::EventObject& Source ) override;
+
+    // css::awt::XLayoutConstrains
+    css::awt::Size SAL_CALL getMinimumSize() override;
+    css::awt::Size SAL_CALL getPreferredSize() override;
+    css::awt::Size SAL_CALL calcAdjustedSize( const css::awt::Size& aNewSize ) override;
+
+    // css::awt::XVclWindowPeer
+    void SAL_CALL setProperty( const OUString& PropertyName, const css::uno::Any& Value ) override;
+    css::uno::Any SAL_CALL getProperty( const OUString& PropertyName ) override;
+
+private:
+    /// @throws css::lang::IllegalArgumentException
+    UnoTreeListEntry* getEntry( const css::uno::Reference< css::awt::tree::XTreeNode >& xNode, bool bThrow = true );
+
+    void disposeControl();
+
+    bool onEditingEntry( UnoTreeListEntry const * pEntry );
+    bool onEditedEntry( UnoTreeListEntry const * pEntry, const OUString& rNewText );
+
+    void fillTree( UnoTreeListBoxImpl& rTree, const css::uno::Reference< css::awt::tree::XTreeDataModel >& xDataModel );
+    void addNode( UnoTreeListBoxImpl& rTree, const css::uno::Reference< css::awt::tree::XTreeNode >& xNode, UnoTreeListEntry* pParentEntry );
+
+    UnoTreeListEntry* createEntry( const css::uno::Reference< css::awt::tree::XTreeNode >& xNode, UnoTreeListEntry* pParent, sal_uLong nPos );
+    void updateEntry( UnoTreeListEntry* pEntry );
+
+    void updateTree( const css::awt::tree::TreeDataModelEvent& rEvent );
+    void updateNode( UnoTreeListBoxImpl const & rTree, const css::uno::Reference< css::awt::tree::XTreeNode >& xNode );
+    void updateChildNodes( UnoTreeListBoxImpl const & rTree, const css::uno::Reference< css::awt::tree::XTreeNode >& xParentNode, UnoTreeListEntry* pParentEntry );
+
+    static OUString getEntryString( const css::uno::Any& rValue );
+
+    /// @throws css::uno::RuntimeException
+    UnoTreeListBoxImpl& getTreeListBoxOrThrow() const;
+    /// @throws css::uno::RuntimeException
+    /// @throws css::lang::IllegalArgumentException
+    void ChangeNodesSelection( const css::uno::Any& rSelection, bool bSelect, bool bSetSelection );
+
+    void onChangeDataModel( UnoTreeListBoxImpl& rTree, const css::uno::Reference< css::awt::tree::XTreeDataModel >& xDataModel );
+
+    void onSelectionChanged();
+    void onRequestChildNodes( const css::uno::Reference< css::awt::tree::XTreeNode >& xNode );
+    bool onExpanding( const css::uno::Reference< css::awt::tree::XTreeNode >& xNode, bool bExpanding );
+    void onExpanded( const css::uno::Reference< css::awt::tree::XTreeNode >& xNode, bool bExpanding );
+
+    void onChangeRootDisplayed( bool bIsRootDisplayed );
+
+    void addEntry( UnoTreeListEntry* pEntry );
+    void removeEntry( UnoTreeListEntry const * pEntry );
+
+    bool loadImage( const OUString& rURL, Image& rImage );
+
+private:
+    css::uno::Reference< css::awt::tree::XTreeDataModel >mxDataModel;
+    TreeSelectionListenerMultiplexer maSelectionListeners;
+    TreeExpansionListenerMultiplexer maTreeExpansionListeners;
+    TreeEditListenerMultiplexer maTreeEditListeners;
+    bool mbIsRootDisplayed;
+    VclPtr<UnoTreeListBoxImpl> mpTreeImpl;
+    sal_Int32 mnEditLock;
+    OUString msDefaultCollapsedGraphicURL;
+    OUString msDefaultExpandedGraphicURL;
+    Image maDefaultExpandedImage;
+    Image maDefaultCollapsedImage;
+    std::unique_ptr<TreeNodeMap> mpTreeNodeMap;
+    css::uno::Reference< css::graphic::XGraphicProvider > mxGraphicProvider;
+};
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/toolkit/source/awt/vclxtoolkit.cxx b/toolkit/source/awt/vclxtoolkit.cxx
index cc3adf9c3cde..64b33e4de956 100644
--- a/toolkit/source/awt/vclxtoolkit.cxx
+++ b/toolkit/source/awt/vclxtoolkit.cxx
@@ -79,6 +79,7 @@
 
 #include <toolkit/helper/convert.hxx>
 #include <controls/filectrl.hxx>
+#include <controls/treecontrolpeer.hxx>
 #include <vcl/button.hxx>
 #include <vcl/combobox.hxx>
 #include <vcl/ctrl.hxx>
@@ -1808,6 +1809,12 @@ vcl::Window* VCLXToolkit::ImplCreateWindow( VCLXWindow** ppNewComp,
                     pNewWindow = VclPtr<FileControl>::Create( pParent, nWinBits );
                     *ppNewComp = new VCLXFileControl;
                 }
+                else if (aServiceName == "tree")
+                {
+                    TreeControlPeer* pPeer = new TreeControlPeer;
+                    *ppNewComp = pPeer;
+                    pNewWindow = pPeer->createVclControl( pParent, nWinBits );
+                }
             break;
             default:
                 OSL_ENSURE( false, "VCLXToolkit::ImplCreateWindow: unknown window type!" );
diff --git a/toolkit/source/controls/tree/treecontrolpeer.cxx b/toolkit/source/controls/tree/treecontrolpeer.cxx
new file mode 100644
index 000000000000..cefb7d4762ea
--- /dev/null
+++ b/toolkit/source/controls/tree/treecontrolpeer.cxx
@@ -0,0 +1,1581 @@
+/* -*- 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 <com/sun/star/graphic/GraphicProvider.hpp>
+#include <com/sun/star/lang/DisposedException.hpp>
+#include <com/sun/star/view/SelectionType.hpp>
+#include <com/sun/star/util/VetoException.hpp>
+#include <o3tl/any.hxx>
+#include <toolkit/helper/property.hxx>
+#include <toolkit/helper/vclunohelper.hxx>
+
+#include <com/sun/star/awt/tree/XMutableTreeNode.hpp>
+#include <controls/treecontrolpeer.hxx>
+#include <comphelper/processfactory.hxx>
+
+#include <cppuhelper/implbase.hxx>
+#include <rtl/ref.hxx>
+#include <vcl/graph.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/treelistbox.hxx>
+#include <vcl/treelistentry.hxx>
+#include <vcl/viewdataentry.hxx>
+#include <vcl/svlbitm.hxx>
+
+#include <map>
+
+using namespace ::com::sun::star;
+using namespace css::uno;
+using namespace css::lang;
+using namespace css::awt::tree;
+using namespace css::beans;
+using namespace css::view;
+using namespace css::container;
+using namespace css::util;
+using namespace css::graphic;
+
+namespace {
+
+struct LockGuard
+{
+public:
+    explicit LockGuard( sal_Int32& rLock )
+    : mrLock( rLock )
+    {
+        rLock++;
+    }
+
+    ~LockGuard()
+    {
+        mrLock--;
+    }
+
+    sal_Int32& mrLock;
+};
+
+
+class ImplContextGraphicItem : public SvLBoxContextBmp
+{
+public:
+    ImplContextGraphicItem( Image const & rI1, Image const & rI2, bool bExpanded)
+        : SvLBoxContextBmp(rI1, rI2, bExpanded) {}
+
+    OUString msExpandedGraphicURL;
+    OUString msCollapsedGraphicURL;
+};
+
+
+}
+
+class UnoTreeListBoxImpl : public SvTreeListBox
+{
+public:
+    UnoTreeListBoxImpl( TreeControlPeer* pPeer, vcl::Window* pParent, WinBits nWinStyle );
+    virtual ~UnoTreeListBoxImpl() override;
+    virtual void dispose() override;
+
+    void            insert( SvTreeListEntry* pEntry, SvTreeListEntry* pParent, sal_uLong nPos );
+
+    virtual void    RequestingChildren( SvTreeListEntry* pParent ) override;
+
+    virtual bool    EditingEntry( SvTreeListEntry* pEntry, Selection& ) override;
+    virtual bool    EditedEntry( SvTreeListEntry* pEntry, const OUString& rNewText ) override;
+
+    DECL_LINK(OnSelectionChangeHdl, SvTreeListBox*, void);
+    DECL_LINK(OnExpandingHdl, SvTreeListBox*, bool);
+    DECL_LINK(OnExpandedHdl, SvTreeListBox*, void);
+
+private:
+    rtl::Reference< TreeControlPeer > mxPeer;
+};
+
+
+namespace {
+
+class UnoTreeListItem : public SvLBoxString
+{
+public:
+                    UnoTreeListItem();
+
+    void            InitViewData( SvTreeListBox*,SvTreeListEntry*,SvViewDataItem * = nullptr ) override;
+    void            SetImage( const Image& rImage );
+    const OUString& GetGraphicURL() const { return maGraphicURL;}
+    void            SetGraphicURL( const OUString& rGraphicURL );
+    virtual void    Paint(const Point& rPos, SvTreeListBox& rOutDev, vcl::RenderContext& rRenderContext,
+                          const SvViewDataEntry* pView, const SvTreeListEntry& rEntry) override;
+    std::unique_ptr<SvLBoxItem> Clone( SvLBoxItem const * pSource ) const override;
+
+private:
+    OUString        maGraphicURL;
+    Image           maImage;
+};
+
+}
+
+class UnoTreeListEntry : public SvTreeListEntry
+{
+public:
+    UnoTreeListEntry( const Reference< XTreeNode >& xNode, TreeControlPeer* pPeer );
+    virtual ~UnoTreeListEntry() override;
+
+    Reference< XTreeNode > mxNode;
+    TreeControlPeer* mpPeer;
+};
+
+TreeControlPeer::TreeControlPeer()
+    : maSelectionListeners( *this )
+    , maTreeExpansionListeners( *this )
+    , maTreeEditListeners( *this )
+    , mbIsRootDisplayed(false)
+    , mpTreeImpl( nullptr )
+    , mnEditLock( 0 )
+{
+}
+
+
+TreeControlPeer::~TreeControlPeer()
+{
+    if( mpTreeImpl )
+        mpTreeImpl->Clear();
+}
+
+
+void TreeControlPeer::addEntry( UnoTreeListEntry* pEntry )
+{
+    if( pEntry && pEntry->mxNode.is() )
+    {
+        if( !mpTreeNodeMap )
+        {
+            mpTreeNodeMap.reset( new TreeNodeMap );
+        }
+
+        (*mpTreeNodeMap)[ pEntry->mxNode ] = pEntry;
+    }
+}
+
+
+void TreeControlPeer::removeEntry( UnoTreeListEntry const * pEntry )
+{
+    if( mpTreeNodeMap && pEntry && pEntry->mxNode.is() )
+    {
+        TreeNodeMap::iterator aIter( mpTreeNodeMap->find( pEntry->mxNode ) );
+        if( aIter != mpTreeNodeMap->end() )
+        {
+            mpTreeNodeMap->erase( aIter );
+        }
+    }
+}
+
+
+UnoTreeListEntry* TreeControlPeer::getEntry( const Reference< XTreeNode >& xNode, bool bThrow /* = true */ )
+{
+    if( mpTreeNodeMap )
+    {
+        TreeNodeMap::iterator aIter( mpTreeNodeMap->find( xNode ) );
+        if( aIter != mpTreeNodeMap->end() )
+            return (*aIter).second;
+    }
+
+    if( bThrow )
+        throw IllegalArgumentException();
+
+    return nullptr;
+}
+
+
+vcl::Window* TreeControlPeer::createVclControl( vcl::Window* pParent, sal_Int64 nWinStyle )
+{
+    mpTreeImpl = VclPtr<UnoTreeListBoxImpl>::Create( this, pParent, nWinStyle );
+    return mpTreeImpl;
+}
+
+
+/** called from the UnoTreeListBoxImpl when it gets deleted */
+void TreeControlPeer::disposeControl()
+{
+    mpTreeNodeMap.reset();
+    mpTreeImpl = nullptr;
+}
+
+
+UnoTreeListEntry* TreeControlPeer::createEntry( const Reference< XTreeNode >& xNode, UnoTreeListEntry* pParent, sal_uLong nPos /* = TREELIST_APPEND */ )
+{
+    UnoTreeListEntry* pEntry = nullptr;
+    if( mpTreeImpl )
+    {
+        Image aImage;
+        pEntry = new UnoTreeListEntry( xNode, this );
+        pEntry->AddItem(std::make_unique<ImplContextGraphicItem>(aImage, aImage, true));
+
+        std::unique_ptr<UnoTreeListItem> pUnoItem(new UnoTreeListItem);
+
+        if( !xNode->getNodeGraphicURL().isEmpty() )
+        {
+            pUnoItem->SetGraphicURL( xNode->getNodeGraphicURL() );
+            Image aNodeImage;
+            loadImage( xNode->getNodeGraphicURL(), aNodeImage );
+            pUnoItem->SetImage( aNodeImage );
+            mpTreeImpl->AdjustEntryHeight( aNodeImage );
+        }
+
+        pEntry->AddItem(std::move(pUnoItem));
+
+        mpTreeImpl->insert( pEntry, pParent, nPos );
+
+        if( !msDefaultExpandedGraphicURL.isEmpty() )
+            mpTreeImpl->SetExpandedEntryBmp( pEntry, maDefaultExpandedImage );
+
+        if( !msDefaultCollapsedGraphicURL.isEmpty() )
+            mpTreeImpl->SetCollapsedEntryBmp( pEntry, maDefaultCollapsedImage );
+
+        updateEntry( pEntry );
+    }
+    return pEntry;
+}
+
+
+void TreeControlPeer::updateEntry( UnoTreeListEntry* pEntry )
+{
+    bool bChanged = false;
+    if( !(pEntry && pEntry->mxNode.is() && mpTreeImpl) )
+        return;
+
+    const OUString aValue( getEntryString( pEntry->mxNode->getDisplayValue() ) );
+    UnoTreeListItem* pUnoItem = dynamic_cast< UnoTreeListItem* >( &pEntry->GetItem( 1 ) );
+    if( pUnoItem )
+    {
+        if( aValue != pUnoItem->GetText() )
+        {
+            pUnoItem->SetText( aValue );
+            bChanged = true;
+        }
+
+        if( pUnoItem->GetGraphicURL() != pEntry->mxNode->getNodeGraphicURL() )
+        {
+            Image aImage;
+            if( loadImage( pEntry->mxNode->getNodeGraphicURL(), aImage ) )
+            {
+                pUnoItem->SetGraphicURL( pEntry->mxNode->getNodeGraphicURL() );
+                pUnoItem->SetImage( aImage );
+                mpTreeImpl->AdjustEntryHeight( aImage );
+                bChanged = true;
+            }
+        }
+    }
+
+    if( bool(pEntry->mxNode->hasChildrenOnDemand()) != pEntry->HasChildrenOnDemand() )
+    {
+        pEntry->EnableChildrenOnDemand( pEntry->mxNode->hasChildrenOnDemand() );
+        bChanged = true;
+    }
+
+    ImplContextGraphicItem* pContextGraphicItem = dynamic_cast< ImplContextGraphicItem* >( &pEntry->GetItem( 0 ) );
+    if( pContextGraphicItem )
+    {
+        if( pContextGraphicItem->msExpandedGraphicURL != pEntry->mxNode->getExpandedGraphicURL() )
+        {
+            Image aImage;
+            if( loadImage( pEntry->mxNode->getExpandedGraphicURL(), aImage ) )
+            {
+                pContextGraphicItem->msExpandedGraphicURL = pEntry->mxNode->getExpandedGraphicURL();
+                mpTreeImpl->SetExpandedEntryBmp( pEntry, aImage );
+                bChanged = true;
+            }
+        }
+        if( pContextGraphicItem->msCollapsedGraphicURL != pEntry->mxNode->getCollapsedGraphicURL() )
+        {
+            Image aImage;
+            if( loadImage( pEntry->mxNode->getCollapsedGraphicURL(), aImage ) )
+            {
+                pContextGraphicItem->msCollapsedGraphicURL = pEntry->mxNode->getCollapsedGraphicURL();
+                mpTreeImpl->SetCollapsedEntryBmp( pEntry, aImage );
+                bChanged = true;
+            }
+        }
+    }
+
+    if( bChanged )
+        mpTreeImpl->GetModel()->InvalidateEntry( pEntry );
+}
+
+
+void TreeControlPeer::onSelectionChanged()
+{
+    Reference< XInterface > xSource( static_cast< ::cppu::OWeakObject* >( this ) );
+    EventObject aEvent( xSource );
+    maSelectionListeners.selectionChanged( aEvent );
+}
+
+
+void TreeControlPeer::onRequestChildNodes( const Reference< XTreeNode >& xNode )
+{
+    try
+    {
+        Reference< XInterface > xSource( static_cast< ::cppu::OWeakObject* >( this ) );
+        TreeExpansionEvent aEvent( xSource, xNode );
+        maTreeExpansionListeners.requestChildNodes( aEvent );
+    }
+    catch( Exception& )
+    {
+    }
+}
+
+
+bool TreeControlPeer::onExpanding( const Reference< XTreeNode >& xNode, bool bExpanding )
+{
+    try
+    {
+        Reference< XInterface > xSource( static_cast< ::cppu::OWeakObject* >( this ) );
+        TreeExpansionEvent aEvent( xSource, xNode );
+        if( bExpanding )
+        {
+            maTreeExpansionListeners.treeExpanding( aEvent );
+        }
+        else
+        {
+            maTreeExpansionListeners.treeCollapsing( aEvent );
+        }
+    }
+    catch( Exception& )
+    {
+        return false;
+    }
+    return true;
+}
+
+
+void TreeControlPeer::onExpanded( const Reference< XTreeNode >& xNode, bool bExpanding )
+{
+    try
+    {
+        Reference< XInterface > xSource( static_cast< ::cppu::OWeakObject* >( this ) );
+        TreeExpansionEvent aEvent( xSource, xNode );
+
+        if( bExpanding )
+        {
+            maTreeExpansionListeners.treeExpanded( aEvent );
+        }
+        else
+        {
+            maTreeExpansionListeners.treeCollapsed( aEvent );
+        }
+    }
+    catch( Exception& )
+    {
+    }
+}
+
+
+void TreeControlPeer::fillTree( UnoTreeListBoxImpl& rTree, const Reference< XTreeDataModel >& xDataModel )
+{
+    rTree.Clear();
+
+    if( !xDataModel.is() )
+        return;
+
+    Reference< XTreeNode > xRootNode( xDataModel->getRoot() );
+    if( !xRootNode.is() )
+        return;
+
+    if( mbIsRootDisplayed )
+    {
+        addNode( rTree, xRootNode, nullptr );
+    }
+    else
+    {
+        const sal_Int32 nChildCount = xRootNode->getChildCount();
+        for( sal_Int32 nChild = 0; nChild < nChildCount; nChild++ )
+            addNode( rTree, xRootNode->getChildAt( nChild ), nullptr );
+    }
+}
+
+
+void TreeControlPeer::addNode( UnoTreeListBoxImpl& rTree, const Reference< XTreeNode >& xNode, UnoTreeListEntry* pParentEntry )
+{
+    if( xNode.is() )
+    {
+        UnoTreeListEntry* pEntry = createEntry( xNode, pParentEntry, TREELIST_APPEND );
+        const sal_Int32 nChildCount = xNode->getChildCount();
+        for( sal_Int32 nChild = 0; nChild < nChildCount; nChild++ )
+            addNode( rTree, xNode->getChildAt( nChild ), pEntry );
+    }
+}
+
+
+UnoTreeListBoxImpl& TreeControlPeer::getTreeListBoxOrThrow() const
+{
+    if( !mpTreeImpl )
+        throw DisposedException();
+    return *mpTreeImpl;
+}
+
+
+void TreeControlPeer::ChangeNodesSelection( const Any& rSelection, bool bSelect, bool bSetSelection )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    Reference< XTreeNode > xTempNode;
+
+    Sequence<Reference<XTreeNode>> pNodes;
+    sal_Int32 nCount = 0;
+
+    if( rSelection.hasValue() )
+    {
+        switch( rSelection.getValueTypeClass() )
+        {
+        case TypeClass_INTERFACE:
+            {
+                rSelection >>= xTempNode;
+                if( xTempNode.is() )
+                {
+                    nCount = 1;
+                    pNodes = {xTempNode};
+                }
+                break;
+            }
+        case TypeClass_SEQUENCE:
+            {
+                if( auto rSeq = o3tl::tryAccess<Sequence<Reference<XTreeNode>>>(
+                        rSelection) )
+                {
+                    nCount = rSeq->getLength();
+                    pNodes = *rSeq;
+                }
+                break;
+            }
+        default:
+            break;
+        }
+
+        if( nCount == 0 )
+            throw IllegalArgumentException();
+    }
+
+    if( bSetSelection )
+        rTree.SelectAll( false );
+
+    for( sal_Int32 i = 0; i != nCount; ++i )
+    {
+        UnoTreeListEntry* pEntry = getEntry( pNodes[i] );
+        rTree.Select( pEntry, bSelect );
+    }
+}
+
+
+// css::view::XSelectionSupplier
+
+
+sal_Bool SAL_CALL TreeControlPeer::select( const Any& rSelection )
+{
+    SolarMutexGuard aGuard;
+    ChangeNodesSelection( rSelection, true, true );
+    return true;
+}
+
+
+Any SAL_CALL TreeControlPeer::getSelection()
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    Any aRet;
+
+    sal_uLong nSelectionCount = rTree.GetSelectionCount();
+    if( nSelectionCount == 1 )
+    {
+        UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.FirstSelected() );
+        if( pEntry && pEntry->mxNode.is() )
+            aRet <<= pEntry->mxNode;
+    }
+    else if( nSelectionCount > 1 )
+    {
+        Sequence< Reference< XTreeNode > > aSelection( nSelectionCount );
+        Reference< XTreeNode >* pNodes = aSelection.getArray();
+        UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.FirstSelected() );
+        while( pEntry && nSelectionCount )
+        {
+            *pNodes++ = pEntry->mxNode;
+            pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.NextSelected( pEntry ) );
+            --nSelectionCount;
+        }
+
+        OSL_ASSERT( (pEntry == nullptr) && (nSelectionCount == 0) );
+        aRet <<= aSelection;
+    }
+
+    return aRet;
+}
+
+
+void SAL_CALL TreeControlPeer::addSelectionChangeListener( const Reference< XSelectionChangeListener >& xListener )
+{
+    maSelectionListeners.addInterface( xListener );
+}
+
+
+void SAL_CALL TreeControlPeer::removeSelectionChangeListener( const Reference< XSelectionChangeListener >& xListener )
+{
+    maSelectionListeners.addInterface( xListener );
+}
+
+
+// css::view::XMultiSelectionSupplier
+
+
+sal_Bool SAL_CALL TreeControlPeer::addSelection( const Any& rSelection )
+{
+    ChangeNodesSelection( rSelection, true, false );
+    return true;
+}
+
+
+void SAL_CALL TreeControlPeer::removeSelection( const Any& rSelection )
+{
+    ChangeNodesSelection( rSelection, false, false );
+}
+
+
+void SAL_CALL TreeControlPeer::clearSelection()
+{
+    SolarMutexGuard aGuard;
+    getTreeListBoxOrThrow().SelectAll( false );
+}
+
+
+sal_Int32 SAL_CALL TreeControlPeer::getSelectionCount()
+{
+    SolarMutexGuard aGuard;
+    return getTreeListBoxOrThrow().GetSelectionCount();
+}
+
+namespace {
+
+class TreeSelectionEnumeration : public ::cppu::WeakImplHelper< XEnumeration >
+{
+public:
+    explicit TreeSelectionEnumeration( std::list< Any >& rSelection );
+    virtual sal_Bool SAL_CALL hasMoreElements() override;
+    virtual Any SAL_CALL nextElement() override;
+
+    std::list< Any > maSelection;
+    std::list< Any >::iterator maIter;
+};
+
+}
+
+TreeSelectionEnumeration::TreeSelectionEnumeration( std::list< Any >& rSelection )
+{
+    maSelection.swap( rSelection );
+    maIter = maSelection.begin();
+}
+
+
+sal_Bool SAL_CALL TreeSelectionEnumeration::hasMoreElements()
+{
+    return maIter != maSelection.end();
+}
+
+
+Any SAL_CALL TreeSelectionEnumeration::nextElement()
+{
+    if( maIter == maSelection.end() )
+        throw NoSuchElementException();
+
+    return (*maIter++);
+}
+
+
+Reference< XEnumeration > SAL_CALL TreeControlPeer::createSelectionEnumeration()
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    sal_uInt32 nSelectionCount = rTree.GetSelectionCount();
+    std::list< Any > aSelection( nSelectionCount );
+
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.FirstSelected() );
+    while( pEntry && nSelectionCount )
+    {
+        aSelection.emplace_back( pEntry->mxNode );
+        pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.NextSelected( pEntry ) );
+        --nSelectionCount;
+    }
+
+    OSL_ASSERT( (pEntry == nullptr) && (nSelectionCount == 0) );
+
+    return Reference< XEnumeration >( new TreeSelectionEnumeration( aSelection ) );
+}
+
+
+Reference< XEnumeration > SAL_CALL TreeControlPeer::createReverseSelectionEnumeration()
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    sal_uInt32 nSelectionCount = rTree.GetSelectionCount();
+    std::list< Any > aSelection;
+
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.FirstSelected() );
+    while( pEntry && nSelectionCount )
+    {
+        aSelection.push_front( Any( pEntry->mxNode ) );
+        pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.NextSelected( pEntry ) );
+        --nSelectionCount;
+    }
+
+    OSL_ASSERT( (pEntry == nullptr) && (nSelectionCount == 0) );
+
+    return Reference< XEnumeration >( new TreeSelectionEnumeration( aSelection ) );
+}
+
+
+// css::awt::XTreeControl
+
+
+OUString SAL_CALL TreeControlPeer::getDefaultExpandedGraphicURL()
+{
+    SolarMutexGuard aGuard;
+    return msDefaultExpandedGraphicURL;
+}
+
+
+void SAL_CALL TreeControlPeer::setDefaultExpandedGraphicURL( const OUString& sDefaultExpandedGraphicURL )
+{
+    SolarMutexGuard aGuard;
+    if( msDefaultExpandedGraphicURL == sDefaultExpandedGraphicURL )
+        return;
+
+    if( !sDefaultExpandedGraphicURL.isEmpty() )
+        loadImage( sDefaultExpandedGraphicURL, maDefaultExpandedImage );
+    else
+        maDefaultExpandedImage = Image();
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    SvTreeListEntry* pEntry = rTree.First();
+    while( pEntry )
+    {
+        ImplContextGraphicItem* pContextGraphicItem = dynamic_cast< ImplContextGraphicItem* >( &pEntry->GetItem( 0 ) );
+        if( pContextGraphicItem )
+        {
+            if( pContextGraphicItem->msExpandedGraphicURL.isEmpty() )
+                rTree.SetExpandedEntryBmp( pEntry, maDefaultExpandedImage );
+        }
+        pEntry = rTree.Next( pEntry );
+    }
+
+    msDefaultExpandedGraphicURL = sDefaultExpandedGraphicURL;
+}
+
+
+OUString SAL_CALL TreeControlPeer::getDefaultCollapsedGraphicURL()
+{
+    SolarMutexGuard aGuard;
+    return msDefaultCollapsedGraphicURL;
+}
+
+
+void SAL_CALL TreeControlPeer::setDefaultCollapsedGraphicURL( const OUString& sDefaultCollapsedGraphicURL )
+{
+    SolarMutexGuard aGuard;
+    if( msDefaultCollapsedGraphicURL == sDefaultCollapsedGraphicURL )
+        return;
+
+    if( !sDefaultCollapsedGraphicURL.isEmpty() )
+        loadImage( sDefaultCollapsedGraphicURL, maDefaultCollapsedImage );
+    else
+        maDefaultCollapsedImage = Image();
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    SvTreeListEntry* pEntry = rTree.First();
+    while( pEntry )
+    {
+        ImplContextGraphicItem* pContextGraphicItem = dynamic_cast< ImplContextGraphicItem* >( &pEntry->GetItem( 0 ) );
+        if( pContextGraphicItem )
+        {
+            if( pContextGraphicItem->msCollapsedGraphicURL.isEmpty() )
+                rTree.SetCollapsedEntryBmp( pEntry, maDefaultCollapsedImage );
+        }
+        pEntry = rTree.Next( pEntry );
+    }
+
+    msDefaultCollapsedGraphicURL = sDefaultCollapsedGraphicURL;
+}
+
+
+sal_Bool SAL_CALL TreeControlPeer::isNodeExpanded( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    return pEntry && rTree.IsExpanded( pEntry );
+}
+
+
+sal_Bool SAL_CALL TreeControlPeer::isNodeCollapsed( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+    return !isNodeExpanded( xNode );
+}
+
+
+void SAL_CALL TreeControlPeer::makeNodeVisible( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    if( pEntry )
+        rTree.MakeVisible( pEntry );
+}
+
+
+sal_Bool SAL_CALL TreeControlPeer::isNodeVisible( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    return pEntry && rTree.IsEntryVisible( pEntry );
+}
+
+
+void SAL_CALL TreeControlPeer::expandNode( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    if( pEntry )
+        rTree.Expand( pEntry );
+}
+
+
+void SAL_CALL TreeControlPeer::collapseNode( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    if( pEntry )
+        rTree.Collapse( pEntry );
+}
+
+
+void SAL_CALL TreeControlPeer::addTreeExpansionListener( const Reference< XTreeExpansionListener >& xListener )
+{
+    maTreeExpansionListeners.addInterface( xListener );
+}
+
+
+void SAL_CALL TreeControlPeer::removeTreeExpansionListener( const Reference< XTreeExpansionListener >& xListener )
+{
+    maTreeExpansionListeners.removeInterface( xListener );
+}
+
+
+Reference< XTreeNode > SAL_CALL TreeControlPeer::getNodeForLocation( sal_Int32 x, sal_Int32 y )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    Reference< XTreeNode > xNode;
+
+    const Point aPos( x, y );
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.GetEntry( aPos, true ) );
+    if( pEntry )
+        xNode = pEntry->mxNode;
+
+    return xNode;
+}
+
+
+Reference< XTreeNode > SAL_CALL TreeControlPeer::getClosestNodeForLocation( sal_Int32 x, sal_Int32 y )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    Reference< XTreeNode > xNode;
+
+    const Point aPos( x, y );
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( rTree.GetEntry( aPos, true ) );
+    if( pEntry )
+        xNode = pEntry->mxNode;
+
+    return xNode;
+}
+
+
+awt::Rectangle SAL_CALL TreeControlPeer::getNodeRect( const Reference< XTreeNode >& i_Node )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( i_Node );
+
+    ::tools::Rectangle aEntryRect( rTree.GetFocusRect( pEntry, rTree.GetEntryPosition( pEntry ).Y() ) );
+    return VCLUnoHelper::ConvertToAWTRect( aEntryRect );
+}
+
+
+sal_Bool SAL_CALL TreeControlPeer::isEditing(  )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    return rTree.IsEditingActive();
+}
+
+
+sal_Bool SAL_CALL TreeControlPeer::stopEditing()
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    if( rTree.IsEditingActive() )
+    {
+        rTree.EndEditing();
+        return true;
+    }
+    else
+    {
+        return false;
+    }
+}
+
+
+void SAL_CALL TreeControlPeer::cancelEditing(  )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    rTree.EndEditing();
+}
+
+
+void SAL_CALL TreeControlPeer::startEditingAtNode( const Reference< XTreeNode >& xNode )
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    UnoTreeListEntry* pEntry = getEntry( xNode );
+    rTree.EditEntry( pEntry );
+}
+
+void SAL_CALL TreeControlPeer::addTreeEditListener( const Reference< XTreeEditListener >& xListener )
+{
+    maTreeEditListeners.addInterface( xListener );
+}
+
+void SAL_CALL TreeControlPeer::removeTreeEditListener( const Reference< XTreeEditListener >& xListener )
+{
+    maTreeEditListeners.removeInterface( xListener );
+}
+
+bool TreeControlPeer::onEditingEntry( UnoTreeListEntry const * pEntry )
+{
+    if( mpTreeImpl && pEntry && pEntry->mxNode.is() && (maTreeEditListeners.getLength() > 0)  )
+    {
+        try
+        {
+            maTreeEditListeners.nodeEditing( pEntry->mxNode );
+        }
+        catch( VetoException& )
+        {
+            return false;
+        }
+        catch( Exception& )
+        {
+        }
+    }
+    return true;
+}
+
+bool TreeControlPeer::onEditedEntry( UnoTreeListEntry const * pEntry, const OUString& rNewText )
+{
+    if( mpTreeImpl && pEntry && pEntry->mxNode.is() ) try
+    {
+        LockGuard aLockGuard( mnEditLock );
+        if( maTreeEditListeners.getLength() > 0 )
+        {
+            maTreeEditListeners.nodeEdited( pEntry->mxNode, rNewText );
+            return false;
+        }
+        else
+        {
+            Reference< XMutableTreeNode > xMutableNode( pEntry->mxNode, UNO_QUERY );
+            if( xMutableNode.is() )
+                xMutableNode->setDisplayValue( Any( rNewText ) );
+            else
+                return false;
+        }
+
+    }
+    catch( Exception& )
+    {
+    }
+
+    return true;
+}
+
+
+// css::awt::tree::TreeDataModelListener
+
+
+void SAL_CALL TreeControlPeer::treeNodesChanged( const css::awt::tree::TreeDataModelEvent& rEvent )
+{
+    SolarMutexGuard aGuard;
+
+    if( mnEditLock != 0 )
+        return;
+
+    updateTree( rEvent );
+}
+
+void SAL_CALL TreeControlPeer::treeNodesInserted( const css::awt::tree::TreeDataModelEvent& rEvent )
+{
+    SolarMutexGuard aGuard;
+
+    if( mnEditLock != 0 )
+        return;
+
+    updateTree( rEvent );
+}
+
+void SAL_CALL TreeControlPeer::treeNodesRemoved( const css::awt::tree::TreeDataModelEvent& rEvent )
+{
+    SolarMutexGuard aGuard;
+
+    if( mnEditLock != 0 )
+        return;
+
+    updateTree( rEvent );
+}
+
+void SAL_CALL TreeControlPeer::treeStructureChanged( const css::awt::tree::TreeDataModelEvent& rEvent )
+{
+    SolarMutexGuard aGuard;
+
+    if( mnEditLock != 0 )
+        return;
+
+    updateTree( rEvent );
+}
+
+void TreeControlPeer::updateTree( const css::awt::tree::TreeDataModelEvent& rEvent )
+{
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    Sequence< Reference< XTreeNode > > Nodes;
+    Reference< XTreeNode > xNode( rEvent.ParentNode );
+    if( !xNode.is() && Nodes.hasElements() )
+    {
+        xNode = Nodes[0];
+    }
+
+    if( xNode.is() )
+        updateNode( rTree, xNode );
+}
+
+void TreeControlPeer::updateNode( UnoTreeListBoxImpl const & rTree, const Reference< XTreeNode >& xNode )
+{
+    if( !xNode.is() )
+        return;
+
+    UnoTreeListEntry* pNodeEntry = getEntry( xNode, false );
+
+    if( !pNodeEntry )
+    {
+        Reference< XTreeNode > xParentNode( xNode->getParent() );
+        UnoTreeListEntry* pParentEntry = nullptr;
+        sal_uLong nChild = TREELIST_APPEND;
+
+        if( xParentNode.is() )
+        {
+            pParentEntry = getEntry( xParentNode  );
+            nChild = xParentNode->getIndex( xNode );
+        }
+
+        pNodeEntry = createEntry( xNode, pParentEntry, nChild );
+    }
+
+    updateChildNodes( rTree, xNode, pNodeEntry );
+}
+
+void TreeControlPeer::updateChildNodes( UnoTreeListBoxImpl const & rTree, const Reference< XTreeNode >& xParentNode, UnoTreeListEntry* pParentEntry )
+{
+    if( !(xParentNode.is() && pParentEntry) )
+        return;
+
+    UnoTreeListEntry* pCurrentChild = dynamic_cast< UnoTreeListEntry* >( rTree.FirstChild( pParentEntry ) );
+
+    const sal_Int32 nChildCount = xParentNode->getChildCount();
+    for( sal_Int32 nChild = 0; nChild < nChildCount; nChild++ )
+    {
+        Reference< XTreeNode > xNode( xParentNode->getChildAt( nChild ) );
+        if( !pCurrentChild || ( pCurrentChild->mxNode != xNode ) )
+        {
+            UnoTreeListEntry* pNodeEntry = getEntry( xNode, false );
+            if( pNodeEntry == nullptr )
+            {
+                // child node is not yet part of the tree, add it
+                pCurrentChild = createEntry( xNode, pParentEntry, nChild );
+            }
+            else if( pNodeEntry != pCurrentChild )
+            {
+                // node is already part of the tree, but not on the correct position
+                rTree.GetModel()->Move( pNodeEntry, pParentEntry, nChild );
+                pCurrentChild = pNodeEntry;
+                updateEntry( pCurrentChild );
+            }
+        }
+        else
+        {
+            // child node has entry and entry is equal to current entry,
+            // so no structural changes happened
+            updateEntry( pCurrentChild );
+        }
+
+        pCurrentChild = dynamic_cast< UnoTreeListEntry* >( pCurrentChild->NextSibling() );
+    }
+
+    // check if we have entries without nodes left, we need to remove them
+    while( pCurrentChild )
+    {
+        UnoTreeListEntry* pNextChild = dynamic_cast< UnoTreeListEntry* >( pCurrentChild->NextSibling() );
+        rTree.GetModel()->Remove( pCurrentChild );
+        pCurrentChild = pNextChild;
+    }
+}
+
+OUString TreeControlPeer::getEntryString( const Any& rValue )
+{
+    OUString sValue;
+    if( rValue.hasValue() )
+    {
+        switch( rValue.getValueTypeClass() )
+        {
+        case TypeClass_SHORT:
+        case TypeClass_LONG:
+            {
+                sal_Int32 nValue = 0;
+                if( rValue >>= nValue )
+                    sValue = OUString::number( nValue );
+                break;
+            }
+        case TypeClass_BYTE:
+        case TypeClass_UNSIGNED_SHORT:
+        case TypeClass_UNSIGNED_LONG:
+            {
+                sal_uInt32 nValue = 0;
+                if( rValue >>= nValue )
+                    sValue = OUString::number( nValue );
+                break;
+            }
+        case TypeClass_HYPER:
+            {
+                sal_Int64 nValue = 0;
+                if( rValue >>= nValue )
+                    sValue = OUString::number( nValue );
+                break;
+            }
+        case TypeClass_UNSIGNED_HYPER:
+            {
+                sal_uInt64 nValue = 0;
+                if( rValue >>= nValue )
+                    sValue = OUString::number( nValue );
+                break;
+            }
+        case TypeClass_FLOAT:
+        case TypeClass_DOUBLE:
+            {
+                double fValue = 0.0;
+                if( rValue >>= fValue )
+                    sValue = OUString::number( fValue );
+                break;
+            }
+        case TypeClass_STRING:
+            rValue >>= sValue;
+            break;
+    /*
+        case TypeClass_INTERFACE:
+            // @todo
+            break;
+        case TypeClass_SEQUENCE:
+            {
+                Sequence< Any > aValues;
+                if( aValue >>= aValues )
+                {
+                    updateEntry( SvTreeListEntry& rEntry, aValues );
+                    return;
+                }
+            }
+            break;
+    */
+        default:
+            break;
+        }
+    }
+    return sValue;
+}
+
+// XEventListener
+void SAL_CALL TreeControlPeer::disposing( const css::lang::EventObject& )
+{
+    // model is disposed, so we clear our tree
+    SolarMutexGuard aGuard;
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+    rTree.Clear();
+    mxDataModel.clear();
+}
+
+void TreeControlPeer::onChangeDataModel( UnoTreeListBoxImpl& rTree, const Reference< XTreeDataModel >& xDataModel )
+{
+    if( xDataModel.is() && (mxDataModel == xDataModel) )
+        return; // do nothing
+
+    Reference< XTreeDataModelListener > xListener( this );
+
+    if( mxDataModel.is() )
+        mxDataModel->removeTreeDataModelListener( xListener );
+
+    mxDataModel = xDataModel;
+
+    fillTree( rTree, mxDataModel );
+
+    if( mxDataModel.is() )
+        mxDataModel->addTreeDataModelListener( xListener );
+}
+
+
+// css::awt::XLayoutConstrains
+
+
+css::awt::Size TreeControlPeer::getMinimumSize()
+{
+    SolarMutexGuard aGuard;
+
+    css::awt::Size aSz;
+/* todo
+    MultiLineEdit* pEdit = (MultiLineEdit*) GetWindow();
+    if ( pEdit )
+        aSz = AWTSize(pEdit->CalcMinimumSize());
+*/
+    return aSz;
+}
+
+css::awt::Size TreeControlPeer::getPreferredSize()
+{
+    return getMinimumSize();
+}
+
+css::awt::Size TreeControlPeer::calcAdjustedSize( const css::awt::Size& rNewSize )
+{
+    SolarMutexGuard aGuard;
+
+    css::awt::Size aSz = rNewSize;
+/* todo
+    MultiLineEdit* pEdit = (MultiLineEdit*) GetWindow();
+    if ( pEdit )
+        aSz = AWTSize(pEdit->CalcAdjustedSize( VCLSize(rNewSize )));
+*/
+    return aSz;
+}
+
+
+// css::awt::XVclWindowPeer
+
+
+void TreeControlPeer::setProperty( const OUString& PropertyName, const Any& aValue)
+{
+    SolarMutexGuard aGuard;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    switch( GetPropertyId( PropertyName ) )
+    {
+        case BASEPROPERTY_HIDEINACTIVESELECTION:
+        {
+            bool bEnabled = false;
+            if ( aValue >>= bEnabled )
+            {
+                WinBits nStyle = rTree.GetStyle();
+                if ( bEnabled )
+                    nStyle |= WB_HIDESELECTION;
+                else
+                    nStyle &= ~WB_HIDESELECTION;
+                rTree.SetStyle( nStyle );
+            }
+        }
+        break;
+
+        case BASEPROPERTY_TREE_SELECTIONTYPE:
+        {
+            SelectionType eSelectionType;
+            if( aValue >>= eSelectionType )
+            {
+                SelectionMode eSelMode;
+                switch( eSelectionType )
+                {
+                case SelectionType_SINGLE:  eSelMode = SelectionMode::Single; break;
+                case SelectionType_RANGE:   eSelMode = SelectionMode::Range; break;
+                case SelectionType_MULTI:   eSelMode = SelectionMode::Multiple; break;
+    //          case SelectionType_NONE:
+                default:                    eSelMode = SelectionMode::NONE; break;
+                }
+                if( rTree.GetSelectionMode() != eSelMode )
+                    rTree.SetSelectionMode( eSelMode );
+            }
+            break;
+        }
+
+        case BASEPROPERTY_TREE_DATAMODEL:
+            onChangeDataModel( rTree, Reference< XTreeDataModel >( aValue, UNO_QUERY ) );
+            break;
+        case BASEPROPERTY_ROW_HEIGHT:
+        {
+            sal_Int32 nHeight = 0;
+            if( aValue >>= nHeight )
+                rTree.SetEntryHeight( static_cast<short>(nHeight) );
+            break;
+        }
+        case BASEPROPERTY_TREE_EDITABLE:
+        {
+            bool bEnabled = false;
+            if( aValue >>= bEnabled )
+                rTree.EnableInplaceEditing( bEnabled );
+            break;
+        }
+        case BASEPROPERTY_TREE_INVOKESSTOPNODEEDITING:
+            break; // @todo
+        case BASEPROPERTY_TREE_ROOTDISPLAYED:
+        {
+            bool bDisplayed = false;
+            if( (aValue >>= bDisplayed) && ( bDisplayed != mbIsRootDisplayed) )
+            {
+                onChangeRootDisplayed(bDisplayed);
+            }
+            break;
+        }
+        case BASEPROPERTY_TREE_SHOWSHANDLES:
+        {
+            bool bEnabled = false;
+            if( aValue >>= bEnabled )
+            {
+                WinBits nBits = rTree.GetStyle() & (~WB_HASLINES);
+                if( bEnabled )
+                    nBits |= WB_HASLINES;
+                if( nBits != rTree.GetStyle() )
+                    rTree.SetStyle( nBits );
+            }
+            break;
+        }
+        case BASEPROPERTY_TREE_SHOWSROOTHANDLES:
+        {
+            bool bEnabled = false;
+            if( aValue >>= bEnabled )
+            {
+                WinBits nBits = rTree.GetStyle() & (~WB_HASLINESATROOT);
+                if( bEnabled )
+                    nBits |= WB_HASLINESATROOT;
+                if( nBits != rTree.GetStyle() )
+                    rTree.SetStyle( nBits );
+            }
+            break;
+        }
+        default:
+        VCLXWindow::setProperty( PropertyName, aValue );
+        break;
+    }
+}
+
+Any TreeControlPeer::getProperty( const OUString& PropertyName )
+{
+    SolarMutexGuard aGuard;
+
+    const sal_uInt16 nPropId = GetPropertyId( PropertyName );
+    if( (nPropId >= BASEPROPERTY_TREE_START) && (nPropId <= BASEPROPERTY_TREE_END) )
+    {
+        UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+        switch(nPropId)
+        {
+        case BASEPROPERTY_TREE_SELECTIONTYPE:
+        {
+            SelectionType eSelectionType;
+
+            SelectionMode eSelMode = rTree.GetSelectionMode();
+            switch( eSelMode )
+            {
+            case SelectionMode::Single:  eSelectionType = SelectionType_SINGLE; break;
+            case SelectionMode::Range:   eSelectionType = SelectionType_RANGE; break;
+            case SelectionMode::Multiple:eSelectionType = SelectionType_MULTI; break;
+//          case SelectionMode::NONE:
+            default:                eSelectionType = SelectionType_NONE; break;
+            }
+            return Any( eSelectionType );
+        }
+        case BASEPROPERTY_ROW_HEIGHT:
+            return Any( static_cast<sal_Int32>(rTree.GetEntryHeight()) );
+        case BASEPROPERTY_TREE_DATAMODEL:
+            return Any( mxDataModel );
+        case BASEPROPERTY_TREE_EDITABLE:
+            return Any( rTree.IsInplaceEditingEnabled() );
+        case BASEPROPERTY_TREE_INVOKESSTOPNODEEDITING:
+            return Any( true ); // @todo
+        case BASEPROPERTY_TREE_ROOTDISPLAYED:
+            return Any( mbIsRootDisplayed );
+        case BASEPROPERTY_TREE_SHOWSHANDLES:
+            return Any( (rTree.GetStyle() & WB_HASLINES) != 0 );
+        case BASEPROPERTY_TREE_SHOWSROOTHANDLES:
+            return Any( (rTree.GetStyle() & WB_HASLINESATROOT) != 0 );
+        }
+    }
+    return VCLXWindow::getProperty( PropertyName );
+}
+
+void TreeControlPeer::onChangeRootDisplayed( bool bIsRootDisplayed )
+{
+    if( mbIsRootDisplayed == bIsRootDisplayed )
+        return;
+
+    mbIsRootDisplayed = bIsRootDisplayed;
+
+    UnoTreeListBoxImpl& rTree = getTreeListBoxOrThrow();
+
+    if( rTree.GetEntryCount() == 0 )
+        return;
+
+    // todo
+    fillTree( rTree, mxDataModel );
+}
+
+bool TreeControlPeer::loadImage( const OUString& rURL, Image& rImage )
+{
+    if( !mxGraphicProvider.is() )
+    {
+        mxGraphicProvider = graphic::GraphicProvider::create(
+            comphelper::getProcessComponentContext());
+    }
+
+    try
+    {
+        css::beans::PropertyValues aProps( 1 );
+        aProps[0].Name = "URL";
+        aProps[0].Value <<= rURL;
+
+        Reference< XGraphic > xGraphic( mxGraphicProvider->queryGraphic( aProps ) );
+
+        Graphic aGraphic( xGraphic );
+        rImage = Image(aGraphic.GetBitmapEx());
+        return true;
+    }
+    catch( Exception& )
+    {
+    }
+
+    return false;
+}
+
+
+
+
+UnoTreeListBoxImpl::UnoTreeListBoxImpl( TreeControlPeer* pPeer, vcl::Window* pParent, WinBits nWinStyle )
+: SvTreeListBox( pParent, nWinStyle )
+, mxPeer( pPeer )
+{
+    SetStyle( WB_BORDER | WB_HASLINES |WB_HASBUTTONS | WB_HASLINESATROOT | WB_HASBUTTONSATROOT | WB_HSCROLL );
+    SetNodeDefaultImages();
+    SetSelectHdl( LINK(this, UnoTreeListBoxImpl, OnSelectionChangeHdl) );
+    SetDeselectHdl( LINK(this, UnoTreeListBoxImpl, OnSelectionChangeHdl) );
+
+    SetExpandingHdl( LINK(this, UnoTreeListBoxImpl, OnExpandingHdl) );
+    SetExpandedHdl( LINK(this, UnoTreeListBoxImpl, OnExpandedHdl) );
+
+}
+
+
+UnoTreeListBoxImpl::~UnoTreeListBoxImpl()
+{
+    disposeOnce();
+}
+
+void UnoTreeListBoxImpl::dispose()
+{
+    if( mxPeer.is() )
+        mxPeer->disposeControl();
+    mxPeer.clear();
+    SvTreeListBox::dispose();
+}
+
+
+IMPL_LINK_NOARG(UnoTreeListBoxImpl, OnSelectionChangeHdl, SvTreeListBox*, void)
+{
+    if( mxPeer.is() )
+        mxPeer->onSelectionChanged();
+}
+
+
+IMPL_LINK_NOARG(UnoTreeListBoxImpl, OnExpandingHdl, SvTreeListBox*, bool)
+{
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( GetHdlEntry() );
+
+    if( pEntry && mxPeer.is() )
+    {
+        return mxPeer->onExpanding( pEntry->mxNode, !IsExpanded( pEntry ) );
+    }
+    return false;
+}
+
+
+IMPL_LINK_NOARG(UnoTreeListBoxImpl, OnExpandedHdl, SvTreeListBox*, void)
+{
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( GetHdlEntry() );
+    if( pEntry && mxPeer.is() )
+    {
+        mxPeer->onExpanded( pEntry->mxNode, IsExpanded( pEntry ) );
+    }
+}
+
+
+void UnoTreeListBoxImpl::insert( SvTreeListEntry* pEntry,SvTreeListEntry* pParent,sal_uLong nPos )
+{
+    if( pParent )
+        SvTreeListBox::Insert( pEntry, pParent, nPos );
+    else
+        SvTreeListBox::Insert( pEntry, nPos );
+}
+
+
+void UnoTreeListBoxImpl::RequestingChildren( SvTreeListEntry* pParent )
+{
+    UnoTreeListEntry* pEntry = dynamic_cast< UnoTreeListEntry* >( pParent );
+    if( pEntry && pEntry->mxNode.is() && mxPeer.is() )
+        mxPeer->onRequestChildNodes( pEntry->mxNode );
+}
+
+
+bool UnoTreeListBoxImpl::EditingEntry( SvTreeListEntry* pEntry, Selection& )
+{
+    return mxPeer.is() && mxPeer->onEditingEntry( dynamic_cast< UnoTreeListEntry* >( pEntry ) );
+}
+
+
+bool UnoTreeListBoxImpl::EditedEntry( SvTreeListEntry* pEntry, const OUString& rNewText )
+{
+    return mxPeer.is() && mxPeer->onEditedEntry( dynamic_cast< UnoTreeListEntry* >( pEntry ), rNewText );
+}
+
+
+
+
+UnoTreeListItem::UnoTreeListItem()
+: SvLBoxString(OUString())
+{
+}
+
+void UnoTreeListItem::Paint(
+    const Point& rPos, SvTreeListBox& rDev, vcl::RenderContext& rRenderContext, const SvViewDataEntry* /*pView*/, const SvTreeListEntry& rEntry)
+{
+    Point aPos(rPos);
+    Size aSize(GetWidth(&rDev, &rEntry), GetHeight(&rDev, &rEntry));
+    if (!!maImage)
+    {
+        rRenderContext.DrawImage(aPos, maImage, rDev.IsEnabled() ? DrawImageFlags::NONE : DrawImageFlags::Disable);
+        int nWidth = maImage.GetSizePixel().Width() + 6;
+        aPos.AdjustX(nWidth );
+        aSize.AdjustWidth( -nWidth );
+    }
+    rRenderContext.DrawText(tools::Rectangle(aPos,aSize),maText, rDev.IsEnabled() ? DrawTextFlags::NONE : DrawTextFlags::Disable);
+}
+
+
+std::unique_ptr<SvLBoxItem> UnoTreeListItem::Clone(SvLBoxItem const * pSource) const
+{
+    std::unique_ptr<UnoTreeListItem> pNew(new UnoTreeListItem);
+    UnoTreeListItem const * pSourceItem = static_cast< UnoTreeListItem const * >( pSource );
+    pNew->maText = pSourceItem->maText;
+    pNew->maImage = pSourceItem->maImage;
+    return std::unique_ptr<SvLBoxItem>(pNew.release());
+}
+
+
+void UnoTreeListItem::SetImage( const Image& rImage )
+{
+    maImage = rImage;
+}
+
+
+void UnoTreeListItem::SetGraphicURL( const OUString& rGraphicURL )
+{
+    maGraphicURL = rGraphicURL;
+}
+
+
+void UnoTreeListItem::InitViewData( SvTreeListBox* pView,SvTreeListEntry* pEntry, SvViewDataItem* pViewData)
+{
+    if( !pViewData )
+        pViewData = pView->GetViewDataItem( pEntry, this );
+
+    Size aSize(maImage.GetSizePixel());
+    pViewData->mnWidth = aSize.Width();
+    pViewData->mnHeight = aSize.Height();
+
+    const Size aTextSize(pView->GetTextWidth( maText ), pView->GetTextHeight());
+    if( pViewData->mnWidth )
+    {
+        pViewData->mnWidth += (6 + aTextSize.Width());
+        if( pViewData->mnHeight < aTextSize.Height() )
+            pViewData->mnHeight = aTextSize.Height();
+    }
+    else
+    {
+        pViewData->mnWidth = aTextSize.Width();
+        pViewData->mnHeight = aTextSize.Height();
+    }
+}
+
+
+UnoTreeListEntry::UnoTreeListEntry( const Reference< XTreeNode >& xNode, TreeControlPeer* pPeer )
+: SvTreeListEntry()
+, mxNode( xNode )
+, mpPeer( pPeer )
+{
+    if( mpPeer )
+        mpPeer->addEntry( this );
+}
+
+
+UnoTreeListEntry::~UnoTreeListEntry()
+{
+    if( mpPeer )
+        mpPeer->removeEntry( this );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */