listbox.hxx

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/* -*- 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 .
 */

#ifndef INCLUDED_VCL_INC_LISTBOX_HXX
#define INCLUDED_VCL_INC_LISTBOX_HXX

#include <vcl/button.hxx>
#include <vcl/floatwin.hxx>
#include <vcl/quickselectionengine.hxx>
#include <vcl/glyphitem.hxx>
#include <vcl/vcllayout.hxx>

#include <set>
#include <vector>
#include <memory>

class ScrollBar;
class ScrollBarBox;

#define HORZ_SCROLL         4
#define IMG_TXT_DISTANCE    6

enum LB_EVENT_TYPE
{
    LET_MBDOWN,
    LET_TRACKING,
    LET_KEYMOVE,
    LET_KEYSPACE
};

struct ImplEntryType
{
    OUString const    maStr;
    SalLayoutGlyphs   maStrGlyphs;
    Image const       maImage;
    void*       mpUserData;
    bool        mbIsSelected;
    ListBoxEntryFlags mnFlags;
    long        mnHeight;

    long getHeightWithMargin() const;

    ImplEntryType( const OUString& rStr, const Image& rImage ) :
        maStr( rStr ),
        maImage( rImage ),
        mnFlags( ListBoxEntryFlags::NONE ),
        mnHeight( 0 )
    {
        mbIsSelected = false;
        mpUserData = nullptr;
    }

    ImplEntryType( const OUString& rStr ) :
        maStr( rStr ),
        mnFlags( ListBoxEntryFlags::NONE ),
        mnHeight( 0 )
    {
        mbIsSelected = false;
        mpUserData = nullptr;
    }

    SalLayoutGlyphs* GetTextGlyphs(const OutputDevice* pOutputDevice);
};

class ImplEntryList
{
private:
    VclPtr<vcl::Window> mpWindow;   
    sal_Int32       mnLastSelected;
    sal_Int32       mnSelectionAnchor;
    sal_Int32       mnImages;

    sal_Int32       mnMRUCount;
    sal_Int32       mnMaxMRUCount;

    Link<sal_Int32,void> maSelectionChangedHdl;
    bool            mbCallSelectionChangedHdl;
    std::vector<std::unique_ptr<ImplEntryType> > maEntries;

    ImplEntryType*  GetEntry( sal_Int32  nPos ) const
    {
        if (nPos < 0 || static_cast<size_t>(nPos) >= maEntries.size())
            return nullptr;
        return maEntries[nPos].get();
    }

public:
                    ImplEntryList( vcl::Window* pWindow );
                    ~ImplEntryList();

    sal_Int32               InsertEntry( sal_Int32  nPos, ImplEntryType* pNewEntry, bool bSort );
    void                    RemoveEntry( sal_Int32  nPos );
    const ImplEntryType*    GetEntryPtr( sal_Int32  nPos ) const { return GetEntry( nPos ); }
    ImplEntryType*          GetMutableEntryPtr( sal_Int32  nPos ) const { return GetEntry( nPos ); }
    void                    Clear();

    sal_Int32           FindMatchingEntry( const OUString& rStr, sal_Int32  nStart, bool bLazy ) const;
    sal_Int32           FindEntry( const OUString& rStr, bool bSearchMRUArea = false ) const;

    long            GetAddedHeight( sal_Int32  nEndIndex, sal_Int32  nBeginIndex ) const;
    long            GetEntryHeight( sal_Int32  nPos ) const;

    sal_Int32       GetEntryCount() const { return static_cast<sal_Int32>(maEntries.size()); }
    bool            HasImages() const { return mnImages != 0; }

    OUString        GetEntryText( sal_Int32  nPos ) const;

    bool            HasEntryImage( sal_Int32  nPos ) const;
    Image           GetEntryImage( sal_Int32  nPos ) const;

    void            SetEntryData( sal_Int32  nPos, void* pNewData );
    void*           GetEntryData( sal_Int32  nPos ) const;

    void              SetEntryFlags( sal_Int32  nPos, ListBoxEntryFlags nFlags );
    ListBoxEntryFlags GetEntryFlags( sal_Int32  nPos ) const;

    void            SelectEntry( sal_Int32  nPos, bool bSelect );

    sal_Int32       GetSelectedEntryCount() const;
    OUString        GetSelectedEntry( sal_Int32  nIndex ) const;
    sal_Int32       GetSelectedEntryPos( sal_Int32  nIndex ) const;
    bool            IsEntryPosSelected( sal_Int32  nIndex ) const;

    void            SetLastSelected( sal_Int32  nPos )  { mnLastSelected = nPos; }
    sal_Int32       GetLastSelected() const { return mnLastSelected; }

    void            SetSelectionAnchor( sal_Int32  nPos )   { mnSelectionAnchor = nPos; }
    sal_Int32       GetSelectionAnchor() const { return mnSelectionAnchor; }

    void            SetSelectionChangedHdl( const Link<sal_Int32,void>& rLnk ) { maSelectionChangedHdl = rLnk; }
    void            SetCallSelectionChangedHdl( bool bCall )    { mbCallSelectionChangedHdl = bCall; }

    void            SetMRUCount( sal_Int32  n ) { mnMRUCount = n; }
    sal_Int32       GetMRUCount() const     { return mnMRUCount; }

    void            SetMaxMRUCount( sal_Int32  n )  { mnMaxMRUCount = n; }
    sal_Int32       GetMaxMRUCount() const      { return mnMaxMRUCount; }

    bool            IsEntrySelectable( sal_Int32  nPos ) const;

    sal_Int32       FindFirstSelectable( sal_Int32  nPos, bool bForward = true );
};

class ImplListBoxWindow : public Control, public vcl::ISearchableStringList
{
private:
    std::unique_ptr<ImplEntryList> mpEntryList;     
    tools::Rectangle       maFocusRect;

    Size            maUserItemSize;

    long            mnMaxTxtHeight;  
    long            mnMaxTxtWidth;   
    long            mnMaxImgTxtWidth;
    long            mnMaxImgWidth;   
    long            mnMaxImgHeight;  
    long            mnMaxWidth;      
    long            mnMaxHeight;     

    sal_Int32       mnCurrentPos;    
    sal_Int32       mnTrackingSaveSelection; 

    std::set< sal_Int32 > maSeparators; 

    sal_Int32       mnUserDrawEntry;

    sal_Int32       mnTop;           
    long            mnLeft;          
    long            mnTextHeight;    
    ProminentEntry  meProminentType; 

    sal_uInt16      mnSelectModifier;   

    bool mbHasFocusRect : 1;
    bool mbSort : 1;             
    bool mbTrack : 1;            
    bool mbMulti : 1;            
    bool mbStackMode : 1;        
    bool mbSimpleMode : 1;       
    bool mbTravelSelect : 1;     
    bool mbTrackingSelect : 1;   
    bool mbSelectionChanged : 1; 
    bool mbMouseMoveSelect : 1;  
    bool mbGrabFocus : 1;        
    bool mbUserDrawEnabled : 1;  
    bool mbInUserDraw : 1;       
    bool mbReadOnly : 1;         
    bool mbMirroring : 1;        
    bool mbCenter : 1;           
    bool mbRight : 1;            
    bool mbEdgeBlending : 1;
    bool mbIsComboboxDropdown : 1;

    Link<ImplListBoxWindow*,void>  maScrollHdl;
    Link<LinkParamNone*,void>      maSelectHdl;
    Link<LinkParamNone*,void>      maCancelHdl;
    Link<ImplListBoxWindow*,void>  maDoubleClickHdl;
    Link<UserDrawEvent*, void>     maUserDrawHdl;
    Link<LinkParamNone*,void>      maMRUChangedHdl;
    Link<sal_Int32,void>           maFocusHdl;
    Link<LinkParamNone*,void>      maListItemSelectHdl;

    vcl::QuickSelectionEngine maQuickSelectionEngine;

protected:
    virtual void    KeyInput( const KeyEvent& rKEvt ) override;
    virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;
    virtual void    MouseMove( const MouseEvent& rMEvt ) override;
    virtual void    Tracking( const TrackingEvent& rTEvt ) override;
    virtual void    Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override;
    virtual void    Resize() override;
    virtual void    GetFocus() override;
    virtual void    LoseFocus() override;

    bool            SelectEntries( sal_Int32  nSelect, LB_EVENT_TYPE eLET, bool bShift = false, bool bCtrl = false, bool bSelectPosChange = false );
    void            ImplPaint(vcl::RenderContext& rRenderContext, sal_Int32 nPos);
    void            ImplDoPaint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect);
    void            ImplCalcMetrics();
    void            ImplUpdateEntryMetrics( ImplEntryType& rEntry );
    void            ImplCallSelect();

    void            ImplShowFocusRect();
    void            ImplHideFocusRect();

    virtual void    StateChanged( StateChangedType nType ) override;
    virtual void    DataChanged( const DataChangedEvent& rDCEvt ) override;

public:
    virtual void  FillLayoutData() const override;

                    ImplListBoxWindow( vcl::Window* pParent, WinBits nWinStyle );
    virtual         ~ImplListBoxWindow() override;
    virtual void    dispose() override;

    ImplEntryList*  GetEntryList() const { return mpEntryList.get(); }

    sal_Int32       InsertEntry( sal_Int32  nPos, ImplEntryType* pNewEntry );
    void            RemoveEntry( sal_Int32  nPos );
    void            Clear();
    void            ResetCurrentPos()               { mnCurrentPos = LISTBOX_ENTRY_NOTFOUND; }
    sal_Int32       GetCurrentPos() const           { return mnCurrentPos; }
    sal_uInt16      GetDisplayLineCount() const;
    void            SetEntryFlags( sal_Int32  nPos, ListBoxEntryFlags nFlags );

    void            DrawEntry(vcl::RenderContext& rRenderContext, sal_Int32  nPos, bool bDrawImage, bool bDrawText, bool bDrawTextAtImagePos = false);

    void            SelectEntry( sal_Int32  nPos, bool bSelect );
    void            DeselectAll();
    sal_Int32       GetEntryPosForPoint( const Point& rPoint ) const;
    sal_Int32       GetLastVisibleEntry() const;

    bool            ProcessKeyInput( const KeyEvent& rKEvt );

    void            SetTopEntry( sal_Int32  nTop );
    sal_Int32       GetTopEntry() const             { return mnTop; }
    void            ShowProminentEntry( sal_Int32  nEntryPos );
    void            SetProminentEntryType( ProminentEntry eType ) { meProminentType = eType; }
    using Window::IsVisible;
    bool            IsVisible( sal_Int32  nEntry ) const;

    long            GetLeftIndent() const           { return mnLeft; }
    void            SetLeftIndent( long n );
    void            ScrollHorz( long nDiff );

    void            AllowGrabFocus( bool b )        { mbGrabFocus = b; }
    bool            IsGrabFocusAllowed() const      { return mbGrabFocus; }

    void            SetSeparatorPos( sal_Int32  n );
    sal_Int32       GetSeparatorPos() const;

    void            AddSeparator( sal_Int32 n )     { maSeparators.insert( n ); }
    bool            isSeparator( const sal_Int32 &n ) const;

    void            SetTravelSelect( bool bTravelSelect ) { mbTravelSelect = bTravelSelect; }
    bool            IsTravelSelect() const          { return mbTravelSelect; }
    bool            IsTrackingSelect() const        { return mbTrackingSelect; }

    void            SetUserItemSize( const Size& rSz );

    void            EnableUserDraw( bool bUserDraw ) { mbUserDrawEnabled = bUserDraw; }
    bool            IsUserDrawEnabled() const   { return mbUserDrawEnabled; }

    void            EnableMultiSelection( bool bMulti, bool bStackMode ) { mbMulti = bMulti; mbStackMode = bStackMode; }
    bool            IsMultiSelectionEnabled() const     { return mbMulti; }

    void            SetMultiSelectionSimpleMode( bool bSimple ) { mbSimpleMode = bSimple; }

    void            EnableMouseMoveSelect( bool bMouseMoveSelect ) { mbMouseMoveSelect = bMouseMoveSelect; }
    bool            IsMouseMoveSelect() const   { return mbMouseMoveSelect||mbStackMode; }

    Size            CalcSize(sal_Int32 nMaxLines) const;
    tools::Rectangle       GetBoundingRectangle( sal_Int32  nItem ) const;

    long            GetEntryHeight() const              { return mnMaxHeight; }
    long            GetEntryHeightWithMargin() const;
    long            GetMaxEntryWidth() const            { return mnMaxWidth; }

    void            SetScrollHdl( const Link<ImplListBoxWindow*,void>& rLink ) { maScrollHdl = rLink; }
    void            SetSelectHdl( const Link<LinkParamNone*,void>& rLink ) { maSelectHdl = rLink; }
    void            SetCancelHdl( const Link<LinkParamNone*,void>& rLink ) { maCancelHdl = rLink; }
    void            SetDoubleClickHdl( const Link<ImplListBoxWindow*,void>& rLink ) { maDoubleClickHdl = rLink; }
    void            SetUserDrawHdl( const Link<UserDrawEvent*, void>& rLink ) { maUserDrawHdl = rLink; }
    void            SetMRUChangedHdl( const Link<LinkParamNone*,void>& rLink ) { maMRUChangedHdl = rLink; }
    void            SetFocusHdl( const Link<sal_Int32,void>& rLink )  { maFocusHdl = rLink ; }

    void            SetListItemSelectHdl( const Link<LinkParamNone*,void>& rLink ) { maListItemSelectHdl = rLink ; }
    bool            IsSelectionChanged() const { return mbSelectionChanged; }
    sal_uInt16      GetSelectModifier() const { return mnSelectModifier; }

    void            EnableSort( bool b ) { mbSort = b; }

    void            SetReadOnly( bool bReadOnly )   { mbReadOnly = bReadOnly; }
    bool            IsReadOnly() const              { return mbReadOnly; }

    DrawTextFlags   ImplGetTextStyle() const;

    void     EnableMirroring()       { mbMirroring = true; }
    bool     IsMirroring() const { return mbMirroring; }

    bool GetEdgeBlending() const { return mbEdgeBlending; }
    void SetEdgeBlending(bool bNew) { mbEdgeBlending = bNew; }
    void EnableQuickSelection( bool b );

    using Control::ImplInitSettings;
    virtual void ApplySettings(vcl::RenderContext& rRenderContext) override;

protected:
    // ISearchableStringList
    virtual vcl::StringEntryIdentifier    CurrentEntry( OUString& _out_entryText ) const override;
    virtual vcl::StringEntryIdentifier    NextEntry( vcl::StringEntryIdentifier _currentEntry, OUString& _out_entryText ) const override;
    virtual void                            SelectEntry( vcl::StringEntryIdentifier _entry ) override;
};

class ImplListBox : public Control
{
private:
    VclPtr<ImplListBoxWindow> maLBWindow;
    VclPtr<ScrollBar>    mpHScrollBar;
    VclPtr<ScrollBar>    mpVScrollBar;
    VclPtr<ScrollBarBox> mpScrollBarBox;

    bool mbVScroll : 1;     // VScroll on or off
    bool mbHScroll : 1;     // HScroll on or off
    bool mbAutoHScroll : 1; // AutoHScroll on or off
    bool mbEdgeBlending : 1;

    Link<ImplListBox*,void>   maScrollHdl;    // because it is needed by ImplListBoxWindow itself

protected:
    virtual void        GetFocus() override;
    virtual void        StateChanged( StateChangedType nType ) override;

    virtual bool        EventNotify( NotifyEvent& rNEvt ) override;

    void                ImplResizeControls();
    void                ImplCheckScrollBars();
    void                ImplInitScrollBars();

    DECL_LINK(    ScrollBarHdl, ScrollBar*, void );
    DECL_LINK(    LBWindowScrolled, ImplListBoxWindow*, void );
    DECL_LINK(    MRUChanged, LinkParamNone*, void );

public:
                    ImplListBox( vcl::Window* pParent, WinBits nWinStyle );
                    virtual ~ImplListBox() override;
    virtual void    dispose() override;

    const ImplEntryList*    GetEntryList() const            { return maLBWindow->GetEntryList(); }
    ImplListBoxWindow*      GetMainWindow()                 { return maLBWindow.get(); }

    virtual void    Resize() override;
    virtual const Wallpaper& GetDisplayBackground() const override;

    sal_Int32       InsertEntry( sal_Int32  nPos, const OUString& rStr );
    sal_Int32       InsertEntry( sal_Int32  nPos, const OUString& rStr, const Image& rImage );
    void            RemoveEntry( sal_Int32  nPos );
    void            SetEntryData( sal_Int32  nPos, void* pNewData ) { maLBWindow->GetEntryList()->SetEntryData( nPos, pNewData ); }
    void            Clear();

    void            SetEntryFlags( sal_Int32  nPos, ListBoxEntryFlags nFlags );

    void            SelectEntry( sal_Int32  nPos, bool bSelect );
    void            SetNoSelection();
    void            ResetCurrentPos()               { maLBWindow->ResetCurrentPos(); }
    sal_Int32       GetCurrentPos() const           { return maLBWindow->GetCurrentPos(); }

    bool            ProcessKeyInput( const KeyEvent& rKEvt )    { return maLBWindow->ProcessKeyInput( rKEvt ); }
    bool            HandleWheelAsCursorTravel( const CommandEvent& rCEvt );

    void            SetSeparatorPos( sal_Int32  n )     { maLBWindow->SetSeparatorPos( n ); }
    sal_Int32       GetSeparatorPos() const         { return maLBWindow->GetSeparatorPos(); }

    void            AddSeparator( sal_Int32 n )     { maLBWindow->AddSeparator( n ); }

    void            SetTopEntry( sal_Int32  nTop )      { maLBWindow->SetTopEntry( nTop ); }
    sal_Int32       GetTopEntry() const             { return maLBWindow->GetTopEntry(); }
    void            ShowProminentEntry( sal_Int32  nPos ) { maLBWindow->ShowProminentEntry( nPos ); }
    using Window::IsVisible;
    bool            IsVisible( sal_Int32  nEntry ) const { return maLBWindow->IsVisible( nEntry ); }

    void            SetProminentEntryType( ProminentEntry eType ) { maLBWindow->SetProminentEntryType( eType ); }

    long            GetLeftIndent() const           { return maLBWindow->GetLeftIndent(); }
    void            SetLeftIndent( sal_uInt16 n )       { maLBWindow->SetLeftIndent( n ); }

    void            SetTravelSelect( bool bTravelSelect ) { maLBWindow->SetTravelSelect( bTravelSelect ); }
    bool            IsTravelSelect() const          { return maLBWindow->IsTravelSelect(); }
    bool            IsTrackingSelect() const            { return maLBWindow->IsTrackingSelect(); }

    void            EnableMultiSelection( bool bMulti, bool bStackMode ) { maLBWindow->EnableMultiSelection( bMulti, bStackMode ); }
    bool            IsMultiSelectionEnabled() const     { return maLBWindow->IsMultiSelectionEnabled(); }

    void            SetMultiSelectionSimpleMode( bool bSimple ) { maLBWindow->SetMultiSelectionSimpleMode( bSimple ); }

    void            SetReadOnly( bool b )           { maLBWindow->SetReadOnly( b ); }
    bool            IsReadOnly() const              { return maLBWindow->IsReadOnly(); }

    Size            CalcSize( sal_Int32  nMaxLines ) const              { return maLBWindow->CalcSize( nMaxLines ); }
    long            GetEntryHeight() const          { return maLBWindow->GetEntryHeight(); }
    long            GetEntryHeightWithMargin() const{ return maLBWindow->GetEntryHeightWithMargin(); }
    long            GetMaxEntryWidth() const        { return maLBWindow->GetMaxEntryWidth(); }

    void            SetScrollHdl( const Link<ImplListBox*,void>& rLink ) { maScrollHdl = rLink; }
    void            SetSelectHdl( const Link<LinkParamNone*,void>& rLink ) { maLBWindow->SetSelectHdl( rLink ); }
    void            SetCancelHdl( const Link<LinkParamNone*,void>& rLink ) { maLBWindow->SetCancelHdl( rLink ); }
    void            SetDoubleClickHdl( const Link<ImplListBoxWindow*,void>& rLink ) { maLBWindow->SetDoubleClickHdl( rLink ); }
    void            SetUserDrawHdl( const Link<UserDrawEvent*, void>& rLink ) { maLBWindow->SetUserDrawHdl( rLink ); }
    void            SetFocusHdl( const Link<sal_Int32,void>& rLink )  { maLBWindow->SetFocusHdl( rLink ); }
    void            SetListItemSelectHdl( const Link<LinkParamNone*,void>& rLink ) { maLBWindow->SetListItemSelectHdl( rLink ); }
    void            SetSelectionChangedHdl( const Link<sal_Int32,void>& rLnk ) { maLBWindow->GetEntryList()->SetSelectionChangedHdl( rLnk ); }
    void            SetCallSelectionChangedHdl( bool bCall )    { maLBWindow->GetEntryList()->SetCallSelectionChangedHdl( bCall ); }
    bool            IsSelectionChanged() const                  { return maLBWindow->IsSelectionChanged(); }
    sal_uInt16      GetSelectModifier() const                   { return maLBWindow->GetSelectModifier(); }

    void            SetMRUEntries( const OUString& rEntries, sal_Unicode cSep );
    OUString        GetMRUEntries( sal_Unicode cSep ) const;
    void            SetMaxMRUCount( sal_Int32  n )                  { maLBWindow->GetEntryList()->SetMaxMRUCount( n ); }
    sal_Int32       GetMaxMRUCount() const                      { return maLBWindow->GetEntryList()->GetMaxMRUCount(); }
    sal_uInt16      GetDisplayLineCount() const
    { return maLBWindow->GetDisplayLineCount(); }

    bool GetEdgeBlending() const { return mbEdgeBlending; }
    void SetEdgeBlending(bool bNew);

    void     EnableMirroring()   { maLBWindow->EnableMirroring(); }
};

class ImplListBoxFloatingWindow : public FloatingWindow
{
private:
    VclPtr<ImplListBox> mpImplLB;
    Size            maPrefSz;
    sal_uInt16      mnDDLineCount;
    sal_Int32       mnPopupModeStartSaveSelection;
    bool            mbAutoWidth;

protected:
    virtual bool    PreNotify( NotifyEvent& rNEvt ) override;

public:
                    ImplListBoxFloatingWindow( vcl::Window* pParent );
    virtual         ~ImplListBoxFloatingWindow() override;
    virtual void    dispose() override;
    void            SetImplListBox( ImplListBox* pLB )  { mpImplLB = pLB; }

    void            SetPrefSize( const Size& rSz )      { maPrefSz = rSz; }
    const Size&     GetPrefSize() const                 { return maPrefSz; }

    void            SetAutoWidth( bool b )              { mbAutoWidth = b; }

    Size            CalcFloatSize();
    void            StartFloat( bool bStartTracking );

    virtual void    setPosSizePixel( long nX, long nY,
                                     long nWidth, long nHeight, PosSizeFlags nFlags = PosSizeFlags::All ) override;

    void            SetDropDownLineCount( sal_uInt16 n ) { mnDDLineCount = n; }
    sal_uInt16      GetDropDownLineCount() const { return mnDDLineCount; }

    sal_Int32       GetPopupModeStartSaveSelection() const { return mnPopupModeStartSaveSelection; }

    virtual void    Resize() override;
};

class ImplWin : public Control
{
private:

    sal_Int32       mnItemPos;  
    OUString        maString;
    Image           maImage;

    tools::Rectangle       maFocusRect;

    Link<void*,void> maMBDownHdl;
    Link<UserDrawEvent*, void> maUserDrawHdl;

    bool            mbUserDrawEnabled : 1;
    bool            mbEdgeBlending : 1;

    void ImplDraw(vcl::RenderContext& rRenderContext, bool bLayout = false);
protected:
    virtual void  FillLayoutData() const override;

public:
                    ImplWin( vcl::Window* pParent, WinBits nWinStyle );

    virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;
    virtual void    Paint( vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect ) override;
    virtual void    Resize() override;
    virtual void    GetFocus() override;
    virtual void    LoseFocus() override;
    virtual bool    PreNotify( NotifyEvent& rNEvt ) override;

    sal_Int32       GetItemPos() const { return mnItemPos; }
    void            SetItemPos( sal_Int32  n ) { mnItemPos = n; }

    void            SetString( const OUString& rStr ) { maString = rStr; }

    void            SetImage( const Image& rImg ) { maImage = rImg; }

    void            SetMBDownHdl( const Link<void*,void>& rLink ) { maMBDownHdl = rLink; }
    void            SetUserDrawHdl( const Link<UserDrawEvent*, void>& rLink ) { maUserDrawHdl = rLink; }

    void            EnableUserDraw( bool bUserDraw )    { mbUserDrawEnabled = bUserDraw; }
    bool            IsUserDrawEnabled() const           { return mbUserDrawEnabled; }

    void DrawEntry(vcl::RenderContext& rRenderContext, bool bLayout);

    bool GetEdgeBlending() const { return mbEdgeBlending; }
    void SetEdgeBlending(bool bNew) { mbEdgeBlending = bNew; }

    virtual void    ShowFocus(const tools::Rectangle& rRect) override;

    using Control::ImplInitSettings;
    virtual void ApplySettings(vcl::RenderContext& rRenderContext) override;

};

class ImplBtn : public PushButton
{
private:
    Link<void*,void> maMBDownHdl;

public:
                    ImplBtn( vcl::Window* pParent, WinBits nWinStyle );

    virtual void    MouseButtonDown( const MouseEvent& rMEvt ) override;
    void            SetMBDownHdl( const Link<void*,void>& rLink ) { maMBDownHdl = rLink; }
};

void ImplInitDropDownButton( PushButton* pButton );

#endif // INCLUDED_VCL_INC_LISTBOX_HXX

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