lstbox.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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 *   except in compliance with the License. You may obtain a copy of
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#pragma once

#if !defined(VCL_DLLIMPLEMENTATION) && !defined(TOOLKIT_DLLIMPLEMENTATION) && !defined(VCL_INTERNALS)
#error "don't use this in new code"
#endif

#include <config_options.h>
#include <sal/types.h>
#include <o3tl/typed_flags_set.hxx>
#include <vcl/dllapi.h>
#include <vcl/ctrl.hxx>

class DataChangedEvent;
class NotifyEvent;
class UserDrawEvent;

#define LISTBOX_APPEND              (SAL_MAX_INT32)
#define LISTBOX_ENTRY_NOTFOUND      (SAL_MAX_INT32)
#define LISTBOX_MAX_ENTRIES         (SAL_MAX_INT32 - 1)

// the following defines can be used for the SetEntryFlags()
// and GetEntryFlags() methods

// !! Do not use these flags for user data as they are reserved      !!
// !! to change the internal behaviour of the ListBox implementation !!
// !! for specific entries.                                          !!

enum class ListBoxEntryFlags
{
    NONE                    = 0x0000,
    DisableSelection        = 0x0001,

    MultiLine               = 0x0002,

    DrawDisabled            = 0x0004,
};
namespace o3tl
{
    template<> struct typed_flags<ListBoxEntryFlags> : is_typed_flags<ListBoxEntryFlags, 0x0007> {};
}

class Image;
class ImplListBox;
class ImplListBoxFloatingWindow;
class ImplBtn;
class ImplWin;
class ImplListBoxWindow;

class VCL_DLLPUBLIC ListBox : public Control
{
private:
    VclPtr<ImplListBox>                mpImplLB;
    VclPtr<ImplListBoxFloatingWindow>  mpFloatWin;
    VclPtr<ImplWin>                    mpImplWin;
    VclPtr<ImplBtn>                    mpBtn;
    sal_uInt16                  mnDDHeight;
    sal_Int32                   m_nMaxWidthChars;
    Link<ListBox&,void>          maSelectHdl;
    sal_uInt16                  mnLineCount;

    bool            mbDDAutoSize : 1;

private:
    SAL_DLLPRIVATE void    ImplInitListBoxData();

    DECL_DLLPRIVATE_LINK( ImplSelectHdl, LinkParamNone*, void );
    DECL_DLLPRIVATE_LINK( ImplScrollHdl, ImplListBox*, void );
    DECL_DLLPRIVATE_LINK( ImplCancelHdl, LinkParamNone*, void );
    DECL_DLLPRIVATE_LINK( ImplDoubleClickHdl, ImplListBoxWindow*, void );
    DECL_DLLPRIVATE_LINK( ImplPopupModeEndHdl, FloatingWindow*, void );
    DECL_DLLPRIVATE_LINK( ImplSelectionChangedHdl, sal_Int32, void );
    DECL_DLLPRIVATE_LINK( ImplFocusHdl, sal_Int32, void );
    DECL_DLLPRIVATE_LINK( ImplListItemSelectHdl, LinkParamNone*, void );

    DECL_DLLPRIVATE_LINK( ImplClickBtnHdl, void*, void );

protected:
    using Window::ImplInit;
    SAL_DLLPRIVATE void    ImplInit( vcl::Window* pParent, WinBits nStyle );
    SAL_DLLPRIVATE static WinBits ImplInitStyle( WinBits nStyle );
    bool               IsDropDownBox() const { return mpFloatWin != nullptr; }

protected:
    explicit            ListBox( WindowType nType );

    virtual void        FillLayoutData() const override;

public:
    explicit            ListBox( vcl::Window* pParent, WinBits nStyle = WB_BORDER );
    virtual             ~ListBox() override;
    virtual void        dispose() override;

    virtual void        ApplySettings(vcl::RenderContext& rRenderContext) override;
    virtual void        Draw( OutputDevice* pDev, const Point& rPos, SystemTextColorFlags nFlags ) override;
    virtual void        Resize() override;
    virtual bool        PreNotify( NotifyEvent& rNEvt ) override;
    virtual void        StateChanged( StateChangedType nType ) override;
    virtual void        DataChanged( const DataChangedEvent& rDCEvt ) override;

    void                Select();
    void                DoubleClick();
    virtual void        GetFocus() override;
    virtual void        LoseFocus() override;

    virtual const Wallpaper& GetDisplayBackground() const override;

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

    tools::Rectangle           GetDropDownPosSizePixel() const;

    void                AdaptDropDownLineCountToMaximum();
    void                SetDropDownLineCount( sal_uInt16 nLines );
    sal_uInt16          GetDropDownLineCount() const;

    void                EnableAutoSize( bool bAuto );
    bool                IsAutoSizeEnabled() const { return mbDDAutoSize; }

    sal_Int32           InsertEntry( const OUString& rStr, sal_Int32  nPos = LISTBOX_APPEND );
    sal_Int32           InsertEntry( const OUString& rStr, const Image& rImage, sal_Int32  nPos = LISTBOX_APPEND );
    void                RemoveEntry( sal_Int32  nPos );

    void                Clear();

    sal_Int32           GetEntryPos( std::u16string_view rStr ) const;
    Image               GetEntryImage( sal_Int32  nPos ) const;
    OUString            GetEntry( sal_Int32  nPos ) const;
    sal_Int32           GetEntryCount() const;

    void                SelectEntry( std::u16string_view rStr, bool bSelect = true );
    void                SelectEntryPos( sal_Int32  nPos, bool bSelect = true );
    void                SelectEntriesPos( const std::vector<sal_Int32>& rPositions, bool bSelect = true );

    sal_Int32           GetSelectedEntryCount() const;
    OUString            GetSelectedEntry( sal_Int32  nSelIndex = 0 ) const;
    sal_Int32           GetSelectedEntryPos( sal_Int32  nSelIndex = 0 ) const;

    bool                IsEntryPosSelected( sal_Int32  nPos ) const;
    void                SetNoSelection();

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

    void                SetEntryFlags( sal_Int32  nPos, ListBoxEntryFlags nFlags );

    void                SetTopEntry( sal_Int32  nPos );
    sal_Int32           GetTopEntry() const;

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

    void                AddSeparator( sal_Int32 n );

    bool                IsTravelSelect() const;
    bool                IsInDropDown() const;
    void                ToggleDropDown();

    void                EnableMultiSelection( bool bMulti );
    bool                IsMultiSelectionEnabled() const;

    void                SetReadOnly( bool bReadOnly = true );
    bool                IsReadOnly() const;

    tools::Rectangle           GetBoundingRectangle( sal_Int32  nItem ) const;

    void                SetSelectHdl( const Link<ListBox&,void>& rLink )     { maSelectHdl = rLink; }

    Size                CalcSubEditSize() const;    //size of area inside lstbox, i.e. no scrollbar/dropdown
    Size                CalcMinimumSize() const;    //size of lstbox area, i.e. including scrollbar/dropdown
    virtual Size        GetOptimalSize() const override;
    Size                CalcAdjustedSize( const Size& rPrefSize ) const;
    Size                CalcBlockSize( sal_uInt16 nColumns, sal_uInt16 nLines ) const;
    void                GetMaxVisColumnsAndLines( sal_uInt16& rnCols, sal_uInt16& rnLines ) const;

    sal_uInt16          GetDisplayLineCount() const;

    using Control::GetIndexForPoint;
    tools::Long GetIndexForPoint( const Point& rPoint, sal_Int32 & rPos ) const;

    void setMaxWidthChars(sal_Int32 nWidth);

    virtual bool set_property(const OString &rKey, const OUString &rValue) override;

    virtual FactoryFunction GetUITestFactory() const override;

    virtual void DumpAsPropertyTree(tools::JsonWriter&) override;
};

class UNLESS_MERGELIBS(VCL_DLLPUBLIC) MultiListBox final : public ListBox
{
public:
    explicit        MultiListBox( vcl::Window* pParent, WinBits nStyle );

};

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